CN216958116U - Fuel cell hydrogen supply and return multi-group ejector device and fuel cell system thereof - Google Patents
Fuel cell hydrogen supply and return multi-group ejector device and fuel cell system thereof Download PDFInfo
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- CN216958116U CN216958116U CN202220232270.5U CN202220232270U CN216958116U CN 216958116 U CN216958116 U CN 216958116U CN 202220232270 U CN202220232270 U CN 202220232270U CN 216958116 U CN216958116 U CN 216958116U
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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
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- 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
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Abstract
The utility model discloses a fuel cell hydrogen supply and return multi-group ejector device and a fuel cell system thereof, which comprises a proportional valve, a high-pressure joint, a plurality of ejector components, an outlet header and a base, wherein the input end of the proportional valve is communicated with a high-pressure hydrogen inlet by using a connecting pipeline, the output end of the proportional valve is communicated with the inlet end of the ejector components by using a connecting pipeline, the ejector components are arranged between the outlet header and the base, the inlet end of each ejector component is arranged in a corresponding hydrogen supply outlet, the outlet end of each ejector component is connected on the outlet header, hydrogen is supplied to a pile module by outputting through the outlet header, the structure integrates the proportional valve, the high-pressure joint, the ejector components and the outlet header on the base, different ejection requirements of low power and high power are met by arranging the ejector components, the adaptability is wide, the integrated level is high, compact structure, and the assembly precision is high, and the reliability is high.
Description
The technical field is as follows:
the utility model relates to a fuel cell hydrogen supply and return multi-group ejector device and a fuel cell system thereof.
Background art:
the new energy automobile is considered as an important link of energy transformation, and the proton exchange membrane fuel cell automobile is considered as the most mature representative of the electricity generation amount of the new energy automobile at present. The hydrogen and oxygen in the air are chemically reacted to generate electric energy, so that the automobile is driven to move forward. The fuel cell automobile does not generate carbon dioxide basically, and as a new-generation new energy automobile, the system optimization and the design and development of key parts can prolong the service life of a fuel cell power system.
In the existing fuel cell system, a hydrogen circulation system is an important unit of a fuel cell power module, and is used for conveying hydrogen to a fuel cell stack and purifying and recycling hydrogen tail gas. The hydrogen circulation usually adopts the hydrogen circulating pump to provide power, and the hydrogen circulating pump is bulky, and the consumption is also great, is very unfavorable for fuel cell system power density's improvement. The electrically driven pump has the advantages of complex structure, high cost, high energy consumption, short service life and inconvenient maintenance. The ejector is used as a hydrogen circulating device in part of hydrogen fuel cell systems, the ejector does not need to additionally increase power consumption, but multiple rows of tail gas are needed in the low-power stage of a single ejector, and hydrogen is wasted; the multi-stage ejector such as CN101459248B is easy to lose control and generate counter-flow condition under variable working conditions; the variable nozzle ejector US8999593 is complex in structure and control and high in cost.
The utility model content is as follows:
the utility model aims to provide a fuel cell hydrogen supply and return multi-group ejector device and a fuel cell system thereof, which can solve the technical problems that an ejector is adopted as a hydrogen circulating device in the prior art, multiple rows of tail gas are needed in the low-power stage of the ejector product structure, hydrogen is wasted, the operating condition is easy to lose control and the backflow condition occurs, and the structure is not tight enough.
The purpose of the utility model is realized by the following technical scheme.
The utility model aims to provide a fuel cell hydrogen supply and return multi-group ejector device, which is characterized in that: including the proportional valve, high pressure joint, a plurality of ejector components, export collector and base, be provided with high-pressure hydrogen entry on the base, a plurality of hydrogen air feed outlets, return hydrogen entry and connecting line, high pressure joint installs at high-pressure hydrogen entry, the proportional valve is installed on the top of base, the input of proportional valve utilizes connecting line and high-pressure hydrogen entry intercommunication, the output of proportional valve utilizes the inlet end intercommunication of connecting line and ejector component, a plurality of ejector components set up between export collector and base, a plurality of ejector components and a plurality of hydrogen air feed outlets are the one-to-one, the inlet end setting of every ejector component is in the hydrogen air feed outlet that corresponds, the exit end of every ejector component is connected on the export collector, export for the pile module supply hydrogen through the export collector.
The ejector comprises an ejector assembly, a plurality of ejector assemblies and a plurality of air inlet pipes, wherein the ejector assemblies are arranged in the ejector assembly, the ejector assemblies are arranged in the air inlet pipes, the air inlet pipes are arranged at one ends of the outlet headers, the air outlet pipes are arranged at the other ends of the outlet headers, the air inlet pipes and the ejector assemblies are in one-to-one correspondence, and the outlet ends of the ejector assemblies are correspondingly nested in the air inlet pipes.
The outlet header is funnel shaped.
The connecting pipelines comprise an input main pipeline, an output main pipeline and a plurality of output branch pipelines, and the output branch pipelines correspond to the hydrogen gas supply outlets one by one; the input end of the proportional valve is communicated with the high-pressure hydrogen inlet by an input main pipeline; the output end of the proportional valve is communicated with the inlet end of the ejector assembly by an output main pipeline and a plurality of output branch pipelines.
The number of the plurality of ejector components ranges from 2 to 10.
Each ejector component comprises a nozzle and a mixing diffuser pipe;
one end of the mixed diffuser pipe protrudes out of the annular boss, the side wall of the annular boss is provided with a plurality of gaps as inlets of fluid to be drained, the annular boss is embedded into a hydrogen supply outlet of the base, a hydrogen return inlet of the base is communicated with the mixed diffuser pipe through the plurality of gaps of the annular boss, the other end of the mixed diffuser pipe is nested in the air inlet pipe and is hooped by a pipe hoop, and a mixed section flow passage and an expansion section flow passage are arranged in the mixed diffuser pipe;
the nozzle is sleeved at the end part of the annular boss, a first flow passage is arranged in the middle of the nozzle and serves as a passage of hydrogen fluid, a hydrogen fluid inlet is arranged at one end of the nozzle and serves as an inlet end of the ejector assembly, a high-pressure jet orifice is arranged at the other end of the nozzle, the acting high-pressure fluid ejected from the high-pressure jet orifice is mixed with the drained fluid flowing into the gap in a mixing section flow passage, and the mixture is ejected into an outlet manifold after passing through an expansion section flow passage and then is conveyed into the pile module in a concentrated mode.
The above-mentioned lateral surface of every mixed diffuser pipe on be equipped with mounting flange, the last a plurality of first mounting holes that are equipped with of mounting flange, be equipped with a plurality of second mounting holes that correspond with first mounting hole on the base, through the first mounting hole of screw precession and second mounting hole, will mix the diffuser pipe and fix on the base.
The aforesaid still include hydrogen filter element group spare, hydrogen filter element group spare is installed in the high-pressure hydrogen inlet, and hydrogen filter element group spare includes filter core, ring carrier and fixing base, and ring carrier and fixing base are installed respectively at the both ends of filter core, are equipped with a plurality of through-holes on the lateral wall of ring carrier, and high pressure joint installs when high-pressure hydrogen enters the mouth, and high pressure joint supports on the terminal surface of the fixing base of hydrogen filter element group spare.
The filter element is a sintered body, the end face of the fixing seat is provided with the rubber sealing gasket, and the high-pressure joint is tightly pressed by the rubber sealing gasket when being arranged at the high-pressure hydrogen inlet.
The utility model provides a fuel cell system, includes fuel cell system controller, pile module and hydrogen supply system, and the hydrogen supply system includes hydrogen source, stop valve, relief pressure valve and fuel cell and supplies hydrogen back to hydrogen multiunit ejector device, its characterized in that: the fuel cell hydrogen supply and return multi-group ejector device is characterized in that a high-pressure connector of the fuel cell hydrogen supply and return multi-group ejector device is connected with a hydrogen source, hydrogen of the hydrogen source enters the fuel cell hydrogen supply and return multi-group ejector device from the high-pressure connector through a stop valve and a pressure reducing valve, an air outlet pipe of an outlet header in the fuel cell hydrogen supply and return multi-group ejector device is connected with a hydrogen inlet of the electric pile module, and a return inlet of a base in the fuel cell hydrogen supply and return multi-group ejector device is connected with a hydrogen outlet of the electric pile module.
A water-vapor separator is arranged between the hydrogen return inlet of the base and the hydrogen outlet of the pile module, the mixed gas discharged from the hydrogen outlet of the pile module is processed by the water-vapor separator, the separated gas enters the hydrogen return inlet of the base, then is output to the gas outlet pipe of the outlet header pipe in the fuel cell hydrogen supply and return multi-group ejector device for reaction, and the separated liquid water is discharged from the water outlet of the water-vapor separator.
Compared with the prior art, the utility model has the following effects:
1) the utility model provides a fuel cell supplies hydrogen to return hydrogen multiunit ejector device which characterized in that: the high-pressure hydrogen fuel cell comprises a proportional valve, a high-pressure connector, a plurality of ejector components, an outlet header and a base, wherein a high-pressure hydrogen inlet, a plurality of hydrogen gas supply outlets, a hydrogen return inlet and a connecting pipeline are arranged on the base, the high-pressure connector is installed at the high-pressure hydrogen inlet, the proportional valve is installed on the top of the base, the input end of the proportional valve is communicated with the high-pressure hydrogen inlet through the connecting pipeline, the output end of the proportional valve is communicated with the inlet end of the ejector component through the connecting pipeline, the ejector components are arranged between the outlet header and the base, the ejector components correspond to the hydrogen gas supply outlets one by one, the inlet end of each ejector component is arranged in the corresponding hydrogen gas supply outlet, the outlet end of each ejector component is connected to the outlet header, hydrogen is output through the outlet header to supply hydrogen for a cell stack module, and the proportional valve, the high-pressure connector, the ejector components and the outlet header are structurally integrated on the base, the different injection requirements of low power and high power are met by arranging a plurality of injector components, the adaptability is wide, the integration level is high, the structure is compact, the assembly precision is high, and the reliability is high.
2) Other advantages of the present invention are described in detail in the examples section.
Description of the drawings:
FIG. 1 is a perspective view of a first embodiment of the present invention;
FIG. 2 is an exploded view of a first embodiment of the present invention;
FIG. 3 is another exploded perspective view of the first embodiment of the present invention;
FIG. 4 is a partially exploded view of a first embodiment of the present invention;
FIG. 5 is a front view of a first embodiment of the present invention;
FIG. 6 is a cross-sectional view A-A of FIG. 5;
FIG. 7 is a partial enlarged view of B in FIG. 6;
FIG. 8 is a schematic flow diagram of a hydrogen gas stream provided in accordance with one embodiment of the present invention;
FIG. 9 is a perspective view of an eductor assembly according to one embodiment of the present invention;
FIG. 10 is a front view of an eductor assembly according to one embodiment of the present invention;
FIG. 11 is a cross-sectional view C-C of FIG. 10;
FIG. 12 is a perspective view of a hydrogen filter assembly according to one embodiment of the present invention;
FIG. 13 is an elevation view of a hydrogen filter cartridge assembly provided in accordance with one embodiment of the utility model;
FIG. 14 is a cross-sectional view D-D of FIG. 13;
fig. 15 is a schematic diagram of the second embodiment of the present invention.
Fig. 16 is a control schematic diagram of a fuel cell system controller according to a second embodiment of the present invention.
The specific implementation mode is as follows:
the present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1 to 14, the present embodiment provides a fuel cell hydrogen supply and return multi-group ejector device, which is characterized in that: the hydrogen supply device comprises a proportional valve 1, a high-pressure connector 2, a plurality of ejector components 3, an outlet header 4 and a base 5, wherein a high-pressure hydrogen inlet 51, a plurality of hydrogen supply outlets 52, a hydrogen return inlet 53 and a connecting pipeline 54 are arranged on the base 5, the high-pressure connector 2 is arranged on the high-pressure hydrogen inlet 51, the proportional valve 1 is arranged on the top of the base 5, the input end of the proportional valve 1 is communicated with the high-pressure hydrogen inlet 51 through the connecting pipeline 54, the output end of the proportional valve 1 is communicated with the inlet end 31 of the ejector component 3 through the connecting pipeline 54, the ejector components 3 are arranged between the outlet header 4 and the base 5, the ejector components 3 and the hydrogen supply outlets 52 are in one-to-one correspondence, the inlet end 31 of each ejector component 3 is arranged in the corresponding hydrogen supply outlet 52, the outlet end 32 of each ejector component 3 is connected to the outlet header 4, and hydrogen is output to a galvanic pile module through the outlet header 4, this structure is integrated on the base with proportional valve, high pressure joint, a plurality of ejector subassembly and export collector structure, arranges the different of satisfying low-power and high power through a plurality of ejector subassemblies and draws and penetrate the requirement, and adaptability is wide, and the integrated level is high, compact structure, and the assembly precision is high, and the reliability is high, and multiunit ejector device structural arrangement can use shorter ejector in addition, makes fuel cell hydrogen supply return hydrogen multiunit ejector device overall structure length shorter, saves installation space.
A plurality of air inlet pipes 41 are arranged at one end of the outlet header 4, an air outlet pipe 42 is arranged at the other end of the outlet header 4, the air inlet pipes 41 and the ejector components 3 are in one-to-one correspondence, and the outlet end 32 of each ejector component 3 is correspondingly embedded in the air inlet pipe 41, so that the structure is simple.
The outlet header 4 is funnel-shaped, which is beneficial to the hydrogen introduced by the plurality of ejector components 3 to be collected to the outlet pipe 42 of the outlet header 4 for discharge, and the structure arrangement is reasonable.
The connecting pipeline 54 includes an input main pipeline 541, an output main pipeline 542 and a plurality of output branch pipelines 543, wherein the plurality of output branch pipelines 543 and the plurality of hydrogen gas supply outlets 52 are in one-to-one correspondence; the input end of the proportional valve 1 is communicated with the high-pressure hydrogen inlet 51 by an input main pipeline 541; the output end of the proportional valve 1 is communicated with the inlet end 31 of the ejector assembly 3 through the main output pipeline 542 and the output branch pipelines 543, the structural arrangement is reasonable, and hydrogen can conveniently enter the ejector assemblies 3.
The number of the plurality of ejector assemblies 3 ranges from 2 to 10.
Each of the above-mentioned ejector assemblies 3 includes a nozzle 33 and a mixing diffuser pipe 34; one end of the mixed diffuser pipe 34 protrudes out of the annular boss 341, the side wall of the annular boss 341 is provided with a plurality of notches 342 as inlets of the fluid to be drained, the annular boss 341 is embedded in the hydrogen supply outlet 52 of the base 5, the hydrogen return inlet 53 of the base 5 is communicated with the mixed diffuser pipe 34 through the plurality of notches 342 of the annular boss 341, the other end of the mixed diffuser pipe 34 is nested in the air inlet pipe 41 and is hooped tightly by the pipe hoop 40, and a mixed section flow passage 343 and an expansion section flow passage 344 are arranged in the mixed diffuser pipe 34; the nozzle 33 is sleeved at the end part of the annular boss 341, the nozzle 33 and the annular boss 341 are in interference fit, the first flow channel 331 is arranged in the middle of the nozzle 33 and used as a hydrogen fluid channel, one end of the nozzle 33 is provided with a hydrogen fluid inlet 332 and used as an inlet end 31 of the ejector component 3, the other end of the nozzle 33 is provided with a high-pressure jet orifice 333, the working high-pressure fluid jetted from the high-pressure jet orifice 333 is mixed with the guided fluid flowing in from the notch 342 in the mixing section flow channel 343, and is jetted into the outlet header 4 after passing through the expansion section flow channel 344 and then is conveyed into the pile module in a centralized manner, and the structure arrangement is reasonable and simple.
An installation flange 345 is arranged on the outer side surface of each mixed diffuser pipe 34, a plurality of first installation holes 346 are arranged on the installation flange 345, a plurality of second installation holes 55 corresponding to the first installation holes 346 are arranged on the base 5, the first installation holes 346 and the second installation holes 55 are screwed in through screws 340, the mixed diffuser pipes 34 are fixed on the base 5, and the installation structure is simple.
Foretell still include hydrogen filter element group spare 6, hydrogen filter element group spare 6 is installed in high pressure hydrogen entry 51, hydrogen filter element group spare 6 includes filter core 61, ring carrier 62 and fixing base 63, the both ends at filter core 61 are installed respectively to ring carrier 62 and fixing base 63, be equipped with a plurality of through-holes 621 on ring carrier 62's the lateral wall, improve the flow through of hydrogen, high pressure joint 2 is when installing in high pressure hydrogen entry 51, high pressure joint 2 supports on the terminal surface at hydrogen filter element group spare 6's fixing base 63, it effectively prevents that impurity from getting into the pile module to increase hydrogen filter element group spare 6, the protection pile module, high reliability.
The filter element 61 is a sintered body, the rubber sealing gasket 64 is arranged on the end face of the fixing seat 63, and when the high-pressure joint 2 is arranged at the high-pressure hydrogen inlet 51, the rubber sealing gasket 64 is compressed by the high-pressure joint 2, so that the sealing effect is good, and hydrogen gas is prevented from leaking between the fixing seat 63 and the high-pressure joint 2.
Example two:
as shown in fig. 15 and 16, a fuel cell system includes a fuel cell system controller, a stack module and a hydrogen supply system, where the hydrogen supply system includes a hydrogen source, a stop valve, a pressure reducing valve and a fuel cell hydrogen supply and return multi-group ejector device, and is characterized in that: the fuel cell hydrogen supply and return multi-group ejector device is implemented as described above, the high-pressure connector 2 of the fuel cell hydrogen supply and return multi-group ejector device is connected with a hydrogen source, hydrogen of the hydrogen source enters the fuel cell hydrogen supply and return multi-group ejector device from the high-pressure connector 2 through a stop valve and a pressure reducing valve, the gas outlet pipe 42 of the outlet header 4 of the fuel cell hydrogen supply and return multi-group ejector device is connected with the hydrogen inlet of the electric pile module, and the hydrogen return inlet 53 of the base 5 of the fuel cell hydrogen supply and return multi-group ejector device is connected with the hydrogen outlet of the electric pile module.
A water-vapor separator is arranged between the hydrogen return inlet 53 of the base 5 and the hydrogen outlet of the pile module, the mixed gas discharged from the hydrogen outlet of the pile module is processed by the water-vapor separator, the separated gas enters the hydrogen return inlet 53 of the base, then is output to the gas outlet pipe 42 of the outlet header pipe 4 in the fuel cell hydrogen supply and return multi-group ejector device for reaction, and the separated liquid water is discharged from the water outlet of the water-vapor separator.
The above embodiments are only preferred embodiments of the present invention, but the present invention is not limited thereto, and any other changes, modifications, substitutions, combinations, simplifications, which are made without departing from the spirit and principle of the present invention, are all equivalent replacements within the protection scope of the present invention.
Claims (11)
1. The utility model provides a fuel cell supplies hydrogen to return hydrogen multiunit ejector device which characterized in that: the high-pressure hydrogen injection device comprises a proportional valve (1), a high-pressure connector (2), a plurality of ejector components (3), an outlet header (4) and a base (5), wherein a high-pressure hydrogen inlet (51), a plurality of hydrogen gas supply outlets (52), a hydrogen return inlet (53) and a connecting pipeline (54) are arranged on the base (5), the high-pressure connector (2) is arranged at the high-pressure hydrogen inlet (51), the proportional valve (1) is arranged at the top of the base (5), the input end of the proportional valve (1) is communicated with the high-pressure hydrogen inlet (51) through the connecting pipeline (54), the output end of the proportional valve (1) is communicated with an inlet end (31) of each ejector component (3) through the connecting pipeline (54), the ejector components (3) are arranged between the outlet header (4) and the base (5), the ejector components (3) are in one-to-one correspondence with the hydrogen gas supply outlets (52), and the inlet end (31) of each ejector component (3) is arranged in the corresponding hydrogen gas supply outlet (52) The outlet end (32) of each ejector assembly (3) is connected to the outlet header (4) and outputs through the outlet header (4) to supply hydrogen to the stack module.
2. The fuel cell hydrogen supply and return multi-group ejector device according to claim 1, wherein: a plurality of air inlet pipes (41) are arranged at one end of the outlet header (4), an air outlet pipe (42) is arranged at the other end of the outlet header (4), the air inlet pipes (41) and the ejector components (3) are in one-to-one correspondence, and the outlet end (32) of each ejector component (3) is correspondingly embedded in the air inlet pipe (41).
3. The fuel cell hydrogen supply and return multi-group ejector device according to claim 2, wherein: the outlet header (4) is funnel-shaped.
4. The fuel cell hydrogen supply and return multi-group eductor apparatus of claim 1, 2 or 3 wherein: the connecting pipeline (54) comprises an input main pipeline (541), an output main pipeline (542) and a plurality of output branch pipelines (543), and the output branch pipelines (543) are in one-to-one correspondence with the hydrogen gas supply outlets (52); the input end of the proportional valve (1) is communicated with a high-pressure hydrogen inlet (51) by an input main pipeline (541); the output end of the proportional valve (1) is communicated with the inlet end (31) of the ejector assembly (3) through an output main pipeline (542) and a plurality of output branch pipelines (543).
5. The fuel cell hydrogen supply and return multi-group ejector device according to claim 4, wherein: the number of the plurality of ejector assemblies (3) ranges from 2 to 10.
6. The fuel cell hydrogen supply and return multi-group ejector device according to claim 5, wherein: each ejector assembly (3) comprises a nozzle (33) and a mixing diffuser pipe (34);
one end of the mixed diffuser pipe (34) protrudes out of the annular boss (341), the side wall of the annular boss (341) is provided with a plurality of gaps (342) as inlets of drained fluids, the annular boss (341) is embedded into the hydrogen supply outlet (52) of the base (5), the hydrogen return inlet (53) of the base (5) is communicated with the mixed diffuser pipe (34) through the plurality of gaps (342) of the annular boss (341), the other end of the mixed diffuser pipe (34) is nested in the air inlet pipe (41) and is hooped by a pipe hoop (40), and a mixed section flow passage (343) and an expanded section flow passage (344) are arranged in the mixed diffuser pipe (34);
the nozzle (33) is sleeved at the end part of the annular boss (341), a first flow passage (331) is arranged in the middle of the nozzle (33) and serves as a hydrogen fluid passage, a hydrogen fluid inlet (332) is arranged at one end of the nozzle (33) and serves as an inlet end (31) of the ejector assembly (3), a high-pressure jet opening (333) is arranged at the other end of the nozzle (33), the working high-pressure fluid jetted from the high-pressure jet opening (333) is mixed with the guided fluid flowing into the notch (342) in the mixing section flow passage (343), and the mixed fluid passes through the expansion section flow passage (344) and then is jetted into the outlet header (4) and then is conveyed into the stack module in a concentrated mode.
7. The fuel cell hydrogen supply and return multi-group ejector device according to claim 6, wherein: be equipped with mounting flange (345) on the lateral surface of every mixed diffuser pipe (34), be equipped with a plurality of first mounting holes (346) on mounting flange (345), be equipped with a plurality of second mounting holes (55) that correspond with first mounting hole (346) on base (5), through screw (340) precession first mounting hole (346) and second mounting hole (55), will mix diffuser pipe (34) and fix on base (5).
8. The fuel cell hydrogen supply and return multi-group ejector device according to claim 7, wherein: still include hydrogen filter element group spare (6), install in high pressure hydrogen entry (51) hydrogen filter element group spare (6), hydrogen filter element group spare (6) are including filter core (61), ring carrier (62) and fixing base (63), install the both ends at filter core (61) respectively in ring carrier (62) and fixing base (63), be equipped with a plurality of through-holes (621) on the lateral wall of ring carrier (62), high pressure connects (2) to install when high pressure hydrogen entry (51), high pressure connects (2) to support on the terminal surface of fixing base (63) of hydrogen filter element group spare (6).
9. The fuel cell hydrogen supply and return multi-group ejector device according to claim 8, wherein: the filter element (61) is a sintered body, a rubber sealing gasket (64) is arranged on the end face of the fixed seat (63), and when the high-pressure joint (2) is arranged at the high-pressure hydrogen inlet (51), the rubber sealing gasket (64) is compressed by the high-pressure joint (2).
10. The utility model provides a fuel cell system, includes fuel cell system controller, pile module and hydrogen supply system, and the hydrogen supply system includes hydrogen source, stop valve, relief pressure valve and fuel cell and supplies hydrogen back to hydrogen multiunit ejector device, its characterized in that: the fuel cell hydrogen supply and return multi-group ejector device is the fuel cell hydrogen supply and return multi-group ejector device as claimed in any one of the claims 1 to 9, a high-pressure connector (2) of the fuel cell hydrogen supply and return multi-group ejector device is connected with a hydrogen source, hydrogen of the hydrogen source enters the fuel cell hydrogen supply and return multi-group ejector device from the high-pressure connector (2) through a stop valve and a pressure reducing valve, an air outlet pipe (42) of an outlet header (4) of the fuel cell hydrogen supply and return multi-group ejector device is connected with a hydrogen inlet of an electric pile module, and a hydrogen return inlet (53) of a base (5) of the fuel cell hydrogen supply and return multi-group ejector device is connected with a hydrogen outlet of the electric pile module.
11. A fuel cell system according to claim 10, wherein: a water-vapor separator is arranged between a hydrogen return inlet (53) of the base (5) and a hydrogen outlet of the pile module, mixed gas discharged from the hydrogen outlet of the pile module enters the hydrogen return inlet (53) of the base after being treated and separated by the water-vapor separator, and then is output to an air outlet pipe (42) of an outlet header (4) of the fuel cell hydrogen supply and return multi-group ejector device for reaction, and then enters the pile module for reaction, and separated liquid water is discharged from a water outlet of the water-vapor separator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220232270.5U CN216958116U (en) | 2022-01-27 | 2022-01-27 | Fuel cell hydrogen supply and return multi-group ejector device and fuel cell system thereof |
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| CN202220232270.5U CN216958116U (en) | 2022-01-27 | 2022-01-27 | Fuel cell hydrogen supply and return multi-group ejector device and fuel cell system thereof |
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| CN216958116U true CN216958116U (en) | 2022-07-12 |
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