CN210897491U - Device for recycling tail gas of fuel cell based on Stirling generator - Google Patents
Device for recycling tail gas of fuel cell based on Stirling generator Download PDFInfo
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- CN210897491U CN210897491U CN201921927827.1U CN201921927827U CN210897491U CN 210897491 U CN210897491 U CN 210897491U CN 201921927827 U CN201921927827 U CN 201921927827U CN 210897491 U CN210897491 U CN 210897491U
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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 device for recycling hydrogen fuel cell tail gas based on a Stirling generator, which is characterized by comprising a hydrogen fuel cell, an alloy hydrogen storage device, a heat-conducting medium, a Stirling generator, a gas-water separator and a hydrogen combustion chamber; the alloy hydrogen storage device is connected with a hydrogen fuel cell through a hydrogen supply pipeline, the outer side of the alloy hydrogen storage device is connected with a cold cavity of the Stirling generator through a heat conducting medium, a gas-water mixture generated by the hydrogen fuel cell enters a gas-water separator through a pipeline, the gas-water separator is connected with a hydrogen combustion chamber, and the hydrogen combustion chamber is connected with a hot cavity of the Stirling generator. The utility model has the advantages that: after water and hydrogen discharged by the hydrogen fuel cell pass through a gas-water separator, the hydrogen participates in combustion to heat the hot cavity, and the alloy hydrogen storage device transmits cold energy to the cold cavity in the hydrogen release process; the current generated by the Stirling generator provides electric energy for various low-voltage electric equipment, and the utilization rate of hydrogen is improved.
Description
Technical Field
The utility model relates to a tail gas recycle device especially relates to a retrieve device of fuel cell tail gas based on stirling generator.
Background
The hydrogen fuel cell is a novel, efficient and clean power generation system. Its generating efficiency can reach about 60%, and its discharge is water, and has no pollution to environment.
In order to ensure stable operation of the fuel cell, the hydrogen supply of the fuel cell system must ensure uniform, sufficient and stable supply of fuel hydrogen to each unit cell of the stack. Because the fuel cell uses the solid polymer proton exchange membrane as the electrolyte, the performance of the fuel cell is obviously influenced by the conductivity of the proton exchange membrane, and the conductivity of the currently used proton exchange membrane is closely related to the water content of the currently used proton exchange membrane.
Excess moisture directly affects fuel cell performance and life problems, including voltage drop due to mass transport limitations at high current densities, voltage stability at low current densities, and reliability at cold start. In order to ensure good performance of the fuel cell, the hydrogen fuel cell uses hydrogen gas with high pressure to remove moisture accumulated at the anode, but also causes waste of hydrogen gas and the danger of explosion caused by the hydrogen gas diffusing into the air.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: how to solve the problem of hydrogen waste and potential safety hazard in the hydrogen fuel cell in the prior art.
The utility model discloses a following technical means realizes solving above-mentioned technical problem:
the device for recycling the tail gas of the hydrogen fuel cell based on the Stirling generator comprises the hydrogen fuel cell, an alloy hydrogen storage device, a heat-conducting medium, the Stirling generator, a gas-water separator and a hydrogen combustion chamber; the alloy hydrogen storage device is connected with a hydrogen fuel cell through a hydrogen supply pipeline, the outer side of the alloy hydrogen storage device is connected with a cold cavity of the Stirling generator through a heat conducting medium, a gas-water mixture generated by the hydrogen fuel cell enters a gas-water separator through a pipeline, the gas-water separator is connected with a hydrogen combustion chamber, and the hydrogen combustion chamber is connected with a hot cavity of the Stirling generator.
The water and the hydrogen discharged by the hydrogen fuel cell of the utility model are discharged through the gas-water separator, the water is discharged, and the hydrogen enters the hydrogen combustion chamber to be combusted, so as to heat the hot cavity of the Stirling generator; the alloy hydrogen storage device is connected with the cold cavity of the Stirling generator through a heat-conducting medium, and cold energy is transferred to the cold cavity of the Stirling generator in the hydrogen releasing process; the current generated by the Stirling generator under the action of the high-temperature heat source and the low-temperature heat source can provide electric energy for various low-voltage electric equipment or convert the electric energy into mechanical energy for utilization, and the utilization rate of hydrogen is improved.
Preferably, the device further comprises a storage battery, and the Stirling generator is connected with the storage battery.
The storage battery stores the electric energy and improves the power supply for the electric equipment.
Preferably, the device further comprises a rectifying and voltage stabilizing module, and the rectifying and voltage stabilizing module is connected between the Stirling generator and the storage battery.
Preferably, the hydrogen gas combustion system further comprises a gas drying and storing device, and the hydrogen gas separated by the gas-water separator enters the gas drying and storing device and then enters the hydrogen gas combustion chamber.
Preferably, the hydrogen combustion system further comprises a flow meter, and the flow meter is arranged between the gas drying and storing device and the hydrogen combustion chamber.
The gas drying and storing device can dry hydrogen, so that the hydrogen is fully combusted, and the hydrogen is stored when the hydrogen amount is large, thereby avoiding waste, and controlling the hydrogen amount entering the hydrogen combustion chamber through the flow meter.
Preferably, the hydrogen fuel cell is further provided with a first air inlet duct.
Preferably, the gas-water separator is provided with a first drainage pipe.
Preferably, the hydrogen combustion chamber is provided with a second air inlet pipe and a second water discharge pipe.
Preferably, the heat conducting medium is a heat dissipation fin or a heat pipe.
Preferably, the gas dry storage device is a cold trap.
The utility model has the advantages that:
(1) the water and the hydrogen discharged by the hydrogen fuel cell of the utility model are discharged through the gas-water separator, the water is discharged, and the hydrogen enters the hydrogen combustion chamber to be combusted, so as to heat the hot cavity of the Stirling generator; the alloy hydrogen storage device is connected with the cold cavity of the Stirling generator through a heat-conducting medium, and cold energy is transferred to the cold cavity of the Stirling generator in the hydrogen releasing process;
(2) the current generated by the Stirling generator under the action of the high-temperature heat source and the low-temperature heat source can provide electric energy for various low-voltage electric equipment or convert the electric energy into mechanical energy for utilization, so that the utilization rate of hydrogen is improved; the storage battery stores the electric energy and improves the power supply for the electric equipment;
(3) the gas drying and storing device can dry hydrogen, so that the hydrogen is fully combusted, and the hydrogen is stored when the hydrogen amount is large, thereby avoiding waste, and controlling the hydrogen amount entering the hydrogen combustion chamber through the flow meter.
Drawings
Fig. 1 is a schematic structural diagram of a device for recycling hydrogen fuel cell tail gas based on a stirling generator according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a device for recycling hydrogen fuel cell exhaust based on a stirling generator according to an embodiment of the present invention.
Reference numbers in the figures: the device comprises a hydrogen fuel cell 1, an alloy hydrogen storage device 2, a heat-conducting medium 3, a Stirling generator 4, a cold cavity 41, a hot cavity 42, a gas-water separator 5, a first water discharge pipe 51, a hydrogen combustion chamber 6, a second air inlet pipeline 61, a second water discharge pipe 62, a storage battery 7, a rectifying and voltage-stabilizing module 8, a gas drying and storage device 9 and a flowmeter 91.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, the device for recycling hydrogen fuel cell tail gas based on the stirling generator comprises a hydrogen fuel cell 1, an alloy hydrogen storage device 2, a heat-conducting medium 3, a stirling generator 4, a gas-water separator 5 and a hydrogen combustion chamber 6; the alloy hydrogen storage device 2 is connected with the hydrogen fuel cell 1 through a hydrogen supply pipeline, the outer side of the alloy hydrogen storage device 2 is connected with a cold cavity 41 of the Stirling generator 4 through a heat-conducting medium 3, a gas-water mixture generated by the hydrogen fuel cell 1 enters a gas-water separator 5 through a pipeline, the gas-water separator 5 is connected with a hydrogen combustion chamber 6, and the hydrogen combustion chamber 6 is connected with a hot cavity 42 of the Stirling generator 4.
In the embodiment, the Stirling generator 4 further comprises a storage battery 7, and the storage battery 7 is connected with the Stirling generator 4. The storage battery 7 stores electric energy and provides power for electric equipment. The Stirling generator further comprises a rectifying and voltage-stabilizing module 8, and the rectifying and voltage-stabilizing module 8 is connected between the Stirling generator 4 and the storage battery 7. The Stirling generator 4 can also be directly connected with the electric equipment after being connected with the rectifying and voltage stabilizing module 8.
And the hydrogen fuel cell 1 is also provided with a first air inlet pipe 11, and the hydrogen combustion chamber 6 is provided with a second air inlet pipe 61 and a second water discharge pipe 62.
The gas-water separator 5 is provided with a first drain pipe 51.
In the embodiment, water and hydrogen discharged by the hydrogen fuel cell 1 pass through the gas-water separator 5, the water is discharged, and the hydrogen enters the hydrogen combustion chamber 6 to be combusted so as to heat the hot cavity 42 of the Stirling generator 4; the alloy hydrogen storage device 2 is connected with the cold cavity 41 of the Stirling generator 4 through the heat-conducting medium 3, and cold energy is transferred to the cold cavity 41 of the Stirling generator 4 in the hydrogen releasing process; the current generated by the Stirling generator 4 under the action of the high-temperature heat source and the low-temperature heat source can provide electric energy for various low-voltage electric equipment or convert the electric energy into mechanical energy for utilization, so that the utilization rate of hydrogen is improved; the Stirling engine can also be directly replaced by the Stirling engine, and at the moment, the device for recycling the tail gas of the hydrogen fuel cell based on the Stirling engine technology outputs electric energy to be converted into output kinetic energy.
Example two:
as shown in fig. 2, the present embodiment is different from the first embodiment in that: the hydrogen gas separation device also comprises a gas drying and storage device 9, and the hydrogen gas separated by the gas-water separator 5 enters the gas drying and storage device 9 and then enters the hydrogen gas combustion chamber 6.
And further comprises a flow meter 91, the flow meter 91 being installed between the gas drying storage device 9 and the hydrogen combustion chamber 6.
The gas drying and storing device 9 can dry hydrogen, so that the hydrogen is fully combusted, and when the hydrogen amount is large, the hydrogen is stored, thereby avoiding waste, and the hydrogen amount entering the hydrogen combustion chamber 6 is controlled through the flow meter 91.
The gas drying and storing device 9 is a drying container for containing various types of drying agents, and a cold trap can be selected in the embodiment.
Example three:
the heat-conducting medium 3 is a heat-radiating fin or a heat pipe, even graphene and the like.
The working process is as follows:
the mixture of water and hydrogen discharged from the hydrogen fuel cell 1 enters the gas-water separator 5 through a pipeline, the water is discharged from the first water discharge pipe 51, the hydrogen enters the gas drying and storing device 9 through a pipeline at the upper part of the device, part of the hydrogen can be temporarily stored in the container if the hydrogen is too large after drying treatment, the dry hydrogen quantitatively enters the hydrogen combustion chamber 6 under the control of the flow meter 91 to be mixed with air for combustion, the generated heat is used for heating the hot cavity 42 of the Stirling generator 4, and the water generated by combustion is discharged from the second water discharge pipe 62. Meanwhile, the alloy hydrogen storage device 2 is connected with the cold cavity 41 of the Stirling generator 4 through the heat-conducting medium 3, cold energy generated in the hydrogen releasing process is transferred to the cold cavity 41 of the Stirling generator 4, and therefore the alloy hydrogen storage device 2 can also keep high temperature, and hydrogen can be released efficiently and continuously. The Stirling generator 4 generates current under the action of a high-temperature heat source and a low-temperature heat source, the current is processed by the rectifying and voltage-stabilizing module 8 and then stored in the storage battery 7, and the storage battery 7 can provide electric energy for various low-voltage electric equipment.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The device for recycling the tail gas of the hydrogen fuel cell based on the Stirling generator is characterized by comprising the hydrogen fuel cell, an alloy hydrogen storage device, a heat-conducting medium, the Stirling generator, a gas-water separator and a hydrogen combustion chamber; the alloy hydrogen storage device is connected with a hydrogen fuel cell through a hydrogen supply pipeline, the outer side of the alloy hydrogen storage device is connected with a cold cavity of the Stirling generator through a heat conducting medium, a gas-water mixture generated by the hydrogen fuel cell enters a gas-water separator through a pipeline, the gas-water separator is connected with a hydrogen combustion chamber, and the hydrogen combustion chamber is connected with a hot cavity of the Stirling generator.
2. The device for recycling hydrogen fuel cell tail gas based on the stirling generator of claim 1 further comprising a battery, the stirling generator being connected to the battery.
3. The stirling generator-based hydrogen fuel cell exhaust gas recycling apparatus according to claim 2 further comprising a rectifying and voltage stabilizing module connected between the stirling generator and the battery.
4. The stirling generator-based hydrogen fuel cell tail gas recycling device of claim 1, further comprising a gas drying and storing device, wherein the hydrogen separated by the gas-water separator enters the gas drying and storing device and then enters the hydrogen combustor.
5. The stirling generator-based hydrogen fuel cell tail gas recycling apparatus according to claim 4 further comprising a flow meter installed between the gas dry storage device and the hydrogen combustion chamber.
6. The stirling generator-based hydrogen fuel cell exhaust gas recycling apparatus according to claim 1, wherein the hydrogen fuel cell is further provided with a first air inlet duct.
7. The stirling generator-based hydrogen fuel cell exhaust gas recycling apparatus according to claim 1, wherein the gas-water separator is provided with a first drain pipe.
8. The stirling generator-based hydrogen fuel cell exhaust gas recycling apparatus according to claim 1, the hydrogen combustor is provided with a second air inlet pipe and a second water outlet pipe.
9. The device for recycling hydrogen fuel cell tail gas based on the Stirling generator of claim 1, wherein the heat conducting medium is a heat radiating fin or a heat pipe.
10. The stirling generator-based hydrogen fuel cell exhaust gas recycling apparatus according to claim 4, wherein the gas dry storage device is a cold trap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921927827.1U CN210897491U (en) | 2019-11-07 | 2019-11-07 | Device for recycling tail gas of fuel cell based on Stirling generator |
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| CN201921927827.1U CN210897491U (en) | 2019-11-07 | 2019-11-07 | Device for recycling tail gas of fuel cell based on Stirling generator |
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| CN210897491U true CN210897491U (en) | 2020-06-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151223A (en) * | 2021-12-28 | 2022-03-08 | 成都中科氢阳能源科技有限公司 | Hydrogen fuel gas-electricity hybrid power system based on liquid organic hydrogen storage and Stirling external combustion engine |
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2019
- 2019-11-07 CN CN201921927827.1U patent/CN210897491U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151223A (en) * | 2021-12-28 | 2022-03-08 | 成都中科氢阳能源科技有限公司 | Hydrogen fuel gas-electricity hybrid power system based on liquid organic hydrogen storage and Stirling external combustion engine |
| CN114151223B (en) * | 2021-12-28 | 2024-04-26 | 成都中科氢阳能源科技有限公司 | Hydrogen fuel gas-electricity hybrid power system based on liquid organic hydrogen storage and Stirling external combustion engine |
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