Two-phase closed thermosiphon performance test platform

Abstract

The utility model relates to a two-phase closed thermosiphon performance test platform, and effectively solves the problems that when a heat exchanger is directly used for an experiment, the overall occupied space is large, each structure is inconvenient to quickly adjust according to the test condition, the experiment time is long, and the operation is tedious and complicated. According to the two-phase closed thermosiphon performance test platform, the content of a filled refrigerant can be adjusted, a liquid storage device structure can be selectively additionally arranged, the height of the liquid storage device structure can be adjusted through a first adjusting mechanism, a gas-liquid separation structure can be selectively additionally arranged, and meanwhile the height difference between a condensation structure and an evaporation structure can be adjusted through a second adjusting mechanism; the test platform has the advantages that the overall occupied space is small, the experiment cost is reduced, the adjustment operation is convenient, the experiment time is shortened, and the test efficiency is improved. And meanwhile, an experimenter can quickly and accurately know the influence on the performance of the thermosiphon under different conditions.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat pipe test platforms, and particularly relates to a performance test platform for a two-phase closed heat pipe. Background Art

[0002] The gravity type separated heat pipe, abbreviated as gravity heat pipe, loop heat pipe or heat siphon, discharges heat from indoors to outdoors through the natural phase change flow of the refrigeration working medium, and realizes gas-liquid circulation in the pipeline through the pressure difference and gravity backflow, without external power, and the operation energy consumption is lower than that of the mechanical refrigeration system. In order to fully understand and know the gravity type separated heat pipe, and to realize the better application of the gravity type separated heat pipe backplane and the gravity heat pipe composite air conditioner in the industry and even across industries, it is necessary to analyze the gravity type separated heat pipe and summarize the factors affecting the performance of the gravity type separated heat pipe, mainly including the refrigerant filling amount, the height difference of the heat exchanger, the accumulator, the gas-liquid separator, etc., and analyze its engineering application value.

[0003] However, if the heat exchanger is directly used for experiments, it has the disadvantages of high equipment investment cost, high operation cost, long experiment time, etc. The overall occupied space is large and it is not convenient to quickly adjust each structure according to the test situation. It is greatly affected by external environmental factors, and the operation is cumbersome and complex, which is not convenient for the operator to use when testing the performance of the two-phase closed heat pipe. Summary of the Utility Model

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a performance test platform for a two-phase closed heat pipe. The performance test platform for the two-phase closed heat pipe has a small overall occupied space, reduces the experimental cost, is convenient for adjustment and operation, can quickly adjust each structure, shortens the experimental time, and at the same time enables the experimenter to quickly and accurately understand the influence on the performance of the heat pipe under different conditions.

[0005] A two-phase closed thermosyphon performance test platform, including a heat insulation chamber that can isolate the external environmental temperature. At the top of the inner side wall of the heat insulation chamber, there is a condensation structure that can absorb heat, and at the outlet end of the condensation structure, there is a heat pipe structure that can be connected to it. On one side of the outside of the heat pipe structure near the outlet end of the condensation structure, there is a liquid storage structure that can be connected to the heat pipe structure. Outside the liquid storage structure, there is a first adjustment mechanism that can adjust its height. On the outside of the bottom of the heat pipe structure, on the side away from the liquid storage structure, there is an evaporation structure that can dissipate heat. Outside the evaporation structure, there is a second adjustment mechanism that can adjust its height. One end of the heat pipe structure away from the outlet end of the condensation structure is connected to the inlet end of the condensation structure. On one side of the outside of the heat pipe structure near the inlet end of the condensation structure, there is a gas-liquid separation structure that can be connected to the heat pipe structure. In the middle of the inner top wall, inner bottom wall and inner side wall of the heat insulation chamber, there are heating lamps fixedly installed that can heat the environmental temperature inside the heat insulation chamber. On the outside of the heat pipe structure and the inner surface of the heat insulation chamber, there are thermocouple sensors that can measure the temperature inside the heat pipe structure and the environmental temperature inside the heat insulation chamber.

[0006] Preferably, the condensation structure includes a condenser, a mounting frame, an injection pipe and a first solenoid valve. The mounting frame is fixedly connected to the back of the condenser and fixedly installed at the top of the inner side wall of the heat insulation chamber. The injection pipe is fixedly connected to the outlet end of the condenser and is internally connected to it. The first solenoid valve is fixedly installed at the junction of the part inside the injection pipe that is connected to the outlet end of the condenser and can control the on-off of the injection pipe. Thermocouple sensors are fixedly installed outside the outlet end and the inlet end of the condenser.

[0007] Preferably, the heat pipe structure includes a thermosyphon, a second solenoid valve, a third solenoid valve, a fourth solenoid valve and a fifth solenoid valve. The two ends of the thermosyphon are respectively connected to the outlet end and the inlet end of the condenser. The top of the thermosyphon near the outlet end of the condenser is set as a spiral structure. The second solenoid valve is fixedly installed below the connection between the thermosyphon and the inlet end of the liquid storage structure. The third solenoid valve is fixedly installed above the connection between the thermosyphon and the outlet end of the liquid storage structure. The fourth solenoid valve is fixedly installed above the connection between the thermosyphon and the inlet end of the gas-liquid separation structure. The fifth solenoid valve is fixedly installed on the side away from the condenser at the connection between the thermosyphon and the outlet end of the gas-liquid separation structure.

[0008] Preferably, the liquid storage structure includes a liquid storage container, an upper connecting pipe, a lower connecting pipe, a sixth solenoid valve, and a seventh solenoid valve. One end of the upper connecting pipe is connected to the thermosyphon, and the other end passes through the center of the upper surface of the liquid storage container. One end of the lower connecting pipe is connected to the thermosyphon, and the other end passes through the center of the lower surface of the liquid storage container. The connection points of the upper connecting pipe and the lower connecting pipe with the thermosyphon are respectively located above the second solenoid valve and below the third solenoid valve. Both the upper connecting pipe and the lower connecting pipe are connected to the interior of the liquid storage container. The sixth solenoid valve is fixedly installed at one end of the upper connecting pipe close to the thermosyphon, and the seventh solenoid valve is fixedly installed at one end of the lower connecting pipe close to the thermosyphon.

[0009] Preferably, the first adjustment mechanism includes a first cylinder and an arc-shaped fixing frame. The arc-shaped fixing frame is fixedly connected to the movable rod body of the first cylinder and is clamped to the middle of the outer surface of the liquid storage container by bolts. The first cylinder is fixedly connected to the bottom of the inner side of the heat insulation chamber close to the liquid storage container.

[0010] Preferably, the evaporation structure includes a heat conduction pad, a heating block, a heating rod, and a heat preservation sleeve. The heat conduction pad is sleeved at the bent part of the bottom end of the thermosyphon away from the liquid storage structure. The heating block is fixedly connected to the inside of the heat conduction pad, and the heat preservation sleeve is sleeved outside the heat conduction pad and the heating block. Both ends of the heat preservation sleeve are inserted with heating rods arranged in an annular array, and several heating rods are inserted into the inside of the heating block.

[0011] Preferably, the second adjustment mechanism includes a second cylinder and a clamping ring. The clamping ring is fixedly connected to the movable rod body of the second cylinder and is sleeved outside the heat preservation sleeve. A bolt for adjusting its clamping degree is threadedly inserted through the opening of the clamping ring. The second cylinder is fixedly installed on the side of the inner part of the heat insulation chamber away from the first cylinder.

[0012] Preferably, the gas-liquid separation structure includes a gas-liquid separator, an inlet pipeline, an outlet pipeline, an eighth solenoid valve, and a ninth solenoid valve. Both ends of the inlet pipeline are respectively connected to the inside of the thermosyphon and the gas-liquid separator. Both ends of the outlet pipeline are respectively connected to the inside of the thermosyphon near the inlet end of the condenser and the gas-liquid separator. The eighth solenoid valve is fixedly installed at one end of the inlet pipeline close to the thermosyphon, and the ninth solenoid valve is fixedly installed at one end of the outlet pipeline close to the thermosyphon.

[0013] Preferably, a plurality of thermocouple sensors for measuring the temperature inside are equidistantly arranged outside the thermosyphon. Thermocouple sensors are arranged outside both the inlet pipeline and the outlet pipeline of the gas-liquid separator. Thermocouple sensors for measuring the temperature inside are fixedly installed at both ends of the inner side wall of the heat insulation chamber.

[0014] Preferably, the heat insulation bin includes a bin body, a bin door and a heat insulation layer. The interiors of the bin body and the bin door are both filled with a heat insulation layer. The bin door is hinged to the front of the bin body. A magnetic strip is fixedly connected to one side of the bin door that can be fitted to the front of the bin body. An iron strip that can be magnetically attracted to the magnetic strip is fixedly connected to the corresponding part of the front of the bin body. The bin door can be tightly attached to the front of the bin body through the magnetic strip and the iron strip to seal its interior.

[0015] The beneficial effects of the above technical solutions are as follows:

[0016] (1) Through the settings of the condensation structure, the heat pipe structure, the liquid reservoir structure, the evaporation structure and the gas-liquid separation structure, the performance test platform for the two-phase closed thermosyphon can fully simulate all the influencing factors related to the gravity-type separated heat pipe in reality. The content of the refrigerant filled into the heat pipe structure can be adjusted. The liquid reservoir structure can be selectively added and the height of the liquid reservoir structure can be adjusted through the first adjustment mechanism. The gas-liquid separation structure can be selectively added. At the same time, the height difference between the condensation structure and the evaporation structure can be adjusted through the second adjustment mechanism, so as to test whether the refrigerant filling amount, the height difference of the heat exchanger, the liquid reservoir and the gas-liquid separator can improve the performance of the thermosyphon. The overall occupied space of this test platform is small, the experimental cost is reduced, the adjustment operation is convenient, each structure can be quickly adjusted, the experimental time is shortened, and at the same time, the experimenters can quickly and accurately understand the influence of different situations on the performance of the thermosyphon;

[0017] (2) Through the settings of the heat insulation bin, the heating lamp and the thermocouple sensor, the heat insulation bin can enable the overall test platform to operate in a stable environment and avoid being affected by external environmental factors. The heating lamp can control the temperature inside the heat insulation bin, which is convenient for adjusting the environmental temperature to cope with different tests. The thermocouple sensor can detect the environmental temperature inside the heat insulation bin and the temperatures of various parts in the overall circulation system in real time, so as to know the current test effect according to the detected temperatures of various parts, which is convenient for the test personnel to accurately understand the influence of various factors on the performance of the thermosyphon. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of the three-dimensional state of the present invention;

[0020] Figure 3 is a schematic diagram of the sectional state of the heat insulation bin of the present invention;

[0021] Figure 4 is a schematic diagram of the internal structure of the heat insulation bin of the present invention;

[0022] Figure 5Schematic diagram of the split state of the first adjustment mechanism and the second adjustment mechanism of the present utility model;

[0023] Figure 6 Schematic diagram of the split evaporation structure of the present utility model.

[0024] In the figure: 1, heat insulation chamber; 2, heating lamp; 3, thermocouple sensor; 4, condenser; 5, mounting bracket; 6, injection pipe; 7, first solenoid valve; 8, thermosyphon; 9, second solenoid valve; 10, third solenoid valve; 11, fourth solenoid valve; 12, fifth solenoid valve; 13, liquid storage tank; 14, upper connecting pipe; 15, lower connecting pipe; 16, sixth solenoid valve; 17, seventh solenoid valve; 18, first cylinder; 19, arc-shaped fixing bracket; 20, heat conduction pad; 21, heating block; 22, heating rod; 23, heat preservation sleeve; 24, second cylinder; 25, clamping ring; 26, gas-liquid separator; 27, inlet pipeline; 28, outlet pipeline; 29, eighth solenoid valve; 30, ninth solenoid valve; 101, chamber body; 102, chamber door; 103, heat insulation layer; 104, magnetic strip; 105, iron strip. Specific embodiments

[0025] Regarding the foregoing and other technical contents, features and effects of the present utility model, the following will be described in detail in conjunction with the attached Figures 1 to 6 Examples are described in detail.

[0026] This embodiment provides a two-phase closed thermosyphon performance test platform. As shown in the attached Figures 1-6 figure, it includes a heat insulation chamber 1 that can isolate the external environmental temperature. The heat insulation chamber 1 includes a chamber body 101, a chamber door 102 and a heat insulation layer 103. The inside of both the chamber body 101 and the chamber door 102 is filled with a heat insulation layer 103. The chamber door 102 is hinged to the front of the chamber body 101, which is convenient for opening the chamber door 102 to adjust each structure inside the chamber body 101. A magnetic strip 104 is fixedly connected to one side of the chamber door 102 that can fit with the front of the chamber body 101. A iron strip 105 that can be magnetically attracted to the magnetic strip 104 is fixedly connected to the corresponding part of the front of the chamber body 101. The chamber door 102 can be tightly attached to the front of the chamber body 101 through the magnetic strip 104 and the iron strip 105 and seal its interior. When the chamber door 102 is closed, the heat insulation layer 103 can play a role in heat preservation and insulation for the entire heat insulation chamber 1, isolate the internal environment of the chamber body 101 from the outside, thereby avoiding the influence of external factors on the test structure inside the heat insulation chamber 1 and improving the accuracy of the test;

[0027] At the top of the inner wall of the heat insulation chamber 1, a condensation structure capable of absorbing heat is provided. The condensation structure includes a condenser 4, a mounting bracket 5, an injection pipe 6, and a first solenoid valve 7. The mounting bracket 5 is fixedly connected to the back of the condenser 4 and fixedly installed at the top of the inner wall of the heat insulation chamber 1. The injection pipe 6 is fixedly connected to the outlet end of the condenser 4 and is in communication with its interior. The first solenoid valve 7 is fixedly installed at the junction of the part inside the injection pipe 6 communicating with the outlet end of the condenser 4 and can control the on-off of the injection pipe 6. The tester can fill the refrigerant into the circulation pipeline through the injection pipe 6. Ensure that the first solenoid valve 7, the sixth solenoid valve 16, the seventh solenoid valve 17, the eighth solenoid valve 29, and the ninth solenoid valve 30 are all in the closed state, and the second solenoid valve 9, the third solenoid valve 10, the fourth solenoid valve 11, and the fifth solenoid valve 12 are all in the open state. At this time, the refrigerant only circulates in the thermosyphon 8, the evaporation structure, and the condensation structure. After adjusting other influencing factors to appropriate states, the refrigeration performance of the entire circulation pipeline can be observed by adjusting the refrigerant filling amount, so as to test the influence of the refrigerant filling amount on the performance of the two-phase closed thermosyphon; Thermocouple sensors 3 are fixedly installed outside the outlet end and the inlet end of the condenser 4, which is convenient for real-time detection of the temperatures inside the outlet end and the inlet end of the condenser 4 under different conditions;

[0028] At the outlet end of the condensation structure, a heat pipe structure that can communicate with it is provided. The heat pipe structure includes a thermosyphon 8, a second solenoid valve 9, a third solenoid valve 10, a fourth solenoid valve 11, and a fifth solenoid valve 12. The two ends of the thermosyphon 8 are respectively communicated with the outlet end and the inlet end of the condenser 4. The top of the thermosyphon 8 near the outlet end of the condenser 4 is set as a spiral structure, which can facilitate the movable liquid storage structure, ensure that the liquid storage structure can move up and down without affecting the thermosyphon 8. The second solenoid valve 9 is fixedly installed below the connection between the thermosyphon 8 and the inlet end of the liquid storage structure. The third solenoid valve 10 is fixedly installed above the connection between the thermosyphon 8 and the outlet end of the liquid storage structure. The fourth solenoid valve 11 is fixedly installed above the connection between the thermosyphon 8 and the inlet end of the gas-liquid separation structure. The fifth solenoid valve 12 is fixedly installed on the side of the thermosyphon 8 away from the condenser 4 at the connection with the outlet end of the gas-liquid separation structure;

[0029] On one side of the outside of the heat pipe structure near the outlet end of the condensation structure, there is a liquid storage structure that can communicate with the heat pipe structure. The liquid storage structure includes a liquid storage tank 13, an upper connecting pipe 14, a lower connecting pipe 15, a sixth solenoid valve 16, and a seventh solenoid valve 17. One end of the upper connecting pipe 14 is connected to the thermosyphon 8, and the other end passes through the center of the upper surface of the liquid storage tank 13. One end of the lower connecting pipe 15 is connected to the thermosyphon 8, and the other end passes through the center of the lower surface of the liquid storage tank 13. The connection points of the upper connecting pipe 14 and the lower connecting pipe 15 with the thermosyphon 8 are respectively arranged above the second solenoid valve 9 and below the third solenoid valve 10. Both the upper connecting pipe 14 and the lower connecting pipe 15 are internally connected to the liquid storage tank 13. The sixth solenoid valve 16 is fixedly installed at one end of the upper connecting pipe 14 close to the thermosyphon 8, and the seventh solenoid valve 17 is fixedly installed at one end of the lower connecting pipe 15 close to the thermosyphon 8. An adjustable first adjusting mechanism is arranged outside the liquid storage structure. The first adjusting mechanism includes a first cylinder 18 and an arc-shaped fixing frame 19. The arc-shaped fixing frame 19 is fixedly connected to the moving rod body of the first cylinder 18 and is clamped to the middle of the outer surface of the liquid storage tank 13 by bolts. The first cylinder 18 is fixedly connected to the bottom of the inner side of the heat insulation chamber 1 close to the liquid storage tank 13. By controlling the expansion and contraction of the moving end of the first cylinder 18, the height of the liquid storage tank 13 can be adjusted.

[0030] The liquid storage tank 13 is connected in parallel to one side of the thermosyphon 8 near the outlet end of the condenser 4 through the upper connecting pipe 14 and the lower connecting pipe 15. The tester can control the refrigerant filling amount of the system and the height difference of the heat exchanger to be in a suitable state. Close the first solenoid valve 7, the second solenoid valve 9, the third solenoid valve 10, the eighth solenoid valve 29, and the ninth solenoid valve 30, and open the sixth solenoid valve 16, the seventh solenoid valve 17, the fourth solenoid valve 11, and the fifth solenoid valve 12, so that the refrigerant can flow through the liquid storage tank 13. Therefore, the liquid column height in the thermosyphon 8 depends on the height of the liquid storage tank 13. The tester can control the height of the liquid storage tank 13 by controlling the expansion and contraction of the moving end of the first cylinder 18, so as to facilitate testing the influence of the liquid storage structure and its installation height on the performance of the two-phase closed thermosyphon.

[0031] An evaporation structure capable of dissipating heat is provided outside the side of the bottom of the heat pipe structure away from the liquid storage structure. The evaporation structure includes a heat conduction pad 20, a heating block 21, a heating rod 22, and a heat preservation sleeve 23. The heat conduction pad 20 is sleeved at the bent portion of the bottom end of the thermosyphon 8 away from the liquid storage structure. The heating block 21 is fixedly connected inside the heat conduction pad 20, and the heat preservation sleeve 23 is sleeved outside the heat conduction pad 20 and the heating block 21. Both ends of the heat preservation sleeve 23 are inserted with heating rods 22 arranged in an annular array, and several heating rods 22 are inserted inside the heating block 21. After the heating rods 22 are powered on, they can heat the heating block 21. The heat on the heating block 21 can be transferred to the thermosyphon 8 through the heat conduction pad 20, while the heat preservation sleeve 23 can prevent the heat of the evaporation structure from being dissipated. The evaporation structure can fully simulate the heat source in the actual situation and provide a heat source for the test platform;

[0032] A second adjustment mechanism for adjusting its height is provided outside the evaporation structure. The second adjustment mechanism includes a second cylinder 24 and a clamping ring 25. The clamping ring 25 is fixedly connected to the movable rod body of the second cylinder 24 and sleeved outside the heat preservation sleeve 23. A bolt for adjusting its clamping degree is threadedly inserted through the opening of the clamping ring 25. The second cylinder 24 is fixedly installed on the side of the inside of the heat insulation chamber 1 away from the first cylinder 18. By controlling the expansion and contraction of the movable end of the second cylinder 24, the height of the evaporation structure can be adjusted, so as to facilitate adjusting the height difference between the condensation structure and the evaporation structure;

[0033] When it is necessary to test the influence of the height difference between the condensation structure and the evaporation structure on the overall performance, ensure that the first solenoid valve 7, the sixth solenoid valve 16, the seventh solenoid valve 17, the eighth solenoid valve 29, and the ninth solenoid valve 30 are all in the closed state, and the second solenoid valve 9, the third solenoid valve 10, the fourth solenoid valve 11, and the fifth solenoid valve 12 are all in the open state. At this time, the refrigerant only flows in the thermosyphon 8. The tester controls the refrigerant filling amount of the system to be in a suitable state, and adjusts the up and down movement of the evaporation structure through the second cylinder 24, so as to test the refrigeration performance of the thermosyphon at different height differences between the condensation structure and the evaporation structure;

[0034] One end of the heat pipe structure far from the outlet end of the condensation structure is communicated with the inlet end of the condensation structure. On one side of the outside of the heat pipe structure near the inlet end of the condensation structure, there is a gas-liquid separation structure that can be communicated with the heat pipe structure. The gas-liquid separation structure includes a gas-liquid separator 26, an inlet pipeline 27, an outlet pipeline 28, an eighth electromagnetic valve 29, and a ninth electromagnetic valve 30. The two ends of the inlet pipeline 27 are respectively communicated with the inside of the thermosyphon 8 and the gas-liquid separator 26. The two ends of the outlet pipeline 28 are respectively communicated with the inside of the thermosyphon 8 near one side of the inlet end of the condenser 4 and the gas-liquid separator 26. The eighth electromagnetic valve 29 is fixedly installed at one end of the inlet pipeline 27 close to the thermosyphon 8, and the ninth electromagnetic valve 30 is fixedly installed at one end of the outlet pipeline 28 close to the thermosyphon 8. The condenser 4, the liquid storage tank 13, and the gas-liquid separator 26 are all well-known prior arts, so no more elaboration will be made here;

[0035] When it is necessary to test the influence of the gas-liquid separator 26 on the performance of the two-phase closed thermosyphon, first ensure that the sixth electromagnetic valve 16 and the seventh electromagnetic valve 17 are in the closed state, and the liquid storage tank 13 is independent of the thermosyphon 8. Then control the first electromagnetic valve 7, the fourth electromagnetic valve 11, and the fifth electromagnetic valve 12 to close, and control the eighth electromagnetic valve 29 and the ninth electromagnetic valve 30 to open, so that the gas-liquid separator 26 is connected in series in the thermosyphon 8. The tester controls the refrigerant filling amount and the height difference of the heat exchanger to be in a suitable state, so as to test the influence of the gas-liquid separator 26 on the performance of the two-phase closed thermosyphon;

[0036] In the middle of the inner top wall, inner bottom wall, and inner side wall of the heat insulation chamber 1, there are heating lamps 2 that can heat the environmental temperature inside the heat insulation chamber 1. The environmental temperature inside the heat insulation chamber 1 can be adjusted through the heating lamps 2, which is convenient for adjusting the temperature inside the heat insulation chamber 1 according to the test situation. At both ends of the inner side wall of the heat insulation chamber 1, there are thermocouple sensors 3 that can measure the temperature inside. A number of thermocouple sensors 3 are equidistantly arranged outside the thermosyphon 8 to measure the temperature inside. Thermocouple sensors 3 are arranged outside both the inlet pipeline 27 and the outlet pipeline 28 of the gas-liquid separator 26. Through the setting of multiple thermocouple sensors 3, the temperature conditions of each part in the circulation pipeline can be detected in real time, so as to accurately understand the temperature distribution in the circulation pipeline under different test conditions;

[0037] The heating lamps 2, thermocouple sensors 3, condenser 4, first electromagnetic valve 7, second electromagnetic valve 9, third electromagnetic valve 10, fourth electromagnetic valve 11, fifth electromagnetic valve 12, sixth electromagnetic valve 16, seventh electromagnetic valve 17, first cylinder 18, heating rod 22, second cylinder 24, eighth electromagnetic valve 29, and ninth electromagnetic valve 30 are all electrically connected to an external control unit and are all electrically connected to an external circuit through wires.

[0038] To sum up, the steps for using the two-phase closed thermosyphon performance test platform are as follows:

[0039] 1. The tester controls the first solenoid valve 7, the sixth solenoid valve 16, the seventh solenoid valve 17, the eighth solenoid valve 29 and the ninth solenoid valve 30 to be closed, controls the second solenoid valve 9, the third solenoid valve 10, the fourth solenoid valve 11 and the fifth solenoid valve 12 to be opened, adjusts the refrigerant charge amount and observes the refrigeration performance of the entire circulation pipeline, so as to test the influence of the refrigerant charge amount on the performance of the two-phase closed thermosyphon;

[0040] 2. Control the refrigerant charge amount and the height difference of the heat exchanger to be in a suitable state. Close the first solenoid valve 7, the second solenoid valve 9, the third solenoid valve 10, the eighth solenoid valve 29 and the ninth solenoid valve 30, and open the sixth solenoid valve 16, the seventh solenoid valve 17, the fourth solenoid valve 11 and the fifth solenoid valve 12, so that the refrigerant can flow through the liquid storage device 13. Control the height of the liquid storage device 13 by controlling the expansion and contraction of the movable end of the first cylinder 18, so as to test the influence of the structure of the liquid storage device and its set height on the performance of the two-phase closed thermosyphon;

[0041] 3. Control the first solenoid valve 7, the sixth solenoid valve 16, the seventh solenoid valve 17, the eighth solenoid valve 29 and the ninth solenoid valve 30 to be all in the closed state, and the second solenoid valve 9, the third solenoid valve 10, the fourth solenoid valve 11 and the fifth solenoid valve 12 to be all in the open state. Adjust the evaporation structure to move up and down through the second cylinder 24, so as to test the refrigeration performance of the thermosyphon when the condensation structure and the evaporation structure are at different height differences;

[0042] 4. Control the sixth solenoid valve 16 and the seventh solenoid valve 17 to be in the closed state, and the liquid storage device 13 is independent of the thermosyphon 8. Then control the first solenoid valve 7, the fourth solenoid valve 11 and the fifth solenoid valve 12 to be closed, and control the eighth solenoid valve 29 and the ninth solenoid valve 30 to be opened, so that the gas-liquid separator 26 is connected in series in the thermosyphon 8, so as to test the influence of the gas-liquid separator 26 on the performance of the two-phase closed thermosyphon.

[0043] The above description is only for explaining the present invention. It should be understood that the present invention is not limited to the above embodiments, and various variations conforming to the idea of the present invention are within the protection scope of the present invention.

Claims

1. A two-phase closed thermosyphon performance testing platform, comprising a heat-insulating chamber (1) capable of isolating the external ambient temperature, characterized in that: A condensation structure capable of absorbing heat is arranged on the top of the inner side wall of the heat insulation chamber (1), and a heat pipe structure capable of communicating with the condensation structure is arranged at the outlet end of the condensation structure; a liquid storage structure capable of communicating with the heat pipe structure is arranged on the outside of the heat pipe structure near the outlet end of the condensation structure; a first adjustment mechanism capable of adjusting the height of the liquid storage structure is arranged on the outside of the liquid storage structure; an evaporation structure capable of radiating heat is arranged on the outside of the bottom of the heat pipe structure away from the liquid storage structure; a second adjustment mechanism capable of adjusting the height of the evaporation structure is arranged on the outside; an end of the heat pipe structure away from the outlet end of the condensation structure is connected to the inlet end of the condensation structure; a gas-liquid separation structure capable of communicating with the heat pipe structure is arranged on the outside of the heat pipe structure near the inlet end of the condensation structure; a heating lamp (2) capable of heating the ambient temperature in the heat insulation chamber (1) is fixedly mounted on the inner top wall, inner bottom wall and the middle part of the inner side wall of the heat insulation chamber (1); a thermocouple sensor (3) capable of measuring the ambient temperature inside the heat pipe structure and the ambient temperature in the heat insulation chamber (1) is arranged on the outside of the heat pipe structure and the inner surface of the heat insulation chamber (1).

2. A two-phase closed thermosyphon performance testing platform according to claim 1, characterized in that: The condensation structure comprises a condenser (4), a mounting frame (5), an injection pipe (6) and a first solenoid valve (7); the mounting frame (5) is fixedly connected to the back of the condenser (4) and fixedly installed on the top of the inner wall of the heat-insulating chamber (1); the injection pipe (6) is fixedly connected to the outlet end of the condenser (4) and communicated with the interior thereof; the first solenoid valve (7) is fixedly installed at the junction of the inside of the injection pipe (6) and the communicating part with the outlet end of the condenser (4) and can control the opening and closing of the injection pipe (6); the outside of the outlet end and the inlet end of the condenser (4) are fixedly installed with thermocouple sensors (3).

3. A two-phase closed thermosyphon performance testing platform according to claim 2, characterized in that: The heat pipe structure comprises a thermal siphon (8), a second solenoid valve (9), a third solenoid valve (10), a fourth solenoid valve (11) and a fifth solenoid valve (12); the two ends of the thermal siphon (8) are respectively connected to the outlet end and the inlet end of the condenser (4); the top of the thermal siphon (8) near the outlet end of the condenser (4) is arranged as a spiral structure; the second solenoid valve (9) is fixedly mounted below the connection point between the thermal siphon (8) and the inlet end of the liquid storage structure; the third solenoid valve (10) is fixedly mounted above the connection point between the thermal siphon (8) and the outlet end of the liquid storage structure; the fourth solenoid valve (11) is fixedly mounted above the connection point between the thermal siphon (8) and the inlet end of the gas-liquid separation structure; and the fifth solenoid valve (12) is fixedly mounted on the side of the connection point between the thermal siphon (8) and the outlet end of the gas-liquid separation structure away from the condenser (4).

4. A two-phase closed thermosyphon performance testing platform according to claim 3, characterized in that: The liquid reservoir structure comprises a liquid reservoir (13), an upper connecting pipe (14), a lower connecting pipe (15), a sixth solenoid valve (16) and a seventh solenoid valve (17); one end of the upper connecting pipe (14) is connected to the thermal siphon (8) and the other end is arranged at the center of the upper surface of the liquid reservoir (13); one end of the lower connecting pipe (15) is connected to the thermal siphon (8) and the other end is arranged at the center of the lower surface of the liquid reservoir (13); the upper connecting pipe (14) and the lower connecting pipe (15) are connected to the thermal siphon (8) and the other end is arranged at the center of the lower surface of the liquid reservoir (13); The connecting point between the connecting pipe (15) and the thermal siphon (8) is respectively arranged above the second solenoid valve (9) and below the third solenoid valve (10); the upper connecting pipe (14) and the lower connecting pipe (15) are both connected to the interior of the liquid reservoir (13); the sixth solenoid valve (16) is fixedly installed at one end of the upper connecting pipe (14) close to the thermal siphon (8); and the seventh solenoid valve (17) is fixedly installed at one end of the lower connecting pipe (15) close to the thermal siphon (8).

5. A two-phase closed thermosyphon performance testing platform according to claim 4, characterized in that: The first adjustment mechanism comprises a first cylinder (18) and an arc-shaped fixing frame (19); the arc-shaped fixing frame (19) is fixedly connected to a movable rod body of the first cylinder (18) and is clamped to the middle part of the outer surface of the liquid reservoir (13) by means of bolts; the first cylinder (18) is fixedly connected to the bottom of the inside of the heat-insulating chamber (1) near the liquid reservoir (13).

6. A two-phase closed thermosyphon performance testing platform according to claim 5, characterized in that: The evaporation structure comprises a thermal pad (20), a heating block (21), a heating rod (22) and a heat-insulating sleeve (23); the thermal pad (20) is sleeved on a bend at the bottom end of the thermosiphon (8) away from the liquid storage structure; the heating block (21) is fixedly connected to the inside of the thermal pad (20) and the heat-insulating sleeve (23) is sleeved on the outside of the thermal pad (20) and the heating block (21); both ends of the heat-insulating sleeve (23) are plugged with heating rods (22) arranged in a ring array, and a plurality of heating rods (22) are plugged into the inside of the heating block (21).

7. A two-phase closed thermosyphon performance testing platform according to claim 6, characterized in that: The second adjustment mechanism comprises a second cylinder (24) and a clamping ring (25); the clamping ring (25) is fixedly connected to a movable rod of the second cylinder (24) and sleeved on the outside of the thermal insulation sleeve (23); a bolt whose clamping degree can be adjusted is threadedly penetrated at an opening of the clamping ring (25); the second cylinder (24) is fixedly mounted on a side of the interior of the thermal insulation chamber (1) away from the first cylinder (18).

8. A two-phase closed thermosyphon performance testing platform according to claim 6, characterized in that: The gas-liquid separation structure comprises a gas-liquid separator (26), an inlet pipeline (27), an outlet pipeline (28), an eighth solenoid valve (29) and a ninth solenoid valve (30); the two ends of the inlet pipeline (27) are respectively connected to the thermal siphon (8) and the interior of the gas-liquid separator (26); the two ends of the outlet pipeline (28) are respectively connected to the side of the thermal siphon (8) close to the inlet end of the condenser (4) and the interior of the gas-liquid separator (26); the eighth solenoid valve (29) is fixedly mounted on one end of the inlet pipeline (27) close to the thermal siphon (8); and the ninth solenoid valve (30) is fixedly mounted on one end of the outlet pipeline (28) close to the thermal siphon (8).

9. A two-phase closed thermosyphon performance testing platform according to claim 8, characterized in that: A plurality of thermocouple sensors (3) capable of measuring the temperature inside the thermosyphon (8) are equidistantly arranged outside the thermosyphon (8), thermocouple sensors (3) are arranged outside the inlet pipe (27) and the outlet pipe (28) of the gas-liquid separator (26), and thermocouple sensors (3) capable of measuring the temperature inside the heat-insulating chamber (1) are fixedly mounted at both ends of the inner wall.

10. A two-phase closed thermosyphon performance testing platform according to claim 1, characterized in that: The heat-insulating warehouse (1) comprises a warehouse body (101), a warehouse door (102) and a heat-insulating layer (103); the interiors of the warehouse body (101) and the warehouse door (102) are both filled with the heat-insulating layer (103); the warehouse door (102) is hinged on the front of the warehouse body (101); a magnetic strip (104) is fixedly connected to a side of the warehouse door (102) that can be in contact with the front of the warehouse body (101); an iron strip (105) that can be magnetically attracted to the magnetic strip (104) is fixedly connected to a portion of the front of the warehouse body (101) that corresponds to the magnetic strip (104); the warehouse door (102) can be closely attached to the front of the warehouse body (101) and its interior can be sealed by means of the magnetic strip (104) and the iron strip (105).

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