CN212719217U - Gas supply device for fuel cell system - Google Patents

Abstract

The utility model discloses a fuel cell system's air feeder, this air feeder are including supplying nitrogen route, hydrogen supply route and gas treatment route, the gas treatment route is including the steady voltage branch road that is used for gaseous decompression branch road and is used for gaseous steady voltage, the air inlet of decompression branch road with supply the nitrogen route with the gas outlet intercommunication of hydrogen supply route, the gas outlet of decompression branch road can with be surveyed the part intercommunication, the air inlet of steady voltage branch road with the air inlet or the middle part intercommunication of decompression branch road, the gas outlet of steady voltage branch road with the gas outlet intercommunication of decompression branch road. The utility model discloses be favorable to being surveyed the part air feed for the different pressure values of demand.

Description

Gas supply device for fuel cell system

Technical Field

The utility model relates to a fuel cell technical field, concretely relates to fuel cell system's air feeder.

Background

The fuel cell is a high-efficiency power generation device, has the advantages of high power density, high energy conversion efficiency, quiet working process and the like, and is successfully applied in a certain range.

The proton exchange membrane fuel cell has good working performance at low temperature, is a development hotspot at present, and is widely concerned at home and abroad. The hydrogen and nitrogen are needed in the research and development and production processes of the proton exchange membrane fuel cell stack and the system, the flow and pressure requirements of the hydrogen and the nitrogen are wide, the air outlet pressure of the existing air supply device is generally a single numerical value, and the use requirements of the research and development and production of the proton exchange membrane fuel cell stack and the system cannot be met.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an air supply device for a fuel cell system, which solves the problem of single air pressure value of the existing air supply device.

In order to solve the technical problem, the utility model provides a fuel cell system's air feeder, this air feeder is including supplying nitrogen route, hydrogen supply route and gas treatment route, the gas treatment route is including the steady voltage branch road that is used for gaseous decompression branch road and is used for gaseous steady voltage, the air inlet of decompression branch road with supply the nitrogen route with the gas outlet intercommunication of hydrogen supply route, the gas outlet of decompression branch road can with be surveyed the part intercommunication, the air inlet of steady voltage branch road with the air inlet or the middle part intercommunication of decompression branch road, the gas outlet of steady voltage branch road with the gas outlet intercommunication of decompression branch road.

Preferably, the nitrogen supply passage comprises a first air inlet interface, a first filter and a first one-way valve which are sequentially connected through a pipeline, and an air outlet of the first one-way valve is communicated with an air inlet of the pressure reduction branch; the hydrogen supply passage comprises a second air inlet interface, a second filter and a second one-way valve which are sequentially connected through a pipeline, and an air outlet of the second one-way valve is communicated with an air inlet of the pressure reduction branch.

Preferably, the pressure reducing branch comprises a first ball valve, a first pressure reducing valve, a first electromagnetic valve, a first needle valve, a first pressure switch, a second ball valve and a first air outlet interface which are sequentially connected through pipelines, and an air inlet of the first ball valve is communicated with an air outlet of the first one-way valve and an air outlet of the second one-way valve respectively.

Preferably, the pressure stabilizing branch comprises a third ball valve and a first safety valve which are sequentially connected through a pipeline, an air inlet of the third ball valve is respectively communicated with air outlets of the first one-way valve and the second one-way valve, and an air outlet of the first safety valve is communicated with an air inlet of the first air outlet connector.

Preferably, the gas supply device further comprises a test passage, the test passage comprises a fourth ball valve, a mass flow meter, a fifth ball valve and a second gas outlet interface which are sequentially connected through pipelines, and a gas inlet of the fourth ball valve is respectively communicated with a gas outlet of the first one-way valve and a gas outlet of the second one-way valve.

Preferably, the test passage further comprises a sixth ball valve, an air inlet of the sixth ball valve is communicated with a pipeline positioned behind the first needle valve, and an air outlet of the sixth ball valve is communicated with an air inlet of the mass flow meter.

Preferably, the pressure reducing branch comprises a first branch and a second branch, the gas inlet of the first branch is communicated with the gas outlet of the nitrogen supply passage, and the gas inlet of the second branch is communicated with the gas outlet of the hydrogen supply passage.

Preferably, the first branch and the second branch respectively comprise a second pressure reducing valve, a third filter, a third pressure reducing valve, a second safety valve, a second needle valve, a second electromagnetic valve, a second pressure switch and a third air outlet connector which are sequentially connected through pipelines, and air inlets of the second pressure reducing valves in the first branch and the second branch are communicated with air outlets of the nitrogen supply passage and the hydrogen supply passage in a one-to-one correspondence mode.

Preferably, the pressure reducing branch further comprises a seventh ball valve and an eighth ball valve, two ends of the seventh ball valve are respectively communicated with the first branch and the second branch, and two ports of the seventh ball valve are respectively located behind the second pressure switch in the first branch and the second branch; the eighth ball valve is located in the second branch, an air inlet of the eighth ball valve is located behind a port of the seventh ball valve, and the air inlet of the eighth ball valve is communicated with an air inlet of the third air outlet interface.

Preferably, the pressure stabilizing branch comprises a ninth ball valve, a tenth ball valve and an eleventh ball valve, an air inlet of the ninth ball valve is communicated with an air outlet of the third one-way valve in the first branch, an air inlet of the tenth ball valve is communicated with an air outlet of the third one-way valve in the second branch, an air inlet of the eleventh ball valve is respectively communicated with air outlets of the ninth ball valve and the tenth ball valve, and an air outlet of the eleventh ball valve is communicated with an air inlet of the third air outlet port in the first branch.

The embodiment of the utility model provides a pair of fuel cell system's air feeder handles the gas of output through setting up decompression branch road and steady voltage branch road to provide the gas of different pressure values to being surveyed the part. Compared with the prior art, the utility model discloses be favorable to being surveyed the part air feed for the different pressure values of demand.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a gas supply device of a fuel cell system according to the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of a gas supply device of a fuel cell system according to the present invention;

fig. 3 is a schematic structural diagram of a gas supply device of a fuel cell system according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of another embodiment of the first branch and the second branch shown in fig. 3.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

The utility model provides a fuel cell system's air feeder, as shown in FIG. 1, this air feeder is including supplying nitrogen route 100, hydrogen supply route 200 and gas treatment route 300, gas treatment route 300 is including the steady voltage branch road 320 that is used for gaseous decompression branch road 310 and is used for gaseous steady voltage of being used for gaseous decompression, decompression branch road 310 the air inlet with supply nitrogen route 100 with hydrogen supply route 200's gas outlet intercommunication, decompression branch road 310's gas outlet can with be surveyed the part intercommunication, steady voltage branch road 320 the air inlet with decompression branch road 310's air inlet or middle part intercommunication, steady voltage branch road 320 the gas outlet with decompression branch road 310's gas outlet intercommunication.

In this embodiment, the nitrogen supply path 100 is connected to a nitrogen gas source, and the hydrogen supply path 200 is connected to a hydrogen gas source, so that the nitrogen gas and the hydrogen gas can be conveniently supplied to the fuel cell system or each component through the nitrogen supply path 100 and the hydrogen supply path 200, respectively, and the nitrogen supply path 100 and the hydrogen supply path 200 may be in the form of a pipe directly connecting the gas source and the gas processing path 300, or a pipe having a switching component disposed therein. Meanwhile, in order to conveniently process the pressure of the gas, the gas processing path 300 includes a pressure reducing branch 310 and a pressure stabilizing branch 320. Wherein, the gas inlet of the pressure reducing branch 310 is communicated with the gas outlets of the nitrogen supply passage 100 and the hydrogen supply passage 200, and the gas outlet of the pressure reducing branch 310 can be communicated with the tested component, so as to provide gas with a specific pressure value for the tested component; the pressure stabilizing branch 320 is used for outputting the gas output by the nitrogen supply passage 100 or the hydrogen supply passage 200 and the gas decompressed by the decompressing branch 310 to the tested component (i.e. directly outputting the gas without processing), so that the gas with different pressure values can be provided for the tested component, and two functions of hydrogen supply and nitrogen purging are provided. In this embodiment, the pressure reducing branch 310 and the pressure stabilizing branch 320 are arranged to process the output gas, so as to provide gas with different pressure values for the tested component, thereby expanding the application range of the gas supply device, i.e. supplying gas for the tested component requiring different pressure values.

In a preferred embodiment, as shown in fig. 2, in order to facilitate the supply of the nitrogen supply passage 100A, the nitrogen supply passage 100A includes a first air inlet port 110A, a first filter 120A and a first check valve 130A which are connected in sequence by a pipeline. Wherein, first air inlet interface 110A communicates with nitrogen gas source, and first air inlet interface 110A is preferred to quick detach connects to conveniently supply the dismouting of nitrogen passageway 100A and nitrogen gas source, first check valve 130A communicates with the air inlet of decompression branch road 310A through the pipeline simultaneously. In order to facilitate the gas supply of the hydrogen supply passage 200A, the hydrogen supply passage 200A includes a second gas inlet interface 210A, a second filter 220A and a second check valve 230A, which are connected in sequence, preferably, the second gas inlet interface 210A is a quick-release joint, so as to facilitate the disassembly and assembly of the hydrogen supply passage 200A and the hydrogen gas source, and meanwhile, the second check valve 230A is communicated with the gas inlet of the pressure reduction branch 310A through a pipeline. In this embodiment, the first check valve 130A and the second check valve 230A are provided to prevent the gas in the nitrogen supply passage 100A and the hydrogen supply passage 200A from flowing back, and the first filter 120A and the second filter 220A3 are provided to remove impurities in the gas, thereby improving the cleanliness of the output gas.

In a preferred embodiment, as shown in fig. 2, to reduce the pressure of the gas, the pressure reducing branch 310A in the gas processing channel 300A includes a first ball valve 311A, a first pressure reducing valve 312A, a first solenoid valve 313A, a first needle valve 314A, a first pressure switch 315A, a second ball valve 316A and a first outlet port 317A, which are connected in sequence through a pipeline. The air inlet of the first ball valve 311A is respectively communicated with the air outlets of the first one-way valve 130A and the second one-way valve 230A, the first air outlet port 317A is used for being communicated with a tested component, and preferably, the first air outlet port 317A is a quick-release connector, so that the first air outlet port 317A and the air inlet of the tested component can be conveniently and quickly disassembled. The ball valve is used for controlling an air supply switch of the pressure reduction branch; the electromagnetic valve and the pressure switch are linked to realize an overpressure protection function, so that the dangerous condition caused by overhigh gas pressure is avoided. Of course, a monitoring device for detecting the air pressure may be further disposed on the pressure reducing branch 310A, for example, a first pressure gauge 318A is disposed between the first solenoid valve 313A and the first needle valve 314A, so as to facilitate real-time understanding of the pressure value of the output air of the pressure reducing branch 310A.

In a preferred embodiment, as shown in fig. 2, the pressure stabilizing branch 320 in the gas processing channel 300A includes a third ball valve 321A and a first relief valve 322A connected in sequence by a pipeline, and the gas inlet of the third ball valve 321A is respectively communicated with the gas outlets of the first check valve 130A and the second check valve 230A, and the gas outlet of the first relief valve 322A is communicated with the gas inlet of the first gas outlet port 317A. At this moment, the nitrogen gas source and the hydrogen gas source can be medium-pressure gas sources, and can be reduced to low-pressure gas sources after the nitrogen gas and the hydrogen gas pass through the pressure reduction branch 310A, and can continue to be medium-pressure gas sources after the nitrogen gas and the hydrogen gas pass through the pressure stabilization branch 320A, so that gases with different air pressure values are provided. Of course, a monitoring device for detecting the gas pressure may be further disposed on the pressure stabilizing branch 320A, for example, a second pressure gauge 323A is disposed between the third ball valve 321A and the first safety valve 322A, so as to conveniently know the pressure value of the gas output by the pressure stabilizing branch 320A in real time.

In a preferred embodiment, as shown in fig. 2, in order to facilitate the air tightness detection during the fuel cell system integration process and after the fuel cell system integration is completed, the air supply device further includes a test passage 400, preferably, the test passage 400 includes a fourth ball valve 410, a mass flow meter 420, a fifth ball valve 430 and a second air outlet port 440, which are sequentially connected by a pipeline, and an air inlet of the fourth ball valve 410 is respectively communicated with air outlets of the first check valve 130A and the second check valve 230A. At this time, it is preferable that there are three fifth ball valves 430 and three second air outlet ports 440, so that the test path 400 has three air outlets, and air can be supplied to the non-through pipes in the stack, such as the cooling pipe, the hydrogen pipe, and the air pipe, so as to detect the air-cooled fuel cell system and the stack, the liquid-cooled fuel cell system, and the stack. Of course, a monitoring device for detecting the gas pressure may be further disposed on the test channel 400, for example, a third pressure gauge 460 may be disposed between the mass flow meter 420 and the fifth ball valve 430, so as to facilitate real-time understanding of the pressure value of the gas output from the test channel 400.

In a preferred embodiment, as shown in FIG. 2, the test channel 400 further comprises a sixth ball valve 450, wherein an inlet of the sixth ball valve 450 is communicated with the pipeline behind the first needle valve 314A, and an outlet of the sixth ball valve 450 is communicated with an inlet of the mass flow meter 420. At this time, two kinds of gas in pressure states, that is, the gas flowing through the fourth ball valve 410A (i.e., the gas that is not processed) and the gas flowing through the sixth ball valve 450 (i.e., the gas that is decompressed by the decompression valve) can be output to the component to be measured, and when the gas source is the medium-pressure gas, the gas that is output through the fourth ball valve 410 is the medium-pressure gas, and the gas that passes through the sixth ball valve 450 is the low-pressure gas.

In a preferred embodiment, as shown in fig. 3, in order to increase the diversity of the output gas source pressure values, the pressure reducing branch 310B in the gas processing path 300B may further include a first branch 311B and a second branch 312B, wherein the first branch 311B is communicated with the nitrogen supply path 100B, and the second branch 312B is communicated with the hydrogen supply path 200B. That is, the gas inlet of the first branch 311B is communicated with the gas outlet of the nitrogen supply passage 100B, and the gas inlet of the second branch 312B is communicated with the gas outlet of the hydrogen supply passage 200B, so that the treated nitrogen and hydrogen are respectively output by using two pipelines. At this time, the air inlets of the pressure stabilizing branch 320B in the air processing passage 300B need to be respectively communicated with the air inlets of the first branch 311B and the second branch 312B, and the air outlet of the pressure stabilizing branch 320B can be communicated with the air outlet of the first branch 311B and/or the second branch 312B.

In a preferred embodiment, as shown in fig. 3, it is preferable that the first branch 311B and the second branch 312B have the same structure, and as described in detail with reference to the second branch 312B, the second branch 312B includes a second pressure reducing valve 312B1, a third filter 312B2, a third pressure reducing valve 312B3, a second relief valve 312B4, a second needle valve 312B5, a second solenoid valve 312B6, a second pressure switch 312B7, and a third air outlet port 312B8, which are connected in sequence through a pipeline. The gas inlet of the second pressure reducing valve in the second branch 312B is communicated with the processing port of the hydrogen supply passage, and the two pressure reducing valves are used for reducing the pressure of the gas twice, so that the hydrogen supply passage 200B can be connected with a high-pressure gas source to output low-pressure gas. Of course, a monitoring device for detecting the gas pressure may be further disposed on the second branch 312B, for example, a fourth pressure gauge 313B is disposed between the second pressure reducing valve 312B1 and the third filter 312B2, so as to facilitate real-time understanding of the pressure value of the gas processed by the second pressure reducing valve 312B 1; a fifth pressure gauge 314B may be further disposed between the second solenoid valve 312B6 and the second pressure switch 312B7, so as to facilitate real-time knowledge of the pressure value of the gas output from the second branch 312B. At this time, the nitrogen supply passage 100B may include a third air inlet port 110B and a third check valve 120B that are sequentially communicated through a pipeline, and an air outlet of the third check valve 120B may be connected to an air inlet of the first branch 311B; the hydrogen supply passage 200B may also include a fourth air inlet port 210B and a fourth check valve 220B that are sequentially communicated through a pipeline, and an air outlet of the fourth check valve 220B is connected to an air inlet of the second branch 312B. Of course, the form of the nitrogen supply passage 100B and the hydrogen supply passage 200B may also be arranged with reference to the foregoing form, and will not be described in detail here.

In a preferred embodiment, as shown in fig. 4, the valve further includes a seventh ball valve 315B and an eighth ball valve 316B, two ends of the seventh ball valve 315B are respectively communicated with the first branch 311B and the second branch 312B, and two ports of the seventh ball valve 315B are respectively communicated with the pipeline located behind the pressure switch in the first branch 311B and the second branch 312B; the eighth ball valve 316B is located in the first branch, an air inlet of the eighth ball valve 316B is located behind a port of the seventh ball valve 315B, and an air inlet of the eighth ball valve 316B is communicated with an air inlet of the third air outlet port 312B 8. In this embodiment, the seventh ball valve 315B is arranged to discharge the nitrogen in the first branch 311B from the outlet of the second branch 312B (i.e. the third outlet port 312B8 in the second branch 312B), and the eighth ball valve 316B is arranged to close the outlet of the first branch 311B when the nitrogen is discharged from the third outlet port 312B8 in the second branch 312B.

In a preferred embodiment, as shown in FIG. 3, the pressure stabilizing branch 320B in the gas processing circuit 300B may also include a ninth ball valve 321B, a tenth ball valve 322B and an eleventh ball valve 323B, wherein the inlet of the ninth ball valve 322B is communicated with the outlet of the filter 311B in the first branch, the inlet of the tenth ball valve 322B is communicated with the outlet of the third filter 312B2 in the second branch 312B, the inlet of the eleventh ball valve 323B is communicated with the outlets of the ninth ball valve 321B and the tenth ball valve 322B, respectively, and the outlet of the eleventh ball valve 323B is communicated with the inlet of the third outlet port in the first branch 311B. At this time, the nitrogen and the hydrogen may be primarily reduced in pressure by the second pressure reducing valve 312B1 and then discharged through the third outlet port 312B8, specifically, when the gas source is a high-pressure gas source, the gas discharged from the first branch 311B or the second branch 312B is a low-pressure gas, and the gas discharged from the pressure stabilizing branch 320B is a medium-pressure gas processed by the second pressure reducing valve 312B 1.

In a preferred embodiment, the air supply device further comprises a bearing frame for mounting the air supply device, and the air supply devices in the two forms can be arranged on the bearing frame at the same time, so that the air supply device is suitable for air sources with different pressure values. Of course, the bearing frame can be provided with the roller wheels so as to facilitate the movement of the air supply device, and the bearing frame can be provided with a motor and other devices for driving the roller wheels to rotate so as to facilitate the automatic driving of the air supply device to move.

The above is only the part or the preferred embodiment of the present invention, no matter the characters or the drawings can not limit the protection scope of the present invention, all under the whole concept of the present invention, the equivalent structure transformation performed by the contents of the specification and the drawings is utilized, or the direct/indirect application in other related technical fields is included in the protection scope of the present invention.

Claims (10)

1. The gas supply device of the fuel cell system is characterized by comprising a nitrogen supply passage, a hydrogen supply passage and a gas treatment passage, wherein the gas treatment passage comprises a pressure reduction branch for reducing the pressure of gas and a pressure stabilization branch for stabilizing the pressure of the gas, a gas inlet of the pressure reduction branch is communicated with a gas outlet of the nitrogen supply passage and a gas outlet of the hydrogen supply passage, a gas outlet of the pressure reduction branch can be communicated with a tested component, a gas inlet of the pressure stabilization branch is communicated with a gas inlet or the middle part of the pressure reduction branch, and a gas outlet of the pressure stabilization branch is communicated with a gas outlet of the pressure reduction branch.

2. The gas supply device according to claim 1, wherein the nitrogen supply passage comprises a first gas inlet interface, a first filter and a first one-way valve which are connected in sequence through a pipeline, and a gas outlet of the first one-way valve is communicated with a gas inlet of the pressure reduction branch; the hydrogen supply passage comprises a second air inlet interface, a second filter and a second one-way valve which are sequentially connected through a pipeline, and an air outlet of the second one-way valve is communicated with an air inlet of the pressure reduction branch.

3. The gas supply device according to claim 2, wherein the pressure reducing branch comprises a first ball valve, a first pressure reducing valve, a first electromagnetic valve, a first needle valve, a first pressure switch, a second ball valve and a first gas outlet interface which are connected in sequence through pipelines, and a gas inlet of the first ball valve is respectively communicated with gas outlets of the first one-way valve and the second one-way valve.

4. The gas supply device according to claim 3, wherein the pressure stabilizing branch comprises a third ball valve and a first safety valve which are connected in sequence through a pipeline, a gas inlet of the third ball valve is communicated with a gas outlet of the first one-way valve and a gas outlet of the second one-way valve respectively, and a gas outlet of the first safety valve is communicated with a gas inlet of the first gas outlet interface.

5. The gas supply device according to claim 3, further comprising a test passage, wherein the test passage comprises a fourth ball valve, a mass flow meter, a fifth ball valve and a second gas outlet connector which are sequentially connected through a pipeline, and a gas inlet of the fourth ball valve is respectively communicated with gas outlets of the first one-way valve and the second one-way valve.

6. The gas supply apparatus according to claim 5, wherein the test passage further comprises a sixth ball valve, an inlet of the sixth ball valve is communicated with a pipeline positioned behind the first needle valve, and an outlet of the sixth ball valve is communicated with an inlet of the mass flow meter.

7. The gas supply device according to claim 1 or 2, wherein the pressure reducing branch includes a first branch and a second branch, a gas inlet of the first branch communicates with a gas outlet of the nitrogen supply passage, and a gas inlet of the second branch communicates with a gas outlet of the hydrogen supply passage.

8. The gas supply device according to claim 7, wherein the first branch and the second branch each include a second pressure reducing valve, a third filter, a third pressure reducing valve, a second safety valve, a second needle valve, a second solenoid valve, a second pressure switch, and a third gas outlet port, which are connected in sequence by a pipeline, and gas inlets of the second pressure reducing valves in the first branch and the second branch are communicated with gas outlets of the nitrogen supply passage and the hydrogen supply passage in a one-to-one correspondence manner.

9. The gas supply device according to claim 8, wherein the pressure reducing branch further comprises a seventh ball valve and an eighth ball valve, two ends of the seventh ball valve are respectively communicated with the first branch and the second branch, and two ports of the seventh ball valve are respectively located behind the second pressure switch in the first branch and the second branch; the eighth ball valve is located in the first branch, an air inlet of the eighth ball valve is located behind a port of the seventh ball valve, and the air inlet of the eighth ball valve is communicated with an air inlet of the third air outlet interface.

10. The air supply device according to claim 8, wherein the pressure stabilizing branch comprises a ninth ball valve, a tenth ball valve and an eleventh ball valve, an air inlet of the ninth ball valve is communicated with an air outlet of the third filter in the first branch, an air inlet of the tenth ball valve is communicated with an air outlet of the third filter in the second branch, an air inlet of the eleventh ball valve is communicated with air outlets of the ninth ball valve and the tenth ball valve respectively, and an air outlet of the eleventh ball valve is communicated with an air inlet of the third air outlet port in the first branch.

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