CN212571057U - Liquid-discharging and air-exhausting device of fuel cell - Google Patents
Liquid-discharging and air-exhausting device of fuel cell Download PDFInfo
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- CN212571057U CN212571057U CN202021191492.4U CN202021191492U CN212571057U CN 212571057 U CN212571057 U CN 212571057U CN 202021191492 U CN202021191492 U CN 202021191492U CN 212571057 U CN212571057 U CN 212571057U
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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 provides a flowing back exhaust apparatus of fuel cell, including reformer, feed liquor valve, flowing back valve, air inlet valve, air vent valve, first heat exchanger, diaphragm pump, methyl alcohol fuel inlet tank, coolant valve, radiator, second heat exchanger. Through the utility model discloses a fuel cell's flowing back exhaust apparatus can discharge the fuel liquid in the reformer and reforming gas mixture respectively, and need not to adopt inert gas or combustible gas to sweep to effectively simplified flowing back exhaust system's structure and improved flowing back exhaust system's security and reliability.
Description
Technical Field
The utility model belongs to the technical field of the fuel cell technique and specifically relates to a flowing back exhaust apparatus of fuel cell is related to.
Background
In the existing fuel cell system, when the operation is stopped, purging operation is generally performed by purging with inert gas and combustible gas (commonly used as N2, H2 and CH4) so that the fuel supply line is externally purged of the combustible gas and condensed water. However, the inert gas purging requires additional equipment, increases the complexity of the system structure and the operation cost of the system, is cumbersome and inconvenient to operate, and is difficult to apply to outdoor base stations and households, so that the inert gas purging method is difficult to popularize and apply. In addition, if combustible gas is used for purging, the potential safety hazard of the fuel cell system is greatly increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a fuel cell's flowing back exhaust apparatus to solve above-mentioned technical problem, can in time discharge unreacted methanol aqueous solution and combustible gas in the fuel supply pipeline, need not to adopt inert gas or combustible gas to sweep, effectively reduced the structural complexity of system and the security and the reliability that have improved the system.
In order to solve the technical problem, an embodiment of the present invention provides a liquid discharge and exhaust apparatus for a fuel cell, including a reformer, a liquid inlet valve, a liquid discharge valve, an air inlet valve, an exhaust valve, a first heat exchanger, a diaphragm pump, a methanol fuel liquid inlet tank, a coolant valve, a radiator, and a second heat exchanger;
a liquid outlet of the reformer is connected with a liquid inlet of the first heat exchanger through the liquid outlet valve, and a liquid outlet of the first heat exchanger is connected with an inlet of the methanol fuel liquid inlet tank through the liquid outlet valve;
an exhaust port of the reformer is connected with an air inlet of the first heat exchanger through the air inlet valve, a gas outlet of the first heat exchanger is connected with an inlet of the diaphragm pump through the exhaust valve, and an outlet of the diaphragm pump is connected with an inlet of the methanol fuel liquid inlet tank;
a first outlet of the radiator is connected with a cooling liquid inlet of the first heat exchanger through the cooling liquid valve, and a cooling liquid outlet of the first heat exchanger is connected with a first inlet of the radiator;
and a second outlet of the radiator is connected with a cooling liquid inlet of the second heat exchanger, and a cooling liquid outlet of the second heat exchanger is connected with a second inlet of the radiator.
Preferably, the liquid discharge and exhaust device of the fuel cell further comprises a first starting pump and a second starting pump; the first starting pump is arranged in a pipeline between a first outlet of the radiator and the cooling liquid valve; the second starting pump is arranged in a pipeline between a second outlet of the radiator and a cooling liquid inlet of the second heat exchanger.
Preferably, the liquid discharge and exhaust device of the fuel cell further comprises a cooling water tank; the cooling water tank is connected with a cooling water outlet of the second heat exchanger, and a cooling water inlet of the second heat exchanger is connected to a stack cooling water outlet of the fuel cell system.
Preferably, the liquid inlet valve, the liquid outlet valve, the air inlet valve, the air outlet valve and the coolant valve are all solenoid valves.
Compared with the prior art, the utility model discloses following beneficial effect has:
the embodiment of the utility model provides a liquid drainage and exhaust device of a fuel cell, which comprises a reformer, a liquid inlet valve, a liquid drainage valve, an air inlet valve, an exhaust valve, a first heat exchanger, a diaphragm pump, a methanol fuel liquid inlet box, a cooling liquid valve, a radiator and a second heat exchanger; a liquid outlet of the reformer is connected with a liquid inlet of the first heat exchanger through the liquid outlet valve, and a liquid outlet of the first heat exchanger is connected with an inlet of the methanol fuel liquid inlet tank through the liquid outlet valve; an exhaust port of the reformer is connected with an air inlet of the first heat exchanger through the air inlet valve, a gas outlet of the first heat exchanger is connected with an inlet of the diaphragm pump through the exhaust valve, and an outlet of the diaphragm pump is connected with an inlet of the methanol fuel liquid inlet tank; a first outlet of the radiator is connected with a cooling liquid inlet of the first heat exchanger through the cooling liquid valve, and a cooling liquid outlet of the first heat exchanger is connected with a first inlet of the radiator; and a second outlet of the radiator is connected with a cooling liquid inlet of the second heat exchanger, and a cooling liquid outlet of the second heat exchanger is connected with a second inlet of the radiator. Through the utility model discloses a fuel cell's flowing back exhaust apparatus can discharge the fuel liquid in the reformer and reforming gas mixture respectively, and need not to adopt inert gas or combustible gas to sweep to effectively simplified flowing back exhaust system's structure and improved flowing back exhaust system's security and reliability.
Drawings
Fig. 1 is a schematic structural view of a liquid discharge and gas exhaust device of a fuel cell according to an embodiment of the present invention;
wherein the reference numbers in the drawings of the specification are as follows:
1. a reformer; 2. a liquid inlet valve; 3. a drain valve; 4. an intake valve; 5. an exhaust valve; 6. a first heat exchanger; 7. a diaphragm pump; 8. a methanol fuel inlet tank; 9. a coolant valve; 10. a heat sink; 11. a second heat exchanger; 12. a first primer pump; 13. a second primer pump; 14. and a cooling water tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only 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.
Referring to fig. 1, a preferred embodiment of the present invention provides a liquid discharge and exhaust apparatus for a fuel cell, which includes a reformer 1, a liquid inlet valve 2, a liquid discharge valve 3, an air inlet valve 4, an exhaust valve 5, a first heat exchanger 6, a diaphragm pump 7, a methanol fuel liquid inlet tank 8, a coolant valve 9, a radiator 10, and a second heat exchanger 11;
a liquid outlet of the reformer 1 is connected with a liquid inlet of the first heat exchanger 6 through the liquid outlet valve 3, and a liquid outlet of the first heat exchanger 6 is connected with an inlet of the methanol fuel liquid inlet tank 8 through the liquid outlet valve 3;
an exhaust port of the reformer 1 is connected with an air inlet of the first heat exchanger 6 through the air inlet valve 4, a gas outlet of the first heat exchanger 6 is connected with an inlet of the diaphragm pump 7 through the exhaust valve 5, and an outlet of the diaphragm pump 7 is connected with an inlet of the methanol fuel liquid inlet tank 8;
a first outlet of the radiator 10 is connected with a cooling liquid inlet of the first heat exchanger 6 through the cooling liquid valve 9, and a cooling liquid outlet of the first heat exchanger 6 is connected with a first inlet of the radiator 10;
a second outlet of the radiator 10 is connected with a coolant inlet of the second heat exchanger 11, and a coolant outlet of the second heat exchanger 11 is connected with a second inlet of the radiator 10.
Preferably, the liquid discharge and exhaust device of the fuel cell further comprises a first starting pump 12 and a second starting pump 13; the first starting pump 12 is arranged in a pipeline between a first outlet of the radiator 10 and the coolant valve 9; the second starting pump 13 is arranged in a pipeline between the second outlet of the radiator 10 and the coolant inlet of the second heat exchanger 11.
Preferably, the liquid drainage and gas exhaust device of the fuel cell further comprises a cooling water tank 14; the cooling water tank 14 is connected with a cooling water outlet of the second heat exchanger 11, and a cooling water inlet of the second heat exchanger 11 is connected to a stack cooling water outlet of the fuel cell system.
Preferably, the liquid inlet valve 2, the liquid outlet valve 3, the air inlet valve 4, the air outlet valve 5 and the coolant valve 9 are all solenoid valves.
In order to better understand the liquid discharge and exhaust device of the fuel cell provided by the embodiments of the present invention, the following examples illustrate the operation process of the liquid discharge and exhaust device of the fuel cell:
in the embodiment of the present invention, during the normal shutdown of the system, the liquid in the reformer 1 is firstly discharged, and then the gas-liquid mixture in the reformer 1 is discharged, specifically:
firstly, the liquid inlet valve 2, the liquid outlet valve 3, the cooling liquid valve 9 and the second starting pump 13 are opened, so that the liquid fuel in the reformer 1 returns to the methanol fuel liquid inlet tank 8 through the liquid inlet valve 2 and the liquid outlet pipeline for recycling after the heat exchange is carried out on the liquid fuel in the first heat exchanger 6 through the liquid inlet valve 2 and the liquid outlet pipeline,
after liquid in the reformer 1 is exhausted, the liquid inlet valve 2 and the liquid outlet valve 3 are closed, the gas inlet valve 4 and the gas outlet valve 5 are opened, the diaphragm pump 7 is started, the gas-liquid mixture in the reformer 1 is exhausted in a vacuum mode, the gas-liquid mixture in the reformer 1 is exhausted to a gas recovery passage through the gas inlet valve 4, and is recovered to a methanol fuel liquid inlet box 8 through the gas outlet valve 5 and the diaphragm pump 7 after heat exchange with the first heat exchanger 6.
Cooling liquid recovery path: the cooling liquid in the radiator 10 is divided into two paths, wherein one path is conveyed to the first heat exchanger 6 through the first starting pump 12, exchanges heat with the gas-liquid mixture in the reformer 1 and then returns to the radiator 10; and the other path is conveyed into a second heat exchanger 11 through a second starting pump 13, exchanges heat with the cooling water of the fuel cell system electric pile and then returns to the radiator 10.
It should be noted that, the key points of the embodiments of the present invention are:
(1) the fuel liquid and the reformed mixed gas in the reformer 1 are respectively and independently discharged in stages, the negative pressure of the system can be maintained after the shutdown, the catalyst in the reformer 1 is prevented from being oxidized, soaked and pulverized, and the system safety and the service life of equipment are maintained.
(2) When the fuel cell system is shut down, the purposes of water drainage and air exhaust are realized, the purposes of fuel recovery and recycling are also realized, and the problem of discharge safety is also solved.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a fuel cell's flowing back exhaust apparatus can independently discharge fuel liquid and reforming gas mixture in reformer 1 stage by stage respectively, has realized fuel recovery and reuse's purpose, still solves simultaneously and discharges the safety problem, and is easy and simple to handle, safe and reliable has reduced the running cost simultaneously again.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (4)
1. The liquid discharge and exhaust device of the fuel cell is characterized by comprising a reformer, a liquid inlet valve, a liquid discharge valve, an air inlet valve, an exhaust valve, a first heat exchanger, a diaphragm pump, a methanol fuel liquid inlet box, a cooling liquid valve, a radiator and a second heat exchanger;
a liquid outlet of the reformer is connected with a liquid inlet of the first heat exchanger through the liquid outlet valve, and a liquid outlet of the first heat exchanger is connected with an inlet of the methanol fuel liquid inlet tank through the liquid outlet valve;
an exhaust port of the reformer is connected with an air inlet of the first heat exchanger through the air inlet valve, a gas outlet of the first heat exchanger is connected with an inlet of the diaphragm pump through the exhaust valve, and an outlet of the diaphragm pump is connected with an inlet of the methanol fuel liquid inlet tank;
a first outlet of the radiator is connected with a cooling liquid inlet of the first heat exchanger through the cooling liquid valve, and a cooling liquid outlet of the first heat exchanger is connected with a first inlet of the radiator;
and a second outlet of the radiator is connected with a cooling liquid inlet of the second heat exchanger, and a cooling liquid outlet of the second heat exchanger is connected with a second inlet of the radiator.
2. The liquid discharge and gas discharge apparatus for a fuel cell according to claim 1, further comprising a first start pump and a second start pump; the first starting pump is arranged in a pipeline between a first outlet of the radiator and the cooling liquid valve; the second starting pump is arranged in a pipeline between a second outlet of the radiator and a cooling liquid inlet of the second heat exchanger.
3. The liquid discharge and gas discharge apparatus for a fuel cell according to claim 1, further comprising a cooling water tank; the cooling water tank is connected with a cooling water outlet of the second heat exchanger, and a cooling water inlet of the second heat exchanger is connected to a stack cooling water outlet of the fuel cell system.
4. The liquid discharge and air exhaust device of a fuel cell according to claim 1, wherein the liquid inlet valve, the liquid discharge valve, the air inlet valve, the air exhaust valve, and the coolant valve are all solenoid valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021191492.4U CN212571057U (en) | 2020-06-23 | 2020-06-23 | Liquid-discharging and air-exhausting device of fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021191492.4U CN212571057U (en) | 2020-06-23 | 2020-06-23 | Liquid-discharging and air-exhausting device of fuel cell |
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| CN212571057U true CN212571057U (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021191492.4U Active CN212571057U (en) | 2020-06-23 | 2020-06-23 | Liquid-discharging and air-exhausting device of fuel cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900446A (en) * | 2020-06-23 | 2020-11-06 | 摩氢科技有限公司 | Liquid discharge and exhaust device of fuel cell and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900446A (en) * | 2020-06-23 | 2020-11-06 | 摩氢科技有限公司 | Liquid discharge and exhaust device of fuel cell and control method thereof |
| CN111900446B (en) * | 2020-06-23 | 2021-08-17 | 摩氢科技有限公司 | Liquid-discharging and air-exhausting device of fuel cell |
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