Experimental device and experimental method for simulating deep sea environment
By designing experimental devices with pressure-resistant chambers and high-precision sensors, the shortcomings in simulated deep-sea environments in the prior art are solved, and multi-factor testing and precise control of air-tight pressure-resistant chambers are achieved, which improves the reliability and authenticity of experimental results.
Patent Information
- Application Number
- CN202510729155.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-03
- Publication Date
- 2025-07-04
AI Technical Summary
Existing experimental devices are difficult to accurately simulate the deep-sea high-pressure environment, and cannot comprehensively consider the impact of various factors on the sealing of the air-tight pressure chamber, and lack simulated components for the heat exchange process, resulting in large deviations in the experimental results.
An experimental device including pressure-resistant chamber, experimental chamber, control panel, heat exchanger tube and refrigeration device was designed, using high-strength aluminum alloy and high-pressure sealing ring, combined with high-precision sensors and refrigeration device, to achieve multi-factor simulation and real-time monitoring.
It realizes high-precision simulation of deep-sea environments, can accurately monitor and control pressure and temperature, improves the accuracy and reliability of the experiment, and truly reflects the actual performance of the air-tight pressure-keeping chamber.
Smart Images
Figure CN120253423A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of deep - sea exploration equipment, and particularly to an experimental device and an experimental method for simulating deep - sea environment. Background Art
[0002] In deep - sea exploration research, it is crucial to obtain deep - sea samples and maintain their original pressure and gas tightness. In the existing technology, for the research on the airtight pressure - maintaining cabin of deep - sea samplers, there is often a lack of experimental devices for accurately simulating the deep - sea environment. Some experimental equipment cannot accurately simulate the high - pressure environment of the deep sea, resulting in deviations in the performance research of the airtight pressure - maintaining cabin under actual deep - sea pressures. For example, some devices rely only on simple pressure - applying methods, making it difficult to achieve precise control and stable maintenance of pressure, and causing the experimental results to fail to truly reflect the actual performance of the airtight pressure - maintaining cabin in the deep - sea environment.
[0003] In addition, for the airtightness detection of the airtight pressure - maintaining cabin, most of the existing technologies adopt relatively single detection means and cannot comprehensively consider the comprehensive influence of various factors on airtightness. Moreover, during the experiment, it is difficult to synchronously and real - time monitor and adjust parameters such as temperature and pressure inside the airtight pressure - maintaining cabin, which greatly limits the in - depth analysis and research of the influencing factors of the airtight pressure - maintaining cabin. In terms of the influence of heat exchange on the airtight pressure - maintaining cabin, the existing experimental devices also lack components for effectively simulating the heat - exchange process, making it difficult to explore the influence laws of heat exchange on the cabin pressure and airtightness. Therefore, an experimental device and an experimental method for simulating deep - sea environment are needed to solve the above - mentioned technical problems. Summary of the Invention
[0004] In view of this, the present invention provides an experimental device and an experimental method for simulating deep - sea environment. Compared with traditional airtight pressure - maintaining cabins, the present invention has a compact structure and convenient operation, and has made innovations in many aspects in terms of structural design and function realization. It aims to comprehensively and highly accurately simulate the deep - sea environment, and can provide an effective test platform for the research and development, optimization and quality detection of the airtight pressure - maintaining cabin of deep - sea samplers, and helps to promote the development and progress of deep - sea sampling technology.
[0005] To achieve the above object, the present invention adopts the following technical solutions: An experimental device for simulating deep - sea environment, comprising: a pressure - resistant cabin, an experimental cabin, a control panel, a heat - exchanger pipe and a refrigeration device. The control panel is arranged on the experimental cabin. Inside the experimental cabin, there are a pressure - resistant cabin, a heat - exchanger pipe and a refrigeration device. The experimental cabin isolates the pressure - resistant cabin from the heat - exchanger pipe and the refrigeration device through a heat - insulating board. The heat - exchanger pipe surrounds the pressure - resistant cabin. The refrigeration device is connected to the heat - exchanger pipe through a pipeline, and the refrigeration device is electrically connected to the control panel.
[0006] Furthermore, the pressure-resistant cabin includes: an aluminum alloy outer shell, an upper end cover, a base, a joint, an inlet and outlet pipeline, a high-pressure ball valve, a pressure and temperature sensor, and an O-ring seal. The O-ring seal is arranged at the inner groove of the aluminum alloy outer shell. The upper end cover and the base are both clamped to the inner groove of the aluminum alloy outer shell through buckles. A pressure and temperature sensor and an inlet and outlet pipeline are arranged above the upper end cover. The pressure and temperature sensor is located on one side of the inlet and outlet pipeline. The pressure and temperature sensor is communicatively connected to the control panel. A joint is arranged at the connection between the inlet and outlet pipeline and the upper end cover. The joint is threadedly connected to the upper end cover. An inlet and outlet pipeline is fixedly connected above the joint. A high-pressure ball valve is also installed on the inlet and outlet pipeline. The inlet and outlet pipeline is externally connected to a high-precision pressurizing device. An O-ring seal is arranged at the connection of the joint.
[0007] Furthermore, the aluminum alloy outer shell, the upper end cover, the base, and the joint are all made of high-strength aluminum alloy 7075T6 material and are subjected to surface anodic oxidation treatment.
[0008] Furthermore, the refrigeration device adopts a high-pressure and high-precision rotary refrigeration device.
[0009] Furthermore, the experimental cabin includes: an experimental cabin outer shell and an experimental cabin upper cover. One end of the experimental cabin upper cover is hinged to the experimental cabin outer shell.
[0010] Furthermore, the O-ring seal is made of fluororubber material that is resistant to high pressure, seawater corrosion, and high and low temperatures.
[0011] Furthermore, a sealing groove is opened on the contact surface between the experimental cabin outer shell and the experimental cabin upper cover, and a sealing gasket is installed in the sealing groove.
[0012] Furthermore, the heat exchanger tube is made of copper alloy that is resistant to high pressure, corrosion, and has good heat conduction performance.
[0013] Furthermore, the pressure and temperature sensor adopts a high-precision and high-sensitivity sensor.
[0014] An experimental method for simulating a deep-sea environment includes the following steps: Step 1: Pre-process the prefabricated parts of the aluminum alloy outer shell, the upper end cover, the base, and the joint, and perform anodic oxidation treatment on the above parts to enhance their corrosion resistance and surface hardness; Step 2: Install O-ring seals at the connections between the upper end cover, the base, and the joint and the aluminum alloy outer shell, and then assemble the upper end cover, the base, and the aluminum alloy outer shell to ensure good sealing effect; Step 3: Install the pressure and temperature sensor on the fixed threaded hole of the aluminum alloy outer shell, connect and install the high-pressure ball valve through the joint, and complete the assembly and debugging of the pressure-resistant cabin device; Step 4: Collect experimental water quality samples, use the experimental chamber to reduce their temperature to 2°C, and ensure that the temperature fluctuates within the range of ±0.1°C; Step 5: Open the high-pressure ball valve, sequentially add the cooled experimental water quality samples to the pressure-resistant chamber, use a high-precision pressurization device to stably pressurize the pressure in the pressure-resistant chamber to 10 MPa. After the pressurization is completed, ensure that there is no air in the pressure-resistant chamber, and close the high-pressure ball valve to ensure that the pressure fluctuates within the range of ±0.1 MPa; Step 6: Place the pressure-resistant chamber into the experimental chamber. After insulating for ten hours at 2°C, place the pressure-resistant chamber in an environment with a temperature of 26.5°C and a fluctuation range of 26.3 - 26.7°C, and record the changes in the temperature and pressure inside the pressure-resistant chamber as the temperature rises; Step 7: During the experiment, the pressure and temperature sensors continuously monitor the water temperature and pressure changes inside the pressure-resistant chamber, and the data acquisition system collects and records data at intervals of every thirty seconds; Step 8: The experiments for each experimental water quality sample under the same conditions are repeated more than three times to obtain multiple groups of experimental data; Step 9: After the experiment, conduct a detailed comparative analysis of the collected data, observe the change trends and patterns of the temperature and pressure inside the pressure-resistant chamber under different experimental water quality samples, so as to determine the key factors affecting the internal pressure change of the airtight pressure-holding chamber.
[0015] The beneficial effects of the present invention are as follows: 1. By setting up a pressure-resistant chamber and pressure and temperature sensors, the present invention can accurately simulate the pressure environments at different depths in the deep sea. The temperature change can be simulated through a refrigeration device and a heat exchanger tube. Combined with the experimental chamber, multi-factor comprehensive tests can be carried out on the airtight pressure-holding chamber samples to comprehensively analyze the influence of external temperature changes on the pressure change of the water sample inside the pressure-holding chamber.
[0016] 2. The present invention is sealed through an O-ring and controls the on-off through a high-pressure ball valve, ensuring the sealing performance and safety of the overall device, and improving the accuracy and reliability of the simulation test.
[0017] 3. Through the cooperation of the pressure and temperature sensors and the high-pressure ball valve, the present invention can accurately control and monitor the pressure and temperature.
[0018] 4. The present invention can simultaneously simulate various deep-sea environmental factors such as different temperatures, pressures, and temperature environment differences. Compared with the existing single-simulation device, it can more realistically restore the actual working environment of the airtight pressure-holding chamber of the deep-sea sampler, making the experimental results more valuable for reference. Description of the Drawings
[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.
[0020] Figure 1 Schematic diagram of the overall device of the present invention; Figure 2 Cross-sectional view of the experimental cabin; Figure 3 Top view of the pressure-resistant cabin; Figure 4 Cross-sectional view of the pressure-resistant cabin; Figure 5 Schematic diagram of the overall structure of the pressure-resistant cabin; Figure 6 Surface seawater temperature-pressure curve graph; Figure 7 Surface seawater time-temperature curve graph; Figure 8 Deep seawater temperature-pressure curve graph; Figure 9 Deep seawater time-temperature curve graph; Among them, in the figure: 1 - Pressure-resistant cabin; 2 - Experimental cabin; 3 - Outer shell of the experimental cabin; 4 - Upper cover of the experimental cabin; 5 - Control panel; 6 - Heat exchanger tube; 7 - Refrigeration device; 8 - Aluminum alloy outer shell; 9 - Upper end cover; 10 - Base; 11 - Joint; 12 - Inlet and outlet pipeline; 13 - High-pressure ball valve; 14 - Pressure and temperature sensor; 15 - O-ring seal. Specific implementation manners
[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0022] Please refer to the attached Figures 1-9, the present invention provides an experimental device for simulating the deep - sea environment, including: a pressure - resistant cabin 1, an experimental cabin 2, a control panel 5, a heat - exchanger pipe 6, and a refrigeration device 7. The control panel 5 is arranged on the experimental cabin 2. Inside the experimental cabin 2, there are a pressure - resistant cabin 1, a heat - exchanger pipe 6, and a refrigeration device 7. The experimental cabin 2 isolates the pressure - resistant cabin 1 from the heat - exchanger pipe 6 and the refrigeration device 7 through a heat - insulating board. The heat - exchanger pipe 6 surrounds the pressure - resistant cabin 1 on all sides. The refrigeration device 7 is connected to the heat - exchanger pipe 6 through a pipeline, and the refrigeration device 7 is electrically connected to the control panel 5 respectively.
[0023] The heat - exchanger pipe 6 can simulate the heat - exchange process in the deep - sea environment through the circulating heat - exchange medium, and study the influence of heat - exchange on the airtight pressure - maintaining cabin. The refrigeration device 7 is used to cooperate with the heat - exchanger pipe 6 to adjust the temperature of the experimental cabin 2, and can comprehensively simulate various complex deep - sea environmental factors.
[0024] Preferably, the pressure - resistant cabin 1 includes: an aluminum - alloy outer shell 8, an upper end - cover 9, a base 10, a joint 11, an inlet - outlet pipeline 12, a high - pressure ball valve 13, a pressure and temperature sensor 14, and an O - ring 15. The O - ring 15 is arranged at the inner groove of the aluminum - alloy outer shell 8. Both the upper end - cover 9 and the base 10 are clamped to the inner groove of the aluminum - alloy outer shell 8 through buckles. Above the upper end - cover 9, there are a pressure and temperature sensor 14 and an inlet - outlet pipeline 12. The pressure and temperature sensor 14 is located on one side of the inlet - outlet pipeline 12. The pressure and temperature sensor 14 is communicatively connected to the control panel 5. At the connection of the inlet - outlet pipeline 12 and the upper end - cover 9, there is a joint 11. The joint 11 is threadedly connected to the upper end - cover 9. The inlet - outlet pipeline 12 is fixedly connected above the joint 11. A high - pressure ball valve 13 is also installed on the inlet - outlet pipeline 12. The inlet - outlet pipeline 12 is externally connected to a high - precision pressurizing device. An O - ring 15 is arranged at the connection of the joint 11. When it is necessary to increase the pressure inside the pressure - resistant cabin 1, the high - pressure ball valve 13 is opened, and the press injects the medium; when the pressure is too high, the ball valve is partially opened to release the excess pressure, realizing the precise and stable control of the pressure, ensuring that the simulated deep - sea high - pressure environment meets the experimental requirements. The joint 11 adopts a special pressure - resistant and sealed joint 11, whose material is the same as the main body of the pressure - resistant cabin 1, which can stably connect the external pressure - medium supply device, ensuring the stable transmission of the pressure medium and the accurate transmission of the signal.
[0025] Preferably, the aluminum alloy housing 8, upper end cover 9, base 10, and joint 11 are all made of high-strength aluminum alloy 7075T6 material and are subjected to surface anodizing treatment. The aluminum alloy housing 8 is made of high-strength aluminum alloy 7075T6 material and is subjected to surface anodizing treatment. After anodization, this material can withstand deep-sea high pressure and has good seawater corrosion resistance. The thickness of the aluminum alloy housing 8 is accurately calculated and designed based on the maximum deep-sea pressure to be simulated to ensure structural integrity under extreme pressure.
[0026] Preferably, the pressure and temperature sensor 14 adopts a high-precision and high-sensitivity sensor. By using a high-precision pressure and temperature sensor 14, the subtle changes in the temperature and pressure inside the pressure-resistant cabin 1 can be monitored in real time and accurately, obtaining detailed and accurate experimental data, providing strong data support for in-depth analysis of the influencing factors of the airtight pressure-holding cabin performance.
[0027] Preferably, the experimental cabin 2 includes: an experimental cabin housing 3 and an experimental cabin upper cover 4. One end of the experimental cabin upper cover 4 is hinged to the experimental cabin housing 3.
[0028] The experimental cabin housing 3 is made of high-strength and lightweight carbon fiber composite material, which reduces the overall weight while ensuring structural strength, facilitating the installation and debugging of the device. One end of the experimental cabin upper cover 4 is hinged to the experimental cabin housing 3, which can be conveniently opened and closed for placing and removing the pressure-resistant cabin 1 to be tested.
[0029] Preferably, the O-ring 15 is made of fluororubber material with high pressure resistance, seawater corrosion resistance, and high and low temperature resistance to ensure the sealing between each cabin body, avoid pressure medium leakage during the experiment, and ensure the stability of the experimental environment.
[0030] The O-ring 15 is widely used in all key sealing parts. The O-ring 15 is installed at all pipe joints, equipment interfaces, etc. The cross-sectional size and hardness of the O-ring 15 are accurately selected according to the pressure and sealing requirements of different parts to ensure that all cabin bodies and connection parts of the device can maintain good sealing in a complex experimental environment, prevent pressure medium leakage, and ensure the accuracy and reliability of the experimental results.
[0031] Preferably, a sealing groove is provided on the contact surface between the experimental cabin housing 3 and the experimental cabin upper cover 4, and a sealing gasket is installed in the sealing groove to ensure the sealing between each cabin body, avoid pressure medium leakage during the experiment, and ensure the stability of the experimental environment.
[0032] Preferably, the heat exchanger tube 6 is made of a copper alloy with high pressure resistance, corrosion resistance, and good thermal conductivity. The layout of the space inside the experimental chamber 2 is compact and reasonable. The heat exchanger tube 6 is designed in a spiral shape to increase the heat exchange area. The heat exchange medium is driven to flow inside the tube by a circulation pump to precisely control the temperature change inside the experimental chamber 2 and simulate the temperature environment in different regions of the deep sea.
[0033] Preferably, the refrigeration device 7 is a high-pressure and high-precision rotary refrigeration device. The refrigeration device 7 is installed at the bottom of the experimental chamber 2. The temperature inside the experimental chamber 2 can be precisely adjusted through the heat exchanger tube 6 to ensure the stability of the experimental environment.
[0034] An experimental method for simulating the deep-sea environment (taking 1000 meters as an example) includes the following steps: Step 1: Pre-process the prefabricated components of the aluminum alloy shell 8, upper end cover 9, base 10, and joint 11, and perform anodic oxidation treatment on the above components to enhance their corrosion resistance and surface hardness; Step 2: Install an O-ring seal 15 at the connection between the upper end cover 9, base 10, joint 11 and the aluminum alloy shell 8, and then assemble the upper end cover 9, base 10 and the aluminum alloy shell 8 to ensure good sealing effect; Step 3: Install the pressure and temperature sensor 14 on the fixed threaded hole of the aluminum alloy shell 8, connect and install the high-pressure ball valve 13 through the joint 11, and complete the assembly and debugging of the pressure-resistant cabin 1 device; Step 4: Collect the experimental water quality sample, use the experimental chamber 2 to reduce its temperature to 2°C, and ensure that the temperature fluctuates within the range of ±0.1°C; Step 5: Open the high-pressure ball valve 13, add the cooled experimental water quality sample to the pressure-resistant cabin 1 in sequence, use a high-precision pressurizing device to stably pressurize the pressure inside the pressure-resistant cabin 1 to 10 MPa. After the pressurization is completed, ensure that there is no air inside the pressure-resistant cabin 1, and close the high-pressure ball valve 13 to ensure that the pressure fluctuates within the range of ±0.1 MPa; Step 6: Place the pressure-resistant cabin 1 inside the experimental chamber 2. After insulating for ten hours at 2°C, place the pressure-resistant cabin 1 in an environment with a temperature of 26.5°C and a fluctuation range of 26.3 - 26.7°C, and record the changes in the temperature and pressure inside the pressure-resistant cabin 1 as the temperature rises; Step 7: During the experiment, the pressure and temperature sensor 14 monitors the water temperature and pressure changes inside the pressure-resistant cabin 1 in real time, and the data acquisition system collects and records data at intervals of every thirty seconds; Step 8: Each experiment on each experimental water quality sample is repeated three or more times under the same conditions to obtain multiple sets of experimental data; Step 9: After the experiment, conduct a detailed comparative analysis of the collected data, observe the change trends and patterns of the temperature and pressure inside the pressure-resistant cabin 1 under different experimental water quality samples, so as to determine the key factors affecting the internal pressure change of the airtight pressure-holding cabin.
[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, combine, add, delete or make other adjustments to the features in the embodiments of the present invention according to the situation without creative efforts, so as to obtain different technical solutions that do not essentially depart from the concept of the present invention, and these technical solutions also belong to the scope of protection of the present invention.
Claims
1. An experimental device for simulating the deep - sea environment, characterized in that, Including: A pressure-resistant cabin (1), an experimental cabin (2), a control panel (5), a heat exchanger pipe (6), and a refrigeration device (7). A control panel (5) is provided on the experimental cabin (2). Inside the experimental cabin (2), there are a pressure-resistant cabin (1), a heat exchanger pipe (6), and a refrigeration device (7). The experimental cabin (2) isolates the pressure-resistant cabin (1) from the heat exchanger pipe (6) and the refrigeration device (7) through a heat-insulating board. The heat exchanger pipe (6) surrounds the pressure-resistant cabin (1) on all sides. The refrigeration device (7) is connected to the heat exchanger pipe (6) through a pipeline, and the refrigeration device (7) is electrically connected to the control panel (5).
2. The experimental device for simulating the deep-sea environment according to claim 1, wherein The pressure-resistant cabin (1) includes: an aluminum alloy outer shell (8), an upper end cover (9), a base (10), a joint (11), an inlet and outlet pipeline (12), a high-pressure ball valve (13), a pressure and temperature sensor (14), and an O-ring seal (15). An O-ring seal (15) is provided at the inner groove of the aluminum alloy outer shell (8). Both the upper end cover (9) and the base (10) are snap-fitted with the inner groove of the aluminum alloy outer shell (8). Above the upper end cover (9), there are a pressure and temperature sensor (14) and an inlet and outlet pipeline (12). The pressure and temperature sensor (14) is located on one side of the inlet and outlet pipeline (12). The pressure and temperature sensor (14) is communicatively connected to the control panel (5). At the connection of the inlet and outlet pipeline (12) and the upper end cover (9), there is a joint (11). The joint (11) is threadedly connected to the upper end cover (9). Above the joint (11), there is an inlet and outlet pipeline (12) fixedly connected. A high-pressure ball valve (13) is also installed on the inlet and outlet pipeline (12). The inlet and outlet pipeline (12) is externally connected to a high-precision pressurizing device. An O-ring seal (15) is provided at the connection of the joint (11).
3. The experimental device for simulating the deep-sea environment according to claim 2, wherein The aluminum alloy outer shell (8), the upper end cover (9), the base (10), and the joint (11) are all made of high-strength aluminum alloy 7075T6 material and are subjected to surface anodizing treatment.
4. An experimental device for simulating a deep-sea environment according to claim 2, wherein The pressure and temperature sensor (14) is a high-precision and high-sensitivity sensor.
5. An experimental device for simulating a deep - sea environment according to claim 2, characterized in that, The experimental cabin (2) includes: an experimental cabin outer shell (3) and an experimental cabin upper cover (4). One end of the experimental cabin upper cover (4) is hinged to the experimental cabin outer shell (3).
6. The experimental device for simulating the deep-sea environment according to claim 2, characterized in that, The O-ring seal (15) is made of fluororubber material that is resistant to high pressure, seawater corrosion, and high and low temperatures.
7. An experimental device for simulating a deep-sea environment according to claim 1, characterized in that, On the contact surface between the experimental cabin outer shell (3) and the experimental cabin upper cover (4), a sealing groove is provided, and a sealing washer is installed in the sealing groove.
8. An experimental device for simulating a deep-sea environment according to claim 1, characterized in that, The heat exchanger pipe (6) is made of copper alloy that is resistant to high pressure, corrosion, and has good heat conduction performance.
9. An experimental device for simulating a deep-sea environment according to claim 1, characterized in that, The refrigeration device (7) is a high-pressure and high-precision rotary refrigeration device.
10. An experimental method for simulating a deep - sea environment, characterized in that, Including the following steps: Step 1: Pre-process the prefabricated components of the aluminum alloy outer shell (8), the upper end cover (9), the base (10), and the joint (11), and perform anodizing treatment on the above components to enhance their corrosion resistance and surface hardness; Step 2: Install an O-ring seal (15) at the connection between the upper end cap (9), the base (10), the joint (11) and the aluminum alloy housing (8). Subsequently, assemble the upper end cap (9) and the base (10) with the aluminum alloy housing (8) to ensure good sealing performance; Step 3: Install the pressure and temperature sensor (14) on the fixed threaded hole of the aluminum alloy housing (8). Connect and install the high-pressure ball valve (13) through the joint (11) to complete the assembly and debugging of the pressure-resistant cabin (1) device; Step 4: Collect experimental water quality samples and use the experimental chamber (2) to reduce its temperature to 2°C, and ensure that the temperature fluctuates within the range of ±0.1°C; Step 5: Open the high-pressure ball valve (13), and sequentially add the cooled experimental water quality samples into the pressure-resistant cabin (1). Use a high-precision pressurization device to stably pressurize the pressure in the pressure-resistant cabin (1) to 10 MPa. After the pressurization is completed, ensure that there is no air in the pressure-resistant cabin (1), and close the high-pressure ball valve (13) to ensure that the pressure fluctuates within the range of ±0.1 MPa; Step 6: Place the pressure-resistant cabin (1) into the experimental chamber (2). After insulating for ten hours at 2°C, place the pressure-resistant cabin (1) in an environment with a temperature of 26.5°C and a fluctuation range of 26.3~26.7°C, and record the changes in the temperature and pressure inside the pressure-resistant cabin (1) as the temperature rises; Step 7: During the experiment, the pressure and temperature sensor (14) monitors the changes in the water temperature and pressure inside the pressure-resistant cabin (1) in real time. The data acquisition system collects and records data at intervals of every thirty seconds; Step 8: Each experiment on each experimental water quality sample under the same conditions is repeated more than three times to obtain multiple sets of experimental data; Step 9: After the experiment, conduct a detailed comparative analysis of the collected data, observe the change trends and laws of the temperature and pressure inside the pressure-resistant cabin (1) under different experimental water quality samples, so as to determine the key factors affecting the performance of the airtight pressure-holding cabin.