A net cage balance control device and balance control method

Abstract

The application provides a breeding net cage balance control device and method, and belongs to the technical field of breeding net cages. The device comprises an upper horizontal ring, a lower horizontal ring, a plurality of ballast pipes and a plurality of air inlet and outlet pipes. The ballast pipes are arranged at intervals along the circumference of the upper horizontal ring. Each ballast pipe is provided with a water passage near the bottom. A water pressure sensor is arranged at the position of the water passage. One end of the air inlet and outlet pipe is in communication with the ballast pipe, and the other end of the air inlet and outlet pipe can be in communication with a gas source. An electromagnetic valve is connected to the air inlet and outlet pipe. The electromagnetic valve and the water pressure sensor are electrically connected to a controller. The controller controls the opening and closing of the electromagnetic valve according to the detection value of the water pressure sensor. Through the above arrangement, the floating and sinking state of the ballast pipe can be automatically adjusted during the floating and sinking process of the breeding net cage, so that the sinking and floating heights of the plurality of ballast pipes are consistent, and the problem of tilting of the breeding net cage due to uneven distribution of the gravity of the circumferential ballast pipe is reduced.

Description

Technical Field

[0001] This application belongs to the field of aquaculture cage technology, specifically relating to an aquaculture cage balance control device and balance control method. Background Technology

[0002] The existing aquaculture cages are fixed with several floating pipes along their circumference. The bottom of the floating pipes has a water inlet channel and the top is equipped with an air filling and venting structure. By introducing pressurized gas into the floating pipes, the water inside the floating pipes can be gradually discharged, causing the cage to float. Conversely, after the gas inside the floating pipes is discharged, the external water naturally flows into the pipes through the bottom water inlet channel, and the cage sinks accordingly, thus achieving the adjustment of the cage's buoyancy.

[0003] However, during the above-mentioned floating and buoyancy adjustment process of inflation and deflation, due to the different resistance of the inflation and deflation channels of each float and the different unobstructedness of the water inlet at the bottom of the float, it is difficult to keep the water level in each float completely consistent, which will cause uneven circumferential gravity distribution of the cage and cause it to tilt. Summary of the Invention

[0004] This application provides a balance control device and method for aquaculture cages, aiming to improve the consistency of water level in each floating pipe during the floating and sinking adjustment process of the cages and reduce the problem of the cages tilting due to uneven gravity distribution in the circumferential floating pipes.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: A balance control device and method for aquaculture cages are provided, comprising: The upper and lower horizontal circles are set along the height direction; Several ballast pipes are spaced apart along the circumference of the upper horizontal ring; the top and bottom ends of the ballast pipes are connected to the upper horizontal ring and the lower horizontal ring respectively, and each ballast pipe is provided with a water inlet near the bottom, and a water pressure sensor is provided at the water inlet. Several inlet and outlet pipes correspond one-to-one with the ballast pipe; one end of each inlet and outlet pipe is connected to the ballast pipe near the top, and the other end of each inlet and outlet pipe can be connected to an air source; a solenoid valve is connected to each inlet and outlet pipe. The solenoid valve and the water pressure sensor are both electrically connected to the controller. The controller can control the opening and closing of the corresponding solenoid valve according to the detection value of the water pressure sensor so as to make the buoyancy of several ballast tubes the same.

[0006] In one possible implementation, when the aquaculture cage floats, pressurized gas is introduced into the ballast pipes through the air intake and exhaust pipes, and the solenoid valves on each ballast pipe are opened. When the aquaculture cage tilts, the water pressure sensors in different ballast pipes will produce different readings. The controller closes the solenoid valve on the ballast tube with the low detection value, stopping the drainage of the ballast tube with the low detection value, while the ballast tube with the high detection value continues to drain water, so that the buoyancy of several ballast tubes is the same.

[0007] In one possible implementation, as the aquaculture cages sink, exhaust is vented through the air intake and exhaust pipes, and the solenoid valves on each ballast pipe are opened. When the aquaculture cage tilts, the readings from the water pressure sensors in different ballast pipes will differ. The controller closes the solenoid valve on the ballast pipe with the high detection value, stopping the venting of the ballast pipe with the high detection value, while the ballast pipe with the low detection value continues to vent, so that the sinking height of several ballast pipes is the same.

[0008] In one possible implementation, each of the ballast tubes is connected to the upper transverse ring, and a retaining ring is connected to the top of each ballast tube. A baffle is hinged to the bottom of the retaining ring, and the baffle can close or open the retaining ring. A gas pipe is connected to the upper transverse ring, and a valve is connected to the other end of the gas pipe. A float is also provided on the gas pipe. The inlet and outlet pipes are connected to the ballast pipes at the hinge side of the baffle, and the inlet and outlet pipes are inclined to the baffle. When the inlet and outlet pipes supply air to the ballast pipes, the baffle can close the baffle ring under the action of airflow. During the sinking and floating process of the aquaculture cage, the air pressure in the ballast pipe is greater than the air pressure in the upper horizontal ring.

[0009] In one possible implementation, during the floating process of the aquaculture cage, pressurized gas is introduced into the ballast pipe through the air intake and exhaust pipe, which enables the baffle to rotate to the position of the closed retaining ring. After the aquaculture cage floats to its position, close the solenoid valve on the inlet and outlet pipes, open the valve on the gas pipeline, and introduce pressurized gas into the upper horizontal ring, making the air pressure in the upper horizontal ring equal to the air pressure in the ballast pipe; the baffle rotates to the position where the retaining ring is open under its own weight.

[0010] In one possible implementation, during the sinking of the aquaculture cage, the solenoid valve on the inlet and outlet pipe is opened to introduce pressurized gas into the ballast pipe. After the baffle closes the retaining ring, the solenoid valve on the inlet and outlet pipe is closed, and the cage is in a pressure-maintaining state. Open the valve on the gas pipeline and depressurize the upper horizontal ring to ensure that the air pressure in the ballast pipe is always greater than the air pressure in the upper horizontal ring during the descent, so that the baffle remains in a closed retaining ring state.

[0011] In one possible implementation, the lower horizontal ring is connected to the bottom of the ballast pipe, and a support pipe is provided at the bottom of the lower horizontal ring at the position corresponding to each ballast pipe, with the water outlet on the ballast pipe located on the support pipe.

[0012] In one possible implementation, a walking platform is provided at the top of the upper horizontal ring, and a fence is provided on the walking platform. The fence includes columns and an annular pipe. The annular pipe is connected to the air intake and exhaust pipe, and a vent pipe is provided on the annular pipe. A valve is connected to the other end of the vent pipe, and a float is also provided on the vent pipe.

[0013] In one possible implementation, a radial reinforcing tube is provided within the area enclosed by the lower horizontal ring, and the end of the radial reinforcing tube is fixed to the lower horizontal ring.

[0014] This application provides a balance control device for aquaculture cages. Compared with existing technologies, it forms a three-dimensional frame structure through upper and lower horizontal rings and several ballast pipes, which can improve the structural strength of the aquaculture cage, enhance its overall resistance to wind and waves, and reduce irreversible deformation of the overall structure. A water pressure sensor is installed at the water inlet at the bottom of the ballast pipe to detect the water pressure at the bottom of the ballast pipe. By analyzing the detection values ​​of the water pressure sensors in different ballast pipes, the buoyancy of different ballast pipes can be determined. The controller can close the solenoid valves at the corresponding positions to ensure that the buoyancy height of the several ballast pipes is the same. Through the above settings, the buoyancy state of the ballast pipes can be automatically adjusted during the floating and sinking process of the aquaculture cage, ensuring that the buoyancy height of the several ballast pipes is consistent, reducing the problem of tilting of the aquaculture cage due to uneven weight distribution of the circumferential ballast pipes.

[0015] To achieve the above objectives, another technical solution adopted in this application is: A method for controlling the balance of aquaculture cages is provided, comprising the following steps: When the aquaculture cage floats, pressurized gas is introduced into the ballast pipes through the air inlet and outlet pipes, and the solenoid valves on each ballast pipe open. When the aquaculture cage tilts, the water pressure sensors in different ballast pipes will produce different readings. The controller controls the solenoid valves on the ballast pipes with lower readings to close, stopping drainage from the ballast pipes with lower readings, while the ballast pipes with higher readings continue to drain water, so that the floating height of several ballast pipes is the same. When the aquaculture cage sinks, air is vented out through the air intake and exhaust pipes, and the solenoid valves on each ballast pipe open. When the aquaculture cage tilts, the water pressure sensors in different ballast pipes will produce different readings. The controller controls the solenoid valve on the ballast pipe with the higher reading to close, the ballast pipe with the higher reading stops venting, and the ballast pipe with the lower reading continues to vent, so that the sinking height of several ballast pipes is the same.

[0016] The beneficial effects of the aquaculture cage balance control method are the same as those of the balance control device, and will not be repeated here. Attached Figure Description

[0017] Figure 1A schematic diagram of the aquaculture cage portion of an aquaculture cage balance control device provided in an embodiment of this application; Figure 2 A schematic diagram of the radial reinforcing tube portion of a fish farming cage balance control device provided in an embodiment of this application; Figure 3 A cross-sectional view of the ballast pipe portion of a fish farming cage balance control device provided in an embodiment of this application; Figure 4 A schematic diagram of the retaining ring and baffle of a fish farming cage balance control device provided in this application embodiment, inside the ballast pipe; Figure 5 A schematic diagram of a baffle sealing ring of a balance control device for aquaculture cages provided in an embodiment of this application; Figure 6 A schematic diagram of the baffle opening retaining ring of a balance control device for aquaculture cages provided in an embodiment of this application; Figure 7 This is a schematic diagram of the air circuit of a balance control device for aquaculture cages provided in an embodiment of this application.

[0018] Explanation of reference numerals in the attached diagram: 1. Upper horizontal ring; 11. Gas pipe; 2. Lower horizontal ring; 21. Water inlet; 22. Radial reinforcing pipe; 3. Ballast pipe; 31. Baffle ring; 32. Baffle plate; 4. Inlet and outlet pipes; 5. Support pipe; 51. Filter screen; 6. Walking platform; 61. Fence; 62. Annular pipe; 7. Ventilation pipe. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] Please refer to the following: Figures 1 to 7This application describes a balance control device and method for aquaculture cages. The balance control device includes an upper horizontal ring 1, a lower horizontal ring 2, several ballast pipes 3, and several air inlet / outlet pipes 4. The upper and lower horizontal rings 1 and 2 are arranged along the height direction. The several ballast pipes 3 are spaced apart circumferentially along the upper horizontal ring 1. The top and bottom ends of each ballast pipe 3 are connected to the upper and lower horizontal rings 1 and 2, respectively. Each ballast pipe 3 has a water inlet 21 near its bottom, and a water pressure sensor is installed at the water inlet 21. Each air inlet / outlet pipe 4 corresponds to one ballast pipe 3. One end of each air inlet / outlet pipe 4 is connected to the top of a ballast pipe 3, and the other end is connected to an air source. A solenoid valve is connected to each air inlet / outlet pipe 4. Both the solenoid valve and the water pressure sensor are electrically connected to a controller. The controller can control the opening and closing of the corresponding solenoid valve based on the detection value of the water pressure sensor, so that the several ballast pipes 3 float at the same height.

[0021] This application provides a balance control device for aquaculture cages. Compared with existing technologies, this device forms a three-dimensional frame structure with an upper horizontal ring 1, a lower horizontal ring 2, and several ballast pipes 3. This structure improves the structural strength of the aquaculture cage, enhances its resistance to wind and waves, and reduces irreversible deformation. A water pressure sensor is installed at the water inlet 21 at the bottom of the ballast pipe 3 to detect the water pressure at the bottom of the ballast pipe 3. By measuring the water pressure values ​​from the sensors in different ballast pipes 3, the buoyancy of each ballast pipe 3 can be determined. The controller can close the solenoid valves at the corresponding positions to ensure that the buoyancy height of the ballast pipes 3 is the same. Through the above settings, the buoyancy state of the ballast pipes 3 can be automatically adjusted during the buoyancy process of the aquaculture cage, ensuring that the buoyancy height of the ballast pipes 3 is consistent and reducing the problem of tilting of the aquaculture cage due to uneven weight distribution of the circumferential ballast pipes 3.

[0022] It should be noted that the outer wall of the aquaculture cage is evenly equipped with several floats (not shown in the figure) to ensure the balance of the aquaculture cage; the aquaculture cage uses two sets of control logic for the floating and sinking processes, which are explained in detail below: When the aquaculture cage floats, pressurized gas is introduced into the ballast pipe 3 through the air inlet and outlet pipe 4, and the solenoid valve on each ballast pipe 3 is opened. When the aquaculture cage tilts, the detection values ​​of the water pressure sensors in different ballast pipes 3 will produce differences. The controller controls the solenoid valve on the ballast pipe 3 with the lower detection value to close, the ballast pipe 3 with the lower detection value stops draining, and the ballast pipe 3 with the higher detection value continues to drain, so that the floating height of several ballast pipes 3 is the same.

[0023] During the ascent, pressurized gas needs to be introduced into the ballast pipe 3 to expel the water inside and cause the aquaculture cage to float. Due to the different drainage rates of each ballast pipe 3, the aquaculture cage may tilt. The water pressure sensor on the ballast pipe 3 located at the lower tilt direction is located in deeper water, so the detection value of the water pressure sensor on the lower tilt direction is larger. Therefore, the solenoid valve with the lower detection value needs to be closed, the ballast pipe 3 with the higher floating height stops draining, and the ballast pipe 3 with the lower floating height continues to drain. When the floating height of several ballast pipes 3 is equal, the solenoid valves on the other ballast pipes 3 are opened. Through the above settings, it can be ensured that the floating height of several ballast pipes 3 is the same during the ascent process.

[0024] The solenoid valve closing logic differs between the sinking and buoyancy processes of aquaculture cages. The following is the solenoid valve closing logic during the sinking of the aquaculture cage: When the aquaculture cage sinks, air is vented outward through the air intake and exhaust pipes 4, and the solenoid valves on each ballast pipe 3 are opened. When the aquaculture cage tilts, the water pressure sensors in different ballast pipes 3 will produce different values. The controller controls the solenoid valve on the ballast pipe 3 with the higher value to close, the ballast pipe 3 with the higher value to stop venting, and the ballast pipe 3 with the lower value to continue venting, so that the sinking height of several ballast pipes 3 is the same.

[0025] Since the sinking process of the aquaculture cage requires the release of pressurized gas from the ballast pipe 3, if the aquaculture cage tilts during the sinking process, the water pressure detection value of the ballast pipe 3 located below the tilt direction will still be higher. However, at this time, the solenoid valve of the ballast pipe 3 with the higher detection value needs to be closed to stop the release of pressurized gas from that ballast pipe 3; the other ballast pipes 3 with lower detection values ​​continue to release gas, allowing the other ballast pipes 3 to continue sinking; when several ballast pipes 3 sink to the same height, the solenoid valve is opened again to release gas together.

[0026] In some embodiments, such as Figures 1 to 7 As shown, each ballast pipe 3 is connected to the upper horizontal ring 1. A retaining ring 31 is connected to the top of each ballast pipe 3. A baffle 32 is hinged to the bottom of the retaining ring 31, which can close or open the retaining ring 31. A gas pipe 11 is connected to the upper horizontal ring 1. A valve is connected to the other end of the gas pipe 11. A float is also provided on the gas pipe 11, which can make the gas pipe 11 float on the water surface. Even if the entire aquaculture cage is submerged in the water, the length of the gas pipe 11 is sufficient for the other end of the gas pipe 11 to float on the water surface. The inlet and outlet pipes 4 are connected to the ballast pipes 3 at the hinge side of the baffle 32, and the inlet and outlet pipes 4 are inclined to the baffle 32. When the inlet and outlet pipes 4 vent air to the ballast pipes 3, the baffle 32 can close the retaining ring 31 under the action of airflow. During the sinking and floating process of the aquaculture cage, the air pressure in the ballast pipes 3 is greater than the air pressure in the upper horizontal ring 1.

[0027] A retaining ring 31 and a baffle 32 are installed at the connection position between the ballast pipe 3 and the upper horizontal ring 1. After the aquaculture net cage is adjusted to the correct position, the air pressure in the upper horizontal ring 1 and the air pressure in the ballast pipe 3 are the same. The baffle 32 can swing downwards to open the retaining ring 31, so that the ballast pipe 3 and the upper horizontal ring 1 are connected. At this time, the air pressure in several ballast pipes 3 is interconnected.

[0028] When it is necessary to adjust the floating and sinking position of the aquaculture cage, the air pressure in the ballast pipe 3 is set to be greater than the air pressure in the upper horizontal ring 1, and the retaining ring 31 is closed by the baffle 32. This allows several ballast pipes 3 to adjust their floating and sinking heights individually. The adjustment process for the floating and sinking of a single ballast pipe 3 has been explained above and will not be repeated here. The following describes the process of closing the baffle 32 and opening the retaining ring 31: During the floating process of the aquaculture cage, the air inlet and outlet pipe 4 introduces pressurized gas into the ballast pipe 3, which enables the baffle 32 to rotate to the position of the closed retaining ring 31. Since pressurized gas needs to be continuously introduced into the ballast pipe 3 during the floating process, the air pressure in the ballast pipe 3 is always greater than the air pressure in the upper horizontal ring 1. During the floating process, the baffle 32 can be in the state of the closed retaining ring 31.

[0029] After the aquaculture cage floats to its position, close the solenoid valve on the inlet and outlet pipe 4, open the valve on the gas pipe 11, introduce pressurized gas into the upper horizontal ring 1, and make the air pressure in the upper horizontal ring 1 equal to the air pressure in the ballast pipe 3; the baffle 32 rotates to the position of opening the retaining ring 31 under its own weight.

[0030] The control logic for the sinking process of aquaculture cages differs from that for the buoyancy process. The sinking process of aquaculture cages is explained below: During the sinking of the aquaculture cage, the solenoid valve on the inlet and outlet pipe 4 is opened to introduce pressurized gas into the ballast pipe 3. After the baffle 32 closes the retaining ring 31, the solenoid valve on the inlet and outlet pipe 4 is closed, and the cage is in a pressure-maintaining state. The valve on the gas pipeline 11 is opened to release pressure from the upper horizontal ring 1, so as to ensure that the air pressure in the ballast pipe 3 is always greater than the air pressure in the upper horizontal ring 1 during the sinking process, so that the baffle 32 remains in the state of closing the retaining ring 31.

[0031] During the sinking process of the aquaculture cage, the pressurized gas in the ballast pipe 3 needs to be discharged, which will cause the air pressure in the ballast pipe 3 to be lower than the air pressure in the upper horizontal ring 1. Therefore, before discharging the gas in the ballast pipe 3, pressurized gas is first introduced into the ballast pipe 3 to close the baffle 32. Then, the ballast pipe 3 maintains pressure, and the valve in the gas pipeline 11 is opened to release pressure in the upper horizontal ring 1. During the subsequent sinking process, it can be ensured that the air pressure in the ballast pipe 3 is always higher than the air pressure in the upper horizontal ring 1, ensuring independent adjustment of the sinking process of the ballast pipe 3. The adjustment process of the sinking process of the ballast pipe 3 has been explained above and will not be repeated here.

[0032] In some embodiments, such as Figures 1 to 7 As shown, the bottom of the lower horizontal ring 2 is connected to the bottom of the ballast pipe 3. A support pipe 5 is provided at the bottom of the lower horizontal ring 2 at the position corresponding to each ballast pipe 3. The water outlet 21 on the ballast pipe 3 is provided on the support pipe 5.

[0033] It should be noted that the lower horizontal ring 2 is connected to the bottom of the ballast pipe 3 to form a bottom ring support structure. Together with the support pipe 5 set in the corresponding ballast pipe 3, it can improve the load-bearing capacity and deformation resistance of the bottom of the aquaculture cage. Since there is no need to open the water outlet 21 on the ballast pipe 3, the structural strength of the ballast pipe 3 can be improved.

[0034] The inlet 21 is installed on the support pipe 5, and a filter screen 51 is installed at the inlet 21 to provide protection and reduce debris entering the support pipe 5. By installing a water pressure sensor at the inlet 21, the water pressure at the bottom can be detected, ensuring that the bottom of the aquaculture cage is on the same horizontal plane during the floating and sinking adjustment process.

[0035] In some embodiments, such as Figures 1 to 7 As shown, a walking platform 6 is set at the top of the upper horizontal circle 1. A fence 61 is set on the walking platform 6. The fence 61 includes a column and an annular pipe 62. The annular pipe 62 is connected to the air inlet and outlet pipe 4. The annular pipe 62 has a vent pipe 7. The other end of the vent pipe 7 is connected to a valve. The vent pipe 7 is also equipped with a float. Even if the aquaculture net cage is completely submerged in the water, the length of the vent pipe 7 is sufficient to allow the other end of the vent pipe 7 to float on the water surface. The vent pipe 7 can be set together with the gas pipe 11. Therefore, the vent pipe 7 and the gas pipe 11 can share a float.

[0036] It should be noted that both the vent pipe 7 and the gas pipeline 11 are flexible hoses; the controller is placed inside the first waterproof housing, and the solenoid valve is placed inside the second waterproof housing. The first and second waterproof housings are fixed to the aquaculture net cage; the influence of the first and second waterproof housings on the tilt of the aquaculture net cage is negligible. The power supply cable on the controller passes through the first waterproof housing and runs along the length of the gas pipeline 11. The other end of the power supply cable is a plug, located at the position of the gas pipeline 11 relative to the float; the power supply cable is sealed to the first waterproof housing; when the vent pipe 7 is connected to the air compressor on the ship, the plug on the power supply cable is connected to the ship's power supply to power the controller, solenoid valve, and water pressure sensor; since the water pressure sensor and solenoid valve are electrically connected to the controller, after the controller is powered on, the controller can supply power to the water pressure sensor and solenoid valve.

[0037] With the above configuration, the fence 61 on the walking platform 6 not only serves a protective function, but also functions as an air passage, eliminating the need for additional air passage pipes and improving structural compactness.

[0038] In some embodiments, such as Figures 1 to 7 As shown, a radial reinforcing tube 22 is provided within the area enclosed by the lower horizontal ring 2, and the end of the radial reinforcing tube 22 is fixed to the lower horizontal ring 2; in this embodiment, four radial reinforcing tubes 22 are provided, and the four radial reinforcing tubes 22 are connected at the center position by a four-way connector, and the other end of the four radial reinforcing tubes 22 is fixed to the lower horizontal ring 2; through the above arrangement, the strength of the lower horizontal ring 2 can be improved.

[0039] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A balance control device for aquaculture cages, characterized in that, include: The upper and lower horizontal circles are set along the height direction; Several ballast pipes are spaced apart along the circumference of the upper horizontal ring; the top and bottom ends of the ballast pipes are connected to the upper horizontal ring and the lower horizontal ring respectively, and each ballast pipe is provided with a water inlet near the bottom, and a water pressure sensor is provided at the water inlet. Several inlet and outlet pipes correspond one-to-one with the ballast pipe; one end of each inlet and outlet pipe is connected to the ballast pipe near the top, and the other end of each inlet and outlet pipe can be connected to an air source; a solenoid valve is connected to each inlet and outlet pipe. The solenoid valve and the water pressure sensor are both electrically connected to the controller. The controller can control the opening and closing of the corresponding solenoid valve according to the detection value of the water pressure sensor so as to make the buoyancy of several ballast tubes the same. Each of the ballast tubes is connected to the upper horizontal ring. A retaining ring is connected to the top of each ballast tube. A baffle is hinged to the bottom of the retaining ring. The baffle can close or open the retaining ring. A gas pipe is connected to the upper horizontal ring. A valve is connected to the other end of the gas pipe. A float is also provided on the gas pipe. The inlet and outlet pipes are connected to the ballast pipes at the hinge side of the baffle, and the inlet and outlet pipes are inclined to the baffle. When the inlet and outlet pipes supply air to the ballast pipes, the baffle can close the baffle ring under the action of airflow. During the sinking and floating process of the aquaculture cage, the air pressure in the ballast pipe is greater than the air pressure in the upper horizontal ring. During the process of the aquaculture cage floating, pressurized gas is introduced into the ballast pipe through the air intake and exhaust pipe, which can cause the baffle to rotate to the position of the closed retaining ring. After the aquaculture cage floats to its position, close the solenoid valve on the inlet and outlet pipes, open the valve on the gas pipeline, and introduce pressurized gas into the upper horizontal ring, making the air pressure in the upper horizontal ring equal to the air pressure in the ballast pipe; the baffle rotates to the open position under its own weight. During the sinking of the aquaculture cage, the solenoid valve on the inlet and outlet pipe is opened to introduce pressurized gas into the ballast pipe. After the baffle closes the retaining ring, the solenoid valve on the inlet and outlet pipe is closed, and the cage is in a pressure-maintaining state. Open the valve on the gas pipeline and depressurize the upper horizontal ring to ensure that the air pressure in the ballast pipe is always greater than the air pressure in the upper horizontal ring during the descent, so that the baffle remains in a closed retaining ring state.

2. The aquaculture cage balance control device as described in claim 1, characterized in that, When the aquaculture cages float to the surface, pressurized gas is introduced into the ballast pipes through the air intake and exhaust pipes, and the solenoid valves on each ballast pipe are opened. When the aquaculture cage tilts, the water pressure sensors in different ballast pipes will produce different readings. The controller closes the solenoid valve on the ballast tube with the low detection value, stopping the drainage of the ballast tube with the low detection value, while the ballast tube with the high detection value continues to drain water, so that the buoyancy of several ballast tubes is the same.

3. The aquaculture cage balance control device as described in claim 1, characterized in that, When the aquaculture cages are lowered, exhaust is released through the air intake and exhaust pipes, and the solenoid valves on each ballast pipe are opened. When the aquaculture cage tilts, the readings from the water pressure sensors in different ballast pipes will differ. The controller closes the solenoid valve on the ballast pipe with the high detection value, stopping the venting of the ballast pipe with the high detection value, while the ballast pipe with the low detection value continues to vent, so that the sinking height of several ballast pipes is the same.

4. The aquaculture cage balance control device as described in claim 1, characterized in that, The lower horizontal ring is connected to the bottom of the ballast pipe, and a support pipe is provided at the bottom of the lower horizontal ring at the position corresponding to each ballast pipe. The water outlet on the ballast pipe is located on the support pipe.

5. The aquaculture cage balance control device as described in claim 1, characterized in that, A walking platform is set at the top of the upper horizontal ring. The walking platform is equipped with a fence, which includes a column and a ring pipe. The ring pipe is connected to the air intake and exhaust pipe. The ring pipe has a vent pipe, and the other end of the vent pipe is connected to a valve. A float is also provided on the vent pipe.

6. The aquaculture cage balance control device as described in claim 1, characterized in that, A radial reinforcing tube is provided within the area enclosed by the lower horizontal ring, and the end of the radial reinforcing tube is fixed to the lower horizontal ring.

7. A balance control method using the aquaculture cage balance control device as described in any one of claims 1-6, characterized in that, Includes the following steps: When the aquaculture cage floats, pressurized gas is introduced into the ballast pipes through the air inlet and outlet pipes, and the solenoid valves on each ballast pipe open. When the aquaculture cage tilts, the water pressure sensors in different ballast pipes will produce different readings. The controller controls the solenoid valves on the ballast pipes with lower readings to close, stopping drainage from the ballast pipes with lower readings, while the ballast pipes with higher readings continue to drain water, so that the floating height of several ballast pipes is the same. When the aquaculture cage sinks, air is vented out through the air intake and exhaust pipes, and the solenoid valves on each ballast pipe open. When the aquaculture cage tilts, the water pressure sensors in different ballast pipes will produce different readings. The controller controls the solenoid valve on the ballast pipe with the higher reading to close, the ballast pipe with the higher reading stops venting, and the ballast pipe with the lower reading continues to vent, so that the sinking height of several ballast pipes is the same.

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