High-current equipment fluid circuit temperature control system and temperature control method under strong electric power environment

Abstract

The present invention discloses a fluid circuit temperature control system and a temperature control method for high-current devices in a high-voltage environment. The whole system includes a pump assembly, a pressure gauge, a thermometer, a programmable flow control valve, a liquid storage tank, a flowmeter, a particle filter, an ion filter, a filling and discharge valve, etc. The purpose is to address the temperature control requirements of high-power devices, especially those operating at high currents and high frequencies, solve the heat dissipation problem of about KW level, and effectively shield the interference of the electromagnetic environment, so as to meet the space in-orbit application requirements of the devices.

Description

Technical Field

[0001] The present invention relates to a high-precision fluid circuit temperature control system applicable to a strong electric environment in the field of aerospace applications, and particularly to a large-current instantaneous working device, which instantaneously forms a high electromagnetic field environment around the device, puts forward higher requirements for the performance and installation position of sensors, and has a narrow working temperature range, and requires precise temperature control. Background Art

[0002] Devices with an instantaneous power of more than KW level will generate a large amount of heat dissipation during operation, and the internal temperature of the device will rapidly increase in a short time. At present, for this type of device on the ground in China, an open large-flow fluid circuit system is mostly used for temperature control, and the device is cooled by a large amount of fluid flushing. Obviously, this open fluid circuit system cannot meet the in-orbit use of spacecraft. Moreover, in a strong electromagnetic environment, it will also have a greater impact on the acquisition and transmission of sensor signals in the circuit system, resulting in signal interruption or distortion. Summary of the Invention

[0003] The purpose of the present invention is to address the temperature control requirements of high-power devices, especially devices operating at high currents and high frequencies, and provide a fluid circuit temperature control system for large-current devices in a strong electric environment, which solves the heat dissipation problem of about KW level and effectively shields the interference of the electromagnetic environment, and can meet the space in-orbit application requirements of the device.

[0004] The technical solution of the present invention is: a fluid circuit temperature control system for large-current devices in a strong electric environment, including a liquid storage tank, a programmable pump assembly, a first flow sensor, a programmable flow dividing valve, a phase change energy storage device, a second flow sensor, a second thermometer, a third thermometer, a second stop valve, a large-current instantaneous load device, a first conductivity sensor, a filter for the filter bypass, a first stop valve, a second conductivity sensor, a programmable computer, and a high-power power supply;

[0005] The liquid outlet of the liquid storage tank is connected to the liquid inlet of the programmed pump assembly. The liquid outlet of the programmed pump assembly is connected to the liquid inlet of the first flow sensor. The liquid outlet of the first flow sensor is connected to the liquid inlet of the programmed flow dividing valve. The first flow dividing outlet of the programmed flow dividing valve is connected to the liquid inlet of the phase change energy storage device. The second flow dividing outlet of the programmed flow dividing valve is connected to the liquid inlet of the second flow sensor. The liquid outlets of the phase change energy storage device and the second flow sensor are in parallel and divided into two paths: the first path is connected to the liquid inlet of the second stop valve, and the liquid outlet of the second stop valve is connected to the liquid inlet of the high-current instantaneous load device; the second path is connected to the liquid inlet of the first conductivity sensor, the liquid outlet of the first conductivity sensor is connected to the liquid inlet of the filter for bypass filtration, and the liquid outlet of the filter for bypass filtration is connected to the liquid inlet of the first stop valve; the liquid outlets of the high-current instantaneous load device and the first stop valve are in parallel and connected to the liquid inlet of the second conductivity sensor, and the liquid outlet of the second conductivity sensor is connected to the liquid inlet of the liquid storage tank;

[0006] The second thermometer is arranged at the liquid outlet of the phase change energy storage device for detecting the temperature of the cold fluid. The third thermometer is arranged at the liquid inlet of the high-current instantaneous load device for controlling the temperature at 20±1°C. The high-current instantaneous load device is a device capable of loading a strong current of ≥300A;

[0007] The programmed computer is connected and communicates with the programmed flow dividing valve, the high-power power supply, the programmed pump assembly and the high-current instantaneous load device.

[0008] Further, a discharge valve is further included. The liquid inlet of the discharge valve is connected to the liquid outlet of the second conductivity sensor. When the whole system does not work for a long time, the fluid working medium inside the pipeline is discharged.

[0009] Further, a filling valve is further included. The liquid outlet of the filling valve is connected to the liquid inlet of the first flow sensor. Before the whole system starts to work, the fluid working medium is filled into the pipeline through the filling valve.

[0010] Further, a first pressure gauge, a second pressure gauge, a third pressure gauge, a fourth pressure gauge, a fifth pressure gauge, a sixth pressure gauge and a seventh pressure gauge are further included;

[0011] The first pressure gauge is arranged at the liquid inlet of the programmable control pump assembly to detect the pump inlet pressure and prevent cavitation; the second pressure gauge is arranged at the liquid outlet of the programmable control pump assembly to detect the pump outlet pressure; the third pressure gauge is arranged at the liquid inlet of the phase change energy storage device to detect the inlet pressure of the phase change energy storage device; the fourth pressure gauge is arranged at the liquid outlet of the phase change energy storage device to detect the outlet pressure of the phase change energy storage device; the fifth pressure gauge is arranged at the liquid inlet of the high-current instantaneous load device to detect the load inlet pressure of the high-current instantaneous load device; the sixth pressure gauge is arranged at the liquid outlet of the high-current instantaneous load device to detect the load outlet pressure of the high-current instantaneous load device; the seventh pressure gauge is arranged at the liquid outlet of the filter for the filtration bypass to detect the filtration bypass outlet pressure.

[0012] Further, a first thermometer and a fourth thermometer are also included;

[0013] The first thermometer is arranged at the liquid outlet of the programmable control pump assembly to detect the temperature of the hot fluid; the fourth thermometer is arranged at the liquid outlet of the high-current instantaneous load device to detect the load outlet temperature.

[0014] Further, all thermometers, pressure gauges, flow meters and conductivity sensors are arranged outside the 0.5 m hemispherical space of the power supply terminal of the high-current instantaneous load device.

[0015] Further, all the wires of the thermometers, pressure gauges, flow meters and conductivity sensors adopt FF46 / 0.12 shielded twisted pair wires.

[0016] Further, the filter for the filtration bypass includes a 2 μs / cm ion filter and a 5 μs impurity filter; a 30 μs impurity filter is arranged at the liquid inlet of the high-current instantaneous load device.

[0017] The present invention also provides a temperature control method for the fluid circuit of a high-current device in a strong electric environment, and the specific steps are as follows:

[0018] Step 1: Complete the filling of the liquid storage tank;

[0019] Step 2: Open the first stop valve and close the second stop valve; set the programmable control flow dividing valve to the state of fully opening the second flow sensor;

[0020] Step 3: Start the programmable control pump assembly at a low speed with a flow rate ≤ 3 L / min;

[0021] Step 4: Judge whether the detected value of the second conductivity sensor is less than 2 μs / cm. If so, go to Step 5; if not, return to Step 3;

[0022] Step 5: Determine whether the detected value of the second thermometer is less than or equal to 15°C. If so, proceed to Step 6; if not, return to Step 3.

[0023] Step 6: Open the second stop valve, close the first stop valve, and increase the flow rate of the programmed pump assembly to 28 - 32 L / min.

[0024] Step 7: Switch the programmed flow control valve to be PID-controlled by the programmed computer.

[0025] Step 8: Determine whether the detected value of the third thermometer satisfies being greater than or equal to 19°C and less than or equal to 21°C. If so, proceed to Step 9; if not, return to Step 7.

[0026] Step 9: Apply current to the high-current instantaneous load device and continuously monitor whether the detected value of the second conductivity sensor is less than 2 μs / cm and whether the detected value of the third thermometer satisfies being greater than or equal to 19°C and less than or equal to 21°C. If both conditions are met, continue to apply current to the high-current instantaneous load device; if the detected value of the second conductivity sensor (E2) is greater than or equal to 2 μs / cm, return to Step 3; if the detected value of the third thermometer does not satisfy being greater than or equal to 19°C and less than or equal to 21°C, cut off the power supply of the high-current instantaneous load device and return to Step 2.

[0027] Furthermore, when the high-current device fluid loop temperature control system in the strong electrical environment is working, a separate surface is facing the cryogenic space as the heat dissipation surface of the phase change energy storage device.

[0028] The beneficial effects of the present invention are as follows: The entire system has a compact structure, small volume, and perfect functions, all concentrated in one module. The equipment has good expandability, and the temperature control ability and anti-interference ability of a single set of equipment both meet the on-orbit requirements of space. The capabilities that the entire system can achieve are as follows:

[0029] (1) The conductivity of the fluid working in the entire system can be continuously controlled below 2 μs / cm and can be recycled.

[0030] (2) The phase change energy storage device dissipates heat through radiation in space and provides a cold source of ≤15°C for the system repeatedly without the need to rely on special refrigeration equipment.

[0031] (3) The inlet fluid temperature of the high-current instantaneous working device is controlled at 20 ± 1°C.

[0032] (4) After conductivity control and anti-shielding measures, the signal sensor can work normally around equipment with a working current ≥ 300 A and a frequency ≥ 50 Hz. Description of the Drawings

[0033] Figure 1Schematic diagram of the temperature control system for the fluid circuit of high-current equipment in a strong electrical environment;

[0034] Figure 2 Flow chart of the temperature control method for the fluid circuit of high-current equipment in a strong electrical environment.

[0035] In the figure: 1 is a liquid storage tank, 2 is a programmable pump assembly, 3 is a programmable flow dividing valve, 4 is a phase change energy storage device, 5 is a 30 μs impurity filter, 6 is a high-current instantaneous load device, 7 is a 2 μs / cm ion filter, 8 is a 5 μs impurity filter, 9 is a discharge valve, and 10 is a filling valve.

[0036] Q0 is the first flow sensor, Q1 is the second flow sensor, T0 is the first thermometer, T1 is the second thermometer, T2 is the third thermometer, T3 is the fourth thermometer, P0 is the first pressure gauge, P1 is the second pressure gauge, P2 is the third pressure gauge, P3 is the fourth pressure gauge, P4 is the fifth pressure gauge, P5 is the sixth pressure gauge, P6 is the seventh pressure gauge, F1 is the first stop valve, F2 is the second stop valve, E1 is the first conductivity sensor, and E2 is the second conductivity sensor. Specific implementation mode

[0037] The present invention will be further described below with reference to the accompanying drawings.

[0038] As Figure 1 described, the temperature control system for the fluid circuit of high-current equipment in a strong electrical environment includes a liquid storage tank 1, a programmable pump assembly 2, a first flow sensor Q0, a first thermometer T0, a programmable flow dividing valve 3, a phase change energy storage device 4, a second flow sensor Q1, a second thermometer T1, a third thermometer T2, a fourth thermometer T3, a second stop valve F2, a 30 μs impurity filter 5, a high-current instantaneous load device 6, a first conductivity sensor E1, a 2 μs / cm ion filter 7, a 5 μs impurity filter 8, a first stop valve F1, a second conductivity sensor E2, a programmable computer, a high-power power supply, a discharge valve 9, a filling valve 10, a first pressure gauge P0, a second pressure gauge P1, a third pressure gauge P2, a fourth pressure gauge P3, a fifth pressure gauge P4, a sixth pressure gauge P5, and a seventh pressure gauge P6. The high-current instantaneous load device 6 is a device capable of loading a strong current of ≥300 A.

[0039] The liquid outlet of the liquid storage tank 1 is connected to the liquid inlet of the programmable pump assembly 2. The liquid outlet of the programmable pump assembly 2 is connected to the liquid inlet of the first flow sensor Q0. The liquid outlet of the first flow sensor Q0 is connected to the liquid inlet of the programmable flow divider valve 3. The first flow division outlet of the programmable flow divider valve 3 is connected to the liquid inlet of the phase change energy storage device 4. The second flow division outlet of the programmable flow divider valve 3 is connected to the liquid inlet of the second flow sensor Q1. The liquid outlets of the phase change energy storage device 4 and the second flow sensor Q1 are in parallel and divided into two paths: The first path is connected to the liquid inlet of the second stop valve F2. The liquid outlet of the second stop valve F2 is connected to the liquid inlet of the 30 μs impurity filter 5. The liquid outlet of the 30 μs impurity filter 5 is connected to the liquid inlet of the high-current instantaneous load device 6. The second path is connected to the liquid inlet of the first conductivity sensor E1. The liquid outlet of the first conductivity sensor E1 is connected to the liquid inlet of the 2 μs / cm ion filter 7. The liquid outlet of the 2 μs / cm ion filter 7 is connected to the liquid inlet of the 5 μs impurity filter 8. The liquid outlet of the 5 μs impurity filter 8 is connected to the liquid inlet of the first stop valve F1. The liquid outlets of the high-current instantaneous load device 6 and the first stop valve F1 are in parallel and connected to the liquid inlet of the second conductivity sensor E2. The liquid outlet of the second conductivity sensor E2 is connected to the liquid inlet of the liquid storage tank 1.

[0040] The first thermometer T0 is arranged at the liquid outlet of the programmable pump assembly 2 and is used to detect the temperature of the hot fluid. The second thermometer T1 is arranged at the liquid outlet of the phase change energy storage device 4 and is used to detect the temperature of the cold fluid. The third thermometer T2 is arranged at the liquid inlet of the high-current instantaneous load device 6 and is used to control the temperature target at 20 ± 1 °C. The fourth thermometer T3 is arranged at the liquid outlet of the high-current instantaneous load device 6 and is used to detect the load outlet temperature.

[0041] The programmable computer is connected and communicates with the programmable flow divider valve 3, the high-power power supply, the programmable pump assembly 2, and the high-current instantaneous load device 6.

[0042] The liquid inlet of the discharge valve 9 is connected to the liquid outlet of the second conductivity sensor E2. When the whole system does not work for a long time, the fluid working medium inside the discharge pipeline is discharged.

[0043] The liquid outlet of the filling valve 10 is connected to the liquid inlet of the first flow sensor Q0. Before the whole system starts to work, the fluid working medium is filled into the pipeline through the filling valve.

[0044] The first pressure gauge P0 is arranged at the liquid inlet of the programmable pump assembly 2 for detecting the pump inlet pressure to prevent cavitation. The second pressure gauge P1 is arranged at the liquid outlet of the programmable pump assembly 2 for detecting the pump outlet pressure. The third pressure gauge P2 is arranged at the liquid inlet of the phase change energy storage device 4 for detecting the inlet pressure of the phase change energy storage device 4. The fourth pressure gauge P3 is arranged at the liquid outlet of the phase change energy storage device 4 for detecting the outlet pressure of the phase change energy storage device 4. The fifth pressure gauge P4 is arranged at the liquid inlet of the high-current instantaneous load device 6 for detecting the load inlet pressure of the high-current instantaneous load device 6. The sixth pressure gauge P5 is arranged at the liquid outlet of the high-current instantaneous load device 6 for detecting the load outlet pressure of the high-current instantaneous load device 6. The seventh pressure gauge P6 is arranged at the liquid outlet of the filter for the filtration bypass for detecting the filtration bypass outlet pressure.

[0045] As Figure 2 shown, the temperature control method for the fluid circuit of the high-current device in a strong electrical environment is as follows:

[0046] Step 1: Complete the filling of the liquid storage tank 1.

[0047] Step 2: Open the first stop valve F1 and close the second stop valve F2. Set the programmable flow dividing valve 3 to the state of fully opening the second flow sensor Q1.

[0048] Step 3: Start the programmable pump assembly 2 at a low speed with a flow rate ≤ 3 L / min.

[0049] Step 4: Determine whether the detected value of the second conductivity sensor E2 is less than 2 μs / cm. If so, proceed to Step 5. If not, return to Step 3.

[0050] Step 5: Determine whether the detected value of the second thermometer T1 is less than or equal to 15 °C. If so, proceed to Step 6. If not, return to Step 3.

[0051] Step 6: Open the second stop valve F2, close the first stop valve F1, and increase the flow rate of the programmable pump assembly 2 to 28 - 32 L / min.

[0052] Step 7: Switch the programmable flow dividing valve 3 to be PID-controlled by the programmable computer.

[0053] Step 8: Determine whether the detected value of the third thermometer T2 satisfies being greater than or equal to 19 °C and less than or equal to 21 °C. If so, proceed to Step 9. If not, return to Step 7.

[0054] Step 9: Apply current to the high-current instantaneous load device 6, and monitor in real time whether the detected value of the second conductivity sensor E2 is less than 2 μs / cm, and whether the detected value of the third thermometer T2 meets the condition of being greater than or equal to 19°C and less than or equal to 21°C. If both conditions are met, continue to apply current to the high-current instantaneous load device 6. If the detected value of the second conductivity sensor E2 is greater than or equal to 2 μs / cm, return to Step 3. If the detected value of the third thermometer T2 does not meet the condition of being greater than or equal to 19°C and less than or equal to 21°C, cut off the power supply of the high-current instantaneous load device 6 and return to Step 2.

[0055] The present invention is directed to high-power instantaneous working devices above KW level. A circulating fluid loop is used to cool the high-power device in a cyclic manner to ensure that the fluid temperature at the internal inlet during the operation of the high-current instantaneous device is controlled within 20 ± 1°C, and the flow rate in the loop is ≥ 30 L / min.

[0056] The entire system takes the high-current instantaneous device as the core. To reduce the fluid pressure borne by the high-current instantaneous device and ease the design difficulty of the internal flow channels, a layout scheme with the core device placed at the rear is adopted.

[0057] The whole set of system includes a pump assembly, a pressure gauge, a thermometer, a programmable flow control valve, a liquid storage tank, a flowmeter, a particle filter, an ion filter, a filling and discharging valve, etc. The composition diagram of the whole system is as Figure 1 shown. And for the strong electrical environment generated by the high-current instantaneous device, the sensor arrangement and signal transmission equipment are specially designed. In addition to using high-grade components, the sensors are arranged outside the 0.5 m hemispherical space of the power supply terminal of the high-current device.

[0058] According to the usage requirements of the whole system, as shown in Table 1, 4 sets of thermometers, 7 sets of pressure gauges, 2 sets of flowmeters, and 2 sets of conductivity sensors are designed in the loop system. All sensor wires use FF46 / 0.12 shielded twisted pair wires.

[0059] Table 1

[0060]

[0061]

[0062] It should be emphasized that a conductivity filtering device is designed in the loop system, as Figure 1As shown by the single dotted line position in the middle, during the gap when the load is not working, close the second cut-off valve F2 and open the first cut-off valve F1 to filter the working medium in the entire circuit, reduce the conductivity of the working medium in the system to below 2 μs / cm, and then start the test. The control of the conductivity in the circuit is the key to ensuring the normal operation of high-current instantaneous equipment. When a strong current (≥300 A) is applied, it can effectively ensure that the fluid in the internal microchannels does not conduct electricity and cause equipment short-circuit. This solution of using a bypass for conductivity filtration and switching to the main path during operation can not only effectively reduce the concentration of conductivity in the circuit, but also reduce the flow resistance of the system, thereby reducing the pump head. Such a compact and lightweight design solution makes it possible for aerospace applications.

[0063] The working process of the entire system is as Figure 2 shown. Before the pump assembly starts at full power, it must first meet the conditions that the conductivity is less than 2 μs / cm and the outlet temperature of the phase change energy storage device is less than 15 °C in sequence. Then the pump assembly works at full power, and the programmable shunt valve performs PID control. When the fluid inlet temperature of the high-current equipment meets 20 ± 1 °C, start to apply a strong current to work, and monitor the conductivity and the fluid inlet temperature (T2) in real time during the loading process. When any one of the conditions is not met, immediately cut off the power and stop working.

[0064] The entire system adopts a scheme of placing the equipment at the back. Starting from the programmable pump assembly, they are in sequence a pressure gauge, a thermometer, a flowmeter, a programmable shunt valve, a phase change energy storage device, an ion filtration bypass, the main path of the core equipment, and a liquid storage tank. Two bypass systems are designed in the entire system. One is the phase change energy storage bypass, which provides a cold source for the entire system; the other is the conductivity filtration circuit, which is responsible for reducing the conductivity in the circuit. The first bypass is controlled by the programmable shunt valve, and the second bypass is controlled by two electric cut-off valves.

[0065] As a cold source device, the phase change energy storage device cools the phase change material to below the phase change point through radiation heat dissipation in space before the entire system starts. After the system starts, it absorbs the heat generated by the high-current equipment through the fluid working medium and stores it in the phase change material. During the intermittent operation of the high-current equipment, the heat is dissipated through radiation again, and so on, to realize the cyclic operation of the high-current equipment.

[0066] The optimal working environment for the equipment of this system is -15 °C to 45 °C. When in use, a separate surface is facing the cryogenic space as the heat dissipation surface of the phase change energy storage device.

[0067] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A fluid circuit temperature control system for high-current equipment in a strong electrical environment, characterized in that: It includes a liquid storage tank (1), a programmable pump assembly (2), a first flow sensor, a programmable flow divider valve (3), a phase change energy storage device (4), a second flow sensor, a second thermometer, a third thermometer, a second stop valve, a high-current instantaneous load device (6), a first conductivity sensor, a filter for the filtration bypass, a first stop valve, a second conductivity sensor, a programmable computer, and a high-power power supply; The liquid outlet of the liquid storage tank (1) is connected to the liquid inlet of the programmable pump assembly (2), the liquid outlet of the programmable pump assembly (2) is connected to the liquid inlet of the first flow sensor, the liquid outlet of the first flow sensor is connected to the liquid inlet of the programmable flow divider valve (3), the first diversion outlet of the programmable flow divider valve (3) is connected to the liquid inlet of the phase change energy storage device (4), the second diversion outlet of the programmable flow divider valve (3) is connected to the liquid inlet of the second flow sensor, and the liquid outlets of the phase change energy storage device (4) and the second flow sensor are in parallel and divided into two paths: the first path is connected to the liquid inlet of the second stop valve, and the liquid outlet of the second stop valve is connected to the liquid inlet of the high-current instantaneous load device (6); the second path is connected to the liquid inlet of the first conductivity sensor, the liquid outlet of the first conductivity sensor is connected to the liquid inlet of the filter for the filtration bypass, and the liquid outlet of the filter for the filtration bypass is connected to the liquid inlet of the first stop valve; the liquid outlets of the high-current instantaneous load device (6) and the first stop valve are in parallel and connected to the liquid inlet of the second conductivity sensor, and the liquid outlet of the second conductivity sensor is connected to the liquid inlet of the liquid storage tank (1); The second thermometer is arranged at the liquid outlet of the phase change energy storage device (4), and the third thermometer is arranged at the liquid inlet of the high-current instantaneous load device (6); the high-current instantaneous load device (6) is a device capable of loading a strong current of ≥300A; The programmable computer is connected and communicates with the programmable flow divider valve (3), the high-power power supply, the programmable pump assembly (2), and the high-current instantaneous load device (6); It further includes a drain valve (9), and the liquid inlet of the drain valve (9) is connected to the liquid outlet of the second conductivity sensor; It further includes a filling valve (10), and the liquid outlet of the filling valve (10) is in parallel connection with the liquid inlet of the first flow sensor.

2. The large-current equipment fluid circuit temperature control system in a strong electrical environment according to claim 1, wherein: It further includes a first pressure gauge, a second pressure gauge, a third pressure gauge, a fourth pressure gauge, a fifth pressure gauge, a sixth pressure gauge, and a seventh pressure gauge; The first pressure gauge is arranged at the liquid inlet of the programmable pump assembly (2), the second pressure gauge is arranged at the liquid outlet of the programmable pump assembly (2), the third pressure gauge is arranged at the liquid inlet of the phase change energy storage device (4), the fourth pressure gauge is arranged at the liquid outlet of the phase change energy storage device (4), the fifth pressure gauge is arranged at the liquid inlet of the high-current instantaneous load device (6), the sixth pressure gauge is arranged at the liquid outlet of the high-current instantaneous load device (6), and the seventh pressure gauge is arranged at the liquid outlet of the filter for the filtration bypass.

3. The large current device fluid circuit temperature control system in a strong electrical environment according to claim 1, characterized in that: It further includes a first thermometer and a fourth thermometer; The first thermometer is arranged at the liquid outlet of the programmable pump assembly (2), and the fourth thermometer is arranged at the liquid outlet of the high-current instantaneous load device (6).

4. The large-current device fluid circuit temperature control system in a strong electrical environment according to any one of claims 1-3, characterized in that: All thermometers, pressure gauges, flow meters and conductivity sensors are arranged outside the 0.5 m hemispherical space of the power supply terminals of the high-current instantaneous load device (6).

5. The large-current device fluid circuit temperature control system in a strong electrical environment according to any one of claims 1-3, characterized in that: All wires of thermometers, pressure gauges, flow meters and conductivity sensors adopt FF46 / 0.12 shielded twisted pair wires.

6. The large-current device fluid circuit temperature control system in a strong electrical environment according to claim 1, characterized in that: The filter for the filter bypass includes a 2 μs / cm ion filter (7) and a 5 μs impurity filter (8); a 30 μs impurity filter (5) is arranged at the liquid inlet of the high-current instantaneous load device (6).

7. The large-current device fluid circuit temperature control method in a strong electrical environment implemented by the large-current device fluid circuit temperature control system according to any one of claims 1-6, characterized in that: The specific steps are as follows: Step 1: Complete the filling of the liquid storage tank (1). Step 2: Open the first stop valve and close the second stop valve; set the programmable flow dividing valve (3) to the state of fully opening the second flow sensor. Step 3: Slowly start the programmable pump assembly (2) with a flow rate ≤ 3 L / min. Step 4: Judge whether the detected value of the second conductivity sensor is less than 2 μs / cm. If so, go to Step 5; if not, return to Step 3. Step 5: Judge whether the detected value of the second thermometer is less than or equal to 15 °C. If so, go to Step 6; if not, return to Step 3. Step 6: Open the second stop valve, close the first stop valve, and increase the flow rate of the programmable pump assembly (2) to 28 - 32 L / min. Step 7: Switch the programmable flow dividing valve (3) to be PID-controlled by the programmable computer. Step 8: Judge whether the detected value of the third thermometer meets the condition of being greater than or equal to 19 °C and less than or equal to 21 °C. If so, go to Step 9; if not, return to Step 7. Step 9: Apply current to the high-current instantaneous load device (6), and continuously monitor whether the detected value of the second conductivity sensor is less than 2 μs / cm and whether the detected value of the third thermometer meets the condition of being greater than or equal to 19 °C and less than or equal to 21 °C. If both are met, continuously apply current to the high-current instantaneous load device (6); if the detected value of the second conductivity sensor is greater than or equal to 2 μs / cm, return to Step 3; if the detected value of the third thermometer does not meet the condition of being greater than or equal to 19 °C and less than or equal to 21 °C, cut off the power supply of the high-current instantaneous load device (6) and return to Step 2.

8. The large-current device fluid circuit temperature control method in a strong electrical environment according to claim 7, wherein: When the temperature control system of the fluid circuit of the high-current device in the strong electrical environment works, a separate surface faces the cryogenic space as the heat dissipation surface of the phase change energy storage device.

Images