CN114824363B - Hydrogen circulating pump integrated with ejector - Google Patents
Hydrogen circulating pump integrated with ejector Download PDFInfo
- Publication number
- CN114824363B CN114824363B CN202210449063.XA CN202210449063A CN114824363B CN 114824363 B CN114824363 B CN 114824363B CN 202210449063 A CN202210449063 A CN 202210449063A CN 114824363 B CN114824363 B CN 114824363B
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- CN
- China
- Prior art keywords
- ejector
- hydrogen
- air supply
- air
- nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000001257 hydrogen Substances 0.000 title claims abstract description 56
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 56
- 230000001154 acute effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 239000000446 fuel Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007789 gas Substances 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04097—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with recycling of the reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to a hydrogen supply system of a fuel cell, in particular to a hydrogen circulating pump integrated with an ejector for the hydrogen supply system of the fuel cell. The utility model provides an integrated hydrogen circulating pump who has ejector, its characterized in that includes pump case and spiral case, be formed with in the spiral case and be used for holding the impeller and place the chamber, the spiral case still be equipped with the impeller place the chamber intercommunication tangential exhaust passage, be equipped with in the pump case be used for the drive impeller rotatory drive part, spiral case or pump case are fixed with the ejector module, the ejector module is equipped with the passageway of sending gas, the distance between passageway of sending gas and tangential exhaust passage is from the inlet end to the outlet end dwindle gradually until the passageway of sending gas communicates with tangential exhaust passage. The invention has the advantages of smaller hydrogen pressure transmission loss and greatly improved supercharging effect.
Description
Technical Field
The invention relates to a hydrogen supply system of a fuel cell, in particular to a hydrogen circulating pump integrated with an ejector for the hydrogen supply system of the fuel cell.
Background
In order to solve the problems of large volume, large occupied space, long transmission distance and the like, the Chinese patent application No. 202110276489.5 discloses a fuel cell hydrogen supply system which is formed by connecting a hydrogen circulating pump and an ejector in series, wherein an air outlet channel of the hydrogen circulating pump is directly communicated with a low-pressure area of the ejector, the air outlet channel of the hydrogen circulating pump forms a vertical included angle, an air supply channel of the ejector is vertical to the tail end of the air outlet channel, and the pressure loss is large.
Disclosure of Invention
The invention aims to provide the hydrogen circulating pump integrated with the ejector, which has smaller pressure loss and can ensure the output pressure of hydrogen.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides an integrated hydrogen circulating pump who has ejector, includes pump case and spiral case, be formed with in the spiral case and be used for holding the impeller and place the chamber, the spiral case still be equipped with the impeller place the chamber intercommunication tangential exhaust passage, be equipped with in the pump case be used for the drive impeller rotatory drive part, spiral case or pump case are fixed with the ejector module, the ejector module is equipped with the passageway of sending gas, the distance between passageway of sending gas and the tangential exhaust passage is reduced gradually from the inlet end to the outlet end until the passageway of sending gas and tangential exhaust passage intercommunication.
The hydrogen circulating pump and the ejector module are integrally fixed together, so that the transmission distance of the hydrogen led out from the hydrogen circulating pump into the ejector module is shortened, and the transmission loss is reduced; the distance between the air supply channel and the tangential exhaust channel is gradually reduced from the air inlet end to the air outlet end until the air supply channel is communicated with the tangential exhaust channel, namely, the air supply channel is not perpendicular to the tangential exhaust channel, so that the collision loss of the air flow in the air supply channel and the air flow at the tangential exhaust channel can be reduced, the air flow is not influenced by vortex as much as possible, the transmission loss of the hydrogen pressure is smaller, and the supercharging effect can be greatly improved. The invention adopts the centrifugal hydrogen circulating pump, and can further ensure the hydrogen supercharging effect. The volute or the pump shell is fixed with the ejector module, the stability of the whole structure is good, the vibration amplitude of the pipeline is smaller, and the supercharging effect can be further ensured.
Preferably, the extending direction of the air supply passage and the extending direction of the air discharge passage form an acute angle. The transmission distance of the hydrogen led out from the hydrogen circulating pump into the ejector module is shorter and the hydrogen is not bent, so that the transmission loss of the hydrogen pressure can be further reduced, and the supercharging effect can be greatly improved.
Preferably, the acute angle is 0 ° to 45 °. By the arrangement, the transmission loss is further reduced, and the eddy current can be further reduced.
Preferably, the air supply channel sequentially comprises a pressurizing section, a mixing section and a diffusing section from the air inlet direction to the air outlet direction, and the tangential air exhaust channel is communicated with the mixing section. After the pressure in the spiral case of the hydrogen circulating pump is increased, the hydrogen enters the low-pressure area in the ejector module directly from the tangential exhaust channel, and is led out through the mixing section and the diffusion section, so that the combined pressure increase of the hydrogen circulating pump and the ejector module is realized. The pressure loss at the mixing section can be compensated by arranging the pressurizing section, so that the final output hydrogen pressure is ensured to meet the requirement.
Preferably, the ejector module is provided with a nozzle, the inner cavity of the nozzle forms a pressurizing section, and the nozzle stretches into the volute and enables the communicating part of the pressurizing section and the tangential exhaust passage to be a mixing section. The pressurizing section is arranged at the nozzle, and the nozzle extends into the volute and is fixed with the volute, so that the assembly of the air supply channel is facilitated.
Preferably, the extension direction of the diffuser section is the same as the extension direction of the booster section. The air supply channel is not bent, so that less vortex generated in the air supply process can be ensured, and the hydrogen pressure loss at the output end of the ejector module can be ensured to be extremely small.
Preferably, the volute is integrally provided with a nozzle guide part, the nozzle guide part is provided with a matching groove communicated with the tangential exhaust passage, and the nozzle extends into the matching groove and enables the end part of the nozzle to be positioned in the tangential exhaust passage. The parts of the ejector module for fixing the nozzle are integrally formed with the volute, so that the assembly of the hydrogen circulating pump is facilitated.
Preferably, the input end of the air supply channel is provided with a proportional valve. The proportional valve is arranged on the ejector module, so that a user can conveniently control the pressure and flow of the gas led out from the hydrogen source, and can supplement certain pressure to ensure the pressure of the output hydrogen.
Preferably, the extension direction of the air supply passage and the extension direction of the tangential air discharge passage are located on the same plane. The air supply channel and the tangential exhaust channel are positioned on the same plane, so that the collection of the hydrogen at the ejector module and the hydrogen at the output end of the hydrogen circulating pump can be better realized, the influence of vortex can be further avoided, and the pressure loss is further reduced.
The invention has the advantages of smaller hydrogen pressure transmission loss and greatly improved supercharging effect.
Drawings
FIG. 1 is a diagram of a hydrogen circulation pump and hydrogen fuel cell stack according to the present invention in use;
FIG. 2 is a schematic diagram of a structure of the present invention;
Fig. 3 is a cross-sectional view of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and specific embodiments.
As shown in fig. 1 to 3, the hydrogen circulation pump 100 of the present embodiment is a magnetic suspension hydrogen circulation pump, the hydrogen circulation pump 100 includes a pump housing 11 and a volute 12, an impeller placement cavity 14 for accommodating an impeller 13 is formed in the volute 12, the volute 12 is provided with a tangential exhaust passage 15 and an air intake passage 16 axially arranged along the impeller, the tangential exhaust passage 15 and the air intake passage 16 are both communicated with the impeller placement cavity 14, and a driving component for driving the impeller 13 to rotate is provided in the pump housing 11.
The spiral case 12 is fixed with the ejector module 200, the ejector module 200 is provided with an air supply channel 20, the air supply channel 20 and the tangential exhaust channel 15 extend along the straight line direction, the distance between the air supply channel 20 and the tangential exhaust channel 15 is gradually reduced from an air inlet end to an air outlet end until the air supply channel 20 is communicated with the tangential exhaust channel 15, and the extending direction of the air supply channel 20 and the extending direction of the tangential exhaust channel 15 form an acute angle. Wherein the acute angle is 10 DEG to 40 deg. Wherein the input end of the air supply passage 20 is provided with a proportional valve 210. Wherein the extension direction of the air supply passage 20 is in the same plane as the extension direction of the tangential air discharge passage 15. The hydrogen circulation pump 100 of the present embodiment is fixed to the hydrogen fuel cell stack 300, and the hydrogen fuel cell stack 300 has a hydrogen inlet 301 communicating with the air supply passage 20 and a hydrogen outlet 302 communicating with the air intake passage 16.
The air supply channel 20 of the present embodiment includes an air intake section 201, a supercharging section 202, a mixing section 203, and a diffusing section 204 in order from the air intake direction to the air outlet direction, and the tangential air exhaust channel 15 communicates with the mixing section 203. Wherein the extending direction of the diffuser 204 is the same as the extending direction of the booster 202.
The ejector module 200 is provided with a nozzle 21, the inner cavity of the nozzle 21 forms a pressurizing section, and the nozzle 21 extends into the volute 11 and enables a mixing section 203 to be arranged at the position where the pressurizing section 202 is communicated with the tangential exhaust passage 15. The volute 12 is integrally formed with a nozzle guide 121, the nozzle guide 121 is provided with a mating groove in communication with the tangential exhaust passage 15, and the nozzle 21 extends into the mating groove and positions the end of the nozzle 21 within the tangential exhaust passage 15.
The invention has the advantages of smaller hydrogen pressure transmission loss and greatly improved supercharging effect.
Claims (6)
1. The hydrogen circulating pump integrated with the ejector is characterized by comprising a pump shell and a volute, wherein an impeller placing cavity for accommodating an impeller is formed in the volute, the volute is further provided with a tangential exhaust channel communicated with the impeller placing cavity, a driving part for driving the impeller to rotate is arranged in the pump shell, the volute or the pump shell is fixed with an ejector module, the ejector module is provided with an air supply channel, and the distance between the air supply channel and the tangential exhaust channel is gradually reduced from an air inlet end to an air outlet end until the air supply channel is communicated with the tangential exhaust channel; the air supply channel sequentially comprises a pressurizing section, a mixing section and a diffusing section from the air inlet direction to the air outlet direction, and the tangential exhaust channel is communicated with the mixing section; the ejector module is provided with a nozzle, the inner cavity of the nozzle forms a pressurizing section, and the nozzle stretches into the volute and enables the communicating part of the pressurizing section and the tangential exhaust channel to be a mixing section; the spiral case is gone up integrated into one piece has nozzle guide part, nozzle guide part is equipped with the cooperation groove with tangential exhaust passage intercommunication, the nozzle stretches into the cooperation groove and makes the nozzle tip be located tangential exhaust passage.
2. The ejector-integrated hydrogen circulation pump of claim 1, wherein the direction of extension of the air supply passage and the direction of extension of the air discharge passage form an acute angle.
3. The eductor-integrated hydrogen circulation pump of claim 2, wherein the acute angle is 0 ° to 45 °.
4. The ejector-integrated hydrogen circulation pump of claim 1, wherein the diffuser section extends in the same direction as the booster section.
5. The ejector-integrated hydrogen circulation pump of claim 1, wherein the input end of the air supply passage is provided with a proportional valve.
6. The ejector-integrated hydrogen circulation pump of claim 1, wherein the direction of extension of the air feed passage and the direction of extension of the tangential air discharge passage are in the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210449063.XA CN114824363B (en) | 2022-04-27 | 2022-04-27 | Hydrogen circulating pump integrated with ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210449063.XA CN114824363B (en) | 2022-04-27 | 2022-04-27 | Hydrogen circulating pump integrated with ejector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114824363A CN114824363A (en) | 2022-07-29 |
| CN114824363B true CN114824363B (en) | 2024-04-30 |
Family
ID=82507632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210449063.XA Active CN114824363B (en) | 2022-04-27 | 2022-04-27 | Hydrogen circulating pump integrated with ejector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114824363B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6101812A (en) * | 1996-07-26 | 2000-08-15 | Daimlerchrysler Ag | Motor brake arrangement for a turbocharged engine |
| CN112864419A (en) * | 2021-03-15 | 2021-05-28 | 烟台东德实业有限公司 | Hydrogen circulating pump and ejector series integrated fuel cell hydrogen supply system |
| CN113675437A (en) * | 2021-09-13 | 2021-11-19 | 上海澄朴科技有限公司 | End cover ejector of hydrogen circulating pump and fuel cell system |
| CN216044603U (en) * | 2021-09-06 | 2022-03-15 | 北京昆腾迈格技术有限公司 | Impeller and hydrogen circulating pump |
| CN217468505U (en) * | 2022-04-27 | 2022-09-20 | 杭州氢磁机电科技有限公司 | Hydrogen circulating pump |
-
2022
- 2022-04-27 CN CN202210449063.XA patent/CN114824363B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6101812A (en) * | 1996-07-26 | 2000-08-15 | Daimlerchrysler Ag | Motor brake arrangement for a turbocharged engine |
| CN112864419A (en) * | 2021-03-15 | 2021-05-28 | 烟台东德实业有限公司 | Hydrogen circulating pump and ejector series integrated fuel cell hydrogen supply system |
| CN216044603U (en) * | 2021-09-06 | 2022-03-15 | 北京昆腾迈格技术有限公司 | Impeller and hydrogen circulating pump |
| CN113675437A (en) * | 2021-09-13 | 2021-11-19 | 上海澄朴科技有限公司 | End cover ejector of hydrogen circulating pump and fuel cell system |
| CN217468505U (en) * | 2022-04-27 | 2022-09-20 | 杭州氢磁机电科技有限公司 | Hydrogen circulating pump |
Non-Patent Citations (1)
| Title |
|---|
| 赵志立.《叶轮式流体设备 泵、风机与压缩机设计与运行》.重庆大学出版社,1997,154. * |
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| Publication number | Publication date |
|---|---|
| CN114824363A (en) | 2022-07-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220805 Address after: 1st Floor, Building 8, No. 161, No. 17 Street, Baiyang Street, Qiantang District, Hangzhou City, Zhejiang Province, 310018 Applicant after: Hangzhou Hydrogen Magnetic Electromechanical Technology Co., Ltd. Address before: No. 410, 4th floor, shining building, No. 35 Xueyuan Road, Haidian District, Beijing 100083 Applicant before: Beijing Kuntengmig Technology Co.,Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |