CN113270619A - System for reducing concentration of tail-exhausted hydrogen of fuel cell system - Google Patents
System for reducing concentration of tail-exhausted hydrogen of fuel cell system Download PDFInfo
- Publication number
- CN113270619A CN113270619A CN202110406320.7A CN202110406320A CN113270619A CN 113270619 A CN113270619 A CN 113270619A CN 202110406320 A CN202110406320 A CN 202110406320A CN 113270619 A CN113270619 A CN 113270619A
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- output
- input
- throttle valve
- tail
- valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000001257 hydrogen Substances 0.000 title claims abstract description 35
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 35
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000000446 fuel Substances 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000003584 silencer Effects 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
-
- 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
Abstract
The invention provides a system for reducing the concentration of tail-exhausted hydrogen of a fuel cell system, wherein the output end of an air compressor is connected with the input end of an intercooler, the output end of the intercooler is connected with the input end of an electronic three-way valve, the first output end and the second output end of the electronic three-way valve are respectively connected with the first input end of a humidifier and the input end of a back pressure valve, the first output end of the humidifier is connected with the input end of a first throttle valve, the output end of the first throttle valve is connected with the input end of a galvanic pile, the first output end of the galvanic pile is connected with the input end of a second throttle valve, the second output end of the galvanic pile is connected with the input end of a gas-water separator, the output end of the second throttle valve is connected with the second input end of the humidifier, the second output end of the humidifier is connected with the input end of the back pressure valve, and the output ends of the gas-water separator are both connected with a silencer. The invention has the following effects: effectively reduces the concentration of tail-exhausted hydrogen in the fuel cell system and improves the safety of the hydrogen energy automobile.
Description
Technical Field
The invention relates to the field of hydrogen energy automobiles, in particular to a system for reducing the concentration of tail exhaust hydrogen of a fuel cell system.
Background
In a fuel cell system, the safety problem of tail exhaust hydrogen concentration is widely concerned, the current solution is to use a water-gas separator to separate water from gas in the discharge of an anode, because water needs to be discharged, partial hydrogen can be discharged along with the discharged water, once the tail exhaust hydrogen concentration exceeds the standard, no effective solution is available, and potential safety hazard exists.
Disclosure of Invention
In order to solve the problems, the invention provides a system for reducing the concentration of hydrogen discharged from the tail of a fuel cell system, which comprises an air filter, a flow meter, an air compressor, an intercooler, an electronic three-way valve, a humidifier, a first throttle valve, a second throttle valve, a back pressure valve, a silencer, a gas-water separator and a galvanic pile;
the one end of flowmeter is connected to air cleaner, the input of air compressor machine is connected to the other end of flowmeter, the input of intercooler is connected to the output of air compressor machine, the input of electron three-way valve is connected to the output of intercooler, the first input and the back pressure valve input of humidifier are connected respectively to the first output and the second output of electron three-way valve, the input of throttle valve one is connected to the first output of throttle valve, the input of second throttle valve is connected to the first output of galvanic pile, the input of deareator is connected to the second output of galvanic pile, the second input of humidifier is connected to the output of throttle valve two, the input of back pressure valve is connected to the second output of humidifier, the muffler is all connected to the output of back pressure valve and deareator.
Further, the system further comprises a first temperature and pressure integrated sensor and a second temperature and pressure integrated sensor, wherein the first temperature and pressure integrated sensor is arranged between the first throttle valve and the galvanic pile, the second temperature and pressure integrated sensor is arranged between the second throttle valve and the galvanic pile, the first temperature and pressure integrated sensor is used for detecting the gas pressure and temperature output by the first throttle valve, and the second temperature and pressure integrated sensor is used for detecting the gas pressure and temperature output by the first output end of the galvanic pile.
Further, the system also comprises a pressure sensor, wherein the pressure sensor is arranged between the galvanic pile and the gas-water separator and is used for detecting the pressure of the hydrogen output by the second output end of the galvanic pile.
Further, the silencer is used for reducing noise generated when an engine of a hydrogen energy automobile works.
Further, the backpressure valve is used for adjusting outlet backpressure of the galvanic pile and increasing pile inlet pressure.
Further, the gas-water separator has 2 output ends; one output end is connected with a silencer and is used for discharging nitrogen and water; the other output end is connected with a tail discharge pipe and is used for discharging hydrogen.
The technical scheme provided by the invention has the beneficial effects that: the hydrogen-energy automobile tail gas exhaust device has the advantages of low cost and simple structure, effectively reduces the concentration of tail exhaust hydrogen in a fuel cell system, and improves the safety of a hydrogen-energy automobile.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a block diagram of a system for reducing the tail-out hydrogen concentration of a fuel cell system in an embodiment of the present invention.
The labels in FIG. 1 are illustrated as follows:
1. an air filter; 2. a flow meter; 3. an air compressor; 4. an intercooler; 5. an electronic three-way valve; 6. a humidifier; 7. a first throttle valve; 8. a temperature and pressure integrated sensor I; 9. a second temperature and pressure integrated sensor; 10. a second throttle valve; 11. a back pressure valve; 12. a muffler; 13. a pressure sensor; 14. a gas-water separator; 34. a galvanic pile; 35. the outside atmosphere.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides a system for reducing the concentration of tail exhaust hydrogen of a fuel cell system.
Referring to fig. 1, fig. 1 is a structural diagram of a system for reducing the concentration of hydrogen discharged from the tail gas of a fuel cell system according to an embodiment of the present invention, which specifically includes: the system comprises an air filter 1, a flowmeter 2, an air compressor 3, an intercooler 4, an electronic three-way valve 5, a humidifier 6, a first throttle valve 7, a first temperature and pressure integrated sensor 8, a second temperature and pressure integrated sensor 9, a second throttle valve 10, a backpressure valve 11, a silencer 12, a pressure sensor 13, a gas-water separator 14 and a galvanic pile 34.
The output end of the air filter 1 is connected with one end of the flow meter 2, the other end of the flow meter 2 is connected with the input end of the air compressor 3, the output end of the air compressor 3 is connected with the input end of the intercooler 4, the output end of the intercooler 4 is connected with the input end of the electronic three-way valve 5, the first output end and the second output end of the electronic three-way valve 5 are respectively connected with the first input end of the humidifier 6 and the input end of the back pressure valve 11, the first output end of the humidifier 6 is connected with the input end of the first throttle valve 7, the first output end of the first throttle valve 7 is connected with the input end of the pile 34, the second output end of the pile 34 is connected with the input end of the second throttle valve 10, the output end of the second throttle valve 10 is connected with the second input end of the humidifier 6, the second output end of the humidifier 6 is connected with the input end of the back pressure valve 11, and the output ends of the back pressure valve 11 and the air-water separator 14 are connected with the silencer 12. The input to the air filter 1 and the output of the silencer 12 are both ambient atmosphere 35.
The first temperature and pressure integrated sensor 8 is arranged between the first throttle valve 7 and the electric pile 34, the second temperature and pressure integrated sensor 9 is arranged between the second throttle valve 10 and the electric pile 34, the first temperature and pressure integrated sensor 8 is used for detecting the pressure and temperature of the gas output by the first throttle valve 7, and the second temperature and pressure integrated sensor 9 is used for detecting the pressure and temperature of the gas output by the first output end of the electric pile 34. The pressure sensor 13 is disposed between the galvanic pile 34 and the gas-water separator 14, and is used for detecting the gas pressure output by the second output end of the galvanic pile 34. The water and nitrogen are discharged from the output of the gas-water separator connected to the silencer, and the other output 141 of the gas-water separator 14 is connected to the tail pipe for discharging hydrogen. The back pressure valve is used for adjusting the outlet back pressure of the galvanic pile and increasing the pile inlet pressure. The silencer is used for reducing noise generated when an engine of a hydrogen energy automobile works.
The working principle is as follows:
when the hydrogen concentration in the tail exhaust pipe detected by the tail exhaust hydrogen concentration sensor exceeds the standard, a branch of an electronic three-way valve 5 in the system is automatically opened, and air of an air compressor 3 enters the electric pile 34 to dilute the hydrogen concentration in the tail exhaust pipe and blow in the external atmosphere.
During low-temperature cold start (-30 ℃) and low-temperature storage tests, if the back pressure valve 11 freezes, the other branch of the electronic three-way valve 5 can be opened, and the back pressure valve 11 is unfrozen by utilizing the high-temperature air temperature (72 ℃) output by the intercooler 4.
When the hydrogen energy automobile idles, the opening degree of the electronic three-way valve 5 is adjusted, so that part of air enters the electric pile 34, and the other part of air is directly blown into the external atmosphere 35. The electricity that makes the air that gets into galvanic pile 34 can react with hydrogen and produce just satisfies the consumption of other spare parts, realizes 0 output to the lithium cell to realize the 0 output of idle speed, also reduced the hydrogen concentration in the tail calandria simultaneously.
The invention has the beneficial effects that: the hydrogen-energy automobile tail gas exhaust device has the advantages of low cost and simple structure, effectively reduces the concentration of tail exhaust hydrogen in a fuel cell system, and improves the safety of a hydrogen-energy automobile.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A system for reducing the concentration of tail bleed hydrogen in a fuel cell system, characterized by: the system comprises an air filter, a flow meter, an air compressor, an intercooler, an electronic three-way valve, a humidifier, a first throttle valve, a second throttle valve, a back pressure valve, a silencer, a gas-water separator and a galvanic pile;
the one end of flowmeter is connected to air cleaner, the input of air compressor machine is connected to the other end of flowmeter, the input of intercooler is connected to the output of air compressor machine, the input of electron three-way valve is connected to the output of intercooler, the first input and the back pressure valve input of humidifier are connected respectively to the first output and the second output of electron three-way valve, the input of throttle valve one is connected to the first output of throttle valve, the input of second throttle valve is connected to the first output of galvanic pile, the input of deareator is connected to the second output of galvanic pile, the second input of humidifier is connected to the output of throttle valve two, the input of back pressure valve is connected to the second output of humidifier, the muffler is all connected to the output of back pressure valve and deareator.
2. A system for reducing the tail-out hydrogen concentration of a fuel cell system according to claim 1, wherein: the system further comprises a first temperature and pressure integrated sensor and a second temperature and pressure integrated sensor, wherein the first temperature and pressure integrated sensor is arranged between the first throttle valve and the galvanic pile, the second temperature and pressure integrated sensor is arranged between the second throttle valve and the galvanic pile, the first temperature and pressure integrated sensor is used for detecting the gas pressure and temperature output by the first throttle valve, and the second temperature and pressure integrated sensor is used for detecting the gas pressure and temperature output by the first output end of the galvanic pile.
3. A system for reducing the tail-out hydrogen concentration of a fuel cell system according to claim 1, wherein: the system also comprises a pressure sensor which is arranged between the galvanic pile and the gas-water separator and used for detecting the gas pressure output by the second output end of the galvanic pile.
4. A system for reducing the tail-out hydrogen concentration of a fuel cell system according to claim 1, wherein: the silencer is used for reducing noise generated when an engine of a hydrogen energy automobile works.
5. A system for reducing the tail-out hydrogen concentration of a fuel cell system according to claim 1, wherein: the back pressure valve is used for adjusting the outlet back pressure of the galvanic pile and increasing the pile inlet pressure.
6. A system for reducing the tail-out hydrogen concentration of a fuel cell system according to claim 1, wherein: the gas-water separator is provided with 2 output ends; one output end is connected with a silencer and is used for discharging nitrogen and water; the other output end is connected with a tail discharge pipe and is used for discharging hydrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110406320.7A CN113270619A (en) | 2021-04-15 | 2021-04-15 | System for reducing concentration of tail-exhausted hydrogen of fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110406320.7A CN113270619A (en) | 2021-04-15 | 2021-04-15 | System for reducing concentration of tail-exhausted hydrogen of fuel cell system |
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| Publication Number | Publication Date |
|---|---|
| CN113270619A true CN113270619A (en) | 2021-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110406320.7A Pending CN113270619A (en) | 2021-04-15 | 2021-04-15 | System for reducing concentration of tail-exhausted hydrogen of fuel cell system |
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2021
- 2021-04-15 CN CN202110406320.7A patent/CN113270619A/en active Pending
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| PB01 | Publication | ||
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Application publication date: 20210817 |