CN114151321A - Hydrogen circulating pump test system for fuel cell engine and test method thereof - Google Patents
Hydrogen circulating pump test system for fuel cell engine and test method thereof Download PDFInfo
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- CN114151321A CN114151321A CN202111460340.9A CN202111460340A CN114151321A CN 114151321 A CN114151321 A CN 114151321A CN 202111460340 A CN202111460340 A CN 202111460340A CN 114151321 A CN114151321 A CN 114151321A
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- 238000012360 testing method Methods 0.000 title claims abstract description 61
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000001257 hydrogen Substances 0.000 title claims abstract description 56
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 56
- 239000000446 fuel Substances 0.000 title claims abstract description 42
- 238000010998 test method Methods 0.000 title abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 claims abstract 2
- 239000007789 gas Substances 0.000 claims description 116
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 87
- 239000000498 cooling water Substances 0.000 claims description 56
- 239000007788 liquid Substances 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 230000003020 moisturizing effect Effects 0.000 claims 4
- 230000001276 controlling effect Effects 0.000 description 9
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a hydrogen circulating pump test system for a fuel cell engine and a test method thereof, wherein the test system comprises a circulating pump, an inlet of the circulating pump is connected with a hydrogen source through a first pipeline, a proportional valve, a first three-way valve and a temperature control heat exchange assembly are sequentially arranged on the first pipeline according to the flow direction, a first pressure sensor, a first temperature sensor and a humidity sensor are arranged on the first pipeline at the downstream of the temperature control heat exchange assembly, a second temperature sensor, a second pressure sensor, a second three-way valve and a throttle valve are arranged on a second pipeline between an outlet of the circulating pump and the first three-way valve, the second temperature sensor and the second pressure sensor are positioned at the upstream of the second three-way valve and the throttle valve, and the second three-way valve is connected with a pressure release valve through a third pipeline. The test system can enable the circulating pump to completely simulate the running state environment of the fuel cell engine, and evaluate whether the hydrogen circulating pump for the fuel cell engine can meet the use condition or not under the environment conditions of completely simulating temperature, pressure and humidity.
Description
Technical Field
The invention belongs to the technical field of hydrogen circulating pump testing, and particularly relates to a hydrogen circulating pump testing system for a fuel cell engine and a testing method thereof.
Background
In an actual application scene of the hydrogen circulating pump for the fuel cell engine, the inlet rated flow, the inlet temperature, the inlet pressure, the outlet temperature and the outlet pressure of the circulating pump need to be monitored, and whether the circulating pump can meet the application scene of the fuel cell engine system needs to be verified in the early stage.
Chinese patent CN112392711A discloses a method and a device for testing a hydrogen circulation pump, the method comprising: acquiring an environmental parameter and a test parameter corresponding to each working condition; each environment parameter corresponds to a group of test parameters, each group of test parameters comprises at least two test parameters, each environment parameter comprises an outlet pressure value of the hydrogen circulating pump, and each test parameter comprises a pressure rise value, a current rotating speed and a flow value; under each of the environmental parameters, performing the following steps for each of the parameters: starting the hydrogen circulating pump, adjusting the current rotating speed of the hydrogen circulating pump, adjusting an electric proportional valve, adjusting the pressure rise value of the hydrogen circulating pump, and recording the flow value corresponding to each current rotating speed and each pressure rise value. The intercooler in this patent can only be used as the heat dissipation, test system can not control the temperature, and this patent does not have the steady voltage system of control front end pressure and the steady voltage system of exhaust end pressure, can not simulate the pressure environment condition of fuel cell engine running state completely, and this patent does not have circulating pump controller heat dissipation cooling system, and then influences circulating pump controller's life, and this patent does not have detection and the control system of relative humidity under the test environment, can not simulate the humidity environment condition of fuel cell engine running state completely.
Chinese patent CN110578679A discloses a testing device for a gas circulation pump, comprising: the inlet working condition regulating and controlling passage comprises an inlet air pressure regulating and controlling passage and an inlet temperature and humidity regulating and controlling passage, and the output end of the inlet air pressure regulating and controlling passage is connected with the inlet temperature and humidity regulating and controlling passage and is connected with the inlet end of the tested circulating pump; the inlet working condition detection device is arranged on the inlet working condition regulation and control passage; the input end of the outlet working condition regulating passage is connected with the outlet end of the tested circulating pump; and the outlet working condition detection device is arranged on the outlet working condition regulation and control passage. The hydrogen source that this patent used is compressed air, and composition and hydrogen difference are great, and quality and flow resistance can not effectively simulate the service environment of hydrogen circulating pump, and the test result is not accurate, more is fit for the test of air compressor device, and this patent can not realize the pulse control of pressure.
Disclosure of Invention
The invention provides a hydrogen circulating pump test system for a fuel cell engine and a test method thereof, wherein the test system can enable the hydrogen circulating pump for the fuel cell engine to completely simulate the environment of the running state of the fuel cell engine, evaluate whether the hydrogen circulating pump for the fuel cell engine can meet the use condition under the environment conditions of completely simulating temperature and pressure, and provide effective data for further development of the circulating pump.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a hydrogen circulating pump test system for fuel cell engine, includes the circulating pump, the circulating pump entry is through first pipe connection hydrogen source or liquid medium source, be equipped with proportional valve, first three-way valve and accuse temperature heat exchange assembly in proper order according to the flow direction on the first pipeline, be equipped with first pressure sensor, first temperature sensor and humidity transducer on the first pipeline of accuse temperature heat exchange assembly low reaches department, the circulating pump export passes through the second pipe connection with first three-way valve, be equipped with second temperature sensor, second pressure sensor, second three-way valve and choke valve on the second pipeline, second temperature sensor and second pressure sensor are in the upper reaches department of second three-way valve and choke valve, the second three-way valve passes through the third pipe connection relief valve.
Further, hydrogen circulating pump test system still includes control system, control system includes the circulating pump controller, first pressure sensor, first temperature sensor, humidity transducer, second temperature sensor, second pressure sensor and circulating pump motor all with control system's signal input part is connected, control system's signal output part respectively with proportional valve, accuse temperature heat exchange assemblies and relief valve are connected.
Further, the circulating pump controller is connected with a heat exchange assembly, the heat exchange assembly comprises a water replenishing water tank, a first cooling water pump is connected to the output end of the water replenishing water tank, the output end of the first cooling water pump is connected with the cooling water inlet of the circulating pump controller, the cooling water outlet of the circulating pump controller is connected with the input end of the water replenishing water tank, the cooling water outlet of the circulating pump controller is provided with a radiator on a cooling pipeline between the water replenishing water tanks, and the radiator is provided with a cooling fan.
Furthermore, a third temperature sensor is arranged on a cooling pipeline between the first cooling water pump and a cooling water inlet of the circulating pump controller, the third temperature sensor is connected with a signal input end of the control system, and a signal output end of the control system is connected with the cooling fan.
Further, accuse temperature heat transfer subassembly includes the intercooler, the intercooler sets up on the first pipeline, accuse temperature water tank is connected to the output of intercooler, be equipped with fourth temperature sensor in the accuse temperature water tank, second cooling water pump is connected to accuse temperature water tank's output, second cooling water pump's output is connected the input of intercooler, fourth temperature sensor with control system's signal input part connects, control system's signal output part respectively with accuse temperature water tank and second cooling water pump connect.
Further, the first pressure sensor, the first temperature sensor and the humidity sensor are sequentially arranged on the first pipeline according to the flowing direction; and the second temperature sensor and the second pressure sensor are sequentially arranged on the second pipeline according to the flow direction.
Furthermore, a flowmeter is further arranged on a first pipeline at the downstream of the temperature control heat exchange assembly, and a manual valve is arranged on a first pipeline between the proportional valve and the hydrogen source.
Further, the throttle valve is an electric throttle valve, a signal output end of the control system is connected with the throttle valve, and the throttle valve is located at the downstream of the second three-way valve.
A test method of a hydrogen circulating pump test system for a fuel cell engine comprises the following steps:
s1, connecting the first pipeline with a hydrogen source, feeding a gas medium into the first pipeline, monitoring the gas pressure at the front end of the inlet of the circulating pump by the first pressure sensor and feeding back the gas pressure to the control system, controlling the opening degree of the proportional valve by the control system, feeding the required amount of the gas medium, and closing the proportional valve after the required pressure for the test is reached;
s2, enabling the gas medium in the first pipeline to run through the circulating pump and enter the second pipeline, enabling the gas medium to circulate in the first pipeline and the second pipeline, monitoring the gas pressure at the rear end of the outlet of the circulating pump by the second pressure sensor, and adjusting the opening degree of the throttle valve to achieve the outlet pressure of the circulating pump required by the test;
the first temperature sensor and the second temperature sensor respectively monitor the gas temperature at the front end of the inlet and the rear end of the outlet of the circulating pump and feed the gas temperature back to the control system, and the control system controls the temperature control heat exchange assembly to control the gas temperature to be at the required temperature;
the temperature of the gas media in the first pipeline and the second pipeline rises to expand, the gas pressure exceeds a limit value, the control system controls the pressure release valve to automatically exhaust gas to achieve pressure balance, otherwise, the temperature of the gas media in the first pipeline and the second pipeline decreases to contract, the gas pressure is lower than a required pressure, and the control system controls the proportional valve to open to introduce the gas media to achieve a test required pressure environment.
Further, the air conditioner is provided with a fan,
before step S1, connecting the first pipeline to the liquid medium source, introducing an appropriate amount of liquid medium into the first pipeline to ensure that the first pipeline, the second pipeline and the third pipeline are airtight, and then discharging the liquid medium in the first pipeline, the second pipeline and the third pipeline;
in step S1, when the first pressure sensor monitors that the gas pressure at the front end of the inlet of the circulation pump is lower than the required pressure and is too high, the control system controls the opening of the proportional valve to increase, and a gas medium is introduced at a large flow rate, otherwise, when the first pressure sensor monitors that the gas pressure at the front end of the inlet of the circulation pump is lower than the required pressure, the control system controls the opening of the proportional valve to decrease, and the gas flow rate introduced into the first pipeline decreases;
in step S2, the control system (31) controls the temperature-controlled heat exchange assembly to control the temperature of the gas at a desired temperature, specifically, the fourth temperature sensor of the temperature-controlled heat exchange assembly monitors the temperature of the water in the temperature-controlled water tank and feeds the temperature back to the control system, the control system controls the temperature-controlled water tank to control the temperature of the water in the temperature-controlled water tank at the desired temperature, and the control system controls the rotation speed of the second cooling water pump of the temperature-controlled heat exchange assembly to adjust the flow of the water flowing through the intercooler, thereby controlling the temperature of the gas at the desired temperature;
the gas pressure is lower than the required pressure, the control system (31) controls the proportional valve (4) to be opened to introduce a gas medium to achieve a test required pressure environment, specifically, the first pressure sensor monitors that the gas pressure is lower than a required pressure value and feeds the gas pressure back to the control system, the control system controls the proportional valve to be opened and controls the opening of the proportional valve, the required amount of the gas medium is introduced, and the proportional valve is closed after the test required pressure environment is achieved;
step S2 further includes that the humidity sensor monitors the humidity of the gas in the first pipeline, the gas is discharged in a gas discharging manner through the pressure release valve when the humidity of the gas is too high, and the first pipeline is connected to the liquid medium source when the humidity of the gas is too low, and a proper amount of liquid medium is added.
Compared with the prior art, the invention has the beneficial effects that:
in the testing process of the hydrogen circulating pump testing system for the fuel cell engine, the first pressure sensor monitors the gas pressure at the front end of the inlet of the circulating pump and feeds the gas pressure back to the control system, the circulating pump controller controls the opening of the proportional valve and feeds in required amount of gas medium to achieve the pressure required by the test, the second pressure sensor monitors the gas pressure at the rear end of the outlet of the circulating pump and achieves the outlet pressure of the circulating pump required by the test by adjusting the opening of the throttle valve, the first temperature sensor and the second temperature sensor respectively monitor the gas temperatures at the front end and the rear end of the inlet of the circulating pump and feed the gas temperatures back to the control system, the control system controls the temperature-control heat exchange assembly to control the gas temperature to be the required temperature, the gas medium in the first pipeline and the second pipeline expands due to the temperature rise, and the automatic exhaust of the pressure relief valve achieves pressure balance when the gas pressure exceeds a limit value, on the contrary, the gas media in the first pipeline and the second pipeline shrink due to temperature reduction, when the gas pressure is lower than the required pressure, the proportional valve is opened to introduce the gas media, the required pressure environment for the test is reached, the humidity sensor monitors the gas humidity in the first pipeline, when the gas humidity is too high, the gas is discharged in an exhaust mode through the pressure release valve, when the gas humidity is too low, the first pipeline is connected with a liquid medium source, and a proper amount of liquid media is added, so that the test system can enable the hydrogen circulating pump for the fuel cell engine to completely simulate the environment of the running state of the fuel cell engine, under the condition of completely simulating the temperature, the pressure and the humidity environment, whether the hydrogen circulating pump for the fuel cell engine can meet the use condition is evaluated, and effective data is provided for further development of the circulating pump;
in the invention, a circulating pump controller is connected with a heat exchange assembly, the heat exchange assembly comprises a water replenishing tank, the output end of the water replenishing tank is connected with a first cooling water pump, the output end of the first cooling water pump is connected with a cooling water inlet of the circulating pump controller, a cooling water outlet of the circulating pump controller is connected with the input end of the water replenishing tank, a cooling pipeline between the cooling water outlet of the circulating pump controller and the water replenishing tank is provided with a radiator, the radiator is provided with a radiator fan, a third temperature sensor is arranged on the cooling pipeline between the first cooling water pump and the cooling water inlet of the circulating pump controller and is connected with the signal input end of a control system, the signal output end of the control system is connected with the radiator fan, so that water in the water replenishing tank is driven by the first cooling water pump, enters the cooling water inlet of the circulating pump controller and flows out from the cooling water outlet of the circulating pump controller, the third temperature sensor monitors the temperature of water entering a cooling water inlet of the circulating pump controller and feeds the temperature back to the control system, and the control system controls the rotating speed of the cooling fan so as to exchange heat between the heat of the circulating pump controller and the outside air;
according to the invention, the temperature control heat exchange assembly comprises an intercooler, the intercooler is arranged on a first pipeline, the output end of the intercooler is connected with a temperature control water tank, a fourth temperature sensor is arranged in the temperature control water tank, the output end of the temperature control water tank is connected with a second cooling water pump, the output end of the second cooling water pump is connected with the input end of the intercooler, the fourth temperature sensor is connected with the signal input end of a control system, the signal output end of the control system is respectively connected with the temperature control water tank and the second cooling water pump, so that the fourth temperature sensor monitors the water temperature in the temperature control water tank and feeds back the water temperature to the control system, the control system controls the temperature control water tank to control the water temperature in the temperature control water tank to be at a required temperature, and controls the rotation speed of the second cooling water pump of the temperature control heat exchange assembly to adjust the water flow passing through the intercooler, thereby controlling the gas temperature to be at the required temperature;
according to the invention, the throttle valve is an electric throttle valve, the signal output end of the control system is connected with the throttle valve, the second pressure sensor monitors the gas pressure at the rear end of the outlet of the circulating pump and feeds the gas pressure back to the control system, and the control system controls the opening of the throttle valve, so that the pressure environment of the outlet of the circulating pump required by a test can be achieved;
compared with the Chinese patent CN112392711A, the invention utilizes an intercooler, a temperature control water tank and a second cooling water pump to form an independent temperature control system so as to control the temperature in the test system; the invention has the air inlet pressure stabilizing control system and the air exhaust pressure stabilizing system, can completely simulate the pressure environment condition of the running state of the fuel cell engine, has the heat radiation temperature control system of the independent circulating pump controller, can perform heat radiation and cooling on the circulating pump controller, further can prolong the service life of the circulating pump controller, and has the relative humidity monitoring system, can completely simulate the humidity condition of the running state of the fuel cell engine, thereby more accurately evaluating whether the hydrogen circulating pump for the fuel cell engine can meet the use condition; compared with the Chinese patent CN110578679A, the gas source used by the invention is a hydrogen source, the hydrogen source is attached to the application scene of a hydrogen circulating pump, the pressure pulse adjustment can be realized, the pressure adjustment slope is high, the precision is high, the high-precision control can realize the rapid alternating working condition of the fuel cell engine, the pressure closed loop adjustment is realized by the electric throttle valve, the pressure release valve and the matching of the internal gas flow circulation mode, the resources are saved, the application scene of the fuel cell engine is realized, the application range is wider, and the adjustment of the mixing ratio of new hydrogen and circulating hydrogen can be realized by the first three-way valve.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The reference numbers in the figures illustrate: 1. a circulating pump, 2, a first pipeline, 3, a hydrogen source, 4, a proportional valve, 5, a first three-way valve, 6, a manual valve, 7, a first pressure sensor, 8, a first temperature sensor, 9, a humidity sensor, 10, a second pipeline, 11, a second temperature sensor, 12, a second pressure sensor, 13, a second three-way valve, 14, a throttle valve, 15, a third pipeline, 16, a pressure release valve, 17, a circulating pump controller, 18, a circulating pump motor, 19, a water replenishing water tank, 20, a first cooling water pump, 21, a radiator, 22, a radiating fan, 23, a cooling pipeline, 24, a third temperature sensor, 25, an intercooler, 26, a temperature control water tank, 27, a fourth temperature sensor, 28, a second cooling water pump, 29, a flow meter, 30, a programmable power supply, 31 and a control system.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified. As shown in figure 1, a hydrogen circulating pump test system for a fuel cell engine comprises a circulating pump 1, an inlet of the circulating pump 1 is connected with a hydrogen source 3 or a liquid medium source through a first pipeline 2, a proportional valve 4, a first three-way valve 5 and a temperature control heat exchange assembly are sequentially arranged on the first pipeline 2 according to the medium flowing direction, a manual valve 6 is arranged on the first pipeline 2 between the proportional valve 4 and the hydrogen source 3, a first pressure sensor 7, a first temperature sensor 8 and a humidity sensor 9 are sequentially arranged on the first pipeline 2 at the downstream of the temperature control heat exchange assembly according to the medium flowing direction, an outlet of the circulating pump 1 is connected with the first three-way valve 5 through a second pipeline 10, a second temperature sensor 11 is sequentially arranged on the second pipeline 10 according to the medium flowing direction, the second pressure sensor 12, the second three-way valve 13 and the throttle valve 14, wherein the second three-way valve 13 is connected with the pressure release valve 16 through a third pipeline 15; the hydrogen circulating pump 1 testing system further comprises a control system, the control system 31 comprises a circulating pump controller 17, the circulating pump controller 17 is connected with a programmable power supply 30, the first pressure sensor 7, the first temperature sensor 8, the humidity sensor 9, the second temperature sensor 11, the second pressure sensor 12 and the circulating pump motor 18 are all connected with a signal input end of the control system 31, and a signal output end of the control system 31 is respectively connected with the proportional valve 4, the temperature control heat exchange assembly and the pressure release valve 16; the throttle valve 14 is an electric throttle valve 14, and the signal output of the control system 31 is connected to the throttle valve 14, and the throttle valve 14 is located downstream of the second three-way valve 13.
The circulating pump controller 17 is connected with a heat exchange assembly, the heat exchange assembly comprises a water replenishing water tank 19, the output end of the water replenishing water tank 19 is connected with a first cooling water pump 20, the output end of the first cooling water pump 20 is connected with a cooling water inlet of the circulating pump controller 17, a cooling water outlet of the circulating pump controller 17 is connected with the input end of the water replenishing water tank 19, a cooling pipeline 23 between the cooling water outlet of the circulating pump controller 17 and the water replenishing water tank 19 is provided with a radiator 21, and the radiator 21 is provided with a cooling fan 22; a third temperature sensor 24 is arranged on a cooling pipeline 23 between the first cooling water pump 20 and the cooling water inlet of the circulating pump controller 17, the third temperature sensor 24 is connected with a signal input end of a control system 31, and a signal output end of the control system 31 is connected with the cooling fan 22. Therefore, water in the water replenishing water tank 19 is driven by the first cooling water pump 20, enters the cooling water inlet of the circulating pump controller 17, flows out of the cooling water outlet of the circulating pump controller 17, passes through the radiator 21 and returns to the water replenishing water tank 19, the third temperature sensor 24 monitors the temperature of the water entering the cooling water inlet of the circulating pump controller 17 and feeds the temperature back to the control system 31, and the control system 31 controls the rotating speed of the cooling fan 22, so that heat of the circulating pump controller 17 can be exchanged with the outside air.
Wherein, accuse temperature heat transfer assembly includes intercooler 25, intercooler 25 sets up on first pipeline 2, accuse temperature water tank 26 is connected to intercooler 25's output, be equipped with fourth temperature sensor 27 in the accuse temperature water tank 26, second cooling water pump 28 is connected to accuse temperature water tank 26's output, intercooler 25's input is connected to second cooling water pump 28's output, fourth temperature sensor 27 is connected with control system 31's signal input part, control system 31's signal output part is connected with accuse temperature water tank 26 and second cooling water pump 28 respectively. Therefore, the fourth temperature sensor 27 monitors the water temperature in the temperature control water tank 26 and feeds the water temperature back to the control system 31, the control system 31 controls the temperature control water tank 26 to control the water temperature in the temperature control water tank 26 to be at the required temperature, the control system 31 controls the rotating speed of the second cooling water pump 28 of the temperature control heat exchange assembly to adjust the water flow passing through the intercooler 25, and the gas temperature can be controlled to be at the required temperature.
Wherein, still be equipped with flowmeter 29 on the first pipeline 2 of accuse temperature heat exchange assemblies downstream department, through flowmeter 29 real-time supervision record first pipeline 2 in the testing process gas flow.
A test method of a hydrogen circulating pump 1 test system for a fuel cell engine comprises the following steps:
s1, connecting the first pipeline 2 with a liquid medium source, introducing a proper amount of liquid medium into the first pipeline 2 to ensure that the first pipeline 2, the second pipeline 10 and the third pipeline 15 are airtight, and then discharging the liquid medium in the first pipeline 2, the second pipeline 10 and the third pipeline 15;
s2, connecting the first pipeline 2 with the hydrogen source 3, opening the manual valve 6, allowing the gas medium to enter the first pipeline 2, monitoring the gas pressure at the front end of the inlet of the circulating pump 1 by the first pressure sensor 7 and feeding the gas pressure back to the control system 31, controlling the opening of the proportional valve 4 by the control system 31, introducing the required gas medium, closing the proportional valve 4 after the required pressure is reached, specifically, when the first pressure sensor 7 monitors that the gas pressure at the front end of the inlet of the circulating pump 1 is lower than the required pressure (the required pressure specifically refers to the required pressure at the front end of the inlet of the circulating pump in actual operation), the control system 31 controls the opening of the proportional valve 4 to increase, introducing the gas medium with large flow, otherwise, when the first pressure sensor 7 monitors that the gas pressure at the front end of the inlet of the circulating pump 1 is lower than the required pressure, the control system 31 controls the opening of the proportional valve 4 to decrease, and the gas flow introduced into the first pipeline 2 to decrease, the actual pressure and the required pressure cannot be balanced immediately due to the fact that the gas medium is easy to compress, and when the actual pressure value is higher than the required pressure, pressure can be released through a pressure release valve 16 at the rear end to achieve pressure balance;
s3, the gas medium in the first pipeline 2 runs through the circulating pump 1 and enters the second pipeline 10, the gas medium is internally circulated between the first pipeline 2 and the second pipeline 10, the second pressure sensor 12 monitors the gas pressure at the rear end of the outlet of the circulating pump 1 and feeds the gas pressure back to the control system 31, after the circulating pump 1 reaches the required rotating speed, the control system 31 controls the opening of the throttle valve 14, and further the pressure environment at the outlet of the circulating pump 1 required by the test is reached (the pressure environment at the outlet of the circulating pump required by the test specifically refers to the pressure environment at the inlet of the fuel cell reactor), meanwhile, the pump head of the circulating pump 1 applies work to the gas when compressing the gas medium, and the heat generated by the work vaporizes part of the liquid medium in the pipelines;
the first temperature sensor 8 and the second temperature sensor 11 respectively monitor the gas temperature at the front end of the inlet and the rear end of the outlet of the circulating pump 1 and feed back to the control system 31, the control system 31 controls the temperature control heat exchange assembly, specifically, the fourth temperature sensor 27 of the temperature control heat exchange assembly monitors the water temperature in the temperature control water tank 26 and feeds back to the control system 31, the control system 31 controls the temperature control water tank 26 to control the water temperature in the temperature control water tank 26 to be at the required temperature, and the control system 31 controls the rotation speed of the second cooling water pump 28 of the temperature-controlled heat exchange assembly to adjust the water flow passing through the intercooler 25, the gas in the first pipeline 2 exchanges heat with the water in the temperature-controlled water tank 26 through the intercooler 25, so as to control the temperature of the gas to be at the required temperature, the required temperature is respectively a high-temperature environment under the rated working condition of the fuel cell engine and a low-temperature environment under the northern idling working condition in winter;
when high-temperature environment conditions under rated working conditions of a fuel cell engine are simulated, gas media in the first pipeline 2 and the second pipeline 10 expand due to temperature rise, the gas pressure is increased, when the gas pressure exceeds a limit value, the pressure relief valve 16 automatically exhausts gas to achieve pressure balance, otherwise, when low-temperature environment conditions under the northern idling working conditions in winter are simulated, the gas media in the first pipeline 2 and the second pipeline 10 contract due to temperature reduction, the gas pressure is reduced, the gas pressure monitored by the first pressure sensor 7 is lower than a required pressure value and is fed back to the control system 31, the control system 31 controls the proportional valve 4 to be opened and controls the opening degree of the proportional valve 4, required gas media are introduced, and the proportional valve 4 is closed after the required pressure environment is tested;
humidity transducer 9 monitors the gas humidity in first pipeline 2, discharges through 16 exhaust methods of relief valve when gas humidity is too high, and gas humidity is low when being low connects first pipeline 2 with the liquid medium source, adds the right amount of liquid medium.
The circulation pump 1 of the present invention is in a static state, by default closing all valves.
The invention is suitable for the circulating pump system for the fuel cell to simulate the scene in the hydrogen gas path pipeline in the running process of the hydrogen fuel cell engine; the operating medium environment simulates the temperature, humidity, pressure and flow in the working environment required by the circulating pump 1.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A hydrogen circulating pump test system for a fuel cell engine is characterized in that: including circulating pump (1), circulating pump (1) entry is through first pipeline (2) connection hydrogen source (3), be equipped with proportional valve (4), first three-way valve (5) and accuse temperature heat exchange assembly in proper order according to the flow direction on first pipeline (2), be equipped with first pressure sensor (7) and first temperature sensor (8) on first pipeline (2) of accuse temperature heat exchange assembly low reaches department, circulating pump (1) export is connected through second pipeline (10) with first three-way valve (5), second pipeline (10) on be equipped with second temperature sensor (11), second pressure sensor (12), second three-way valve (13) and choke valve (14).
2. The system for testing a hydrogen circulation pump for a fuel cell engine according to claim 1, wherein: the other end of the first pipeline (2) can be also connected with a liquid medium source; a humidity sensor (9) is also arranged on the first pipeline (2) at the downstream of the temperature control heat exchange assembly; the second temperature sensor (11) and the second pressure sensor (12) are positioned at the upstream of the second three-way valve (13) and the throttle valve (14), and the second three-way valve (13) is connected with a pressure relief valve (16) through a third pipeline (15); the hydrogen circulating pump test system further comprises a control system (31), the control system (31) comprises a circulating pump controller (17), the first pressure sensor (7), the first temperature sensor (8), the humidity sensor (9), the second temperature sensor (11), the second pressure sensor (12) and the circulating pump motor (18) are all connected with a signal input end of the control system (31), and a signal output end of the control system (31) is respectively connected with the proportional valve (4), the temperature control heat exchange assembly and the pressure release valve (16).
3. The system for testing a hydrogen circulation pump for a fuel cell engine according to claim 2, wherein: heat exchange assembly is connected in circulating pump controller (17), heat exchange assembly includes moisturizing water tank (19), first cooling water pump (20) is connected to moisturizing water tank (19) output, first cooling water pump (20) output is connected the cooling water entry of circulating pump controller (17), the cooling water exit linkage of circulating pump controller (17) moisturizing water tank (19) input, the cooling water export of circulating pump controller (17) with be equipped with radiator (21) on cooling line (23) between moisturizing water tank (19), be equipped with radiator fan (22) on radiator (21).
4. The system for testing a hydrogen circulation pump for a fuel cell engine according to claim 3, wherein: and a third temperature sensor (24) is arranged on a cooling pipeline (23) between the first cooling water pump (20) and a cooling water inlet of the circulating pump controller (17), the third temperature sensor (24) is connected with a signal input end of the control system (31), and a signal output end of the control system (31) is connected with the cooling fan (22).
5. The system for testing a hydrogen circulation pump for a fuel cell engine according to claim 2, wherein: accuse temperature heat transfer assembly includes intercooler (25), intercooler (25) sets up on first pipeline (2), accuse temperature water tank (26) is connected to the output of intercooler (25), be equipped with fourth temperature sensor (27) in accuse temperature water tank (26), second cooling water pump (28) is connected to the output of accuse temperature water tank (26), the output of second cooling water pump (28) is connected the input of intercooler (25), fourth temperature sensor (27) with the signal input part of control system (31) connects, the signal output part of control system (31) respectively with accuse temperature water tank (26) and second cooling water pump (28) are connected.
6. The system for testing a hydrogen circulation pump for a fuel cell engine according to claim 2, wherein: the first pressure sensor (7), the first temperature sensor (8) and the humidity sensor (9) are sequentially arranged on the first pipeline (2) according to the flowing direction; the second temperature sensor (11) and the second pressure sensor (12) are sequentially arranged on the second pipeline (10) according to the flowing direction.
7. The system for testing a hydrogen circulation pump for a fuel cell engine according to claim 2, wherein: still be equipped with flowmeter (29) on controlling the first pipeline (2) of accuse temperature heat exchange assemblies downstream department, proportional valve (4) with be equipped with manual valve (6) on the first pipeline (2) between hydrogen source (3).
8. The system for testing a hydrogen circulation pump for a fuel cell engine according to claim 2, wherein: the throttle valve (14) is an electric throttle valve (14), a signal output end of the control system (31) is connected with the throttle valve (14), and the throttle valve (14) is located at the downstream of the second three-way valve (13).
9. A method for testing a hydrogen circulation pump test system for a fuel cell engine according to any one of claims 2 to 8, characterized by comprising the steps of:
s1, connecting the first pipeline (2) with the hydrogen source (3), enabling a gas medium to enter the first pipeline (2), monitoring the gas pressure at the front end of an inlet of the circulating pump (1) by the first pressure sensor (7) and feeding back the gas pressure to the control system (31), controlling the opening degree of the proportional valve (4) by the control system (31), introducing the required gas medium, and closing the proportional valve (4) after the required pressure for the test is reached;
s2, the gas medium in the first pipeline (2) runs through the circulating pump (1) and enters the second pipeline (10), the gas medium is internally circulated in the first pipeline (2) and the second pipeline (10), the second pressure sensor (12) monitors the gas pressure at the rear end of the outlet of the circulating pump (1), and the outlet pressure of the circulating pump (1) required by the test is achieved by adjusting the opening degree of the throttle valve (14);
the first temperature sensor (8) and the second temperature sensor (11) respectively monitor the gas temperature at the front end of the inlet and the rear end of the outlet of the circulating pump (1) and feed back the gas temperature to the control system (31), and the control system (31) controls the temperature-control heat exchange assembly to control the gas temperature to be at the required temperature;
the temperature of the gas medium in the first pipeline (2) and the second pipeline (10) rises to expand, the gas pressure exceeds a limit value, the control system (31) controls the pressure release valve (16) to automatically exhaust gas to achieve pressure balance, otherwise, the temperature of the gas medium in the first pipeline (2) and the second pipeline (10) is reduced to contract, the gas pressure is lower than the required pressure, and the control system (31) controls the proportional valve (4) to be opened to introduce the gas medium to achieve the test required pressure environment.
10. The method for testing a hydrogen circulation pump test system for a fuel cell engine according to claim 9, characterized in that:
before the step S1, connecting the first pipeline (2) with the liquid medium source, introducing a proper amount of liquid medium into the first pipeline (2) to ensure that the first pipeline (2), the second pipeline (10) and the third pipeline (15) are airtight, and then discharging the liquid medium in the first pipeline (2), the second pipeline (10) and the third pipeline (15);
in the step S1, when the first pressure sensor (7) monitors that the gas pressure at the front end of the inlet of the circulating pump (1) is too high below a required pressure, the control system (31) controls the opening of the proportional valve (4) to increase, and a gas medium is introduced at a large flow rate, otherwise, when the first pressure sensor (7) monitors that the gas pressure at the front end of the inlet of the circulating pump (1) is lower than the required pressure, the control system (31) controls the opening of the proportional valve (4) to decrease, and the gas flow rate introduced into the first pipeline (2) decreases;
in step S2, the control system (31) controls the temperature-controlled heat exchange assembly to control the temperature of the gas at a desired temperature, specifically, the fourth temperature sensor (27) of the temperature-controlled heat exchange assembly monitors the temperature of the water in the temperature-controlled water tank (26) and feeds the temperature back to the control system (31), the control system (31) controls the temperature-controlled water tank (26) to control the temperature of the water in the temperature-controlled water tank (26) at the desired temperature, and the control system (31) controls the rotation speed of the second cooling water pump (28) of the temperature-controlled heat exchange assembly to adjust the flow of the water flowing through the intercooler (25) to control the temperature of the gas at the desired temperature;
the gas pressure is lower than the required pressure, the control system (31) controls to open the proportional valve (4) and introduce a gas medium to achieve a test required pressure environment, specifically, the first pressure sensor (7) monitors that the gas pressure is lower than the required pressure value and feeds back the gas pressure to the control system (31), the control system (31) controls to open the proportional valve (4) and controls the opening degree of the proportional valve (4), the required amount of the gas medium is introduced, and the proportional valve (4) is closed after the test required pressure environment is achieved;
step S2 further comprises that the humidity sensor (9) monitors the humidity of the gas in the first pipeline (2), the gas is exhausted in an exhaust mode through the pressure release valve (16) when the humidity of the gas is too high, and the first pipeline (2) is connected with the liquid medium source when the humidity of the gas is too low, and a proper amount of liquid medium is added.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116335931A (en) * | 2023-04-28 | 2023-06-27 | 杰锋汽车动力系统股份有限公司 | Fuel cell circulating pump endurance test device and test method thereof |
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| CN109713334A (en) * | 2019-02-01 | 2019-05-03 | 清华大学 | Fuel cell pile testboard and its application method |
| CN214170790U (en) * | 2020-11-30 | 2021-09-10 | 深圳市氢蓝时代动力科技有限公司 | Testing device of hydrogen circulating pump |
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