CN116914200A - Performance test system and test method for fuel cell engine separation ejector - Google Patents
Performance test system and test method for fuel cell engine separation ejector Download PDFInfo
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- CN116914200A CN116914200A CN202310849538.9A CN202310849538A CN116914200A CN 116914200 A CN116914200 A CN 116914200A CN 202310849538 A CN202310849538 A CN 202310849538A CN 116914200 A CN116914200 A CN 116914200A
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- 238000000926 separation method Methods 0.000 title claims abstract description 80
- 239000000446 fuel Substances 0.000 title claims abstract description 35
- 238000011056 performance test Methods 0.000 title claims abstract description 35
- 238000010998 test method Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000012360 testing method Methods 0.000 claims abstract description 51
- 238000004088 simulation Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 71
- 239000001257 hydrogen Substances 0.000 claims description 25
- 229910052739 hydrogen Inorganic materials 0.000 claims description 25
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 description 13
- 239000012530 fluid Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04992—Processes for controlling fuel cells or fuel cell systems characterised by the implementation of mathematical or computational algorithms, e.g. feedback control loops, fuzzy logic, neural networks or artificial intelligence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04097—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with recycling of the reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04104—Regulation of differential pressures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04328—Temperature; Ambient temperature of anode reactants at the inlet or inside the fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04388—Pressure; Ambient pressure; Flow of anode reactants at the inlet or inside the fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04828—Humidity; Water content
- H01M8/04843—Humidity; Water content of fuel cell exhausts
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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
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Abstract
The invention provides a performance test system and a performance test method for a separation injector of a fuel cell engine, which relate to the technical field of separation injector tests, wherein the test system comprises an air source module, a front test unit, a rear test unit, a galvanic pile simulation system and a water storage tank, and the air source module is used for supplying air to the separation injector to be tested; the gas introduced into the separation ejector is detected by a front test unit; the post test unit is used for detecting the gas from the separation ejector, the electric pile simulation system is used for simulating an electric pile, the electric pile simulation system is used for receiving the gas from the separation ejector and simulating the changes of pressure drop, humidity, temperature and consumption after the gas enters the electric pile, and a gas outlet of the electric pile simulation system is communicated with a secondary gas flow inlet of the separation ejector; a humidifier is arranged on a pipeline at the upstream of a gas outlet of the electric pile simulation system; the water storage tank is communicated with a water outlet of the separation ejector. The scheme provided by the invention can widen the range of the test working condition.
Description
Technical Field
The invention relates to the technical field of performance test of a separation ejector, in particular to a performance test system and a performance test method of a separation ejector of a fuel cell engine.
Background
In recent years, the problems of energy crisis and environmental pollution are increasingly serious in the global scope, new energy fields are greatly developed in various countries in the world, hydrogen energy is used as clean energy, and the advantages of high energy density, no pollution of reaction products, abundant reserves and the like are widely paid attention to, so that proton exchange membrane fuel cells are greatly developed in the automobile field. The main parts in the hydrogen circulation system of the fuel cell engine comprise an ejector, a gas-water separator, a humidifier and the like, wherein the ejector plays an important role in improving the hydrogen utilization rate and the efficiency of the fuel cell engine system, and the gas-water separator can separate water generated by the reaction in the electric pile from gas so as to ensure the water balance in the electric pile. The separation ejector is used for integrally designing the ejector and the gas-water separator, so that the space can be saved, and the functions of high-power-range hydrogen ejection circulation and water-vapor separation are realized.
In the prior art, a plurality of fuel cell separation ejectors or ejector testing systems exist, however, each system has defects, for example, patent document CN115342863A discloses a fuel cell separation ejector testing system and a testing method, but the testing working condition is not comprehensive enough only aiming at the working condition that a pile outlet contains unsaturated moisture gas, and after experimental gas is replaced in the testing process, no clear requirement is made on a flowmeter, the cost is increased when the flowmeter is replaced, and the testing process is complex. Patent document CN110838591a discloses a fuel cell ejector testing system and testing method, but the ejector fluid of the simulated galvanic pile outlet does not separate water through the gas-water separator, which can affect the performance and testing of the ejector, and the influence of water on the ejector ejection coefficient of the ejector is not considered.
Based on this, a new solution is urgently needed to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a performance test system and a performance test method for a fuel cell engine separation ejector, which are used for solving the problems in the prior art and widening the range of test working conditions.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a performance test system of a fuel cell engine separation ejector, which comprises the following components:
the air source module is used for supplying air to the separation ejector to be tested;
the gas introduced into the separation ejector is detected by the front test unit;
the rear test unit is used for detecting the gas from the separation ejector and calculating the ejection coefficient according to the data detected by the rear test unit and the front test unit;
the electric pile simulation system is used for simulating an electric pile, and is used for receiving the gas from the separation ejector and simulating the changes of pressure drop, humidity, temperature and consumption after the gas enters the electric pile, and a gas outlet of the electric pile simulation system is communicated with a secondary gas flow inlet of the separation ejector; a humidifier is arranged on a pipeline at the upstream of a gas outlet of the pile simulation system and is used for adjusting the water vapor saturation of exhaust gas;
the water storage tank is communicated with a water outlet of the separation ejector; and calculating the gas-water separation efficiency according to the water adding amount of the humidifier and the water storage amount in the water storage tank.
Preferably, the air source module comprises a high-pressure hydrogen cylinder, a high-pressure nitrogen cylinder and a first three-way valve, and three ends of the first three-way valve are respectively communicated with the high-pressure hydrogen cylinder, the high-pressure nitrogen cylinder and the front test unit; the flowmeter adopted in the fuel cell engine separation ejector performance test system is an online adjustable flowmeter.
Preferably, the water storage tank is also capable of communicating with the humidifier.
Preferably, the pile simulation system further comprises a hydrogen recovery unit and a trim valve, the trim valve is communicated with a circulation pipeline of the pile simulation system, and the hydrogen recovery unit is communicated with the trim valve.
Preferably, the front test unit includes a first pressure reducing valve, an electromagnetic proportional valve, a first temperature sensor, a first mass flow meter, a check valve, and a first pressure sensor in this order along the direction of gas flow.
Preferably, the rear test unit includes a second pressure sensor, a second temperature sensor, and a second mass flow meter in this order along the direction of the gas flow.
Preferably, the galvanic pile simulation system comprises a PTC heater, a third temperature sensor, a second pressure reducing valve, a third pressure sensor, a second three-way valve, the humidifier, a humidity sensor and a hydrogen recovery unit; the PTC heater, the third temperature sensor, the fine tuning valve, the second pressure reducing valve, the third pressure sensor, the second three-way valve, the humidifier and the humidity sensor are sequentially arranged along the flowing direction of gas circulation.
The invention also provides a performance test method of the fuel cell engine separation injector, which is tested by using the performance test system of the fuel cell engine separation injector, and comprises the following steps: adopting a humidifier to adjust the water vapor saturation of the gas so as to simulate the stack exhaust under different working conditions, and calculating the injection coefficient according to the data detected by the rear test unit and the front test unit; and calculating the gas-water separation efficiency according to the water adding amount of the humidifier and the water storage amount in the water storage tank.
Compared with the prior art, the invention has the following technical effects:
1. the performance test system for the fuel cell engine separation ejector can detect the ejection coefficient and the separation efficiency at the same time.
2. The humidifier is arranged on the pipeline at the upstream of the gas outlet of the galvanic pile simulation system and is used for adjusting the humidity of the exhaust gas or the flow of liquid water carried by supersaturated gas, so that the performance of the separation ejector under various working conditions is tested.
3. The flowmeter used in the invention can be adjusted on line to adapt to measuring different gases, and the flowmeter does not need to be replaced after the gases are switched, so that the experimental cost can be reduced, and the experimental flow is simplified.
4. The invention fully simulates the influence of various factors of the hydrogen circulation system of the fuel cell engine on the test result, such as the influence of humidity on the injection coefficient, and the like, and can realize the recycling of moisture and gas.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a fuel cell engine separation injector performance test system according to a first embodiment;
fig. 2 is a flow chart of a performance test method of a separation injector of a fuel cell engine according to the second embodiment;
in the figure: 1-a high-pressure hydrogen cylinder; 2-a high-pressure nitrogen cylinder; 3-a first three-way valve; 4-a first pressure reducing valve; 5-an electromagnetic proportional valve; 6-a first temperature sensor; 7-a first mass flowmeter; 8-check valve; 9-a first pressure sensor; 10-separating an ejector; 11-a second pressure sensor; 12-a second temperature sensor; 13-a second mass flowmeter; 14-PTC heater; 15-a third temperature sensor; 16-a second pressure relief valve; 17-a third pressure sensor; 18-a second three-way valve; 19-a third mass flowmeter; 20-a fine tuning valve; 21-a hydrogen recovery device; 22-a third three-way valve; 23-exhaust port; 24-humidifier; 25-humidity sensor; 26-fourth pressure sensor; 27-a manual valve; 28-a water storage tank; 29-a liquid level sensor; 30-a circulating water pump; 31-an air source module; 32-a front test unit; 33-a post-test unit; 34-galvanic pile simulation system;
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a performance test system and a performance test method for a fuel cell engine separation ejector, which are used for solving the problems in the prior art and widening the range of test working conditions.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
The embodiment provides a performance test system for a fuel cell engine separation injector, which comprises a gas source module 31, a front test unit 32, a rear test unit 33, a pile simulation system 34 and a water storage tank 28, as shown in fig. 1.
Wherein the air source module 31 is used for supplying air to the separation injector 10 to be tested.
The front test unit 32 sequentially comprises a first pressure reducing valve 4, an electromagnetic proportional valve 5, a first temperature sensor 6, a first mass flowmeter 7, a check valve 8 and a first pressure sensor 9 along the gas flow direction, and the gas from the gas source module 31 is detected by the front test unit 32 and then is introduced into the separation injector 10.
The rear test unit 33 sequentially comprises a second pressure sensor 11, a second temperature sensor 12 and a second mass flowmeter 13 along the gas flowing direction, the rear test unit 33 is used for detecting the gas coming out of the separation injector 10, and the injection coefficient is calculated according to the data detected by the rear test unit 33 and the front test unit 32.
The electric pile simulation system 34 comprises a PTC heater 14, a third temperature sensor 15, a second pressure reducing valve 16, a third pressure sensor 17, a second three-way valve 18, a humidifier 24, a humidity sensor 25 and a fine tuning valve 20, wherein the PTC heater 14, the third temperature sensor 15, the second pressure reducing valve 16, the third pressure sensor 17, the second three-way valve 18, the humidifier 24 and the humidity sensor 25 are sequentially arranged along the flowing direction of gas circulation, the electric pile simulation system 34 is used for simulating an electric pile, the electric pile simulation system 34 is used for receiving gas from the separation injector 10 and simulating changes of pressure drop, humidity, temperature and consumption of the gas after the gas enters the electric pile, and a gas outlet of the electric pile simulation system 34 is communicated with a secondary gas flow inlet of the separation injector 10; the secondary air flow inlet is communicated with the air-water separation component, a humidifier 24 is arranged on a pipeline at the upstream of the air outlet of the electric pile simulation system 34, and the humidifier 24 is used for adjusting the water vapor saturation of the exhaust gas; the micro-tuning valve 20 is communicated with a circulation pipeline of the electric pile simulation system 34, the electric pile simulation system 34 can accurately simulate changes of pressure drop, humidity and temperature of gas entering the electric pile, the consumption of the gas entering the electric pile can be accurately controlled according to the opening degree of the micro-tuning valve 20, and the humidity of the gas at the outlet of the electric pile or the flow of liquid water carried by supersaturated gas can be simulated through the humidifier 24.
The water storage tank 28 is communicated with a water outlet of the separation injector 10; the gas-water separation efficiency is calculated based on the amount of water supplied from the humidifier 24 and the amount of water stored in the water storage tank 28. Preferably, a liquid level sensor 29 is arranged in the water storage tank 28, and the liquid level sensor 29 detects the liquid level change in the water storage tank 28 and transmits the liquid level change to an upper computer to calculate the separation efficiency.
The fuel cell engine separation ejector performance test system provided by the embodiment can detect the ejection coefficient and the separation efficiency at the same time. And the humidifier 24 in the galvanic pile simulation system 34 is used for adjusting the humidity of the exhaust gas, so as to realize the performance test of the separation ejector under various working conditions.
A manual valve 27 is also provided between the gas outlet of the stack simulation system 34 and the secondary gas inlet of the separation eductor 10.
In some embodiments, humidifier 24 is an ultrasonic humidifier, and is configured with a level sensor 29 to periodically transmit the level of liquid water in storage tank 28.
In some embodiments, the gas source module 31 includes a high-pressure hydrogen cylinder 1, a high-pressure nitrogen cylinder 2 and a first three-way valve 3, safety valves are respectively arranged on the high-pressure hydrogen cylinder 1 and the high-pressure nitrogen cylinder 2, and three ends of the first three-way valve 3 are respectively communicated with the high-pressure hydrogen cylinder 1, the high-pressure nitrogen cylinder 2 and the front test unit 32; the flowmeter adopted in the fuel cell engine separation ejector performance test system can be an online adjustable flowmeter, and the flowmeter can be a mass flowmeter or a volume flowmeter.
Specifically, 20 series standard gas mass flow meters manufactured by ALICATScific corporation, U.S. can be used.
The flowmeter that this embodiment used can be adjusted on line in order to adapt to the different gases of measurement, does not need to change the flowmeter after changing gas, can reduce the experiment cost, simplifies the experimental procedure.
In some embodiments, the water storage tank 28 can also communicate with the humidifier 24 to further enable recycling of the water.
In some embodiments, the stack simulation system 34 further includes a hydrogen recovery unit in communication with the trim valve 20 for recovering hydrogen, and the trim valve 20 is in communication with the circulation line of the stack simulation system 34 via the second three-way valve 18.
In some embodiments, the system further comprises an upper computer, and the upper computer controls the whole working process to run smoothly.
The implementation process is that the manual valve 27 is closed, high-pressure gas is introduced to measure the tightness of a pipeline, then the manual valve 27 is opened, the first three-way valve 3 is controlled, the type of gas source is selected, the high-pressure gas passes through the first pressure reducing valve 4 to reach the set pressure, the flow is controlled through the electromagnetic proportional valve 5, and the first pressure reducing valve 4 is controlled until the indication of the first pressure sensor 9 reaches the required value. The working fluid temperature, pressure and flow rate of the separation eductor 10 were tested via the first temperature sensor 6, the first mass flow meter 7 and the first pressure sensor 9. Through the separation ejector 10, the mixed fluid enters the pile simulation system 34 through the second temperature sensor 12, the second pressure sensor 11 and the second mass flowmeter 13, passes through the PTC heater, the second pressure reducing valve 16, the third pressure sensor 17, the second three-way valve 18 and the third three-way valve 22 in the pile simulation system 34, the third three-way valve 22 is connected to the hydrogen recovery device 21 and the exhaust port 23, the fine tuning valve 20 and the third mass flowmeter 19 are connected between the second three-way valve 18 and the third three-way valve 22, the other end of the second three-way valve 18 is connected to the humidifier 24, and the humidity sensor 25 is connected behind the humidifier 24 for simulating the change of the pile outlet humidity. And (3) calculating the consumption gas amounts of the electric stacks with different powers according to the upper computer, controlling the gas discharge amount by the indication of the third mass flowmeter 19 and the opening of the fine tuning valve 20, and simulating the consumption amount of the real gas after entering the electric stacks. The simulated galvanic pile outlet is connected to a fourth pressure sensor 26 connected between the simulated galvanic pile outlet and a separation inlet of the separation injector 10, the simulated galvanic pile outlet enters an injection fluid inlet after passing through a gas-water separation assembly, separated water enters a water storage tank 28 from a water outlet, a liquid level sensor 29 detects the liquid level change in the water storage tank 28 and transmits the liquid level change to an upper computer to calculate separation efficiency, and the water storage tank 28 is connected with a humidifier 24 to realize the recycling of the water.
Example two
The embodiment provides a performance test method for a fuel cell engine separation injector, as shown in fig. 2, by using the performance test system for the fuel cell engine separation injector in the first embodiment, the performance test method includes: adopting a humidifier 24 to adjust the water vapor saturation of the gas so as to simulate the stack exhaust under different working conditions, and calculating the injection coefficient according to the data detected by the rear test unit 33 and the front test unit 32; the gas-water separation efficiency is calculated based on the amount of water supplied from the humidifier 24 and the amount of water stored in the water storage tank 28.
The specific test method is as follows: determining experimental gas, firstly using nitrogen as initial experimental gas, adjusting a first three-way valve 3, fixing the opening of a proportional valve, adjusting a first pressure reducing valve 4 until the reading of a first pressure sensor 9 reaches 8bar, adjusting a second pressure reducing valve 16 according to the simulated stack pressure drop until the reading of a third pressure sensor 17 reaches a required value, calculating the required gas consumption under the working condition, and adjusting a micro-adjusting valve 20 according to a third mass flowmeter 19 to ensure that the exhaust gas consumption is equal to the stack gas consumption. According to the hydrogen flow requirements of different electric pile power air inlets, controlThe opening of the proportional valve is tested under different pile powers, the data of each flow sensor, pressure sensor, humidity sensor 25 and temperature sensor are collected, the flow in unit time measured by the first mass flowmeter 7 and the second mass flowmeter 13 is recorded and recorded as Q 1 、Q 2 . The pressure values of the first pressure sensor 9 and the second pressure sensor 11 are denoted as P 1 、P 2 . The humidifying water quantity in the unit time of the humidifier 24 is recorded as M, and the liquid level sensor 29 measures the liquid level change in the unit time of the water storage tank 28 and is recorded as h t . Separation efficiency = S x h t X ρ/M, where S is the bottom area of the tank 28 and ρ is the density of the water. Injection coefficient
＝Q 2 /Q 1 -1, an injection pressure drop Δp=p 2 -P 1 According to the method, the gas-water separation efficiency and the injection coefficient of the separation injector 10 can be calculated. And switching the experimental gas into hydrogen, and adjusting the flowmeter on line to test.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (8)
1. A fuel cell engine separation injector performance test system is characterized in that: comprising the following steps:
the air source module is used for supplying air to the separation ejector to be tested;
the gas introduced into the separation ejector is detected by the front test unit;
the rear test unit is used for detecting the gas from the separation ejector and calculating the ejection coefficient according to the data detected by the rear test unit and the front test unit;
the electric pile simulation system is used for simulating an electric pile, and is used for receiving the gas from the separation ejector and simulating the changes of pressure drop, humidity, temperature and consumption after the gas enters the electric pile, and a gas outlet of the electric pile simulation system is communicated with a secondary gas flow inlet of the separation ejector; a humidifier is arranged on a pipeline at the upstream of a gas outlet of the pile simulation system and is used for adjusting the water vapor saturation of exhaust gas;
the water storage tank is communicated with a water outlet of the separation ejector; and calculating the gas-water separation efficiency according to the water adding amount of the humidifier and the water storage amount in the water storage tank.
2. The fuel cell engine separation injector performance test system of claim 1, wherein: the air source module comprises a high-pressure hydrogen cylinder, a high-pressure nitrogen cylinder and a first three-way valve, and three ends of the first three-way valve are respectively communicated with the high-pressure hydrogen cylinder, the high-pressure nitrogen cylinder and the front test unit; the flowmeter adopted in the fuel cell engine separation ejector performance test system is an online adjustable flowmeter.
3. The fuel cell engine separation injector performance test system of claim 1, wherein: the water storage tank can also be communicated with the humidifier.
4. The fuel cell engine separation injector performance test system of claim 1, wherein: the pile simulation system further comprises a hydrogen recovery unit and a fine tuning valve, the fine tuning valve is communicated with a circulation pipeline of the pile simulation system and is used for simulating the gas consumption of an actual pile, and the hydrogen recovery unit is communicated with the fine tuning valve.
5. The fuel cell engine separation injector performance test system of claim 1, wherein: the front test unit sequentially comprises a first pressure reducing valve, an electromagnetic proportional valve, a first temperature sensor, a first mass flowmeter, a check valve and a first pressure sensor along the gas flowing direction.
6. The fuel cell engine separation injector performance test system of claim 1, wherein: the rear test unit comprises a second pressure sensor, a second temperature sensor and a second mass flowmeter in sequence along the gas flow direction.
7. The fuel cell engine separation injector performance test system of claim 4, wherein: the pile simulation system comprises a PTC heater, a third temperature sensor, a second pressure reducing valve, a third pressure sensor, a second three-way valve, the humidifier, the fine tuning valve, a humidity sensor and a hydrogen recovery unit; the PTC heater, the third temperature sensor, the second pressure reducing valve, the third pressure sensor, the second three-way valve, the humidifier and the humidity sensor are sequentially disposed along a flow direction of the gas circulation.
8. A fuel cell engine separation injector performance test method is characterized in that: the performance test using the fuel cell engine separation injector of any one of claims 1 to 7, comprising: adopting a humidifier to adjust the water vapor saturation of the gas so as to simulate exhaust under different working conditions, and calculating injection coefficients according to the data detected by the rear test unit and the front test unit; and calculating the gas-water separation efficiency according to the water adding amount of the humidifier and the water storage amount in the water storage tank.
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| CN202310849538.9A CN116914200A (en) | 2023-07-11 | 2023-07-11 | Performance test system and test method for fuel cell engine separation ejector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112952150A (en) * | 2021-02-01 | 2021-06-11 | 佛山仙湖实验室 | Humidifier system for fuel cell engine and humidification method |
| CN114142067A (en) * | 2021-11-26 | 2022-03-04 | 大连锐格新能源科技有限公司 | Testing system and method for temperature control optimization of fuel cell ejector pump air supply system |
| CN115342863A (en) * | 2022-08-25 | 2022-11-15 | 武汉理工大学 | Performance test system and test method for fuel cell separation ejector |
| CN218677223U (en) * | 2022-08-10 | 2023-03-21 | 北京亿华通科技股份有限公司 | Variable humidification system, fuel cell and vehicle |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112952150A (en) * | 2021-02-01 | 2021-06-11 | 佛山仙湖实验室 | Humidifier system for fuel cell engine and humidification method |
| CN114142067A (en) * | 2021-11-26 | 2022-03-04 | 大连锐格新能源科技有限公司 | Testing system and method for temperature control optimization of fuel cell ejector pump air supply system |
| CN218677223U (en) * | 2022-08-10 | 2023-03-21 | 北京亿华通科技股份有限公司 | Variable humidification system, fuel cell and vehicle |
| CN115342863A (en) * | 2022-08-25 | 2022-11-15 | 武汉理工大学 | Performance test system and test method for fuel cell separation ejector |
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