CN112781862A - Refrigerant valve performance test system - Google Patents

Abstract

The invention innovatively provides a refrigerant valve performance testing system which comprises a compressor unit, a gas temperature controller, a first testing tool area, a condenser, a supercooling thermostat, a second testing tool area, a third testing tool area, an evaporator and a fourth testing tool area, wherein the compressor unit is used for compressing refrigerant into gaseous refrigerant, the gaseous refrigerant sequentially passes through the gas temperature controller, the first testing tool area, the condenser, the supercooling thermostat, the second testing tool area, the third testing tool area, the evaporator, the fourth testing tool area and the compressor unit through a connecting pipeline, the condenser is used for condensing the gaseous refrigerant into liquid refrigerant, and the evaporator is used for converting atomized small liquid refrigerant into the gaseous refrigerant; the invention has the advantages that: the high-precision multi-performance detection of the new energy automobile refrigeration environment can be simulated.

Description

Refrigerant valve performance test system

Technical Field

The invention relates to the technical field of refrigerant valve testing, in particular to a refrigerant valve performance testing system.

Background

The refrigerant valve refers to the regulation and control of refrigerant flow according to the indoor temperature, so as to realize the control of the indoor temperature, therefore, the application field of the refrigerant valve is continuously expanded, the refrigerant valve is widely applied in household and industry, along with the increasing of the policy supporting force of the new energy automobile, the refrigerant valve applied in the new energy automobile is more common, the quality requirement of the valve used for controlling the temperature in the automobile is stricter as the new energy automobile, the high quality of the internal parts of the automobile can drive the industry of the new energy automobile, and aiming at the refrigerating system of the new energy automobile, the refrigerant valve mainly comprises three types, which are respectively: the three valves are the most important to control refrigerant media in a refrigeration system, so that the three valves are particularly important to performance detection of the refrigerant valve, and no environment simulation high-precision detection device specially aiming at the refrigerant valve exists in current manufacturers.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a high-precision refrigerant valve performance detection system capable of simulating the refrigeration environment of a new energy automobile, which is used for overcoming the defects in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

a refrigerant valve performance testing system comprises a compressor unit, a gas temperature controller, a first testing tool area, a condenser, a supercooling thermostat, a second testing tool area, a third testing tool area, an evaporator and a fourth testing tool area, wherein the compressor unit is used for compressing refrigerant medium into gaseous refrigerant medium, the gaseous refrigerant medium sequentially passes through the gas temperature controller, the first testing tool area, the condenser, the supercooling thermostat, the second testing tool area, the third testing tool area, the evaporator, the fourth testing tool area and the compressor unit through connecting pipelines, the first testing tool area comprises a first testing main circuit, a first testing branch circuit, a first station to be tested, a first differential pressure sensor and two groups of first pressure sensors, the first testing branch circuit is connected to the first testing main circuit in parallel, and the first station to be tested is connected to the first testing branch circuit, the first station to be tested is provided with a solenoid valve to be tested, the two groups of first pressure sensors are respectively positioned at two ends of the first station to be tested, the first differential pressure sensor is connected with the two groups of first pressure sensors, a first test shunt at the front side of the first station to be tested is provided with a first stop valve, the first test shunt is also provided with a first flowmeter, and a first main test path is provided with a first regulating valve and a first temperature sensor;

the condenser is used for condensing gaseous refrigerant medium to liquid refrigerant medium, the supercooling thermostat comprises a box body, a water cooling component and a supercooling pipe, the water cooling component and the supercooling pipe are positioned in the box body, constant temperature material is filled in the box body, one end of the supercooling pipe is connected with the first main test path, the other end of the supercooling pipe is connected with the second main test path, and the water cooling component is wound on the supercooling pipe;

the second test tool area comprises a second test main path, a second test branch path, a second station to be tested, a second differential pressure sensor and two groups of second pressure sensors, the second test branch path is connected to the second test main path in parallel, the second station to be tested is connected to the second branch path to be tested, a check valve to be tested is placed on the second station to be tested, the two groups of second pressure sensors are respectively located at two ends of the second station to be tested, the second differential pressure sensor is connected with the two groups of second pressure sensors, a second stop valve is arranged on the second test branch path on the front side of the second station to be tested, a second flowmeter is further arranged on the second test branch path, and a second regulating valve and a second temperature sensor are arranged on the second test main path;

the third test tool area comprises a third test main path, a third test branch path, a third station to be tested and two groups of third pressure sensors, the third test branch path is connected to the third test main path in parallel, the third station to be tested is connected to the third branch path to be tested, an expansion valve to be tested is placed on the third station to be tested, the two groups of third pressure sensors are respectively positioned at two ends of the third station to be tested, a third stop valve is arranged on the third test branch path on the front side of the third station to be tested, a third flow meter is further arranged on the third test branch path, an electronic expansion valve and a third temperature sensor are further arranged on the third test main path, and the electronic expansion valve is used for atomizing the liquid cold medium into a small liquid;

the evaporator is used for converting atomized small liquid refrigerant medium into gaseous refrigerant medium.

The fourth test tool area comprises a fourth test main path, a fourth test branch path, a fourth station to be tested, a third differential pressure sensor and two groups of fourth pressure sensors, the fourth test branch path is connected to the fourth test main path in parallel, the fourth station to be tested is connected to the fourth branch path to be tested, a check valve to be tested is placed on the fourth station to be tested, the two groups of fourth pressure sensors are respectively located at two ends of the fourth station to be tested, the third differential pressure sensor is connected with the two groups of fourth pressure sensors, a fourth stop valve is arranged on the fourth test branch path on the front side of the fourth station to be tested, a fourth flow meter is further arranged on the fourth test branch path, and a third regulating valve and a fourth temperature sensor are arranged on the fourth test main path;

further, still including the comdenstion water cooling district, including water heat exchanger and hydrologic cycle thermostated container in the comdenstion water cooling district, be equipped with first pipeline between condenser and the water heat exchanger, be equipped with the second pipeline between water heat exchanger and the hydrologic cycle thermostated container, be equipped with the third pipeline between hydrologic cycle thermostated container and the condenser, be equipped with fifth temperature sensor and ball valve on the first pipeline, be equipped with sixth temperature sensor and first check valve on the second pipeline, be equipped with first filter, condensate pump and condensate water flowmeter on the third pipeline.

Further, still including evaporation temperature adjusting zone, including fourth pipeline and fifth pipeline in the evaporation temperature adjusting zone, fourth pipeline one end is connected with the evaporimeter, and the other end is connected with the hydrologic cycle thermostated container, fifth pipeline one end is connected with the hydrologic cycle thermostated container, and the other end is connected with the evaporimeter, be equipped with seventh temperature sensor and second check valve on the fourth pipeline, be equipped with second filter, evaporation water pump and evaporation water flowmeter on the fifth pipeline.

Furthermore, the compressor unit comprises a compressor body, a pressure controller, an exhaust temperature protector and an oil separator, wherein the pressure controller and the exhaust temperature protector are both connected to the compressor body, and an oil stain return pipe is arranged between the oil separator and the compressor body.

Further, a liquid storage device and a drying filter are arranged between the supercooling thermostat and the second testing tool area, the liquid storage device is used for collecting liquid refrigerant media after the supercooling thermostat is supercooled, and the drying filter is used for filtering impurities in the liquid refrigerant media flowing to the second testing tool area from the liquid storage device.

Furthermore, a test branch is further arranged on the first test branch, the test branch is connected to the first test branch in parallel, and an electromagnetic valve and a branch flowmeter are respectively arranged on the first test branch and the test branch.

Furthermore, the water cooling component comprises a water cooling pipe, a cold water tank and two groups of external pipes, the water cooling pipe is wound on the outer ring of the super-cooling pipe, a water inlet is formed in a side wall of the upper end of the tank body, a water outlet is formed in a side wall of the lower end of the tank body, two ends of the water cooling pipe penetrate through the water inlet and the water outlet respectively to be connected with the two groups of external pipes and communicated with the two groups of external pipes, the two groups of external pipes are connected to the cold water tank and communicated with the cold water tank, and a pressure pump is further arranged on the.

Furthermore, a first vacuum joint is arranged on the first test branch, the first vacuum joint is located on a first test branch after the refrigerant medium flows through the first test station, a second vacuum joint is arranged on the second test branch, the second vacuum joint is located on a second test branch after the refrigerant medium flows through the second test station, a third vacuum joint is arranged on a third test branch, the third vacuum joint is located on a third test branch after the refrigerant medium flows through the third test station, fourth vacuum joints are arranged on the fourth test branches, and the fourth vacuum joints are located on the fourth test branch after the refrigerant medium flows through the fourth test station.

Furthermore, a refrigerant joint and a fifth vacuum joint are arranged between the fourth test tool area and the compressor unit.

Furthermore, an eighth temperature sensor and a fifth pressure sensor are arranged between the first test tool area and the condenser, and a ninth temperature sensor and a sixth pressure sensor are arranged between the condenser and the supercooling thermostatic bath.

The invention has the beneficial effects that: the refrigerant medium is pressurized to a preset pressure by a compressor set, and simultaneously the refrigerant medium is raised to a certain temperature by the compressor set during pressurization, so that the original liquid refrigerant medium is compressed into a gaseous refrigerant medium, the gaseous refrigerant medium is subjected to temperature control by a gas temperature controller to reach the temperature required by a first test tool area, the performance detection of the electromagnetic valve can be achieved, the gaseous refrigerant medium is condensed into the liquid refrigerant medium by a condenser, a small amount of uncondensed gaseous refrigerant medium is completely condensed into the liquid refrigerant medium by auxiliary condensation of a supercooling thermostat, the performance detection of a one-way valve in a second test tool area is achieved, the pressure of the liquid refrigerant medium flowing to an electronic expansion valve in a third test tool area is adjusted by a flowmeter, the performance detection of the electronic expansion valve can be achieved, the electronic expansion valve can atomize the liquid refrigerant medium into small water drops, the evaporator is used for completely gasifying the small water drop-shaped refrigerant medium into gaseous refrigerant medium, the pressure of the gaseous refrigerant medium is adjusted by the adjusting valve, so that other performance detection is carried out on the check valve in the fourth test tool, and the check valve is finally emptied or flows to the compressor unit.

Drawings

FIG. 1 is an overall system diagram of the present invention;

FIG. 2 is a block diagram of a first test fixture area of the present invention;

FIG. 3 is a block diagram of a second test fixture area of the present invention;

FIG. 4 is a block diagram of a third test fixture area of the present invention;

FIG. 5 is a block diagram of a fourth test fixture area of the present invention;

FIG. 6 is a structural view of a condensed water cooling zone in the present invention;

FIG. 7 is a structural view of an evaporation temperature adjusting region in the present invention;

FIG. 8 is a block diagram of a supercooling thermostat of the present invention;

fig. 9 is a structural view of a supercooling thermostat of the present invention.

Reference numerals: 1. a compressor unit; 1011. a compressor body; 1021. a pressure controller; 1031. an exhaust temperature protector; 1041. an oil separator; 2. a gas temperature controller; 3. a first test fixture area; 31. a first test main road; 32. a first test shunt; 33. a first station to be tested; 34. a first differential pressure sensor; 35. a first pressure sensor; 36. a first shut-off valve; 37. a first flow meter; 38. a first regulating valve; 39. a first temperature sensor; 4. a condenser; 5. a supercooling thermostat; 51. a box body; 52. a supercooling pipe; 53. a water-cooled tube; 54. a cold water tank; 55. an external pipe; 56. a pressure pump; 6. a second test fixture area; 61. a second test main road; 62. a second test shunt; 63. a second station to be tested; 64. a second differential pressure sensor; 65. a second pressure sensor; 66. a second stop valve; 67. a second flow meter; 68. a second regulating valve; 69. a second temperature sensor; 7. a third test fixture area; 71. a third test main road; 72. a third test shunt; 73. a third station to be tested; 74. a third pressure sensor; 75. a third stop valve; 76. a third flow meter; 77. an electronic expansion valve; 78. a third temperature sensor; 79. a liquid viewing mirror; 8. an evaporator; 9. a fourth test fixture area; 91. a fourth test main road; 92. a fourth test shunt; 93. a fourth station to be tested; 94. a third differential pressure sensor; 95. a fourth pressure sensor; 96. a fourth stop valve; 97. a fourth flow meter; 98. a third regulating valve; 99. a fourth temperature sensor; 10. a condensate cooling zone; 101. a water-water heat exchanger; 102. a first conduit; 103. a second conduit; 104. a third pipeline; 105. a fifth temperature sensor; 106. a sixth temperature sensor; 107. a first check valve; 108. a first filter; 109. a condensate pump; 110. a condensed water flow meter; 11. an evaporation temperature adjusting area; 111. a fourth conduit; 112. a fifth pipeline; 113. a seventh temperature sensor; 114. a second one-way valve; 115. a second filter; 116. an evaporation water pump; 117. an evaporated water flow meter; 12. a water circulation thermostat; 13. a reservoir; 14. drying the filter; 15. testing the branch circuit; 16. a first vacuum connection; 17. a second vacuum connection; 18. a third vacuum connection; 19. a fourth vacuum connection; 20. a refrigerant joint; 21. a fifth vacuum connection; 22. an eighth temperature sensor; 23. a fifth pressure sensor; 24. a ninth temperature sensor; 25. and a sixth pressure sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The embodiments of the invention will be described in further detail below with reference to the accompanying drawings:

the new energy automobile industry can be driven by the high quality of automobile internal parts, and aiming at a refrigerating system of a new energy automobile, the refrigerant valve mainly comprises three types, namely: the refrigerant valve performance testing system is designed as shown in the specific structure of a figure 1-9, and comprises a compressor unit 1, a gas temperature controller 2, a first testing tool area 3, a condenser 4, a supercooling constant temperature box 5, a second testing tool area 6, a third testing tool area 7, an evaporator 8 and a fourth testing tool area 9, wherein the compressor unit 1 is used for compressing refrigerant into gaseous refrigerant, and the gaseous refrigerant sequentially passes through the gas temperature controller 2, the first testing tool area 3, the condenser 4, the supercooling constant temperature box 5, the second testing tool area 6, the first testing tool area 3, the second testing tool area 6, the second testing tool area 3, the electronic expansion valve 77 and the refrigerant valve in a refrigerating system through a connecting pipeline, The system comprises a third testing tool area 7, an evaporator 8, a fourth testing tool area 9 and a compressor unit 1, wherein the temperature of a gas temperature controller 2 is controlled by a water cooling mode, the temperature of the compressor unit 1 is very high when a coal cooling medium is compressed into a gaseous coal cooling medium, so that the gas temperature controller 2 needs to be cooled by water cooling in the gas temperature controller 2, a cooling water inlet pipe and a cooling water outlet pipe are respectively arranged at two ends of the gas temperature controller 2, an electric ball valve is arranged on the cooling water inlet pipe, and a full-bore ball valve is arranged on the cooling water outlet; the first test tool area 3 comprises a first test main path 31, a first test branch path 32, a first station to be tested 33, a first differential pressure sensor 34 and two groups of first pressure sensors 35, the first test branch path 32 is connected to the first test main path 31 in parallel, the first station to be tested 33 is connected to the first test branch path 32, a solenoid valve to be tested is placed on the first station to be tested 33 (the first test tool area 3 mainly comprises a test function, an MOPV test, a pressure loss test and a noise test, wherein the MOPV test requires the precondition that the flow rate of gaseous refrigerant medium is 240g/s, the pressure of gaseous refrigerant medium is 2.9MPa +/-0.15 MPa, the pressure loss test requires the precondition that the flow rate of gaseous refrigerant medium is 155g/s, the temperature of gaseous refrigerant medium is 95 +/-5 ℃, and the inlet pressure of the solenoid valve to be tested is 2.6 +/-0.15 MPa), two groups of first pressure sensors 35 are respectively positioned at two ends of a first station to be tested 33, a first differential pressure sensor 34 is connected with the two groups of first pressure sensors 35, a first cut-off valve 36 is arranged on a first test branch 32 at the front side of the first station to be tested 33, a first flow meter 37 is further arranged on the first test branch 32, a first regulating valve 38 and a first temperature sensor 39 are arranged on a first main test path 31, wherein the first flow meter 37 and the first regulating valve 38 are used for ensuring the stable operation of the whole system, when gaseous refrigerant medium flows to the first test branch 32 and the first main test path 31 simultaneously, the flow on the first test branch 32 is detected according to the first flow meter 37 so as to adjust the first regulating valve 38 and control the flow of the first main test path 31, the total flow of the first test branch 32 and the first main test path 31 is unchanged, and the whole system can normally and stably operate all the time, the first temperature sensor 39 detects whether the temperature of the gaseous refrigerant medium flowing into the first test fixture meets the requirement of the pressure loss test of the solenoid valve to be tested.

Since the test in the second test fixture area 6 requires a liquid refrigerant medium, the gaseous refrigerant medium needs to be condensed into a liquid state, the condenser 4 in the present invention is used for condensing the gaseous refrigerant medium into the liquid refrigerant medium, as shown in fig. 9, the supercooling thermostat 5 includes a box body 51, a water cooling module and a supercooling pipe 52 located in the box body 51, the box body 51 is filled with a constant temperature material (the constant temperature material is silicone oil), one end of the supercooling pipe 52 is connected with the first main test path 31, the other end is connected with the second main test path 61, the water cooling module is wound on the supercooling pipe 52, the water cooling module includes a water cooling pipe 53, a cold water tank 54 and two sets of external pipes 55, the water cooling pipe 53 is wound on the outer ring of the supercooling pipe 52, one side wall at the upper end of the box body 51 is provided with a water inlet, one side wall at the lower end of the box body 51 is provided with a water outlet, two ends of the water cooling, the two groups of external pipes 55 are connected and communicated with the cold water tank 54, and the external pipes 55 connected with the water cooling pipe 53 penetrating out of the water inlet are also provided with a pressure pump 56.

The second testing tool area 6 comprises a second testing main path 61, a second testing branch path 62, a second station to be tested 63, a second differential pressure sensor 64 and two groups of second pressure sensors 65, the second testing branch path 62 is connected to the second testing main path 61 in parallel, the second station to be tested 63 is connected to the second station to be tested, a check valve to be tested is placed on the second station to be tested 63 (the second testing tool area 6 mainly has testing functions including pressure loss testing and noise testing, the pressure loss testing requires the precondition that the flow rate of gaseous refrigerant medium is required to reach 210g/s, the inlet pressure of the check valve to be tested is required to reach 2.4 +/-0.15 MPa, the supercooling is required to reach 5 +/-1 ℃, the water cooling temperature in the supercooling thermostat 5 in the preamble is required to be 5 +/-1 ℃ lower than the temperature of the liquid refrigerant medium flowing into the supercooling thermostat 5), the two groups of second pressure sensors 65 are respectively located at two ends of the second station to be tested 63, the second differential pressure sensor 64 is connected with two groups of second pressure sensors 65, a second stop valve 66 is arranged on the second test branch 62 at the front side of the second station to be tested 63, a second flowmeter 67 is also arranged on the second test branch 62, a second regulating valve 68 and a second temperature sensor 69 are arranged on the second main test path 61, the second flow meter 67 and the second regulating valve 68 are used for ensuring that the whole system runs smoothly, when the liquid refrigerant medium flows simultaneously to the second test shunt circuit 62 and to the second main test circuit 61, the flow on the second testing branch 62 is detected according to the second flow meter 67 so as to adjust the second regulating valve 68, and control the flow of the second testing main path 61, so that the total flow of the second testing branch 62 and the second testing main path 61 is unchanged, the whole system can always run normally and smoothly, and the second temperature sensor 69 detects whether the temperature of the liquid refrigerant medium flowing into the second testing tool reaches the requirement of supercooling 5 +/-1 ℃.

The third test fixture area 7 comprises a third main test path 71, a third test branch 72, a third station to be tested 73 and two sets of third pressure sensors 74, the third test branch 72 is connected in parallel with the third main test path 71, the third station to be tested 73 is connected with the third branch to be tested, an expansion valve to be tested is placed on the third station to be tested 73 (the main test functions of the third test fixture area 7 include MOPD test, MOPV test, minimum open valve pulse test, flow curve test and noise test, the MOPD test requires that the flow rate of the liquid refrigerant medium needs to reach 240g/s, the pressure of the liquid refrigerant medium needs to reach 2.9MPa +/-0.15 MPa, the MOPV test requires that the flow rate of the liquid refrigerant medium needs to reach 240g/s, the pressure of the liquid refrigerant medium needs to reach 2.9MPa +/-0.15 MPa, and when the flow rate of the liquid refrigerant medium needs to be 10g/s-20g/s, when the pressure of the liquid refrigerant medium is 2.6 plus or minus 0.15MPa, the pressure difference between the pressure flowing out of the expansion valve to be tested and the pressure difference flowing into the expansion valve to be tested is 2.2 plus or minus 0.15MPa, the supercooling needs to reach 5 plus or minus 1 ℃, and when the pressure of the liquid refrigerant medium is 1 plus or minus 0.1MPa, the pressure difference between the pressure flowing out of the expansion valve to be tested and the pressure difference flowing into the expansion valve to be tested is 0.7 plus or minus 0.1MPa, and the supercooling needs to reach 5 plus or minus 1 ℃, the minimum valve opening pulse test and the flow curve test can be carried out), two groups of third pressure sensors 74 are respectively positioned at two ends of a third station to be tested 73, a third stop valve 75 is arranged on a third test branch 72 at the front side of the third station to be tested, a third flow meter 76 is also arranged on the third test branch 72, an electronic expansion valve 77 and a third temperature sensor 78 are also arranged on the third main test pipe 71, the electronic expansion valve 77 is used for atomizing the liquid refrigerant medium into, the flow relation between the third main test path 71 and the third test branch 72 can be adjusted by matching with the third flow meter 76, so that the system runs smoothly, and the third test branch 72 is further provided with a liquid observation mirror 79 for observing the conditions in the pipeline of the third test branch 72.

The evaporator 8 serves to convert the atomized small liquid refrigerant medium into a gaseous refrigerant medium.

The fourth test fixture area 9 includes a fourth test main path 91, a fourth test branch path 92, a fourth station to be tested 93, a third differential pressure sensor 94 and two sets of fourth pressure sensors 95, the fourth test branch path 92 is connected in parallel to the fourth test main path 91, the fourth station to be tested 93 is connected to the fourth branch path to be tested, a check valve to be tested is placed on the fourth station to be tested 93 (the third test fixture area 7 mainly has test functions including pressure loss test and noise test, the pressure loss test requires a precondition that the flow rate of gaseous refrigerant medium is required to be 112g/s, the inlet pressure of the check valve to be tested is required to be 300 +/-50 KPa, gas phase), the two sets of fourth pressure sensors 95 are respectively located at two ends of the fourth station to be tested 93, the third differential pressure sensors 94 are connected with the two sets of fourth pressure sensors 95, a fourth stop valve 96 is arranged on the fourth test branch path 92 at the front side of the fourth station to be tested 93, the fourth test branch 92 is further provided with a fourth flowmeter 97, the fourth test main path 91 is provided with a third regulating valve 98 and a fourth temperature sensor 99, the fourth flowmeter 97 and the third regulating valve 98 are used for ensuring that the whole system operates stably, when gaseous refrigerant media flow to the fourth test branch 92 and the fourth test main path 91 simultaneously, the flow on the fourth test branch 92 is detected according to the fourth flowmeter 97 so as to regulate the third regulating valve 98, the flow of the fourth test main path 91 is controlled, the total flow of the fourth test branch 92 and the fourth test main path 91 is constant, and the whole system can operate normally and stably all the time.

In summary, in the conventional detection system, it is laborious to adjust the flow relationship between the branch line and the main path when detecting refrigerant valves with different sizes and different flows, and it takes longer to debug the flow when detecting refrigerant valves with other flows, so the present invention has the greatest advantages of more convenient debugging of the flow, the pressure and the temperature, and saving the debugging time.

Because the gaseous cold coal medium is exothermic when being condensed in the condenser 4, the condensate in the condenser 4 can raise the temperature, in order to cool the condensate, the invention further comprises a condensed water cooling area 10, the condensed water cooling area 10 comprises a water-water heat exchanger 101 and a water circulation constant temperature box 12 (the water-water heat exchanger 101 and the water circulation constant temperature box 12 in the condensed water cooling area 10 belong to dual cooling, the upper end of the water-water heat exchanger 101 is connected with a cooling water inlet pipe, the lower end of the water-water heat exchanger 101 is connected with a cooling water outlet pipe, the cooling water inlet pipe is provided with an electric ball valve, the cooling water outlet pipe is provided with a full-diameter ball valve), a first pipeline 102 is arranged between the condenser 4 and the water-water heat exchanger 101, the first pipeline 102 is provided with a fifth temperature sensor 105 and a ball valve (the fifth temperature sensor 105 is used for detecting the temperature of the condensate in the first pipeline 102), a second pipeline 103 is arranged between the, a sixth temperature sensor 106 and a first check valve 107 are arranged on the second pipeline 103 (the sixth temperature sensor 106 is used for detecting the temperature of the condensate in the second pipeline 103 after the condensate is cooled for the first step, the first check valve 107 is used for preventing the condensate in the second pipeline 103 from flowing back to the water-water heat exchanger 101), a third pipeline 104 is arranged between the water circulation constant temperature box 12 and the condenser 4, a first filter 108, a condensate water pump 109 and a condensate water flowmeter 110 are arranged on the third pipeline 104, silicon oil is also arranged in the water circulation constant temperature box 12 and is used as a constant temperature medium for cooling the silicon oil through water circulation, the first filter 108 is used for filtering impurities in the cooling liquid, the condensate water pump 109 is used as a power source for pumping the cooling liquid in the water circulation constant temperature box 12, the second pipeline 103, the water-water heat exchanger 101 and the first pipeline 102 to the third pipeline 104 and flowing into the condenser 4, the condensate flow meter 110 is used to measure the flow of condensate in the third pipe 104.

Because the evaporator 8 is the most important component in the refrigeration system, the atomized refrigerant medium absorbs heat to the gaseous refrigerant medium after passing through the evaporator 8, the evaporator 8 cools, the fan blows air to the evaporator 8, and in order to adjust the temperature of the evaporator 8 to make the blown temperature suitable for the working condition, the invention also comprises an evaporation temperature adjusting area 11, the evaporation temperature adjusting area 11 comprises a fourth pipeline 111 and a fifth pipeline 112, one end of the fourth pipeline 111 is connected with the evaporator 8, the other end is connected with the water circulation constant temperature box 12, one end of the fifth pipeline 112 is connected with the water circulation constant temperature box 12, the other end is connected with the evaporator 8, the fourth pipeline 111 is provided with a seventh temperature sensor 113 and a second one-way valve 114 (the seventh temperature sensor 113 is used for detecting the temperature of the water flowing out of the evaporator 8 in the fourth pipeline 111, the second one-way valve 114 is used for preventing the water in the fourth pipeline 111 from flowing back to the evaporator 8), the fifth pipeline 112 is provided with a second filter 115, an evaporation water pump 116 and an evaporation water flow meter 117, the second filter 115 is used for removing impurities in the circulating water, the evaporation water pump 116 is used as a power source, and the evaporation temperature adjusting zone 11 is used for adjusting the working condition of the evaporator 8, so that the pressure and the temperature can be adjusted.

The compressor unit 1 comprises a compressor body 1011, a pressure controller 1021, an exhaust temperature protector 1031 and an oil separator 1041, wherein the pressure controller 1021 and the exhaust temperature protector 1031 are both connected to the compressor body 1011, an oil stain return pipe is arranged between the oil separator 1041 and the compressor body 1011, the pressure controller 1021 and the exhaust temperature protector 1031 are used for protecting the compressor body 1011, and a large amount of lubricating oil is filled in the compressor body 1011, so that the compressor body 1011 can easily discharge the lubricating oil and a cooling medium to the gas temperature controller 2 simultaneously in the compression process, the oil separator 1041 is used for filtering the lubricating oil in the cooling medium, and then discharging the filtered lubricating oil to the compressor body 1011.

A liquid storage device 13 and a drying filter 14 are arranged between the supercooling thermostat 5 and the second testing tool area 6, the liquid storage device 13 is used for collecting liquid refrigerant media after the supercooling thermostat 5 is supercooled, and the drying filter 14 is used for filtering impurities flowing from the liquid storage device 13 to the liquid refrigerant media in the second testing tool area 6.

Because the electronic expansion valve 77 can be tested on the first station to be tested 33, and the caliber of the electronic expansion valve is different from that of the testing electromagnetic valve, the testing branch circuit 15 is also arranged on the first testing branch circuit 32, the testing branch circuit 15 is connected on the first testing branch circuit 32 in parallel, the electromagnetic valve and the branch circuit flowmeter are respectively arranged on the first testing branch circuit 32 and the testing branch circuit 15, when the electronic expansion valve is tested on the first station to be tested 33, the MOPD test, the MOPV test, the minimum open valve pulse test, the flow curve test, the pressure loss test and the noise test are specifically carried out, the MOPD test has the precondition that the flow rate of the liquid refrigerant medium needs to reach 240g/s, the pressure intensity of the liquid refrigerant medium needs to reach 2.9MPa +/-0.15 MPa, the precondition of the MOPV test is that the flow rate of the liquid refrigerant medium needs to reach 240g/s, the pressure intensity of the liquid refrigerant medium needs to reach 2.9MPa +/-0.15 MPa, and the minimum open valve pulse test has the flow rate of the liquid refrigerant needs, the required temperature is 95 +/-5 ℃, the inlet pressure flowing into the expansion valve to be tested is 2.6 +/-0.15 MPa, the pressure difference between the pressure flowing out of the expansion valve to be tested and the pressure flowing into the expansion valve to be tested is 25 +/-10 KPa, the requirements before the flow curve test are that the temperature of the liquid refrigerant medium is 95 +/-5 ℃, the inlet pressure flowing into the expansion valve to be tested is 2.6 +/-0.15 MPa, and the pressure difference between the pressure flowing out of the expansion valve to be tested and the pressure flowing into the expansion valve to be tested is 25 +/-10 KPa; the precondition of the pressure loss test is that the flow rate of the liquid refrigerant medium needs to reach 60g/s, the required temperature is 95 +/-5 ℃, and the inlet pressure of the liquid refrigerant medium flowing into the expansion valve to be tested needs to reach 2.6 +/-0.15 MPa.

The first test branch 32 is provided with a first vacuum joint 16, the first vacuum joint 16 is positioned on the first test branch 32 after the cold medium flows through the first test station, the second test branch 62 is provided with a second vacuum joint 17, the second vacuum joint 17 is positioned on the second test branch 62 after the cold medium flows through the second test station, the third test branch 72 is provided with a third vacuum joint 18, the third vacuum joint 18 is positioned on the third test branch 72 after the cold medium flows through the third test station, the fourth test branch 92 is provided with a fourth vacuum joint 19, the fourth vacuum joint 19 is positioned on the fourth test branch 92 after the cold medium flows through the fourth test station, each vacuum joint is externally connected with a vacuum pump and outdoors, and the aim is to evacuate the cold medium at the corresponding position so as to facilitate subsequent tests.

A refrigerant joint 20 and a fifth vacuum joint 21 are arranged between the fourth test tooling area 9 and the compressor unit 1, and the refrigerant joint 20 is used for supplementing a refrigerant medium of the compressor unit 1.

An eighth temperature sensor 22 and a fifth pressure sensor 23 are arranged between the first test tool area 3 and the condenser 4, a ninth temperature sensor 24 and a sixth pressure sensor 25 are arranged between the condenser 4 and the supercooling thermostatic bath, and the different temperature sensors at the different positions are used for monitoring the temperature of the corresponding position.

The system flow comprises the following steps: firstly, refrigerant medium is introduced into a compressor unit 1 through a refrigerant joint 20, the compressor unit 1 compresses the refrigerant medium to a gaseous state, then the refrigerant medium is introduced into a gas temperature controller 2 for temperature regulation, the gaseous refrigerant medium with the regulated temperature and pressure is introduced into a first test tool area 3 for detecting an electromagnetic valve or an expansion valve, the gaseous refrigerant medium passes through a first test tool and then enters a condenser 4 for condensation to form liquid refrigerant medium, a small amount of gaseous refrigerant medium is completely converted into the liquid refrigerant medium after passing through a supercooling thermostat 5, finally the liquid refrigerant medium flows into a liquid reservoir 13, the liquid refrigerant medium in the liquid reservoir 13 passes through a drying filter 14 for filtering impurities, the refrigerant medium is regulated in pressure and flow rate and then flows into a second test tool area 6 for testing a one-way valve, and the liquid refrigerant medium tested in the second test tool area 6 is regulated in pressure and flow rate, The liquid refrigerant medium tested in the third test tool area 7 is atomized into a small water droplet shape after passing through the expansion valve and flows into the evaporator 8 to be evaporated, the evaporator 8 is cooled, the evaporated gaseous refrigerant medium adjusts the pressure, the flow rate and the temperature and then flows into the fourth test assembly area to test the check valve, and finally flows back to the compressor unit 1 to be compressed again.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (10)

1. A refrigerant valve performance test system is characterized in that: the device comprises a compressor unit (1), a gas temperature controller (2), a first test tool area (3), a condenser (4), a supercooling thermostat (5), a second test tool area (6), a third test tool area (7), an evaporator (8) and a fourth test tool area (9), wherein the compressor unit (1) is used for compressing refrigerant medium into gaseous refrigerant medium, the gaseous refrigerant medium sequentially passes through the gas temperature controller (2), the first test tool area (3), the condenser (4), the supercooling thermostat (5), the second test tool area (6), the third test tool area (7), the evaporator (8), the fourth test tool area (9) and the compressor unit (1) through a connecting pipeline, and the first test tool area (3) comprises a first main test path (31), a first test branch path (32), a first station (33) to be tested, The pressure measurement device comprises a first differential pressure sensor (34) and two groups of first pressure sensors (35), wherein the first test branch (32) is connected to a first main test path (31) in parallel, a first station (33) to be tested is connected to the first test branch (32), a solenoid valve to be tested is placed on the first station (33) to be tested, the two groups of first pressure sensors (35) are respectively located at two ends of the first station (33) to be tested, the first differential pressure sensor (34) is connected with the two groups of first pressure sensors (35), a first stop valve (36) is arranged on the first test branch (32) at the front side of the first station (33) to be tested, a first flowmeter (37) is further arranged on the first test branch (32), and a first regulating valve (38) and a first temperature sensor (39) are arranged on the first main test path (31);

the condenser (4) is used for condensing gaseous refrigerant media to liquid refrigerant media, the supercooling thermostat (5) comprises a box body (51), a water cooling assembly and a supercooling pipe (52), the water cooling assembly and the supercooling pipe are located in the box body (51), constant temperature materials are filled in the box body (51), one end of the supercooling pipe (52) is connected with the first main testing path (31), the other end of the supercooling pipe is connected with the second main testing path (61), and the water cooling assembly is wound on the supercooling pipe (52);

the second test tool area (6) comprises a second test main path (61), a second test branch path (62), a second station to be tested (63), a second differential pressure sensor (64) and two groups of second pressure sensors (65), the second test branch path (62) is connected to the second test main path (61) in parallel, the second station to be tested (63) is connected to the second branch path to be tested, a check valve to be tested is placed on the second station to be tested (63), the two groups of second pressure sensors (65) are respectively located at two ends of the second station to be tested (63), the second differential pressure sensor (64) is connected with the two groups of second pressure sensors (65), a second stop valve (66) is arranged on the second test branch path (62) at the front side of the second station to be tested (63), and a second flowmeter (67) is further arranged on the second test branch path (62), a second regulating valve (68) and a second temperature sensor (69) are arranged on the second main testing path (61);

the third test tool area (7) comprises a third main test path (71), a third test branch path (72), a third station to be tested (73) and two groups of third pressure sensors (74), the third test branch (72) is connected in parallel to the third main test path (71), the third station to be tested (73) is connected to a third branch to be tested, the expansion valve to be tested is placed on the third station to be tested (73), the two groups of third pressure sensors (74) are respectively positioned at two ends of the third station to be tested (73), a third stop valve (75) is arranged on a third test branch (72) at the front side of the third station to be tested (73), a third flowmeter (76) is further arranged on the third testing branch (72), an electronic expansion valve (77) and a third temperature sensor (78) are further arranged on the third testing main path (71), the electronic expansion valve (77) is used for atomizing the liquid cold medium into small liquid drops;

the evaporator (8) is used for converting atomized small liquid refrigerant medium into gaseous refrigerant medium;

the fourth test tool area (9) comprises a fourth test main path (91), a fourth test branch path (92), a fourth station to be tested (93), a third differential pressure sensor (94) and two groups of fourth pressure sensors (95), the fourth test branch path (92) is connected to the fourth test main path (91) in parallel, the fourth station to be tested (93) is connected to the fourth branch path to be tested, a check valve to be tested is placed on the fourth station to be tested (93), the two groups of fourth pressure sensors (95) are respectively located at two ends of the fourth station to be tested (93), the third differential pressure sensor (94) is connected with the two groups of fourth pressure sensors (95), a fourth stop valve (96) is arranged on the fourth test branch path (92) at the front side of the fourth station to be tested (93), and a fourth flow meter (97) is further arranged on the fourth test branch path (92), and a third regulating valve (98) and a fourth temperature sensor (99) are arranged on the fourth main testing path (91).

2. The system for testing the performance of the refrigerant valve as claimed in claim 1, wherein: still including comdenstion water cooling district (10), including water heat exchanger (101) and water circulation thermostated container (12) in comdenstion water cooling district (10), be equipped with first pipeline (102) between condenser (4) and water heat exchanger (101), be equipped with second pipeline (103) between water heat exchanger (101) and water circulation thermostated container (12), be equipped with third pipeline (104) between water circulation thermostated container (12) and condenser (4), be equipped with fifth temperature sensor (105) and ball valve on first pipeline (102), be equipped with sixth temperature sensor (106) and first check valve (107) on second pipeline (103), be equipped with first filter (108), condensate pump (109) and condensate flowmeter (110) on third pipeline (104).

3. The system for testing the performance of a refrigerant valve as claimed in claim 2, wherein: still including evaporation temperature adjusting area (11), including fourth pipeline (111) and fifth pipeline (112) in evaporation temperature adjusting area (11), fourth pipeline (111) one end is connected with evaporimeter (8), and the other end is connected with hydrologic cycle thermostated container (12), fifth pipeline (112) one end is connected with hydrologic cycle thermostated container (12), and the other end is connected with evaporimeter (8), be equipped with seventh temperature sensor (113) and second check valve (114) on fourth pipeline (111), be equipped with second filter (115), evaporating water pump (116) and evaporating water flowmeter (117) on fifth pipeline (112).

4. The system for testing the performance of the refrigerant valve as claimed in claim 1, wherein: the compressor unit (1) comprises a compressor body (1011), a pressure controller (1021), an exhaust temperature protector (1031) and an oil separator (1041), wherein the pressure controller (1021) and the exhaust temperature protector (1031) are both connected to the compressor body (1011), and an oil stain return pipe is arranged between the oil separator (1041) and the compressor body (1011).

5. The system for testing the performance of the refrigerant valve as claimed in claim 1, wherein: be equipped with reservoir (13) and drier-filter (14) between subcooling thermostated container (5) and second test fixture district (6), reservoir (13) are used for collecting the liquid refrigerant medium after subcooling thermostated container (5), drier-filter (14) are arranged in filtering and are flowed to the impurity in the liquid refrigerant medium in second test fixture district (6) by reservoir (13).

6. The system for testing the performance of the refrigerant valve as claimed in claim 1, wherein: still be equipped with test branch road (15) on first test branch road (32), test branch road (15) parallel connection is on first test branch road (32), be equipped with solenoid valve and branch road flowmeter on first test branch road (32) and the test branch road (15) respectively.

7. The system for testing the performance of the refrigerant valve as claimed in claim 1, wherein: the water cooling assembly comprises a water cooling pipe (53), a cold water tank (54) and two sets of external pipes (55), the water cooling pipe (53) is wound on an outer ring of the supercooling pipe (52), a water inlet is formed in a side wall of the upper end of the box body (51), a water outlet is formed in a side wall of the lower end of the box body (51), two ends of the water cooling pipe (53) penetrate through the water inlet and the water outlet respectively to be connected with the two sets of external pipes (55) and communicated with each other, the external pipes (55) are connected to the cold water tank (54) and communicated with each other, and a pressure pump (56) is further arranged on the external pipe (55) connected with the water cooling pipe (53) penetrating out.

8. The system for testing the performance of the refrigerant valve as claimed in claim 1, wherein: the testing device is characterized in that a first vacuum joint (16) is arranged on the first testing branch (32), the first vacuum joint (16) is located on the first testing branch (32) after the cold medium flows through the first testing station, a second vacuum joint (17) is arranged on the second testing branch (62), the second vacuum joint (17) is located on the second testing branch (62) after the cold medium flows through the second testing station, a third vacuum joint (18) is arranged on the third testing branch (72), the third vacuum joint (18) is located on the third testing branch (72) after the cold medium flows through the third testing station, fourth vacuum joints (19) are arranged on the fourth testing branch (92), and the fourth vacuum joint (19) is located on the fourth testing branch (92) after the cold medium flows through the fourth testing station.

9. The system for testing the performance of the refrigerant valve as claimed in claim 1, wherein: and a refrigerant joint (20) and a fifth vacuum joint (21) are arranged between the fourth test tool area (9) and the compressor unit (1).

10. The system for testing the performance of the refrigerant valve as claimed in claim 1, wherein: be equipped with eighth temperature sensor (22) and fifth pressure sensor (23) between first test fixture district (3) and condenser (4), be equipped with ninth temperature sensor (24) and sixth pressure sensor (25) between condenser (4) and the subcooling thermostatic bath.

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