CN219299552U - Hydrogen circulation pump with hydrogen evacuation - Google Patents
Hydrogen circulation pump with hydrogen evacuation Download PDFInfo
- Publication number
- CN219299552U CN219299552U CN202222979781.6U CN202222979781U CN219299552U CN 219299552 U CN219299552 U CN 219299552U CN 202222979781 U CN202222979781 U CN 202222979781U CN 219299552 U CN219299552 U CN 219299552U
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- cavity
- rotor
- stator
- impeller
- hydrogen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model discloses a hydrogen circulation pump with hydrogen evacuation, comprising: the motor comprises a pump shell, wherein a rotor cavity, an impeller cavity and a stator cavity are arranged in the pump shell, the stator cavity surrounds the outer side of the rotor cavity, the stator cavity and the rotor cavity are sealed through a sealing structure, a motor stator is fixed in the stator cavity, a motor rotor is rotatably arranged in the rotor cavity through a bearing, the rotor cavity and the impeller cavity are communicated through a through hole, one end of the motor rotor penetrates through the through hole and stretches into the impeller cavity, an impeller is arranged in the impeller cavity, the impeller is fixedly sleeved on the end part of the motor rotor stretching into the impeller cavity, an air vent is formed in the outer side wall of the pump shell, and a waterproof air vent valve is arranged in the air vent. The hydrogen circulating pump can timely disperse hydrogen in the stator cavity into the atmosphere through the waterproof ventilation valve, so that the risk of fire and explosion in the stator cavity can be greatly reduced.
Description
Technical Field
The present utility model relates to hydrogen fuel cell systems, and in particular to a hydrogen circulation pump with hydrogen evacuation for use in hydrogen fuel cell systems.
Background
Hydrogen fuel cell systems that utilize electrochemical reaction of hydrogen gas with an oxidant to generate electricity are increasingly being used to provide electricity, particularly in the field of electric vehicles. During operation of the hydrogen fuel cell system, product water, unconsumed hydrogen and ineffective nitrogen may accumulate at the output of the anode side of the fuel cell stack. Unconsumed hydrogen is generally recycled by a hydrogen circulation pump to be reused, thereby improving the operation efficiency of the hydrogen fuel cell system.
The structure of the hydrogen circulation pump includes: the motor comprises a pump shell, wherein a rotor cavity, an impeller cavity and a stator cavity are arranged in the pump shell, the stator cavity surrounds the outer side of the rotor cavity, the stator cavity and the rotor cavity are sealed through a sealing structure, a motor stator is fixed in the stator cavity, a motor rotor is rotatably arranged in the rotor cavity through a bearing, a through hole is formed in a partition wall between the rotor cavity and the impeller cavity, an impeller is arranged in the impeller cavity, and one end of a shaft where the motor rotor is located penetrates through the through hole and stretches into the impeller cavity to be fixed with the impeller, so that the motor rotor can drive the impeller to rotate. The impeller can drive unconsumed hydrogen to flow and circulate after rotating.
The hydrogen in the impeller cavity can get into in the rotor cavity, and seal structure between rotor cavity and the stator cavity generally can't accomplish absolute seal, after a long time, the hydrogen in the rotor cavity still can reveal to the stator cavity in, and the motor stator in the stator cavity is electrified, gathers in the stator cavity and fires even explodes easily behind too much hydrogen.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: a hydrogen circulation pump with hydrogen evacuation that can evacuate the hydrogen in the stator cavity to the atmosphere will be provided.
In order to solve the problems, the utility model adopts the following technical scheme: a hydrogen circulation pump with hydrogen evacuation, comprising: the motor comprises a pump shell, a motor stator, a motor rotor and a motor rotor, wherein a rotor cavity, an impeller cavity and a stator cavity are arranged in the pump shell, the stator cavity surrounds the outer side of the rotor cavity, the stator cavity and the rotor cavity are sealed through a sealing structure, the motor stator is fixed in the stator cavity, the motor rotor is rotatably arranged in the rotor cavity through a bearing, a through hole is formed in a partition wall between the rotor cavity and the impeller cavity, an impeller is arranged in the impeller cavity, and one end of a shaft where the motor rotor is located penetrates through the through hole and stretches into the impeller cavity to be fixed with the impeller, so that the motor rotor can drive the impeller to rotate, and the motor rotor is characterized in that: the outer side wall of the pump shell is provided with an air vent which can enable the stator cavity to be communicated with the atmosphere, a waterproof air vent valve is arranged in the air vent, hydrogen leaked into the stator cavity from the rotor cavity can be discharged out of the stator cavity through the waterproof air vent valve, but water and dust in the atmosphere cannot enter the stator cavity through the air vent and the waterproof air vent valve.
Further, the aforementioned hydrogen circulation pump with hydrogen evacuation, wherein: the waterproof ventilation valve is connected with the ventilation holes through threads; or the waterproof ventilation valve is connected with the ventilation holes through buckles.
The utility model has the advantages that: the hydrogen circulating pump can timely disperse hydrogen in the stator cavity into the atmosphere through the waterproof ventilation valve, so that the risk of fire and explosion in the stator cavity can be greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of a hydrogen circulation pump with hydrogen evacuation according to the present utility model.
Detailed Description
The utility model is described in further detail below with reference to specific embodiments and the accompanying drawings.
As shown in fig. 1, a hydrogen circulation pump with hydrogen evacuation includes: the motor comprises a pump shell 1, wherein a rotor cavity 2, an impeller cavity 4 and a stator cavity 3 are arranged in the pump shell 1, the stator cavity 3 surrounds the outer side of the rotor cavity 2, the stator cavity 3 and the rotor cavity 2 are sealed through a sealing structure, a motor stator 5 is fixed in the stator cavity 3, a motor rotor 6 is rotatably arranged in the rotor cavity 2 through a bearing, a through hole 7 is formed in a partition wall between the rotor cavity 2 and the impeller cavity 4, an impeller 8 is arranged in the impeller cavity 4, one end of a shaft of the motor rotor 6 penetrates through the through hole 7 and extends into the impeller cavity 4 to be fixed with the impeller 8, so that the motor rotor 6 can drive the impeller 8 to rotate, a vent hole which can enable the stator cavity 3 to be communicated with the atmosphere is formed in the outer side wall of the pump shell 1, and a waterproof vent valve 9 is arranged in the vent hole. Hydrogen leaking from the rotor chamber 2 into the stator chamber 3 can be discharged out of the stator chamber 3 through the waterproof and breathable valve 9, but water and dust in the atmosphere cannot enter the stator chamber through the ventilation holes and the waterproof and breathable valve 9.
The waterproof ventilation valve is a relatively mature product in the market, the waterproof ventilation valve utilizes pressure difference to exhaust, a ventilation die body is arranged in the waterproof ventilation valve, the ventilation film body is of a microporous structure under the microcosmic state, the ventilation film body allows gas to freely enter and exit, but liquid and dust particles cannot pass through.
Claims (3)
1. A hydrogen circulation pump with hydrogen evacuation, comprising: the motor comprises a pump shell, a motor stator, a motor rotor and a motor rotor, wherein a rotor cavity, an impeller cavity and a stator cavity are arranged in the pump shell, the stator cavity surrounds the outer side of the rotor cavity, the stator cavity and the rotor cavity are sealed through a sealing structure, the motor stator is fixed in the stator cavity, the motor rotor is rotatably arranged in the rotor cavity through a bearing, a through hole is formed in a partition wall between the rotor cavity and the impeller cavity, an impeller is arranged in the impeller cavity, and one end of a shaft where the motor rotor is located penetrates through the through hole and stretches into the impeller cavity to be fixed with the impeller, so that the motor rotor can drive the impeller to rotate, and the motor rotor is characterized in that: the outer side wall of the pump shell is provided with an air vent which can enable the stator cavity to be communicated with the atmosphere, a waterproof air vent valve is arranged in the air vent, hydrogen leaked into the stator cavity from the rotor cavity can be discharged out of the stator cavity through the waterproof air vent valve, but water and dust in the atmosphere cannot enter the stator cavity through the air vent and the waterproof air vent valve.
2. The hydrogen circulation pump with hydrogen evacuation according to claim 1, wherein: the waterproof ventilation valve is connected with the ventilation holes through threads.
3. The hydrogen circulation pump with hydrogen evacuation according to claim 1, wherein: the waterproof ventilation valve is connected with the ventilation holes through buckles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222979781.6U CN219299552U (en) | 2022-11-09 | 2022-11-09 | Hydrogen circulation pump with hydrogen evacuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222979781.6U CN219299552U (en) | 2022-11-09 | 2022-11-09 | Hydrogen circulation pump with hydrogen evacuation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219299552U true CN219299552U (en) | 2023-07-04 |
Family
ID=86958042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222979781.6U Active CN219299552U (en) | 2022-11-09 | 2022-11-09 | Hydrogen circulation pump with hydrogen evacuation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219299552U (en) |
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2022
- 2022-11-09 CN CN202222979781.6U patent/CN219299552U/en active Active
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