Experimental device for simulating deep sea high-pressure low-temperature environment

Abstract

The invention discloses an experimental device for simulating a deep sea high-pressure and low-temperature environment, which relates to the technical field of ocean engineering and hydraulic pressure and comprises a pressure cylinder, a temperature control assembly, a driving assembly and a pressure control assembly. The temperature control assembly comprises a cooler and a temperature sensor which are both connected with the pressure cylinder, the driving assembly comprises a storage box and a driving part which are connected, and the driving part is connected with the cooler and used for driving fluid in the storage box to enter the pressure cylinder after being cooled by the cooler, so that the pressure cylinder is cooled to a preset temperature. The pressure control assembly comprises a pressure sensor, a first overflow valve and a second overflow valve, the pressure sensor is arranged on the pressure cylinder, the first overflow valve is connected between the driving piece and the cooler, and the second overflow valve is connected with the pressure cylinder. When the fluid flows into the pressure cylinder to reach the preset low temperature, the pressure cylinder can be pressurized, the pressure of the pressure cylinder can reach the preset pressure by adjusting the first overflow valve and the second overflow valve, and a deep-sea high-pressure low-temperature environment is created.

Description

Technical Field

[0001] The invention relates to the field of marine engineering and hydraulic technology, and in particular to an experimental device for simulating a deep-sea high-pressure and low-temperature environment. Background Art

[0002] In order to explore the performance of some deep-sea components that often work in deep-sea high-pressure and low-temperature environments, the usual method is to use an experimental device to simulate the deep-sea high-pressure and low-temperature environment, and then place the deep-sea components in the experimental device for experiments and observation and recording, so as to accurately understand the changes of deep-sea components in the deep-sea high-pressure and low-temperature environment, and provide reference information for the subsequent research and development and production of deep-sea components. Simulating the low temperature of the deep sea in a high-pressure environment has always been a difficulty in conducting deep-sea environment simulation related experiments.

[0003] However, current deep-sea environment experimental devices only use the compressibility of fluid to control the deep-sea environmental pressure to achieve a high-pressure environment, and are unable to simulate a low-temperature environment at the same time. This results in the inability of existing experimental devices to truly reproduce the high pressure and low temperature that deep-sea components are subjected to when entering the sea, and is unable to provide information on the changes in deep-sea components in the deep-sea high-pressure and low-temperature environment. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and propose an experimental device for simulating deep-sea high-pressure and low-temperature environments, so as to solve the technical problem that the deep-sea environment experimental devices in the prior art only use the compressibility of the fluid to control the deep-sea environment pressure to achieve a high-pressure environment, but cannot simulate a low-temperature environment at the same time. This results in the inability of the existing experimental devices to truly reproduce the high pressure and low temperature that deep-sea components are subjected to when entering the sea, and cannot provide information on the changes of deep-sea components in the deep-sea high-pressure and low-temperature environment.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: The present invention provides an experimental device for simulating a deep-sea high-pressure and low-temperature environment, comprising: The pressure cylinder has a small internal volume and can be pressurized with a fluid medium including water or oil. During the experiment, only deep-sea elements are placed inside the pressure cylinder; a temperature control assembly, including a cooler and a temperature sensor both connected to the pressure cylinder; A driving assembly, comprising a storage box and a driving member connected to each other, wherein the driving member is connected to the cooler and is used to drive the fluid in the storage box to pass through the cooler for cooling and then enter the pressure cylinder; and The pressure control component includes a pressure sensor, a first relief valve and a second relief valve. The pressure sensor is arranged in the pressure cylinder. The first relief valve is connected between the driving member and the cooler. The second relief valve is connected to the pressure cylinder.

[0006] In some embodiments, the driving assembly further includes a motor, the driving member is a hydraulic pump, and the motor is connected to the hydraulic pump and is used to drive the hydraulic pump to work so as to drive the fluid in the storage tank into the cooler.

[0007] In some embodiments, the pressure sensor is also connected to the motor, and can drive the motor to control the hydraulic pump to work when the pressure measured by the pressure sensor is less than a preset value.

[0008] In some embodiments, the temperature sensor is connected to the motor and can drive the motor to control the hydraulic pump to work when the temperature measured by the temperature sensor is less than a preset value.

[0009] In some embodiments, the temperature sensor is also connected to the cooler. When the temperature of the pressure cylinder measured by the temperature sensor is higher than a preset temperature, the temperature sensor controls the cooler to lower the cooling temperature; when the temperature of the pressure cylinder measured by the temperature sensor is lower than a preset temperature, the temperature sensor controls the cooler to increase the cooling temperature.

[0010] In some embodiments, the pressure control assembly further includes a pressure-maintaining stop valve, which is connected to an end of the second overflow valve away from the pressure cylinder and is used to maintain pressure in the pressure cylinder.

[0011] In some embodiments, the pressure control assembly further includes a pressure relief stop valve, which is connected in parallel to both ends of the second relief valve and is used to quickly relieve pressure from the pressure cylinder.

[0012] In some embodiments, the pressure control assembly further includes a throttle valve and a reflux filter, the throttle valve is connected to the pressure-maintaining stop valve, and two ends of the reflux filter are respectively connected to the throttle valve and the storage box.

[0013] In some embodiments, the experimental device further includes a pre-cooling component, which is connected to the storage tank and is used to pre-cool the fluid in the storage tank.

[0014] In some embodiments, the experimental device further includes a one-way valve, which is disposed between the cooler and the driving member and is used to prevent the fluid of the cooler from flowing back to the driving member.

[0015] Compared with the prior art, the experimental device for simulating the deep-sea high-pressure and low-temperature environment provided by the present invention has a driving member capable of driving the fluid in the storage box to flow into the cooler, and the fluid is cooled to a preset temperature through the cooling of the cooler. Since the pressure cylinder is a miniaturized pressure cylinder, only deep-sea components are placed inside it during the experiment, and only the cooler is required to maintain the fluid temperature in the pressure cylinder at the preset temperature. At the same time, while the fluid is being filled into the pressure cylinder to cool it down, the pressure cylinder can also be pressurized. By adjusting the first overflow valve and the second overflow valve, the pressure of the pressure cylinder can reach the preset pressure, thereby creating a deep-sea high-pressure and low-temperature environment. The deep-sea components can be placed in the pressure cylinder to observe and record the changes of the deep-sea components in the deep-sea high-pressure and low-temperature environment, providing information with reference value for the subsequent research and development and production of deep-sea components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of an experimental device for simulating a deep-sea high-pressure and low-temperature environment provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] In order to solve the technical problem that the deep-sea environment experimental device in the prior art only uses the compressibility of the fluid to control the deep-sea environment pressure to achieve a high-pressure environment, but cannot simulate a low-temperature environment at the same time, which results in the inability of the existing experimental device to truly reproduce the high pressure and low temperature that the deep-sea components are subjected to when entering the sea, and cannot provide information on the changes of the deep-sea components in the deep-sea high-pressure and low-temperature environment, the present invention provides an experimental device for simulating the deep-sea high-pressure and low-temperature environment, which can create a deep-sea high-pressure and low-temperature environment so as to place the deep-sea components in the environment, observe and record the changes of the deep-sea components in the deep-sea high-pressure and low-temperature environment, and provide information with reference value for the subsequent research and development and production of deep-sea components.

[0019] See also Figure 1 , Figure 1The schematic diagram of the structure of an experimental device for simulating a deep-sea high-pressure and low-temperature environment in one embodiment of the present invention includes a pressure cylinder 1, a temperature control assembly, a drive assembly and a pressure control assembly. The temperature control assembly includes a cooler 2 and a temperature sensor 3 both connected to the pressure cylinder 1; the drive assembly includes a storage box 4 and a drive member 5 connected to the cooler 2, and the drive member 5 is connected to the cooler 2 and is used to drive the fluid in the storage box 4 to enter the pressure cylinder 1 after cooling through the cooler 2. The pressure control assembly includes a pressure sensor 6, a first relief valve 7 and a second relief valve 8. The pressure sensor 6 is provided in the pressure cylinder 1, the first relief valve 7 is connected between the drive member 5 and the cooler 2, and the second relief valve 8 is connected to the pressure cylinder 1.

[0020] In this embodiment, the main purpose is to drive the pressure cylinder 1 to reach a preset low temperature and a preset high pressure state, so that the deep-sea components located inside the pressure cylinder 1 are in a real deep-sea low temperature and high pressure environment, and then observe the changes of the deep-sea components in this low temperature and high pressure environment, so as to provide information with reference value for the subsequent research and development and production of deep-sea components.

[0021] The outside of the cooler 2 is connected to a circulatory cooling medium, the temperature of which depends on the cooling temperature of the cooler 2, and the cooling temperature of the cooler 2 can be controlled by adjusting the temperature of the cooling medium. The storage box 4 stores a fluid, which can be but is not limited to oil or water, etc. The driving member 5 can drive the fluid in the storage box 4 to flow into the cooler 2, and the cooler 2 can cool the fluid so that the fluid reaches a preset low temperature. The low-temperature fluid enters the pressure cylinder 1 to create a preset low-temperature environment for the pressure cylinder 1. The temperature sensor 3 is connected to the cooler 2. When the internal temperature of the pressure cylinder 1 measured by the temperature sensor 3 is greater than the preset temperature, the temperature sensor 3 automatically controls the cooler 2 to lower the cooling temperature. When the internal temperature of the pressure cylinder 1 measured by the temperature sensor 3 is less than the preset temperature, the temperature sensor 3 automatically controls the cooler 2 to increase the cooling temperature.

[0022] The pressure sensor 6 is provided in the pressure cylinder 1 and can be used to monitor the pressure inside the pressure cylinder 1 in real time, so as to observe whether the pressure inside the pressure cylinder 1 reaches the preset pressure. The first relief valve 7 and the second relief valve 8 are both relief valves. When the pressure at the inlet of the relief valve exceeds the set pressure, they will automatically switch to the open state to release the excess pressure until the current pressure is less than or equal to the set pressure. When the pressure experienced by the first relief valve 7 and the second relief valve 8 is greater than the set value, the overpressure will be automatically released to prevent the risk of explosion caused by excessive pressure inside the pressure cylinder 1. It should be emphasized that the main function of the first relief valve 7 is to prevent the pressure inside the pressure cylinder 1 from being too high, and the main function of the second relief valve 8 is to facilitate maintaining the pressure inside the pressure cylinder 1 at the preset pressure. The set pressure of the first relief valve 7 is usually set to be slightly higher than the set pressure of the second relief valve 8, so that when the second relief valve 8 starts to release pressure, the first relief valve 7 is still in a closed state, which can avoid the pressure inside the pressure cylinder 1 from being released in advance.

[0023] Since the deep-sea element is in normal working condition in the pressure cylinder 1, the deep-sea element itself will generate heat and affect the temperature and pressure inside the pressure cylinder 1. Therefore, the automatic control function of the temperature sensor 3 and the pressure sensor 6 is required to automatically control the fluid to continuously enter the pressure cylinder 1 to replenish the pressure and control the cooler 2 to heat up or cool down the fluid, so that the temperature and pressure inside the pressure cylinder 1 can quickly reach the preset temperature and preset pressure, which is conducive to improving the experimental efficiency and the authenticity of the experiment.

[0024] In one embodiment, see Figure 1 The drive assembly further includes a motor 9, and the drive member 5 is a hydraulic pump, the maximum rated working pressure of which should be higher than the preset pressure of the pressure cylinder 1. The motor 9 is connected to the hydraulic pump and is used to drive the hydraulic pump to work, so as to drive the fluid in the storage tank 4 into the cooler 2. In this embodiment, the motor 9 drives the hydraulic pump to work, so as to drive the fluid in the storage tank 4 into the cooler 2, and the fluid flows into the pressure cylinder 1 after being cooled by the cooler 2, thereby driving the pressure cylinder 1 to form a low-temperature environment.

[0025] In one embodiment, see Figure 1, the pressure sensor 6 is also connected to the motor 9, and can drive the motor 9 to control the hydraulic pump to work when the pressure measured by the pressure sensor 6 is less than a preset value. In addition to the function of monitoring the pressure inside the pressure cylinder 1, the pressure sensor 6 of this embodiment also has a control function, which is used to automatically control the hydraulic pump to work when the pressure inside the pressure cylinder 1 is less than the preset pressure, so as to drive the fluid in the storage box 4 to continue to flow into the pressure cylinder 1 and continue to increase the pressure inside the pressure cylinder 1. When the pressure inside the pressure cylinder 1 reaches the preset pressure, the pressure sensor 6 controls the motor 9 to stop working, the hydraulic pump to stop working, and the fluid in the storage box 4 to stop flowing into the pressure cylinder 1. Through the monitoring and automatic control functions of the pressure sensor 6, the preset pressure can be quickly reached inside the pressure cylinder 1 to improve the experimental efficiency.

[0026] In one embodiment, see Figure 1 , the temperature sensor 3 is connected to the motor 9 and the cooler 2, and can drive the motor 9 to control the hydraulic pump to work when the temperature measured by the temperature sensor 3 is less than the preset value. In addition to the function of monitoring the temperature inside the pressure cylinder 1, the temperature sensor 3 of this embodiment also has a control function, which is used to automatically control the hydraulic pump to work when the temperature inside the pressure cylinder 1 is greater than the preset temperature, so as to drive the fluid in the storage box 4 to continue to flow into the cooler 2, and then flow into the pressure cylinder 1 after being cooled by the cooler 2, and continue to cool the inside of the pressure cylinder 1. When the temperature inside the pressure cylinder 1 reaches the preset temperature, the temperature sensor 3 controls the motor 9 to stop working, the hydraulic pump to stop working, and the fluid in the storage box 4 to stop flowing into the pressure cylinder 1. Through the monitoring and automatic control functions of the temperature sensor 3, the inside of the pressure cylinder 1 can quickly reach the preset temperature to improve the experimental efficiency.

[0027] Furthermore, when the temperature of the pressure cylinder 1 measured by the temperature sensor 3 is higher than the preset temperature, the temperature sensor 3 controls the cooler 1 to lower the cooling temperature, so that the temperature of the fluid flowing into the cooler 1 drops to a lower temperature, and the fluid flows into the pressure cylinder 1, which can further cool the inside of the pressure cylinder 1. When the temperature of the pressure cylinder 1 measured by the temperature sensor 3 is lower than the preset temperature, the temperature sensor 3 controls the cooler 2 to increase the cooling temperature, so that the temperature of the fluid flowing into the cooler 1 is increased, and the fluid flows into the pressure cylinder 1, which can increase the temperature inside the pressure cylinder 1, so that the temperature inside the pressure cylinder 1 quickly reaches the preset temperature.

[0028] In one embodiment, see Figure 1The pressure control assembly further includes a pressure-maintaining stop valve 10, which is connected to the end of the second relief valve 8 away from the pressure cylinder 1 and is used to maintain the pressure of the pressure cylinder 1. In this embodiment, when the temperature and pressure of the pressure cylinder 1 reach the preset values, the pressure-maintaining stop valve 10 can be closed to maintain the pressure and temperature of the pressure cylinder 1, so that the deep-sea components located inside the pressure cylinder 1 are in an environment of preset low temperature and preset pressure, which is convenient for observing and recording the changes of the deep-sea components in this environment.

[0029] In one embodiment, see Figure 1 The pressure control assembly also includes a pressure relief stop valve 11, which is connected in parallel to both ends of the second relief valve 8 and is used to quickly relieve pressure on the pressure cylinder 1. When the experiment is completed, the pressure holding stop valve 10 is opened to gradually reduce the opening pressure of the second relief valve 8. When it is reduced to 50% of the pressure holding pressure, the pressure relief stop valve 11 is opened to achieve rapid pressure relief, so as to improve the efficiency of the beginning and end of the experiment.

[0030] For further information, see Figure 1 The pressure control assembly also includes a throttle valve 12 and a return filter 13. The throttle valve 12 is connected to the pressure-maintaining stop valve 10. The two ends of the return filter 13 are respectively connected to the throttle valve 12 and the storage box 4. In this embodiment, after the experiment is over, the fluid in the pressure cylinder 1 needs to be released to the storage box 4 to recover the fluid. During the release of the fluid, the fluid flows into the storage box 4 through the second overflow valve 8, the pressure-maintaining stop valve 10, the throttle valve 12 and the return oil filter 13 in sequence. The impact force of the fluid flowing out of the pressure-maintaining stop valve 10 is relatively large. By setting the throttle valve 12, the impact force of the fluid can be reduced, and the fluid can flow slowly and orderly through the return oil filter 13. After being filtered by the return oil filter 13, the fluid flows into the storage box 4 for recovery.

[0031] In one embodiment, see Figure 1 The experimental device also includes a pre-refrigeration component, which is connected to the storage box 4 and is used to pre-cool the fluid in the storage box 4, so that the fluid has a lower temperature before entering the pressure cylinder 1, and then after cooling by the cooler 2, the fluid can quickly reach the preset low temperature, which is conducive to improving the experimental efficiency. The pre-refrigeration component includes an evaporator 14, a compressor 15, a condenser 16 and a throttling expansion valve 17 connected in sequence, the throttling expansion valve 17 is connected to the evaporator 14, and the evaporator 14 is connected to the storage box 4. The pre-refrigeration component of this embodiment can be understood as an air conditioning system, which is used to cool the storage box 4 and reduce the temperature of the fluid in advance.

[0032] In one embodiment, see Figure 1The experimental device also includes a one-way valve 18 and an oil outlet filter 19. The one-way valve 18 is arranged between the cooler 2 and the driving member 5, and is used to inhibit the fluid of the cooler 2 from flowing back to the driving member 5. The one-way valve 18 of this embodiment can improve the efficiency of the fluid entering the pressure cylinder 1 and reduce the pressure loss of the pressure cylinder 1 by inhibiting the backflow of the fluid 2. The oil outlet filter 19 can be used to filter impurities in the fluid output from the storage box 4 to prevent the impurities from affecting the experiment.

[0033] In one embodiment, see Figure 1 The experimental device also includes a thermostat 20, in which the pressure cylinder 1, the temperature sensor 3 and the pressure sensor 6 are all arranged, and these components are isolated from the outside air to avoid being affected by the room temperature. The thermostat 20 can be connected to a temperature variable frequency control device, which can adjust the temperature inside the thermostat 20 to maintain the inside of the thermostat 20 at a preset temperature, which can be a temperature close to the preset temperature inside the pressure cylinder 1, so as to create a more stable low-temperature and high-pressure environment for the pressure cylinder 1.

[0034] In order to better understand the present invention, the following Figure 1 The technical solution of the present invention is described in detail: When the present invention is used, the pressure relief stop valve 11 is first closed, the pressure maintaining stop valve 10 is opened, the opening pressure of the second overflow valve 8 is adjusted to be equal to the preset pressure of the pressure cylinder 1, and the pre-refrigeration component is opened to pre-cool the liquid in the storage box 4, directly cooling it to the preset temperature inside the pressure cylinder 1; The control function of the temperature sensor 3 is turned on so that it can control the refrigeration temperature of the cooler 2, the motor 9 is started, and the hydraulic pump is driven to draw fluid from the storage box 4, which flows through the oil outlet filter 19, the one-way valve 18, the cooler 2 in sequence, and then flows into the pressure cylinder 1. Since the second overflow valve 8 is closed, when the fluid in the pressure cylinder 8 fills the entire pressure cylinder 1, the pressure is continuously increased by continuously conveying fluid to the inside of the pressure cylinder 1 until the pressure reaches the opening pressure set by the second overflow valve 8, indicating that the pressure inside the pressure cylinder 1 has reached the preset pressure at this time. In this process, the temperature sensor 3 will automatically control the refrigeration temperature of the cooler 2 so that the temperature inside the pressure cylinder 1 is equal to the preset temperature. When the pressure and temperature inside the pressure cylinder 1 are consistent with the preset values, the pressure-maintaining stop valve 10 is closed to maintain the pressure of the pressure cylinder 1. The control function of the temperature sensor 3 is turned on so that it can control the start and stop of the motor 9 and the pressure-maintaining stop valve 10. The control function of the pressure sensor 6 is turned on so that it can control the start and stop of the motor 9 and the pressure-maintaining stop valve 10.

[0035] When the pressure inside the pressure cylinder 1 is lower than the preset pressure, the pressure sensor 15 will open the motor 2 and the pressure-maintaining stop valve 10, and the fluid will continue to be filled into the pressure cylinder 1 to replenish the pressure. When the temperature inside the pressure cylinder 1 is higher than the preset temperature, the temperature sensor 3 will open the motor 2 and the pressure-maintaining stop valve 10 to allow the fluid to continue to circulate and reduce the temperature of the cooler 2. When the temperature inside the pressure cylinder 1 is lower than the preset temperature, the temperature sensor 3 will open the motor 2 and the pressure-maintaining stop valve 10 to allow the fluid to continue to circulate and increase the temperature of the cooler 7. This process is maintained for a preset time, such as half an hour or an hour, so that the deep-sea components inside the pressure cylinder 1 are in a preset low-temperature and high-pressure environment for a preset time.

[0036] After the experiment is completed, first turn off the control functions of the pressure sensor 6 and the temperature sensor 3, then turn off the motor 9 and the compressor 15, open the pressure maintaining stop valve 10, and gradually reduce the opening pressure of the second overflow valve 8 to gradually discharge the fluid in the pressure cylinder 8. When the second overflow valve 8 is reduced to less than 50% of the pressure maintaining pressure, open the pressure relief stop valve 11 to achieve rapid pressure relief of the device, open the pressure cylinder 1, take out the deep-sea element, and observe and record the changes in the deep-sea element.

[0037] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An experimental device for simulating a deep-sea high-pressure and low-temperature environment, characterized in that: include: Pressure cylinder; a temperature control assembly, including a cooler and a temperature sensor both connected to the pressure cylinder; A driving assembly, comprising a storage box and a driving member connected to each other, wherein the driving member is connected to the cooler and is used to drive the fluid in the storage box to pass through the cooler for cooling and then enter the pressure cylinder; and The pressure control component includes a pressure sensor, a first relief valve and a second relief valve. The pressure sensor is arranged in the pressure cylinder. The first relief valve is connected between the driving member and the cooler. The second relief valve is connected to the pressure cylinder.

2. The experimental device for simulating deep sea high pressure and low temperature environment according to claim 1, characterized in that: The driving assembly further includes a motor. The driving member is a hydraulic pump. The motor is connected to the hydraulic pump and is used to drive the hydraulic pump to work so as to drive the fluid in the storage tank to enter the cooler.

3. The experimental device for simulating deep sea high pressure and low temperature environment according to claim 2, characterized in that: The pressure sensor is also connected to the motor, and can drive the motor to control the hydraulic pump to work when the pressure measured by the pressure sensor is less than a preset value.

4. The experimental device for simulating deep sea high pressure and low temperature environment according to claim 2, characterized in that: The temperature sensor is connected to the motor and can drive the motor to control the hydraulic pump to work when the temperature measured by the temperature sensor is lower than a preset value.

5. The experimental device for simulating deep sea high pressure and low temperature environment according to claim 4, characterized in that: The temperature sensor is also connected to the cooler. When the temperature of the pressure cylinder measured by the temperature sensor is higher than the preset temperature, the temperature sensor controls the cooler to lower the cooling temperature; when the temperature of the pressure cylinder measured by the temperature sensor is lower than the preset temperature, the temperature sensor controls the cooler to increase the cooling temperature.

6. The experimental device for simulating deep sea high pressure and low temperature environment according to claim 1, characterized in that: The pressure control assembly further comprises a pressure-maintaining stop valve, which is connected to an end of the second overflow valve away from the pressure cylinder and is used to maintain pressure in the pressure cylinder.

7. The experimental device for simulating deep sea high pressure and low temperature environment according to claim 6, characterized in that: The pressure control assembly also includes a pressure relief stop valve, which is connected in parallel to both ends of the second relief valve and is used to quickly relieve pressure from the pressure cylinder.

8. The experimental device for simulating deep sea high pressure and low temperature environment according to claim 6, characterized in that: The pressure control assembly further includes a throttle valve and a reflux filter. The throttle valve is connected to the pressure-maintaining stop valve. Two ends of the reflux filter are respectively connected to the throttle valve and the storage box.

9. The experimental device for simulating deep sea high pressure and low temperature environment according to claim 1, characterized in that: The experimental device also includes a pre-refrigeration component, which is connected to the storage box and is used to pre-cool the fluid in the storage box.

10. The experimental device for simulating deep sea high pressure and low temperature environment according to claim 1, characterized in that: The experimental device further includes a one-way valve, which is disposed between the cooler and the driving member and is used to prevent the fluid of the cooler from flowing back to the driving member.

Images