An anti-ice protection device and its application

Abstract

The present invention belongs to the technical field of offshore aquaculture cages and relates to an anti-ice protection device and its application. The device comprises a bow-shaped main body with a curved front end; a shock absorber connected to the inner side of the main body, comprising a damper and a spring, with the spring wound around the damper; a chain device disposed at the end of the main body, comprising a plurality of fixings and a chain, with the fixings fixedly connected to the end of the main body; a mooring system with a mooring cable connected to the main body at one end and to an anchor chain and a high-grip anchor at the other end, and an embedded buoy is also provided on the mooring cable. The device is applied to offshore aquaculture cages and is easy to install and detach. It can be nested neatly on the upstream side of the cage, blocking ice drifts carried by the current and directing them to the sides to prevent them from accumulating around the cage. The device can solve the problem of ice drift in winter for marine equipment in use and can be disassembled in ice-free seasons to reduce the equipment load. If properly stored, it can be used for long periods of time.

Description

Technical Field

[0001] The present invention belongs to the technical field of offshore aquaculture cages, and in particular relates to an anti-drift ice protection device and its application. Background Art

[0002] Humanity's approach to obtaining marine aquatic products is gradually shifting from fishing to aquaculture. Marine aquaculture, a specialized branch of aquaculture, provides a significant amount of high-quality protein for the public, making it a crucial supplement to my country's food security. Cage aquaculture, a key form of marine aquaculture, is plagued by winter drift ice in my country's Yellow Sea and Bohai Sea regions. These regions, encompassing Liaodong Bay, Bohai Bay, Laizhou Bay, and the northern Yellow Sea, experience significant winter ice formation. This ice, reaching a thickness of 5 to 10 cm, is driven by waves and currents, constantly impacting aquaculture cages. This ice accumulates around the cages, increasing the load and damaging the cage structure, leading to tilting or damage. This can easily cause fish to escape, endangering the interests of aquaculture operators and causing economic losses.

[0003] Anti-ice protection devices are used on equipment such as offshore platforms, photovoltaic power generation, and navigation lights. However, previous anti-ice technologies incorporated anti-ice structures into the equipment's structural design. Depending on where the equipment contacts the water surface, pointed supports or ice-breaking blades and spikes were added to the structure. These anti-ice technologies and devices have limitations and drawbacks. Because the anti-ice devices are integrated into the main structure of the equipment, the loads caused by ice drift are directly applied to the equipment. Aquaculture cages, on the other hand, are made of slender rods and their nets are flexible structures, making it difficult to directly design anti-ice devices. Furthermore, the cages have a large contact area with the water surface and limited load-bearing capacity. Therefore, existing anti-ice technologies and devices are not suitable for cage aquaculture, and investment in the development of new equipment is necessary to address the winter ice drift problem. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem of drift ice disasters encountered in seawater aquaculture cages in the prior art, and proposes an anti-drift ice protection device and its application. The device is applied to offshore aquaculture cages and is an easy-to-install and detachable anti-drift ice protection device. The device can be well nested on the upstream side of the cage to block the drift ice coming with the current and guide the drift ice to both sides, so that it drifts away with the current in time, preventing the drift ice from accumulating around the aquaculture cage and protecting the safety of the cage structure. The device can not only solve the drift ice problem in winter for marine equipment in use, but can also be disassembled in the season without drift ice to reduce the equipment load. If stored properly, it can be used for a long time.

[0005] The technical solution of the present invention is:

[0006] The present invention provides an anti-ice flow protection device, comprising:

[0007] The main body is in the shape of a ship's bow, and its front end face is a curved surface structure, forming an open water surface;

[0008] The shock absorber is connected to the inner side of the main body. The shock absorber includes multiple groups of dampers and springs, and the springs are wound around the dampers;

[0009] The chain device is arranged at the end of the main body. The chain device consists of several fixing parts and a chain, and the fixing parts are fixedly connected to the end of the main body;

[0010] The mooring system includes a mooring cable. One end of the mooring cable is connected to the main body, the other end is connected to an anchor chain and a large holding power anchor, and an embedded float is also arranged on the mooring cable.

[0011] Further, the included angle between the tangent of the curved surface and the horizontal plane is 25° to 35°, and the degree of curvature of the curved surface gradually decreases from the center line of the curved surface to both sides until the end is a smooth plane.

[0012] The included angle between the tangent of the curved surface and the horizontal plane can be any angle within the range of 25° to 35°, for example, it can be 25°, 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33°, 34° or 35°, etc., but is not limited to the listed values, and other unlisted values within this range are equally applicable.

[0013] Taking the range of curvature k to represent the degree of curve curvature, the average curvature H of the curved surface represents the degree of curvature of the curved surface;

[0014] Further, when the included angle between the tangent of the curved surface and the horizontal plane is 30°, the center line curvature is k, 0 < k < 0.5, and when the maximum curvature k of the center line of the curved surface is 0.29, the thickness of the curved surface is 0.8, and the average curvature H of the curved surface is 0.15 ± 0.14. max When the center line curvature of the curved surface is 0 < k < 0.5, for example, k can be 0.05, 0.1, 0.15, 0.18, 0.2, 0.26, 0.3, 0.32, 0.37, 0.4 or 0.45, etc., but is not limited to the listed values, and other unlisted values within this range are equally applicable.

[0015] The center line curvature of the curved surface is 0 < k < 0.5, for example, k can be 0.05, 0.1, 0.15, 0.18, 0.2, 0.26, 0.3, 0.32, 0.37, 0.4 or 0.45, etc., but is not limited to the listed values, and other unlisted values within this range are equally applicable.

[0016] Further, the sides of both ends of the main body are trapezoidal shapes, grooves are provided at the ends of the ends, the two grooves are arranged opposite to each other, and rubber buffer pads are arranged in the grooves.

[0017] Further, the chain device consists of at least 3 fixing parts and a chain, and the fixing parts are fixedly installed at the positions of the grooves; the fixing parts consist of fixing rods and fixing plates, and the fixing rods and the fixing plates are connected by bolts.

[0018] Furthermore, the shock absorber also includes partitions at both ends, and multiple groups of dampers and springs are arranged between the two partitions; the damper is composed of a connecting body and a moving rod, and the moving rod is arranged inside the connecting body and can move inside the connecting body; when the shock absorber is subjected to force, the moving rod is squeezed into the connecting body and the spring contracts.

[0019] Furthermore, the shock absorber is arranged on the inner side of the front end of the main body, and the number is greater than or equal to 1; the shock absorber includes at least 4 groups of dampers and springs.

[0020] Furthermore, the mooring system is a multi-section structure, wherein the upper section is a mooring cable connecting the main body and the embedded buoy, the middle section uses a mooring cable to connect the embedded buoy and the anchor chain, and the lower section uses an anchor chain to connect the high-holding anchor; the mooring cable is made of rigid material.

[0021] The present invention also protects an application of the anti-drift ice protection device, characterized in that the application includes using the anti-drift ice protection device in marine equipment, and the marine equipment includes aquaculture cages.

[0022] The present invention further protects an offshore aquaculture cage, which is equipped with the anti-ice drift protection device.

[0023] Furthermore, the anti-drift ice protection device is installed on one side of the cage according to the direction of the ocean current, the shock absorber is fitted to the periphery of the cage, and the end of the main body is dynamically connected to the periphery of the cage through a chain device.

[0024] The above-mentioned offshore aquaculture cage equipped with an anti-drift ice protection device, firstly, utilizes the interaction force between the device and the cage to make the device push water to change the direction of the surrounding ocean current and ultimately cause the drift ice to flow around; secondly, the main body is kept dynamically connected to the cage through a chain device and a groove to reduce the load on the cage; thirdly, a steel rope, i.e. a mooring cable, is used to connect the underwater embedded buoy to cut the drift ice while stabilizing the device to prevent the cable from freezing.

[0025] Beneficial effects of the present invention:

[0026] (1) The anti-drift ice protection device provided by the present invention has a main body in the shape of a bow, and its drift ice action area is a curved surface structure. The curved surface has a good flow-guiding effect. The present invention uses the curved surface structure to realize the anti-drift ice function of the device, change the direction of the ocean current around the cage, and promote the flow of ice to flow around, thereby achieving the effect of breaking up the drift ice; with the assistance of the shock absorber, the device of the present invention can realize a reciprocating water-pushing effect within a certain range, thereby changing the direction of the ocean current, guiding the drift ice to both sides, and finally drifting away with the ocean current, thereby solving the problem of drift ice accumulation around the aquaculture cage.

[0027] (2) The device of the present invention has the functions of easy assembly and disassembly, and can be directly applied to the net cages that have been put into production. The device can also be dismantled and stored in the warehouse during the ice-free period (summer and autumn) or in the year, which can reduce the load on the net cages while ensuring the long-term use of the device.

[0028] (3) This device can be installed on one side of the cage according to the direction of the ocean current in the aquaculture area to block the drift ice that comes with the ocean current and guide the drift ice to both sides; the device is equipped with an improved mooring system. Compared with the traditional mooring device, the mooring system of this device has the characteristics of strong stability, ice cutting and low temperature resistance by connecting the underwater embedded buoy with steel ropes. While ensuring the stability of the device, it prevents the collision of drift ice and the problem of freezing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of the anti-ice flow protection device provided by the present invention;

[0030] Figure 2 This is a cross-sectional view of the curved surface structure of the main part of the anti-ice protection device;

[0031] Figure 3 is a schematic diagram of the structure of the groove;

[0032] Figure 4 It is a structural diagram of the embedded float;

[0033] Figure 5 is a structural diagram of the shock absorber;

[0034] Figure 6 It is a structural diagram of the chain device;

[0035] Figure 7 This is a schematic diagram of the overall structure of aquaculture cages equipped with anti-drift ice protection devices;

[0036] Figure 8 This is a top view of aquaculture cages equipped with anti-ice protection devices;

[0037] Figure 9 This is a side view of a culture cage equipped with an anti-ice protection device;

[0038] Figure 10 This is a schematic diagram of the overall structure of the anti-drift ice protection device connected to the square cage group;

[0039] In the above figures, 1. high-holding anchor; 2. anchor chain; 3. mooring rope; 4. embedded buoy; 41. connecting ring; 42. buoy body; 5. main body; 6. shock absorber; 61. partition; 62. connector; 63. spring; 64. moving rod; 7. chain device; 71. fixing rod; 72. fixing plate; 73. chain; 8. groove; 81. rubber buffer pad. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] In order to further understand the present invention, the present invention will be further described with reference to the accompanying drawings and embodiments.

[0042] Example 1

[0043] like Figure 1 As shown, this embodiment provides an anti-drift ice protection device. The device consists of four parts: a bow-shaped main body 5, a vibration damper 6, a chain device 7, and a mooring system. The main body 5 resembles a bow, with a semi-elliptical upper surface and a lower surface that is half of a regular hexagon. The front end of the middle portion between the upper and lower surfaces is a curved surface, while the side surfaces are trapezoidal. The vertices of the regular hexagon on the lower surface are connected by a line with the vertices of the elliptical structure, forming an open water surface.

[0044] In order to enhance the water pushing and ice guiding function of the anti-ice flow protection device, the main body 5 is set to a curved surface structure, such as Figure 2 As shown, the curvature k of a point on the centerline of the surface is calculated using the curve formula. The range of k can represent the curvature of the centerline of the surface. The curvature of the surface gradually decreases from the centerline to both sides until the end is a smooth plane k≈0. The average curvature of the entire surface is represented by H. Let y = f(x), y is the function that constructs the surface curve, and y = f(x) is second-order differentiable. Then the slope of the tangent line of the curve at the point (x, y(x)) is:

[0045] y′=tanα

[0046] Where α is the angle between the tangent line of the surface and the horizontal plane, and y' is the first derivative of the function y with respect to x;

[0047] Curve curvature formula:

[0048]

[0049] Formula for mean curvature of a surface:

[0050]

[0051] Where k is the curvature of the curve at point (x,y(x)), and y' and y" are the first and second derivatives of the function y with respect to x, respectively.

[0052] The angle between the tangent line of the curved surface and the horizontal plane of the device of the present invention is between 25° and 35°. The calculation result of the above formula shows that when the angle between the tangent line of the curved surface and the horizontal plane is α=30°, the curvature k of the center line of the curved surface of the device does not exceed 0.5, until the end is a smooth plane k≈0. Figure 2 As shown, if the curvature k of each point on the center line of the device surface is 0, the front end of the device is a smooth surface with a thickness of 1.4m. If the maximum curvature k of the center line is max =0.29, at this time the thickness of the curved surface is 0.8m, and the average curvature of the curved surface H = 0.15±0.14, which makes the curved surface structure of the device have a degree of curvature while ensuring the stability of the structure. If k = 0.5, the thickness of the curved surface is 0, and the center curve of the curved surface is tangent to the plane, then the stability of the structure cannot be guaranteed.

[0053] The vibration damper 6 and chain device 7 are both located between the anti-ice protection device and the outer perimeter of the cage. In other words, both are mounted on the inner side of the main body 5. The chain device 7 is located at the ends of the main body 5, dynamically connecting the ends of the main body 5 to the outer perimeter of the cage. The two ends of the main body 5 are trapezoidal in shape when viewed from the side, with grooves 8 defined at the ends, facing each other. A square design is possible to facilitate insertion into the outer frame of the cage.

[0054] The chain device 7 is composed of at least two fixing parts and a chain 73 connecting the two fixing parts. The fixing parts are fixedly installed in the groove 8 at the end of the main body 5. The number of fixing parts can be determined according to actual use requirements. Figure 6 The chain device and Figure 7 As can be seen in the aquaculture cage equipped with an anti-ice protection device, it uses three fixings and two chains 73, two of which are installed in the lower part of groove 8 and one in the upper part. The fixings consist of a fixing rod 71 and a fixing plate 72, with the fixing plate 72 fixedly mounted on the upper and lower parts of the inner side of the groove. One end of the chain 73 can be inserted into the fixing rod 71, and the fixing rod 71 and fixing plate 72 are connected by fasteners such as bolts. The fixings are parallel to the outer frame of the cage. When the groove 8 is embedded in the outer frame of the cage (i.e., the floating tube), the chain 73 is used to connect the outer floating tube of the cage to the inner side of the main body 5. Here, the chain 73 mainly serves as a flexible connection, but other connectors that can flexibly connect the device and the floating tube can also be used.

[0055] In actual use, the upper fixing rod 71 can be withdrawn, one end of the chain 73 passed through the outer floating pipe of the cage and then connected to the fixing rod 71. The fixing rod 71 passes through the chain 73 and into the fixing plate 72. The two are then fixed together with bolts to prevent the chain 73 from slipping, completing the assembly of the chain device 7. The chain device 7 changes the structure of the previous anti-ice device that was added to the equipment structure. The protective device of the present invention has the function of assembly and disassembly, and can be disassembled during the ice-free period to reduce the external environmental load.

[0056] like Figure 3 As shown, a rubber buffer pad 81 is provided in the groove 8 at the end of the main body 5, and a rubber buffer pad 81 is provided around the groove 8, which provides a certain amount of activity space for the periphery of the cage; the chain device 7 fixes the square groove 8 to the floating pipe outside the cage, and the chain 73 and the square groove 8 leave space for the floating pipe of the cage, so that the main body 5 and the cage maintain a dynamic connection, reducing the load on the cage.

[0057] The shock absorber 6 is connected to the inner side of the main body 5, as shown in FIG. Figure 5 As shown, the shock absorber 6 includes multiple groups of dampers, springs 63, and partitions 61 positioned at either end of the dampers and springs 63. The shock absorber 6 is composed of multiple groups of springs 63 and dampers arranged between two partitions 61, with the springs 63 wound around the dampers. The damper consists of a connector 62 and a moving rod 64, with the connector 62 sleeved onto the moving rod 64. As can be seen from the figure, one end of the connector 62 is fixed to the partition 61 and the other end is connected to the moving rod 64. The moving rod 64 is fixed to the partition 61 at one end and inserted into the connector 62 at the other end. The springs 63 are wound around and wrapped around the connector 62 and the moving rod 64. The shock absorber 6 fits snugly against the outer perimeter of the cage. When drifting ice strikes the protective device, the impact force is transmitted to the shock absorber 6. The moving rod 64 inside the shock absorber 6 moves and presses against the connector 62, causing the spring 63 to contract. This partially relieves the impact force while simultaneously generating a bidirectional force on the protective device and the aquaculture cage. Under the action of bidirectional forces, the protective device pushes water, changes the direction of the ocean current, and guides the ice floes to both sides. Subsequent ice floes drift away with the ocean current, avoiding the accumulation of ice floes.

[0058] The aquaculture cage maintains a dynamic connection with the anti-drift ice protection device under the action of the chain device 7, and the shock absorber 6 is located between the anti-drift ice protection device and the cage, so that the device and the cage generate an interaction force when the ice floes collide. This force causes the protection device to push water to change the direction of the surrounding ocean current and ultimately cause the ice floes to flow around.

[0059] The mooring system includes a mooring cable 3, an embedded buoy 4, an anchor chain 2, and a high-holding anchor 1. The front end of the main body 5 is tied with a mooring cable 3 made of a rigid material. One end of the mooring cable 3 is connected to the main body 5, and the other end is connected to the anchor chain 2 and the high-holding anchor 1. The mooring cable 3 is also provided with an embedded buoy 4, such as Figure 4 As shown, the embedded buoy 4 is connected to the mooring cable 3 via connecting rings 41 at both ends of the buoy body 42. The mooring system in this embodiment employs a multi-stage structure. At the upper end, a rigid mooring cable 3 connects the embedded buoy 4 to the main body 5 of the anti-ice protection device. The high-strength steel cable 3 is used to connect the embedded buoy 4 to the anchor chain 2 in the middle section, reducing the cost of the mooring system. The lower section, the ground-drag section, is connected to the high-grip anchor 1 using the anchor chain 2. The weight of the anchor chain 2 converts the upward tension into horizontal tension, fully utilizing the anchoring function of the high-grip anchor 1 (which has a strong resistance to horizontal tension but weak resistance to vertical tension). Furthermore, the embedded buoy 4 under the influence of waves and currents produces irregular motion responses, driving the steel cable to cut through the ice, thereby achieving a better anti-ice effect in conjunction with the anti-ice device.

[0060] Example 2

[0061] like Figure 7-9 As shown, this embodiment provides an offshore aquaculture cage equipped with an anti-drift ice protection device. According to the direction of the ocean current in the aquaculture area, the anti-drift ice protection device is installed on the upstream side of the cage to block the drift ice coming with the ocean current and guide the drift ice to both sides.

[0062] The protection device consists of a main body 5, a vibration damper 6, a chain assembly 7, and a mooring system. The vibration damper 6 and chain assembly 7 are located between the main body 5 and the cage, while the mooring system is located outside the main body 5 and the cage. One end of the mooring cable 3 is connected to the front end of the main body 5, and its underwater portion is connected to the buoy, anchor chain 2, and high-hold anchor 1 in sequence.

[0063] During installation and use, the vibration absorber 6 is fitted to the periphery of the cage, the groove 8 at the end of the main body 5 is embedded in the frame of the cage, and then the end of the main body 5 is connected to the periphery of the cage through the chain device 7.

[0064] It is understood that the overall specifications of the protection device are determined by the specifications of the mesh cage. The following is a practical application example to illustrate the size specifications of the protection device set according to the mesh cage.

[0065] If the perimeter of the cage is 30 to 90 m, the thickness of the main body 5 is 3 m, the width of the device is 13 to 33 m, and the maximum height is 5 to 8 m; the water pushing surface of the device (i.e. the front end of the device) is a curved surface structure, and the central curvature of the curved surface is the largest (k max=0.29); the inner side of the main body 5 is 1 meter away from the outer periphery of the cage. This distance is used to place the shock absorber 6. The shock absorber 6 consists of four groups of dampers and springs 63. The shock absorber 6 is 1 meter wide and consists of four dampers wrapped around the springs 63. The dampers are kept at equal distances. The groove 8 at the end of the main body 5 is 5 meters long. The fixing rod 71 in the upper fixing member of the groove 8 is less than 5 meters, and the fixing rod 71 on the lower side is less than 2.5 meters. The three fixing members are arranged in a triangle and connected by a chain 73.

[0066] like Figure 10 As shown, the anti-ice protection device is also applicable to square cage groups (2×4).

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, and modifications made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An anti-ice protection device, characterized in that: Comprising: A main body, in the shape of a ship's bow, with its front end face being a curved surface structure; The included angle between the tangent of the curved surface and the horizontal plane is 25° to 35°, and the degree of curvature of the curved surface gradually decreases from the center line of the curved surface to both sides until the end is a smooth plane; A shock absorber, connected to the inner side of the main body, the shock absorber includes multiple groups of dampers and springs, and the springs are wound around the dampers; A chain device, arranged at the end of the main body, the chain device consists of several fixing parts and chains, and the fixing parts are fixedly connected to the end of the main body; the fixing parts are parallel to the peripheral floating pipes of the aquaculture cage; A mooring system, including a mooring cable, one end of the mooring cable is connected to the main body, the other end is connected to an anchor chain and a large holding power anchor, and an embedded floating ball is also arranged on the mooring cable; The sides of both ends of the main body are trapezoidal shapes, grooves are provided at the ends of the ends, the two grooves are arranged oppositely, rubber buffer pads are arranged in the grooves, and the grooves are square grooves, which are beneficial to embedding the peripheral floating pipes of the aquaculture cage; Both the shock absorber and the chain device are arranged between the anti-ice-flow protection device and the periphery of the aquaculture cage; the damper consists of a connecting body and a moving rod, the connecting body is sleeved on the moving rod, when ice floes impact the anti-ice-flow protection device, the impact force is transmitted to the shock absorber, the moving rod inside the shock absorber moves inward and squeezes the connecting body, the spring contracts, while a part of the impact force is removed by the shock absorber, a two-way force is formed against the anti-ice-flow protection device and the aquaculture cage, under the action of the two-way force, the anti-ice-flow protection device performs a water-pushing movement, changes the direction of the sea current, and guides the ice floes to both sides; The fixing part is fixedly installed at the position of the groove; the fixing part consists of a fixing rod and a fixing plate, the fixing rod and the fixing plate are connected by bolts, the fixing plate is fixedly installed on the upper and lower parts inside the groove, and one end of the chain can be sleeved into the fixing rod; Among them, when the groove is embedded with the peripheral floating pipe of the aquaculture cage, the peripheral floating pipe of the aquaculture cage is connected to the inner side of the main body by using a chain, and the method of connecting the peripheral floating pipe of the aquaculture cage to the inner side of the main body by using a chain is to pull out the fixing rod installed on the upper part, pass one end of the chain through the peripheral floating pipe of the aquaculture cage and then connect it to the fixing rod, the fixing rod passes through the chain and penetrates into the fixing plate, and then the fixing rod and the fixing plate are fixedly connected by bolts to prevent the chain from slipping; the chain and the square groove leave space for the floating pipe of the aquaculture cage, so that the main body and the aquaculture cage are dynamically connected, reducing the load of the aquaculture cage.

2. The anti-ice protection device according to claim 1, characterized in that: When the included angle between the tangent of the curved surface and the horizontal plane is 30°, the center line curvature is k, 0 < k < 0.5, when the maximum curvature kmax of the center line of the curved surface is 0.29, the thickness of the curved surface is 0.8, and the average curvature H of the curved surface is 0.15 ± 0.

14.

3. The anti-ice protection device according to claim 2, characterized in that: The chain device consists of at least 3 fixing parts and chains.

4. The anti-ice protection device according to claim 1, characterized in that: The shock absorber further includes partition plates at both ends, and multiple groups of dampers and springs are arranged between the two partition plates.

5. The anti-ice protection device according to claim 1, characterized in that: The mooring system is a multi-segment structure, the upper segment is a mooring cable connecting the main body and the embedded floating ball, the middle segment uses a mooring cable to connect the embedded floating ball and the anchor chain, and the lower segment uses the anchor chain to connect to the large holding power anchor; the mooring cable is made of a rigid material.

6. An application of the anti-ice protection device according to any one of claims 1 to 5, characterized in that: The application includes using the anti-drift ice protection device in marine equipment, and the marine equipment includes aquaculture cages.

7. A marine aquaculture cage, characterized in that: The aquaculture cage is equipped with the anti-ice flow protection device according to any one of claims 1 to 6.

8. The offshore aquaculture cage according to claim 7, characterized in that: The anti-drift ice protection device is installed on one side of the aquaculture cage according to the direction of the ocean current, and the shock absorber is fitted to the outer periphery of the aquaculture cage.

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