Aquaculture net cage based on wind power plant

Abstract

The invention discloses an aquaculture net cage based on a wind power plant, which belongs to the technical field of fusion of marine renewable energy sources and marine ranching and comprises a wind generating set, a floating platform and an aquaculture net cage unit. The interior of the floating type platform is divided into at least two independent cabins through partition plates, water in a specific proportion is injected into the cabins to form a multi-order tuning liquid damper, and multi-order vibration of the platform in the marine environment is effectively restrained. The aquaculture net cage unit is connected to the lower portion of the floating type platform, a net of the aquaculture net cage unit is of a spiral surrounding curved surface structure and is supported by a framework with the adjustable lead angle, and axial vortex is formed under the effect of natural water flow to achieve self-cleaning. The system is further provided with an intelligent bait casting unit, and bait casting strategies can be dynamically adjusted according to real-time ocean current data. By means of the integrated design, efficient fusion of offshore wind power and deep sea breeding is achieved, and the device has the advantages of being stable in structure, self-cleaning, high in bait utilization rate, self-sufficient in energy and the like.

Description

Technical Field

[0001] This invention belongs to the field of marine renewable energy and marine ranching technology, specifically relating to an aquaculture cage based on a wind farm. Background Technology

[0002] With the accelerated pace of marine resource development, the integrated development model of offshore wind power and deep-sea aquaculture is receiving increasing attention. This model aims to improve the efficiency of marine space utilization and achieve the dual goals of energy self-sufficiency and low-carbon aquaculture. Existing technologies, such as US20110074155A1, disclose a horizontally movable floating offshore wind turbine and wind farm, which adjusts the turbine's position through a drive system to optimize power output and reduce load. This allows for the flexible arrangement of other marine structures within the wind farm. However, existing technologies still face a series of challenges in practical applications.

[0003] First, floating platforms supporting wind turbine generators are prone to multi-mode vibrations under the influence of complex marine environmental loads such as waves and currents. These vibrations not only affect the operating efficiency and structural safety of the wind turbines but also transmit to the aquaculture cages below, causing continuous stress to the cultured organisms and accelerating structural fatigue. Traditional tuned liquid dampers are mostly designed for single vibration frequencies and are difficult to effectively suppress the multi-mode vibrations of floating platforms under broadband wave excitation, resulting in limited vibration suppression effects. Second, the surface of traditional cage nets is easily fouled by algae, shellfish, and other biofouling, clogging the mesh, hindering water exchange, and leading to a deterioration of the aquaculture environment. Currently, net cleaning mainly relies on manual labor or underwater robots, which suffers from low efficiency, high cost, and interference with aquaculture. In addition, the feeding management of deep-sea cages remains relatively extensive. Traditional feeding methods are difficult to adapt to dynamic ocean current environments, often leading to significant feed loss and sedimentation, which not only increases aquaculture costs but also causes pollution in surrounding waters.

[0004] Therefore, there is an urgent need to develop a new type of aquaculture cage system that can effectively control multi-level vibrations of the platform, has a self-cleaning function for the netting, and can achieve precise and intelligent feeding, thereby promoting the deep integration and healthy development of offshore wind power and deep-sea aquaculture. Summary of the Invention

[0005] This invention aims to provide a structurally stable marine integrated equipment. By integrating a wind turbine generator set, a floating platform with a built-in multi-stage tuned liquid damper, and an underwater aquaculture cage unit into a single design, the stability of the platform is effectively improved, and energy self-sufficiency is achieved.

[0006] The present invention adopts the following technical solution: a wind farm-based aquaculture cage, including a wind turbine generator set and an aquaculture cage unit, and a floating platform. The floating platform is divided into at least two independent compartments by a partition. The partition is a movable intelligent partition system that can adjust its position according to real-time sea state data to change the size and shape of the compartment. Water is injected into the compartment to form a multi-stage tuned liquid damper. The wind turbine generator set is fixedly installed on the floating platform, and the aquaculture cage unit is connected to the bottom of the floating platform.

[0007] Specifically, the compartments include a first compartment corresponding to the first-order vibration frequency of the floating platform and a second compartment corresponding to the second-order vibration frequency. The core of this design lies in utilizing the principle of multi-order tuned liquid dampers to precisely suppress the main vibration modes that may be excited in the floating platform in a marine environment. The specific implementation principle and process are as follows: First, the structure of the floating platform is dynamically analyzed through finite element simulation or model experiments to determine its main vibration characteristics under wave loads in the target sea area, especially its first-order natural frequency (usually a low-frequency, large-amplitude overall translational or swaying mode) and second-order natural frequency (usually a higher-frequency, smaller-amplitude bending or torsional mode). Subsequently, based on the vibration frequencies obtained from the above analysis, the geometric dimensions and liquid parameters of the first and second compartments are specifically designed. The sloshing natural frequency of the liquid within the rectangular compartment mainly depends on the length of the compartment in the vibration direction and the depth of the water inside the compartment (i.e., the water depth ratio). By adjusting these two key parameters, the sloshing frequency of the water in each compartment can be made close to or consistent with the first-order and second-order vibration frequencies of the platform, thereby achieving "frequency tuning".

[0008] Preferably, the water depth ratio of the first compartment is in the range of 0.1 to 0.2, and the ratio of the total mass of the water inside the first compartment to the mass of the floating platform is 1% to 5%; the water depth ratio of the second compartment is in the range of 0.2 to 0.3, and the ratio of the total mass of the water inside the second compartment to the mass of the floating platform is 1% to 5%; wherein, the water depth ratio is the ratio of the water depth inside the compartment to the length of the compartment in the vibration direction. The first compartment is tuned to the first-order vibration frequency of the platform. Since its target frequency is low, its water depth ratio is designed in a small range of 0.1 to 0.2. Within this range, the water exhibits deep-water sloshing characteristics, and its natural frequency is not sensitive to changes in water depth, but is mainly controlled by the length of the compartment, making it easy to match with low-frequency vibration frequencies. The second compartment is tuned to the second-order vibration frequency of the platform. This target frequency is relatively high, so its water depth ratio is designed in a larger range of 0.2 to 0.3. Within this range, the water sloshing frequency is more sensitive to water depth, and by carefully designing the water depth and compartment length, higher-frequency vibrations can be effectively covered. Through the above design, when wave excitation causes the floating platform to vibrate at its first-order frequency, the liquid in the first compartment will undergo strong resonant sloshing, acting as the main damper to dissipate most of the vibration energy. When the excitation frequency approaches the second-order frequency, the second compartment will activate and play a major role in vibration suppression. This step-by-step, coordinated vibration suppression mechanism significantly improves the stability and safety of the floating platform under complex sea conditions. To ensure sufficient vibration suppression without affecting the overall stability of the platform, the total mass of the water in both the first and second compartments is controlled to 1% to 5% of the total mass of the floating platform. To further improve energy dissipation efficiency, damping structures are installed in both compartments. When platform vibration causes sloshing of the liquid inside the compartments, the liquid flowing through the damping structures generates intense turbulence and friction, thereby converting mechanical energy into heat energy and rapidly attenuating platform vibration.

[0009] Preferably, the first and second compartments are provided with damping structures, which are at least one of perforated baffles, meshes, or columns.

[0010] Specifically, the aquaculture cage unit is equipped with an underwater lighting unit, which can control the lighting intensity, spectrum and light cycle according to a preset program.

[0011] Specifically, a wind farm-based aquaculture cage also includes an integrated management and control system, which includes: an energy management unit for distributing the electrical energy generated by the wind turbine generator to the electrical equipment of the aquaculture cage unit; a vibration monitoring unit for monitoring the vibration status of the floating platform; and an aquaculture monitoring unit for monitoring environmental parameters and / or biological activity status within the aquaculture cage unit.

[0012] Specifically, the aquaculture cage unit includes a cage frame and a net fixed thereon, the net being a spirally wound curved structure. Under the action of natural water flow, the spirally wound curved structure guides the water flowing through the aquaculture cage unit to generate a stable axial vortex; the scouring effect of this axial vortex can effectively inhibit the adhesion of pollutants to the surface of the net and remove loose dirt that has already adhered.

[0013] Preferably, the mesh is supported and fixed by a spiral skeleton, the helix angle of which is adjustable within the range of 15° to 60°. The spiral skeleton adjusts its helix angle to adapt to different flow velocity conditions and optimize the vortex flow field formed inside. Optionally, the mesh frame is provided with an adjustment track, and the spiral skeleton is movably connected to the adjustment track via a slider. By changing the fixed position of the slider on the adjustment track, the helix angle of the spiral skeleton is continuously adjustable within the range of 15° to 60°. By changing the helix angle, the strength and shape of the vortex can be optimized to adapt to different marine environmental conditions: under low flow conditions, the helix angle can be appropriately reduced (e.g., adjusted towards 15°). A smaller helix angle means a more "gentle" spiral, which increases the contact path and guiding effect between the water flow and the netting, helping to "excite" and maintain a sufficiently strong vortex in weak flow, ensuring self-cleaning effect; under high flow conditions, the helix angle can be appropriately increased (e.g., adjusted towards 60°). A larger helix angle makes the spiral more "steep," which can avoid vortex breakage or energy loss due to excessively fast water flow, maintaining a stable and aquaculture-friendly flow field environment while ensuring cleaning efficiency.

[0014] Specifically, the aquaculture cage unit is equipped with a feeding unit, which includes a feed bin, a scattering mechanism, and a controller for controlling the operation of the scattering mechanism.

[0015] Furthermore, the feeding unit also includes an environmental sensing module, which includes sensors for detecting water flow velocity and direction. The controller is communicatively connected to the sensors and can dynamically adjust the feeding strategy based on the feedback information from the sensors. To achieve intelligent feeding, the controller first identifies the inflow side of the net cage based on water flow sensor data and drives the feeding mechanism to move to that upstream area to feed, allowing the feed to naturally diffuse throughout the net cage with the water flow, avoiding instantaneous feed loss caused by downstream feeding. For different flow velocity conditions, the controller dynamically adjusts the feeding parameters: at high flow velocities, it reduces the instantaneous feeding rate and extends the total feeding time to prevent concentrated feed loss and extend the effective feeding window; at low flow velocities or in still water, it increases the feeding rate and shortens the feeding time to adapt to the slow settling and diffusion of feed. Furthermore, the controller performs fine control of the feeding action: based on real-time flow velocity and direction, it dynamically adjusts the outlet angle of the feeding mechanism 52 and the initial velocity of the feed, causing it to be thrown upstream or laterally to counteract the water flow impact and optimize the feed trajectory. This technique allows the bait to form a wider-distributed bait cloud that remains suspended for a longer time after entering the water, thereby improving feeding efficiency and reducing bait waste.

[0016] Furthermore, the intelligent bulkhead system is communicatively connected to an integrated management and control system, which is configured to: receive real-time sea state data from an environmental sensing module, the sea state data including at least wave frequency and wave height; calculate the current dominant vibration mode of the floating platform based on the real-time sea state data; and drive the intelligent bulkhead system to move to tune the liquid sloshing frequency of at least one of the compartments to match the frequency of the current dominant vibration mode. The intelligent bulkhead system is any one of an electrically driven vertical plate structure, a foldable flexible bulkhead, or an inflatable diaphragm. The integrated management and control system is also configured to: in severe sea conditions, drive the intelligent bulkhead system to move to merge multiple compartments into a main damping chamber with a larger liquid mass to suppress low-frequency large-amplitude sloshing.

[0017] The core advantages of this invention are as follows: First, a multi-stage tuned liquid damper is designed inside the floating platform. This structure, by setting independent compartments corresponding to the platform's first and second-order vibration frequencies and precisely controlling the water depth ratio and water mass ratio, achieves accurate suppression of the platform's main vibration modes. Compared to traditional single-frequency dampers, this multi-stage vibration suppression system can effectively cope with broadband wave excitation under complex sea conditions, significantly reducing the platform's vibration amplitude. This advantage directly translates into higher power generation efficiency and operational reliability for the wind turbine generator, while providing a more stable growth environment for the aquaculture organisms below. Second, the use of a spiral-wound curved mesh structure, supported by a skeleton with an adjustable helix angle, enables the cage to achieve passive self-cleaning. Under the action of natural water flow, the mesh guides the internal water flow to form a stable axial vortex, generating a continuous scouring effect, effectively preventing the adhesion of biological fouling and removing loose deposits. By adjusting the helix angle, it can adapt to different flow velocity conditions, thereby reducing the need for mesh cleaning and maintenance and lowering operating costs. Third, an integrated environmental sensing intelligent feeding system enables precise feeding. By monitoring environmental parameters in real time through water flow velocity and direction sensors, the control system can automatically identify the inflow side of the net cage and dynamically adjust the feeding position, throwing rate, discharge angle and initial velocity of the feed to ensure that the feed forms a "feed cloud" with uniform distribution and extended suspension time, which significantly improves the feeding rate and reduces feed waste and water pollution. Attached Figure Description

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a wind farm-based aquaculture cage according to the present invention.

[0020] Figure 2 This is a schematic diagram of the floating platform described in Embodiment 1.

[0021] Figure 3 This is a schematic diagram of the water levels in the first and second compartments of Embodiment 1 (h1 is the water level in the first compartment, and h2 is the water level in the second compartment).

[0022] Figure 4 This is a schematic diagram of the damping structure described in Example 1.

[0023] Figure 5 This is a schematic diagram of the floating platform and aquaculture cage unit described in Embodiment 1.

[0024] Figure 6 This is a schematic diagram of the aquaculture cage unit described in Example 1 underwater.

[0025] Figure descriptions: 1-Wind turbine generator set; 2-Floating platform; 21-Block; 22-First compartment; 23-Second compartment; 24-Damping structure; 3-Aquaculture cage unit; 31-Cage frame; 32-Netting; 33-Spiral skeleton; 4-Underwater lighting unit; 5-Feeding unit; 51-Feed bin; 52-Spreading mechanism; 53-Environmental sensing module. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] Example 1 See Figure 1 A wind farm-based aquaculture cage includes a wind turbine generator set 1 and an aquaculture cage unit 3, and also includes a floating platform 2. The floating platform 2 is divided into at least two independent compartments by a partition 21. The compartments are filled with water to form a multi-stage tuned liquid damper. The wind turbine generator set 1 is fixedly installed on the floating platform 2, and the aquaculture cage unit 3 is connected to the bottom of the floating platform 2.

[0029] See Figure 2The compartments include a first compartment 22 corresponding to the first-order vibration frequency of the floating platform 2 and a second compartment 23 corresponding to the second-order vibration frequency. The core of this design lies in utilizing the principle of multi-order tuned liquid dampers to precisely suppress the main vibration modes that may be excited by the floating platform in the marine environment. The specific implementation principle and process are as follows: First, the structure of the floating platform 2 is dynamically analyzed through finite element simulation or model experiments to determine its main vibration characteristics under wave loads in the target sea area, especially its first-order natural frequency (usually a low-frequency, large-amplitude overall translational or rocking mode) and second-order natural frequency (usually a higher-frequency, smaller-amplitude bending or torsional mode); then, based on the vibration frequencies obtained from the above analysis, the geometric dimensions and liquid parameters of the first compartment 22 and the second compartment 23 are specifically designed. The natural frequency of liquid sloshing in a rectangular compartment depends mainly on the length of the compartment in the vibration direction and the depth of the water in the compartment (i.e., the water depth ratio). By adjusting these two key parameters, the sloshing frequency of the water in each compartment can be made close to or consistent with the first and second order vibration frequencies of the platform, thereby achieving "frequency tuning".

[0030] Preferably, the water depth ratio of the first compartment 22 is in the range of 0.1 to 0.2, and the ratio of the total mass of the water inside it to the mass of the floating platform 2 is 1% to 5%; the water depth ratio of the second compartment 23 is in the range of 0.2 to 0.3, and the ratio of the total mass of the water inside it to the mass of the floating platform 2 is 1% to 5%; wherein, the water depth ratio is the ratio of the water depth h1 (h2) inside the compartment to the length of the compartment in the vibration direction (see...). Figure 3The first compartment 22 is tuned to the platform's first-order vibration frequency. Because its target frequency is relatively low, its water depth ratio is designed within a small range of 0.1 to 0.2. Within this range, the water exhibits deep-water sloshing characteristics, and its natural frequency is not sensitive to changes in water depth, mainly controlled by the compartment length, making it easy to match with low-frequency vibrations. The second compartment 23 is tuned to the platform's second-order vibration frequency. This target frequency is relatively high, so its water depth ratio is designed within a larger range of 0.2 to 0.3. Within this range, the water sloshing frequency is more sensitive to water depth; by carefully designing the water depth and compartment length, higher-frequency vibrations can be effectively covered. Through this design, when wave excitation causes the floating platform 2 to vibrate at its first-order frequency, the liquid in the first compartment 22 will undergo strong resonant sloshing, acting as the main damper to consume most of the vibration energy; when the excitation frequency approaches the second-order frequency, the second compartment 23 will activate and play a major role in vibration suppression. This hierarchical and coordinated vibration suppression mechanism significantly improves the motion stability and safety of the floating platform 2 under complex sea conditions. To ensure sufficient vibration damping without affecting the overall stability of the platform, the total mass of the water in both the first compartment 22 and the second compartment 23 is controlled to be 1% to 5% of the total mass of the floating platform 2. To further improve energy dissipation efficiency, damping structures are installed in both compartments. When platform vibration causes liquid sloshing within the compartments, the liquid flowing through the damping structures generates intense turbulence and friction, thereby converting mechanical energy into heat energy and rapidly attenuating platform vibration.

[0031] More preferably, the bulkhead 21 is a movable or adjustable intelligent bulkhead system. This system can dynamically adjust the position of the bulkhead 21 based on real-time sea state data to change the size and shape of the compartment, thereby ensuring that the sloshing frequency of the liquid inside the compartment is precisely tuned to the current dominant vibration mode of the floating platform. This achieves a leap from "static fixed" to "dynamic adaptive" vibration suppression mechanisms, significantly improving the platform's overall stability and vibration suppression efficiency under wide-bandgap, time-varying sea states, while also optimizing space utilization. Specifically, the system uses an integrated high-precision sensor network (including a motion reference unit, wave radar, and an in-compartment liquid level sensing system) to collect real-time data on the platform's motion attitude, external sea state, and in-compartment liquid state.

[0032] See Figure 4 The cabin is equipped with a damping structure 24, which is at least one of a perforated baffle, a mesh, or a column.

[0033] Specifically, the aquaculture cage unit 3 is equipped with an underwater lighting unit 4, which can control the lighting intensity, spectrum and light cycle according to a preset program.

[0034] Specifically, a wind farm-based aquaculture cage also includes an integrated management and control system, which includes: an energy management unit for distributing the electrical energy generated by the wind turbine generator 1 to the electrical equipment of the aquaculture cage unit 3; a vibration monitoring unit for monitoring the vibration state of the floating platform 2; and an aquaculture monitoring unit for monitoring environmental parameters and / or biological activity within the aquaculture cage unit 3.

[0035] See Figure 5 and Figure 6 The aquaculture cage unit 3 includes a cage frame 31 and a net 32 ​​fixed thereon, the net 32 ​​being a spirally wound curved structure. Under the action of natural water flow, the spirally wound curved structure guides the water flowing through the aquaculture cage unit 3 to generate a stable axial vortex; the scouring effect of this axial vortex can effectively inhibit the adhesion of pollutants to the surface of the net 32 ​​and remove loose dirt that has already adhered. The net 32 ​​is supported and fixed by a spiral skeleton 33, the spiral angle of which is adjustable within the range of 15° to 60°. The spiral skeleton 33 adjusts its spiral angle to adapt to different flow velocity conditions and optimize the vortex flow field formed inside it. Optionally, an adjustment track is provided on the cage frame 31, and the spiral skeleton 33 is movably connected to the adjustment track via a slider. By changing the fixed position of the slider on the adjustment track, the spiral angle of the spiral skeleton 33 can be continuously adjusted within the range of 15° to 60°. By changing the helix angle, the strength and shape of the vortex can be optimized to adapt to different marine environmental conditions: under low flow conditions, the helix angle can be appropriately reduced (e.g., adjusted towards 15°). A smaller helix angle means a more "gentle" spiral, which increases the contact path and guiding effect between the water flow and the netting, helping to "excite" and maintain a sufficiently strong vortex in weak flow, ensuring self-cleaning effect; under high flow conditions, the helix angle can be appropriately increased (e.g., adjusted towards 60°). A larger helix angle makes the spiral more "steep," which can avoid vortex breakage or energy loss due to excessively fast water flow, maintaining a stable and aquaculture-friendly flow field environment while ensuring cleaning efficiency.

[0036] Specifically, the aquaculture cage unit 3 is equipped with a feeding unit 5, which includes a feed bin 51, a throwing mechanism 52, and a controller for controlling the operation of the throwing mechanism 52.

[0037] Preferably, the feeding unit 5 further includes an environmental sensing module 53, which includes sensors for detecting water flow velocity and direction. The controller is communicatively connected to the sensors and can dynamically adjust the feeding strategy based on the feedback information from the sensors. To achieve intelligent feeding, the controller first identifies the inflow side of the net cage based on water flow sensor data and drives the feeding mechanism 52 to move to that upstream area to feed, allowing the feed to naturally diffuse throughout the net cage with the water flow, avoiding instantaneous feed loss caused by downstream feeding. For different flow velocity conditions, the controller dynamically adjusts the feeding parameters: at high flow velocities, it reduces the instantaneous feeding rate and extends the total feeding time to prevent concentrated feed loss and extend the effective feeding window; at low flow velocities or in still water, it increases the feeding rate and shortens the feeding time to adapt to the slow settling and diffusion of feed. Furthermore, the controller precisely controls the throwing action: based on real-time flow velocity and direction, it dynamically adjusts the outlet angle of the throwing mechanism 52 and the initial velocity of the bait, causing it to be thrown upstream or laterally to counteract the impact of the water flow and optimize the bait's trajectory. This results in the bait forming a more widely distributed bait cloud with a longer suspension time after entering the water, thereby improving feeding efficiency and reducing bait waste.

[0038] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any way. Any person skilled in the art may make some modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but these should still be regarded as the technology or embodiments that are substantially the same as the present invention.

[0039] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A wind farm-based aquaculture cage, comprising a wind turbine generator set (1) and an aquaculture cage unit (3), characterized in that, It also includes a floating platform (2), which is divided into at least two independent compartments by a partition (21). The compartments are filled with water to form a multi-stage tuned liquid damper. The wind turbine generator set (1) is fixedly installed on the floating platform (2), and the aquaculture cage unit (3) is connected to the bottom of the floating platform (2).

2. The aquaculture cage according to claim 1, characterized in that, The compartment includes a first compartment (22) corresponding to the first vibration frequency of the floating platform (2) and a second compartment (23) corresponding to the second vibration frequency. The compartment is provided with a damping structure (24), which is at least one of a perforated baffle, a mesh or a column.

3. The aquaculture cage according to claim 2, characterized in that, The water depth ratio of the first compartment (22) is in the range of 0.1 to 0.2, and the ratio of the total mass of the water inside it to the mass of the floating platform (2) is 1% to 5%; the water depth ratio of the second compartment (23) is in the range of 0.2 to 0.3, and the ratio of the total mass of the water inside it to the mass of the floating platform (2) is 1% to 5%; wherein, the water depth ratio is the ratio of the water depth inside the compartment to the length of the compartment in the vibration direction.

4. The aquaculture cage according to claim 1, characterized in that, The partition (21) is a movable intelligent partition system that can adjust its position according to real-time sea state data so that the liquid sloshing frequency of at least one of the compartments is tuned to the same frequency as the current dominant vibration mode. The compartment is provided with a damping structure (24), which is at least one of a perforated baffle, a mesh or a column.

5. The aquaculture cage according to claim 1, characterized in that, The aquaculture cage unit (3) is equipped with an underwater lighting unit (4), which can control the lighting intensity, spectrum and light cycle according to a preset program.

6. The aquaculture cage according to claim 1, characterized in that, It also includes an integrated management and control system, which includes: An energy management unit is used to distribute the electrical energy generated by the wind turbine generator set (1) to the electrical equipment of the aquaculture cage unit (3); A vibration monitoring unit is used to monitor the vibration status of the floating platform (2); The aquaculture monitoring unit is used to monitor environmental parameters and / or biological activity status within the aquaculture cage unit (3).

7. The aquaculture cage according to claim 1, characterized in that, The aquaculture cage unit (3) includes a cage frame (31) and a net (32) fixed thereon, wherein the net (32) is a spirally wound curved structure.

8. The aquaculture cage according to claim 7, characterized in that, The mesh (32) is supported and fixed by a spiral skeleton (33), the spiral angle of which is adjustable in the range of 15° to 60°.

9. The aquaculture cage according to claim 1, characterized in that, The aquaculture cage unit (3) is equipped with a feeding unit (5), which includes a feed bin (51), a scattering mechanism (52), and a controller for controlling the operation of the scattering mechanism (52).

10. The aquaculture cage according to claim 9, characterized in that, The feeding unit (5) also includes an environmental sensing module (53), which includes a sensor for detecting water flow speed and direction. The controller is connected to the sensor and can dynamically adjust the feeding strategy based on the feedback information from the sensor.

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