| Patent claims 1. The method of manufacturing of high-pressure container, especially to store liquids and gases under higher pressure, characterized in that it includes manufacturing of the component with the application of any known technique of preforms making, made out of thermoplastic material in a form of the preform of the future container and its blow moulding to obtain the required size and reinforcement of its outer surface by means of winding fibres impregnated with resin, characterized in that after leaving the form and the furnace, the blow moulded preform is being matched with the joint connection pipe as well as with the upper and lower pads, matching in shape with a shape of the recess of the joint connection pipe and the bottom of the preform/container, and the inside of the formed container is filled in with gas. 2. The method according to the claim 1, characterized in that thermoplastic properties of the material, from which the preform is made, enable its repeatable plasticization and solidification. 3. The method according to the claim 2, characterized in that the preform is made of PET material. 4. The method according to the claim 1 or 2 or 3, characterized in that in the process of the preform manufacturing and its blow moulding, conditions in the entire volume of the material injected into the form are homogenous. 5. The method according to the claim 1 or 2 or 3 or 4, characterized in that on the lower surface of the joint connection pipe, the grooves are radiate around the hole of the joint connection pipe. 6. The method according to the claim 5, characterized in that at least one groove contains the ring type seal , and the second groove situated in the close vicinity to it, contains the sealing ring. 7. The method according to the claim 5 or 6, characterized in that the joint connection pipe is provided with the additional joggle in a form of a ring situated around the hole of the joint connection pipe. 8. The method according to the claim 1 or 4 or 5 or 6 or 7, characterized in that the joint connection pipe is made of the material selected from among ferrous metals, non-ferrous metals or composites. 9. The method according to the claims from 1 to 8, characterized in that the lower pad mating with the bottom of the preform/container on a side of its inside, is not concave towards the container inside. 10. The method according to the claims from 1 to 9, characterized in that the lower pad has a shape of a spacer situated on this side of the container, which is not provided with the joint connection pipe. 11. The method according to the claims from 1 to 10, characterized in that value of pressure inside the container is equal to not less than 2 bars. 12. The method according to the claims from 1 to 11, characterized in that for reinforcement of the outer surface, hardening resins containing fibres from the following group of fibres: glass or carbon or aramid or basalt or ceramide or several kinds of the above fibres at the same time are used. 13. The method according to the claim 12, characterized in that reinforcement is being performed at least once with the application of at least one from among the following methods: the cross method consisting in simultaneous rotation of the container or the winding head around the container and shift of the head alongside the length of the container reaching an angle of inclination falling within the range from 49° up to 59°, the polar method according to which fibre is wound when the winding head moves between the poles of the container and the above fibre passes every time around the joint connection pipe and/or the helical method consisting in reinforcement of the cylindrical part of the container. 14. The method according to the claim 12 or 13, characterized in that the individual packages of fibres are separated with a layer of resin from a group of polyester or epoxy resins. 15. The method according to the claim 14, characterized in that depending on the kind of the used resin, the container wrapped with fibre passes to the furnace with the purpose to harden the resin or to initiate chemical reaction resulting in hardening of laminate. 16. The method according to the claim 15, characterized in that the successive packages with fibres form simultaneously an element fixing the joint connection and the upper pad to the blow moulded preform. 17. The method according to the claims from 1 to 16, characterized in that after the resin has been hardened, the container is covered with the coating protecting it against action of UV radiation, water, chemical substances and making it impact strength. 18. The method according to the claim 17, characterized in that in the coating any additional technical information about the product, its exploitation and servicing can be inserted. 19. The high-pressure container composed of the body constructed from the blow moulded preform, characterized in that it contains the joint connection pipe, and that in the inside the blow moulded preform, on the side being opposite in relation to the joint connection pipe, the lower pad is situated whereas on the side of the joint connection pipe - the upper pad which mates with the joint connection pipe is situated. 20. The container according to the claim 19, characterized in that on the side of the container inside, the joint connection pipe is provided with at least one groove for the sealing ring with at least one sealing ring situated in its inside as well as at least one groove for the seal of "ring/ring" type. 21. The container according to the claim 19 or 20, characterized in that matched together: the blow moulded preform, the joint connection pipe, and lower and upper pads, are wrapped with the layers of laminate. 22. The container according to the claim 21, characterized in that the layer of laminate is additionally covered with a protective coating. 23. The container according to the claim 1 or 9 or 19 or 21, characterized in that the lower pad (10) is provided with the joggle (14) directed towards the container outside. 24. The container according to the claim 23, characterized in that the joggle (14) is visible after the coating of the container has been wound. 25. The container according to the claim 23, characterized in that the joggle (14) protrudes above the coating of the container. |
Pressure
The subject-matter of the invention is the method of manufacturing of a container characterized in a high resistance to damaging effects of pressure produced by the medium, accumulated in its inside and the container itsel, manufactured in accordance with method described in this invention, to be especially applied for storage of liquids and gases under high pressures.
Commonly known and applicable are methods of manufacturing of packages and containers made of plastic and used to store substances in all states of aggregation. However, it happens frequently that the substance contained in the container, due to its own physical and chemical properties and as a result of its interaction with the environment, first of all because of changeable thermal conditions, changes its state of aggregation, or as a result of such reactions - gases are liberated from the stored substance, which respectively increase pressure on the container walls. That is why in many cases we give up to continue production of containers to be used for storage of such substances with the application of form gluing method. Such a method consists in manufacturing of several elements of the final product, which are then glued or welded edgewise the contact edges of individual elements. This method enables placement of additional stiffeners in the inside of the product, which are especially required in case of squeezed (crushed) containers. In case of torn containers (by means of the medium in its inside), much more efficient are containers manufactured as a whole, in one element. In this case forces tangent to the walls of the container, while acting outwards - unseal the container in these points where elements of the form have been joined.
A relatively simple solution is placing the described container in another, more resistant, container. This may be accomplished in a way, described in the patent application No P-312662 i.e. by placing a plastic container in the inside of a steel basket, which braids the outside planes of the container. Nevertheless, it should be underlined that the application of metals considerably increases weight of the final product and, at the same time, reduces weight of the medium that can be contained in such container.
Such reinforcement can also be made by means of lamination, the method consisting in placement of an additional layer of fibres on a surface of the product, which are wrapped and joined with the product surface with resin. This method of increasing strength of construction has been presented as an example e.g. in the patent No PL 168196.
The method to reinforce construction of the container operating under high pressures, acting on its walls out of its inside is also known, and it has been disclosed in the Polish patent No 184943. In order to increase resistance of the container made of plastic by means of joining the elements of the container form, the container is wrapped with fibres (snarls), which are arranged on the container surface in a way resulting in increase of its resistance to stresses. Next, in the Polish patent No PL -197773, the method of manufacturing of a plastic container operating under high pressure, has been disclosed. This method consists in strengthening of the container construction by lamination of its walls. In the course of lamination, in the point of connection hole/holes, flanged inserts are placed which are provided with at least two gaskets. They ensure resistance of the container to changeable thermal and mechanical conditions during its exploitation.
The method according to the American patent application No US 20050167433 is also known, which consists in covering a perform manufactured by means of blow moulding, with the additional coating, being tightened around the internal container. It is also possible to perform lamination with separate fibres - threads padded and entangled on the surface of the container. As it has been disclosed in the document No US20050077643, bobbins packed with fibres turn around the moving container, forming a net with a pattern adjusted to the working conditions of the final product.
During the operation of reinforcing of the outside surfaces of plastic containers, joint connection pipes are also fixed. Taking into consideration pressure ranges within which such a connection should operate, joint connection pipes are made of metal resistant to further treatment, especially under high temperatures. Additionally, in the area of metal/plastic connection, the gaskets (PL- 197773) are placed, which on the successive stage of treatment and lamination are being pressed to individual layers of the product to ensure tightness of this connection. It is exceptionally important that a free edge of the joint connection pipe preserves its ideal form during lamination and heat treatment and is not submitted to any deformations that can result in deterioration of the final product tightness.
According to the patent application No EP 08102903, the method of manufacturing of the container is known, which consists in uniform manufacturing of the container and joint connection pipe (as one element). The perform received on the first stage of production is being placed in the cooled cavity and then - blow moulded to obtain working dimensions. After this operation, the container is finished by means of lamination.
In the case, when the maximum working pressure under which the container is to operate, may cause damaging of a thread of the joint connection pipe, or when the working environment of the container may cause its mechanical damages resulting e.g. from side impact of a valve or stresses in the installation carrying away the container content, it becomes necessary to make the joint connection pipe or its thread from any material which is more resistant than plastic. Respectively, it will be necessary to eliminate possible unsealing of the container in the point where material of the container and material of the joint connection pipe are connected. To this end, any additional seals - O-rings according to the referred state of the art or on the stage of the container production, the method in accordance with this invention shall be applied.
The method of manufacturing of high-pressure container in accordance with the invention enables production of the container resistant to effects of significant bursting forces acting in the container, the outer surface of which is reinforced by means of lamination and which, along with a sealing ring placed in the joint connection pipe, protects the containers against bursting in case of increase of internal pressure and against mechanical damages from outside.
The method according to the invention in the first stage includes manufacturing of a component being a preform of the future container, with the application of any known technique of preforms making. The received preform is then blow moulded to obtain the required size and shape. Such preform is made of thermoplastic material, preferably PET material. Preferably, thermoplastic properties of the material enable repeatable plasticization and solidification of the material. Preferably, when in the process of the preform manufacturing, conditions in the entire volume of the material injected into the form, are homogenous. The second component used to produce the container in accordance with the invention, is the joint connection pipe made of the material selected from among ferrous metals, non-ferrous metals or composites. Moreover, on the lower surface of the joint connection pipe, grooves radiate around the hole of the joint connection pipe, from which at least one is provided with O-ring type seal, whereas the second groove situated in the close vicinity to it - is provided with a sealing ring. The joint connection pipe is preferably provided with the additional joggle in a form of a ring situated around the joint connection pipe hole. Also preferably, that in the outer surface of the joint connection pipe (in relation to the container inside), there is at least one blind hole. During the container lamination, into such hole/holes the resin used in the production process is flowing in.
In the second stage, after leaving the form and the furnace, the blow moulded preform is being matched with the joint connection pipe as well as with the upper and lower pads, corresponding in shape with a shape of a recess in the joint connection and the preform/container bottom. Preferably, the lower pad mating with the bottom of the preform/container on a side of its inside, is not concave towards the container inside. Preferably, the lower pad has a shape of a spacer situated on this side of the container, which is not provided with the joint connection, preferably the lower support is provided with a joggle directed towards the outside of the container. The inside of the formed container is filled in with gas; the gas stiffens surfaces of the container and prevents from their indentation into the container inside. At this moment, value of pressure inside the container is strictly adjusted and it is equal preferably to not less than 2 bars.
In the third stage, after the inside of the container has been filled with the pressurized gas, the container is submitted to the operation of reinforcement of its outside surface by means of winding fibres impregnated with resin. Preferably, when during reinforcement of the outer surface, hardening resins containing fibres from the following group of fibres: glass or carbon or aramid or basalt or ceramide or several kinds of the above fibres at the same time are used. Preferably, when reinforcing is being performed at least once and with the application of at least two methods from among three considered as optimal for the method in accordance with the invention. These methods are: cross method consisting in simultaneous rotation of the container or the winding head around the container and shift of the head alongside the length of the container reaching an angle of inclination falling within the range from 49° up to 59°, the second method is a polar method according to which fibre is wound when the winding head moves between the poles of the container, and the above fibre passes every time around the joint connection. The third method of fibre winding is helical method, consisting in reinforcement of the cylindrical part of the container.
Individual packages of fibres are separated with a layer of resin from a group of polyester or epoxy resins. Depending on the kind of the used resin, the container wrapped with fibre passes to the furnace with the purpose to harden the resin or to initiate chemical reaction resulting in hardening of laminate. The successive packages with fibres form simultaneously an element fixing the joint connection pipe and the upper pad to the blow moulded preform. In the fourth stage, after the resin has been hardened, the container is covered with the coating protecting it against action of UV radiation, water, chemical substances and making it impact strength. In such coating, any additional technical information about the product, its exploitation and servicing can be inserted. During exploitation, along with grow in the pressure of the stored gas, a thrust on the sealing ring is also rising. As a result of the gas thrust, the sealing ring is deformed, exerting at the same time a thrust on at least one seal of O-ring type. Gas getting between the seal of O-ring type and the surface of the joint connection pipe , is closed after the seal and the ring have been deformed, thanks to which - pursuant to the energy conservation law - the thrust exerted on the joint connection pipe from the outside of the container and forces with which the joint connection pipe material acts on the sealing ring, are equalized. Then, the forces of interaction of the joint connection pipe on gas and of gas on the joint connection pipe are being reduced, ensuring stability of joint. The additional thrust exerted by gas on the sealing ring and at least one seal of O-ring type, results at the same time in additional tightening of the joint.
The high-pressure container manufactured with the application of the method in accordance with the invention is composed of the body constructed from the blow moulded preform and the matching joint connection pipe. Inside the blow moulded preform, on the side being opposite in relation to the joint connection pipe, the lower pad is situated whereas on the side of the joint connection pipe - the upper pad which mates with the joint connection pipe is situated. At the same time, the lower pad is preferably provided with the joggle directed outside the container. Preferably, after finishing of the container coating - this joggle is visible and/or protrudes outside of the container. On the side of the container inside, the joint connection pipe is provided with at least one groove for the sealing ring with at least one sealing ring situated in its inside as well as at least one groove for the seal of "ring/ring" type.
Matched together: the blow moulded preform, the joint connection pipe and lower and upper pads, are wrapped with the layers of laminate, which are additionally covered with a protective coating.
During exploitation, along with grow in the pressure of the stored gas, a thrust on the sealing ring is also rising. As a result of the gas thrust, the sealing ring is deformed, exerting at the same time a thrust on at least one seal of O-ring type. Gas getting between the seal of O-ring type and the surface of the joint connection pipe, is closed after the seal and the ring have been deformed, thanks to which - pursuant to the energy conservation law - the thrust exerted on the joint connection pipe from the outside of the container and forces with which the joint connection pipe material acts on the sealing ring, are equalized. Then, the forces of interaction of the joint connection pipe on gas and of gas on the joint connection pipe are being reduced, ensuring stability of joint. The additional thrust exerted by gas on the sealing ring and at least one seal of O-ring type, results at the same time in additional tightening of the joint.
The subject-matter in accordance with the invention has been presented in the figures, where the Fig.l shows the high-pressure container in a cross-section, Fig. 2. shows the joint connection pipe in a cross- section, Fig. 3. shows a view of ready-made high-pressure container according to the invention, Fig. 4. presents the polar method of lamination, Fig. 5 presents the cross method of lamination, Fig. 6 presents the helical method of lamination, Fig. 7 shows the container according to the invention provided with the lower pad in a preferable form, Fig. 8 shows the joint connection pipe in a preferable example of making, with blind holes in its upper surface.
Example I
The method according to the invention in the first stage includes manufacturing of a component being a preform (1) of the future container, with the application of any known technique of preforms making. The preform (1) is then blow moulded to obtain the required size and shape. The preform (1) is made of thermoplastic material, for example PET material. The second component used to produce the container in accordance with the invention, is the joint connection pipe (2).
Moreover, on the lower surface of the joint connection pipe (2), the grooves (4) and (5) radiate around the hole (3) of the joint connection pipe, the groove (4) contains the O-ring type seal (6) , whereas the second groove (5) situated in the close vicinity to it, contains the sealing ring (7). The joint connection pipe (2) is provided with the additional joggle (8) in a form of a ring situated around the hole (3) of the joint connection pipe (2). In the outer surface of the joint connection pipe (in relation to the container inside) (3), there are blind holes (15). During the container lamination, into the holes (15), the resin used in the production process is flowing in, which additionally stabilizes the joint connection pipe (3).
In the second stage, after leaving the form and the furnace, the blow moulded preform (1) is being matched with the joint connection pipe (2) as well as with the upper (9) and lower (10) pads. The upper pad (9) matches in shape with a shape of the recess (11) of the joint connection pipe (2). The lower pad (10) mating with the bottom of the preform (1) on a side of its inside, is not concave towards the container inside and has a shape of a spacer situated on this side of the container, which is not provided with the j oint connection pipe .
The inside of the formed container is filled in with gas; the gas stiffens surfaces of the container and prevents from their indentation into the container inside. At this moment, value of pressure inside the container is strictly adjusted and it is equal preferably to not less than 2 bars. In the third stage, after the inside of the container has been filled with the pressurized gas, the container is submitted to the operation of reinforcement of its outside surface by means of winding fibres impregnated with resin (12). For reinforcement of the outer surface, hardening resins containing fibres from the following group of fibres: glass or carbon or aramid or basalt or ceramide or several kinds of the above fibres at the same time are used. Reinforcing is being performed with the application of : the cross method consisting in simultaneous rotation of the container or the winding head around the container and shift of the head alongside the length of the container reaching an angle of inclination falling within the range from 49° up to 59°, and the polar method according to which fibre is wound when the winding head moves between the poles of the container, and the above fibre passes every time around the joint connection pipe.
Individual packages of fibres are separated with a layer of resin from a group of polyester or epoxy resins. Depending on the kind of the used resin, the container wrapped with fibre passes to the furnace with the purpose to harden the resin or to initiate chemical reaction resulting in hardening of laminate. The successive packages with fibres form simultaneously an element fixing the joint connection pipe and the upper pad to the blow moulded preform. In the fourth stage, after the resin has been hardened, the container is covered with the coating (13) protecting it against action of UV radiation, water, chemical substances and making it impact strength. In the coating (13), any additional technical information about the product, its exploitation and servicing can be inserted. The high-pressure container manufactured with the application of the method in accordance with the invention is composed of the body constructed from the blow moulded preform (1) and the matching joint connection pipe (2). Inside the blow moulded preform (1), on the side being opposite in relation to the joint connection pipe (2), the lower pad (10) is situated whereas on the side of the joint connection pipe (2) - the upper pad (9) which mates with the joint connection pipe (2) is situated. On the side of the container inside, the joint connection pipe (2) is provided with at least one groove (5) for the sealing ring with at least one sealing ring (7) situated in its inside as well as at least one groove for the seal of "ring/ring" type (4) with the seal of "ring/ring" type (6) situated in its inside.
Matched together: the blow moulded preform ( 1 ), the j oint connection pipe (2) and lower (10) and upper (9) pads, are wrapped with the layers of laminate ( 12), which are additionally covered with a protective coating (13). During exploitation, along with grow in the pressure of the stored gas, a thrust on the sealing ring (7) is also rising. As a result of the gas thrust, the sealing ring (7) is deformed, exerting at the same time a thrust on the O-ring type seal (6). Gas getting between the O-ring type seal (6) and the surface of the joint connection pipe (2), is closed after the seal (6) and the ring (7) have been deformed. Then - pursuant to the energy conservation law - the thrust exerted on the joint connection pipe (2) from the outside of the container and forces with which the joint connection pipe (2) material acts on the sealing ring (7) are equalized. Then, the forces of interaction of the joint connection on gas and of gas on the joint connection pipe are being reduced, ensuring stability of joint. The additional thrust exerted by gas on the sealing ring (7) and the seal (6) of O-ring type, results at the same time in additional tightening of the joint. Example II
The method according to the invention in the first stage includes manufacturing of a component being a preform (1) of the future container, with the application of any known technique of preforms making. The preform (1) is then blow moulded to obtain the required size and shape. The preform (1) is made of thermoplastic material, for example PET material. The second component used to produce the container in accordance with the invention, is the joint connection pipe (2). Moreover, on the lower surface of the joint connection pipe (2), the grooves (4) and (5) radiate around the hole (3) of the joint connection pipe, the groove (4) contains the O-ring type seal (6) , whereas the second groove (5) situated in the close vicinity to it, contains the sealing ring (7). The joint connection pipe (2) is provided with the additional joggle (8) in a form of a ring situated around the hole (3) of the joint connection pipe (2).
In the second stage, after leaving the form and the furnace, the blow moulded preform (1) is being matched with the joint connection pipe (2) as well as with the upper (9) and lower (10) pads. The upper pad (9) matches in shape with a shape of the recess (11) of the joint connection pipe (2). The lower pad (10) mating with the bottom of the preform (1) on a side of its inside, is not concave towards the container inside and has a shape of a spacer situated on this side of the container, which is not provided with the joint connection pipe.
The inside of the formed container is filled in with gas; the gas stiffens surfaces of the container and prevents from their indentation into the container inside. At this moment, value of pressure inside the container is strictly adjusted and it is equal preferably to not less than 2 bars.
In the third stage, after the inside of the container has been filled with the pressurized gas, the container is submitted to the operation of reinforcement of its outside surface by means of winding fibres impregnated with resin (12). For reinforcement of the outer surface, hardening resins containing fibres from the following group of fibres: glass or carbon or aramid or basalt or ceramide or several kinds of the above fibres at the same time are used. Reinforcing is being performed with the application of : the polar method according to which fibre is wound when the winding head moves between the poles of the container, and the above fibre passes every time around the joint connection pipe, and the helical method consisting in reinforcement of the cylindrical part of the container.
Individual packages of fibres are separated with a layer of resin from a group of polyester or epoxy resins. Depending on the kind of the used resin, the container wrapped with fibre passes to the furnace with the purpose to harden the resin or to initiate chemical reaction resulting in hardening of laminate. The successive packages with fibres form simultaneously an element fixing the joint connection pipe and the upper pad to the blow moulded preform. In the fourth stage, after the resin has been hardened, the container is covered with the coating (13) protecting it against action of UV radiation, water, chemical substances and making it impact strength. In the coating ( 13), any additional technical information about the product, its exploitation and servicing can be inserted. The high-pressure container manufactured with the application of the method in accordance with the invention is composed of the body constructed from the blow moulded preform (1) and the matching joint connection pipe (2). Inside the blow moulded preform (1), on the side being opposite in relation to the joint connection pipe (2), the lower pad (10) is situated whereas on the side of the joint connection pipe (2) - the upper pad (9) which mates with the joint connection pipe (2) is situated. On the side of the container inside, the joint connection pipe (2) is provided with at least one groove (5) for the sealing ring with at least one sealing ring (7) situated in its inside as well as at least one groove for the seal of "ring/ring" type (4) with the seal of "ring/ring" type (6) situated in its inside.
Matched together: the blow moulded preform (1), the joint connection pipe (2) and lower (10) and upper (9) pads, are wrapped with the layers of laminate (12), which are additionally covered with a protective coating (13). During exploitation, along with grow in the pressure of the stored gas, a thrust on the sealing ring (7) is also rising. As a result of the gas thrust, the sealing ring (7) is deformed, exerting at the same time a thrust on the O-ring type seal (6). Gas getting between the ring type seal (6) and the surface of the joint connection pipe (2), is closed after the seal (6) and the ring (7) have been deformed. Then - pursuant to the energy conservation law - the thrust exerted on the joint connection pipe (2) from the outside of the container and forces with which the joint connection pipe (2) material acts on the sealing ring (7) are equalized. Then, the forces of interaction of the joint connection pipe on gas and of gas on the joint connection pipe are being reduced, ensuring stability of joint. The additional thrust exerted by gas on the sealing ring (7) and the seal (6) of O-ring type, results at the same time in additional tightening of the joint. Example III
The method according to the invention in the first stage includes manufacturing of a component being a preform (1) of the future container, with the application of any known technique of preforms making. The preform (1) is then blow moulded to obtain the required size and shape. The preform (1) is made of thermoplastic material, for example PET material. The second component used to produce the container in accordance with the invention, is the joint connection pipe (2). Moreover, on the lower surface of the joint connection pipe (2), the grooves (4) and (5) radiate around the hole (3) of the joint connection, the groove (4) contains the ring type seal (6), whereas the second groove (5) situated in the close vicinity to it, contains the sealing ring (7). The joint connection pipe (2) is provided with the additional joggle (8) in a form of a ring situated around the hole (3) of the joint connection pipe (2).
In the second stage, after leaving the form and the furnace, the blow moulded preform (1) is being matched with the joint connection pipe (2) as well as with the upper (9) and lower (10) pads. The upper pad (9) matches in shape with a shape of the recess (11) of the joint connection pipe (2). The lower pad (10) mating with the bottom of the preform (1) on a side of its inside, is not concave towards the container inside and has a shape of a spacer situated on this side of the container, which is not provided with the joint connection pipe.
The inside of the formed container is filled in with gas; the gas stiffens surfaces of the container and prevents from their indentation into the container inside. At this moment, value of pressure inside the container is strictly adjusted and it is equal preferably to not less than 2 bars.
In the third stage, after the inside of the container has been filled with the pressurized gas, the container is submitted to the operation of reinforcement of its outside surface by means of winding fibres impregnated with resin (12). For reinforcement of the outer surface, hardening resins containing fibres from the following group of fibres: glass or carbon or aramid or basalt or ceramide or several kinds of the above fibres at the same time are used. Reinforcing is being performed with the application of : the cross method consisting in simultaneous rotation of the container or the winding head around the container and shift of the head alongside the length of the container reaching an angle of inclination falling within the range from 49° up to 59°, and the helical method consisting in reinforcement of the cylindrical part of the container.
Individual packages of fibres are separated with a layer of resin from a group of polyester or epoxy resins. Depending on the kind of the used resin, the container wrapped with fibre passes to the furnace with the purpose to harden the resin or to initiate chemical reaction resulting in hardening of laminate. The successive packages with fibres form simultaneously an element fixing the joint connection pipe and the upper pad to the blow moulded preform.
In the fourth stage, after the resin has been hardened, the container is covered with the coating (13) protecting it against action of UV radiation, water, chemical substances and making it impact strength. In the coating ( 13), any additional technical information about the product, its exploitation and servicing can be inserted.
The high-pressure container manufactured with the application of the method in accordance with the invention is composed of the body constructed from the blow moulded preform (1) and the matching joint connection pipe (2). Inside the blow moulded preform (1), on the side being opposite in relation to the joint connection pipe (2) , the lower pad (10) is situated whereas on the side of the joint connection pipe (2) - the upper pad (9) which mates with the joint connection pipe (2) is situated. On the side of the container inside, the joint connection pipe (2) is provided with at least one groove (5) for the sealing ring with at least one sealing ring (7) situated in its inside as well as at least one groove for the seal of "ring/ring" type (4) with the seal of "ring/ring" type (6) situated in its inside.
Matched together: the blow moulded preform ( 1 ), the j oint connection pipe (2) and lower (10) and upper (9) pads, are wrapped with the layers of laminate ( 12), which are additionally covered with a protective coating (13).
During exploitation, along with grow in the pressure of the stored gas, a thrust on the sealing ring (7) is also rising. As a result of the gas thrust, the sealing ring (7) is deformed, exerting at the same time a thrust on the O-ring type seal (6). Gas getting between the ring type seal (6) and the surface of the joint connection pipe (2), is closed after the seal (6) and the ring (7) have been deformed. Then - pursuant to the energy conservation law - the thrust exerted on the joint connection pipe (2) from the outside of the container and forces with which the joint connection pipe (2) material acts on the sealing ring (7) are equalized. Then, the forces of interaction of the joint connection pipe on gas and of gas on the joint connection pipe are being reduced, ensuring stability of joint. The additional thrust exerted by gas on the sealing ring (7) and the seal (6) of O-ring type, results at the same time in additional tightening of the joint. Example IV
The method according to the invention in the first stage includes manufacturing of a component being a preform (1) of the future container, with the application of any known technique of preforms making. The preform (1) is then blow moulded to obtain the required size and shape. The preform (1 ) is made of thermoplastic material, for example PET material. The second component used to produce the container in accordance with the invention, is the joint connection pipe (2).
Moreover, on the lower surface of the joint connection pipe (2), the grooves (4) and (5) radiate around the hole (3) of the joint connection pipe, the groove (4) contains the ring type seal (6), whereas the second groove
(5) situated in the close vicinity to it, contains the sealing ring (7). The joint connection pipe (2) is provided with the additional joggle (8) in a form of a ring situated around the hole (3) of the joint connection pipe (2). In the second stage, after leaving the form and the furnace, the blow moulded preform (1) is being matched with the joint connection pipe (2) as well as with the upper (9) and lower (10) pads. The upper pad (9) matches in shape with a shape of the recess (11) of the joint connection pipe (2).
The lower pad (10) mating with the bottom of the preform (1) on a side of its inside, is not concave towards the container inside and has a shape of a spacer situated on this side of the container, which is not provided with the joint connection pipe.
The inside of the formed container is filled in with gas; the gas stiffens surfaces of the container and prevents from their indentation into the container inside. At this moment, value of pressure inside the container is strictly adjusted and it is equal preferably to not less than 2 bars. In the third stage, after the inside of the container has been filled with the pressurized gas, the container is submitted to the operation of reinforcement of its outside surface by means of winding fibres impregnated with resin (12). For reinforcement of the outer surface, hardening resins containing fibres from the following group of fibres: glass or carbon or aramid or basalt or ceramide or several kinds of the above fibres at the same time are used. Reinforcing is being performed with the application of : the polar method according to which fibre is wound when the winding head moves between the poles of the container and the above fibre passes every time around the joint connection pipe, and the cross method consisting in simultaneous rotation of the container or the winding head around the container and shift of the head alongside the length of the container reaching an angle of inclination falling within the range from 49° up to 59°. Individual packages of fibres are separated with a layer of resin from a group of polyester or epoxy resins. Depending on the kind of the used resin, the container wrapped with fibre passes to the furnace with the purpose to harden the resin or to initiate chemical reaction resulting in hardening of laminate. The successive packages with fibres form simultaneously an element fixing the joint connection pipe and the upper pad to the blow moulded preform.
In the fourth stage, after the resin has been hardened, the container is covered with the coating (13) protecting it against action of UV radiation, water, chemical substances and making it impact strength. In the coating (13), any additional technical information about the product, its exploitation and servicing can be inserted. The high-pressure container manufactured with the application of the method in accordance with the invention is composed of the body constructed from the blow moulded preform (1) and the matching joint connection pipe (2). Inside the blow moulded preform (1), on the side being opposite in relation to the joint connection pipe (2) , the lower pad (10) is situated whereas on the side of the joint connection pipe (2) - the upper pad (9) which mates with the joint connection pipe (2) is situated. On the side of the container inside, the joint connection pipe (2) is provided with at least one groove (5) for the sealing ring with at least one sealing ring (7) situated in its inside as well as at least one groove for the seal of "ring/ring" type (4) with the seal of "ring/ring" type (6) situated in its inside.
Matched together: the blow moulded preform ( 1 ), the j oint connection pipe (2) and lower (10) and upper (9) pads, are wrapped with the layers of laminate ( 12), which are additionally covered with a protective coating (13).
During exploitation, along with grow in the pressure of the stored gas, a thrust on the sealing ring (7) is also rising. As a result of the gas thrust, the sealing ring (7) is deformed, exerting at the same time a thrust on the O-ring type seal (6). Gas getting between the ring type seal (6) and the surface of the joint connection pipe (2), is closed after the seal (6) and the ring (7) have been deformed. Then - pursuant to the energy conservation law - the thrust exerted on the joint connection pipe (2) from the outside of the container and forces with which the joint connection pipe (2) material acts on the sealing ring (7) are equalized. Then, the forces of interaction of the joint connection pipe on gas and of gas on the joint connection pipe are being reduced, ensuring stability of joint. The additional thrust exerted by gas on the sealing ring (7) and the seal (6) of O-ring type, results at the same time in additional tightening of the joint. Example V The method according to the invention in the first stage includes manufacturing of a component being a preform (1) of the future container, with the application of any known technique of preforms making. The preform (1) is then blow moulded to obtain the required size and shape. The preform (1) is made of thermoplastic material, for example PET material. The second component used to produce the container in accordance with the invention, is the joint connection pipe (2).
Moreover, on the lower surface of the joint connection pipe (2), the grooves (4) and (5) radiate around the hole (3) of the joint connection pipe, the groove (4) contains the ring type seal (6), whereas the second groove (5) situated in the close vicinity to it, contains the sealing ring (7). The joint connection pipe (2) is provided with the additional joggle (8) in a form of a ring situated around the hole (3) of the joint connection pipe (2).
In the second stage, after leaving the form and the furnace, the blow moulded preform (1) is being matched with the joint connection pipe (2) as well as with the upper (9) and lower (10) pads. The upper pad (9) matches in shape with a shape of the recess (11) of the joint connection pipe (2). The lower pad (10) mating with the bottom of the preform (1) on a side of its inside, is not concave towards the container inside and has a shape of a spacer situated on this side of the container, which is not provided with the joint connection pipe. The inside of the formed container is filled in with gas; the gas stiffens surfaces of the container and prevents from their indentation into the container inside. At this moment, value of pressure inside the container is strictly adjusted and it is equal preferably to not less than 2 bars. In the third stage, after the inside of the container has been filled with the pressurized gas, the container is submitted to the operation of reinforcement of its outside surface by means of winding fibres impregnated with resin (12). For reinforcement of the outer surface, hardening resins containing fibres from the following group of fibres: glass or carbon or aramid or basalt or ceramide or several kinds of the above fibres at the same time are used. Reinforcing is being performed with the application of: the helical method consisting in reinforcement of the cylindrical part of the container, and the polar method according to which fibre is wound when the winding head moves between the poles of the container and the above fibre passes every time around the joint connection pipe.
Individual packages of fibres are separated with a layer of resin from a group of polyester or epoxy resins. Depending on the kind of the used resin, the container wrapped with fibre passes to the furnace with the purpose to harden the resin or to initiate chemical reaction resulting in hardening of laminate. The successive packages with fibres form simultaneously an element fixing the joint connection pipe and the upper pad to the blow moulded preform.
In the fourth stage, after the resin has been hardened, the container is covered with the coating (13) protecting it against action of UV radiation, water, chemical substances and making it impact strength. In the coating ( 13), any additional technical information about the product, its exploitation and servicing can be inserted.
The high-pressure container manufactured with the application of the method in accordance with the invention is composed of the body constructed from the blow moulded preform (1) and the matching joint connection pipe (2). Inside the blow moulded preform (1) , on the side being opposite in relation to the joint connection pipe (2), the lower pad (10) is situated whereas on the side of the joint connection pipe (2) - the upper pad (9) which mates with the joint connection pipe (2) is situated. On the side of the container inside, the joint connection pipe (2) is provided with at least one groove (5) for the sealing ring with at least one sealing ring (7) situated in its inside as well as at least one groove for the seal of "ring/ring" type (4) with the seal of "ring/ring" type (6) situated in its inside. Matched together: the blow moulded preform ( 1 ), the j oint connection pipe (2) and lower (10) and upper (9) pads, are wrapped with the layers of laminate ( 12), which are additionally covered with a protective coating (13).
During exploitation, along with grow in the pressure of the stored gas, a thrust on the sealing ring (7) is also rising. As a result of the gas thrust, the sealing ring (7) is deformed, exerting at the same time a thrust on the O-ring type seal (6). Gas getting between the ring type seal (6) and the surface of the joint connection pipe (2), is closed after the seal (6) and the ring (7) have been deformed. Then - pursuant to the energy conservation law - the thrust exerted on the joint connection pipe (2) from the outside of the container and forces with which the joint connection pipe (2) material acts on the sealing ring (7) are equalized. Then, the forces of interaction of the joint connection on gas and of gas on the joint connection pipe are being reduced, ensuring stability of joint. The additional thrust exerted by gas on the sealing ring (7) and the seal (6) of O-ring type, results at the same time in additional tightening of the joint. Example VI
The method according to the invention in the first stage includes manufacturing of a component being a preform (1) of the future container, with the application of any known technique of preforms making. The preform (1) is then blow moulded to obtain the required size and shape. The preform (1) is made of thermoplastic material, for example PET material. The second component used to produce the container in accordance with the invention, is the joint connection pipe (2).
Moreover, on the lower surface of the joint connection (2), the grooves (4) and (5) radiate around the hole (3) of the joint connection pipe, the groove (4) contains the ring type seal (6), whereas the second groove (5) situated in the close vicinity to it, contains the sealing ring (7). The joint connection pipe (2) is provided with the additional joggle (8) in a form of a ring situated around the hole (3) of the joint connection pipe (2). In the second stage, after leaving the form and the furnace, the blow moulded preform (1) is being matched with the joint connection pipe (2) as well as with the upper (9) and lower (10) pads. The upper pad (9) matches in shape with a shape of the recess (11) of the joint connection pipe (2). The lower pad (10) mating with the bottom of the preform (1) on a side of its inside, is not concave towards the container inside and has a shape of a spacer situated on this side of the container, which is not provided with the joint connection pipe.
The inside of the formed container is filled in with gas; the gas stiffens surfaces of the container and prevents from their indentation into the container inside. At this moment, value of pressure inside the container is strictly adjusted and it is equal preferably to not less than 2 bars.
In the third stage, after the inside of the container has been filled with the pressurized gas, the container is submitted to the operation of reinforcement of its outside surface by means of winding fibres impregnated with resin (12). For reinforcement of the outer surface, hardening resins containing fibres from the following group of fibres: glass or carbon or aramid or basalt or ceramide or several kinds of the above fibres at the same time are used. Reinforcing is being performed with the application of: the helical method consisting in reinforcement of the cylindrical part of the container, and the cross method consisting in simultaneous rotation of the container or the winding head around the container and shift of the head alongside the length of the container reaching an angle of inclination falling within the range from 49° up to 59°.
Individual packages of fibres are separated with a layer of resin from a group of polyester or epoxy resins. Depending on the kind of the used resin, the container wrapped with fibre passes to the furnace with the purpose to harden the resin or to initiate chemical reaction resulting in hardening of laminate. The successive packages with fibres form simultaneously an element fixing the joint connection pipe and the upper pad to the blow moulded preform. In the fourth stage, after the resin has been hardened, the container is covered with the coating (13) protecting it against action of UV radiation, water, chemical substances and making it impact strength. In the coating
( 13), any additional technical information about the product, its exploitation and servicing can be inserted.
The high-pressure container manufactured with the application of the method in accordance with the invention is composed of the body constructed from the blow moulded preform (1) and the matching joint connection pipe (2). Inside the blow moulded preform (1), on the side being opposite in relation to the joint connection pipe (2) , the lower pad (10) is situated whereas on the side of the joint connection pipe (2) - the upper pad (9) which mates with the joint connection pipe (2) is situated. On the side of the container inside, the joint connection pipe (2) is provided with at least one groove (5) for the sealing ring with at least one sealing ring (7) situated in its inside as well as at least one groove for the seal of "ring/ring" type (4) with the seal of "ring/ring" type (6) situated in its inside.
Matched together: the blow moulded preform (1), the joint connection pipe (2) and lower (10) and upper (9) pads, are wrapped with the layers of laminate ( 12), which are additionally covered with a protective coating (13).
During exploitation, along with grow in the pressure of the stored gas, a thrust on the sealing ring (7) is also rising. As a result of the gas thrust, the sealing ring (7) is deformed, exerting at the same time a thrust on the O-ring type seal (6). Gas getting between the ring type seal (6) and the surface of the joint connection pipe (2), is closed after the seal (6) and the ring (7) have been deformed. Then - pursuant to the energy conservation law - the thrust exerted on the joint connection pipe (2) from the outside of the container and forces with which the joint connection pipe (2) material acts on the sealing ring (7) are equalized. Then, the forces of interaction of the joint connection pipe on gas and of gas on the joint connection pipe are being reduced, ensuring stability of joint. The additional thrust exerted by gas on the sealing ring (7) and the seal (6) of O-ring type, results at the same time in additional tightening of the joint. Example VII The method according to the invention in the first stage includes manufacturing of a component being a preform (1) of the future container, with the application of any known technique of preforms making. The preform (1) is then blow moulded to obtain the required size and shape. The preform (1) is made of thermoplastic material, for example PET material. The second component used to produce the container in accordance with the invention, is the joint connection pipe (2).
Moreover, on the lower surface of the joint connection pipe (2) , the grooves (4) and (5) radiate around the hole (3) of the joint connection pipe, the groove (4) contains the ring type seal (6), whereas the second groove (5) situated in the close vicinity to it, contains the sealing ring (7). The joint connection pipe (2) is provided with the additional joggle (8) in a form of a ring situated around the hole (3) of the joint connection pipe (2).
In the second stage, after leaving the form and the furnace, the blow moulded preform (1) is being matched with the joint connection pipe (2) as well as with the upper (9) and lower (10) pads. The upper pad (9) matches in shape with a shape of the recess (11) of the joint connection pipe (2). The lower pad (10) mating with the bottom of the preform (1) on a side of its inside, is not concave towards the container inside and has a shape of a spacer situated on this side of the container, which is not provided with the joint connection pipe. The inside of the formed container is filled in with gas; the gas stiffens surfaces of the container and prevents from their indentation into the container inside. At this moment, value of pressure inside the container is strictly adjusted and it is equal preferably to not less than 2 bars.
In the third stage, after the inside of the container has been filled with the pressurized gas, the container is submitted to the operation of reinforcement of its outside surface by means of winding fibres impregnated with resin (12). For reinforcement of the outer surface, hardening resins containing fibres from the following group of fibres: glass or carbon or aramid or basalt or ceramide or several kinds of the above fibres at the same time are used. Reinforcing is being performed with the application of: the helical method consisting in reinforcement of the cylindrical part of the container, and the cross method consisting in simultaneous rotation of the container or the winding head around the container and shift of the head alongside the length of the container reaching an angle of inclination falling within the range from 49° up to 59°.
Individual packages of fibres are separated with a layer of resin from a group of polyester or epoxy resins. Depending on the kind of the used resin, the container wrapped with fibre passes to the furnace with the purpose to harden the resin or to initiate chemical reaction resulting in hardening of laminate. The successive packages with fibres form simultaneously an element fixing the joint connection and the upper pad to the blow moulded preform.
In the fourth stage, after the resin has been hardened, the container is covered with the coating (13) protecting it against action of UV radiation, water, chemical substances and making it impact strength. In the coating
(13), any additional technical information about the product, its exploitation and servicing can be inserted.
The high-pressure container manufactured with the application of the method in accordance with the invention is composed of the body constructed from the blow moulded preform (1) and the matching joint connection pipe (2). Inside the blow moulded preform (1), on the side being opposite in relation to the joint connection pipe (2), the lower pad (10) provided with the joggle (14) is situated whereas on the side of the joint connection pipe (2) - the upper pad (9) which mates with the joint connection pipe (2) is situated. On the side of the container inside, the joint connection pipe (2) is provided with at least one groove (5) for the sealing ring with at least one sealing ring (7) situated in its inside as well as at least one groove for the seal of "ring/ring" type (4) with the seal of "ring/ring" type (6) situated in its inside. Matched together: the blow moulded preform ( 1 ), the j oint connection pipe (2) and lower (10) and upper (9) pads, are wrapped with the layers of laminate ( 12), which are additionally covered with a protective coating (13).
During exploitation, along with grow in the pressure of the stored gas, a thrust on the sealing ring (7) is also rising. As a result of the gas thrust, the sealing ring (7) is deformed, exerting at the same time a thrust on the O-ring type seal (6). Gas getting between the ring type seal (6) and the surface of the joint connection pipe (2), is closed after the seal (6) and the ring (7) have been deformed. Then - pursuant to the energy conservation law - the thrust exerted on the joint connection pipe (2) from the outside of the container and forces with which the joint connection pipe (2) material acts on the sealing ring (7) are equalized. Then, the forces of interaction of the joint connection pipe on gas and of gas on the joint connection pipe are being reduced, ensuring stability of joint. The additional thrust exerted by gas on the sealing ring (7) and the seal (6) of O-ring type, results at the same time in additional tightening of the joint. Example VIII
The method according to the invention in the first stage includes manufacturing of a component being a preform (1) of the future container, with the application of any known technique of preforms making. The preform (1) is then blow moulded to obtain the required size and shape. The preform (1) is made of thermoplastic material, for example PET material. The second component used to produce the container in accordance with the invention, is the joint connection pipe (2).
Moreover, on the lower surface of the joint connection pipe (2) , the grooves (4) and (5) radiate around the hole (3) of the joint connection pipe, the groove (4) contains the ring type seal (6), whereas the second groove (5) situated in the close vicinity to it, contains the sealing ring (7). The joint connection pipe (2) is provided with the additional joggle (8) in a form of a ring situated around the hole (3) of the joint connection pipe (2). In the outer surface of the joint connection pipe (in relation to the container inside) (3), there are blind holes (15). During the container lamination, into the holes (15), the resin used in the production process is flowing in, which additionally stabilizes the joint connection pipe (3).
In the second stage, after leaving the form and the furnace, the blow moulded preform (1) is being matched with the joint connection pipe (2) as well as with the upper (9) and lower (10) pads. The upper pad (9) matches in shape with a shape of the recess (11) of the joint connection pipe (2). The lower pad (10) mating with the bottom of the preform (1) on a side of its inside, is not concave towards the container inside and has a shape of a spacer situated on this side of the container, which is not provided with the j oint connection pipe .
The inside of the formed container is filled in with gas; the gas stiffens surfaces of the container and prevents from their indentation into the container inside. At this moment, value of pressure inside the container is strictly adjusted and it is equal preferably to not less than 2 bars. In the third stage, after the inside of the container has been filled with the pressurized gas, the container is submitted to the operation of reinforcement of its outside surface by means of winding fibres impregnated with resin (12). For reinforcement of the outer surface, hardening resins containing fibres from the following group of fibres: glass or carbon or aramid or basalt or ceramide or several kinds of the above fibres at the same time are used. Reinforcing is being performed with the application of: the cross method consisting in simultaneous rotation of the container or the winding head around the container and shift of the head alongside the length of the container reaching an angle of inclination falling within the range from 49° up to 59°, and the polar method according to which fibre is wound when the winding head moves between the poles of the container and the above fibre passes every time around the joint connection pipe.
Individual packages of fibres are separated with a layer of resin from a group of polyester or epoxy resins. Depending on the kind of the used resin, the container wrapped with fibre passes to the furnace with the purpose to harden the resin or to initiate chemical reaction resulting in hardening of laminate. The successive packages with fibres form simultaneously an element fixing the joint connection and the upper pad to the blow moulded preform. In the fourth stage, after the resin has been hardened, the container is covered with the coating (13) protecting it against action of UV radiation, water, chemical substances and making it impact strength. In the coating ( 13), any additional technical information about the product, its exploitation and servicing can be inserted. The high-pressure container manufactured with the application of the method in accordance with the invention is composed of the body constructed from the blow moulded preform (1) and the matching joint connection pipe (2). Inside the blow moulded preform (1), on the side being opposite in relation to the joint connection pipe (2), the lower pad (10), whereas on the side of the joint connection pipe (2) - the upper pad (9) which mates with the joint connection pipe (2) is situated. The lower pad (10) is provided with the joggle (14) being visible after the outer coating of the container has been finished. On the side of the container inside, the joint connection pipe (2) is provided with at least one groove (5) for the sealing ring with at least one sealing ring (7) situated in its inside as well as at least one groove for the seal of "ring/ring" type (4) with the seal of "ring/ring" type (6) situated in its inside.
Matched together: the blow moulded preform ( 1 ), the j oint connection pipe (2) and lower (10) and upper (9) pads, are wrapped with the layers of laminate ( 12), which are additionally covered with a protective coating (13).
During exploitation, along with grow in the pressure of the stored gas, a thrust on the sealing ring (7) is also rising. As a result of the gas thrust, the sealing ring (7) is deformed, exerting at the same time a thrust on the O-ring type seal (6). Gas getting between the ring type seal (6) and the surface of the joint connection pipe (2), is closed after the seal (6) and the ring (7) have been deformed. Then - pursuant to the energy conservation law - the thrust exerted on the joint connection pipe (2) from the outside of the container and forces with which the joint connection pipe (2) material acts on the sealing ring (7) are equalized. Then, the forces of interaction of the joint connection pipe on gas and of gas on the joint connection pipe are being reduced, ensuring stability of joint. The additional thrust exerted by gas on the sealing ring (7) and the seal (6) of O-ring type, results at the same time in additional tightening of the joint. Example IX
The method according to the invention in the first stage includes manufacturing of a component being a preform (1) of the future container, with the application of any known technique of preforms making. The preform (1) is then blow moulded to obtain the required size and shape. The preform (1) is made of thermoplastic material, for example PET material . The second component used to produce the container in accordance with the invention, is the joint connection pipe (2).
Moreover, on the lower surface of the joint connection pipe (2) , the grooves (4) and (5) radiate around the hole (3) of the joint connection pipe, the groove (4) contains the ring type seal (6), whereas the second groove (5) situated in the close vicinity to it, contains the sealing ring (7). The joint connection pipe (2) is provided with the additional joggle (8) in a form of a ring situated around the hole (3) of the joint connection pipe (2).
In the second stage, after leaving the form and the furnace, the blow moulded preform (1) is being matched with the joint connection pipe (2) as well as with the upper (9) and lower (10) pads. The upper pad (9) matches in shape with a shape of the recess (11) of the joint connection pipe (2).
The lower pad (10) mating with the bottom of the preform (1) on a side of its inside, is not concave towards the container inside and has a shape of a spacer situated on this side of the container, which is not provided with the joint connection pipe.
The inside of the formed container is filled in with gas; the gas stiffens surfaces of the container and prevents from their indentation into the container inside. At this moment, value of pressure inside the container is strictly adjusted and it is equal preferably to not less than 2 bars.
In the third stage, after the inside of the container has been filled with the pressurized gas, the container is submitted to the operation of reinforcement of its outside surface by means of winding fibres impregnated with resin (12). For reinforcement of the outer surface, hardening resins containing fibres from the following group of fibres: glass or carbon or aramid or basalt or ceramide or several kinds of the above fibres at the same time are used. Reinforcing is being performed with the application of: the helical method consisting in reinforcement of the cylindrical part of the container, and the cross method consisting in simultaneous rotation of the container or the winding head around the container and shift of the head alongside the length of the container reaching an angle of inclination falling within the range from 49° up to 59°.
Individual packages of fibres are separated with a layer of resin from a group of polyester or epoxy resins. Depending on the kind of the used resin, the container wrapped with fibre passes to the furnace with the purpose to harden the resin or to initiate chemical reaction resulting in hardening of laminate. The successive packages with fibres form simultaneously an element fixing the joint connection and the upper pad to the blow moulded preform.
In the fourth stage, after the resin has been hardened, the container is covered with the coating (13) protecting it against action of UV radiation, water, chemical substances and making it impact strength. In the coating ( 13 ), any additional technical information about the product, its exploitation and servicing can be inserted.
The high-pressure container manufactured with the application of the method in accordance with the invention is composed of the body constructed from the blow moulded preform (1) and the matching joint connection pipe (2). Inside the blow moulded preform (1), on the side being opposite in relation to the joint connection pipe (2), the lower pad (10) provided with the joggle (14) whereas on the side of the joint connection pipe (2) - the upper pad (9) which mates with the joint connection pipe (2) is situated. And the joggle (14) of the lower pad (10) protrudes above the outer surface of the container. On the side of the container inside, the joint connection pipe (2) is provided with at least one groove (5) for the sealing ring with at least one sealing ring (7) situated in its inside as well as at least one groove for the seal of "ring/ring" type (4) with the seal of "ring/ring" type (6) situated in its inside.
Matched together: the blow moulded preform ( 1 ), the j oint connection pipe (2) and lower (10) and upper (9) pads, are wrapped with the layers of laminate ( 12), which are additionally covered with a protective coating (13). During exploitation, along with grow in the pressure of the stored gas, a thrust on the sealing ring (7) is also rising. As a result of the gas thrust, the sealing ring (7) is deformed, exerting at the same time a thrust on the O-ring type seal (6). Gas getting between the ring type seal (6) and the surface of the joint connection pipe (2), is closed after the seal (6) and the ring (7) have been deformed. Then - pursuant to the energy conservation law - the thrust exerted on the joint connection pipe (2) from the outside of the container and forces with which the joint connection pipe (2) material acts on the sealing ring (7) are equalized. Then, the forces of interaction of the joint connection pipe on gas and of gas on the joint connection pipe are being reduced, ensuring stability of joint. The additional thrust exerted by gas on the sealing ring (7) and the seal (6) of O-ring type, results at the same time in additional tightening of the joint.
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