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Hydrogen circulating pump

A circulating pump, hydrogen technology, applied in the direction of pumps, pump components, non-variable-capacity pumps, etc., can solve the problems of hydrogen booster impeller and insufficient stability of shafting at high speed, achieve good transmission torque and improve work performance , Improve the effect of assembly accuracy

Pending Publication Date: 2021-12-28
北京艾尔航空科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of high-speed centrifugal hydrogen pumps to fuel cell systems still has the problems of hydrogen booster impellers and insufficient stability of the shaft system at high speeds.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] see figure 1 and figure 2 , the present embodiment provides a hydrogen circulation pump, including a housing assembly 100 , a stator assembly 300 and a shafting assembly 200 disposed in the housing assembly 100 .

[0038] Wherein, the housing assembly 100 includes a pump housing body 110 and a motor housing 120, the pump housing body 110 is arranged at one end of the motor housing 120, the pump housing body 110 and the motor housing 120 are detachably connected, and A first seal 115 is provided at the joint between the pump casing body 110 and the motor casing 120 for sealing.

[0039] A pump cavity is formed between the pump housing body 110 and the motor housing 120 . The pump casing body 110 is provided with an inlet 110 a and an outlet (not shown in the figure), and the inlet 110 a and the outlet are respectively provided with corresponding inlet adapters 112 and outlet adapters 113 .

[0040]Further, the pump casing body 110 is correspondingly processed with a ...

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Abstract

The invention provides a hydrogen circulating pump, and relates to the technical field of pumps. The hydrogen circulating pump comprises a shell assembly and a shafting assembly arranged in the shell assembly, the shafting assembly comprises an impeller and a rotor shaft, the impeller is provided with an assembly hole along the center line, multiple rotation stopping rotary grooves are formed in the circumferential direction of the assembly hole, rotation stopping rotary teeth corresponding to the rotation stopping rotary grooves are arranged on the outer circumferential face of the rotor shaft, and when the rotor shaft cooperates with the assembly hole, the rotation stopping rotary teeth cooperate with the corresponding rotation stopping rotary grooves, so that the rotor shaft and the impeller rotate synchronously. According to the hydrogen circulating pump, the rotation stopping rotary teeth cooperate with the corresponding rotation stopping rotary grooves, so that the assembly precision of the rotor shaft and the impeller is improved, meanwhile, the hydrogen circulating pump has better torque transmission capability, so that when the rotor shaft drives the impeller to rotate at a high speed, accurate positioning of high-speed rotation is realized, meanwhile, the operation stability is ensured, and then the working performance of the hydrogen circulating pump is improved.

Description

technical field [0001] The invention relates to the technical field of pumps, in particular to a hydrogen circulation pump. Background technique [0002] The hydrogen circulation pump is an important functional component in the fuel cell system. Its function is to pressurize and recirculate the mixed gas of hydrogen, nitrogen and saturated water vapor that has not been fully reacted in the fuel cell stack, so as to save hydrogen fuel and improve the power generation efficiency of the entire stack. [0003] At present, the existing fuel cell hydrogen pressurization system is mainly based on the rotary positive displacement circulating pump represented by low speed + traditional mechanical seal structure, such as scroll type, claw type, Roots type, etc. These types of pumps generally have large volume and weight, running noise, and power consumption cannot meet the requirements of use. [0004] The high-speed centrifugal circulating pump has obvious advantages in this respec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/05F04D29/60
CPCF04D29/05F04D29/601
Inventor 王凤芹肖海胡风波滕莉莉丁海洋
Owner 北京艾尔航空科技有限责任公司
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