High and low temperature test system for new energy

Abstract

The utility model discloses a high and low temperature test system for new energy, which relates to the technical field of high and low temperature test systems, and comprises a plate heat exchanger for adjusting the high and low temperature of a test environment and keeping the environment temperature constant; the refrigerating system is connected with the plate heat exchanger and used for low-temperature refrigeration on the plate heat exchanger; and the waterway circulation system is used for transmitting the temperature on the plate heat exchanger to the tested piece. Continuous heat conduction liquid is provided for the plate heat exchanger through the waterway circulating system, and the plate heat exchanger is refrigerated and cooled by the refrigerating system, so that a stable high-temperature or low-temperature constant-temperature environment can be provided for a tested piece, and meanwhile, a Freon refrigerant in the refrigerating system can be recycled; the high and low temperature test system is more efficient and energy-saving in use, and the high and low temperature environment test effect of the tested piece is better.

Description

Technical Field

[0001] The utility model relates to the technical field of high and low temperature testing systems, in particular to a high and low temperature testing system for new energy. Background Art

[0002] In the new energy industry, in order to ensure the normal operation and safe use of new energy equipment such as solar photovoltaic modules and wind turbines, it is necessary to provide high and low temperature test systems to test, evaluate and verify them, which will help improve the reliability of the use of new energy equipment and promote its optimization and improvement.

[0003] In the prior art, the high and low temperature test system used in new energy equipment is generally composed of a heating system and a refrigeration system. The refrigeration system is used to cool down to achieve a low-temperature test environment, while the heating system is used to heat up to provide a high-temperature test environment.

[0004] In the actual use of the high and low temperature test system currently used in the new energy industry, the Freon used in its refrigeration system is difficult to recycle and reuse, which not only increases the use cost of the high and low temperature test system, but also the consumption of Freon makes the test system unable to meet the energy-saving goals and easily harms the environment. Therefore, a high and low temperature test system for new energy with recyclable Freon is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a high and low temperature testing system for new energy to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a high and low temperature testing system for new energy, comprising:

[0007] Plate heat exchanger, adjusts the high and low temperature of the test environment and keeps the ambient temperature constant;

[0008] A refrigeration system, connected to the plate heat exchanger, for low-temperature refrigeration on the plate heat exchanger;

[0009] The water circulation system is used to transfer the temperature on the plate heat exchanger to the tested object.

[0010] Preferably, the refrigeration system includes a compressor, an oil separator connected to the compressor, a water-cooled condenser connected to the oil separator, a liquid storage tank connected to the water-cooled condenser, a drying filter connected to the liquid storage tank, a solenoid valve 1 connected to the drying filter and an economizer connected to the solenoid valve 1, and the economizer is connected to a plate heat exchanger.

[0011] Preferably, a refrigeration solenoid valve is connected between the economizer and the plate heat exchanger, and a gas-liquid separator is connected between the inlet of the compressor and the outlet of the plate heat exchanger.

[0012] Preferably, a liquid injection solenoid valve is connected between the economizer and the gas-liquid separator, a bypass solenoid valve is connected between the refrigeration solenoid valve and the plate heat exchanger, and the bypass solenoid valve is connected to the inlet of the gas-liquid separator.

[0013] Preferably, the water circulation system includes a liquid replenishing tank, a heating water tank connected to the liquid replenishing tank, a circulating pump 2 connected to the heating water tank, a test piece connected to the circulating pump 2, a circulating pump 1 connected to the test piece, and the circulating pump 1 is connected to the plate heat exchanger.

[0014] Preferably, the load inlet position of the tested piece is connected to a pressure sensor 1 and a flow sensor, and the load return position of the tested piece is connected to a pressure sensor 2 and a temperature sensor.

[0015] Preferably, a liquid replenishment solenoid valve is provided between the liquid replenishment tank and the heating water tank, an internal circulation outlet solenoid valve is provided between the heating water tank and circulating pump 1, an internal circulation return solenoid valve is connected between the heating water tank and the plate heat exchanger, an external circulation outlet solenoid valve is connected between the heating water tank and circulating pump 2, and an external circulation return solenoid valve is connected between the heating water tank and pressure sensor 2.

[0016] Preferably, the plate heat exchanger is respectively connected to an external circulation water inlet solenoid valve and an external circulation water return solenoid valve, and a second solenoid valve is connected between the external circulation water inlet solenoid valve and the liquid replenishing tank.

[0017] Technical effects and advantages of the utility model:

[0018] The utility model provides continuous heat-conducting liquid to the plate heat exchanger through a water circulation system, and cooperates with the refrigeration system to cool the plate heat exchanger, so as to provide a stable high-temperature or low-temperature constant temperature environment for the tested object, and can also recycle the Freon refrigerant in the refrigeration system, so that the use of the high and low temperature test system is more efficient and energy-saving, and the high and low temperature environment test effect of the tested object is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the process structure of the utility model.

[0020] In the figure: 1. compressor; 2. oil separator; 3. water-cooled condenser; 4. liquid storage tank; 5. drying filter; 6. solenoid valve 1; 7. economizer; 8. refrigeration solenoid valve; 9. plate heat exchanger; 10. liquid injection solenoid valve; 11. gas-liquid separator; 12. bypass solenoid valve; 13. circulation pump 1; 14. heating water tank; 15. liquid replenishment tank; 16. circulation pump 2; 17. pressure sensor 1; 18. flow sensor; 19. temperature sensor; 20. pressure sensor 2; 21. solenoid valve 2; 22. liquid replenishment solenoid valve; 23. external circulation water inlet solenoid valve; 24. external circulation water return solenoid valve; 25. internal circulation return solenoid valve; 26. internal circulation outlet solenoid valve; 27. external circulation outlet solenoid valve; 28. external circulation return solenoid valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides Figure 1A high and low temperature test system for new energy shown in the figure includes a plate heat exchanger 9, a refrigeration system and a water circulation system. The plate heat exchanger 9 adjusts the high and low temperatures of the test environment and keeps the ambient temperature constant. The plate heat exchanger 9 can exchange heat between the refrigeration system and the water system to achieve the effect of heat transfer, so that the water system can be used to provide a constant temperature test environment for the test piece. The refrigeration system is connected to the plate heat exchanger 9 and is used for low temperature refrigeration on the plate heat exchanger 9. The refrigeration system transfers the low temperature to the plate heat exchanger 9, so that the plate heat exchanger 9 has a lower temperature. In this way, the plate heat exchanger 9 can be used to transfer the low temperature to the water circulation system, and the water circulation system The system is used to transfer the temperature on the plate heat exchanger 9 to the tested object. The water circulation system can utilize the circulation of liquid to enable the liquid entering the plate heat exchanger 9 to exchange heat with it, thereby achieving the purpose of cooling the liquid in the water circulation system, so that the low-temperature liquid can provide a low-temperature environment for the tested object, with energy-saving, high-efficiency and environmental protection effects. The refrigeration system includes a compressor 1, an oil separator 2 connected to the compressor 1, a water-cooled condenser 3 connected to the oil separator 2, a liquid storage tank 4 connected to the water-cooled condenser 3, a drying filter 5 connected to the liquid storage tank 4, an electromagnetic valve 6 connected to the drying filter 5 and an economic valve 6 connected to the electromagnetic valve 6 The economizer 7 is connected to the plate heat exchanger 9, and a refrigeration solenoid valve 8 is connected between the economizer 7 and the plate heat exchanger 9. A gas-liquid separator 11 is connected between the inlet of the compressor 1 and the outlet of the plate heat exchanger 9. When working, after the compressor 1 is started, the high-temperature and high-pressure Freon gas is discharged into the oil separator 2. After the oil and gas are separated in the oil separator 2, it enters the water-cooled condenser 3 and condenses into a liquid at room temperature and high pressure, which is stored in the liquid storage tank 4. After being dried by the drying filter 5, it is pre-cooled by the economizer 7 and then enters the plate heat exchanger 9 through the refrigeration solenoid valve 8 and the thermal expansion valve to become a gas for cooling treatment, so that the liquid transported to the plate heat exchanger 9 in the water circulation system can be cooled. It is enough to realize heat exchange, and the used Freon returns to the compressor 1 through the gas-liquid separator 11 to complete a refrigeration cycle; further, a liquid injection solenoid valve 10 is connected between the economizer 7 and the gas-liquid separator 11, and the economizer 7 inputs the Freon into the gas-liquid separator 11 through the liquid injection solenoid valve 10, and a bypass solenoid valve 12 is connected between the refrigeration solenoid valve 8 and the plate heat exchanger 9, and the bypass solenoid valve 12 is connected to the inlet of the gas-liquid separator 11. After the Freon comes out of the refrigeration solenoid valve 8, it can directly enter the gas-liquid separator 11 through the bypass solenoid valve 12, and finally return to the compressor 1, so that the Freon can directly return to the compressor 1 through two circuits without passing through the plate heat exchanger 9.

[0023] Furthermore, the water circulation system includes a liquid replenishing tank 15, a heating water tank 14 connected to the liquid replenishing tank 15, a circulating pump 2 16 connected to the heating water tank 14, a test piece connected to the circulating pump 2 16, and a circulating pump 1 13 connected to the test piece. The circulating pump 13 is connected to the plate heat exchanger 9. In actual use, the heating water tank 14 automatically controls the temperature according to specific temperature requirements through the PID algorithm of the host computer. The liquid replenishing tank 15 can directly replenish liquid into the heating water tank 14, and the circulating pump 2 16 can transport the liquid in the heating water tank 14 to the test piece to provide constant temperature conditions, thereby achieving testing under high and low temperature environments.

[0024] Next, the load inlet position of the tested piece is connected with a pressure sensor 17 and a flow sensor 18, and the circulating pump 13 realizes automatic adjustment of the flow rate and flow through the frequency converter according to the feedback signals of the flow sensor 18 and the pressure sensor 17. The load return position of the tested piece is connected with a pressure sensor 20 and a temperature sensor 19. The pressure sensor 20 and the temperature sensor 19 can detect the temperature and circulation pressure of the liquid discharged from the tested piece, so as to provide instant feedback and adjust the temperature. A liquid replenishment solenoid valve 22 is provided between the liquid replenishment tank 15 and the heating water tank 14 to facilitate the control of the liquid replenishment tank 15 to transport the liquid into the heating water tank 14. An internal circulation outlet solenoid valve 26 is provided between the heating water tank 14 and the circulating pump 13 to control the plate-type exchanger. The plate heat exchanger 9 is controlled to discharge liquid from the outlet in the internal circulation. An internal circulation return solenoid valve 25 is connected between the heating water tank 14 and the plate heat exchanger 9 to control the opening and closing of the return port in the internal circulation of the plate heat exchanger 9. An external circulation outlet solenoid valve 27 is connected between the heating water tank 14 and the circulating pump 16. An external circulation return solenoid valve 28 is connected between the heating water tank 14 and the pressure sensor 20. An external circulation water inlet solenoid valve 23 and an external circulation water return solenoid valve 24 are respectively connected to the plate heat exchanger 9. The external circulation return solenoid valve 28 and the external circulation water return solenoid valve 24 can control the opening and closing of the outlet and return port in the external circulation of the plate heat exchanger 9. A solenoid valve 21 is connected between the external circulation water inlet solenoid valve 23 and the liquid replenishing tank 15 to control the opening and closing of the liquid inlet in the liquid replenishing tank 15.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high and low temperature testing system for new energy, characterized in that: include: A plate heat exchanger (9) is used to adjust the high and low temperatures of the test environment and keep the ambient temperature constant; A refrigeration system connected to the plate heat exchanger (9) and used for low-temperature refrigeration on the plate heat exchanger (9); The water circulation system is used to transfer the temperature on the plate heat exchanger (9) to the tested object.

2. A high and low temperature testing system for new energy according to claim 1, characterized in that: The refrigeration system comprises a compressor (1), an oil separator (2) connected to the compressor (1), a water-cooled condenser (3) connected to the oil separator (2), a liquid storage tank (4) connected to the water-cooled condenser (3), a drying filter (5) connected to the liquid storage tank (4), a solenoid valve (6) connected to the drying filter (5), and an economizer (7) connected to the solenoid valve (6), wherein the economizer (7) is connected to a plate heat exchanger (9).

3. A high and low temperature testing system for new energy according to claim 2, characterized in that: A refrigeration solenoid valve (8) is connected between the economizer (7) and the plate heat exchanger (9), and a gas-liquid separator (11) is connected between the inlet of the compressor (1) and the outlet of the plate heat exchanger (9).

4. A high and low temperature testing system for new energy according to claim 3, characterized in that: A liquid injection solenoid valve (10) is connected between the economizer (7) and the gas-liquid separator (11), a bypass solenoid valve (12) is connected between the refrigeration solenoid valve (8) and the plate heat exchanger (9), and the bypass solenoid valve (12) is connected to the inlet of the gas-liquid separator (11).

5. A high and low temperature testing system for new energy according to claim 1, characterized in that: The water circulation system comprises a liquid replenishing tank (15), a heating water tank (14) connected to the liquid replenishing tank (15), a second circulating pump (16) connected to the heating water tank (14), a test piece connected to the second circulating pump (16), and a first circulating pump (13) connected to the test piece, wherein the first circulating pump (13) is connected to the plate heat exchanger (9).

6. A high and low temperature testing system for new energy according to claim 5, characterized in that: The load inlet position of the tested piece is connected to a pressure sensor 1 (17) and a flow sensor (18), and the load return position of the tested piece is connected to a pressure sensor 2 (20) and a temperature sensor (19).

7. A high and low temperature testing system for new energy according to claim 6, characterized in that: A liquid replenishment solenoid valve (22) is provided between the liquid replenishment tank (15) and the heating water tank (14), an internal circulation outlet solenoid valve (26) is provided between the heating water tank (14) and the circulation pump 1 (13), an internal circulation return solenoid valve (25) is connected between the heating water tank (14) and the plate heat exchanger (9), an external circulation outlet solenoid valve (27) is connected between the heating water tank (14) and the circulation pump 2 (16), and an external circulation return solenoid valve (28) is connected between the heating water tank (14) and the pressure sensor 2 (20).

8. A high and low temperature testing system for new energy according to claim 6, characterized in that: The plate heat exchanger (9) is respectively connected to an external circulation water inlet solenoid valve (23) and an external circulation water return solenoid valve (24), and a second solenoid valve (21) is connected between the external circulation water inlet solenoid valve (23) and the liquid replenishment tank (15).

Images