CN111238801B - Thermal management control valve endurance test device - Google Patents
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- CN111238801B CN111238801B CN202010209289.3A CN202010209289A CN111238801B CN 111238801 B CN111238801 B CN 111238801B CN 202010209289 A CN202010209289 A CN 202010209289A CN 111238801 B CN111238801 B CN 111238801B
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Abstract
The invention discloses a durability test device for a thermal management control valve, which belongs to the technical field of automobile part test equipment and comprises a test water tank, a high-low temperature environment test cabin, a low-temperature water tank group, a high-temperature water tank group and a control system, wherein the low-temperature water tank group is communicated with the test water tank through a first water supply pipeline, the high-temperature water tank group is communicated with the test water tank through a second water supply pipeline, the first water supply pipeline is provided with a low-temperature water supply pump, a low-temperature water injection control valve and a low-temperature mass flowmeter, and the second water supply pipeline is provided with a high-temperature water supply pump, a high-temperature water injection control valve and a high-temperature mass flowmeter; the test water tank is communicated with a test pipeline, a plurality of thermal management control valves positioned in the high-low temperature environment test cabin are communicated on the test pipeline in parallel, and a water supply control valve, a cross-river electromagnetic flowmeter and a water supply speed regulating water pump are arranged on the test pipeline; the control system includes a computer. The invention can simulate the actual application condition of the parts and can truly reflect the durability of the heat management control valve.
Description
Technical Field
The invention relates to the technical field of automobile part testing equipment, in particular to a thermal management control valve endurance test device.
Background
One of the key technologies developed by the thermal management system of the automobile engine is the matching technology of the thermal management system and the engine operation and the selection problem of the system optimization control strategy. The efficiency of the heat management system depends on a system optimization control strategy to a great extent, and control objects comprise the rotating speed of a water pump, the opening of a valve of an electric control thermostat, the rotating speed of a cooling fan and the like. The intelligent electric control heat management system control strategy can be formulated according to the actual working and test conditions of the automobile engine and the system optimization principle, so that the engine can work in the optimal temperature range under different working conditions. The engine heat management system is a visual metaphor, namely, a variable frequency air conditioner is arranged on an engine, so that the engine is kept at the optimal cooling water temperature of-90 ℃ when in work. The stability of the automotive thermal management control valve is critical to the automotive engine, and therefore, good durability tests are required to be performed on the automotive thermal management control valve during the manufacturing process. The existing endurance test of the new energy automobile parts can only realize the endurance test assessment of a certain constant medium temperature, and cannot simulate the actual application working conditions of the parts, so that the endurance performance assessment result cannot truly reflect the endurance of the parts.
Patent document with publication number CN 104792642 a discloses a temperature valve endurance test device, including a high temperature pond, a low temperature pond and electrical control cabinet, be equipped with a thermocouple outside high temperature pond and the low temperature pond respectively, be equipped with revolving cylinder between high temperature pond and the low temperature pond, be equipped with the rocking arm on the revolving cylinder, the one end and the revolving cylinder of rocking arm are connected, and the other end is equipped with the dead lever that is used for fixed temperature valve, and the dead lever is located the one side that is close to high temperature pond and low temperature pond on the rocking arm, be equipped with the solenoid valve that is used for controlling its work on the revolving cylinder, be equipped with temperature controller in the electrical control cabinet to be connected with thermocouple, solenoid valve respectively through the wire. The invention adopts two critical temperature environments simulating the actions of the temperature valves, utilizes electric heating, and then carries out constant temperature control through the temperature controller to achieve the experimental requirements, so that the endurance test of the temperature valves is convenient and rapid. However, the invention can only realize the endurance test examination of a certain constant medium temperature, can not simulate the actual application working condition of parts, and has unreliable test results.
Patent document CN 102353529 a discloses a testing device for temperature intensity of a thermostatic control valve, belonging to the technical field of machinery. The automatic valve opening and closing device comprises a rack, wherein a cold water tank and a hot water tank are arranged on the rack, clamps for clamping valves are arranged on the upper portions of the cold water tank and the hot water tank, and a conveying mechanism capable of enabling the clamp to be alternately arranged in the cold water tank and the hot water tank is further arranged on the rack. The method solves the problems that the existing detection is completely determined by the experience of a detector and the detection process is complicated, time-consuming and labor-consuming. The testing device for the temperature intensity of the thermostatic control valve has the advantages of convenience in use and higher testing stability. But it fails to solve the problem of low test accuracy caused by the fact that the simulation parts are in practical application conditions.
Disclosure of Invention
In view of the above, the present invention provides a thermal management control valve durability test apparatus capable of simulating actual application conditions of components and parts and truly reflecting durability of a thermal management control valve, which is directed to the defects of the prior art.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a durability test device for a thermal management control valve comprises a test water tank, a high-low temperature environment test cabin, a low-temperature water tank group, a high-temperature water tank group and a control system, wherein the low-temperature water tank group is communicated with the test water tank through a first water supply pipeline, the high-temperature water tank group is communicated with the test water tank through a second water supply pipeline, a low-temperature water supply pump, a low-temperature water injection control valve and a low-temperature mass flowmeter are arranged on the first water supply pipeline, and a high-temperature water supply pump, a high-temperature water injection control valve and a high-temperature mass flowmeter are arranged on the second water supply pipeline; the test water tank is communicated with a test pipeline, a plurality of thermal management control valves positioned in the high-low temperature environment test cabin are communicated on the test pipeline in parallel, and a water supply control valve, a cross-river electromagnetic flowmeter and a water supply speed regulating water pump are arranged on the test pipeline; the control system comprises a computer, and a low-temperature water pump frequency converter, a high-temperature water pump frequency converter and a water supply pump frequency converter which are in signal connection with the computer.
Furthermore, the low-temperature water pump frequency converter is in signal connection with the low-temperature water supply pump, the high-temperature water pump frequency converter is in signal connection with the high-temperature water supply pump, and the water supply water pump frequency converter is in signal connection with the water supply speed regulation water pump.
Furthermore, the test water tank is provided with a temperature sensor, a differential pressure type liquid level sensor and a stirrer.
Further, the low temperature water tank group includes two low temperature water tanks, two the low temperature water tank lower part communicates a low temperature water injection pipeline respectively, two set up a low temperature water injection valve on the low temperature water injection pipeline respectively, two the low temperature water injection pipeline terminal all with the low temperature working shaft intercommunication.
Further, the high temperature water tank group includes two high temperature water tanks, two the high temperature water tank lower part communicates a high temperature water injection pipeline respectively, two set up a high temperature water injection valve on the high temperature water injection pipeline respectively, two the high temperature water injection pipeline terminal all with the high temperature working shaft intercommunication.
Furthermore, the lower parts of the two low-temperature water tanks are respectively communicated with a refrigeration circulating water pump through a first circulating pipeline, the refrigeration circulating water pump is communicated with the water outlet end of the water cooling machine, and the upper parts of the two low-temperature water tanks are respectively communicated with the water inlet end of the water cooling machine through a second circulating pipeline.
Furthermore, electric heaters are arranged in the two high-temperature water tanks.
Furthermore, the lower part of the test water tank is communicated with a T-shaped pipeline, two branch pipes of the T-shaped pipeline are respectively provided with a drain valve, the tail ends of the two branch pipes of the T-shaped pipeline are respectively communicated with a low-temperature water storage tank and a high-temperature water storage tank, the low-temperature water storage tank is communicated with the low-temperature water storage tank set through a low-temperature reflux pump, and the high-temperature water storage tank is communicated with the high-temperature water storage tank set through a high-temperature reflux pump.
The thermal management control valve is used as a simple control element on an automobile, and technicians in the industry generally adopt a certain constant medium temperature endurance test for examination based on the consideration of cost and processing efficiency during processing tests, which is very common in the industry, for example, a temperature valve endurance test device disclosed in the patent document with the publication number of CN 104792642A adopts two critical temperature environments for simulating the action of the temperature valve, utilizes electric heating, and then performs constant temperature control through a temperature controller to meet the experimental requirements, so that the endurance test of the temperature valve is convenient and quick; for example, a testing apparatus for testing the temperature intensity of a thermostatic control valve disclosed in patent publication No. CN 102353529 a, solves the problems that the conventional testing method is completely determined by the experience of the tester and the testing process is complicated, time-consuming and labor-consuming.
The test device of the two temperature control valves is designed based on the simplicity and convenience in operation, and aims to improve the working efficiency of the test, thereby improving the productivity, which is the most practical production requirement in the prior art, but although the test method adopting a certain constant medium temperature can meet certain quality inspection requirements, along with the industrial development, the quality standards of various workpieces are continuously improved, the existing detection mode cannot meet the requirements of processing precision and service life, and in order to ensure the stability of the heat management control valve during use, the endurance test needs to be carried out by simulating the working conditions of parts in practical application, namely, simulating the medium temperatures in cold start, low temperature, cold start, partial load, full load, partial load and full load states, and meanwhile, the problem of test efficiency also needs to be solved.
Compared with the prior art, the invention has the following beneficial effects:
the invention relates to a thermal management control valve endurance test device, which is characterized in that the temperature of media in a high-temperature water tank and a low-temperature water tank is controlled at 130 ℃ and-43 ℃ respectively by equipment, the test water tank is emptied, and the media in the high-temperature liquid storage tank and the low-temperature liquid storage tank are allocated to the test water tank through flow rate control according to the requirement of the change of the temperature of the media in the test process of the thermal management control valve by a high-low temperature water pump with controllable flow rate, a high-low temperature cross flow electromagnetic flowmeter, a mass flowmeter (used for controlling the temperature of the media in the test tank) and a frequency converter, so that the linear change of the temperature of the media in the test process is realized, the flow rate of the media is-40 ℃ to 25 ℃, and the heating rate is 10 ℃/min under the condition of 300L/min; the temperature rise rate is 16 ℃/min at 25-105 ℃; 105-125 ℃, and the heating rate is 10 ℃/min; the temperature is between 125 and minus 25 ℃, and the cooling rate is 8 ℃/min; the temperature is reduced from minus 25 ℃ to minus 40 ℃ at a rate of 5 ℃/min. The temperature is linearly controlled, the linear deviation is +/-2 ℃, the alternating endurance test assessment of the thermal management control valve in a plurality of medium temperature change sections and a plurality of medium constant temperature sections is realized, the medium temperature change is calculated and controlled by a microcomputer control program, and the system can correct the flow of the injected low-temperature or high-temperature test medium in real time according to the actual temperature increase and decrease speed in the control process. According to the durability test device for the thermal management control valve, the durability of the part can be truly reflected by the durability examination result through simulating the actual working state of the thermal management control valve in the engine.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a temperature profile of a durability test in a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a high-temperature and low-temperature test chamber in the third embodiment of the invention;
fig. 4 is a schematic structural view of a support frame in the third embodiment of the present invention.
Detailed Description
In order to better understand the present invention, the following examples are further provided to clearly illustrate the contents of the present invention, but the contents of the present invention are not limited to the following examples. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details.
Example one
As shown in fig. 1, a durability test device for a thermal management control valve comprises a test water tank 1, a high-low temperature environment test chamber 2, a low-temperature water tank group, a high-temperature water tank group and a control system, wherein the low-temperature water tank group is communicated with the test water tank 1 through a first water supply pipeline 3, the high-temperature water tank group is communicated with the test water tank 1 through a second water supply pipeline 4, a low-temperature water supply pump 5, a low-temperature water injection control valve 6 and a low-temperature mass flow meter 7 are arranged on the first water supply pipeline 3, and a high-temperature water supply pump 8, a high-temperature water injection control valve 9 and a high-temperature mass flow meter 10 are arranged on the second water supply pipeline 4; the test water tank 1 is communicated with a test pipeline 11, a plurality of thermal management control valves 12 positioned in the high and low temperature environment test cabin 2 are communicated on the test pipeline 11 in parallel, and a water supply control valve 13, a cross-river electromagnetic flowmeter 14 and a water supply speed regulating water pump 15 are arranged on the test pipeline 11; the control system comprises a computer 16, and a low-temperature water pump frequency converter 17, a high-temperature water pump frequency converter 18 and a water supply water pump frequency converter 19 which are in signal connection with the computer 16.
Specifically, the low-temperature water pump frequency converter 17 is in signal connection with the low-temperature water supply pump 5, the high-temperature water pump frequency converter 18 is in signal connection with the high-temperature water supply pump 8, and the water supply water pump frequency converter 19 is in signal connection with the water supply speed regulation water pump 15.
The test water tank 1 is provided with a temperature sensor 20, a differential pressure type liquid level sensor 21 and a stirrer 22.
The low temperature water tank group includes two low temperature water tanks 23, two the 23 lower parts of low temperature water tank communicate a low temperature water injection pipeline 24 respectively, two set up a low temperature water injection valve 25 on the low temperature water injection pipeline 24 respectively, two the 24 end of low temperature water injection pipeline all with low temperature feed pump 5 communicates.
The high temperature water tank group includes two high temperature water tanks 26, two the 26 lower parts of high temperature water tank communicate a high temperature water injection pipeline 27 respectively, two set up a high temperature water injection valve 28 on the high temperature water injection pipeline 27 respectively, two the 27 end of high temperature water injection pipeline all with high temperature feed pump 8 communicates.
The lower parts of the two low-temperature water tanks 23 are respectively communicated with a refrigeration cycle water pump 30 through a first circulating pipeline 29, the refrigeration cycle water pump 30 is communicated with the water outlet end of a water cooler 31, and the upper parts of the two low-temperature water tanks 23 are respectively communicated with the water inlet end of the water cooler 31 through a second circulating pipeline 32.
An electric heater 39 is arranged in each of the two high-temperature water tanks 26.
The lower part of the test water tank 1 is communicated with a T-shaped pipeline 33, two branch pipes of the T-shaped pipeline 33 are respectively provided with a drain valve 34, the tail ends of the two branch pipes of the T-shaped pipeline 33 are respectively communicated with a low-temperature water storage tank 35 and a high-temperature water storage tank 36, the low-temperature water storage tank 35 is communicated with the low-temperature water storage tank group through a low-temperature reflux pump 37, the high-temperature water storage tank 36 is communicated with the high-temperature water storage tank group through a high-temperature reflux pump 38, and a high-temperature water tank water injection valve 40 is arranged on a pipeline which is communicated with the high-temperature reflux pump 38 and the high-temperature water storage tank 26.
According to the endurance test device for the thermal management control valve, before the test is started, the device controls the temperature of media in the high-temperature water tank and the low-temperature water tank to be 130 ℃ and-43 ℃ (the process needs 3 hours to be finished) respectively, the test water tank is emptied, and the media in the high-temperature liquid storage tank and the low-temperature liquid storage tank are allocated to the test water tank through flow rate control according to the requirement of the change of the temperature of the media in the test process of the thermal management control valve through a high-low temperature water pump with controllable flow rate, a high-low temperature cross flow electromagnetic flow meter, a mass flow meter (used for controlling the temperature of the media in the test tank) and a frequency converter, so that the linear change of the temperature of the media in the test process is realized, and the linear deviation is +/-2 ℃.
Example two
As shown in fig. 2, in the durability test apparatus for the thermal management control valve according to the embodiment of the present invention, the durability test method specifically includes the following steps:
1. raising the temperature 1: the test tank target volume is V and measured with a level sensor. The starting temperature was T1 (low-temperature tank temperature-43 ℃, temperature of the heating medium supply was T2 (high-temperature tank temperature 130 ℃), the target temperature was T3(25 ℃), the total amount of cold water injected was V1, and the total amount of hot water injected was V2(V2= V-V1). Assume a test tank target test medium total of V =100 liters.
1.1 starting a low-temperature water pump, injecting a low-temperature test medium at 40 ℃ below zero into a test water tank at the highest rotating speed (in the state, temperature rising and falling speed control is not carried out), wherein the total injection amount is V1= V (1- (T3-T1) ÷ (T2-T1)) =100 (1- (25- (-40) ÷ (130- (-40))) =61.7 liters.
1.2 injecting V2= V-V1=38.3 liters of 130 ℃ high-temperature medium into the test water tank, wherein the temperature rising speed is 10 ℃/min, the temperature rising =25- (-40) =65 ℃, the required time is =65 ÷ 10=6.5 min, and the injection flow rate of the hot water medium is =38.3 ÷ 6.5= 5.89L/min. The high-temperature water pump is started and the rotating speed of the high-temperature water pump is controlled, so that the purpose of controlling the injection flow is achieved. And simultaneously, starting the stirrer in the test water tank to balance the temperature in the water tank. The temperature rise step was completed after 6.5 min. Entering the next step;
2. the temperature rise 2 is required to be 25-105 ℃, and the temperature rise rate is 16 ℃/min;
2.1, according to the formula V2= V × (T3-T1) ÷ (T2-T1)) =100 × (105-25) ÷ (130-25) =76.2, open test tank drain valve, discharge 80 liters of medium to the storage tank.
2.2, injecting 76.2 liters of 130 ℃ high-temperature medium into a test water tank, wherein the heating rate is 16 ℃/min, the temperature rise is =105-25=80 ℃, the required time is =80 ÷ 16= 5min, and the injection flow rate of the hot water medium is =76.2 ÷ 5= 15.2L/min. The high-temperature water pump is started and the rotating speed of the high-temperature water pump is controlled, so that the purpose of controlling the injection flow is achieved. And simultaneously, starting the stirrer in the test water tank to balance the temperature in the water tank. And finishing the temperature rise step after 5 min. Entering the next step;
3. the temperature rise 3 is required to be 105-125 ℃, the temperature rise rate is 10 ℃/min:
3.1, according to the formula V2= V × (T3-T1) ÷ (T2-T1)) =100 × (125-105) ÷ (130-25) =19.4, open the test tank drain valve, discharge 19.4 liters of medium to the storage tank.
3.2, injecting 19.4 liters of 130 ℃ high-temperature medium into the test water tank, wherein the temperature rising speed is 10 ℃/min, the temperature rising = 125-. The high-temperature water pump is started and the rotating speed of the high-temperature water pump is controlled, so that the purpose of controlling the injection flow is achieved. And simultaneously, starting the stirrer in the test water tank to balance the temperature in the water tank. The temperature rise step was completed after 2 min. Entering the next step;
3.3, starting a water injection pump of the high-temperature water tank after the temperature rise is finished, injecting a medium into the high-temperature water tank from the liquid storage tank, and automatically controlling the temperature of the medium in the high-temperature water tank to reach 130 ℃ for the next period of use.
4. And (4) cooling: the temperature is between 125 and-25 ℃, and the heating rate is 8 ℃/min;
4.1, according to the formula V2= V × (T3-T1) ÷ (T2-T1)) =100 × (-25-125) ÷ (-43-125) =89.2, open test tank drain valve, discharge 89.2 liters of medium to the storage tank.
4.2, injecting 89.2 liters of low-temperature medium at the temperature of 43 ℃ into the test water tank, wherein the heating rate is 8 ℃/min, the temperature rise is = 125-25 =150 ℃, the required time is =150 ÷ 8=18.75min, and the injection flow rate of the cold water medium is =89.2 ÷ 18.75= 4.75L/min. The low-temperature water pump is started and the rotating speed of the low-temperature water pump is controlled, so that the purpose of controlling the injection flow is achieved. And simultaneously, starting the stirrer in the test water tank to balance the temperature in the water tank. The temperature increase step was completed after 18.75 min. Entering the next step;
5. and 5, cooling: the temperature is between 25 ℃ below zero and 40 ℃ below zero, and the heating rate is 5 ℃/min;
5.1, according to the formula V2= V × (T3-T1) ÷ (T2-T1) =100 × (-40- -25) ÷ (-43- -25) =83.3, open the test tank drain valve, and discharge 83.3 liters of medium to the storage tank.
5.2, injecting 83.3 liters of low-temperature medium at the temperature of 43 ℃ into a test water tank, wherein the heating rate is 5 ℃/min, the temperature is increased by = -25 to-40 =15 ℃, the required time is =15 ÷ 5=3min, and the injection flow rate of the cold water medium is =83.3 ÷ 3= 27.7L/min. The low-temperature water pump is started and the rotating speed of the low-temperature water pump is controlled, so that the purpose of controlling the injection flow is achieved. And simultaneously, starting the stirrer in the test water tank to balance the temperature in the water tank. And finishing the temperature rise step after 3 min.
6. The above steps are calculated and controlled by a microcomputer control program, and the system can correct the flow of the injected low-temperature or high-temperature test medium in real time according to the actual temperature rise and fall speed in the control process.
7. And after each temperature increasing and decreasing step is completed, the water pump continuously operates to continuously provide a controllable flow medium for the thermal management control valve, operates for a specified time, and then enters the next temperature increasing and decreasing control process, and in constant operation, the system controls the temperature of the medium in the test water tank, if the temperature decreases, the high-temperature medium is injected according to the calculation mode, and otherwise, the low-temperature medium is injected. And in the process, the low-temperature water tank and the high-temperature water tank are supplemented with media, and the temperature PID control is carried out on the temperature of the media in a refrigerating or heating state.
EXAMPLE III
As shown in fig. 3 to 4, the thermal management control valve endurance test apparatus according to the embodiment of the present invention is different from the first embodiment in that: the high and low temperature test chamber comprises a chamber body 41, a chamber door is arranged on the outer side of the chamber body 41, a touch screen is arranged on the chamber door, the touch screen is communicated with a computer serial port, a cooling spraying mechanism 42 is arranged at the top in the chamber body 41, a heating mechanism 43 is arranged at the bottom in the chamber body 41, fans 44 are arranged on two sides in the chamber body 41, a through hole for the test pipeline 11 to enter is arranged on one side of the chamber body 41, and a support frame for supporting the test pipeline is arranged in the chamber body 41; the support frame includes base 45, spring clamping jaw 46 and screwed pipe 47, base 45 upper end sets up first screw rod 48, spring clamping jaw 46 lower part sets up second screw rod 49, screwed pipe 47 sets up the internal thread, second screw rod 49 with first screw rod 48 respectively with upper and lower end threaded connection on the screwed pipe 47, the screw thread opposite direction of the inside upper and lower extreme of screwed pipe 47, rotate from this during the screwed pipe, first screw rod and second screw rod stretch out from opposite direction the screwed pipe to carry out the stable support, the base is the three-legged support, spring clamping jaw includes bottom plate and two semi-annular clamping jaw, set up "T" type groove on the bottom plate, two semi-annular clamping jaw lower extreme sets up "T" type inslot, two semi-annular clamping jaw lower extreme is through many spring coupling.
According to the endurance test device for the thermal management control valve, the high-low temperature test chamber adjusts high and low temperatures according to the temperature change of the endurance test so as to maintain the temperature change in the test pipeline to be small and ensure the accuracy degree of the test result.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The utility model provides a thermal management control valve endurance test device which characterized in that: the system comprises a test water tank, a high-low temperature environment test cabin, a low-temperature water tank group, a high-temperature water tank group and a control system, wherein the low-temperature water tank group is communicated with the test water tank through a first water supply pipeline, the high-temperature water tank group is communicated with the test water tank through a second water supply pipeline, a low-temperature water supply pump, a low-temperature water injection control valve and a low-temperature mass flowmeter are arranged on the first water supply pipeline, and a high-temperature water supply pump, a high-temperature water injection control valve and a high-temperature mass flowmeter are arranged on the second water supply pipeline; the test water tank is communicated with a test pipeline, a plurality of thermal management control valves positioned in the high-low temperature environment test cabin are communicated on the test pipeline in parallel, and a water supply control valve, a cross-river electromagnetic flowmeter and a water supply speed regulating water pump are arranged on the test pipeline; the control system comprises a computer, and a low-temperature water pump frequency converter, a high-temperature water pump frequency converter and a water supply water pump frequency converter which are in signal connection with the computer;
the medium temperature in the high-temperature water tank and the medium temperature in the low-temperature water tank are respectively controlled at 130 ℃ and-43 ℃, the test water tank is emptied, the medium in the high-temperature liquid storage tank and the medium in the low-temperature liquid storage tank are controlled and allocated to the test water tank through a high-low temperature water pump with controllable flow, a high-low temperature cross flow electromagnetic flowmeter, a mass flowmeter and a frequency converter according to the medium temperature change requirement in the test process of the thermal management control valve, the medium temperature linear change in the test process is realized, the medium flow is at-40 ℃ to 25 ℃ under the condition of 300L/min, and the heating rate is 10 ℃/min; the temperature rise rate is 16 ℃/min at 25-105 ℃; 105-125 ℃, and the heating rate is 10 ℃/min; the temperature is between 125 and minus 25 ℃, and the cooling rate is 8 ℃/min; the temperature is reduced from minus 25 ℃ to minus 40 ℃ at a rate of 5 ℃/min.
2. The thermal management control valve endurance testing apparatus of claim 1, in which: the low-temperature water pump frequency converter is in signal connection with the low-temperature water supply pump, the high-temperature water pump frequency converter is in signal connection with the high-temperature water supply pump, and the water supply water pump frequency converter is in signal connection with the water supply speed regulation water pump.
3. The thermal management control valve endurance testing apparatus of claim 1, in which: the test water tank is provided with a temperature sensor, a differential pressure type liquid level sensor and a stirrer.
4. The thermal management control valve endurance testing apparatus of claim 1, in which: the low temperature water tank group includes two low temperature water tanks, two the low temperature water tank lower part communicates a low temperature water injection pipeline respectively, two set up a low temperature water injection valve on the low temperature water injection pipeline respectively, two the low temperature water injection pipeline terminal all with low temperature working shaft intercommunication.
5. The thermal management control valve endurance testing apparatus of claim 1, in which: the high temperature water tank group includes two high temperature water tanks, two the high temperature water tank lower part communicates a high temperature water injection pipeline respectively, two set up a high temperature water injection valve on the high temperature water injection pipeline respectively, two the high temperature water injection pipeline terminal all with the high temperature working shaft intercommunication.
6. The thermal management control valve endurance testing apparatus of claim 4, in which: the lower parts of the two low-temperature water tanks are respectively communicated with a refrigeration circulating water pump through a first circulating pipeline, the refrigeration circulating water pump is communicated with the water outlet end of the water cooling machine, and the upper parts of the two low-temperature water tanks are respectively communicated with the water inlet end of the water cooling machine through a second circulating pipeline.
7. The thermal management control valve endurance testing apparatus of claim 5, in which: and electric heaters are arranged in the two high-temperature water tanks.
8. The thermal management control valve endurance testing apparatus of claim 1, in which: the test water tank lower part intercommunication "T" type pipeline, all set up a drain valve on two lateral pipes of "T" type pipeline, two lateral pipe ends of "T" type pipeline communicate low temperature water storage tank and high temperature water storage tank respectively, the low temperature water storage tank pass through low temperature backwash pump with low temperature water tank group intercommunication, the high temperature water storage tank pass through high temperature backwash pump with high temperature water tank group intercommunication.
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