Underwater simulation overweight / weightlessness environment test device and test method

Abstract

The invention discloses an underwater simulation overweight / weightlessness environment test device and test method. The device comprises a cabin body mechanism, a liquid supply mechanism, a gas supply mechanism, a large water tank and a position detector, the position detector is used for detecting the position of the cabin body mechanism in the large water tank and sending position information to the control system; the control system is used for controlling the gas supply mechanism to inject or discharge compressed gas according to the position information provided by the position detector so as to change the volume of the cabin body mechanism; and / or the liquid supply mechanism is controlled to inject or discharge liquid to change the weight of the cabin body mechanism, the weight of the cabin body mechanism is changed through the liquid supply mechanism, so that the cabin body mechanism sinks downwards, the downward acceleration is achieved, and the whole main cabin body is in an overweight state; the volume of the cabin body mechanism is changed through the gas supply mechanism, so that buoyancy borne by the cabin body mechanism floats upwards, upward acceleration is achieved, and the whole main cabin body is in a weightless state.

Description

Technical Field

[0001] The present application belongs to the field of aerospace environment simulation technology, and specifically relates to an underwater simulated overweight / weightlessness environment test device and test method. Background Art

[0002] Manned space flight is one of the most complex system engineering projects in human history. Its development depends on the development of the entire scientific and technological level. At the same time, it also affects the development of the entire modern science and technology field, and puts forward new development requirements for various fields of modern science and technology, thus promoting and driving the development of the entire science and technology.

[0003] However, when astronauts perform space missions, they will encounter weightlessness and overweight. These weightless or overweight environments will bring various difficulties to astronauts. After space flight, astronauts' cardiovascular regulation function will be disturbed, that is, overweight tolerance, standing tolerance, and exercise tolerance will decrease, which will manifest as syncope, reduced exercise ability, and inability to tolerate training, etc., which will have a significant impact on the astronauts' physical health. The current devices that simulate space weightlessness and overweight use the tension of springs and cables or the air floating of the device during jets to simulate weightlessness and overweight. The acceleration is not stable and difficult to adjust, and there are not many protective measures around the device, which is easy to deflect and cause safety hazards.

[0004] Application Contents

[0005] In order to overcome the above-mentioned deficiencies of the prior art, the present application proposes an underwater simulated overweight / weightlessness environment test device, comprising: a cabin mechanism, a liquid supply mechanism, a gas supply mechanism, a large water tank 5 and a position detector;

[0006] The cabin mechanism is arranged inside the large water tank 5, the liquid supply mechanism and the gas supply mechanism are connected to the cabin mechanism respectively, and the liquid supply mechanism and the gas supply mechanism are arranged outside the large water tank 5, a plurality of position detectors are provided, and the plurality of position detectors are respectively arranged on the cabin mechanism and the large water tank 5, a control system is arranged inside the cabin mechanism, and the control system is communicatively connected with the liquid supply mechanism and the gas supply mechanism;

[0007] The position detector is used to detect the position of the cabin mechanism in the large water tank 5 and send the position information to the control system;

[0008] The control system is used to: control the gas supply mechanism to inject or discharge compressed gas to change the volume of the cabin mechanism according to the position information provided by the position detector; and / or control the liquid supply mechanism to inject or discharge liquid to change the weight of the cabin mechanism.

[0009] Preferably, the position detector comprises: sensor one 12, sensor two 17 and sensor three 20;

[0010] The sensor 1 12 and the sensor 2 17 are arranged in sequence from top to bottom in the large water tank 5 in the vertical direction, and the sensor 3 20 is arranged on the cabin structure.

[0011] Preferably, the cabin structure comprises: a main cabin 21, a gas expansion assembly, a counterweight chamber 11 and a cabin control chamber 10;

[0012] The cockpit control room 10 is installed inside the main cabin 21, the control system is arranged in the cockpit control room 10, the main cabin 21 is arranged inside the large water tank 5, the gas expansion assembly is arranged at the bottom of the main cabin 21, the gas expansion assembly is connected to the gas supply mechanism, the counterweight chamber 11 is arranged outside the main cabin 21, and the counterweight chamber 11 is connected to the liquid supply mechanism;

[0013] The sensor 3 20 is installed on the outside of the main cabin 21 .

[0014] Preferably, a cabin entrance and exit 9 is provided at the connection between the cabin control room 10 and the main cabin body 21, and the cabin entrance and exit 9 connects the external space and the cabin control room 10. A corresponding sealing plate is provided on the cabin entrance and exit 9, and the sealing plate is used to seal or open the cabin entrance and exit 9.

[0015] Preferably, the gas expansion assembly comprises: an air cabin 7 and a compressed air bag 8 which are connected to each other, the air cabin 7 is installed at the bottom of the main cabin body 21, the compressed air bag 8 is connected to the bottom of the air cabin 7, and the gas supply mechanism is connected to the air cabin 7.

[0016] Preferably, the gas supply mechanism includes: an air compressor 1, an air inlet pipe 2 and an air outlet pipe 4; one end of the air inlet pipe 2 is connected to the air compressor 1, and the other end is connected to the air cabin 7; one end of the air outlet pipe 4 is connected to the air cabin 7, and the other end extends outward to the outside of the large water tank 5 and is connected to the external atmospheric environment.

[0017] Preferably, the liquid supply mechanism includes: a liquid supply pipe 14, a liquid outlet pipe 15 and a liquid tank 16; one end of the liquid supply pipe 14 and the liquid outlet pipe 15 are respectively connected to the liquid tank 16, and the other end of the liquid supply pipe 14 and the liquid outlet pipe 15 are respectively connected to the counterweight chamber 11.

[0018] Preferably, the liquid in the liquid tank 16 is mercury liquid.

[0019] Preferably, a limit assembly is provided in the large water tank 5, and the sensor 1 12 and the sensor 2 17 are installed on the limit assembly in sequence from top to bottom in the vertical direction, and the limit assembly includes: a column 1 6, a column 2 19, a column 3 22, a column 4 23 and a pressure baffle 18;

[0020] The column 1 6, column 2 19, column 3 22 and column 4 23 are respectively vertically fixed to the bottom of the large water tank 5, the cabin mechanism is clamped between the column 1 6, column 2 19, column 3 22 and column 4 23, the pressure baffle 18 is parallel to the bottom surface of the large water tank 5, and the pressure baffle 18 is movably installed between the column 1 6, column 2 19, column 3 22 and column 4 23;

[0021] When the cabin mechanism is located at the position of sensor 12, the pressure baffle 18 is closed and supported at the bottom of the cabin mechanism;

[0022] When the cabin body mechanism sinks toward the position of the second sensor 17, the pressure baffle 18 opens to allow the cabin body mechanism to sink.

[0023] Based on the same application concept, this application also provides an underwater simulated overweight / weightlessness environment test method, including:

[0024] When the position detector detects that the cabin mechanism is floating in the large water tank 5, the control system controls the liquid supply mechanism to inject liquid into the cabin mechanism according to the position information provided by the position detector, thereby increasing the weight of the cabin mechanism and causing the cabin mechanism to sink to simulate a weightless environment;

[0025] When the position detector detects that the cabin mechanism is sunk in the large water tank 5, the control system controls the gas supply mechanism to inject gas into the cabin mechanism according to the position information provided by the position detector to increase the volume of the cabin mechanism, and at the same time, the liquid in the cabin mechanism is discharged back to the liquid supply mechanism to change the weight of the cabin mechanism, so that the cabin mechanism performs a floating movement to simulate an overweight environment;

[0026] Among them, the underwater simulated overweight / weightlessness environment test device is the underwater simulated overweight / weightlessness environment test device as described above.

[0027] Preferably, when the position detector detects that the cabin mechanism floats in the large water tank 5, the control system controls the liquid supply mechanism to inject liquid into the cabin mechanism according to the position information provided by the position detector, thereby increasing the weight of the cabin mechanism and causing the cabin mechanism to sink to simulate a weightless environment, including:

[0028] When sensor three 20 is located at sensor one 12, the cabin body floats in the large water tank 5, and the control system controls the liquid tank 16 to open according to the position information provided by the sensor three 20 and the sensor one 12, and injects mercury into the counterweight chamber 11 through the liquid supply pipe 14 to increase the weight of the main cabin body, and the pressure baffle 18 opens, and the main cabin body 21 sinks in the vertical direction along the column one 6, the column two 19, the column three 22, and the column four 24 to simulate a weightless environment; when the sensor three 20 reaches the position of the sensor two 17, the control system controls the liquid tank 16 to stop the continuous injection of mercury.

[0029] Preferably, when the position detector detects that the cabin mechanism is sunk in the large water tank 5, the control system controls the gas supply mechanism to inject gas into the cabin mechanism according to the position information provided by the position detector to increase the volume of the cabin mechanism, and at the same time, the liquid in the cabin mechanism is discharged back to the liquid supply mechanism to change the weight of the cabin mechanism, so that the cabin mechanism performs a floating movement to simulate an overweight environment, including:

[0030] When sensor three 20 of the main cabin is at the position of sensor two 17, the cabin body sinks in the large water tank 5, and the control system controls the air compressor 1 to start according to the position information provided by the sensor three 20 and the sensor two 17, and inputs the compressed air into the air cabin 7 through the air inlet pipe 2, thereby driving the volume of the air bag 8 to expand, so that the volume of the main cabin changes, and then changes the buoyancy of the main cabin 21; at the same time, the control system controls the liquid tank 16 to discharge the mercury in the counterweight chamber 11 through the liquid outlet pipe 15 and flow it back into the liquid tank 16, thereby changing the mass of the main cabin 21. At this time, the main cabin 21 will perform a vertical upward floating movement along column one 6, column two 19, column three 22, and column four 24 to simulate an overweight environment; when sensor three 20 reaches the position of sensor one 12, the control system controls the air compressor 1 to stop injecting compressed air.

[0031] Compared with the closest prior art, the present application has the following beneficial effects:

[0032] An underwater simulated overweight / weightless environment test device, characterized in that it comprises: a cabin mechanism, a liquid supply mechanism, a gas supply mechanism, a large water tank 5 and a position detector; the cabin mechanism is arranged inside the large water tank 5, the liquid supply mechanism and the gas supply mechanism are respectively connected to the cabin mechanism, and the liquid supply mechanism and the gas supply mechanism are both arranged outside the large water tank 5, a plurality of the position detectors are provided, and the plurality of the position detectors are respectively arranged on the cabin mechanism and the large water tank 5, a control system is provided in the cabin mechanism, and the control system is communicatively connected with the liquid supply mechanism and the gas supply mechanism; the position detector is used to The invention is to: detect the position of the cabin mechanism in the large water tank 5 and send the position information to the control system; the control system is used to: control the gas supply mechanism to inject or discharge compressed gas to change the volume of the cabin mechanism according to the position information provided by the position detector; and / or control the liquid supply mechanism to inject or discharge liquid to change the weight of the cabin mechanism; change the weight of the cabin mechanism by the liquid supply mechanism so that the cabin mechanism sinks downward with a downward acceleration, so that the entire main cabin is in an overweight state; change the volume of the cabin mechanism by the gas supply mechanism so that the buoyancy of the cabin mechanism floats upward with an upward acceleration, so that the entire main cabin is in a weightless state. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A plan view of an underwater simulated overweight / weightless environment test device provided for this application;

[0034] Figure 2 A top view of the main cabin of an underwater simulated overweight / weightlessness environment test device provided in this application;

[0035] Figure 3 A rear view of the external system of an underwater simulated overweight / weightlessness environment test device provided in this application;

[0036] Figure 4 A schematic diagram of a flow chart of an underwater simulated overweight / weightlessness environment test method provided by the present invention;

[0037] Among them, 1-air compressor, 2-air inlet pipe, 3-water inlet, 4-air outlet pipe, 5-large water tank, 6-column one, 7-air cabin, 8-compression air bag, 9-cabin entrance and exit, 10-cabin control room, 11-counterweight room, 12-sensor one, 13-stairs, 14-liquid supply pipe, 15-liquid outlet pipe, 16-liquid tank, 17-sensor two, 18-pressure baffle, 19-column two, 20-sensor three, 21-main cabin, 22-column three, 23-column four. DETAILED DESCRIPTION

[0038] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings.

[0039] Embodiment 1:

[0040] The present application provides a method of utilizing the buoyancy principle to simulate weightlessness and overweight environments, thereby conducting space environment adaptability training for internal astronauts.

[0041] To achieve the above purpose, this application provides Figure 1 An underwater simulated overweight / weightless environment test device is shown, comprising: a cabin mechanism, a liquid supply mechanism, a gas supply mechanism, a large water tank 5 and a position detector;

[0042] The cabin mechanism is arranged inside the large water tank 5, the liquid supply mechanism and the gas supply mechanism are connected to the cabin mechanism respectively, and the liquid supply mechanism and the gas supply mechanism are arranged outside the large water tank 5, a plurality of position detectors are provided, and the plurality of position detectors are respectively arranged on the cabin mechanism and the large water tank 5, a control system is arranged inside the cabin mechanism, and the control system is communicatively connected with the liquid supply mechanism and the gas supply mechanism;

[0043] The position detector is used to detect the position of the cabin mechanism in the large water tank 5 and send the position information to the control system;

[0044] The control system is used to: control the gas supply mechanism to inject or discharge compressed gas to change the volume of the cabin mechanism according to the position information provided by the position detector; and / or control the liquid supply mechanism to inject or discharge liquid to change the weight of the cabin mechanism.

[0045] The device changes the weight of the cabin mechanism through a liquid supply mechanism so that the cabin mechanism sinks downward with a downward acceleration, thereby the entire main cabin is in an overweight state; and changes the volume of the cabin mechanism through a gas supply mechanism so that the buoyancy force exerted on the cabin mechanism causes it to float upward with an upward acceleration, thereby the entire main cabin is in a weightless state.

[0046] Preferably, the position detector comprises: sensor one 12, sensor two 17 and sensor three 20;

[0047] The sensor 1 12 and the sensor 2 17 are arranged in sequence from top to bottom in the large water tank 5 in the vertical direction, and the sensor 3 20 is arranged on the cabin structure.

[0048] A water inlet 3 is provided on one side of the large water tank 5, and the water inlet 3 is used to add water into the large water tank 5 so that the cabin structure can float on the water surface or be completely immersed in the water.

[0049] Sensor 1 12 and sensor 2 17 are used to detect the position of the cabin mechanism and thus control the input and output of the liquid supply mechanism and the gas supply mechanism in the supply system; sensor 3 20 is used to determine the position of the cabin mechanism itself and compares it with sensor 1 12 and sensor 2 17 when determining the position.

[0050] like Figure 2 As shown, preferably, the cabin structure includes: a main cabin 21, a gas expansion assembly, a counterweight chamber 11 and a cabin control chamber 10;

[0051] The cockpit control room 10 is installed inside the main cabin 21, the control system is arranged in the cockpit control room 10, the main cabin 21 is arranged inside the large water tank 5, the gas expansion assembly is arranged at the bottom of the main cabin 21, the gas expansion assembly is connected to the gas supply mechanism, the counterweight chamber 11 is arranged outside the main cabin 21, and the counterweight chamber 11 is connected to the liquid supply mechanism;

[0052] The sensor 3 20 is installed on the outside of the main cabin 21 .

[0053] The gas supply mechanism inputs or outputs compressed gas to the gas expansion component, thereby changing the overall volume of the cabin mechanism to achieve floating or sinking operations in the water. The liquid supply mechanism is used to input or output liquid to the counterweight chamber 11, so that the overall mass of the cabin mechanism changes and sinks or floats in the water, thereby changing the weightlessness or overweight situation. A control system is provided in the cabin control room 10, through which the gas supply mechanism is injected or discharged with compressed gas to change the volume of the cabin mechanism; and / or the liquid supply mechanism is controlled to inject or discharge liquid to change the weight of the cabin mechanism for testing.

[0054] Preferably, a cabin entrance and exit 9 is provided at the connection between the cabin control room 10 and the main cabin body 21, and the cabin entrance and exit 9 connects the external space and the cabin control room 10. A corresponding sealing plate is provided on the cabin entrance and exit 9, and the sealing plate is used to seal or open the cabin entrance and exit 9.

[0055] The test personnel enter the cockpit control room 10 from the cockpit entrance 9 via the stairs 13, and the cockpit control room 10 can control the entire device.

[0056] Preferably, the gas expansion assembly comprises: an air cabin 7 and a compressed air bag 8 which are connected to each other, the air cabin 7 is installed at the bottom of the main cabin body 21, the compressed air bag 8 is connected to the bottom of the air cabin 7, and the gas supply mechanism is connected to the air cabin 7.

[0057] The compressed airbag 8 is located at the bottom of the main cabin 21. By injecting and discharging compressed gas, the airbag 8 expands to change the volume of the entire main cabin 21, thereby changing the buoyancy of the main cabin 21, that is, F 浮 =ρgV 排 Among them, F 浮 is the buoyancy received by the main cabin 21, ρ is the density of the liquid in the large water tank 5, g is the acceleration due to gravity, V 排 It is the volume of liquid displaced by the object.

[0058] Preferably, the gas supply mechanism includes: an air compressor 1, an air inlet pipe 2 and an air outlet pipe 4; one end of the air inlet pipe 2 is connected to the air compressor 1, and the other end is connected to the air cabin 7; one end of the air outlet pipe 4 is connected to the air cabin 7, and the other end extends outward to the outside of the large water tank 5 and is connected to the external atmospheric environment.

[0059] The air inlet pipe 2 and the air outlet pipe 4 are flexible pipes, which are long enough to move along with the movement of the main cabin body 21 .

[0060] Preferably, the liquid supply mechanism includes: a liquid supply pipe 14, a liquid outlet pipe 15 and a liquid tank 16; one end of the liquid supply pipe 14 and the liquid outlet pipe 15 are respectively connected to the liquid tank 16, and the other end of the liquid supply pipe 14 and the liquid outlet pipe 15 are respectively connected to the counterweight chamber 11.

[0061] Preferably, the liquid in the liquid tank 16 is mercury liquid.

[0062] The liquid tank 16 fills mercury into the counterweight chamber 11 through the liquid supply pipe 14 to increase the weight of the main cabin. When the total weight M of the main cabin 21 and the control chamber reaches a certain value, that is, Wherein, G is the total weight of the main cabin 21 and the counterweight chamber 11, and F 浮 is the buoyancy of the main cabin 21, F 阻 is the resistance force on the main cabin 21, and g is the acceleration due to gravity.

[0063] The liquid supply pipe 14 and the liquid outlet pipe 15 are flexible pipes, and are long enough to move along with the movement of the main cabin 21 .

[0064] like Figure 3 As shown, a limit assembly is provided in the large water tank 5, and the sensor 1 12 and the sensor 2 17 are installed on the limit assembly in sequence from top to bottom in the vertical direction, and the limit assembly includes: a column 1 6, a column 2 19, a column 3 22, a column 4 23 and a pressure baffle 18;

[0065] The column 1 6, column 2 19, column 3 22 and column 4 23 are respectively vertically fixed to the bottom of the large water tank 5, the cabin mechanism is clamped between the column 1 6, column 2 19, column 3 22 and column 4 23, the pressure baffle 18 is parallel to the bottom surface of the large water tank 5, and the pressure baffle 18 is movably installed between the column 1 6, column 2 19, column 3 22 and column 4 23;

[0066] When the cabin mechanism is located at the position of sensor 12, the pressure baffle 18 is closed and supported at the bottom of the cabin mechanism;

[0067] When the cabin body mechanism sinks toward the position of the second sensor 17, the pressure baffle 18 opens to allow the cabin body mechanism to sink.

[0068] Column 1 6, column 2 19, column 3 22, and column 4 23 enable the main cabin 21 to float up and sink in the vertical direction.

[0069] Embodiment 2:

[0070] The underwater simulated overweight / weightlessness environment test method described in this application is as follows Figure 4 As shown, including:

[0071] When the position detector detects that the cabin mechanism is floating in the large water tank 5, the control system controls the liquid supply mechanism to inject liquid into the cabin mechanism according to the position information provided by the position detector, thereby increasing the weight of the cabin mechanism and causing the cabin mechanism to sink to simulate a weightless environment;

[0072] When the position detector detects that the cabin mechanism is sunk in the large water tank 5, the control system controls the gas supply mechanism to inject gas into the cabin mechanism according to the position information provided by the position detector to increase the volume of the cabin mechanism, and at the same time, the liquid in the cabin mechanism is discharged back to the liquid supply mechanism to change the weight of the cabin mechanism, so that the cabin mechanism performs a floating movement to simulate an overweight environment;

[0073] Among them, the underwater simulated overweight / weightlessness environment test device is the underwater simulated overweight / weightlessness environment test device as described above.

[0074] Preferably, when the position detector detects that the cabin mechanism floats in the large water tank 5, the control system controls the liquid supply mechanism to inject liquid into the cabin mechanism according to the position information provided by the position detector, thereby increasing the weight of the cabin mechanism and causing the cabin mechanism to sink to simulate a weightless environment, including:

[0075] When sensor three 20 is located at sensor one 12, the cabin body floats in the large water tank 5, and the control system controls the liquid tank 16 to open according to the position information provided by the sensor three 20 and the sensor one 12, and injects mercury into the counterweight chamber 11 through the liquid supply pipe 14 to increase the weight of the main cabin body, and the pressure baffle 18 opens, and the main cabin body 21 sinks in the vertical direction along the column one 6, the column two 19, the column three 22, and the column four 24 to simulate a weightless environment; when the sensor three 20 reaches the position of the sensor two 17, the control system controls the liquid tank 16 to stop the continuous injection of mercury.

[0076] Preferably, when the position detector detects that the cabin mechanism is sunk in the large water tank 5, the control system controls the gas supply mechanism to inject gas into the cabin mechanism according to the position information provided by the position detector to increase the volume of the cabin mechanism, and at the same time, the liquid in the cabin mechanism is discharged back to the liquid supply mechanism to change the weight of the cabin mechanism, so that the cabin mechanism performs a floating movement to simulate an overweight environment, including:

[0077] When sensor three 20 of the main cabin is at the position of sensor two 17, the cabin body sinks in the large water tank 5, and the control system controls the air compressor 1 to start according to the position information provided by the sensor three 20 and the sensor two 17, and inputs the compressed air into the air cabin 7 through the air inlet pipe 2, thereby driving the volume of the air bag 8 to expand, so that the volume of the main cabin changes, and then changes the buoyancy of the main cabin 21; at the same time, the control system controls the liquid tank 16 to discharge the mercury in the counterweight chamber 11 through the liquid outlet pipe 15 and flow it back into the liquid tank 16, thereby changing the mass of the main cabin 21. At this time, the main cabin 21 will perform a vertical upward floating movement along column one 6, column two 19, column three 22, and column four 24 to simulate an overweight environment; when sensor three 20 reaches the position of sensor one 12, the control system controls the air compressor 1 to stop injecting compressed air.

[0078] The test personnel enter the cockpit control room 10 from the cockpit entrance 9 via the stairs 13, and the cockpit control room 10 can control the entire device.

[0079] Start the whole device. When the sensor 3 20 is located at the sensor 1 12 for the first time, the liquid tank 16 fills mercury into the counterweight chamber 11 through the liquid supply pipe 14 to increase the weight of the main cabin 21. When the total weight M of the main cabin 21 and the control chamber reaches a certain value, that is, Where G is the total weight of the main cabin 21 and the counterweight chamber 11, F 浮 is the buoyancy of the main cabin 21, F 阻The resistance of the main cabin 21, g is the acceleration of gravity, the pressure baffle 18 will open, and the main cabin will sink vertically along the column 1 6, the column 2 19, the column 3 22, and the column 4 23. At this time, the main cabin 21 will have a downward acceleration greater than the acceleration of gravity g, thereby simulating a weightless environment. In this process, mercury will continue to be input from the liquid supply pipe 14 to the counterweight chamber 11 until the sensor 3 20 reaches the position of the sensor 2 17, and the mercury supply stops.

[0080] When the sensor 3 20 of the main cabin 21 is located at the position of the sensor 2 17, the air compressor 1 inputs the compressed air into the air cabin 7 through the air inlet pipe 2, thereby driving the volume of the compressed air bag 8 to expand, so that the volume of the main cabin 21 changes, thereby changing the buoyancy of the main cabin 21, that is, F 浮 =ρgV 排 , where F 浮 is the buoyancy received by the main cabin 21, ρ is the density of the liquid in the large water tank 5, g is the acceleration due to gravity, V 排 is the volume of the liquid displaced by the object; at the same time, the mercury flows from the counterweight chamber 11 through the liquid outlet pipe 15 back to the liquid tank 16, thereby changing the mass M of the main cabin. At this time, the main cabin will float up along the column 1 6, the column 2 19, the column 3 22, and the column 4 23 in the vertical direction. At this time, the main cabin 21 will have an upward acceleration a, that is, the acceleration Where a is the acceleration of the main cabin 21, G is the total weight of the main cabin 21 and the counterweight chamber 11, and F is 浮 is the buoyancy of the main cabin 21, F 阻 is the resistance of the main cabin 21, and g is the acceleration of gravity, thereby simulating an overweight environment. In this process, mercury will continue to flow out of the counterweight chamber 11 from the liquid outlet pipe 15 and flow back to the liquid tank 16, and compressed gas will continue to be filled into the air cabin 7 from the air compressor 1 until the main cabin 21 reaches the sensor 12.

[0081] When the main cabin body 21 floats to the position where sensor three 20 is located for the second time at sensor one 12, the air compressor 1 stops supplying compressed air to the air cabin 7, and the compressed air in the air cabin 7 is discharged into the atmosphere from the air outlet pipe 4 until it is exhausted. The volume of the compressed air bag 8 returns to its original state, the pressure baffle 18 is retracted, and the counterweight chamber 11 will completely discharge the mercury therein into the mercury tank.

[0082] The entire device is shut down, and the test personnel leave their seats, leave the cockpit control room 10 through the cockpit entrance 9, and evacuate safely from the entire device.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application rather than to limit its protection scope. Although the present application has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the present application, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the application, but these changes, modifications or equivalent substitutions are all within the protection scope of the claims to be approved.

Claims

1. An underwater simulated overweight / weightlessness environment test device, characterized in that: include: Cabin mechanism, liquid supply mechanism, gas supply mechanism, large water tank (5) and position detector; The cabin mechanism is arranged inside the large water tank (5), the liquid supply mechanism and the gas supply mechanism are respectively connected to the cabin mechanism, and the liquid supply mechanism and the gas supply mechanism are both arranged outside the large water tank (5), a plurality of position detectors are provided, and the plurality of position detectors are respectively arranged on the cabin mechanism and the large water tank (5), a control system is provided inside the cabin mechanism, and the control system is communicatively connected with the liquid supply mechanism and the gas supply mechanism; The position detector is used to detect the position of the cabin mechanism in the large water tank (5) and send the position information to the control system; The control system is used to: control the gas supply mechanism to inject or discharge compressed gas to change the volume of the cabin mechanism according to the position information provided by the position detector; and / or control the liquid supply mechanism to inject or discharge liquid to change the weight of the cabin mechanism.

2. The device according to claim 1, characterized in that The position detector comprises: sensor one (12), sensor two (17) and sensor three (20); The sensor 1 (12) and the sensor 2 (17) are arranged in sequence from top to bottom in the large water tank (5) in the vertical direction, and the sensor 3 (20) is arranged on the cabin structure.

3. The device according to claim 2, characterized in that The cabin structure comprises: a main cabin (21), a gas expansion assembly, a counterweight chamber (11) and a cabin control chamber (10); The cockpit control room (10) is installed inside the main cabin (21), the control system is arranged in the cockpit control room (10), the main cabin (21) is arranged inside the large water tank (5), the gas expansion assembly is arranged at the bottom of the main cabin (21), the gas expansion assembly is connected to the gas supply mechanism, the counterweight chamber (11) is arranged outside the main cabin (21), and the counterweight chamber (11) is connected to the liquid supply mechanism; The sensor three (20) is installed on the outside of the main cabin (21).

4. The device according to claim 3, characterized in that A cabin access (9) is provided at the connection between the cabin control room (10) and the main cabin body (21), and the cabin access (9) connects the external space and the cabin control room (10). A corresponding sealing plate is provided on the cabin access (9), and the sealing plate is used to seal or open the cabin access (9).

5. The device according to claim 3, characterized in that The gas expansion assembly comprises: an air chamber (7) and a compressed air bag (8) which are connected to each other, wherein the air chamber (7) is installed at the bottom of the main chamber body (21), the compressed air bag (8) is connected to the bottom of the air chamber (7), and the gas supply mechanism is connected to the air chamber (7).

6. The device according to claim 5, characterized in that The gas supply mechanism comprises: an air compressor (1), an air inlet pipe (2) and an air outlet pipe (4); one end of the air inlet pipe (2) is connected to the air compressor (1), and the other end is connected to the air cabin (7); one end of the air outlet pipe (4) is connected to the air cabin (7), and the other end extends outward to the outside of the large water tank (5) and is connected to the external atmospheric environment.

7. The device according to claim 5, characterized in that The liquid supply mechanism comprises: a liquid supply pipe (14), a liquid outlet pipe (15) and a liquid tank (16); one end of the liquid supply pipe (14) and the liquid outlet pipe (15) are respectively connected to the liquid tank (16), and the other ends of the liquid supply pipe (14) and the liquid outlet pipe (15) are respectively connected to the counterweight chamber (11).

8. The device according to claim 5, characterized in that The liquid in the liquid tank (16) is mercury liquid.

9. The device according to claim 2, characterized in that A limit assembly is provided in the large water tank (5), and the sensor 1 (12) and the sensor 2 (17) are installed on the limit assembly in sequence from top to bottom in the vertical direction. The limit assembly includes: a column 1 (6), a column 2 (19), a column 3 (22), a column 4 (23) and a pressure baffle (18); The column one (6), column two (19), column three (22) and column four (23) are respectively vertically fixed to the bottom of the large water tank (5); the cabin mechanism is clamped between the column one (6), column two (19), column three (22) and column four (23); the pressure baffle plate (18) is parallel to the bottom surface of the large water tank (5); the pressure baffle plate (18) is movably installed between the column one (6), column two (19), column three (22) and column four (23); When the cabin body structure is located at the position of sensor 1 (12), the pressure baffle (18) is closed and supported at the bottom of the cabin body structure; When the cabin body structure sinks toward the position of the second sensor (17), the pressure baffle (18) opens to allow the cabin body structure to sink.

10. An underwater simulated overweight / weightlessness environment test method, characterized in that: include: When the position detector detects that the cabin mechanism is floating in the large water tank (5), the control system controls the liquid supply mechanism to inject liquid into the cabin mechanism according to the position information provided by the position detector, thereby increasing the weight of the cabin mechanism and causing the cabin mechanism to sink to simulate a weightless environment; When the position detector detects that the cabin mechanism is sunk in the large water tank (5), the control system controls the gas supply mechanism to inject gas into the cabin mechanism according to the position information provided by the position detector, thereby increasing the volume of the cabin mechanism, and at the same time, the liquid in the cabin mechanism is discharged back into the liquid supply mechanism to change the weight of the cabin mechanism, so that the cabin mechanism performs a floating movement to simulate an overweight environment; Wherein, the underwater simulated overweight / weightlessness environment test device is an underwater simulated overweight / weightlessness environment test device as described in any one of claims 1-9.

11. The method according to claim 10, characterized in that When the position detector detects that the cabin mechanism is floating in the large water tank (5), the control system controls the liquid supply mechanism to inject liquid into the cabin mechanism according to the position information provided by the position detector, thereby increasing the weight of the cabin mechanism and causing the cabin mechanism to sink to simulate a weightless environment, including: When sensor three (20) is located at sensor one (12), the cabin body floats in the large water tank (5), and the control system controls the liquid tank (16) to open according to the position information provided by sensor three (20) and sensor one (12), injects mercury into the counterweight chamber (11) through the liquid supply pipe (14) to increase the weight of the main cabin body, and the pressure baffle (18) opens, and the main cabin body (21) sinks vertically along column one (6), column two (19), column three (22), and column four (24) to simulate a weightless environment; when sensor three (20) reaches the position of sensor two (17), the control system controls the liquid tank (16) to stop the continuous injection of mercury.

12. The method according to claim 10, characterized in that When the position detector detects that the cabin mechanism is sunk in the large water tank (5), the control system controls the gas supply mechanism to inject gas into the cabin mechanism according to the position information provided by the position detector, thereby increasing the volume of the cabin mechanism, and at the same time, the liquid in the cabin mechanism is discharged back to the liquid supply mechanism to change the weight of the cabin mechanism, so that the cabin mechanism performs a floating movement to simulate an overweight environment, including: When the sensor three (20) of the main cabin is located at the position of the sensor two (17), the cabin body is sunk in the large water tank (5). The control system controls the air compressor (1) to start according to the position information provided by the sensor three (20) and the sensor two (17), and inputs the compressed air into the air cabin (7) through the air inlet pipe (2), thereby driving the volume of the air bag (8) to expand, so that the volume of the main cabin changes, thereby changing the buoyancy of the main cabin (21); at the same time, the control system controls the liquid tank (16) to discharge the mercury in the counterweight chamber (11) through the liquid outlet pipe (15) and flow it back into the liquid tank (16), thereby changing the mass of the main cabin (21). At this time, the main cabin (21) will perform a vertical upward floating movement along the column one (6), the column two (19), the column three (22), and the column four (24) to simulate an overweight environment; when the sensor three (20) reaches the position of the sensor one (12), the control system controls the air compressor (1) to stop injecting compressed air.

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