A water surface free-sliding stability enhancement device

Abstract

The present invention relates to a water surface free-sliding stability enhancement device, which may include a main body, a plurality of vertical slideways, and upper and lower limiters. The main body is a floating ring-shaped device floating on the water surface and sleeved on an offshore structure. The plurality of vertical slideways are fixedly arranged on the side surface of the offshore structure at uniform intervals and are slidably engaged with the inner wall of the main body, so that the offshore structure and the main body can freely move vertically. The upper and lower limiters are respectively fixed on the upper and lower surfaces of the offshore structure and are used to prevent the main body from separating from the offshore structure. The structure of the present invention is simple and easy to install. It can also be installed on in-service offshore structures with insufficient stability, significantly reducing costs; and significantly enhancing the stability of offshore structures, supporting lift-type offshore structures, and not significantly increasing wave loads.

Description

Technical Field

[0001] The present invention relates to the field of offshore aquaculture equipment, and particularly to a water surface free-sliding stability enhancement device. Background Art

[0002] With the increasing demand for ocean development, various new types of ocean structures emerge in an endless stream. Especially in recent years, there has been a boom in offshore aquaculture in China, and various design schemes for offshore aquaculture equipment have been proposed one after another, which are diverse and of different forms. The aquaculture cage is different from traditional ocean structures. The latter is often composed of floating bodies with a large displacement, while the former often adopts a combined rod structure to reduce costs. Another difference between the aquaculture cage and traditional ocean structures is that it often has the function of lifting and lowering in water to improve the anti-wave ability and the convenience of aquaculture operations such as fishing.

[0003] Due to the rod structure characteristics of the aquaculture platform, its stability is often poor and it is prone to tilt in water. For the aquaculture cage that can be lifted and lowered, key parameters such as its weight and center of gravity change violently during the lifting and lowering process, and its stability often deteriorates further. Particular attention needs to be paid during design. There have been cases in China where the cage tilts on the water surface, so attention should be paid to ensure that the cage has sufficient stability.

[0004] The existing stability enhancement means is to add large-volume floating bodies to the ocean structure. The floating bodies are fixed on the ocean structure and cannot move relative to each other. This approach not only increases the structural weight and significantly increases the cost, but also increases the load-bearing area and reduces the anti-wave ability. Summary of the Invention

[0005] The present invention aims to provide a water surface free-sliding stability enhancement device to solve the above problems. For this purpose, the specific technical solutions adopted by the present invention are as follows:

[0006] A water surface free-sliding stability enhancement device may include a main body, a plurality of vertical slides, and upper and lower limiters. The main body is a floating ring-shaped device on the water surface and is sleeved on the ocean structure. The plurality of vertical slides are evenly spaced and fixed on the side surface of the ocean structure and are slidably engaged with the inner wall of the main body, so that the ocean structure and the main body can move freely vertically. The upper and lower limiters are respectively fixed on the upper and lower surfaces of the ocean structure to prevent the main body from detaching from the ocean structure.

[0007] Further, the vertical slides are steel pipes, and chutes cooperating with the vertical slides are provided on the inner wall of the main body.

[0008] Furthermore, the steel pipes are round pipes or square pipes.

[0009] Further, the vertical slides are composed of pulleys.

[0010] Furthermore, the number of the vertical chutes is 3 - 5.

[0011] Furthermore, the limiter includes an outer ring and a plurality of spokes, and the spokes are connected between the outer ring and the marine structure.

[0012] Furthermore, the number of the spokes is 6 - 10.

[0013] Furthermore, the limiter further includes a plurality of middle rings located between the outer ring and the marine structure.

[0014] Furthermore, the main body is annular.

[0015] Furthermore, the marine structure is an aquaculture cage or an aquaculture platform.

[0016] The beneficial effects of the present invention adopting the above technical solutions are as follows:

[0017] 1. The structure is simple and easy to install. It can also be installed on marine structures with insufficient stability in service, significantly reducing costs;

[0018] 2. It significantly enhances the stability of marine structures, supports lift - type marine structures, and does not significantly increase wave loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To further illustrate the embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, mainly used to illustrate the embodiments, and can be combined with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0020] Figure 1 is a schematic diagram of the surface free - sliding stability enhancement device of the present invention;

[0021] Figure 2 is Figure 1 a cross - sectional view of the main body of the surface free - sliding stability enhancement device shown in;

[0022] Figure 3 and 4 are respectively schematic diagrams of the surface free - sliding stability enhancement device shown in when the marine structure is ascending and descending. Figure 1 DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0024] As Figure 1and 2 As shown, the present water surface free-sliding stability enhancement device may include a main body 1, a plurality of vertical chutes 2, and a stopper 3. Among them, the main body 1 is a floating ring-shaped device that can float on the water surface and is sleeved on a marine structure 100 such as a fish farming cage and a farming platform during use. The plurality of vertical chutes 2 are fixedly installed on the side surface of the marine structure 100 at uniform intervals and are slidably engaged with the inner wall of the main body 1, enabling free vertical movement between the marine structure 100 and the main body 1. That is to say, after installing the chutes 2, the main body 1 and the marine structure 100 can freely slide in the vertical direction. The stopper 3 is fixed on the upper and lower surfaces of the marine structure 100 and is used to limit the movement range of the main body 1 and the marine structure 100 to prevent the main body 1 from detaching from the marine structure 100. For example, the upper stopper 3 can prevent the main body 1 from detaching from the top of the marine structure 100, and the lower stopper 3 can prevent the main body 1 from detaching from the bottom of the marine structure 100. Figure 3 and 4 Respectively show the lifting schematic diagrams of the marine structure 100 installed with the water surface free-sliding stability enhancement device of the present invention. When the marine structure 100 rises or falls, the main body 1 of the stability enhancement device is always located on the water surface, effectively increasing the moment of inertia of the waterplane, thereby increasing stability and preventing the marine structure 100 from tilting. Compared with the existing method of adding large-volume floating bodies to marine structures to enhance their stability, it will not significantly increase the wave load and can significantly enhance the stability of marine structures.

[0025] In the shown embodiment, the main body 1 is circular. However, the main body 1 can also be other shapes such as hexagonal or octagonal. The main body 1 is usually welded by a steel plate 11 and a framework 12, and its surface can be coated with anti-corrosion paint to extend its service life. The size of the main body 1 can be set as needed. Usually, its width can be 0.5 - 1.0 meters, and its height can be 1 to 2 meters.

[0026] The chute 2 can be a circular or square steel pipe and is fixedly installed on the marine structure 100 by welding. Correspondingly, a chute 13 cooperating with the chute 2 is provided on the inner wall of the main body 1, as Figure 2 shown. The distance between the main body 1 and the marine structure 100 is usually less than 10 centimeters to save the material cost of the main body 1 and the chute 2.

[0027] The chute 2 can also be composed of pulleys, and the pulleys can slide vertically along the inner wall of the main body 1. In this case, a special chute may not be provided on the inner wall of the main body 1.

[0028] The number of the chutes 2 can be set according to the size of the marine structure 100. Preferably, considering both cost and stability, the number of the chutes 2 can be set to 3 - 5.

[0029] In the illustrated embodiment, the stopper 3 includes an outer ring 32 and a plurality of spokes 31 (eight are shown), and the spokes 31 are connected between the outer ring 32 and the marine structure 100. Both the outer ring 32 and the spokes 31 can be made of round or square steel pipes and are fixed together by welding. The number of spokes 31 can be set according to the size of the marine structure 100. Preferably, considering both cost and strength, the number of spokes 2 can be set to 6 to 10.

[0030] To improve the strength of the stopper 3, the stopper 3 can further include one or more middle rings (not shown), which are located between the marine structure 100 and the outer periphery of the outer ring 32 and are welded to the spokes 31.

[0031] The installation process of the surface free-sliding stability enhancement device of the present invention will be described below. First, the slideway 2 is welded to the marine structure 100, then the main body 1 is sleeved on the marine structure 100, and finally the stopper 3 is welded to the marine structure 100. The entire installation process is very simple and convenient, and it can be installed on both newly built marine structures and in-service marine structures with insufficient stability. Compared with the existing device that includes a large-sized floating body in the cage structure to improve stability, the cost is significantly reduced.

[0032] Although the present invention is specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all of them are within the protection scope of the present invention.

Claims

1. A water surface free-sliding stability enhancement device, characterized in that, It includes a main body, a plurality of vertical slideways and upper and lower limiters. The main body is a floating ring-shaped device on the water surface, sleeved on the offshore structure. The plurality of vertical slideways are fixedly arranged on the side surface of the offshore structure at uniform intervals and are slidably engaged with the inner wall of the main body, so that the offshore structure and the main body can move vertically freely. The upper and lower limiters are respectively fixed on the upper and lower surfaces of the offshore structure to prevent the main body from detaching from the offshore structure; When the offshore structure rises or falls, the main body is always located on the water surface, effectively increasing the moment of inertia of the waterplane, preventing the offshore structure from tilting, and thus significantly enhancing the stability of the offshore structure; the offshore structure is an aquaculture cage or an aquaculture platform.

2. The water surface free-sliding stability enhancement device according to claim 1, wherein The vertical slideways are steel pipes, and chutes matching with the vertical slideways are arranged on the inner wall of the main body.

3. The water surface free-sliding stability enhancement device according to claim 2, wherein The steel pipes are round pipes or square pipes.

4. The surface free-sliding stability enhancement device according to claim 1, wherein, The vertical slideways are composed of pulleys.

5. The water surface free-sliding type stability enhancing device according to claim 1, wherein The number of the vertical slideways is 3 - 5.

6. The water surface free-sliding stability enhancement device according to claim 1, characterized in that, The limiter includes an outer ring and a plurality of spokes, and the spokes are connected between the outer ring and the offshore structure.

7. The surface free-sliding stability enhancement device according to claim 6, characterized in that, The number of the spokes is 6 - 10.

8. The free-sliding stability enhancement device on the water surface according to claim 6 or 7, characterized in that, The limiter further includes a plurality of middle rings located between the outer ring and the offshore structure.

9. The water surface free-sliding stability enhancement device according to claim 1, characterized in that, The main body is in a circular ring shape.

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