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Matches 651 - 700 out of 3,479

Document Document Title
JP2009041500
To provide a pump device capable of being attached without changing installation piping and of carrying out variable speed operation control such as constant pressure control by a pump single body.The pump device having a pump part 10 pr...  
JP2009024935
To provide a system for controlling a circulating pump so that a temperature difference between an intake and a water discharge port does not exceed a pollution prevention agreement value in a cooling system utilizing seawater as cooling...  
JP2009011767
To solve the problem that a recently noticeable turbo pump is smaller and lighter in weight than a conventional pulsatile pump mainly used in an artificial heart pump, however, has a demerit that a blood flow is unstable, especially ther...  
JP2009006158
To provide a fire pump apparatus which allows a sure and effective action under disadvantageous conditions in a disaster.The fire pump apparatus has a motorized pump 10 to convey water with pressure, a main pipe 52 attached to the discha...  
JP2009007964
To provide a centrifugal pump capable of relaxing a thrust load generated by negative pressure on a suction port side and applied toward a suction port side of a pump case from an impeller, of extending life, and of being efficiently dri...  
JP2009008035
To provide a variable speed water supply device having a plurality of motor pumps driven at a variable speed, and performing stable additional operation with reduced pressure fluctuation.The variable speed water supply device comprises: ...  
JP2009008091
To provide a fire pump device surely and effectively operating under unfavorable condition when an accident occurs.This fire pump device includes: an electric pump 10 pressurizing and feeding water; one or a plurality of water discharge ...  
JP2009007959
To provide a centrifugal pump capable of relaxing a thrust load applied toward a suction port side of a pump case by a simple structure without arranging a balancing hole nor a rear blade on an impeller, and of extending the life of the ...  
JP2009002303
To provide a water supply system which uses a plurality of pumps driven by a variable speed driving means, which can prevent an inverter trip, and which can perform smooth parallel operation of a plurality of pumps without causing any dr...  
JP2009002162
To provide a drainage pump device capable of securing a predetermined drainage flow rate while avoiding an overloaded state of the drainage pump and operating at the original drainage flow rate of the drainage pump in the case where fore...  
JP2008309023
To provide a cavitation detecting method for appropriately detecting cavitation.The cavitation detecting method detects cavitation occurring in target equipment with fluid. The method includes a step for acquiring vibration data of the t...  
JP2008280921
To obtain a DC pump inspection device easily inspecting performance of a DC pump in an incorporated state in a product while observing constraint concerning drive of the pump.The pump inspection device comprises a control section 1 for d...  
JP2008274761
To provide a pump control device capable of controlling fluctuation of water-distribution pressure in re-starting a pump stopped during the water-distribution pressure control by a plurality of parallel pumps.The pump control device 1 ha...  
JP2008255911
To solve a problem in which a pump device frequently repeats a start and a stop even if a customer does not use water when water slightly leaks from the pump device to a delivery side pipe.The pump device is provided with a pressure sens...  
JP2008248851
To eliminate risk of sudden change of flow rate and unstable flow rate control.A fuel pressurizing pump is formed by connecting four small capacity pumps in parallel. When a second small capacity pump, a third small capacity pump, and fo...  
JP2008223589
To provide a hot water supply device, in which circuit breakage caused by increase in water temperature in a pump for the hot water supply device in increase in water temperature and increase in the temperature of a motor winding is prev...  
JP2008208807
To provide pump equipment in which foreign substances in a pump casing can be easily removed with the pump equipment fixed.The pump equipment is equipped with a motorized pump 13 which conveys sewage water 12 inside a manhole 11. A water...  
JP2008202555
To shirk the danger of suspension of water supply and the burst of piping due to the generation of pressure imbalance, when a water supply amount is abruptly increased/decreased, in a water supply device equipped with a controlling funct...  
JP2008202556
To improve system reliability by constructing an n-multiplex system autonomous distributed control system in a water supply device using a plurality of pumps driven by a plurality of variable speed driving means.Inverter main body 1-2 on...  
JP2008202553
To prevent unnecessary lock releasing control when an electric water pump is locked.The control device for the electric water pump comprises a lock releasing controlling means, and a restarting controlling means. The lock releasing contr...  
JP2008190401
To provide a reliable pump which can control a flow rate with a simple structure at a reasonable cost.By referring to a current value-exhaust flow rate relationship (4,000 rpm) 64 stored in a judgment reference storage means 6, an exhaus...  
JP2008186266
To provide the operation controller for a drainage pumping station which can optimally control the drainage from a tributary river to a main stream river, by appropriately controlling the operation of a sluice gate and a drainage pump du...  
JP2008180222
To provide a water supply equipment exhaust device for preventing the flow of bubbles into water supply equipment during less-water-amount operation of the water supply equipment without the need for changing the water supply equipment.T...  
JP2008180163
To carry out bubble biting determination at low cost by using an induction motor.By providing the induction motor 11 having a plurality of windings including a winding 31 with a phase advance capacitor 12 connected in series thereto, and...  
JP2008180162
To carry out bubble biting determination at low cost by using an induction motor.By arranging the induction motor 11, and an electric variable detection means 17 receiving a signal including harmonic components increased when bubble biti...  
JP2008151269
To provide a pressure container safety device having simple construction for releasing abnormally high pressure to the outside and easily restoring it even when the pressure in a pressure container becomes abnormally high.In a side wall ...  
JP2008128000
To provide a pump device capable of accurately detecting whether a liquid is present or not in a pump during a steady state operation.This pump device comprises the pump 10 having an impeller and a pump casing 10a, a drive source 15 for ...  
JP2008115822
To provide a pump operation control method of a water supply device capable of uniformizing the integral operation times of respective pumps while carrying out a rotation drive of numbered pumping machines.In the pump operation control m...  
JP2008101561
To provide a control device for a fluid pump, which can release a motor lock state.When the motor lock state is detected in starting of a fuel pump 11, an armature coil 21 is electrified in a first non-rotating pattern set in advance. Th...  
JP2008101556
To solve the problem of a conventional pump device, in which performance of the pump device is not sufficiently utilized because an operating condition of the pump device is determined in view of a worst installation condition.A control ...  
JP2008082318
To propose optimization of auxiliary circulation of fluid in a pump for improving the performance level of a balancing system and flow for cooling.Circuits for the auxiliary circulation of fluid in the pump for the axial balancing and th...  
JP2008082316
To provide a pump with an excellent axial balancing system capable of generating bigger axial lifting force.The pump (10) for sucking a fluid, comprises at least one centrifugal wheel (14) having a fluid inlet edge (48) and a fluid outle...  
JP2008075595
To easily and precisely measure a drainage volume of a precedence standby type vertical shaft pump including an air and water mixed operation condition.If a suction water lever TP measured by a water level sensor 11 is higher than an upp...  
JP2008076291
To easily and precisely measure a displacement of a precedence standby vertical shaft pump including a gas-water mixed operation.The displacement Q is calculated based on a suction water level TP measured by a water level sensor 11, a de...  
JP2008069652
To provide an automatic unit number control device and its method, for surely preventing simultaneous start, and easiness in setting time of a timer.This automatic unit number control device is composed of a level gauge 3 detecting a wat...  
JP2008063982
To secure a stable water quantity and pressure when operation is conducted while a plurality of pumps having different displacement are changed over, and establish such a condition as is free of the pump shutoff state so as to assure a s...  
JP2008063954
To provide an abnormality diagnostic method of a drainage pump and its device, without requiring much labor, by properly, easily and visually confirming a secular change in performance reduction and a changing tendency of a determining v...  
JP2008064064
To provide a pumping installation and the operating method thereof capable of appropriately controlling the quantity of flow of a pump for taking-in seawater through a dust collector provided in a sea area.This pumping installation 1 ins...  
JP2008057328
To provide a horizontal shaft pump in which the height of a rise part 42a formed on a suction pipe 42 is reduced to prevent water from flowing into a vacuum pump 52.The rise part 42a is formed on the suction pipe 42. A control means 64 s...  
JP2008055289
To provide an operation support system which can monitor occurrence of abnormality during operation of systems installed in a water supply and sewage plant.The operation support system 100 applied to the water supply and sewage plant has...  
JP2008057187
To control rain water discharge pumps and operate an inflow gate at proper timings by determining the state of flow-down/storage in a sewer while suppressing the construction cost of an overall system by eliminating the need of expensive...  
JP2008050984
To provide a pump equal speed control device for parallel operation of different capacity pumps reducing pushing in from a large pump to a small pump due to pump discharge variation in parallel operation of the different capacity pumps.T...  
JP2008038677
To provide a pump automatic alternating operation control system stabilizing alternating operation and also stabilizing stop near the target stop water level by using two submerged pumps operated and controlled by a single water level se...  
JP2008031906
To provide a controlled operation method for a vertical shaft pump 14 capable of executing controlled operation if water level A in a suction water tank 10 is over a lower end level B of a suction bellmouth 22.This invention relates to a...  
JP2008019724
To provide a safe, highly reliable, inexpensive, and economically excellent pump facility which stops a pump in a short period of time, without causing abnormality or excessive vibration in a pump by a high water head, while the pump fac...  
JP2008019731
To provide an easily installable automatically operable submerged pump which adjusts a preset water level, without moving an installation position of a water level detecting sensor.The water level detecting sensor for detecting a water l...  
JP2008014197
To provide a fluid transportation device capable of transporting fluid such as water from a lower part to an upper part.The fluid transportation device is provided with a fluid transportation pipe 11 having a fluid inlet 21 and a fluid o...  
JP2008014230
To provide a method and an apparatus for flow rate estimation of parallel pumps provided in a water supply system in order to estimate a total flow rate of a water supply system equipped with a plurality of variable-speed pumps which are...  
JP2008008204
To provide a control device for a drainage pumping station not dropping drain quantity to zero even if a failure occurs.The drainage pumping station is provided with a pump 10 and a drive machine 30 driving the pump 10, and is further pr...  
JP2008008196
To provide a centrifugal pump capable of finely adjusting pump characteristics of the centrifugal pump at low cost.The centrifugal pump 1 is provided with a case member 10 including a suction port 11 and a delivery port 12, an impeller 2...  

Matches 651 - 700 out of 3,479