A net cage and flow reducing mechanism

Abstract

The present application relates to the technical field of aquaculture, and discloses a net cage and a flow reduction mechanism, wherein the net cage comprises a net cage body and a flow reduction mechanism arranged outside the net cage body, and the flow reduction mechanism comprises a torsional damper, a fluid power capturing member and an elastic member which are sequentially connected through a first connecting member; when the fluid power capturing member is impacted by water flow and rotates, the first connecting member connected to both ends of the fluid power capturing member is twisted, and a certain amount of water flow energy can be absorbed; the torsional damper can absorb and dissipate the torsional kinetic energy transmitted by the first connecting member connected thereto; and the first connecting member has a restoring tendency under the action of the elastic member, and can transmit a reverse torque to the fluid power capturing member, further consuming water flow energy. In the present application, the flow reduction mechanism can absorb and consume part of the water flow energy, reduce the flow rate of the water flow directly impacting the net cage body, reduce the risk of the net cage drifting due to the influence of water flow, and ensure the cultivation efficiency of the net cage.

Description

Technical Field

[0001] This invention relates to the field of aquaculture technology, and in particular to a net cage and a flow reduction mechanism. Background Technology

[0002] Aquaculture with fencing refers to the use of fixed or movable fencing structures on water to create a closed or semi-closed space for the concentrated rearing of fish. Generally, it features effective utilization of natural food organisms, strong resistance to wind and waves, high-quality finished products, and an environmentally friendly farming environment, making it an important direction for the future development of my country's fish farming industry. With technological advancements and the increasing strength of aquaculture enterprises, various forms of large-scale fencing aquaculture have emerged, including floating rope type, double-circular pipe pile type, large-span double-circular pipe pile type, and fence-type dike enclosure aquaculture. These are mainly distributed in coastal provinces such as Zhejiang, Fujian, and Shandong, and are used for the rearing of fish species such as large yellow croaker, croaker, grouper, and bream.

[0003] Among them, floating rope cages, as an easy-to-install structural form, do not require divers to descend to the seabed for installation compared to other cage structures, and have fewer limitations in expanding into deeper waters, thus attracting widespread attention from enterprises and fishermen. Floating rope cages are mainly connected to the underwater cage structure via floats suspended in the water, providing a relatively closed and controlled growth environment for aquatic organisms such as fish and shellfish. They play an important role in improving aquaculture efficiency, protecting aquatic resources, and mitigating the impact on the marine environment.

[0004] However, floating rope cages still face many problems in practical applications, with drifting being one of the most common issues. The structure of floating rope cages makes them susceptible to water flow, leading to overall drifting. Frequent or significant drifting not only reduces the stability of the cage and its internal aquaculture environment, disrupting the relatively stable living environment of the fish and potentially triggering stress responses that affect their growth and health, but also increases the difficulty of daily management tasks such as feeding, disease monitoring, and harvesting, resulting in lower aquaculture efficiency in floating rope cages. Summary of the Invention

[0005] This invention provides a net cage and a flow reduction mechanism, which solves the technical problem that floating rope net cages are easily affected by water flow and drift, resulting in low aquaculture efficiency.

[0006] The first aspect of the present invention provides a cage, including a cage body and a flow reduction mechanism disposed on the outside of the cage body;

[0007] The flow reduction mechanism includes a torsional damper, a hydrodynamic capture component, and an elastic component connected in sequence via a first connector.

[0008] The hydrodynamic capture device is used to convert the captured fluid energy into energy that drives its own rotation.

[0009] Optionally, the cage body is an open-top box;

[0010] The cage body includes a frame, a mesh cover, and a cage bottom;

[0011] The mesh is installed on the side of the frame;

[0012] The bottom of the box is installed on the bottom surface of the frame.

[0013] Optionally, the framework includes at least three sets of framework components;

[0014] The frame assembly includes a main float, a second connector, and an anchor body connected in sequence.

[0015] The main floats of each group of frame components are connected in a ring shape in sequence by a third connector;

[0016] Each of the third connectors is provided with at least one float;

[0017] The lower part of the mesh is fixedly connected to the bottom of the box, and the mesh is fixedly connected to each of the second connecting parts respectively;

[0018] The bottom of the box is fixedly connected to each of the anchor bodies;

[0019] The anchor is fixed to the bottom of the water.

[0020] Optionally, at least one of the main floats is equipped with a typhoon-resistant power supply and communication relay platform at its upper end, and the other main floats are equipped with floating platforms at their upper ends.

[0021] Optionally, the cage may further include a net lifting mechanism;

[0022] The mesh garment includes a first mesh garment and a second mesh garment;

[0023] The first mesh is installed on the side of the frame, and the lower mesh of the second mesh is connected to the first mesh;

[0024] The mesh lifting mechanism includes a slide rail and a fourth connecting member slidably disposed on the slide rail;

[0025] The slide rail is installed on the side of the cage body at a position higher than the first mesh, and the sliding direction of the fourth connector is perpendicular to the horizontal plane;

[0026] The fourth connector is connected to the top of the second mesh.

[0027] Optionally, the main float connected to the floating platform is a telescopic structure.

[0028] Optionally, the hydrodynamic capture element is an S-shaped impeller.

[0029] Optionally, the S-shaped wheel includes two blades and two end plates fixedly disposed at both ends of the blades;

[0030] The blade has a semi-circular arc cross-section in the radial direction of the S-shaped rotor and is spiral in the axial direction of the S-shaped rotor;

[0031] The two blades have an S-shaped cross-section in the radial direction of the S-shaped rotor.

[0032] Optionally, the bottom of the box is a cement blanket.

[0033] A second aspect of the present invention provides a flow reduction mechanism, comprising: a torsional damper, a hydrodynamic capture element, and an elastic element connected in sequence via a first connecting member;

[0034] The hydrodynamic capture device is used to convert the captured fluid energy into energy that drives its own rotation.

[0035] As can be seen from the above technical solutions, the present invention has the following advantages:

[0036] This invention provides a net cage and a flow reduction mechanism. The net cage includes a net cage body and a flow reduction mechanism disposed on the outside of the net cage body. The flow reduction mechanism includes a torsional damper, a hydrodynamic capture component, and an elastic component connected in sequence via a first connecting member. When the hydrodynamic capture component in the flow reduction mechanism disposed on the outside of the net cage body is impacted by water flow, the hydrodynamic capture component rotates under the action of the water flow driving force, and drives the first connecting member connected to its two ends to undergo torsional motion, which can absorb a certain amount of water flow energy. The first connecting member connected to the torsional damper transmits the torsional force to the torsional damper, and the torsional damper absorbs and dissipates the energy carried by the torsional force. As the first connecting member contracts in length after torsion to a certain extent, the first connecting member connected to the elastic component stretches the elastic component, and the elastic force applied by the elastic component gives the first connecting member a certain tendency to recover. The reverse torque of the first connecting member to the hydrodynamic capture component will counteract the positive driving torque generated by the water flow impact, further consuming the water flow energy. In this invention, the flow reduction mechanism can absorb and consume part of the water flow energy, reduce the flow velocity of the water flow that directly impacts the cage body, reduce the risk of the cage drifting due to the influence of the water flow, and ensure the aquaculture efficiency of the cage. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A schematic diagram of a wire mesh cage provided in an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the cage body underwater, provided in an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the flow reduction mechanism provided in an embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of the S-shaped rotor provided in an embodiment of the present invention;

[0042] Figure 5 This is a schematic diagram of the structure of the cage body provided in an embodiment of the present invention;

[0043] Figure 6 This is a schematic diagram of the structure of the mesh lifting mechanism provided in an embodiment of the present invention. Detailed Implementation

[0044] This invention provides a net cage and a flow reduction mechanism to solve the technical problem that floating rope net cages are easily affected by water flow and drift, resulting in low aquaculture efficiency.

[0045] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0046] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] Please see Figures 1 to 6 The first embodiment of the present invention provides a cage, including a cage body 1 and a current reduction mechanism disposed on the outside of the cage body 1;

[0049] The flow reduction mechanism includes a torsional damper 24, a hydrodynamic capture element 23, and an elastic element 21, which are connected in sequence via a first connector 22.

[0050] The hydrodynamic capture component 23 is used to convert the captured fluid energy into energy that drives its own rotation.

[0051] It should be noted that the net cage body 1 refers to the main space of the net cage, which is the space in which fish or other aquatic organisms raised in the net cage live and grow. It can be a square column, a multi-dimensional column, a cylinder, a boat shape, a saucer shape, a sphere, or other shapes. In order to facilitate the arrangement of the flow reduction mechanism, the net cage body 1 is preferably shaped so that its side is perpendicular to the horizontal plane.

[0052] The flow reduction mechanism is located on the outside of the net cage body 1. All components and the first connecting parts 22 connecting the components are located on the same straight line. The first connecting parts 22 connecting the components are naturally straight when the flow reduction mechanism is not affected by the water flow. The flow reduction mechanism is preferably set vertically on the outside of the net cage body 1 so that the water flow in all directions can directly act on the fluid capture part 23. At the same time, the torsional damper 24 can be located at the upper end of the flow reduction mechanism and the elastic part 21 can be located at the lower end of the flow reduction mechanism, or the torsional damper 24 can be located at the lower end of the flow reduction mechanism and the elastic part 21 can be located at the upper end of the flow reduction mechanism. No specific limitation is made here.

[0053] The two ends of the flow reduction mechanism are fixedly connected to the net cage body 1. The two ends of the flow reduction mechanism must be subject to sufficiently strong external constraints to ensure its energy dissipation effect. There is at least one flow reduction mechanism. When multiple flow reduction mechanisms are set, they can be evenly distributed on all sides of the net cage body 1 to ensure that the water flow impact on the net cage body 1 in all directions can be reduced. There is at least one hydrodynamic capture element 23 on each flow reduction mechanism. If multiple hydrodynamic capture elements 23 are set on each flow reduction mechanism, the multiple hydrodynamic capture elements 23 can be directly connected in sequence or connected in sequence through the first connector 22. The multiple hydrodynamic capture elements 23 rotate in the same direction when impacted by water flow in the same direction.

[0054] The first connector 22 is a rope-like component that connects various parts in the flow reduction mechanism. It is preferably any rope-like component that will twist and shorten its overall length after being twisted around its own axis to a certain extent, such as ropes, cables, chains, strips, etc. of various materials. More preferably, it is a polyester cable. Polyester cables have good wear resistance and UV resistance, and are not easy to absorb water. Their weight does not change much in a humid environment, and they can maintain good strength in an underwater environment. The braided structure of the cable makes it easier for torsional stress to accumulate inside it.

[0055] In this invention, an elastic element refers to a device capable of elastic deformation, that is, deforming under force and returning to its original shape and size after the external force is removed, such as various springs (tension springs, compression springs, torsion springs, etc.) and rubber parts; a torsional damper refers to a device that absorbs and reduces torsional force based on the damping effect and the principle of elastic deformation. The damping effect refers to the phenomenon that during mechanical vibration, the energy of the vibration system is gradually converted into heat energy and dissipated due to the resistance of the medium; when the first connecting part 22 connected to the torsional damper 24 is subjected to external torque and torsional forces, the torsional damper 24 will correspondingly bear and moderately reduce the torsional force. The damping elements inside will undergo relative slippage and friction during the torsional process, consuming some energy to prevent the transmission of excessive torsional force; once the external torque disappears or decreases to a certain extent, the torsional damper 24 will automatically restore the rotating part to its original position, achieving self-resetting; liquid dampers, gas dampers, electromagnetic dampers, friction dampers, and other types of dampers can be used as the torsional damper 24 in this invention.

[0056] The hydrodynamic capture device 23 is equipped with multiple planar or curved blades. Water flow from all directions can directly act on the capture surface of some blades, causing the hydrodynamic capture device 23 to rotate around its central axis under the action of the water flow. The hydrodynamic capture device 23 can be a flat plate impeller, a vertical shaft impeller, an S-shaped impeller, or other devices that can convert the captured fluid energy into energy to drive its own rotation. Among them, the S-shaped impeller uses the resistance difference when two blades are impacted by fluid in the same direction to make itself rotate. During the operation of the S-shaped impeller, the water flow acts on the two arcs... The S-shaped blades, due to the same convection direction at the same time, have one concave surface and one convex surface, with the concave surface being the capture surface. The force exerted by the water flow on the concave surface is greater than the force exerted on the convex surface, creating a torque difference between the two blades, thereby driving the S-shaped impeller to rotate. However, the two blades of a conventional S-shaped impeller are semi-cylindrical surfaces. When the angle between the water flow direction and the blade diameter is small, the resistance difference between the two blades is small, making it difficult for the water flow to drive the S-shaped impeller. Therefore, in a specific embodiment, the hydrodynamic capture component 23 is a spiral S-shaped impeller, the specific structure of which is as follows: Figure 4 As shown, the spiral S-shaped wheel includes two blades 231 and end plates 232 fixedly disposed at both ends of the blades 231. The cross section of the blades 231 in the radial direction of the S-shaped wheel is semi-circular and spiral in the axial direction of the S-shaped wheel. The cross section of the two blades 231 in the radial direction of the S-shaped wheel is S-shaped. The spiral S-shaped wheel can avoid the situation where the resistance difference between the two blades is small. The end plates 232 are coaxially connected to the first connecting member 22 or the end plates of other S-shaped wheels.

[0057] In the practical application of the net cage provided in this embodiment, when the hydrodynamic capture member 23 in the flow reduction mechanism located outside the net cage body is impacted by water flow, the hydrodynamic capture member 23 rotates under the positive driving force generated by the water flow, and drives the first connecting member 22 connected at both ends to undergo torsional motion, which can absorb a certain amount of water flow energy; wherein the first connecting member 22 connected to the torsional damper 24 transmits the torsional force to the torsional damper 24, and the torsional damper 24 absorbs and dissipates the energy carried by the torsional force; while the first connecting member 22 connected to the elastic member 21 drives one end of the elastic member 21 to begin to twist, and the elastic member 21... The elastic element 21 generates a torsional force (rotational force around the axis of the elastic element 21) attempting to restore its non-torsional state and applies it to the first connecting element 22. Since the first connecting element 22 twists to a certain extent and its overall length contracts, a tensile force (along the axis of the elastic element 21) is applied to it. Both the torsional force and the tensile force can cause the first connecting element 22 to have a certain tendency to return to its original state. This tendency of the first connecting element 22 to return to its original state generates a reverse torque that counteracts the rotation of the hydrodynamic capture element 23. This reverse torque counteracts the positive driving torque generated by the water flow impact, further consuming water flow energy. In this embodiment, the flow reduction mechanism can absorb and consume part of the water flow energy, reducing the flow velocity of the water flow directly impacting the cage body, lowering the risk of the cage drifting due to water flow influence, and ensuring the aquaculture efficiency of the cage.

[0058] In addition, the flow reduction mechanism is a purely mechanical device with a simple structure, saving equipment and maintenance costs. The flow reduction mechanism is laid or added to the outside of the net cage body 1, and the flow reduction effect is balanced. It will not interfere with or hinder the normal aquaculture activities and management operations inside the net cage. Moreover, it can be designed, manufactured and constructed as an integral part of the net cage body 1, and has high reliability.

[0059] In a preferred embodiment, the cage body 1 is a cage with an open top surface;

[0060] The cage body includes a frame, a mesh cover 12, and a cage bottom 13;

[0061] Mesh 12 is installed on the side of the frame;

[0062] Box bottom 13 is installed on the bottom surface of the frame.

[0063] It is understood that the netting 12 may include multiple openings, each located on a different side of the frame, or it may include only one opening that surrounds all sides of the frame; no specific limitation is made here. The netting 12 may be made of any kind of synthetic fiber, preferably a netting woven from polyester cable. All-polyester cable netting is corrosion-resistant, UV-resistant, and does not easily absorb water. It is not easily deformed when immersed in water for a long time, and the surface of the net is relatively smooth, making it difficult for algae, shellfish, and other aquatic organisms to attach, thus reducing the chance of biofouling.

[0064] The bottom of the cage 13 is a solid structure, which can ensure stability underwater when the cage is submerged in water, reduce the risk of the cage drifting due to water flow and waves, and improve the stability of the aquaculture environment. Furthermore, the bottom of the cage 13 can be made of cement blanket or other water-hardening materials. Cement blanket is a flexible fabric impregnated with dry concrete mixture. When it comes into contact with water, the dry concrete mixture in it will quickly harden into a concrete layer. Using cement blanket as the bottom of the cage 13 can facilitate the transportation and assembly of the cage before it is launched into the water.

[0065] In a more preferred embodiment, the frame includes at least three sets of frame components;

[0066] The frame assembly includes a main float 111, a second connector 112, and an anchor 113 connected in sequence.

[0067] The anchor body 113 of each frame assembly is fixed in the water bottom, and the main float of each frame assembly is connected in sequence to form a ring through the third connector 114, so that a columnar aquaculture space is formed inside the frame.

[0068] Each third connector 114 is provided with at least one float 115, which is used to tension the main cable. The float 115 can be tied to the third connector 114 by float ropes such as nylon ropes or polyethylene ropes. The distance between two adjacent floats 115 or between the float 115 and the main float 111 is preferably 2m to 3m.

[0069] The lower strip of the mesh 12 is fixedly connected to the bottom of the box 13, and the mesh 12 is fixedly connected to each of the second connectors 112 respectively; wherein when the mesh 12 includes multiple openings respectively set on different sides of the frame, the hanging rope and two side strips of each mesh opening are respectively tied to the corresponding positions of the two second connectors 112 on the corresponding side.

[0070] The bottom of the box 13 is fixedly connected to each anchor body 113; the anchor body 113 is preferably a concrete anchor, which is easy to fix to the bottom of the water.

[0071] It is understood that the main float 111 refers to the floating material or device used to support the cage frame and maintain its shape, and can provide traction for the second connector 112; the main float 111 should have a certain height and its lower end should be able to provide sufficient buoyancy so that it can maintain the same upright state at different water levels, and ensure that the second connector 112 connected to it can remain straight.

[0072] Since water absorption by the connecting parts of the net cage would make the entire cage heavy and increase the difficulty of maintenance and management, the second connecting part 112 and the third connecting part 114 can be made of rope-like parts that are high-strength, corrosion-resistant, and do not easily absorb water. The third connecting part 114 is preferably made of rope-like parts with a density lower than water, such as polypropylene rope. Polypropylene has the lowest density among all common synthetic fibers, approximately 0.91 g / cm³. 3 It can float in water, does not absorb water and has good corrosion resistance. When used with the float 115 set on it, it can improve the overall stability of the cage. The second connector 112 is preferably made of synthetic fiber such as nylon rope or polypropylene rope.

[0073] It should be noted that the cage body 1 provided in this preferred embodiment is a floating rope cage. The existing floating rope cage structure is relatively soft and easily deformed or damaged by external forces, especially in severe sea conditions, where it is easily impacted by water currents and waves. In contrast, the cage body 1 provided in this preferred embodiment has multiple frame components and multiple third connectors 114 equipped with buoys connected to form a flexible frame. The cage frame is pulled by multiple supports through the connection of the second connector 112 and the anchor 113, so that the frame is mainly subjected to tensile and compressive forces, which helps to improve the stress state and ensure the stability and safety of the submersible cage in severe sea conditions. At the same time, the ring-shaped floating rope loops formed by the connection of each third connector 114 with the frame components pull the upper flexible cage body, reducing the drift of the net. Furthermore, the combination of the solid bottom 13 and the flexible frame gives the cage body 1 good rigid-flexible characteristics, which can withstand, mitigate and offset the energy of waves and currents, effectively reducing the impact of water currents on the cage aquaculture area.

[0074] like Figure 1 and Figure 3 As shown, when there are multiple flow reduction mechanisms, the upper end of each flow reduction mechanism can be fixedly connected to the cage body 1, and the lower end of each flow reduction mechanism is connected through a connecting plate 25. The two ends of the connecting plate 25 are then connected to the cage body 1. In this preferred embodiment, specifically, the upper end of each flow reduction mechanism provided on the same side of the cage body 1 is fixedly connected to the third connecting member 114 on that side, and the two ends of the connecting plate 25 are fixedly connected to the two anchors 113 corresponding to that side, so that the positional relationship between the flow reduction mechanism and the cage body 1 can be kept stable.

[0075] Furthermore, in this invention, the surfaces of the netting 12, the first connector 22, the second connector 112, and the third connector 114 can all be coated. The coating can be a low surface energy coating, such as fluoropolymers or silicone resins, to reduce the damage to the net cage caused by aquatic organisms attaching to it.

[0076] Furthermore, at least one main float is equipped with a typhoon-resistant power supply and communication relay platform 14, and the other main floats are equipped with floating platforms 15.

[0077] Understandably, the floating platform 15 can serve as an operating platform for staff to complete tasks such as feeding and fish collection, facilitating aquaculture production management. Feeding ports can be installed on the platform. The typhoon-resistant power supply and communication relay platform 14 combines energy supply and communication relay functions. The overall structure adopts typhoon-resistant structures such as semi-submersible and fully suspended fixed-depth. A monitoring system can be introduced on the platform. The monitoring system uses sensors to monitor the status of the net cages in real time, including water flow, temperature, and drift, in order to improve the real-time control and management efficiency of the aquaculture environment.

[0078] Accordingly, the main float 111 connected to the floating platform 15 preferably adopts a telescopic structure that can extend and retract with the water level. For example, the upper and lower ends can slide relative to each other. The lower end needs to provide sufficient buoyancy to support the overall weight of the main float 111 and pull the second connecting piece 112. The upper end and the floating platform 15 can adjust their own height with the water level so that the floating platform 15 always floats on the water surface.

[0079] Because fish raised in floating rope net cages are easily frightened by severe wave conditions such as typhoons and jump out from the top edge of the net cage frame, and foreign objects can also easily invade from the top edge of the net cage frame, and water level changes make it impossible to prevent the height of the net from preventing the escape of farmed fish or the invasion of foreign objects at all times, in a more preferred embodiment, the net cage provided by the present invention also includes a net lifting mechanism 3.

[0080] Mesh garment 12 includes a first mesh garment and a second mesh garment;

[0081] The first mesh is installed on the side of the frame, and the lower part of the second mesh is connected to the first mesh.

[0082] The mesh lifting mechanism 3 includes a slide rail 32 and a fourth connecting member slidably disposed on the slide rail 32;

[0083] The slide rail 32 is installed on the side of the net cage body at a position higher than the first net, and the sliding direction of the fourth connector is perpendicular to the horizontal plane; in a specific embodiment, the number of net lifting mechanisms 3 is the same as the number of main floats 111, and the slide rail 32 is installed on the side of each main float 111 of the net cage body 1 through the connecting seat 31.

[0084] The fourth connector is connected to the upper part of the second net. The fourth connector can pull the second net to rise and fall automatically with the waves when the water flows, reducing the risk of farmed fish escaping or foreign objects invading. When the fourth connector slides to the lowest position, the second net hangs down and partially overlaps with the first net. When the fourth connector slides upward, the second net is pulled to a position higher than the first net.

[0085] The fourth connector may specifically include a slider 33 and an annular member 34 disposed on the slider. The slider 33 can slide on the slide rail as the water flows up and down, while the annular member 34 can be easily tied and connected to the second mesh.

[0086] The above provides a detailed description of a cage provided by the present invention, which has the advantages of reasonable structural layout, easy installation and construction, detachable assembly and disassembly, excellent wind and wave resistance, and cost saving.

[0087] Please see Figures 3 to 4 The second embodiment of the present invention provides a flow reduction mechanism, comprising: a torsional damper 24, a hydrodynamic capture member 23 and an elastic member 21 connected in sequence by a first connecting member 22;

[0088] The hydrodynamic capture component 23 is used to convert the captured fluid energy into energy that drives its own rotation.

[0089] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific features of the flow reduction mechanism described above can be found in the corresponding descriptions in the foregoing cage embodiments, and will not be repeated here. It is understood that the flow reduction mechanism provided in this embodiment can be used in various cages or other underwater facilities and equipment that are susceptible to water flow and require flow reduction. The flow reduction mechanism provided in this embodiment is a purely mechanical device, saving operating and maintenance costs. Furthermore, the flow reduction mechanism provided in this embodiment, when laid or added around the equipment or facility, provides a balanced flow reduction effect, without interfering with or hindering the normal operation of the equipment or facility, and exhibits high reliability.

[0090] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wire mesh cage, characterized in that, It includes a cage body and a current-reducing mechanism disposed on the outside of the cage body; The flow reduction mechanism includes a torsional damper, a hydrodynamic capture component, and an elastic component connected in sequence via a first connector. The fluid dynamic capture component is used to convert the captured fluid energy into energy to drive its own rotation, and after rotation, it drives the first connecting component connected to its two ends to undergo torsional motion. The hydrodynamic capture component is an S-shaped rotor; The first connector is a rope-like component that twists and shortens its overall length after being twisted about its own axis to a certain extent.

2. The cage according to claim 1, characterized in that, The cage body is an open-top box; The cage body includes a frame, a mesh cover, and a cage bottom; The mesh is installed on the side of the frame; The bottom of the box is installed on the bottom surface of the frame.

3. The cage according to claim 2, characterized in that, The framework includes at least three sets of framework components; The frame assembly includes a main float, a second connector, and an anchor body connected in sequence. The main floats of each group of frame components are connected in a ring shape in sequence by a third connector; Each of the third connectors is provided with at least one float; The lower part of the mesh is fixedly connected to the bottom of the box, and the mesh is fixedly connected to each of the second connecting parts respectively; The bottom of the box is fixedly connected to each of the anchor bodies; The anchor is fixed to the bottom of the water.

4. The cage according to claim 3, characterized in that, At least one of the main floats is equipped with a typhoon-resistant power supply and communication relay platform at its upper end, and the other main floats are equipped with floating platforms at their upper ends.

5. The wire mesh cage according to claim 2, characterized in that, It also includes a mesh garment lifting mechanism; The mesh garment includes a first mesh garment and a second mesh garment; The first mesh is installed on the side of the frame, and the lower mesh of the second mesh is connected to the first mesh; The mesh lifting mechanism includes a slide rail and a fourth connecting member slidably disposed on the slide rail; The slide rail is installed on the side of the cage body at a position higher than the first mesh, and the sliding direction of the fourth connector is perpendicular to the horizontal plane; The fourth connector is connected to the top of the second mesh.

6. The wire mesh cage according to claim 4, characterized in that, The main float connected to the floating platform is a telescopic structure.

7. The cage according to claim 1, characterized in that, The S-shaped wheel includes two blades and two end plates fixedly disposed at both ends of the blades; The blade has a semi-circular arc cross-section in the radial direction of the S-shaped rotor and is spiral in the axial direction of the S-shaped rotor; The two blades have an S-shaped cross-section in the radial direction of the S-shaped rotor.

8. The cage according to claim 2, characterized in that, The bottom of the box is made of cement blanket.

9. A flow reduction mechanism, characterized in that, include: The torsional damper, the hydrodynamic capture component, and the elastic component are connected in sequence via the first connector; The fluid dynamic capture component is used to convert the captured fluid energy into energy to drive its own rotation, and after rotation, it drives the first connecting component connected to its two ends to undergo torsional motion. The hydrodynamic capture component is an S-shaped rotor; The first connector is a rope-like component that twists and shortens its overall length after being twisted about its own axis to a certain extent.

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