CN114824363A - Hydrogen circulating pump integrated with ejector - Google Patents
Hydrogen circulating pump integrated with ejector Download PDFInfo
- Publication number
- CN114824363A CN114824363A CN202210449063.XA CN202210449063A CN114824363A CN 114824363 A CN114824363 A CN 114824363A CN 202210449063 A CN202210449063 A CN 202210449063A CN 114824363 A CN114824363 A CN 114824363A
- Authority
- CN
- China
- Prior art keywords
- ejector
- volute
- channel
- tangential exhaust
- integrated
- 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.)
- Granted
Links
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000001257 hydrogen Substances 0.000 title claims abstract description 57
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 57
- 239000007789 gas Substances 0.000 claims description 14
- 230000001154 acute effect Effects 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 3
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- 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
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- 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 fuel cell hydrogen supply system, in particular to a hydrogen circulating pump integrated with an ejector and used for the fuel cell hydrogen supply system. The hydrogen circulating pump integrated with the ejector is characterized by comprising a pump shell and a volute, wherein an impeller placing cavity used for containing 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 used for driving the impeller to rotate is arranged in the pump shell, the volute or the pump shell is fixed with the 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 invention has the advantages of less transmission loss of hydrogen pressure and greatly improved pressurizing 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 and used 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 with a hydrogen circulating pump and an ejector integrated 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, the air inlet 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 a hydrogen circulating pump integrated with an ejector, which has smaller pressure loss and can ensure the output pressure of hydrogen.
In order to achieve the purpose, the invention adopts the following technical scheme: the hydrogen circulating pump integrated with the ejector comprises a pump shell and a volute, wherein an impeller placing cavity used for containing 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 used for driving the impeller to rotate is arranged in the pump shell, the volute or the pump shell is fixed with the 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 hydrogen circulating pump and the ejector module are integrated and fixed together, so that the transmission distance of hydrogen led out from the hydrogen circulating pump and entering 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 air flow in the air supply channel and air flow at the tangential exhaust channel can be reduced, the influence of vortex can be avoided as far as possible, the transmission loss of hydrogen pressure is reduced, and the pressurization effect can be greatly improved. The invention adopts the centrifugal hydrogen circulating pump, and can further ensure the hydrogen pressurization effect. Wherein, spiral case or pump case and ejector module are fixed together, and overall structure stability is good, and the pipeline amplitude of rocking vibration is littleer, can further guarantee the pressure boost effect.
Preferably, the extending direction of the air supply channel and the extending direction of the air discharge channel form an acute angle. The transmission distance that enables the hydrogen that derives from the hydrogen circulating pump and gets into the ejector module is shorter and do not buckle, can further reduce hydrogen pressure transmission loss, can improve the pressure boost effect greatly.
Preferably, the acute angle is 0 ° to 45 °. With the above arrangement, transmission loss can be further reduced, enabling eddy currents to be further reduced.
Preferably, the air supply channel sequentially comprises a pressurization section, a mixing section and a diffusion section from the air inlet direction to the air outlet direction, and the tangential exhaust channel is communicated with the mixing section. After the pressure in the volute of the hydrogen circulating pump is increased, the gas directly enters the low-pressure area in the ejector module from the tangential exhaust passage and is then 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. Wherein, through setting up the pressure boost section, can compensate the pressure loss of mixing section department, ensure that final output hydrogen pressure size meets the requirements.
Preferably, the ejector module is provided with a nozzle, the inner cavity of the nozzle forms a pressurizing section, and the nozzle extends into the volute and enables the communication 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 feed channel is facilitated.
Preferably, the extension direction of the diffuser section is the same as the extension direction of the pressurizing section. The air supply channel is not bent, the eddy generated in the air supply process can be ensured to be smaller and less, and the hydrogen pressure loss at the output end of the ejector module can be ensured to be minimum.
Preferably, the volute is integrally formed with a nozzle guide portion, the nozzle guide portion is provided with a fitting groove communicated with the tangential exhaust passage, and the nozzle extends into the fitting groove and enables the end portion of the nozzle to be located in the tangential exhaust passage. The part of the ejector module for fixing the nozzle is 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. Through set up the proportional valve on the ejector module to the user is to the pressure and the flow control of the gaseous of deriving at the hydrogen source department, and can carry out certain pressure and supply, ensures the pressure of output hydrogen.
Preferably, the direction in which the air supply channel extends and the direction in which the tangential exhaust channel extends are on the same plane. The air supply channel and the tangential exhaust channel are located on the same plane, so that the collection of hydrogen at the position of the ejector module and 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 less transmission loss of hydrogen pressure and greatly improved pressurizing effect.
Drawings
FIG. 1 is a diagram illustrating a hydrogen circulation pump and a hydrogen fuel cell stack according to the present invention;
FIG. 2 is a schematic structural diagram 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 figures and the 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 placing 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 arranged along an axial direction of the impeller, the tangential exhaust passage 15 and the air intake passage 16 are both communicated with the impeller placing cavity 14, and a driving component for driving the impeller 13 to rotate is arranged in the pump housing 11.
The volute 12 is fixed with the ejector module 200, the ejector module 200 is provided with a gas supply channel 20, the gas supply channel 20 and the tangential exhaust channel 15 both extend along a linear direction, the distance between the gas supply channel 20 and the tangential exhaust channel 15 is gradually reduced from the gas inlet end to the gas outlet end until the gas supply channel 20 is communicated with the tangential exhaust channel 15, and an acute angle is formed between the extending direction of the gas supply channel 20 and the extending direction of the tangential exhaust channel 15. Wherein the acute angle is 10-40 deg. Wherein, the input end of the air feed channel 20 is provided with a proportional valve 210. The extending direction of the air supply channel 20 and the extending direction of the tangential exhaust channel 15 are in the same plane. The hydrogen circulation pump 100 of the present embodiment is fixed to a hydrogen fuel cell stack 300, and the hydrogen fuel cell stack 300 has a hydrogen inlet 301 communicating with the gas supply channel 20 and a hydrogen outlet 302 communicating with the gas inlet channel 16.
The air supply channel 20 of the present embodiment sequentially includes an air inlet section 201, a pressure boosting section 202, a mixing section 203, and a diffuser section 204 from an air inlet direction to an air outlet direction, and the tangential exhaust channel 15 is communicated with the mixing section 203. Wherein the diffuser section 204 extends in the same direction as the plenum section 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 a mixing section 203 is arranged at the position where the pressurizing section 202 is communicated with the tangential exhaust passage 15. A nozzle guide 121 is integrally formed on the volute 12, the nozzle guide 121 is provided with a fitting groove communicating with the tangential exhaust passage 15, and the nozzle 21 extends into the fitting groove so that the end of the nozzle 21 is positioned in the tangential exhaust passage 15.
The invention has the advantages of less transmission loss of hydrogen pressure and greatly improved pressurizing effect.
Claims (9)
1. The hydrogen circulating pump integrated with the ejector is characterized by comprising a pump shell and a volute, wherein an impeller placing cavity used for containing 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 used for driving the impeller to rotate is arranged in the pump shell, the volute or the pump shell is fixed with the 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.
2. The ejector-integrated hydrogen circulation pump according to claim 1, wherein the extending direction of the supply passage and the extending direction of the exhaust passage form an acute angle.
3. The eductor-integrated hydrogen circulation pump of claim 2, wherein the acute angle is in the range of 0 ° to 45 °.
4. The hydrogen circulation pump integrated with the ejector according to claim 1, wherein the gas supply channel comprises a pressurization section, a mixing section and a diffusion section in sequence from a gas inlet direction to a gas outlet direction, and the tangential exhaust channel is communicated with the mixing section.
5. The hydrogen circulation pump integrated with an ejector according to claim 4, wherein the ejector module is provided with a nozzle, the inner cavity of the nozzle forms a pressurizing section, and the nozzle extends into the volute and enables a mixing section to be arranged at the position where the pressurizing section is communicated with the tangential exhaust passage.
6. The ejector-integrated hydrogen circulation pump according to claim 4, wherein the extension direction of the diffuser section is the same as the extension direction of the pressurizing section.
7. The injector-integrated hydrogen circulation pump according to claim 5, wherein the volute is integrally formed with a nozzle guide portion provided with a fitting groove communicating with the tangential exhaust passage, and the nozzle extends into the fitting groove with a nozzle end portion positioned in the tangential exhaust passage.
8. The ejector-integrated hydrogen circulation pump according to claim 1 or 5, wherein the input end of the gas feed passage is provided with a proportional valve.
9. The ejector-integrated hydrogen circulation pump according to claim 1, wherein the direction of extension of the supply passage and the direction of extension of the tangential exhaust passage are on 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 true CN114824363A (en) | 2022-07-29 |
| CN114824363B CN114824363B (en) | 2024-04-30 |
Family
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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, pages: 154 * |
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| Publication number | Publication date |
|---|---|
| CN114824363B (en) | 2024-04-30 |
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| 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 |