CN217762225U - Fuel cell hydrogen circulation check valve and fuel cell system - Google Patents
Fuel cell hydrogen circulation check valve and fuel cell system Download PDFInfo
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- CN217762225U CN217762225U CN202221525258.XU CN202221525258U CN217762225U CN 217762225 U CN217762225 U CN 217762225U CN 202221525258 U CN202221525258 U CN 202221525258U CN 217762225 U CN217762225 U CN 217762225U
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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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Abstract
The utility model discloses a fuel cell hydrogen circulation check valve and fuel cell system, including access connection and outlet connection, the access connection includes first entry and first export, the outlet connection includes second entry and second export, first exit is equipped with the non return diaphragm, the non return diaphragm includes ring packing and sets up the sealed diaphragm in ring packing, be equipped with the connecting plate between sealed diaphragm and ring packing's the inboard and be connected, sealed diaphragm lid is in first exit, ring packing is compressed tightly by access connection and outlet connection with partial connecting plate, under the normal condition, sealed diaphragm covers first export and makes the check valve close, thereby sealed diaphragm pressurized opens the check valve around the connecting plate upset under the access connection condition of ventilating, the steam generator is simple in structure, play tightly, ring packing is used for the gap of sealed access connection and outlet connection junction to prevent the fluid leakage, middle sealed diaphragm can be bounced open and reset and be used for realizing the non return function, it is sealed effectual.
Description
The technical field is as follows:
the utility model relates to a fuel cell hydrogen circulation check valve and fuel cell system.
The background art comprises the following steps:
with the continuous increase of national economy of China and the continuous improvement of the living standard of people, automobiles become a necessary tool for people to go out, with the increase of haze of a plurality of cities in China, people are made to be aware of the fact that the development of new energy is unsmooth, new energy automobiles are regarded as an important link of energy transformation, and proton exchange membrane fuel cell automobiles are regarded as the most mature representatives of the electric quantity production of the new energy automobiles at present. The hydrogen and oxygen in the air are subjected to chemical reaction to generate electric energy, so that the automobile is pushed to move forward, and the hydrogen-oxygen hybrid vehicle has a series of advantages of simple structure, no pollution to the atmosphere, energy conservation, high efficiency and the like. The fuel cell automobile basically does not generate carbon dioxide, and as a new-generation new energy automobile, the system optimization and the design and development of key parts can enable the service life of a fuel cell power system to be longer.
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 ejector is used as a hydrogen circulating device in part of hydrogen fuel cell systems, it is very important to prevent liquid water from being discharged normally due to reverse flow of a hydrogen return pipeline of the ejector to damage the galvanic pile, and the addition of the check valve in the hydrogen return pipeline is an effective solution to the problem.
In the prior art, the structure of the check valve is reset by a spring, so that the pressure loss is large, and the check valve is not suitable for a hydrogen circulation system of a fuel cell ejector; see also patent No. CN201780042916.5, entitled diaphragm check valve for compressed air facility, in this structural scheme, the check valve structure is too complicated, and the fastening of the sealing diaphragm by the snap fit is not reliable.
The invention content is as follows:
the utility model aims at providing a fuel cell hydrogen circulation check valve and fuel cell system can solve prior art and suspend the return valve and adopt the spring to reset, and loss of pressure is big, is not suitable for the hydrogen circulation system of fuel cell ejector, and the structure is complicated, sealed effect poor technical problem.
The purpose of the utility model is realized by the following technical scheme.
The utility model aims at providing a fuel cell hydrogen circulation check valve, including access connection and outlet connection, access connection and outlet connection pass through fastener butt joint and are in the same place, its characterized in that: the inlet joint comprises a first inlet and a first outlet, the outlet joint comprises a second inlet and a second outlet, the first outlet is in butt joint with the second inlet, the first outlet is provided with a non-return diaphragm, the non-return diaphragm comprises an annular sealing ring and a sealing diaphragm arranged in the annular sealing ring, a connecting plate is arranged between the outer side of the sealing diaphragm and the inner side of the annular sealing ring and connected with the inner side of the annular sealing ring, the rest part of the outer side of the sealing diaphragm is suspended with the annular sealing ring, the sealing diaphragm covers the first outlet, the annular sealing ring and part of the connecting plate are compressed by the inlet joint and the outlet joint, under the normal condition, the sealing diaphragm covers the first outlet to close the check valve, and under the condition that the inlet joint is ventilated, the sealing diaphragm is compressed to turn over around the connecting plate to open the check valve.
The aperture of the first outlet is smaller than that of the second inlet, a supporting step is formed on the end face of the first outlet, the suspended end part of the sealing diaphragm is supported on the supporting step, and a gap is formed between the sealing diaphragm and the second inlet.
The edge of the second inlet is provided with an annular groove for mounting the annular sealing ring, an escape opening is arranged between one side of the annular groove and the second inlet, and the annular sealing ring is conveniently connected with the sealing diaphragm through the escape opening.
The annular sealing ring and the sealing diaphragm are integrally manufactured and formed.
The non-return diaphragm is made of elastic non-metallic materials.
The above-mentioned still include the non return layer board, be equipped with annular step in the first export, the non return layer board is installed on annular step.
The non-return supporting plate comprises an annular plate and an annular seat arranged in the annular plate, a plurality of connecting ribs distributed at intervals are arranged between the annular plate and the annular seat and connected with the annular seat, and a vent hole is formed in the middle of the annular seat.
The outer edge of the annular plate is provided with a plurality of elastic convex feet, the annular step is provided with a plurality of mounting grooves corresponding to the elastic convex feet, and when the annular plate is mounted on the annular step, the elastic convex feet are clamped in the mounting grooves.
The non-return supporting plate is a sheet metal part.
The fastener be the screw, the one end that the inlet joint is located first export is equipped with first installation ring flange, the one end department that the outlet joint is located the second entry is equipped with the second installation ring flange, be equipped with first screw hole and second screw hole on first installation ring flange and the second installation ring flange respectively, pass through first screw hole and second screw hole through the screw and connect inlet joint and outlet joint lock together.
The utility model provides a fuel cell system, including the pile module, supply the hydrogen system, catch water and check valve, supply the hydrogen system to include high-pressure hydrogen gas jar, the stop valve, relief pressure valve and ejector, the hydrogen of high-pressure hydrogen gas jar is through the stop valve, relief pressure valve and ejector get into the hydrogen entry of pile module, the hydrogen export of pile module carries catch water with the aqueous vapor mixture after will reacting, the hydrogen behind catch water separates the moisture through the catch water behind the check valve, carry the back hydrogen of ejector again and draw mouthful, its characterized in that: the check valve is a fuel cell hydrogen circulation check valve as described above.
Compared with the prior art, the utility model, following effect has:
1. the utility model provides a fuel cell hydrogen circulation check valve, includes inlet connection and outlet connection, and inlet connection and outlet connection are in the same place its characterized in that through fastener butt joint: the inlet joint comprises a first inlet and a first outlet, the outlet joint comprises a second inlet and a second outlet, the first outlet is in butt joint with the second inlet, a non-return membrane is arranged at the first outlet and comprises an annular sealing ring and a sealing membrane arranged in the annular sealing ring, a connecting plate is arranged between the outer side of the sealing membrane and the inner side of the annular sealing ring to be connected, the rest part of the outer side of the sealing membrane is suspended from the annular sealing ring, the sealing membrane covers the first outlet, the annular sealing ring and part of the connecting plate are compressed by the inlet joint and the outlet joint, under normal conditions, the sealing membrane covers the first outlet to close the check valve, under the condition that the inlet joint is ventilated, the sealing membrane is pressed to overturn around the connecting plate to open the check valve, the structure is simple and compact, the annular sealing ring is used for sealing gaps at the joint of the inlet joint and the outlet joint to prevent fluid leakage, the middle sealing membrane can be opened and reset to realize the non-return function, and the sealing effect is good.
2. Other advantages of the present invention will be described in detail in the detailed description of the embodiments.
Description of the drawings:
fig. 1 is a perspective view provided by 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 schematic structural view of an outlet connector and a check diaphragm according to an embodiment of the present invention;
fig. 5 is a schematic structural view of an inlet joint and a non-return supporting plate according to an embodiment of the present invention;
fig. 6 is a front view provided by the first embodiment of the present invention;
FIG. 7 isbase:Sub>A cross-sectional view A-A of FIG. 6;
fig. 8 is a schematic diagram of the forward flow of gas provided by the first embodiment of the present invention;
fig. 9 is a schematic view of a reverse flow of gas provided by a first embodiment of the present invention;
fig. 10 is a schematic structural view of a non-return diaphragm according to an embodiment of the present invention;
fig. 11 is a schematic structural view of a non-return supporting plate according to an embodiment of the present invention;
fig. 12 is a schematic diagram of the second embodiment of the present invention.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1 to 11, the present embodiment provides a hydrogen circulation check valve for a fuel cell, including an inlet connector 1 and an outlet connector 2, where the inlet connector 1 and the outlet connector 2 are butt-jointed by a fastener, and the hydrogen circulation check valve is characterized in that: the inlet joint 1 comprises a first inlet 11 and a first outlet 12, the outlet joint 2 comprises a second inlet 21 and a second outlet 22, the first outlet 12 is butted with the second inlet 21, a non-return membrane 3 is arranged at the first outlet 12, the non-return membrane 3 comprises an annular sealing ring 31 and a sealing membrane 32 arranged in the annular sealing ring 31, a connecting plate 33 is arranged between the outer side of the sealing membrane 32 and the inner side of the annular sealing ring 31 for connection, the rest part of the outer side of the sealing membrane 32 is suspended with the annular sealing ring 31, the sealing membrane 32 covers the first outlet 12, the annular sealing ring 31 and part of the connecting plate 33 are compressed by the inlet joint 1 and the outlet joint 2, under the normal condition, the sealing membrane 32 covers the first outlet 12 to close the check valve, and under the condition that the inlet joint 1 is ventilated, the sealing membrane 32 is pressed around the connecting plate 33 to turn over to open the check valve.
The aperture of the first outlet 12 is smaller than that of the second inlet 21, the end face of the first outlet 12 forms a supporting step 120, the suspended end part of the sealing diaphragm 32 is supported on the supporting step 120, and a gap 10 is formed between the sealing diaphragm 32 and the second inlet 21.
An annular groove 211 for mounting the annular sealing ring 31 is formed in the edge of the second inlet 21, a clearance 212 is formed between one side of the annular groove 211 and the second inlet 21, and the annular sealing ring 31 and the sealing diaphragm 32 are conveniently connected due to the clearance 212.
The annular sealing ring 31 and the sealing diaphragm 32 are manufactured and formed integrally, and the manufacturing is convenient.
The non-return membrane 3 is made of elastic non-metallic material.
The anti-return device further comprises a non-return supporting plate 4, an annular step 121 is arranged in the first outlet 12, the non-return supporting plate 4 is installed on the annular step 121, when the non-return supporting plate is used for enabling gas to flow reversely, the non-return supporting plate supports a sealing diaphragm, the sealing diaphragm blocks the gas to enable the gas flowing reversely to not flow back, and the non-return effect is good.
The check supporting plate 4 comprises an annular plate 41 and an annular seat 42 arranged in the annular plate 41, a plurality of connecting ribs 43 distributed at intervals are arranged between the annular plate 41 and the annular seat 42 for connection, and the middle of the annular seat 42 is provided with a vent hole 421, so that the structure is simple.
The outer edge of the annular plate 41 is provided with a plurality of elastic convex feet 411, the annular step 121 is provided with a plurality of mounting grooves 1211 corresponding to the elastic convex feet 411, when the annular plate 41 is mounted on the annular step 121, the elastic convex feet 411 are clamped in the mounting grooves 1211, the mounting structure is simple, and the positioning effect is good.
The non-return supporting plate 4 is a sheet metal part.
The fastening piece is a screw 5, a first mounting flange 13 is arranged at one end, located at the first outlet 12, of the inlet joint 1, a second mounting flange 23 is arranged at one end, located at the second inlet 21, of the outlet joint 2, a first screw hole 131 and a second screw hole 231 are respectively arranged on the first mounting flange 13 and the second mounting flange 23, the inlet joint 1 and the outlet joint 2 are connected in a locking mode through the screw 5 penetrating through the first screw hole 131 and the second screw hole 231, the mounting structure is simple, and the locking effect is good.
Example two:
as shown in fig. 12, a fuel cell system, including the pile module, supply the hydrogen system, catch water and check valve, supply the hydrogen system to include high-pressure hydrogen gas jar, the stop valve, relief pressure valve and ejector, the hydrogen of high-pressure hydrogen gas jar passes through the stop valve, relief pressure valve and ejector get into the hydrogen entry of pile module, the hydrogen export of pile module carries the high temperature hydrogen after will reacting and the aqueous vapor gas mixture to catch water, the hydrogen after catch water separates out moisture through the catch water is behind the check valve, carry the hydrogen of ejector again and draw the mouth, its characterized in that: the check valve is a fuel cell hydrogen circulation check valve as described in the first embodiment above.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.
Claims (11)
1. The utility model provides a fuel cell hydrogen circulation check valve, includes inlet joint (1) and outlet joint (2), and inlet joint (1) and outlet joint (2) are in the same place through fastener butt joint, its characterized in that: the inlet joint (1) comprises a first inlet (11) and a first outlet (12), the outlet joint (2) comprises a second inlet (21) and a second outlet (22), the first outlet (12) is in butt joint with the second inlet (21), a check diaphragm (3) is arranged at the position of the first outlet (12), the check diaphragm (3) comprises an annular sealing ring (31) and a sealing diaphragm (32) arranged in the annular sealing ring (31), a connecting plate (33) is arranged between the outer side of the sealing diaphragm (32) and the inner side of the annular sealing ring (31) for connection, the rest part of the outer side of the sealing diaphragm (32) is suspended with the annular sealing ring (31), the sealing diaphragm (32) covers the first outlet (12), the annular sealing ring (31) and part of the connecting plate (33) are compressed by the inlet joint (1) and the outlet joint (2), under normal conditions, the sealing diaphragm (32) covers the first outlet (12) to enable the check valve to be closed, and the check valve is opened by compressing the connecting plate (33) under the condition that the inlet joint (1) is ventilated.
2. A fuel cell hydrogen circulation check valve as claimed in claim 1, wherein: the aperture of the first outlet (12) is smaller than that of the second inlet (21), a supporting step (120) is formed on the end face of the first outlet (12), the suspended end part of the sealing diaphragm (32) is supported on the supporting step (120), and a gap (10) is formed between the sealing diaphragm (32) and the second inlet (21).
3. A fuel cell hydrogen circulation check valve as claimed in claim 2, wherein: an annular groove (211) used for installing the annular sealing ring (31) is formed in the edge of the second inlet (21), a clearance (212) is arranged between one side of the annular groove (211) and the second inlet (21), and the annular sealing ring (31) is conveniently connected with the sealing diaphragm (32) due to the arrangement of the clearance (212).
4. A fuel cell hydrogen circulation check valve as claimed in claim 3, wherein: the annular sealing ring (31) and the sealing diaphragm (32) are manufactured and molded integrally.
5. A fuel cell hydrogen circulation check valve as claimed in claim 4, wherein: the non-return membrane (3) is made of elastic non-metallic materials.
6. A fuel cell hydrogen circulation check valve according to claim 1 or 2 or 3 or 4 or 5, wherein: still include non return layer board (4), be equipped with annular step (121) in first export (12), non return layer board (4) are installed on annular step (121).
7. A fuel cell hydrogen circulation check valve according to claim 6, wherein: the non-return supporting plate (4) comprises an annular plate (41) and an annular seat (42) arranged in the annular plate (41), a plurality of connecting ribs (43) distributed at intervals are arranged between the annular plate (41) and the annular seat (42) for connection, and a vent hole (421) is arranged in the middle of the annular seat (42).
8. A fuel cell hydrogen circulation check valve as claimed in claim 7, wherein: the outer edge of the annular plate (41) is provided with a plurality of elastic convex feet (411), the annular step (121) is provided with a plurality of mounting grooves (1211) corresponding to the elastic convex feet (411), and when the annular plate (41) is mounted on the annular step (121), the elastic convex feet (411) are clamped in the mounting grooves (1211).
9. A fuel cell hydrogen circulation check valve as defined in claim 8, wherein: the non-return supporting plate (4) is a sheet metal part.
10. A fuel cell hydrogen circulation check valve as claimed in claim 9, wherein: the fastener is screw (5), the one end that inlet joint (1) is located first export (12) is equipped with first mounting flange dish (13), outlet joint (2) are located the one end department of second entry (21) and are equipped with second mounting flange dish (23), be equipped with first screw hole (131) and second screw hole (231) on first mounting flange dish (13) and the second mounting flange dish (23) respectively, pass first screw hole (131) and second screw hole (231) through screw (5) and connect inlet joint (1) and outlet joint (2) lock joint together.
11. The utility model provides a fuel cell system, including the pile module, supply the hydrogen system, catch water and check valve, supply the hydrogen system to include high-pressure hydrogen gas jar, the stop valve, relief pressure valve and ejector, the hydrogen of high-pressure hydrogen gas jar is through the stop valve, relief pressure valve and ejector get into the hydrogen entry of pile module, the hydrogen export of pile module carries catch water with the aqueous vapor mixture after will reacting, the hydrogen behind catch water separates the moisture through the catch water behind the check valve, carry the back hydrogen of ejector again and draw mouthful, its characterized in that: the check valve is a fuel cell hydrogen circulation check valve as claimed in any one of the preceding claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221525258.XU CN217762225U (en) | 2022-06-17 | 2022-06-17 | Fuel cell hydrogen circulation check valve and fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221525258.XU CN217762225U (en) | 2022-06-17 | 2022-06-17 | Fuel cell hydrogen circulation check valve and fuel cell system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217762225U true CN217762225U (en) | 2022-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221525258.XU Active CN217762225U (en) | 2022-06-17 | 2022-06-17 | Fuel cell hydrogen circulation check valve and fuel cell system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217762225U (en) |
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2022
- 2022-06-17 CN CN202221525258.XU patent/CN217762225U/en active Active
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Address after: Building 9, Building 7, No. 22 Xingwan Road, Cuiheng New District, Zhongshan City, Guangdong Province, 528449 Patentee after: Zhongshan Hydrogen Forest Energy Technology Co.,Ltd. Address before: 528400 floor 5, office building, No. 1, Guangfeng Industrial Avenue, West District, Zhongshan City, Guangdong Province (residence declaration) Patentee before: Dayang electric fuel cell technology (Zhongshan) Co.,Ltd. |