Technical Field of the Invention

The present invention relates to a dismantling j oint having a novel design, which is made for facilitating the mounting - dismantling process in valves . The inventive dismantling j oint having a novel design particularly relates to a sealing element positioned between the flanged inner pipe and the flanged outer pipe .

Prior Art

The dismantling j oints used in pipelines in the state of the art consist of the flanged inner pipe and flanged outer pipe pieces that function inside of each other and moves telescopically, a triquetrous rubber sealing element which provides sealing between two pipes , an intermediate flange which applies pressure on this ring , stud bolts , and nuts .

The dismantling j oint assembled by means of stud bolts , which are inserted through flange holes of the flanged inner pipe and flanged outer pipe and intermediate flange , and nuts , which function on stud bolts , is used for constituting dismantl ing hole , that i s required to remove a component from the pipeline of which it is connected .

So as to remove a valve or similar component from the pipeline , firstly, it is necessary to eliminate the pressure , which is applied by an intermediate flange to triquetrous rubber sealing element , by loosening the nuts that push intermediate flange .

Then, the length of the dismantling j oint is shortened by loosening the other nuts on the stud bolts which allows the flanged inner and flanged outer pipes to move inside each other . This shortening operation allows for creating a dismantling hole which allows the dismantling of the piece that is removed from the line on the pipeline . After placing the component on the line by means of using dismantling hole available on the component for remounting on the line , the movement between the flanged inner pipe and flanged outer pipe is provided by moving nuts on stud bolts and dismantling hole which i s constituted for the dismantling process is removed by extending the length of the dismantling j oint .

After tightening the nuts , which allows for mounting the component , it is ensured that the triquetrous rubber sealing element is fitted into the socket by tightening the nuts , which apply pressure on the intermediate flange , and the necessary pressure is created in order to provide tightness .

The greatest obstacle in implementations in the state of the art is the necessity to rotate and draw back the stud bolts and rotating the nuts again due to the limited distance for providing stud bolts to be removed from the holes of the flange of the component , which will be removed from the line , for removing the component from the l ine , and this process may be repeated many times due to the increasing number of the stud bolts and nuts in compliance with the si ze of the dismantl ing j oint .

The process of pushing the stud bolts forward by rotating the nuts in the limited distance for all stud bolts to be passed through the opposite flange is repeated once again for mounting . This method is considerably time-consuming and makes implementation harder to conduct .

In order to prevent the pressuri zed liquid, which exists in the pipeline in the operating conditions , from leaking out, it is necessary that the triquetrous rubber sealing element to be under pressure al l the time . Leaking occurs when the pressure is decreased in the case where nuts are loosened for any reason .

In addition, since the triquetrous rubber sealing element constantly functions under pressure , plastic shape changes and surface deformation arising from frictional force may occur and this situation may cause sealing problems .

When the triquetrous rubber sealing element in the dismantling j oint , which is used in the environment with sunlight, i s exposed to the sunlight , this situation may cause chemical deterioration and check cracks . This situation may lead the dismantl ing j oint to generate leakage .

Also, in the state of the art, the dismantling j oint has a significantly long and heavy structure even if it can create a short dismantling hole since there are intermediate f lange and numerous nuts on the dismantling j oint .

The inventive dismantling j oint having a novel design has a light, durable , and highly reliable structure which is des igned to eliminate the difficulties and disadvantages in the implementations in the state of the art .

OBJECTS OF THE INVENTION

The advantages of the dismantling j oint having a novel design, which is designed to provide solutions to the problems of the state of the art, are stated below .

• The x-cut rubber sealing element is used by changing the shape of the triquetrous rubber sealing element . By placing this sealing element on a channel , which is opened on the flanged inner pipe , a structure that provides high-performance sealing without requiring pressure on the inventive novel dismantling j oint is formed .

• Not requiring the pressure for sealing eliminates the necessity of intermediate flange and this enables dismantling j oint to become lighter and to increase its functionality by reducing the pieces of the dismantling j oint .

• Not having pressure on the sealing element makes the sealing element long-lasting .

• The fact that the sealing element remains between the two flanges ensures that the sealing part is long-lasting by ensuring that it is not directly exposed to sunlight in open environments .

• Not having an intermediate flange on dismantling j oint having a novel design eliminates the necess ity of stud bolts . When a conventional dismantling j oint is connected to the line by means of stud bolts and nuts placed thereon, the present invention ensures that the inventive dismantling j oint having a novel design is connected to the line by means of bolts and nuts that are lighter, easier to use and low-priced . This not only decreases the initial mounting cost but also eliminates the problems arising from the use of stud bolts during operation .

• Owing to the advantages listed above , since the dismantling j oint , of which length is decreased, becomes more compact , and it saves space during use , shipment , and storage (averagely 25% shorter ) .

• Overall costs are reduced due to the decrease in the number of pieces and the amount of weight ( averagely 30% l ighter ) .

• Since the sealing element of the inventive dismantling j oint having a novel des ign does not need any pressure , it offers high sealing performance and reduces the potential risks .

• There is a significant decrease in the duration of the mounting and dismantling operations under the operating conditions .

DETAILED DESCRIPTION OF THE INVENTION

The structure of the dismantling j oint in the state of the art and the structure of the invention is shown in the attached figures .

FIGURE 1 illustrates the view of the di smantling j oint in the state of the art on the pipeline .

FIGURE 2 illustrates the sectional view of the dismantling j oint in the state of the art .

FIGURE 3 illustrates the view of the inventive dismantling j oint having a novel design on the pipeline .

FIGURE 4 illustrates the sectional view of the inventive dismantling j oint having a novel design .

To provide a better understanding of the inventive dismantling j oint having a novel design, parts in figures are enumerated with reference numbers . Wherein; 1. Flanged outer pipe

2. Flanged inner pipe

3. X-cut sealing element

4. Bolts

5. Nuts

6. Channel

The parts that are present in the conventional dismantling joint and not available in the inventive dismantling joint having a novel design are listed as follows.

7. Stud bolt

8. Intermediate flange

9. Triquetrous sealing element

The inventive dismantling joint having a novel design illustrated in Figures 3 and 4, comprises flanged outer pipe (1) , flanged inner pipe (2) , and sealing element (3) as main components. Typically, the length of the flanged inner pipe (2) is longer than the length of the flanged outer pipe ( 1) .

The intermediate flange (8) and stud bolts (7) that immobilize flanged inner and outer pipe to the intermediate flange, which is illustrated in Figures 1 and 2, are not found in the novel design. Since these parts are not present, the length and weight of the dismantling joint decrease considerably. In addition thereto, during the mounting-dismantling process, it is not necessary to tighten and loosen each of said stud bolts one by one respectively, and this ensures that the duration of the process is shortened 60%.

On the other hand, the sealing element (3) used in the state of the art instead of the triquetrous sealing element, which contacts with at least two points, is used in the inventive dismantling joint having a novel design. The sealing element (3) which is preferably used in X-cut form can also be used in H-cut form or in different cut forms such that they come into contact with at least two points . The present result was obtained after evaluating the alternate solutions in determining the sealing element (3) . Initially, the O-ring was considered as an alternate sealing element (3) . Although O-rings provide proper solutions in static (immobile) applications and radial (rotational) movements, they are not the most efficient sealing elements for long linear movements . Since O-rings come into contact with surfaces from a single point, they can perform rolling motion and twist in linear movements, and this not only causes leakage but also significantly shortens the life of the O-ring. For that reason, the X-cut sealing element (3) , which does not perform rolling motion in linear movement, is preferred.

The sealing element (3) is selected such that it comes into contact with both the flanged outer pipe (1) and the flanged inner pipe (1) from at least two points by being positioned inside a channel (6) that is created on the flanged inner pipe (2) between flanged inner pipe (2) and flanged outer pipe (1) . The sealing element (3) can be in the X-cut form or H- cut form based on the user's requirements. In the lateral sectional view of the inventive dismantling joint having a novel design illustrated in Figure 4, the X-cut rubber sealing element (3) , which is placed between two pipes (1) (2) , can be observed in detail.

After positioning the X-cut sealing element (3) between flanged outer pipe (1) and flanged inner pipe (2) , bolts (4) and nuts (5) are used for fastening the flanged outer pipe (1) and flanged inner pipe (2) to the pipeline. It can be seen that the prior dismantling joint shown in Figure 1 has more bolts and nuts in its closed position. In the inventive dismantling joints having a novel design, the mounting is carried out as shown in Figure 3 by only inserting the bolts (4) through the holes of the flanged inner pipe (2) and the flanged outer pipe (1) , and tightening by means of nuts (5) .