CN114899456A - Pulse type ejector testing device and method for fuel cell - Google Patents
Pulse type ejector testing device and method for fuel cell Download PDFInfo
- Publication number
- CN114899456A CN114899456A CN202210661556.XA CN202210661556A CN114899456A CN 114899456 A CN114899456 A CN 114899456A CN 202210661556 A CN202210661556 A CN 202210661556A CN 114899456 A CN114899456 A CN 114899456A
- Authority
- CN
- China
- Prior art keywords
- electric control
- valve
- pressure
- ejector
- regulating valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 239000000446 fuel Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 16
- 230000001105 regulatory effect Effects 0.000 claims abstract description 99
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000009448 modified atmosphere packaging Methods 0.000 claims description 18
- 239000003507 refrigerant Substances 0.000 claims description 18
- 238000001595 flow curve Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 238000010998 test method Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000001052 transient effect Effects 0.000 claims description 4
- 101001093143 Homo sapiens Protein transport protein Sec61 subunit gamma Proteins 0.000 claims description 3
- 101000694017 Homo sapiens Sodium channel protein type 5 subunit alpha Proteins 0.000 claims description 3
- 101100120905 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) TDH1 gene Proteins 0.000 claims description 3
- 102100027198 Sodium channel protein type 5 subunit alpha Human genes 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 18
- 239000001257 hydrogen Substances 0.000 description 10
- 229910052739 hydrogen Inorganic materials 0.000 description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—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
-
- 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
-
- 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
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
-
- 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
- H01M8/04305—Modeling, demonstration models of fuel cells, e.g. for training purposes
-
- 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
- H01M8/04432—Pressure differences, e.g. between anode and cathode
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a testing device of a pulse type ejector for a fuel cell, which comprises a switch valve, wherein the input end of the switch valve is communicated with a gas source, the output end of the switch valve is communicated with a pressure reducing valve, the output end of the pressure reducing valve is communicated with a gas-liquid heat exchanger, the gas-liquid heat exchanger is simultaneously communicated with a first electric control regulating valve, the temperature control device is communicated with the pressure buffer tank through a second electric control regulating valve, the electric control stop valve is communicated with the ejector, the ejector is communicated with the pressure buffer tank and the electric control proportional valve at the same time, the electric control proportional valve is communicated with the pressure buffer tank, a first flowmeter is arranged on a pipeline between the electric control proportional valve and the pressure buffer tank, and the pressure buffer tank is communicated with the second flowmeter; the device has the advantages of simple structure, good testing effect and the like.
Description
Technical Field
The invention relates to the technical field of operating condition testing of pulse type ejectors, in particular to a testing device and a testing method of a pulse type ejector for a fuel cell.
Background
The anode subsystem of the pem fuel cell system generally uses a hydrogen circulating pump or/and an ejector to deliver the gas at the outlet of the stack to the inlet of the stack, so as to recycle the unreacted hydrogen and humidify the hydrogen entering the stack. The ejector plays a role in conveying fluid in the anode subsystem, and high-pressure hydrogen from a proportional valve or a hydrogen spray valve is utilized to form high-speed jet flow at the position of a nozzle and form a low-pressure area around the nozzle, so that gas at the outlet of a stack of the proton exchange membrane fuel cell system is sucked. The gas is subjected to energy exchange in a mixing pipeline and a diffusion pipeline of the ejector, so that low-pressure gas is converted into high-pressure gas, and circulation of hydrogen is realized. The pulse type ejector intermittently sprays hydrogen into the ejector by using a hydrogen spraying valve, so that the pulsation effect is realized. The pulse ejector can improve the drainage efficiency of the fuel cell stack and improve the discharge rate of impurities. And simultaneously, the nitrogen in the dead area of the anode can be effectively discharged.
Although fuel cell systems using ejectors are increasing, ejector type fuel cell systems are still immature relative to hydrogen circulation pumps, and the understanding of ejectors is still insufficient. Particularly for pulse ejectors, no relevant test equipment is proposed because of the little use. However, the existing patents CN _213779475_ U, CN _110838591_ a, CN _111816898_ a, and CN _215893992_ U are all tested under the condition of steady state (stable flow of the ejector), and cannot measure a system with large fluctuation, such as a pulse ejector.
Therefore, the device and the method for testing the pulse type ejector for the fuel cell are provided, and the problems can be solved.
Disclosure of Invention
The invention aims to solve the technical problem that a pulse type ejector testing device and a method for a fuel cell cannot be used for measuring a system with large fluctuation, namely a pulse type ejector, which is only tested under a steady-state working condition (stable ejector flow), so that the testing device and the method for the pulse type ejector for the fuel cell comprise the following steps:
the input end of the switch valve is communicated with a gas source, the output end of the switch valve is communicated with a pressure reducing valve, the output end of the pressure reducing valve is communicated with a gas-liquid heat exchanger, the gas-liquid heat exchanger is simultaneously communicated with a first electric control regulating valve, an electric control stop valve and a temperature regulating device, the first electric control regulating valve is communicated with the temperature regulating device, the temperature regulating device is communicated with a pressure buffer tank through a second electric control regulating valve, the electric control stop valve is communicated with an ejector, the ejector is simultaneously communicated with the pressure buffer tank and an electric control proportional valve, the electric control proportional valve is communicated with the pressure buffer tank, a first flowmeter is arranged on a pipeline between the electric control proportional valve and the pressure buffer tank, testing mechanisms are arranged on a pipeline between the ejector and the ejector, a pipeline between the ejector and the electric control proportional valve and the pressure buffer tank, and the pressure buffer tank is communicated with a second flowmeter, the second flowmeter is communicated with the first electric control proportional regulating valve and the second electric control proportional regulating valve at the same time, and the first electric control proportional regulating valve and the second electric control proportional regulating valve are communicated with the outlet at the same time.
The pressure buffer tank is provided with an air release port, an input port and a discharge port, the air release port is communicated with the second flowmeter, the input port is communicated with the ejector, and the discharge port is communicated with the first flowmeter.
And a refrigerant coil is also arranged in the pressure buffer tank, one end of the refrigerant coil is communicated with the temperature regulating device, and the other end of the refrigerant coil is communicated with the second electric control regulating valve.
The detection mechanism comprises a first pressure sensor, a first temperature sensor, a second pressure sensor, a third temperature sensor and a third pressure sensor, the first pressure sensor and the first temperature sensor are sequentially arranged on a pipeline between the electric control stop valve and the ejector, the second pressure sensor and the temperature sensor are sequentially arranged on a pipeline between the electric control proportional valve and the ejector, and the third temperature sensor and the third pressure sensor are arranged on the pressure buffer tank.
In another aspect, the invention provides a testing method of a pulse type ejector for a fuel cell, which comprises the following steps:
calibrating the flow of the ejector, and recording the calibration process as S;
calibrating the discharge flow of the pressure buffer tank, and recording the calibration process as SS;
testing the pulse type ejector; the test procedure is noted as SSS.
Injector flow calibration, recording the calibration process as S comprises:
s1, closing the electric control proportional valve and the second electric control regulating valve, wherein the first electric control proportional regulating valve and the second electric control proportional regulating valve are in a complete opening state;
s2 the injector is first set to a target frequency and a target pulse width, and the pressure reducing valve is adjusted so that the average value P of the pressure values displayed by the first pressure sensor average Is a target pressure value P main ；
S3 when P average =P main Then, the temperature value output by the temperature regulating device is regulated to be higher than the target temperature value T main 0.5 ℃ where T is main The value displayed by the first temperature sensor is equal to the value displayed by the first temperature sensor, the opening degree of the first electric control regulating valve is regulated at the same time, and the flow of the refrigerant flowing into the gas-liquid heat exchanger is regulated until the value T displayed by the first temperature sensor 1302 =T main ；
S4 records the flow rate value q in the second flowmeter main ；
S5 Steps S2-S4 are repeated for different operating condition ranges, and finally a MAP of the flow MAP of the injector over the set temperature, frequency and pulse width ranges is obtained.
The different working conditions include: one condition at every 5 c within a preset temperature range, one condition at every 5Hz within a preset frequency range, and one condition at every 2ms within a preset pulse width range.
Pressure buffer tank discharge flow calibration, wherein the step of marking the calibration as SS comprises the following steps:
the SS1 takes the ejector out of the loop and directly communicates the electric control stop valve with the inlet of the ejector;
SS2 closes the electric control proportional valve, the first electric control proportional regulating valve and the second electric control proportional regulating valve,opening the electric control stop valve, slowly opening the pressure reducing valve to enable the pressure value P shown by the third pressure sensor to be 1306 Is raised to the target pressure P back_target Then; keeping the pressure-reducing valve clock in a pressure-regulating state of target pressure;
the SS3 slowly opens the first electric control proportional control valve, and records the opening-flow curve of the first electric control proportional control valve;
the SS4 keeps a full-open state after the first electric control proportional regulating valve is fully opened, slowly opens the second electric control proportional regulating valve, and records the opening-flow curve of the second electric control proportional regulating valve;
SS5 closes the first electric control proportional regulating valve and the second electric control proportional regulating valve;
the SS6 repeats the SS2-SS5 for each target pressure value, thereby obtaining opening-flow curve MAP MAPs at different pressures.
The pressure in the pressure buffer tank is 1.2bar in an initial state, namely the initial value of the third pressure sensor is 1.2 bar;
a target pressure value of 1.2bar to 3.5bar per 0.2bar interval.
Testing the pulse type ejector; recording the test procedure as SSS includes:
the SSS1 is installed back to the ejector, so that the inlet end of the ejector is communicated with the electric control stop valve, and the outlet end of the ejector is communicated with the inlet of the ejector;
the SSS2 closes the electric control proportional valve, the first electric control regulating valve and the second electric control regulating valve, and the first electric control proportional regulating valve and the second electric control proportional regulating valve are in a completely opened state;
SSS3 puts the injector at the set injection frequency f, pulsewidth τ, and interpolates from MAP _ injector to obtain the actual injector flow q m_target ；
SSS4 adjusts the temperature value output by the temperature adjusting device to be higher than the target temperature value T main (the numerical value displayed by the first temperature sensor) is 0.5 ℃, and the opening degree of the first electric control regulating valve is regulated simultaneously, so that the flow of the refrigerant flowing into the gas-liquid heat exchanger is regulated until the numerical value T displayed by the first temperature regulating device 1302 =T main ；
SSS5 based on a given injector target backpressure P back_target Target flow rate q m_target Interpolating the MAP _ back P _ opening to obtain the opening values of the first electric control proportional regulating valve and the second electric control proportional regulating valve;
SSS6 adjusts the electrically controlled proportional valve so that the pressure in the pressure buffer tank is the pressure value P indicated by the third pressure sensor 1306 With the inlet pressure value P of the ejector 1304 Pressure difference Δ P = P 1306 - P 1304 Is a set pressure differential;
SSS7 regulates the second electronically controlled regulator valve, increasing the flow rate such that the temperature in the pressure buffer tank (i.e., the temperature T indicated by the third temperature sensor) 1305 ) Corresponding to a target temperature;
SSS8 pressure in pressure buffer tank 1306 Variance value of
Continuously less than a target variance value
When it is time, the second flow meter (q) starts to be recorded 1403 ) And a first flow meter 11 (q) 11 ) Wherein, wherein
Is a pressure P 1306 Transient average per 100 points:
i is the current count point.
SSS 9: injection ratio RR = q under the working condition 11/ q 1403 。
The implementation of the invention has the following beneficial effects:
1. the pulse type ejector has a simple structure principle, can truly reduce the back pressure of the ejector, simulate the consumption of a galvanic pile and the pressure difference between the ejection port and the return port of the ejector under the condition of pulsation, can truly reflect the transient and steady characteristics of the ejector, and can perfect the vacancy in the aspect of testing the pulse type ejector.
Drawings
FIG. 1 is a system topology diagram of a test setup of the present invention;
FIG. 2 is a graph of upstream pressure versus time for an injector of the present invention;
FIG. 3 is a graph of upstream flow over time with the ejector of the present invention in operation;
FIG. 4 is a topological diagram of the pressure buffer tank flow calibration circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1 to 3 of the specification, the technical problem to be solved in this embodiment is that, in the current experiment only under a steady-state condition (stable injector flow), a system with a large fluctuation, such as a pulse-type injector, cannot be measured, so that a device and a method for testing a pulse-type injector for a fuel cell are provided, and the device and the method for testing a pulse-type injector for a fuel cell include:
the device comprises a switch valve 2, wherein the input end of the switch valve 2 is communicated with a gas source 1, the output end of the switch valve 2 is communicated with a pressure reducing valve 3, the output end of the pressure reducing valve 3 is communicated with a gas-liquid heat exchanger 4, the gas-liquid heat exchanger 4 is simultaneously communicated with a first electric control regulating valve 501, an electric control stop valve 7 and a temperature regulating device 6, the first electric control regulating valve 501 is communicated with the temperature regulating device 6, the temperature regulating device 6 is communicated with a pressure buffer tank 12 through a second electric control regulating valve 502, the electric control stop valve 7 is communicated with an ejector 8, the ejector 8 is communicated with an ejector 9, the ejector 9 is simultaneously communicated with the pressure buffer tank 12 and an electric control proportional valve 10, the electric control proportional valve 10 is communicated with the pressure buffer tank 12, a first flowmeter is arranged on a pipeline between the electric control proportional valve 10 and the pressure buffer tank 12, test mechanisms are arranged on pipelines between the ejector 8 and the ejector 9, between the ejector 9 and the electric control proportional valve 10 and on the pressure buffer tank 12, the pressure buffer tank 12 is communicated with the second flowmeter 11, the second flowmeter 11 is communicated with the first electric control proportional regulating valve and the second electric control proportional regulating valve at the same time, and the first electric control proportional regulating valve and the second electric control proportional regulating valve are communicated with the outlet at the same time.
The pressure buffer tank 12 is provided with an air release port, an input port and a discharge port, the air release port is communicated with the second flowmeter 11, the input port is communicated with the ejector 9, and the discharge port is communicated with the first flowmeter.
A refrigerant coil 15 is further arranged in the pressure buffer tank 12, one end of the refrigerant coil is communicated with the temperature adjusting device 6, and the other end of the refrigerant coil is communicated with the second electric control adjusting valve 502.
The detection mechanism comprises a first pressure sensor 1301, a first temperature sensor 1302, a second temperature sensor 1303, a second pressure sensor 1304, a third temperature sensor 1305 and a third pressure sensor 1306, the first pressure sensor 1301 and the first temperature sensor 1302 are sequentially arranged on a pipeline between the electric control stop valve 7 and the ejector 8, the second pressure sensor 1304 and the temperature sensor are sequentially arranged on a pipeline between the electric control proportional valve 10 and the ejector 9, and the third temperature sensor 1305 and the third pressure sensor 1306 are arranged on the pressure buffer tank 12.
In the present invention, the working fluid (hydrogen, nitrogen) flows out from the gas source 11, and flows into the pressure reducing valve 3 through the on-off valve 22. The pressure reducing valve 3 is used to set the inlet pressure of the injector 8 (the value of the first pressure sensor 1301) to a target value.
The gas-liquid heat exchanger 4 is configured to exchange heat between the refrigerant in the temperature adjustment device 6 and the gas flowing through the inside of the temperature adjustment device, and the first electronically controlled adjustment valve 501 is configured to adjust the flow rate of the refrigerant flowing out of the temperature adjustment device 6 so that the gas passing through the heat exchanger 4 reaches a target temperature (a value indicated by the first temperature sensor 1302).
The electric control stop valve 7 is used for opening and closing a gas path leading to the ejector 8 and playing a role in stopping the gas path to prevent loss and expansion when the ejector 8 fails.
The gas is injected in pulses into the eductor 9 before flowing to the pressure buffer tank 12. The pressure buffer vessel 12 is a cylindrical vessel. The two ends of the tank body are an inlet and an outlet for gas, and a gas release opening 1201 is arranged in the middle of the tank body and connected with a second flow meter 1403. Two electrically controlled proportional control valves 1401 and 1402 connected in parallel are connected to a second flow meter 1403 for simulating the flow q consumed by the stack com Wherein the first electrically controlled proportional control valve 1401 is a valve with smaller adjustable flow (smaller inner diameter of ball valve or smaller throat of flat valve seat), and the second electrically controlled proportional control valve 1402 is a valve with larger adjustable flow.
The pressure buffer tank 12 is additionally provided with a refrigerant coil 15 which is connected with the temperature adjusting device 6 to achieve the purpose of adjusting the temperature of the gas (the temperature displayed by the second temperature sensor 1303) flowing back into the ejector 9.
One part of gas in the pressure tank flows out through the vent 1201, and the other part of gas flows back into the first flowmeter 11 through the discharge port 1203 of the pressure buffer tank 12, passes through the electronic control proportional valve 10 and finally flows back to the return port of the ejector 9.
In another aspect, the present invention provides a testing method for a pulse type injector 9 for a fuel cell, the testing method including:
calibrating the flow of the ejector 8, and recording the calibration process as S;
calibrating the discharge flow of the pressure buffer tank 12, and recording the calibration process as SS;
testing by using a pulse type ejector 9; the test procedure is noted as SSS.
s1, the electric control proportional valve 10 and the second electric control regulating valve 502 are closed, and the first electric control proportional regulating valve 1401 and the second electric control proportional regulating valve 1402 are in a fully open state;
s2 the injector 8 is first set to a target frequency and a target pulse width, and the pressure reducing valve 3 is adjusted so that the average value P of the pressure values displayed by the first pressure sensor 1301 is average Is a target pressure value P main ；
S3 when P average =P main Then, the temperature value output by the temperature adjusting device 6 is adjusted to be higher than the target temperature value T main 0.5 ℃ where T is main The opening degree of the first electrically controlled regulating valve 501 is adjusted to be equal to the value displayed by the first temperature sensor 1302, and the flow rate of the refrigerant flowing into the gas-liquid heat exchanger 4 is adjusted to reach the value T displayed by the first temperature sensor 1302 1302 =T main ；
S4 records the flow rate value q in the second flow meter 11 main ；
S5 Steps S2-S4 are repeated for different ranges of operating conditions, and finally a MAP of the flow rate MAP of the injector 8 is obtained over the set range of temperature, frequency and pulse width.
The different working conditions include: one condition at every 5 c within a preset temperature range, one condition at every 5Hz within a preset frequency range, and one condition at every 2ms within a preset pulse width range.
The pressure buffer tank 12 discharge flow calibration, and the marking process as SS comprises the following steps:
the SS1 takes the ejector 8 out of the loop and directly communicates the electrically controlled stop valve 7 with the inlet of the ejector 9;
SS2 closes the electric control proportional valve 10, the first electric control proportional regulating valve and the second electric control proportional regulating valve, opens the electric control stop valve 7, slowly opens the reducing valve 3 to enable the pressure value P shown by the third pressure sensor 1306 1306 Is raised to the target pressure P back_target Then; keeping the clock of the pressure reducing valve 3 in a pressure regulating state of target pressure;
the SS3 slowly opens the first electric control proportional control valve, and records the opening-flow curve of the first electric control proportional control valve;
the SS4 keeps a full-open state after the first electric control proportional regulating valve is fully opened, slowly opens the second electric control proportional regulating valve, and records the opening-flow curve of the second electric control proportional regulating valve;
SS5 closes the first electric control proportional regulating valve and the second electric control proportional regulating valve;
the SS6 repeats the SS2-SS5 for each target pressure value, thereby obtaining opening-flow curve MAP MAPs at different pressures.
The pressure in the pressure buffer tank 12 is 1.2bar at the initial state, that is, the initial value of the third pressure sensor 1306 is 1.2 bar;
a target pressure value of 1.2bar to 3.5bar per 0.2bar interval.
Testing by a pulse type ejector 9; recording the test procedure as SSS includes:
the SSS1 is installed back to the ejector 8, so that the inlet end of the ejector 8 is communicated with the electrically-controlled stop valve 7, and the outlet end of the ejector 8 is communicated with the inlet of the ejector 9;
the SSS2 closes the electric control proportional valve 10, the first electric control regulating valve 501 and the second electric control regulating valve 502, and the first electric control proportional regulating valve and the second electric control proportional regulating valve are in a completely opened state;
SSS3 brings injector 8 at a set injection frequency f, pulsewidth τ, and interpolates from MAP _ injector to obtain the actual injector 8 flow q m_target ；
SSS4 adjusts the temperature value output by temperature adjusting device 6 to be higher than target temperature value T main (the numerical value displayed by the first temperature sensor 1302) is 0.5 ℃, and the opening degree of the first electric control adjusting valve 501 is adjusted simultaneously, so that the flow rate of the refrigerant flowing into the gas-liquid heat exchanger 4 is adjusted until the numerical value T displayed by the first temperature adjusting device 6 1302 =T main ；
SSS5 based on a given ejector 9 target back pressure P back_target Target flow rate q m_target Interpolating the MAP _ back P _ opening to obtain the opening values of the first electric control proportional regulating valve and the second electric control proportional regulating valve;
SSS6 regulates electrically controlled proportional valve 10 such that the pressure in pressure buffer tank 12, i.e., the pressure value P indicated by third pressure sensor 1306 1306 The pressure value P of the inlet of the ejector 9 1304 Pressure difference Δ P = P 1306 - P 1304 Is a set pressure differential;
SSS7 regulates second electronically controlled regulator valve 502, increasing the flow rate such that the temperature in pressure buffer tank 12 (i.e., temperature T indicated by third temperature sensor 1305) 1305 ) Corresponding to a target temperature;
SSS8 as a function of pressure P in pressure buffer tank 12 1306 Variance value of (2)
Continuously less than a target variance value
At this time, the second flow meter 11 starts to be recorded (q) 1403 ) And a first flow meter 11 (q) 11 ) Wherein, wherein
Is a pressure P 1306 Transient average per 100 points:
i is the current count point.
SSS 9: injection ratio RR = q under the working condition 11/ q 1403 。
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a pulsed ejector testing arrangement for fuel cell, its characterized in that includes the ooff valve, and the input of ooff valve is linked together with the air supply, the output of ooff valve is linked together with the relief pressure valve, the output of relief pressure valve is linked together with gas-liquid heat exchanger, and gas-liquid heat exchanger is linked together with first automatically controlled governing valve, automatically controlled stop valve and temperature regulation apparatus simultaneously, and first automatically controlled governing valve is linked together with temperature regulation apparatus, and temperature regulation apparatus is linked together through second automatically controlled governing valve and pressure buffer tank, and automatically controlled stop valve is linked together with the sprayer, and the sprayer is linked together with pressure buffer tank and automatically controlled proportional valve simultaneously, and automatically controlled proportional valve is linked together with the pressure buffer tank, is provided with first flowmeter on the pipeline between sprayer and the sprayer, on the pipeline between the sprayer, The pipeline between the ejector and the electric control proportional valve and the pressure buffer tank are provided with a testing mechanism, the pressure buffer tank is communicated with a second flowmeter, the second flowmeter is communicated with a first electric control proportional regulating valve and a second electric control proportional regulating valve at the same time, and the first electric control proportional regulating valve and the second electric control proportional regulating valve are communicated with an outlet at the same time.
2. The fuel cell pulse type ejector testing device according to claim 1, wherein the pressure buffer tank is provided with a relief port, an input port and an exhaust port, the relief port is communicated with the second flow meter, the input port is communicated with the ejector, and the exhaust port is communicated with the first flow meter.
3. The testing device of the pulse type ejector for the fuel cell according to claim 2, wherein a refrigerant coil is further arranged in the pressure buffer tank, one end of the refrigerant coil is communicated with the temperature regulating device, and the other end of the refrigerant coil is communicated with the second electric control regulating valve.
4. The testing device of the pulse type ejector for the fuel cell according to claim 3, wherein the detection mechanism comprises a first pressure sensor, a first temperature sensor, a second pressure sensor, a third temperature sensor and a third pressure sensor, the first pressure sensor and the first temperature sensor are sequentially arranged on a pipeline between the electric control stop valve and the ejector, the second pressure sensor and the temperature sensor are sequentially arranged on a pipeline between the electric control proportional valve and the ejector, and the third temperature sensor and the third pressure sensor are arranged on the pressure buffer tank.
5. A testing method of a pulse type ejector for a fuel cell is characterized by comprising the following steps:
calibrating the flow of the ejector, and recording the calibration process as S;
calibrating the discharge flow of the pressure buffer tank, and recording the calibration process as SS;
testing the pulse type ejector; the test procedure is noted as SSS.
6. The pulsed eductor testing method of claim 5, wherein the injector flow calibration, and wherein the recording of the calibration as S comprises:
s1, closing the electric control proportional valve and the second electric control regulating valve, wherein the first electric control proportional regulating valve and the second electric control proportional regulating valve are in a complete opening state;
s2 the injector is first set to a target frequency and a target pulse width, and the pressure reducing valve is adjusted so that the average value P of the pressure values displayed by the first pressure sensor average Is a target pressure value P main ；
S3 when P average =P main By regulating the temperature value output by the temperature regulating deviceTo above a target temperature value T main 0.5 ℃ where T is main The value displayed by the first temperature sensor is equal to the value displayed by the first temperature sensor, the opening degree of the first electric control regulating valve is regulated at the same time, and the flow of the refrigerant flowing into the gas-liquid heat exchanger is regulated until the value T displayed by the first temperature sensor 1302 =T main ；
S4 records the flow rate value q in the second flowmeter main ；
S5 Steps S2-S4 are repeated for different operating condition ranges, and finally a MAP of the flow MAP of the injector over the set temperature, frequency and pulse width ranges is obtained.
7. The pulsed ejector testing method for fuel cells according to claim 6, wherein the different operating conditions include: one condition at every 5 c within a preset temperature range, one condition at every 5Hz within a preset frequency range, and one condition at every 2ms within a preset pulse width range.
8. The pulsed eductor test method of claim 7 for a fuel cell wherein the pressure buffer tank discharge flow calibration, and wherein the recording of the calibration as SS comprises:
the SS1 takes the ejector out of the loop and directly communicates the electric control stop valve with the inlet of the ejector;
SS2 closes the electric control proportional valve, the first electric control proportional regulating valve and the second electric control proportional regulating valve, opens the electric control stop valve, slowly opens the pressure reducing valve to enable the pressure value P shown by the third pressure sensor 1306 Is raised to the target pressure P back_target Then; keeping the pressure reducing valve clock in a pressure regulating state of target pressure;
the SS3 slowly opens the first electric control proportional control valve, and records the opening-flow curve of the first electric control proportional control valve;
the SS4 keeps a full-open state after the first electric control proportional regulating valve is fully opened, slowly opens the second electric control proportional regulating valve, and records the opening-flow curve of the second electric control proportional regulating valve;
SS5 closes the first electric control proportional regulating valve and the second electric control proportional regulating valve;
the SS6 repeats the SS2-SS5 for each target pressure value, thereby obtaining opening-flow curve MAP MAPs at different pressures.
9. The testing method of the pulse ejector for the fuel cell according to claim 8, wherein the pressure in the pressure buffer tank is 1.2bar in an initial state, that is, the initial value of the third pressure sensor is 1.2 bar;
1.2bar-3.5bar per interval 0.2bar is a target pressure value.
10. The pulsed eductor testing method for a fuel cell of claim 9, wherein the pulsed eductor test; recording the test procedure as SSS includes:
the SSS1 is installed back to the ejector, so that the inlet end of the ejector is communicated with the electric control stop valve, and the outlet end of the ejector is communicated with the inlet of the ejector;
the SSS2 closes the electric control proportional valve, the first electric control regulating valve and the second electric control regulating valve, and the first electric control proportional regulating valve and the second electric control proportional regulating valve are in a completely opened state;
SSS3 puts the injector at the set injection frequency f, pulsewidth τ, and interpolates from MAP _ injector to obtain the actual injector flow q m_target ；
SSS4 adjusts the temperature value output by the temperature adjusting device to be higher than the target temperature value T main (the numerical value displayed by the first temperature sensor) is 0.5 ℃, and the opening degree of the first electric control regulating valve is regulated simultaneously, so that the flow of the refrigerant flowing into the gas-liquid heat exchanger is regulated until the numerical value T displayed by the first temperature regulating device 1302 =T main ；
SSS5 based on a given injector target backpressure P back_target Target flow rate q m_target Interpolating the MAP _ back P _ opening to obtain the opening values of the first electric control proportional regulating valve and the second electric control proportional regulating valve;
SSS6 adjusts the electrically controlled proportional valve so that the pressure in the pressure buffer tank is the pressure value P indicated by the third pressure sensor 1306 The pressure value P of the inlet of the ejector 1304 Pressure ofDifference Δ P = P 1306 - P 1304 Is a set pressure differential;
SSS7 regulates the second electronically controlled regulator valve, increasing the flow rate such that the temperature in the pressure buffer tank (i.e., the temperature T indicated by the third temperature sensor) 1305 ) Corresponding to a target temperature;
SSS8 pressure in pressure buffer tank 1306 Variance value of
Continuously less than a target variance value
When it is time, the second flow meter (q) starts to be recorded 1403 ) And a first flow meter 11 (q) 11 ) Wherein, wherein
Is a pressure P 1306 Transient average per 100 points:
i is the current counting point;
SSS 9: injection ratio RR = q under the working condition 11/ q 1403 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210661556.XA CN114899456B (en) | 2022-06-13 | 2022-06-13 | Pulse ejector testing device and method for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210661556.XA CN114899456B (en) | 2022-06-13 | 2022-06-13 | Pulse ejector testing device and method for fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114899456A true CN114899456A (en) | 2022-08-12 |
| CN114899456B CN114899456B (en) | 2023-04-28 |
Family
ID=82728282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210661556.XA Active CN114899456B (en) | 2022-06-13 | 2022-06-13 | Pulse ejector testing device and method for fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114899456B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008016403A (en) * | 2006-07-10 | 2008-01-24 | Toyota Motor Corp | Fuel cell system |
| GB201317270D0 (en) * | 2013-09-30 | 2013-11-13 | Intelligent Energy Ltd | Water removal in a fuel cell |
| WO2015170416A1 (en) * | 2014-05-09 | 2015-11-12 | 日産自動車株式会社 | Fuel-cell system and method for controlling fuel-cell system |
| CN110838591A (en) * | 2019-12-18 | 2020-02-25 | 上海创胤能源科技有限公司 | Test system and test method for fuel cell ejector |
| CN112072145A (en) * | 2020-09-11 | 2020-12-11 | 北京亦嘉洁驱系统科技有限公司 | Hydrogen pressure reduction regulation and control system, method and equipment, battery system and design method |
| CN113130941A (en) * | 2021-04-20 | 2021-07-16 | 北京亦嘉洁驱系统科技有限公司 | Hydrogen supply system of proton exchange membrane hydrogen fuel cell and control method |
| CN213779475U (en) * | 2020-12-22 | 2021-07-23 | 上海重塑能源科技有限公司 | Test system for ejector for fuel cell |
| CN214471694U (en) * | 2021-02-04 | 2021-10-22 | 深圳市氢蓝时代动力科技有限公司 | Ejector performance testing device |
| 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 |
-
2022
- 2022-06-13 CN CN202210661556.XA patent/CN114899456B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008016403A (en) * | 2006-07-10 | 2008-01-24 | Toyota Motor Corp | Fuel cell system |
| GB201317270D0 (en) * | 2013-09-30 | 2013-11-13 | Intelligent Energy Ltd | Water removal in a fuel cell |
| WO2015044683A1 (en) * | 2013-09-30 | 2015-04-02 | Intelligent Energy Limited | Pulse modulated inlet pressure for water removal in a fuel cell |
| WO2015170416A1 (en) * | 2014-05-09 | 2015-11-12 | 日産自動車株式会社 | Fuel-cell system and method for controlling fuel-cell system |
| CN110838591A (en) * | 2019-12-18 | 2020-02-25 | 上海创胤能源科技有限公司 | Test system and test method for fuel cell ejector |
| CN112072145A (en) * | 2020-09-11 | 2020-12-11 | 北京亦嘉洁驱系统科技有限公司 | Hydrogen pressure reduction regulation and control system, method and equipment, battery system and design method |
| CN213779475U (en) * | 2020-12-22 | 2021-07-23 | 上海重塑能源科技有限公司 | Test system for ejector for fuel cell |
| CN214471694U (en) * | 2021-02-04 | 2021-10-22 | 深圳市氢蓝时代动力科技有限公司 | Ejector performance testing device |
| CN113130941A (en) * | 2021-04-20 | 2021-07-16 | 北京亦嘉洁驱系统科技有限公司 | Hydrogen supply system of proton exchange membrane hydrogen fuel cell and control 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114899456B (en) | 2023-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8387441B2 (en) | Injector flow measurement for fuel cell applications | |
| CN209927167U (en) | Fuel cell ejector test system | |
| CN105797890B (en) | A kind of spraying device for icing simulation equipment | |
| CN110374856B (en) | Hydrogen injection pump test system for fuel cell | |
| WO2008047211A1 (en) | Fuel cell system and method for adjusting moisture content in a polymer electrolyte membrane | |
| CN215893992U (en) | Hydrogen fuel cell hydrogen circulation ejector performance test system | |
| CN110242552B (en) | Water pump performance test system | |
| CN112271311A (en) | Control system and method of fuel cell | |
| US10954904B2 (en) | Pressure-regulating device for a fuel consumption measurement system and fuel consumption measurement system | |
| US8701468B2 (en) | Flow estimation based on anode pressure response in fuel cell system | |
| CN214471694U (en) | Ejector performance testing device | |
| CN108519236A (en) | Fountain vehicle charge air cooler bench test thermostatically-controlled equipment | |
| CN114899456B (en) | Pulse ejector testing device and method for fuel cell | |
| CN101120475B (en) | Fuel cell system comprising a metering unit | |
| CN213779475U (en) | Test system for ejector for fuel cell | |
| CN114046972B (en) | Testing device and testing method for gas-liquid separator | |
| CN217214798U (en) | Fuel cell ejector testing system | |
| CN112595491B (en) | Cavitation pipe liquid flow test method | |
| CN212161981U (en) | Control system of air-cooled fuel cell stack | |
| CN220021178U (en) | Testing device for parts on air path and hydrogen path | |
| CN113903957B (en) | Pile hydrogen circulation simulation device and simulation method thereof | |
| CN217841754U (en) | Double-flow low-pressure cylinder water spraying temperature reduction system of steam turbine and steam turbine | |
| CN103324184A (en) | Fuel gas transportation and distribution monitoring system | |
| CN213660460U (en) | Fuel cell gas humidifying system | |
| CN216348765U (en) | Multi-functional humidifier capability test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |