CN115425256B - Integrated bypass injection type Roots hydrogen circulating pump - Google Patents
Integrated bypass injection type Roots hydrogen circulating pump Download PDFInfo
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- CN115425256B CN115425256B CN202211089076.7A CN202211089076A CN115425256B CN 115425256 B CN115425256 B CN 115425256B CN 202211089076 A CN202211089076 A CN 202211089076A CN 115425256 B CN115425256 B CN 115425256B
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- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 103
- 239000001257 hydrogen Substances 0.000 title claims abstract description 103
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 238000002347 injection Methods 0.000 title claims abstract description 8
- 239000007924 injection Substances 0.000 title claims abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 33
- 238000009792 diffusion process Methods 0.000 claims abstract description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 239000000446 fuel Substances 0.000 abstract description 12
- 238000009434 installation Methods 0.000 abstract description 4
- 238000004806 packaging method and process Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 10
- 230000010354 integration Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
-
- 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
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04104—Regulation of differential pressures
-
- 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
-
- 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)
- Jet Pumps And Other Pumps (AREA)
- Fuel Cell (AREA)
Abstract
The integrated bypass injection type Roots hydrogen circulating pump comprises a hydrogen circulating pump, wherein a pressurizing cavity shell of the hydrogen circulating pump is connected with an integrated cover plate, the integrated cover plate comprises an integrated shell, a hydrogen pump cover plate is arranged on the rear side of the integrated shell, an injector is arranged on the front side of the integrated shell, the injector comprises a low-pressure suction cavity which is arranged in the integrated shell and communicated with a first communication cavity, a high-pressure nozzle is arranged in the low-pressure suction cavity, a mixing cavity and a diffusion cavity are arranged on the rear side of the low-pressure suction cavity, and the diffusion cavity is communicated with a second communication cavity; the left side of the integrated cover plate is connected with a valve integrated device, and the valve integrated device is provided with a switching valve and a proportional valve. The integrated level is high, occupation space is little, and transmission distance is near, has reduced the loss in the transmission process, has improved transmission efficiency, and the check valve can avoid gaseous countercurrent to guarantee fuel cell hydrogen supply subsystem's normal operating, packaging efficiency is high, has realized the modularization installation, has improved the commonality of product.
Description
Technical field:
the invention relates to an integrated bypass injection type Roots hydrogen circulating pump.
The background technology is as follows:
at present, the development of new energy fuel cell automobiles is considered as an important link of traffic energy power transformation, and in order to ensure the normal operation of fuel cell engines, the fuel cell engines generally need auxiliary systems such as a hydrogen supply subsystem, an air supply subsystem, a circulating water cooling management subsystem and the like.
In a fuel cell hydrogen supply subsystem, a hydrogen circulating pump and an ejector can be mutually matched to realize the pressurization of hydrogen, at present, the hydrogen circulating pump and the ejector are generally connected through pipelines, the integration degree is low, the occupied space is large, the transmission distance is long, the loss can be generated in the transmission process, the transmission efficiency is reduced, although some theoretical concepts of integrating the hydrogen circulating pump and the ejector also appear in recent years, no specific structural design exists, and particularly, for a large-displacement hydrogen supply subsystem, the strict requirements are met on an air inlet pipeline, an air outlet pipeline and a communication pipeline between the hydrogen circulating pump and the ejector, and if the design is unreasonable, the air inlet and outlet quantity is unbalanced, so that the stable operation of the hydrogen supply subsystem is influenced; in addition, when the hydrogen circulating pump is communicated with the ejector, the problem of short circuit formed by countercurrent gas is easy to occur, and the normal operation of the hydrogen supply subsystem of the fuel cell is influenced.
The ejector is used for being connected with the hydrogen source, pressurizes hydrogen, and the hydrogen source import front side of ejector generally is equipped with proportional valve and ooff valve for adjust the break-make of admitting air and the pressure of admitting air, at present ooff valve, proportional valve all are the components of a whole that can function independently setting, connect through the pipeline, and the pipeline connection is complicated, and integrated level is low, and occupation space is big, and on-the-spot packaging efficiency is low, has restricted the development of hydrogen supply subsystem.
In view of the foregoing, the problem of integration of the hydrogen circulation pump has become a technical problem to be solved in the industry.
The invention comprises the following steps:
the invention provides an integrated bypass injection type Roots hydrogen circulating pump for overcoming the defects of the prior art, solves the problems of low integration degree and large occupied space of the traditional hydrogen circulating pump and an injector, solves the problem that the traditional hydrogen circulating pump is easy to generate gas countercurrent when being communicated with the injector, and solves the problems of low integration degree and low assembly efficiency of the traditional switching valve and the proportional valve.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides an integrated bypass injection formula roots hydrogen circulating pump, includes the hydrogen circulating pump, the booster chamber casing of hydrogen circulating pump is connected with integrated apron, integrated apron includes integrated casing, integrated casing rear side is equipped with the hydrogen pump apron, and the front side is equipped with the ejector, and the left side surface is equipped with first intercommunication chamber, and the right side surface is equipped with the second intercommunication chamber, be equipped with the air inlet and the gas vent that are linked together with the booster chamber of hydrogen circulating pump on the hydrogen pump apron, the air inlet is linked together with the hydrogen pump inlet channel that establishes in integrated casing to ejector direction extension, one side of hydrogen pump inlet channel is linked together with the ejector inlet channel that establishes in integrated casing to the extension of first intercommunication chamber, the gas vent is linked together with the hydrogen pump exhaust channel that establishes in integrated casing to the extension of second intercommunication chamber, be equipped with the check valve in ejector inlet channel and the hydrogen pump exhaust channel respectively;
the ejector comprises a low-pressure suction cavity which is arranged in the integrated shell and communicated with the first communication cavity, a high-pressure nozzle is arranged in the low-pressure suction cavity, a mixing cavity and a diffusion cavity are arranged at the rear side of the low-pressure suction cavity, and the diffusion cavity is communicated with the second communication cavity;
the left side of the integrated cover plate is connected with a valve integrated device, and the valve integrated device is provided with a switching valve and a proportional valve.
The air inlet channel of the hydrogen pump is a straight channel, and the air inlet channel of the ejector and the air outlet channel of the hydrogen pump are smooth transition bends.
The diameters of the air inlet channel of the ejector and the air outlet channel of the hydrogen pump are slightly smaller than the diameter of the air inlet channel of the hydrogen pump.
The check valve is arranged at the positions close to the outlet of the air inlet channel of the ejector and the exhaust channel of the hydrogen pump.
The valve integrated device comprises an integrated seat body, a switching valve and a through proportional valve are arranged on the integrated seat body, a switching valve air inlet channel communicated with the inlet direction of the switching valve is arranged in the integrated seat body, a proportional valve air inlet channel communicated with the outlet direction of the switching valve is arranged in the integrated seat body, the proportional valve air inlet channel is communicated with the inlet direction of the through proportional valve, a through proportional valve air outlet channel communicated with the outlet direction of the through proportional valve is also arranged in the integrated seat body, and the through proportional valve air outlet channel is communicated with a high-pressure nozzle of the ejector.
The integrated seat body is also provided with a bypass proportional valve, the inlet direction of the bypass proportional valve is communicated with the air inlet channel of the proportional valve, and the integrated seat body is also internally provided with a bypass proportional valve air outlet channel communicated with the outlet direction of the bypass proportional valve.
The bypass proportional valve exhaust passage leads to in the left intercommunication groove of integrated pedestal, the intercommunication groove outside is shutoff through installing the apron on the integrated pedestal, and the intercommunication groove other end is linked together with the first bypass passageway of establishing in the integrated pedestal, and the other end of first bypass passageway extends to the right-hand member lateral part of integrated pedestal and is linked together with the second bypass passageway of establishing in the integrated housing, and the other end of second bypass passageway extends to the second intercommunication chamber.
And the outer end of the air inlet channel of the switch valve is connected with an air inlet joint.
And a plurality of mounting support seats are respectively arranged on the integrated shell and the hydrogen circulation pump shell.
The integrated shell and the integrated seat body are respectively made of metal materials or nonmetal materials in an integrated mode.
The invention adopts the scheme and has the following advantages:
through setting up integrated casing, carry out structural design to integrated casing, with ejector, hydrogen pump air inlet channel, ejector air inlet channel and hydrogen pump exhaust passage all integrate in integrated casing, the integrated level is high, occupation space is little, transmission distance is near, reduced the loss in the transmission process, improved transmission efficiency, hydrogen supply subsystem advances the displacement balance, guaranteed the steady work of hydrogen supply subsystem, set up the check valve in ejector air inlet channel and the hydrogen pump exhaust passage, can avoid gaseous countercurrent to guarantee the normal operating of fuel cell hydrogen supply subsystem.
Through setting up integrated pedestal, with the ooff valve, direct proportional valve, bypass proportional valve is integrated in an organic whole, and set up ooff valve air inlet channel in integrated pedestal and be used for admitting air, set up proportional valve air inlet channel and be used for being linked together the ooff valve with direct proportional valve respectively, bypass proportional valve, set up direct proportional valve exhaust passage and bypass proportional valve exhaust passage, the intercommunication groove, bypass passage is used for exhausting, the make-and-break of fuel cell hydrogen supply subsystem air inlet and the pressure of admitting air have not only been realized adjusting, moreover integrated level is high, occupation space is little, gas transmission distance is short, energy loss in the transmission process has been reduced, boost efficiency has been promoted, and packaging efficiency is high, modular installation has been realized, the commonality of product has been improved.
Description of the drawings:
fig. 1 is a schematic view of a left-hand perspective structure of the present invention.
Fig. 2 is a right-side perspective view of the present invention.
Fig. 3 is a schematic top view of the present invention.
Fig. 4 is a schematic view of the cross-sectional structure A-A in fig. 3.
Fig. 5 is a schematic view of the cross-sectional structure of B-B in fig. 3.
FIG. 6 is a schematic view of the C-C cross-sectional structure of FIG. 3.
Fig. 7 is a schematic view of the D-D cross-sectional structure of fig. 3.
FIG. 8 is a schematic view of the E-E cross-sectional structure of FIG. 3.
FIG. 9 is a schematic cross-sectional F-F structure of FIG. 3.
Fig. 10 is a schematic left-view perspective structure of the integrated seat body of the present invention.
Fig. 11 is a right-side perspective view of the integrated seat of the present invention.
Fig. 12 is a schematic front perspective view of the integrated housing of the present invention.
Fig. 13 is a schematic rear perspective view of the integrated housing of the present invention.
Fig. 14 is a schematic left-hand perspective view of the integrated housing of the present invention.
In the figure, 1, an integrated housing, 2, a hydrogen pump cover plate, 3, an ejector, 4, a first communication cavity, 5, a second communication cavity, 6, an air inlet, 7, an air outlet, 8, a hydrogen pump air inlet channel, 9, an ejector air inlet channel, 10, a hydrogen pump air outlet channel, 11, a one-way valve, 12, a low-pressure suction cavity, 13, a high-pressure nozzle, 14, a mixing cavity, 15, a diffusion cavity, 16, a hydrogen circulation pump, 17, an integrated seat, 18, a switching valve, 19, a straight-through proportional valve, 20, a switching valve air inlet channel, 21, a proportional valve air inlet channel, 22, a straight-through proportional valve air outlet channel, 23, a bypass proportional valve, 24, a bypass proportional valve air outlet channel, 25, a communication groove, 26, a cover plate, 27, a first bypass channel, 28, a second bypass channel, 29, an air inlet joint, 30 and an installation support seat.
The specific embodiment is as follows:
in order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings.
As shown in fig. 1-7, an integrated bypass injection type roots hydrogen circulating pump comprises a hydrogen circulating pump 16, wherein a booster cavity shell of the hydrogen circulating pump 16 is connected with an integrated cover plate, the integrated cover plate comprises an integrated shell 1, a hydrogen pump cover plate 2 is arranged at the rear side of the integrated shell 1, an injector 3 is arranged at the front side of the integrated shell, a first communication cavity 4 is arranged on the left side surface, a second communication cavity 5 is arranged on the right side surface, an air inlet 6 and an air outlet 7 which are communicated with the booster cavity of the hydrogen circulating pump are arranged on the hydrogen pump cover plate 2, the air inlet 6 is communicated with a hydrogen pump air inlet channel 8 which is arranged in the integrated shell 1 and extends towards the injector 3, one side of the hydrogen pump air inlet channel 8 is communicated with an injector air inlet channel 9 which is arranged in the integrated shell 1 and extends towards the first communication cavity 4, the air outlet 7 is communicated with a hydrogen pump air outlet channel 10 which is arranged in the integrated shell 1 and extends towards the second communication cavity 5, and a one-way valve 11 is respectively arranged in the injector air inlet channel 9 and the hydrogen pump air outlet channel 10;
the ejector 3 comprises a low-pressure suction cavity 12 which is arranged in the integrated shell 1 and communicated with the first communication cavity 4, a high-pressure nozzle 13 is arranged in the low-pressure suction cavity 12, a mixing cavity 14 and a diffusion cavity 15 are arranged at the rear side of the low-pressure suction cavity 12, and the diffusion cavity 15 is communicated with the second communication cavity 5;
the left side of the integrated cover plate 2 is connected with a valve integrated device, and the valve integrated device is provided with a switching valve and a proportional valve.
The hydrogen pump air inlet channel 8 is a straight channel, so that gas can enter, the ejector air inlet channel 9 and the hydrogen pump air outlet channel 10 are smooth transition bends, the internal space of the integrated shell 1 can be fully utilized, the flow resistance is small, the gas conduction is facilitated, and the transmission efficiency is improved.
The diameters of the air inlet channel 9 of the ejector and the air outlet channel 10 of the hydrogen pump are slightly smaller than the diameter of the air inlet channel 8 of the hydrogen pump, so that the air inlet and outlet quantity balance can be ensured.
The check valve 11 is arranged at the positions close to the outlet of the air inlet channel 9 of the ejector and the exhaust channel 10 of the hydrogen pump, so that the installation and the disassembly are convenient.
The valve integrated device comprises an integrated seat body 17, a switch valve 18 and a direct-connection proportional valve 19 are arranged on the integrated seat body 17, a switch valve air inlet channel 20 communicated with the inlet direction of the switch valve 18 is arranged in the integrated seat body 17, a proportional valve air inlet channel 21 communicated with the outlet direction of the switch valve 18 is arranged in the integrated seat body 17, the proportional valve air inlet channel 21 is communicated with the inlet direction of the direct-connection proportional valve 19, a direct-connection proportional valve air outlet channel 22 communicated with the outlet direction of the direct-connection proportional valve 19 is also arranged in the integrated seat body 17, and the direct-connection proportional valve air outlet channel 22 is communicated with the high-pressure nozzle 13 of the ejector 3.
The integrated seat 17 is also provided with a bypass proportional valve 23, the bypass proportional valve 23 is opened under peak working conditions, the inlet direction of the bypass proportional valve 23 is communicated with the proportional valve air inlet channel 21, and the integrated seat 17 is also internally provided with a bypass proportional valve air outlet channel 24 communicated with the outlet direction of the bypass proportional valve 23.
The bypass proportional valve exhaust passage 24 leads to the inside of a communication groove 25 on the left side of the integrated seat body 17, the outside of the communication groove 25 is plugged by a cover plate 26 arranged on the integrated seat body 17, the other end of the communication groove 25 is communicated with a first bypass passage 27 arranged in the integrated seat body 17, the other end of the first bypass passage 27 extends to the right side part of the integrated seat body 17 and is communicated with a second bypass passage 28 arranged in the integrated housing 1, and the other end of the second bypass passage 28 extends to the second communication cavity 5.
The outer end of the switch valve air inlet channel 20 is connected with an air inlet joint 29, which is convenient to be connected with a hydrogen source.
The integrated shell 1 and the hydrogen circulating pump 16 are respectively provided with a plurality of mounting support seats 30, and are used for supporting during mounting.
The integrated housing 1 and the integrated seat 17 are respectively made of metal or nonmetal materials by integral molding.
Working principle:
under the condition that the ejector of the low-power section cannot meet the working condition, the Roots-type hydrogen pump works, gas enters a pressurizing cavity from the hydrogen pump air inlet channel 8 and the air inlet 6, after being pressurized in the pressurizing cavity, the gas is discharged outwards from the air outlet 7 into the second communication cavity 5 through the hydrogen pump air outlet channel 10 and the one-way valve 11, and then enters the fuel cell stack;
the ejector 3 works at a high flow rate, a part of gas in the air inlet channel 8 of the hydrogen pump can also enter the first communication cavity 4 through the air inlet channel 9 of the ejector, then enter the low-pressure suction cavity 12 of the ejector 3 through the first communication cavity 4, then enter the second communication cavity 5 through the mixing cavity 14 and the diffusion cavity 15, and finally be discharged to the fuel cell stack outwards through the second communication cavity 5;
hydrogen of a hydrogen source enters the switch valve air inlet channel 20 from the air inlet joint 29, then enters the switch valve 18 through the switch valve air inlet channel 20, enters the proportional valve air inlet channel 21 after being discharged through the switch valve 18, and enters the through proportional valve 19 only through the proportional valve air inlet channel 21, then enters the high-pressure nozzle 13 of the ejector 3 through the through proportional valve air outlet channel 22 under the working condition of small flow, and finally is discharged to the second communication cavity 5 after being pressurized by the ejector 3 and then enters the fuel cell stack;
under the peak working condition, the bypass proportional valve 23 is opened to increase the flow rate of hydrogen entering the stack, the hydrogen enters the bypass proportional valve exhaust passage 24 through the bypass proportional valve 23, then enters the first bypass passage 27 through the communication groove 25, then directly enters the second communication cavity 5 through the second bypass passage 28 by bypassing the ejector, and the two parts of hydrogen are mixed in the second communication cavity 5 and then are conveyed to the fuel cell stack.
The above embodiments are not to be taken as limiting the scope of the invention, and any alternatives or modifications to the embodiments of the invention will be apparent to those skilled in the art and fall within the scope of the invention.
The present invention is not described in detail in the present application, and is well known to those skilled in the art.
Claims (8)
1. An integrated bypass injection type roots hydrogen circulating pump which is characterized in that: the hydrogen circulating pump comprises a hydrogen circulating pump, wherein a booster cavity shell of the hydrogen circulating pump is connected with an integrated cover plate, the integrated cover plate comprises an integrated shell, the rear side of the integrated shell is provided with a hydrogen pump cover plate, the front side of the integrated shell is provided with an ejector, the left side surface of the integrated shell is provided with a first communication cavity, the right side surface of the integrated shell is provided with a second communication cavity, the hydrogen pump cover plate is provided with an air inlet and an air outlet which are communicated with the booster cavity of the hydrogen circulating pump, the air inlet is communicated with a hydrogen pump air inlet channel which is arranged in the integrated shell and extends towards the ejector, one side of the hydrogen pump air inlet channel is communicated with an ejector air inlet channel which is arranged in the integrated shell and extends towards the first communication cavity, and the air outlet is communicated with a hydrogen pump air outlet channel which is arranged in the integrated shell and extends towards the second communication cavity;
the ejector comprises a low-pressure suction cavity which is arranged in the integrated shell and communicated with the first communication cavity, a high-pressure nozzle is arranged in the low-pressure suction cavity, a mixing cavity and a diffusion cavity are arranged at the rear side of the low-pressure suction cavity, and the diffusion cavity is communicated with the second communication cavity;
the left side of the integrated cover plate is connected with a valve integrated device, and the valve integrated device is provided with a switching valve and a proportional valve;
the valve integrated device comprises an integrated seat body, a switching valve and a through proportional valve are arranged on the integrated seat body, a switching valve air inlet channel communicated with the inlet direction of the switching valve is arranged in the integrated seat body, a proportional valve air inlet channel communicated with the outlet direction of the switching valve is arranged in the integrated seat body, the proportional valve air inlet channel is communicated with the inlet direction of the through proportional valve, a through proportional valve air outlet channel communicated with the outlet direction of the through proportional valve is also arranged in the integrated seat body, and the through proportional valve air outlet channel is communicated with a high-pressure nozzle of the ejector;
the integrated seat body is also provided with a bypass proportional valve, the inlet direction of the bypass proportional valve is communicated with the air inlet channel of the proportional valve, and the integrated seat body is also internally provided with a bypass proportional valve air outlet channel communicated with the outlet direction of the bypass proportional valve.
2. An integrated bypass ejector roots hydrogen circulation pump according to claim 1, wherein: the air inlet channel of the hydrogen pump is a straight channel, and the air inlet channel of the ejector and the air outlet channel of the hydrogen pump are smooth transition bends.
3. An integrated bypass ejector roots hydrogen circulation pump according to claim 2, wherein: the diameters of the air inlet channel of the ejector and the air outlet channel of the hydrogen pump are smaller than those of the air inlet channel of the hydrogen pump.
4. An integrated bypass ejector roots hydrogen circulation pump according to claim 1, wherein: the check valve is arranged at the positions close to the outlet of the air inlet channel of the ejector and the exhaust channel of the hydrogen pump.
5. An integrated bypass ejector roots hydrogen circulation pump according to claim 1, wherein: the bypass proportional valve exhaust passage leads to in the left intercommunication groove of integrated pedestal, the intercommunication groove outside is shutoff through installing the apron on the integrated pedestal, and the intercommunication groove other end is linked together with the first bypass passageway of establishing in the integrated pedestal, and the other end of first bypass passageway extends to the right-hand member lateral part of integrated pedestal and is linked together with the second bypass passageway of establishing in the integrated casing, and the other end of second bypass passageway extends to the second intercommunication chamber of integrated casing.
6. An integrated bypass ejector roots hydrogen circulation pump according to claim 1, wherein: and the outer end of the air inlet channel of the switch valve is connected with an air inlet joint.
7. An integrated bypass ejector roots hydrogen circulation pump according to claim 1, wherein: and a plurality of mounting support seats are respectively arranged on the integrated shell and the hydrogen circulation pump shell.
8. An integrated bypass ejector roots hydrogen circulation pump according to claim 1, wherein: the integrated shell and the integrated seat body are respectively made of metal materials or nonmetal materials in an integrated mode.
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| CN202211089076.7A CN115425256B (en) | 2022-09-07 | 2022-09-07 | Integrated bypass injection type Roots hydrogen circulating pump |
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| CN202211089076.7A CN115425256B (en) | 2022-09-07 | 2022-09-07 | Integrated bypass injection type Roots hydrogen circulating pump |
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| CN115425256A CN115425256A (en) | 2022-12-02 |
| CN115425256B true CN115425256B (en) | 2023-07-07 |
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| CN116387557B (en) * | 2023-06-05 | 2023-08-25 | 北京亿华通科技股份有限公司 | Hydrogen supply system of low-pressure fuel cell and control method |
| CN118532357B (en) * | 2024-07-25 | 2024-10-11 | 苏州瑞驱电动科技有限公司 | Method for monitoring air inlet drainage channel by hydrogen circulating pump integrated with ejector |
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| CN210371178U (en) * | 2019-07-15 | 2020-04-21 | 烟台东德实业有限公司 | Gas inlet and outlet structure of Roots type hydrogen circulating pump |
| CN113357170A (en) * | 2021-06-04 | 2021-09-07 | 烟台东德实业有限公司 | Fuel cell hydrogen circuit series integrated system |
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| CN112864420B (en) * | 2021-03-15 | 2021-08-31 | 烟台东德实业有限公司 | Hydrogen supply system of fuel cell integrated by parallel connection of hydrogen circulating pump and ejector |
| CN112864419B (en) * | 2021-03-15 | 2021-11-09 | 烟台东德实业有限公司 | Hydrogen circulating pump and ejector series integrated fuel cell hydrogen supply system |
| CN113363533A (en) * | 2021-06-04 | 2021-09-07 | 烟台东德实业有限公司 | Fuel cell hydrogen path parallel integrated system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210371178U (en) * | 2019-07-15 | 2020-04-21 | 烟台东德实业有限公司 | Gas inlet and outlet structure of Roots type hydrogen circulating pump |
| CN113357170A (en) * | 2021-06-04 | 2021-09-07 | 烟台东德实业有限公司 | Fuel cell hydrogen circuit series integrated system |
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| CN115425256A (en) | 2022-12-02 |
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Denomination of invention: An integrated bypass injection Roots hydrogen circulation pump Granted publication date: 20230707 Pledgee: Qingdao Rural Commercial Bank Co.,Ltd. Yantai Branch Pledgor: YANTAI DONGDE INDUSTRIAL Co.,Ltd. Registration number: Y2024980007136 |
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