CN215869487U - Anti-freezing system for fuel cell valve and pipeline - Google Patents
Anti-freezing system for fuel cell valve and pipeline Download PDFInfo
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- CN215869487U CN215869487U CN202120995920.7U CN202120995920U CN215869487U CN 215869487 U CN215869487 U CN 215869487U CN 202120995920 U CN202120995920 U CN 202120995920U CN 215869487 U CN215869487 U CN 215869487U
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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 an anti-freezing system for a fuel cell valve and a pipeline, which comprises: an air supply subsystem and a hydrogen supply subsystem, the hydrogen supply subsystem comprising: the hydrogen outlet of the galvanic pile is connected with the water separator pipeline; the first gas outlet of the water separator is connected with a gas inlet pipeline of the ejector, the gas outlet of the ejector is butted with a hydrogen inlet of the galvanic pile, the second gas outlet of the water separator is connected with an external hydrogen discharge pipeline through a hydrogen discharge electromagnetic valve, and the water outlet of the water separator is connected with an external water discharge pipeline through a water discharge electromagnetic valve; the hydrogen discharge electromagnetic valve and the water discharge electromagnetic valve are both arranged in the heating tank; the air compressor is connected with the heating tank through an electromagnetic three-way valve. And sound-absorbing and heat-insulating materials are coated on the outer sides of the hydrogen discharge electromagnetic valve and the water discharge electromagnetic valve. The utility model can heat and purge the hydrogen discharge and water discharge pipeline and the valve of the fuel cell hydrogen supply system, ensure smooth hydrogen discharge and water discharge, and realize heat preservation and noise reduction of the hydrogen discharge and water discharge pipeline valve.
Description
Technical Field
The utility model belongs to the technical field of vehicle fuel cell maintenance, and particularly relates to an anti-freezing system for a fuel cell valve and a pipeline.
Background
With the rapid development of fuel cell vehicles, the requirements for the operating stability of fuel cells are higher and higher, and particularly, the normal operation of the fuel cells should be ensured in extreme climatic environments such as low temperature.
On one hand, because of the particularity of the working mechanism of the fuel cell, a gas supply system of the cathode of the cell contains nitrogen with higher concentration, while the anode does not contain nitrogen, and gases such as nitrogen can diffuse from the cathode to the anode under the action of concentration difference. Along with the continuous circulation accumulation of the anode gas, if the gas is discharged irregularly, the nitrogen concentration is increased, the hydrogen concentration is reduced, and the reaction efficiency and the system output power are affected, generally, the process of discharging the mixed gas of the hydrogen and the nitrogen of the anode is called as hydrogen discharge; on the other hand, water generated by the cathode reaction of the fuel cell continuously diffuses to the anode under the action of concentration gradient and the like, so that water accumulated by the anode is excessive, the anode needs to be drained periodically, the problem of flooding caused by excessive anode water is solved, the efficiency of the reactor is reduced due to flooding, the service life of the reactor is seriously damaged, and the process is called 'draining'.
In the low-temperature climate environment such as the north, the valves on the 'hydrogen discharge' and 'water discharge' pipelines can generate freezing and freezing blockage phenomena, even cause pipeline damage, so that the valves on the pipelines need to be subjected to ice melting and dredging treatment to ensure smooth 'hydrogen discharge' or 'water discharge'.
In the prior art, only the drainage valve on the 'drainage' pipeline is subjected to heating deicing treatment, and the water and ice removing work of the hydrogen discharge valve on the 'hydrogen discharge' pipeline is neglected; in addition, the basic heat preservation scheme for the pipeline valve is lacked in the prior art, so that certain waste is caused to heating and deicing.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model discloses an anti-freezing system for a valve and a pipeline of a fuel cell, which can heat and purge the hydrogen discharge and water discharge pipeline and the valve of a hydrogen supply system of the fuel cell, ensure smooth hydrogen discharge and water discharge and realize heat preservation and noise reduction of the valve of the hydrogen discharge and water discharge pipeline.
The technical scheme of the utility model is as follows by combining the attached drawings of the specification:
an antifreeze system for fuel cell valves and piping, comprising: an air supply subsystem and a hydrogen supply subsystem, the hydrogen supply subsystem comprising:
the hydrogen outlet 104 of the galvanic pile 1 is connected with the water separator 10 through a pipeline;
a first gas outlet of the water separator 10 is connected with a gas inlet pipeline of the ejector 14, a gas outlet of the ejector 14 is butted with a hydrogen inlet 101 of the electric pile 1, a second gas outlet of the water separator 10 is connected with an external hydrogen discharge pipeline through a hydrogen discharge electromagnetic valve 12, when the hydrogen discharge electromagnetic valve 12 is opened, separated gas is discharged through the hydrogen discharge electromagnetic valve 12, and when the hydrogen discharge electromagnetic valve 12 is closed, the separated gas flows back to the hydrogen inlet 101 of the electric pile 1 through the ejector 14;
the water outlet of the water separator 10 is connected with an external drainage pipeline through a drainage electromagnetic valve 13;
the hydrogen discharge electromagnetic valve 12 and the water discharge electromagnetic valve 13 are both arranged in the heating tank 11;
the air compressor 4 is connected with the heating tank 11 through a pipeline of the electromagnetic three-way valve 5.
Further, a temperature monitoring unit is installed in the heating tank 11;
the temperature monitoring unit is in signal connection with the electromagnetic three-way valve 5.
Furthermore, the outer sides of the hydrogen discharge electromagnetic valve 12 and the water discharge electromagnetic valve 13 are coated with sound-absorbing and heat-insulating materials.
Furthermore, the sound-absorbing and heat-insulating material is sponge.
Further, a check valve 17 is installed on a connection pipeline between the electromagnetic three-way valve 5 and the heating tank 11, and the check valve 17 is communicated from the electromagnetic three-way valve 5 to the heating tank 11.
Further, an external hydrogen source is piped to the pressure reducing valve 15 through piping;
the pressure reducing valve 15 is connected to the other inlet of the ejector 14 through a pipe.
Further, a pressure sensor 16 is installed on a connection line of the external hydrogen source and the pressure reducing valve 15.
Further, in the air supply subsystem:
the air filter 2, the air compressor 4, the electromagnetic three-way valve 5, the intercooler 6, the humidifier 7, the electronic throttle valve 8 and the hydrogen diluting device 9 are sequentially connected through pipelines;
the other outlet of the humidifier 7 is connected with an air inlet pipeline of the galvanic pile 1, and an air outlet 103 of the galvanic pile 1 is connected with the other inlet pipeline of the humidifier 7.
Furthermore, an air flow meter 3 is installed on a connecting pipeline between the air filter 2 and the air compressor 4.
Further, the pipes passing through the electronic throttle valve 8, the hydrogen discharge solenoid valve 12, the water discharge solenoid valve 13, and the heating tank 11 are connected to the hydrogen dilution device 9.
Compared with the prior art, the utility model has the beneficial effects that:
1. the anti-freezing system for the fuel cell valve and the pipeline provided by the utility model has the advantages that the high-temperature high-pressure gas compressed by the air compressor is utilized to purge the heating tank on the pipeline, the hydrogen discharge valve and the water discharge valve in the heating tank are heated under the purging of the high-temperature high-pressure gas, the freezing of the hydrogen discharge valve and the water discharge valve is effectively prevented, the smooth hydrogen discharge and water discharge is ensured, and the reliability of the system is improved.
2. According to the anti-freezing system for the fuel cell valve and the pipeline, the outer sides of the hydrogen exhaust valve and the water exhaust valve which are arranged in the heating tank are coated with the sound-absorbing heat-insulating material, so that on one hand, heat insulation of the valve is realized, the use frequency of high-temperature and high-pressure gas is reduced, and more energy is saved; on the other hand, the noise generated in the action process of the hydrogen exhaust valve and the water exhaust valve can be absorbed, and the NVH performance of the system is further improved.
Drawings
Fig. 1 is a schematic diagram of an antifreeze system for fuel cell valves and piping according to the present invention.
In the figure:
1-galvanic pile, 2-air filter, 3-air flow meter,
4-an air compressor, 5-an electromagnetic three-way valve, 6-an intercooler,
7-a humidifier, 8-an electronic throttle valve, 9-a hydrogen diluting device,
10-a water separator, 11-a heating tank, 12-a hydrogen discharge electromagnetic valve,
13-a water discharge electromagnetic valve, 14-an ejector, 15-a pressure reducing valve,
16-pressure sensor, 17-one-way valve;
101-hydrogen inlet, 102-air inlet, 103-air outlet,
104-hydrogen outlet.
Detailed Description
For clearly and completely describing the technical scheme and the specific working process thereof, the specific implementation mode of the utility model is as follows by combining the attached drawings of the specification:
in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
This embodiment discloses a system of preventing frostbite for fuel cell valve and pipeline, this system can sweep in arranging the heating jar on the pipeline and, effectively prevent to heat the interior hydrogen valve of jar and the freezing of drainage valve, and can keep warm to the valve to reduce the produced noise of valve action.
As shown in fig. 1, the anti-freezing system for the fuel cell valve and pipeline according to the present invention is composed of two subsystems, respectively: an air supply subsystem and a hydrogen supply subsystem.
The air supply subsystem includes: the system comprises an air filter 2, an air flow meter 3, an air compressor 4, an electromagnetic three-way valve 5, an intercooler 6, a humidifier 7, an electronic throttle valve 8 and a hydrogen diluting device 9; wherein:
the air filter 2 is connected with an air inlet of the air compressor 4 through a pipeline so as to realize that the filtered clean air in the morning is sent into the air compressor 4 to be compressed at high pressure; the air flow meter 3 is installed on a connecting pipeline between the air filter 2 and the pipeline and the air compressor 4 so as to detect the flow of air flowing into the air compressor 4; an air outlet of the air compressor 4 is connected with a first interface of the electromagnetic three-way valve 5 through a pipeline, and a second structure of the electromagnetic three-way valve 5 is sequentially connected with first inlets of the intercooler 6 and the humidifier 7 through pipelines so as to sequentially realize heat exchange and humidification treatment; the first outlet of the humidifier 7 is connected with the inlet 102 of the galvanic pile 1 through a pipeline, so that air for the galvanic pile reaction is fed;
an air outlet 103 of the galvanic pile 1 is connected with a second inlet of a humidifier 7 through a pipeline, a second outlet of the humidifier 7 is connected with the electronic throttle valve 8 through a pipeline, and the flow of gas flowing through is controlled by controlling the opening of the electronic throttle valve 8; the electronic throttle valve 8 is connected with the hydrogen diluting device 9 through a pipeline, and gas or liquid flowing through the hydrogen diluting device 9 is diluted and then discharged.
The hydrogen supply subsystem includes: a pressure sensor 16, a pressure reducing valve 15, an ejector 14, a water separator 10, a one-way valve 17, an electromagnetic three-way valve 5, a hydrogen discharge electromagnetic valve 12, a water discharge electromagnetic valve 13 and a hydrogen diluting device 9; wherein:
the external hydrogen source is connected with the pressure reducing valve 15 through a pipeline in a pipeline manner so as to realize the pressure reduction of the inflow hydrogen; the pressure sensor 16 is installed on a connection line of the external hydrogen source and the pressure reducing valve 15 to detect the pressure of hydrogen flowing into the hydrogen supply subsystem; the pressure reducing valve 15 is connected with a first inlet of the ejector 14 through a pipeline, and an outlet of the ejector 14 is butted with a hydrogen inlet 101 of the galvanic pile 1 so as to realize hydrogen injection;
the hydrogen outlet 104 of the electric pile 1 is connected with the water separator 10 through a pipeline, and water-gas separation is realized through the water separator 10; after the water separator 10 performs water-gas separation, a first gas outlet of the water separator 10 is connected with a second inlet of the ejector 14 through a pipeline, a second gas outlet of the water separator 10 is connected with a hydrogen discharge electromagnetic valve 12 through a pipeline and then is in line connection with the hydrogen diluting device 9 through a pipeline, and the hydrogen discharge electromagnetic valve 12 is used for controlling the discharge of a mixed gas of separated gaseous water, hydrogen and nitrogen; the water outlet of the water separator 10 is connected with a water discharge electromagnetic valve 13 through a pipeline and then connected with the hydrogen diluting device 9 through a pipeline, and the hydrogen discharge electromagnetic valve 12 is used for controlling the discharge of the separated liquid water;
the hydrogen discharge electromagnetic valve 12 and the water discharge electromagnetic valve 13 are both arranged in a heating tank 11, and the outer sides of the hydrogen discharge electromagnetic valve 12 and the water discharge electromagnetic valve 13 are coated with sound-absorbing heat-preserving material layers, so that on one hand, the heat preservation of the hydrogen discharge electromagnetic valve 12 and the water discharge electromagnetic valve 13 can be realized, and on the other hand, the noise generated when the hydrogen discharge electromagnetic valve 12 and the water discharge electromagnetic valve 13 act can be absorbed, so that the noise reduction is realized; the sound-absorbing and heat-insulating material layer is made of sponge;
a third interface of the electromagnetic three-way valve 5 is connected with an inlet of a heating tank 11 through a pipeline, and an outlet of the heating tank 11 is connected with the hydrogen diluting device 9 through a pipeline; a one-way valve 17 is arranged on a connecting pipeline between the electromagnetic three-way valve 5 and the heating tank 11, and the one-way valve 17 is used for communicating the electromagnetic three-way valve 5 to the heating tank 11 so as to prevent gas from flowing backwards;
the temperature monitoring unit is installed to heating tank 11 inboard, temperature monitoring unit and 5 signal connection of electromagnetism three-way valve, when the temperature monitoring unit detects that the temperature in the heating tank 1 is less than preset the temperature, judge that there is the risk of freezing in the hydrogen discharge solenoid valve 12 in the heating tank 1 and the drainage solenoid valve 13, at this moment, control electromagnetism three-way valve 5 action, the third interface that will be connected with heating tank 11 is opened, high-pressure high-temperature gas after the compression of air compressor machine 4 flows out through the third interface of electromagnetism three-way valve 5, behind check valve 17, get into heating tank 11, blow down the hydrogen discharge solenoid valve 12 in the heating tank 11 and drainage solenoid valve 13, realize rising temperature and deicing and dewatering, and the gas after blowing down flows out from heating tank 11, discharge after the dilution processing of hydrogen diluting device 9.
In the above-mentioned hydrogen supply subsystem, the hydrogen discharge solenoid valve 12 and the water discharge solenoid valve 13 will be opened or closed according to the preset frequency, when the hydrogen discharge solenoid valve 12 is opened, the mixed gas separated by the water separator 10 is discharged out of the system through the hydrogen discharge solenoid valve 12; when the hydrogen discharge electromagnetic valve 12 is closed, the mixed gas separated by the water separator 10 flows back to the hydrogen inlet of the electric pile 1 through the ejector 14, and then the hydrogen return is realized.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An antifreeze system for fuel cell valves and piping, comprising: the air supply subsystem and the hydrogen supply subsystem are characterized in that:
in the hydrogen supply subsystem:
a hydrogen outlet (104) of the galvanic pile (1) is connected with a water separator (10) through a pipeline;
a first gas outlet of the water separator (10) is connected with a gas inlet pipeline of the ejector (14), a gas outlet of the ejector (14) is butted with a hydrogen inlet (101) of the electric pile (1), a second gas outlet of the water separator (10) is connected with an external hydrogen discharge pipeline through a hydrogen discharge electromagnetic valve (12), when the hydrogen discharge electromagnetic valve (12) is opened, separated gas is discharged through the hydrogen discharge electromagnetic valve (12), and when the hydrogen discharge electromagnetic valve (12) is closed, the separated gas flows back to the hydrogen inlet (101) of the electric pile (1) through the ejector (14);
the water outlet of the water separator (10) is connected with an external drainage pipeline through a drainage electromagnetic valve (13);
the hydrogen discharge electromagnetic valve (12) and the water discharge electromagnetic valve (13) are both arranged in the heating tank (11);
the air compressor (4) is connected with the heating tank (11) through a pipeline of an electromagnetic three-way valve (5).
2. The antifreeze system for fuel cell valves and piping according to claim 1, wherein:
a temperature monitoring unit is arranged in the heating tank (11);
the temperature monitoring unit is in signal connection with the electromagnetic three-way valve (5).
3. The antifreeze system for fuel cell valves and piping according to claim 1, wherein:
the outer sides of the hydrogen discharge electromagnetic valve (12) and the water discharge electromagnetic valve (13) are coated with sound-absorbing heat-insulating materials.
4. The antifreeze system for fuel cell valves and piping according to claim 3, wherein:
the sound-absorbing and heat-insulating material is sponge.
5. The antifreeze system for fuel cell valves and piping according to claim 1, wherein:
install check valve (17) on the connecting pipeline of electromagnetic three-way valve (5) and heating jar (11), check valve (17) are electromagnetic three-way valve (5) and switch on to heating jar (11).
6. The antifreeze system for fuel cell valves and piping according to claim 1, wherein:
the external hydrogen source is connected with the pressure reducing valve (15) through a pipeline;
the pressure reducing valve (15) is connected with the other inlet of the ejector (14) through a pipeline.
7. The antifreeze system for fuel cell valves and piping according to claim 6, wherein:
and a pressure sensor (16) is arranged on a connecting pipeline of the external hydrogen source and the pressure reducing valve (15).
8. The antifreeze system for fuel cell valves and piping according to any one of claims 1 to 7, wherein:
in the air supply subsystem:
the air filter (2), the air compressor (4), the electromagnetic three-way valve (5), the intercooler (6), the humidifier (7), the electronic throttle valve (8) and the hydrogen diluting device (9) are sequentially connected through pipelines;
the other outlet of the humidifier (7) is connected with an air inlet pipeline of the galvanic pile (1), and an air outlet (103) of the galvanic pile (1) is connected with the other inlet pipeline of the humidifier (7).
9. The antifreeze system for fuel cell valves and piping according to claim 8, wherein:
and an air flow meter (3) is arranged on a connecting pipeline between the air filter (2) and the air compressor (4).
10. The antifreeze system for fuel cell valves and piping according to claim 8, wherein:
and pipelines which flow through the electronic throttle valve (8), the hydrogen discharge electromagnetic valve (12), the water discharge electromagnetic valve (13) and the heating tank (11) are connected with the hydrogen diluting device (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120995920.7U CN215869487U (en) | 2021-05-11 | 2021-05-11 | Anti-freezing system for fuel cell valve and pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120995920.7U CN215869487U (en) | 2021-05-11 | 2021-05-11 | Anti-freezing system for fuel cell valve and pipeline |
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| CN215869487U true CN215869487U (en) | 2022-02-18 |
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| CN202120995920.7U Active CN215869487U (en) | 2021-05-11 | 2021-05-11 | Anti-freezing system for fuel cell valve and pipeline |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361527A (en) * | 2022-03-18 | 2022-04-15 | 国家电投集团氢能科技发展有限公司 | Fuel cell purge system and purge method |
| CN115084602A (en) * | 2022-08-23 | 2022-09-20 | 深圳市南科动力科技有限公司 | Hydrogen emission treatment system and fuel cell |
| CN116706148A (en) * | 2023-08-07 | 2023-09-05 | 深圳市氢蓝时代动力科技有限公司 | Fuel cell cold start system |
-
2021
- 2021-05-11 CN CN202120995920.7U patent/CN215869487U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361527A (en) * | 2022-03-18 | 2022-04-15 | 国家电投集团氢能科技发展有限公司 | Fuel cell purge system and purge method |
| CN115084602A (en) * | 2022-08-23 | 2022-09-20 | 深圳市南科动力科技有限公司 | Hydrogen emission treatment system and fuel cell |
| CN115084602B (en) * | 2022-08-23 | 2022-11-15 | 深圳市南科动力科技有限公司 | Hydrogen emission treatment system and fuel cell |
| CN116706148A (en) * | 2023-08-07 | 2023-09-05 | 深圳市氢蓝时代动力科技有限公司 | Fuel cell cold start system |
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