CN117846948A - Hydrogen pump testing device and testing equipment of fuel cell system - Google Patents
Hydrogen pump testing device and testing equipment of fuel cell system Download PDFInfo
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- CN117846948A CN117846948A CN202311702977.3A CN202311702977A CN117846948A CN 117846948 A CN117846948 A CN 117846948A CN 202311702977 A CN202311702977 A CN 202311702977A CN 117846948 A CN117846948 A CN 117846948A
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- hydrogen pump
- input end
- hydrogen
- intercooler
- output end
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 179
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 179
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 176
- 239000000446 fuel Substances 0.000 title claims abstract description 32
- 238000004088 simulation Methods 0.000 claims abstract description 27
- 230000033228 biological regulation Effects 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 85
- 239000007789 gas Substances 0.000 claims description 9
- 239000000110 cooling liquid Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000003570 air Substances 0.000 description 79
- 238000005057 refrigeration Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/18—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/064—Cooling by a cooling jacket in the pump casing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel Cell (AREA)
Abstract
The application discloses a hydrogen pump testing device and testing equipment of a fuel cell system, wherein the device comprises a hydrogen simulation branch, a first hydrogen pump connecting branch, a galvanic pile simulation branch and a first temperature regulation loop, and the hydrogen simulation branch comprises a first air filter, an air compressor, a first back pressure valve and a pressure reducing valve; the electric pile simulation branch circuit comprises a first intercooler, a second flowmeter, a second back pressure valve and a third back pressure valve; according to the hydrogen pump testing device, the external air can be simulated to be hydrogen with certain pressure and flow to test the hydrogen pump, so that the real hydrogen is not required to be used for testing, the cost can be reduced, and the safety is improved. Moreover, when the hydrogen pump is tested, the working condition of hydrogen consumption of the electric pile can be simulated, so that the test result of the hydrogen pump is more accurate, and the error is smaller.
Description
Technical Field
The present disclosure relates to fuel cell technologies, and in particular, to a hydrogen pump testing device and a testing apparatus for a fuel cell system.
Background
Proton exchange membrane hydrogen fuel cell systems (Proton Exchange Membrane Fuel Cell, PEMFC) utilize the reaction of hydrogen and oxygen to generate electricity, the product of which is water, and since both reactants and products are clean and free of contaminants, PEMFC systems are beginning to be used in the automotive and distributed power generation fields. The hydrogen pump is a very important component in the PEMFC system, so that when the PEMFC system is tested on the hydrogen pump, a testing device is firstly built to test the main performance of the hydrogen pump so as to determine that the hydrogen pump has normal performance and can meet the requirements of the fuel cell system.
In the related art, the device for testing the hydrogen pump cannot simulate the consumed working condition of hydrogen, so that the error of the test result is larger and inaccurate.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides a hydrogen pump testing device and testing equipment of a fuel cell system, when testing a hydrogen pump, the working condition of hydrogen consumed by a cell stack can be simulated, so that the testing result of the hydrogen pump is more accurate, and the error is smaller.
A hydrogen pump test device according to an embodiment of the first aspect of the present application, comprising:
the hydrogen simulation branch comprises a first air filter, an air compressor, a first back pressure valve and a pressure reducing valve, wherein the input end of the first air filter is connected with external air, the output end of the first air filter is connected with the input end of the air compressor, the output end of the air compressor is respectively connected with the input end of the first back pressure valve and the input end of the pressure reducing valve, and the output end of the first back pressure valve is connected to the external air;
the first hydrogen pump connecting branch comprises a humidifying container and a first flowmeter, wherein the output end of the humidifying container is connected with the input end of the first flowmeter, the output end of the first flowmeter is used for being detachably connected with the input end of the hydrogen pump, and the output end of the pressure reducing valve is used for being detachably connected with the output end of the hydrogen pump;
the electric pile simulation branch circuit comprises a first intercooler, a second flowmeter, a second back pressure valve and a third back pressure valve, wherein the input end of the first intercooler is connected with the output end of the second back pressure valve, the input end of the second back pressure valve is used for being detachably connected with the output end of the hydrogen pump, the input end of the second back pressure valve is also connected with the output end of the pressure reducing valve, the input end of the first intercooler is also connected with the input end of the third back pressure valve through the second flowmeter, the output end of the third back pressure valve is connected to the outside air, and the output end of the first intercooler is connected with the input end of the humidifying container;
the first temperature regulation loop is connected with the air compressor and the first intercooler respectively, and the first temperature regulation loop is used for radiating heat.
The hydrogen pump testing device provided by the embodiment of the application has at least the following beneficial effects: external air enters from the hydrogen simulation branch and then is conveyed to the electric pile simulation branch, the air sequentially passes through the humidifying container and the first flowmeter after passing through the simulation branch, then enters the hydrogen pump, and enters the electric pile simulation branch again after being output from the hydrogen pump, so that a circulation loop in the fuel cell system is simulated. Specifically, in the hydrogen simulation branch, the input end of the first air filter is connected with external air, the external air is equivalent to hydrogen, and the pressure and the flow of the connected air can be adjusted through the first air filter, the air compressor, the first back pressure valve and the pressure reducing valve, so that the hydrogen with certain pressure and flow can be simulated and input into the electric pile simulation branch. In the pile simulation branch, simulating the resistance of the pile through a second back pressure valve; and part of air is discharged to the outside through the second flowmeter and the third back pressure valve, so that the working condition of hydrogen consumption of the galvanic pile during reaction is simulated, and the first intercooler is used for reducing the temperature. The cooler branch is used for radiating heat of the first intercooler and the air compressor. In the first hydrogen pump connection branch, in actual case, since water is generated by the reactor reaction, the humidity of the gas flowing into the hydrogen pump is generally large, and thus the present application humidifies the air entering the hydrogen pump through the humidification container. So, the hydrogen pump testing arrangement of this application embodiment can simulate the outside air into the hydrogen that has certain pressure and flow and test the hydrogen pump to need not to use real hydrogen to test, can reduce cost, and improve the security. Moreover, when the hydrogen pump is tested, the working condition of hydrogen consumption of the electric pile can be simulated, so that the test result of the hydrogen pump is more accurate, and the error is smaller.
According to some embodiments of the present application, the humidification vessel stores water and a cavity for passage of gas is formed above the water.
According to some embodiments of the present application, the first temperature regulation loop further includes a first water pump, a first expansion tank, a radiator, an air compressor controller, a first ball valve and a second ball valve, an output end of the radiator is connected with an input end of the first water pump, the first expansion tank is respectively connected with the input end of the first water pump and the radiator, an output end of the first water pump is connected with the first intercooler through the second ball valve, and the first water pump is used for driving cooling liquid to flow into the second ball valve and the first intercooler in sequence and then flow into the input end of the radiator; the output end of the first water pump is further connected with the air compressor controller through the first ball valve in sequence, and the first water pump is used for driving cooling liquid to flow into the first ball valve in sequence, the air compressor controller and the air compressor to flow to the input end of the radiator.
According to some embodiments of the application, the galvanic pile simulation branch further comprises a first temperature sensor, and the first temperature sensor is arranged at the output end of the first intercooler.
According to some embodiments of the present application, the input end and the output end of the hydrogen pump are respectively provided with a pressure sensor; the pressure sensors are respectively arranged at the input end and the output end of the second back pressure valve; the pressure sensor is respectively arranged at the input end and the output end of the pressure reducing valve.
According to some embodiments of the application, the first temperature regulation loop further comprises a second temperature sensor, and the second temperature sensor is arranged at the output end of the first water pump.
According to some embodiments of the present application, the hydrogen pump further comprises a second temperature regulation loop and a second hydrogen pump connection branch, the second hydrogen pump connection branch comprises a second intercooler, a second air filter, a third flowmeter and a fourth back pressure valve, an input end of the second intercooler is connected to outside air, an output end of the second intercooler is connected to an input end of the second air filter, an output end of the second air filter is connected to an input end of the third flowmeter, an output end of the third flowmeter is detachably connected to an input end of the hydrogen pump, an input end of the fourth back pressure valve is detachably connected to an output end of the hydrogen pump, and an output end of the fourth back pressure valve is connected to outside air;
the second temperature regulation loop is connected with the second intercooler, and the second temperature regulation loop is used for regulating the temperature of the second intercooler.
According to some embodiments of the present application, the second temperature regulation loop includes second expansion tank, refrigeration water machine, second water pump, third ball valve and heater, the output of refrigeration water machine with the input of second water pump is connected, the second expansion tank respectively with the input of refrigeration water machine the input of second water pump is connected, the output of second water pump passes through in proper order the third ball valve the heater is connected to the second intercooler, the second water pump is used for driving the coolant liquid to pass through in proper order the third ball valve the heater the inflow behind the second intercooler the input of refrigeration water machine.
According to some embodiments of the application, the second hydrogen pump connection branch further comprises a third temperature sensor, which is provided at the output end of the second intercooler.
An embodiment of a second aspect of the present application provides a test apparatus for a fuel cell system, including a hydrogen pump test device according to any one of the embodiments of the first aspect of the present application.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The application is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a hydrogen pump test apparatus according to one embodiment of the present application;
fig. 2 is a schematic structural diagram of a hydrogen pump test device according to another embodiment of the present application.
Reference numerals:
a first air filter 110; an air compressor 120; a pressure reducing valve 130; a first back pressure valve 140;
a humidification vessel 210; a first flow meter 220; a hydrogen pump 230;
a first intercooler 310; a second back pressure valve 320; a second flowmeter 330; a third back pressure valve 340; a first temperature sensor 350;
a first water pump 410; a first expansion tank 420; a heat sink 430; a first ball valve 440; a second ball valve 450; a second temperature sensor 460;
a second intercooler 510; a second air filter 520; a third flowmeter 530; a fourth back pressure valve 540; a third temperature sensor 550;
a second expansion tank 610; a second water pump 620; a refrigeration chiller 630; a third ball valve 640; a heater 650;
a pressure sensor 700; a proportional valve 710.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it should be understood that references to orientation descriptions, such as directions of up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical solution.
In the description of the present application, a description with reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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 present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The hydrogen pump is mainly used for recycling unreacted hydrogen at the outlet of the fuel cell stack to the inlet of the fuel cell stack, so that the utilization rate of the hydrogen and the safety of hydrogen utilization are improved; the water generated by the electrochemical reaction in the fuel cell stack is circulated to the hydrogen inlet, so that the effect of humidifying the air inlet is achieved, the water level in the fuel cell stack is improved, the water management capability is improved, and the output characteristic of the fuel cell stack is further improved; because the hydrogen circulating pump has the humidifying effect on the inlet air, an additional humidifying system is omitted from the hydrogen inlet, and the fuel cell system is more simplified.
In some related technologies, the device for testing the hydrogen pump uses hydrogen for testing, and the hydrogen cost is very high due to the long testing time. And the hydrogen emission also causes a great potential safety hazard, and the investment cost of the safety measures is also great. In other related technologies, the manufacturers of the fuel cell system do not test the hydrogen pump parts, but directly install the hydrogen pump on the fuel cell system to test whether the performance is met, and directly install the fuel cell system parts on the fuel cell system to verify whether the performance can meet the requirements, if the selection allowance is reserved insufficiently, the capacity is insufficient or other performances are not met, the system test is stopped, a period of time is required for re-selecting and purchasing materials, and the space and the fixed support for replacing other parts originally designed are not compatible, so that the project test is greatly delayed easily.
Based on this, this application provides a hydrogen pump testing arrangement, can utilize ambient air to test the hydrogen pump, and the cost is very low, and the potential safety hazard is also low to test the hydrogen pump in advance, just can confirm whether the hydrogen pump satisfies the performance requirement before testing whole fuel cell system, in time change when finding the hydrogen pump and do not satisfy, can avoid leading to the condition of whole system test stagnation because of the hydrogen pump does not satisfy the performance.
In addition, in the related art, the hydrogen pump test device has an open circulation loop and a completely closed loop, which are different from the actual operating condition of the fuel cell system, so that the error of the hydrogen pump test device is relatively large. Because the actual fuel cell system is operated, the hydrogen can react and be consumed, no matter the hydrogen or other gases are used by the hydrogen pump testing device in the related technology, the gases can not react and be consumed, the situation that the electric pile consumes the hydrogen can not be simulated, a certain error can be caused with the actual situation, and the hydrogen pump testing device can simulate the working condition that the gases are consumed in the hydrogen pump, so that the error between the testing result and the actual situation is smaller, and the testing result is more accurate.
Referring to fig. 1 to 2, an embodiment of a first aspect of the present application provides a hydrogen pump test apparatus, including:
the hydrogen simulation branch comprises a first air filter 110, an air compressor 120, a first back pressure valve 140 and a pressure reducing valve 130, wherein the input end of the first air filter 110 is connected with external air, the output end of the first air filter 110 is connected with the input end of the air compressor 120, the output end of the air compressor 120 is respectively connected with the input end of the first back pressure valve 140 and the input end of the pressure reducing valve 130, and the output end of the first back pressure valve 140 is connected to the external air;
a first hydrogen pump connection branch including a humidification container 210 and a first flow meter 220, an output end of the humidification container 210 being connected to an input end of the first flow meter 220, an output end of the first flow meter 220 being detachably connected to an input end of the hydrogen pump 230, an output end of the pressure reducing valve 130 being detachably connected to an output end of the hydrogen pump 230;
a stack simulation branch including a first intercooler 310, a second flowmeter 330, a second back pressure valve 320, and a third back pressure valve 340, an input of the first intercooler 310 being connected to an output of the second back pressure valve 320, an input of the second back pressure valve 320 being detachably connected to an output of the hydrogen pump 230, an input of the second back pressure valve 320 being further connected to an output of the pressure reducing valve 130, an input of the first intercooler 310 being further connected to an input of the third back pressure valve 340 through the second flowmeter 330, an output of the third back pressure valve 340 being connected to outside air, an output of the first intercooler 310 being connected to an input of the humidifying vessel 210;
the first temperature regulation loop is connected with the air compressor 120 and the first intercooler 310 respectively, and the first temperature regulation loop is used for heat dissipation.
The hydrogen pump testing device provided by the embodiment of the application has at least the following beneficial effects: external air enters from the hydrogen simulation branch and then is conveyed to the stack simulation branch, the air passes through the humidification vessel 210 and the first flowmeter 220 in sequence after passing through the simulation branch, enters the hydrogen pump 230, and then is output from the hydrogen pump 230 and enters the stack simulation branch again, so that a circulation loop in the fuel cell system is simulated. Specifically, in the hydrogen simulation branch, the external air is introduced through the input end of the first air filter 110, and is equivalent to hydrogen, and the pressure and flow rate of the introduced air can be adjusted through the first air filter 110, the air compressor 120, the first back pressure valve 140 and the pressure reducing valve 130, so that hydrogen with a certain pressure and flow rate can be simulated and is input into the pile simulation branch. And in the stack simulation branch, the resistance of the stack is simulated through the second back pressure valve 320; part of the air is discharged to the outside through the second flowmeter 330 and the third back pressure valve 340, thereby simulating the operation of the stack consuming hydrogen while the reaction is being performed, and the first intercooler 310 is used to reduce the temperature. The cooler bypass is used for heat dissipation between the first intercooler 310 and the air compressor 120. In the first hydrogen pump connection branch, in actual case, since water is generated by the galvanic pile reaction, the humidity of the gas flowing into the hydrogen pump 230 is generally large, and thus the present application humidifies the air entering the hydrogen pump 230 through the humidification vessel 210. Thus, the hydrogen pump testing device of the embodiment of the application can simulate the external air into the hydrogen with certain pressure and flow to test the hydrogen pump 230, so that the real hydrogen is not required to be used for testing, the cost can be reduced, and the safety is improved. Moreover, when the hydrogen pump 230 is tested, the working condition of hydrogen consumption of the electric pile can be simulated, so that the test result of the hydrogen pump 230 is more accurate, and the error is smaller.
The hydrogen pump testing device can test the hydrogen pump 230 by using ambient air, has very low cost and low potential safety hazard, tests the hydrogen pump 230 in advance, can determine whether the hydrogen pump 230 meets the performance requirement before testing the whole fuel cell system, and timely changes the hydrogen pump 230 when the hydrogen pump 230 is found to be unsatisfied, so that the condition of stagnation of the whole system test caused by the unsatisfied performance of the hydrogen pump 230 can be avoided; the hydrogen pump testing device can simulate the working condition that the gas is consumed in the hydrogen pump 230, so that the error between the testing result and the actual situation is smaller, and the testing result is more accurate.
It should be noted that, the output end of the pressure reducing valve 130 is detachably connected to the output end of the hydrogen pump 230 by way of plugging in a pipeline; the output end of the first flowmeter 220 is detachably connected with the input end of the hydrogen pump 230 in a pipeline plugging manner; the input end of the second back pressure valve 320 is detachably connected with the output end of the hydrogen pump 230 by way of pipe plugging. In this way, the hydrogen pump 230 is easily removed after the test is completed.
It is noted that in the hydrogen simulation branch, the air flow rate and the pressure may be adjusted by adjusting the rotation speed of the air compressor 120, the opening degree of the first back pressure valve 140, and the pressure reducing valve 130. The first air filter 110 serves to filter air.
It will be appreciated that the humidification vessel 210 stores water and a cavity is formed above the water for the passage of gases. When air flows through the humidification vessel 210, the air passes through the cavity and contacts water in the humidification vessel 210, so that the humidity of the air can be increased, and the effect of simulating that hydrogen with high humidity enters the input end of the hydrogen pump 230 is achieved.
It may be appreciated that referring to fig. 1, the first temperature adjusting circuit further includes a first water pump 410, a first expansion tank 420, a radiator 430, an air compressor 120 controller, a first ball valve 440, and a second ball valve 450, wherein an output end of the radiator 430 is connected with an input end of the first water pump 410, the first expansion tank 420 is respectively connected with an input end of the first water pump 410 and the radiator 430, an output end of the first water pump 410 is connected with the first intercooler 310 through the second ball valve 450, and the first water pump 410 is used for driving the cooling liquid to flow into the second ball valve 450 and the first intercooler 310 in sequence and then flow into an input end of the radiator 430; the output end of the first water pump 410 is further connected with the air compressor 120 controller and the air compressor 120 in sequence through the first ball valve 440, and the first water pump 410 is used for driving cooling liquid to flow into the first ball valve 440, the air compressor 120 controller and the air compressor 120 in sequence and then flow to the input end of the radiator 430. The first expansion tank 420 is used to vent the first day temperature regulation circuit and add water. The air compressor 120, the air compressor 120 controller, and the first intercooler 310 can be cooled by the radiator 430 of the first temperature regulation loop, thereby realizing a temperature regulation function.
The first temperature regulation loop further includes a second temperature sensor 460, where the second temperature sensor 460 is disposed at an output end of the first water pump 410.
It is understood that the stack simulation branch further includes a first temperature sensor 350, and the first temperature sensor 350 is disposed at an output end of the first intercooler 310. The first temperature sensor 350 is configured to detect a temperature at an output of the first intercooler 310.
It can be appreciated that the input and output of the hydrogen pump 230 are provided with pressure sensors 700, respectively; the input end and the output end of the second back pressure valve 320 are respectively provided with a pressure sensor 700; pressure sensors 700 are provided at the input and output ends of the pressure reducing valve 130, respectively.
The first temperature regulation loop further includes a second temperature sensor 460, where the second temperature sensor 460 is disposed at an output end of the first water pump 410.
In one embodiment, the output of the pressure relief valve 130 is coupled to the output of the hydrogen pump 230 through a proportional valve 710. Specifically, the peak operating conditions of the fuel cell system in one embodiment are: the front end inlet pressure p of the proportional valve 710, the pressure difference Deltap of the hydrogen inlet and outlet of the electric pile, the flow rate of the hydrogen pump 230 reaches (lambda-1) a, the electric pile consumption flow rate a and the inlet temperature T of the hydrogen pump 230. The hydrogen pump test device of the present application verifies whether the performance of the hydrogen pump 230 meets the peak working condition of the fuel cell system, specifically: the pressure reducing valve 130 is regulated to reduce the pressure at the input end of the proportional valve 710 to p, so that the first ball valve 440 and the second ball valve 450 are fully opened, the first water pump 410 is started, and the radiator 430 is opened; all the back pressure valves are fully opened first, the proportional valve 710 is fully closed, the air compressor 120 is opened, then the pressure at the input end of the pressure reducing valve 130 is larger than p and the flow at the input end of the pressure reducing valve 130 is larger than (lambda+1) a through regulating the rotating speed of the air compressor 120 and the first back pressure valve 140, so that the pressure value of the pressure sensor 700 at the output end of the pressure reducing valve 130 is equal to p, then the hydrogen pump 230 and the proportional valve 710 are opened, and the flow of the first flowmeter 220 reaches (lambda-1) a through regulating the rotating speed of the hydrogen pump 230, the opening of the second back pressure valve 320, the opening of the third back pressure valve 340 and the opening of the proportional valve 710, and the pressure difference between the pressure sensor 700 at the input end of the second back pressure valve 320 and the pressure sensor 700 at the output end of the second back pressure valve 320 is delta p, and the flow of the second flowmeter 330 reaches a; and then, adjusting the fan speeds of the first water pump 410 and the radiator 430 so that the temperature of the second temperature sensor 460 at the output end of the first water pump 410 is less than 60 ℃, and maintaining the temperature of the first temperature sensor 350 at the output end of the first intercooler 310 at T, so that the whole system operates for 5 minutes, and if other conditions meet the operation condition requirements, the hydrogen pump 230 can maintain the flow (lambda-1) a, and the hydrogen pump 230 is proved to meet the peak condition requirements.
It will be appreciated that, referring to fig. 2, the hydrogen pump test apparatus of the embodiment of the present application further includes a second temperature regulation loop and a second hydrogen pump connection branch, where the second hydrogen pump connection branch includes a second intercooler 510, a second air filter 520, a third flowmeter 530, and a fourth back pressure valve 540, an input end of the second intercooler 510 is connected to the outside air, an output end of the second intercooler 510 is connected to an input end of the second air filter 520, an output end of the second air filter 520 is connected to an input end of the third flowmeter 530, an output end of the third flowmeter 530 is detachably connected to an input end of the hydrogen pump 230, an input end of the fourth back pressure valve 540 is detachably connected to an output end of the hydrogen pump 230, and an output end of the fourth back pressure valve 540 is connected to the outside air;
the second temperature adjusting circuit is connected to the second intercooler 510, and the second temperature adjusting circuit is used for adjusting the temperature of the second intercooler 510.
The second temperature regulation loop includes a second expansion tank 610, a water chiller 630, a second water pump 620, a third ball valve 640 and a heater 650, wherein the output end of the water chiller 630 is connected with the input end of the second water pump 620, the second expansion tank 610 is respectively connected with the input end of the water chiller 630 and the input end of the second water pump 620, the output end of the second water pump 620 is connected to the second intercooler 510 through the third ball valve 640 and the heater 650 in sequence, and the second water pump 620 is used for driving cooling liquid to flow into the input end of the water chiller 630 after passing through the third ball valve 640, the heater 650 and the second intercooler 510 in sequence.
The second hydrogen pump connection branch further comprises a third temperature sensor 550, the third temperature sensor 550 being provided at the output of the second intercooler 510.
The first temperature control circuit exchanges heat with the air compressor 120 and the first intercooler 310. The second temperature regulation loop exchanges heat with the second intercooler 510.
The heater 650 is a PTC water heater 650. The second temperature adjusting circuit and the second hydrogen pump connecting branch are used for testing the data of the flow and the pressure difference of the hydrogen pump 230 at different rotation speeds, when the second temperature adjusting circuit and the second hydrogen pump connecting branch are used, the hydrogen pump 230 is detached from the first hydrogen pump 230, then the output end of the third flowmeter 530 is detachably connected with the input end of the hydrogen pump 230, and the input end of the fourth back pressure is detachably connected with the output end of the hydrogen pump 230. In the test, the third ball valve 640 is first adjusted to the maximum opening degree, the second water pump 620 is turned on, and whether to turn on the water chiller 630 or the PTC water heater 650 is determined according to the temperature required for the test. Specifically, if the temperature required by the test is higher than the ambient temperature, the PTC water heater 650 is turned on, the refrigeration water machine 630 is turned off, and the temperature of the second intercooler 510 detected by the third temperature sensor 550 meets the temperature required by the test by adjusting the operation power of the PTC water heater 650 and the rotation speed of the second water pump 620 (the third ball valve 640 can assist the second water pump 620 to adjust the flow); if the temperature required by the test is lower than the ambient temperature, the refrigeration water machine 630 is started, the PTC water heater 650 is closed, and the third temperature sensor 550 detects that the temperature of the second intercooler 510 meets the temperature required by the test by adjusting the operation power of the refrigeration water machine 630 and the rotation speed of the second water pump 620 (the third ball valve 640 is used for assisting the second water pump 620 to adjust the flow); after the second intercooler 510 meets the test requirement temperature, the fourth back pressure valve 540 is fully opened first, then the hydrogen pump 230 is opened at a certain rotation speed, the rotation speed of the hydrogen pump 230 is maintained, the opening degree of the fourth back pressure valve 540 is adjusted, and the flow rate of the hydrogen pump 230 and the pressure at the input end of the hydrogen pump 230 corresponding to the opening degrees of different back pressure valves are tested at the rotation speed, so that the curve relationship between the flow rate and the pressure difference at the rotation speed is obtained.
An embodiment of a second aspect of the present application provides a test apparatus for a fuel cell system, including a hydrogen pump test device according to any one of the embodiments of the first aspect of the present application.
Since the test apparatus of the fuel cell system includes the hydrogen pump test device of the embodiment of the first aspect, the corresponding contents of the hydrogen pump test device in the embodiment mentioned in the first aspect are equally applicable to the test apparatus of the fuel cell system in the embodiment mentioned in the second aspect, and have the same implementation principles and technical effects, and are not described in detail herein to avoid redundancy of description.
The embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application. Furthermore, embodiments of the present application and features of the embodiments may be combined with each other without conflict.
Claims (10)
1. A hydrogen pump testing apparatus, comprising:
the hydrogen simulation branch comprises a first air filter, an air compressor, a first back pressure valve and a pressure reducing valve, wherein the input end of the first air filter is connected with external air, the output end of the first air filter is connected with the input end of the air compressor, the output end of the air compressor is respectively connected with the input end of the first back pressure valve and the input end of the pressure reducing valve, and the output end of the first back pressure valve is connected to the external air;
the first hydrogen pump connecting branch comprises a humidifying container and a first flowmeter, wherein the output end of the humidifying container is connected with the input end of the first flowmeter, the output end of the first flowmeter is used for being detachably connected with the input end of the hydrogen pump, and the output end of the pressure reducing valve is used for being detachably connected with the output end of the hydrogen pump;
the electric pile simulation branch circuit comprises a first intercooler, a second flowmeter, a second back pressure valve and a third back pressure valve, wherein the input end of the first intercooler is connected with the output end of the second back pressure valve, the input end of the second back pressure valve is used for being detachably connected with the output end of the hydrogen pump, the input end of the second back pressure valve is also connected with the output end of the pressure reducing valve, the input end of the first intercooler is also connected with the input end of the third back pressure valve through the second flowmeter, the output end of the third back pressure valve is connected to the outside air, and the output end of the first intercooler is connected with the input end of the humidifying container;
the first temperature regulation loop is connected with the air compressor and the first intercooler respectively, and the first temperature regulation loop is used for radiating heat.
2. The hydrogen pump test device of claim 1, wherein water is stored in the humidification container and a cavity for passage of gas is formed above the water.
3. The hydrogen pump test device according to claim 1, wherein the first temperature regulation loop further comprises a first water pump, a first expansion tank, a radiator, an air compressor controller, a first ball valve and a second ball valve, wherein an output end of the radiator is connected with an input end of the first water pump, the first expansion tank is respectively connected with the input end of the first water pump and the radiator, an output end of the first water pump is connected with the first intercooler through the second ball valve, and the first water pump is used for driving cooling liquid to flow into the second ball valve and the first intercooler in sequence and then flow into an input end of the radiator; the output end of the first water pump is further connected with the air compressor controller through the first ball valve in sequence, and the first water pump is used for driving cooling liquid to flow into the first ball valve in sequence, the air compressor controller and the air compressor to flow to the input end of the radiator.
4. The hydrogen pump test apparatus of claim 1, wherein the stack analog leg further comprises a first temperature sensor disposed at an output of the first intercooler.
5. The hydrogen pump test device according to claim 1, wherein the input end and the output end of the hydrogen pump are respectively provided with a pressure sensor; the pressure sensors are respectively arranged at the input end and the output end of the second back pressure valve; the pressure sensor is respectively arranged at the input end and the output end of the pressure reducing valve.
6. The hydrogen pump test apparatus of claim 3, wherein the first temperature regulation loop further comprises a second temperature sensor disposed at an output of the first water pump.
7. The hydrogen pump test apparatus according to claim 1, further comprising a second temperature regulation circuit and a second hydrogen pump connection branch including a second intercooler, a second air filter, a third flowmeter, and a fourth back pressure valve, an input of the second intercooler being connected to outside air, an output of the second intercooler being connected to an input of the second air filter, an output of the second air filter being connected to an input of the third flowmeter, an output of the third flowmeter being detachably connected to an input of the hydrogen pump, an input of the fourth back pressure valve being detachably connected to an output of the hydrogen pump, an output of the fourth back pressure valve being connected to outside air;
the second temperature regulation loop is connected with the second intercooler, and the second temperature regulation loop is used for regulating the temperature of the second intercooler.
8. The hydrogen pump test device according to claim 7, wherein the second temperature adjusting circuit comprises a second expansion tank, a water chiller, a second water pump, a third ball valve and a heater, wherein an output end of the water chiller is connected with an input end of the second water pump, the second expansion tank is respectively connected with the input end of the water chiller and an input end of the second water pump, an output end of the second water pump is connected to the second intercooler through the third ball valve and the heater in sequence, and the second water pump is used for driving cooling liquid to flow into the input end of the water chiller after passing through the third ball valve, the heater and the second intercooler in sequence.
9. The hydrogen pump test apparatus of claim 7, wherein the second hydrogen pump connection branch further comprises a third temperature sensor disposed at an output of the second intercooler.
10. A test apparatus for a fuel cell system, characterized by comprising the hydrogen pump test device according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311702977.3A CN117846948A (en) | 2023-12-11 | 2023-12-11 | Hydrogen pump testing device and testing equipment of fuel cell system |
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| CN202311702977.3A CN117846948A (en) | 2023-12-11 | 2023-12-11 | Hydrogen pump testing device and testing equipment of fuel cell system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024118578A1 (en) | 2024-07-01 | 2024-11-28 | FEV Group GmbH | Test setup and test procedure for testing gas transport machines |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024118578A1 (en) | 2024-07-01 | 2024-11-28 | FEV Group GmbH | Test setup and test procedure for testing gas transport machines |
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