A refrigerant valve working condition test bench system

Abstract

The present application relates to the technical field of refrigerant valve testing, and discloses a refrigerant valve working condition test bench system, which has the technical scheme as follows: a high-pressure tank area is provided, and the high-pressure tank area comprises a first tank body, which is configured to comprise a first gaseous area and a first liquid area in communication; in the present application, the first tank body and a second tank body are provided to simultaneously store a certain amount of refrigerant; the first tank body cooperates with a temperature rising part to replace the function of the temperature rising part in a compressor system; the second tank body cooperates with a temperature dropping part to replace the temperature dropping part in the compressor system; compared with the complex compressor system for testing the refrigerant valve, the structure of the present application is simpler, the two tank bodies can store refrigerant, the separately provided storage container in the prior art is saved, and the test bench is monitored and controlled by means of a liquid level switch, a pressure sensor, a pressure difference sensor, a temperature sensor and other components, so that the state of the refrigerant valve under actual working conditions can be simulated.

Description

Technical Field

[0001] This invention relates to the field of refrigerant valve testing technology, and more specifically to a refrigerant valve operating condition testing bench system. Background Technology

[0002] Refrigerant valves regulate the flow of refrigerant based on indoor temperature, thereby controlling the indoor temperature. As a result, the application of refrigerant valves is constantly expanding, with widespread use in both household and industrial applications. Refrigerant valves mainly include solenoid valves, check valves, and electronic expansion valves. These valves are crucial for controlling the refrigerant in the refrigeration system, making performance testing of refrigerant valves particularly important. Existing refrigerant valve testing relies on the complex piping system of compressor equipment, which is too costly. Therefore, a lower-cost system with a simpler piping system is needed. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a refrigerant valve operating condition test bench system to overcome the above-mentioned defects in the existing technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a refrigerant valve operating condition test bench system, comprising a high-pressure tank area, the high-pressure tank area comprising a first tank body, the first tank body being configured to include a first gaseous zone and a first liquid zone communicating with each other, the first gaseous zone being located on one side of the discharge end of the first tank body, and the first liquid zone being located on one side of the inlet end of the first tank body; and

[0005] A heating section, configured to provide heat to the high-pressure tank area; and

[0006] The operating condition test area has an inlet connected to the outlet of the first tank via a first pipe. The test area is constructed to include several parallel test pipes, each equipped with a mounting position for a refrigerant valve.

[0007] The low-pressure tank area includes a second tank, the inlet of which is connected to the outlet of the operating condition test area via a second pipeline, and the pressure inside the second tank is lower than the pressure inside the first tank; and

[0008] A cooling section, configured to provide cooling to the low-pressure tank area, and

[0009] The conveying zone has an inlet end connected to the outlet end of the second tank of the low-pressure tank area via a third pipe, and an outlet end connected to the inlet end of the first tank via a fourth pipe. The conveying zone includes at least one refrigerant pump configured to convey refrigerant from the second tank to the first tank.

[0010] As a further improvement of the present invention, the working condition test area further includes a third temperature sensor, a fourth temperature sensor, and a second pressure sensor. The third temperature sensor is disposed on the first pipe, and the fourth temperature sensor and the second pressure sensor are disposed on the second pipe. A test pressure sensor and a differential pressure sensor are respectively disposed on each of the plurality of test pipes. The test pressure sensor is disposed on one side of the inlet end of the installation position, and the differential pressure sensor is configured to read the pressure difference between the inlet end and the outlet end of the installation position.

[0011] As a further improvement of the present invention, the heating section includes a first heating zone, which is configured to be at least partially located in the first liquid zone and is configured to provide heat to the refrigerant entering the first tank.

[0012] As a further improvement of the present invention, the heating section includes a second heating zone disposed on the first pipe, and the second heating zone is configured to provide heat to the first pipe.

[0013] As a further improvement of the present invention, the heating section further includes a third heating zone, which is disposed on the fourth pipe. The third heating zone includes a first heat exchanger, a fifth pipe, a heating constant temperature bath, and a first water pump. The first heat exchanger includes a first passage and a second passage. The fourth pipe is connected to the first passage, and the fifth pipe is connected to the second passage. The fifth pipe, the heating constant temperature bath, and the first water pump form a loop.

[0014] As a further improvement of the present invention, the cooling section includes a first cooling zone, which is disposed on the second pipe. The first cooling zone includes a precooling heat exchanger and a sixth pipe. The precooling heat exchanger includes a third passage and a fourth passage. The third passage is connected to the second pipe, and the fourth passage is connected to the sixth pipe.

[0015] As a further improvement of the present invention, the cooling section further includes a second cooling zone, which is disposed on the third pipe. The second cooling zone includes a second heat exchanger, a seventh pipe, a cooling constant temperature bath, and a second water pump. The second heat exchanger includes a fifth passage and a sixth passage. The third pipe is connected to the fifth passage, and the seventh pipe is connected to the sixth passage. The seventh pipe, the cooling constant temperature bath, and the second water pump form a loop.

[0016] As a further improvement of the present invention, a liquid level switch is provided in the first tank body, and the first tank body is configured with a first liquid level point and a second liquid level point. When the refrigerant liquid level is lower than the first liquid level point, the liquid level switch controls the refrigerant pump to start, and when the refrigerant liquid level is lower than the second liquid level point, the liquid level switch controls the refrigerant pump to shut down.

[0017] As a further improvement of the present invention, the delivery area further includes a gas source, a filter and a pressure reducing valve, wherein the gas source, the filter, the pressure reducing valve and the refrigerant pump are connected in sequence.

[0018] The beneficial effects of this invention are as follows: This invention includes a first tank and a second tank that can simultaneously store a certain amount of refrigerant. The first tank, in conjunction with a heating section, replaces the function of the heating section in the compressor system, and the second tank, in conjunction with a cooling section, replaces the cooling section in the compressor system. Compared to using a complex compressor system to test the refrigerant valve, the structure of this invention is simpler. Furthermore, the two tanks can store the refrigerant, eliminating the need for a separate storage container as in existing technologies. By utilizing components such as a level switch, pressure sensor, differential pressure sensor, and temperature sensor to monitor and control the entire test bench, the state of the refrigerant valve under actual operating conditions can be simulated, resulting in more accurate test results for the refrigerant valve. Attached Figure Description

[0019] Figure 1 This is a flowchart of the present invention;

[0020] Figure 2 This is the present invention. Figure 1 Enlarged view of the medium- and high-pressure tank area and the first heating zone;

[0021] Figure 3 This is the present invention. Figure 1 Enlarged view of the second heating zone in the middle;

[0022] Figure 4 This is the present invention. Figure 1 Enlarged view of the medium-load test area;

[0023] Figure 5 This is the present invention. Figure 1 Enlarged view of the first cooling zone in the middle;

[0024] Figure 6 This is the present invention. Figure 1 Enlarged view of the medium and low pressure tank area;

[0025] Figure 7 This is the present invention. Figure 1 Enlarged view of the third heating zone in the middle;

[0026] Figure 8 This is the present invention. Figure 1 Enlarged view of the second cooling zone in the middle;

[0027] Figure 9 This is the present invention. Figure 1 Enlarged view of the central transport area.

[0028] Reference numerals: 1. High-pressure tank area; 11. First tank body; 12. First gaseous zone; 13. First liquid zone; 14. Safety valve; 15. Liquid level switch; 151. First liquid level point; 152. Second liquid level point; 16. Injection pipe; 17. First pressure sensor; 2. Low-pressure tank area; 21. Second tank body; 3. Operating condition test area; 31. Test pipe; 32. Installation position; 33. Third temperature sensor; 34. Test pressure sensor; 35. Fourth temperature sensor; 36. Second pressure sensor; 37. Differential pressure sensor; 4. First heating zone; 41. Refrigerant heating pipe; 42. First temperature sensor; 5. Second heating zone; 51. Electrically controlled heating. 52. Second temperature sensor; 53. Flow meter; 6. Third heating zone; 61. First heat exchanger; 62. Fifth pipe; 63. Heating constant temperature bath; 64. First water pump; 7. First cooling zone; 71. Pre-cooling heat exchanger; 72. Sixth pipe; 73. Fifth temperature sensor; 74. Third pressure sensor; 8. Second cooling zone; 81. Second heat exchanger; 82. Seventh pipe; 83. Cooling constant temperature bath; 84. Second water pump; 9. Delivery zone; 91. Gas source; 92. Filter; 93. Pressure reducing valve; 94. Solenoid valve; 991. First pipe; 95. Refrigerant pump; 992. Second pipe; 993. Third pipe; 994. Fourth pipe. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0030] This embodiment of a refrigerant valve operating condition test bench system includes a high-pressure tank area 1, which includes a first tank 11. The first tank 11 is typically vertical, with its inlet and outlet ends located on its upper and lower sides, respectively. During use, the vertical first tank 11 exhibits significant liquid level changes, facilitating the detection of the liquid level by a level switch 15. The first tank 11 is constructed to include a first gaseous zone 12 and a first liquid zone 13 that are interconnected, with no physical structural barrier between the two zones. When the refrigerant enters the first tank 11, it is heated by a first heating zone 4. The liquid refrigerant in the first liquid zone 13 heats up and rises to the first gaseous zone 12. The first gaseous zone 12 is located on one side of the outlet end of the first tank 11, and the first liquid zone 13 is located on one side of the inlet end of the first tank 11.

[0031] A heating section, configured to provide heat to the high-pressure tank area 1; and

[0032] The operating condition test area 3 has an inlet end connected to the outlet end of the first tank 11 via a first pipe 991. The first pipe 991 and the second pipe 992 constitute the main pipe of the test pipes 31. The operating condition test area 3 is constructed to include several parallel test pipes 31. Each test pipe 31 is equipped with a mounting position 32 for installing a refrigerant valve. The mounting position 32 is threaded to facilitate the replacement of the refrigerant valve under test and the valve that has been tested.

[0033] Low-pressure tank area 2 includes a second tank 21, which is typically vertical with its inlet and outlet located on its upper and lower sides respectively. During use, the liquid level changes are more noticeable in the vertical second tank 21. The second tank 21 is also equipped with a level switch 15, which facilitates the detection of the liquid level within it. The level switches 15 on the first tank 11 and the second tank 21 allow for better adjustment of the pressure and liquid level within both tanks. Because the entire test bench is a circulating loop, the total amount of refrigerant in the two tanks and various pipes is theoretically... It will not increase or decrease. The inlet of the second tank 21 is connected to the outlet of the working condition test area 3 by a second pipe 992. The pressure inside the second tank 21 is less than the pressure inside the first tank 11 because the gas in the first pipe 991 is high-pressure gas after heating, while the gas in the second pipe 992 is low-pressure gas after being cooled and depressurized by the refrigerant valve. Therefore, the pressure in the second tank 21 is less than the pressure in the first tank 11. The pressure difference between the first pipe 991 and the second pipe 992 can be used to continuously open and close the refrigerant valve on the mounting position 32 to evaluate its performance and lifespan.

[0034] A cooling section, configured to provide cooling to the low-pressure tank area 2, and

[0035] The transport zone 9 is used to transport the cooled refrigerant from the second tank 21 to the first tank 11. The inlet of the transport zone 9 is connected to the outlet of the second tank 21 of the low-pressure tank area 2 by a third pipe 993, and the outlet of the transport zone 9 is connected to the inlet of the first tank 11 by a fourth pipe 994. The transport zone 9 includes at least one refrigerant pump 95, which is configured to transport the refrigerant in the second tank 21 to the first tank 11.

[0036] This invention features a first tank 11 and a second tank 21 capable of storing a certain amount of refrigerant. The first tank 11, in conjunction with a heating element, replaces the heating element in the compressor system, while the second tank 21, in conjunction with a cooling element, replaces the cooling element in the compressor system. Compared to using a complex compressor system to test the refrigerant valve, this invention has a simpler structure. Furthermore, the two tanks effectively store the refrigerant, eliminating the need for a separate storage container as in existing technologies. The entire test bench is monitored and controlled using components such as a level switch 15, a pressure sensor, a differential pressure sensor 37, and a temperature sensor, simulating the refrigerant valve's state under actual operating conditions, resulting in more accurate test results.

[0037] In one embodiment, the operating condition test zone 3 further includes a third temperature sensor 33, a fourth temperature sensor 35, and a second pressure sensor 36. The third temperature sensor 33 is disposed on the first pipe 991 and is used to detect the temperature of the gaseous refrigerant before it enters the operating condition test zone 3. The fourth temperature sensor 35 and the second pressure sensor 36 are disposed on the second pipe 992. The fourth temperature sensor 35 is used to detect the temperature of the gaseous refrigerant after it passes through the operating condition test zone 3, and the second pressure sensor 36 is used to detect the gas pressure of the gaseous refrigerant after it passes through the operating condition test zone 3. Each of the plurality of test pipes 31 is respectively provided with a test pressure sensor 34 and a differential pressure sensor 37. Because in order to ensure that the gas pressure of the gaseous refrigerant before entering the test pipe 31 is kept as consistent as possible, it is necessary to separately set up a test pressure sensor and a differential pressure sensor 37. The test pressure sensor 34 is disposed on one side of the inlet end of the mounting position 32, and the differential pressure sensor 37 is configured to read the pressure difference between the inlet end and the outlet end of the mounting position 32.

[0038] In one embodiment, the heating section includes a first heating zone 4, which is configured to be at least partially located in the first liquid zone 13. The first heating zone 4 is configured to provide heat to the refrigerant entering the first tank 11. The first heating zone 4 is used to directly heat the liquid refrigerant in the first tank 11, causing it to change from a liquid state to a gaseous state.

[0039] Specifically, the first heating zone 4 includes a refrigerant heating tube 41, which heats the liquid refrigerant in the refrigerant tube by electric heating. At the same time, a first temperature sensor 42 is also installed in the first tube. In actual use, in order to simulate different working conditions, the temperature and pressure of the gaseous refrigerant generated in the tube are different. Therefore, the first temperature sensor 42 is required. A first pressure sensor 17 is also required on the first pipe 991 to detect the pressure of the gaseous refrigerant after heating in the first heating zone 4.

[0040] Specifically, both the first tank 11 and the second tank 21 are equipped with a safety valve 14. When the pressure or temperature inside the tank is too high, the safety valve 14 opens to cool down or relieve pressure.

[0041] In one embodiment, the heating section includes a second heating zone 5, which is disposed on the first pipe 991. The second heating zone 5 is configured to provide heat to the first pipe 991. During the operation of the test bench, it is necessary to ensure the stability of the gaseous refrigerant state when entering the test condition. Therefore, a second heating zone 5 with a smaller power is set on the first pipe 991. This not only reduces the cooling of the refrigerant during its passage through the first pipe 991, but also controls the superheat of the refrigerant in the first pipe 991, further heating the refrigerant in the first pipe 991, and also reduces the working pressure of the first heating zone 4.

[0042] Specifically, the second heating zone 5 includes several electrically controlled heating strips 51 connected in parallel and wound around the first pipe 991.

[0043] Specifically, a second temperature sensor 52 and a flow meter 53 are also installed on the first pipe 991, both of which are located downstream of the heating zone. The second temperature sensor 52 and the first flow meter 53 are used to detect the state of the gaseous refrigerant after passing through the second heating zone 5.

[0044] In one embodiment, the heating section further includes a third heating zone 6, which is disposed on the fourth pipe 994. The third heating zone 6 includes a first heat exchanger 61, a fifth pipe 62, a heating constant temperature bath 63, and a first water pump 64. The first heat exchanger 61 includes a first passage and a second passage. The fourth pipe 994 is connected to the first passage, and the fifth pipe 62 is connected to the second passage. The fifth pipe 62, the heating constant temperature bath 63, and the first water pump 64 form a loop. During use on the operating condition test bench, the second tank... The temperature of the liquid refrigerant discharged from tank 21 is usually low. If it is directly introduced into the first tank 11, it may cause instability in the temperature of the refrigerant in the first tank 11, thus affecting the test results. Therefore, the setting of the third heating zone 6 can ensure that the temperature of the refrigerant entering the first tank 11 is high, and at the same time reduce the working pressure of the first heating zone 4. The setting of the heating constant temperature bath 63 can ensure that the temperature of the liquid refrigerant passing through the third heating zone 6 is consistent. At the same time, the power of the heating constant temperature bath 63 can be adjusted to adjust the required temperature of the liquid refrigerant passing through the third heating zone 6.

[0045] Specifically, the first heat exchanger 61 includes, but is not limited to, shell-and-tube heat exchangers, plate heat exchangers, etc.

[0046] In one embodiment, the cooling section includes a first cooling zone 7, which is disposed on the second pipe 992. The first cooling zone 7 includes a precooling heat exchanger 71 and a sixth pipe 72. The precooling heat exchanger 71 includes a third passage and a fourth passage. The third passage is connected to the second pipe 992, and the fourth passage is connected to the sixth pipe 72. The first cooling zone 7 can initially cool the gaseous refrigerant, ensuring that the pressure and temperature in the second pipe 992 can drop rapidly, forming a pressure difference with the first pipe 991.

[0047] Specifically, a valve body is provided on the sixth pipe 72 for controlling the opening and closing of the sixth pipe 72.

[0048] Specifically, the first cooling zone 7 also includes a third pressure sensor 74 and a fifth temperature sensor 73, both of which are located downstream of the precooling heat exchanger 71.

[0049] In one embodiment, the cooling section further includes a second cooling zone 8, which is disposed on the third pipe 993. The second cooling zone 8 includes a second heat exchanger 81, a seventh pipe 82, a cooling constant temperature bath 83, and a second water pump 84. The second heat exchanger 81 includes a fifth passage and a sixth passage. The third pipe 993 is connected to the fifth passage, and the seventh pipe 82 is connected to the sixth passage. The seventh pipe 82, the cooling constant temperature bath 83, and the second water pump 84 form a loop. During the use of the test bench, the temperature of the refrigerant passing through the first cooling zone 7 is usually not reduced to the required value and is usually still in a gaseous state. If it is directly introduced into the second tank 21, it may cause instability of the refrigerant state and excessive pressure in the second tank 21, thereby affecting the state of the second tank 21. The setting of the cooling constant temperature bath 83 can ensure that the temperature of the liquid refrigerant passing through the second cooling zone 8 is consistent. At the same time, the power of the cooling constant temperature bath 83 can be adjusted to adjust the required temperature of the liquid refrigerant passing through the third heating zone 6.

[0050] Specifically, the second heat exchanger 81 includes, but is not limited to, shell-and-tube heat exchangers, plate heat exchangers, etc.

[0051] In one embodiment, a liquid level switch 15 is provided inside the first tank 11, and the first tank 11 is configured with a first liquid level point 151 and a second liquid level point 152. When the refrigerant liquid level is lower than the first liquid level point 151, the liquid level switch 15 controls the refrigerant pump 95 to start, and when the refrigerant liquid level is lower than the second liquid level point 152, the liquid level switch 15 controls the refrigerant pump 95 to shut down.

[0052] In one embodiment, both the first tank 11 and the second tank 21 are provided with an injection pipe 16. The injection pipe 16 is provided with a valve body for controlling the injection pipe 16. When the refrigerant in the test bench is lost to a certain amount, refrigerant can be injected into the test bench through the injection pipe 16.

[0053] In one embodiment, the delivery zone 9 further includes a gas source 91, a filter 92, and a pressure reducing valve 93. The gas source 91, the filter 92, the pressure reducing valve 93, and the refrigerant pump 95 are connected in sequence to ensure that the gas generated by the gas source 91 is a stable low-pressure gas. The refrigerant pump 95 is pneumatically driven.

[0054] Specifically, when there are several refrigerant pumps 95, the pipes on the several refrigerant pumps 95 are connected in parallel, and each is equipped with a solenoid valve 94 with an individual switch.

[0055] Working principle: The refrigerant valve to be tested is installed on the mounting position 32. Then, the first heating zone 4, the second heating zone 5, the third heating zone 6, the first cooling zone 7, and the second cooling zone 8 are opened one by one. The refrigerant, after being heated in the first tank 11 to reach the specified temperature and pressure, is in a gaseous state. Then, it is heated through the second heating zone 5 to control its superheat, and then enters the operating condition test zone 3. By continuously opening and closing the refrigerant valve, the pressure difference between the first pipe 991 and the second pipe 992 is used to impact the refrigerant valve and test its performance. The gaseous refrigerant passing through the operating condition test zone 3 first passes through the first cooling zone 7 to initially cool down the gaseous refrigerant. Then, it passes through the second cooling zone 8 to convert the refrigerant into a liquid state before entering the second tank 21. Then, it is drawn by the refrigerant pump 95 from the third pipe 993 into the fourth pipe 994. The low-temperature liquid refrigerant is heated to the specified temperature through the third heating zone 6 and then sent back into the first tank 11, thus completing the cycle test.

[0056] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A refrigerant valve operating condition test bench system, characterized in that: The system includes a high-pressure tank area (1), which includes a first tank body (11) configured to include a first gaseous zone (12) and a first liquid zone (13) communicating with each other. The first gaseous zone (12) is located on one side of the discharge end of the first tank body (11), and the first liquid zone (13) is located on one side of the inlet end of the first tank body (11). A heating section is configured to provide heat to the high-pressure tank area (1); as well as The working condition test area (3) is connected to the discharge end of the first tank (11) by a first pipe (991). The working condition test area (3) is constructed to include several test pipes (31) arranged in parallel. Each test pipe (31) is equipped with a mounting position (32) for installing a refrigerant valve. A low-pressure tank area (2), comprising a second tank (21), wherein the inlet of the second tank (21) is connected to the outlet of the working condition test area (3) by a second pipe (992), and the pressure inside the second tank (21) is less than the pressure inside the first tank (11); and A cooling section, configured to provide cooling to the low-pressure tank area (2), and The conveying area (9) has an inlet end connected to the outlet end of the second tank (21) of the low-pressure tank area (2) via a third pipe (993), and an outlet end connected to the inlet end of the first tank (11) via a fourth pipe (994). The conveying area (9) includes at least one refrigerant pump (95) configured to convey refrigerant from the second tank (21) to the first tank (11).

2. The refrigerant valve operating condition test bench system according to claim 1, characterized in that: The working condition test area (3) also includes a third temperature sensor (33), a fourth temperature sensor (35), and a second pressure sensor (36). The third temperature sensor (33) is disposed on the first pipe (991), and the fourth temperature sensor (35) and the second pressure sensor (36) are disposed on the second pipe (992). A test pressure sensor (34) and a differential pressure sensor (37) are respectively disposed on several test pipes (31). The test pressure sensor (34) is disposed on one side of the inlet end of the mounting position (32), and the differential pressure sensor is configured to read the pressure difference between the inlet end and the outlet end of the mounting position (32).

3. The refrigerant valve operating condition test bench system according to claim 1, characterized in that: The heating section includes a first heating zone (4), which is configured to be at least partially located in the first liquid zone (13) and is configured to provide heat to the refrigerant entering the first tank (11).

4. The refrigerant valve operating condition test bench system according to claim 1, characterized in that: The heating section includes a second heating zone (5), which is disposed on the first pipe (991) and is configured to provide heat to the first pipe (991).

5. The refrigerant valve operating condition test bench system according to claim 1, characterized in that: The heating section further includes a third heating zone (6), which is disposed on the fourth pipe (994). The third heating zone (6) includes a first heat exchanger (61), a fifth pipe (62), a heating constant temperature bath (63), and a first water pump (64). The first heat exchanger (61) includes a first passage and a second passage. The fourth pipe (994) is connected to the first passage, and the fifth pipe (62) is connected to the second passage. The fifth pipe (62), the heating constant temperature bath (63), and the first water pump (64) form a loop.

6. The refrigerant valve operating condition test bench system according to claim 1, characterized in that: The cooling section includes a first cooling zone (7), which is disposed on the second pipe (992). The first cooling zone (7) includes a precooling heat exchanger (71) and a sixth pipe (72). The precooling heat exchanger (71) includes a third passage and a fourth passage. The third passage is connected to the second pipe (992), and the fourth passage is connected to the sixth pipe (72).

7. The refrigerant valve operating condition test bench system according to claim 1, characterized in that: The cooling section further includes a second cooling zone (8), which is disposed on the third pipe (993). The second cooling zone (8) includes a second heat exchanger (81), a seventh pipe (82), a cooling constant temperature bath (83), and a second water pump (84). The second heat exchanger (81) includes a fifth passage and a sixth passage. The third pipe (993) is connected to the fifth passage, and the seventh pipe (82) is connected to the sixth passage. The seventh pipe (82), the cooling constant temperature bath (83), and the second water pump (84) form a loop.

8. The refrigerant valve operating condition test bench system according to claim 1, characterized in that: The first tank (11) is equipped with a liquid level switch (15). The first tank (11) is configured with a first liquid level point (151) and a second liquid level point (152). When the refrigerant level is lower than the first liquid level point (151), the liquid level switch (15) controls the refrigerant pump (95) to start. When the refrigerant level is lower than the second liquid level point (152), the liquid level switch (15) controls the refrigerant pump (95) to shut down.

9. A refrigerant valve operating condition test bench system according to claim 1, characterized in that: The delivery area (9) also includes a gas source (91), a filter (92) and a pressure reducing valve (93), which are connected in sequence.

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