Marine culture net cage structure

Abstract

A net cage structure for offshore aquaculture, the underwater of the float is connected with the bottom ring through the hanging rope, and the bottom ring is connected with the damper through the cable; the bottom ring is annular, and the diameter is slightly smaller than the float, and the damper is arranged below the annular center of the bottom ring. When the net cover is tilted due to wind and wave load, the damper can provide a reverse swing force for the net cover, thereby balancing the tilt of the net cover and the bottom ring, reducing the swing amplitude of the net cover, and accelerating the speed of the whole net cage structure to restore stability. This can effectively reduce the probability of fish injury caused by rubbing the net, reduce the stress reaction that may occur to the fish, thereby improving the quality of fish culture; at the same time, the annular bottom ring is arranged, which will not be affected by the wind and waves to cause the net cover to be wound, can effectively protect the net cover, and improve the stability of offshore aquaculture; when the sea environment is in low tide, the damper and the cable can also protect the bottom of the net cover, avoid the bottom of the net cover from being damaged by friction with the seabed.

Description

Technical Field

[0001] This utility model relates to marine aquaculture equipment, and in particular to a gravity-fed aquaculture cage structure for marine aquaculture. Background Technology

[0002] Wave-resistant gravity-fed aquaculture cages are a new type of aquaculture equipment encouraged by the state for upgrading fish farming. They mainly consist of floating frames, netting, anchoring systems, and sinkers. The netting is the main component of the cage, its primary function being to provide fish with a closed habitat, preventing escape and protection from predators.

[0003] Currently, wave-resistant aquaculture cages use a floating frame at the top and multiple individual hanging hoops at the bottom to extend the netting. While this type of cage has a simple structure, it requires a large number of hanging hoops, which cannot effectively guarantee the overall integrity of the netting when the cage is affected by waves. Especially in severe winds and waves, the hanging hoops may even become entangled with each other or with the netting, causing the netting to deform and break. This can lead to fish escaping or excessive stress, resulting in injury, disease, or death in the fish. Utility Model Content

[0004] The purpose of this invention is to provide a stable marine aquaculture cage structure that reduces the impact of wind and waves on the cage and improves the quality of aquaculture.

[0005] The marine aquaculture cage structure described in this utility model includes a floating float, a bottom ring submerged below the float, the bottom ring being arranged in a ring shape, and the float being connected to the bottom ring at three or more locations by hanging ropes, with a net covering between the float, hanging ropes, and bottom ring; and a damper located below the center of the bottom ring and connected to the bottom ring by a cable.

[0006] The marine aquaculture cage structure described in this utility model features a floating frame that provides buoyancy to the entire cage. The floating frame is connected to a bottom ring underwater via ropes. The bottom ring's weight exceeds its buoyancy, allowing it to sink. A net is installed between the floating frame, ropes, and bottom ring, creating a closed environment for fish to inhabit. A submersible damper is located below the bottom ring and connected to it via cables. In windy and wavey weather, the net, bottom ring, and damper will all sway due to the waves. However, the damper's sway amplitude is much smaller than that of the net. When the net tilts due to wave loads, the damper provides a counter-sway force, balancing the tilt of the net and bottom ring, reducing the net's sway amplitude, and accelerating the entire cage structure's return to stability. This can effectively reduce the chances of fish getting injured by rubbing against the net and reduce the stress response that fish may experience, thereby improving the quality of fish farming. At the same time, the ring bottom ring will not be affected by wind and waves and will not cause the net to get tangled, which can effectively protect the net and improve the stability of marine aquaculture. When the marine environment is at low tide, the damper and cable can also protect the bottom of the net and prevent the bottom of the net from being damaged by friction with the seabed.

[0007] Preferably, the bottom ring is rectangular or circular.

[0008] Preferably, the diameter of the bottom ring is the same as the inner diameter of the float.

[0009] Preferably, the bottom ring includes a tube and a filler installed inside the tube and submerged in water.

[0010] Preferably, the pipe has an air vent at the top and a water injection hole at the bottom.

[0011] Preferably, the bottom ring is provided with hanging holes, and the mesh is connected to the hanging holes by hooks.

[0012] Preferably, the weight of the damper is the same as the weight of the bottom ring.

[0013] Preferably, the damper is a spherical concrete block.

[0014] By setting up the above-mentioned marine aquaculture cage structure, the cages can be more fully enclosed, and the netting's resistance to wind and waves can be improved, thereby improving the quality of aquaculture. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a marine aquaculture cage structure.

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the damper. Detailed Implementation

[0017] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0018] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0019] If the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0020] This utility model proposes a marine aquaculture cage structure.

[0021] The marine aquaculture cage structure of this embodiment includes a floating float 1, a bottom ring 2 submerged below the float, the bottom ring being arranged in a ring, and three or more positions on the bottom ring being connected to the float by ropes 3. A net (not shown) is installed between the float, the ropes, and the bottom ring; and a damper 5, which is located below the center of the bottom ring and is connected to the bottom ring by a cable 6.

[0022] like Figure 1As shown, the floating frame floats on the water surface, providing buoyancy for the entire aquaculture cage. The floating frame is connected to the bottom ring underwater by ropes. The weight of the bottom ring is greater than its buoyancy, allowing it to sink. A net is installed between the floating frame, ropes, and bottom ring, creating a closed environment for fish to inhabit. A damper, also submerged, is located below the bottom ring and connected to it by cables. In windy and wavy weather, the net, bottom ring, and damper will all sway due to the waves. However, the damper's sway amplitude is much smaller than that of the net. When the net tilts due to wave loads, the damper provides a counter-sway force, balancing the tilt of the net and bottom ring, reducing the net's sway amplitude, and accelerating the recovery of the entire cage structure to stability.

[0023] The bottom ring 2 of the aforementioned marine aquaculture cage structure can be rectangular or circular to accommodate different shaped floating frames. The diameter of the bottom ring 2 should be slightly smaller than the inner diameter of the floating frame. This not only directs the stress more towards the center, improving wind and wave resistance, but also facilitates the installation of the bottom ring and floating frame at sea. The bottom ring 2 can be made of pipe 21, such as high-density polyethylene (HDPE) pipe, which is easy to manufacture, inexpensive, and has high corrosion resistance, making it suitable for marine environments. To ensure the pipe can sink, it is filled with a submersible filler 22, increasing the overall weight of the bottom ring. The filler can be a ring anchor chain or concrete with embedded steel wire ropes. Besides providing significant weight, these materials effectively increase the circumferential tensile strength of the bottom ring, thereby improving the structural strength and operational stability of the cage. In addition, the pipe 21 has a vent 23 at the top and a water injection hole 24 at the bottom, allowing seawater to be injected into the pipe to fill the gaps in the inner wall of the pipe and reduce the buoyancy of the bottom ring. Figure 2 As shown.

[0024] The aforementioned marine aquaculture cage structure allows the netting to be tied to the bottom ring with ropes; alternatively, the bottom ring 2 can have hanging holes, and the netting can be connected to the hanging holes via hooks 7—such as spring hooks—making it easier to assemble and disassemble the two.

[0025] The aforementioned marine aquaculture cage structure includes a damper that can be block-shaped or spherical to reduce the impact of waves. The damper can be made of iron or concrete to improve its service life and corrosion resistance. The weight of the damper 5 can be set to be the same as or close to the weight of the bottom ring 2, which improves the balance between the two and allows the damper to better cushion the bottom ring. The length of the cable connecting the bottom ring and the damper can be determined according to the movement frequency of the cage to meet the aquaculture needs of different marine environments.

[0026] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A marine aquaculture cage structure, comprising a floating float (1), characterized in that: There is a bottom ring (2) that is submerged below the floating frame. The bottom ring is arranged in a ring shape, and the floating frame is connected to three or more positions on the bottom ring by hanging ropes (3). A net is installed between the floating frame, hanging ropes and bottom ring. There is also a damper (5) that is set below the center of the bottom ring ring and is connected to the bottom ring by a cable (6).

2. The marine aquaculture cage structure according to claim 1, characterized in that: The bottom ring (2) is rectangular or circular.

3. The marine aquaculture cage structure according to claim 1, characterized in that: The diameter of the bottom ring (2) is the same as the inner diameter of the float.

4. The marine aquaculture cage structure according to claim 1, characterized in that: The bottom ring (2) includes a pipe (21) and a filler (22) installed inside the pipe and submerged in water.

5. The marine aquaculture cage structure according to claim 4, characterized in that: The pipe (21) has an air vent (23) at the top and a water injection hole (24) at the bottom.

6. The marine aquaculture cage structure according to any one of claims 1-5, characterized in that: The bottom ring (2) has a hanging hole, and the mesh is connected to the hanging hole by a hook (7).

7. The marine aquaculture cage structure according to any one of claims 1-5, characterized in that: The weight of the damper (5) is the same as that of the bottom ring (2).

8. The marine aquaculture cage structure according to claim 7, characterized in that: The damper (5) is a spherical concrete block.

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