Connecting device for fusion of offshore wind power single pile foundation and aquaculture net cage

Abstract

The utility model discloses a connecting device for fusing an offshore wind power single pile foundation and an aquaculture net cage, which comprises a single pile foundation and a floating net cage, a plurality of cage sets and vertical rods are arranged on the single pile foundation, each vertical rod is welded with all the cage sets, a mooring connecting piece is adjustably arranged on the vertical rod between two adjacent cage sets, and the floating net cage is connected with the mooring connecting piece. And a mooring hanging hole is formed in the mooring connecting piece and is matched with the shackle floating net cage. According to the single-pile foundation and floating net cage fusion mode, the number of floating net cage mooring cables and seabed anchoring can be reduced, tight combination of the fan single-pile foundation and the floating net cage is achieved, the utilization rate of the sea area space is greatly increased, and the construction cost of the aquaculture net cage is reduced. In addition, a method of fixing the mooring rope of the floating net cage with a single pile foundation instead of a seabed anchor pile is adopted, so that the stability and typhoon resistance of the floating net cage can be improved, and the cooperation and win-win situation of offshore wind power and marine ranching is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of offshore wind power engineering, and in particular relates to a connection device that integrates an offshore wind power single pile foundation with a breeding cage. Background Art

[0002] The integrated development of offshore wind power and marine ranches is an important direction for the development of the current offshore wind power industry. The integrated development of the two is an innovative idea for the comprehensive utilization of marine space. On the one hand, it solves the technical bottleneck of offshore wind power development to the deep sea, and promotes the cost reduction and efficiency increase of the offshore wind power industry. On the other hand, it also provides a new industrial model for the marine aquaculture industry and promotes the development of marine ranches to the deep sea. At present, the foundation form of offshore wind turbines constructed in my country is mainly single pile foundation, and deep-water gravity cages are the most widely used type of cages in my country's marine ranches. Therefore, it is of great practical significance to integrate the design and development of offshore wind power single pile foundations and floating cages.

[0003] There are two main modes of existing offshore wind power and marine ranching. One is structural integration, that is, using the sea space enclosed by the lower part of the foundation for cage aquaculture. At present, there are demonstration applications of the integration of offshore wind power conductor frame foundation, semi-submersible foundation and cage structure. Special modifications to the offshore wind power foundation structure are required, and the cost of the wind-fishing integration structure is high. The second is spatial integration, that is, deep-water aquaculture cages, artificial fish reefs and other aquaculture facilities are arranged in the sea area of ​​the offshore wind farm area to share the sea space. However, under this model, the connection between offshore wind power and marine ranching is not close enough, and the effect of reducing costs and increasing efficiency has not been well achieved. Utility Model Content

[0004] In order to make up for the shortcomings of the existing technology, the utility model provides a connection device that integrates an offshore wind power monopile foundation with a culture cage. Aquaculture is carried out using the culture cage by mooring one end of the deep-water gravity cage to a cage that fixes the monopile foundation.

[0005] The connecting device integrating an offshore wind power monopile foundation and aquaculture cage comprises a monopile foundation and a floating cage, wherein a plurality of cages and vertical rods are arranged on the monopile foundation, and each vertical rod is welded to all the cages. A mooring connector is adjustable on the vertical rod between two adjacent cages, and a mooring lifting hole is arranged on the mooring connector to cooperate with the shackle floating cage.

[0006] Furthermore, the mooring connector is a clamp structure, including two detachably assembled half hoops, one of which is provided with an ear plate, and the mooring lifting hole is provided on the ear plate for mooring the floating cage.

[0007] Furthermore, a reinforcing rib is provided between the ear plate and the half hoop to which it is fixed.

[0008] Furthermore, gaskets are sleeved on both ends of the vertical rod on which the mooring connector is provided, and the gaskets are arranged close to the cages connected to the two ends of the vertical rod.

[0009] Furthermore, a plurality of the floating cages are circumferentially arranged around the monopile foundation, and the plurality of the floating cages are sequentially connected in series through frame cables, and after being sequentially connected in series, an operation and maintenance channel is left between the head and tail floating cages.

[0010] Furthermore, the floating cage includes a cage and a square floating frame arranged outside the cage, the cage is connected to the four end corners of the square floating frame through four groups of connecting lines; and the two end corners of the square floating frame close to the single pile foundation are connected to the mooring connector buckles on the single pile foundation through anchor chains; and the two end corners of the square floating frame away from the single pile foundation are fixed by anchor piles.

[0011] Furthermore, four floating cages are evenly arranged around the monopile foundation.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] (1) It has the advantage of high resource utilization. This application proposes a method of fixing a floating cage on an offshore wind power monopile foundation, which expands the integrated development model of offshore wind power and marine ranching. Compared with the traditional model of cage farming in the sea space below the jacket foundation and semi-submersible foundation, the wind-fishing integration model proposed in this application combines the monopile foundation with the existing deep-water aquaculture cages. It not only has high technical maturity, but also can realize cage farming in a larger range, intensively utilize the sea space, and maximize the utilization of marine resources.

[0014] (2) It has the advantages of low construction cost and convenient construction. Compared with traditional marine ranch cage farming, the present invention fixes the anchor chain of the floating cage to the cage of the single pile foundation instead of fixing it to the seabed anchor piles, which can reduce the number of anchor piles and reduce construction costs; compared with the traditional wind-fishing fusion structure, the present invention does not require additional design, processing and manufacturing of the wind turbine foundation, but directly installs the mooring system on the original cage of the single pile foundation, which has a simple construction method and low construction cost. At the same time, the mooring system and rubber gasket designed by the present invention are both detachable and can be prefabricated in the factory, which is convenient for construction.

[0015] (3) It has the advantages of high stability and safety. In this application, the anchor chain is connected to the fixed mooring point, which makes the connection more stable and reliable, thereby improving the stability of the cage. At the same time, the mooring system can drive the cage to move up and down within a certain range, facilitating the lifting and lowering of the cage, thereby reducing the wave force and improving the safety of the cage structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the connection device of the utility model;

[0017] Figure 2 It is a schematic diagram of the connection between the single pile foundation and the floating cage of the utility model;

[0018] Figure 3 It is a schematic diagram of the arrangement of the single pile foundation and the floating cage of the utility model.

[0019] In the figure: 1-single pile foundation, 2-floating cage, 21-cage, 22-square floating frame, 3-cage, 4-vertical rod, 5-mooring connector, 6-mooring lifting hole, 7-ear plate, 8-reinforcement rib plate, 9-gasket, 10-connecting line, 11-anchor chain, 12-anchor pile, 13-frame cable. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the present invention is further described below in conjunction with the accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, a connection device integrating an offshore wind power monopile foundation and aquaculture cage comprises a monopile foundation 1 and a floating cage 2. A plurality of cages 3 and vertical rods 4 are arranged on the monopile foundation 1. Each vertical rod 4 is welded to all the cages 3. A mooring connector 5 is adjustable and arranged on the vertical rod 4 between two adjacent cages 3. The mooring connector 5 is provided with a mooring lifting hole 6, which cooperates with the shackle floating cage 2. The mooring connector 5 is a hoop structure, comprising two detachable semi-hoops, one of which is provided with an ear plate 7, and the mooring lifting hole 6 is arranged on the ear plate 7 for mooring the floating cage 2.

[0022] In the present application, a reinforcing rib 8 is provided between the ear plate 7 and the semi-hoop fixed thereto, which plays a supporting role and ensures the stable support of the ear plate 7. Gaskets 9 are also provided at both ends of the vertical rod 4 where the mooring connector 5 is provided, and the gaskets 9 are provided close to the cage 3 connected to the two ends of the vertical rod 4 to play a buffering role and reduce the impact of the mooring connector 5 on the cage 3 when the vertical rod 4 moves up and down. The gasket 9 is made of rubber, and is composed of two semi-circular rubber gaskets connected together, and is fixed to the vertical rod 4 by a knob bolt.

[0023] It can be understood that the present application is to install a mooring connector 5 on the vertical rod 4 of the cage 3 disposed outside the single pile foundation 1, and the mooring connector 5 is detachably fixed to the vertical rod 4 through its clamping structure. Since the diameter of the mooring connector 5 (i.e., the clamping structure) is slightly larger than the diameter of the vertical rod 4, the mooring connector 5 can move up and down within the distance range of the gaskets 9 at both ends of the vertical rod 4, which can reduce the concentrated force generated by waves on the connection device and the anchor chain fixing point in extreme environments, and can cooperate with the lifting and lowering of the floating cage 2. When a typhoon comes, the mooring connector 5 can be moved downward to facilitate the lowering of the floating cage 2 below the water surface to reduce the damage caused by the typhoon to the floating cage 2. In addition, the mooring connector 5 and the rubber gasket are both detachable, and the installation position and installation distance can be determined according to actual conditions, that is, they can be flexibly changed within the range of the mooring that can be moved up and down.

[0024] A plurality of floating cages 2 are arranged circumferentially around the monopile foundation 1, and the plurality of floating cages 2 are connected in series in sequence through the frame cable 13, and an operation and maintenance channel is left between the head and tail floating cages 2 after being connected in series in sequence. Figure 3 In the embodiment shown, four floating cages 2 are evenly arranged around the monopile foundation 1, and the four floating cages 2 are connected in series in sequence through the frame cable 13. After the series connection, an operation and maintenance passage is left between the first and last floating cages 2. That is, the cages are connected in series, and there is no need to drive anchor piles, saving the cost of marine ranch construction. However, it should be noted that an operation and maintenance passage must be left on one side of the connection between the cages to facilitate the passage of operation and maintenance ships. The adjacent cages are not connected by frame cables and are still fixed in the form of anchor piles.

[0025] The floating cage 2 includes a cage 21 and a square floating frame 22 arranged outside the cage 21, the cage 21 is connected to the four end corners of the square floating frame 22 through four groups of connecting lines 10; and the two end corners of the square floating frame 22 close to the monopile foundation 1 are connected to the mooring connector 5 on the monopile foundation 1 through anchor chains 11; and the two end corners of the square floating frame 22 away from the monopile foundation 1 are fixed by anchor piles 12.

[0026] For wind turbines that have not been built, the monopile foundation 1 and the cage 3 can be prefabricated in the factory according to demand. During the processing, the mooring connector 5 and the gasket 9 are installed on the vertical rod 4 of the cage 3 in advance without increasing the construction cost. For wind turbines that have been built, divers can perform simple underwater operations on the vertical rod 4 of the cage 3 to install the mooring connector 5 and the gasket 9 when installing the floating cage 2, without increasing the cost of going to sea.

[0027] In summary, the arrangement position of the floating cage 2 needs to be determined according to the position of the monopile foundation 1. During construction, the mooring connector 5 on the wind turbine cage 3 is installed first, and then the floating cage 2 is installed. The monopile foundation 1 is placed in the middle of the frame cables 13 of multiple floating cages 2 as much as possible, and the two anchor chains 11 connecting each floating cage 2 to the monopile foundation 1 can be arranged symmetrically so that the force of the mooring connector 5 is consistent. During the construction of the floating cage 2, six anchor piles 12 are first driven into the seabed, and then the floating cage 2 is dragged from the shore to the installation position, and the anchor chain 11 is fixed to the anchor pile 12, and finally the two anchor chains 11 close to the monopile side are fixed to the mooring connector 5 of the vertical rod 4.

[0028] The fusion mode of the single pile foundation 1 and the floating cage 2 in this application can reduce the number of mooring cables of the floating cage 2 and the seabed anchorage, realize the close combination of the wind turbine single pile foundation and the aquaculture cage (i.e., the floating cage 2), greatly improve the utilization rate of the sea area space, and reduce the construction cost of the aquaculture cage. In addition, the method of fixing the mooring cable of the floating cage 2 to the single pile foundation 1 instead of fixing it to the seabed anchor pile can improve the stability and typhoon resistance of the floating cage 2, and realize the win-win cooperation between offshore wind power and marine ranching.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A connection device for integrating an offshore wind power monopile foundation with a breeding cage, comprising a monopile foundation (1) and a floating cage (2), wherein a plurality of cages (3) and vertical rods (4) are arranged on the monopile foundation (1), and each vertical rod (4) is welded to all the cages (3), characterized in that: A mooring connection piece (5) is adjustable and arranged on the vertical rod (4) between the two adjacent cages (3); a mooring lifting hole (6) is arranged on the mooring connection piece (5) and cooperates with the shackle floating cage (2).

2. The connection device for integrating an offshore wind power monopile foundation with aquaculture cage according to claim 1 is characterized in that: The mooring connection piece (5) is a hoop structure, comprising two detachably assembled half hoops, one of which is provided with an ear plate (7), and the mooring lifting hole (6) is provided on the ear plate (7) for mooring the floating cage (2).

3. The connection device for integrating an offshore wind power monopile foundation with aquaculture cage according to claim 2 is characterized in that: A reinforcing rib plate (8) is provided between the ear plate (7) and the half hoop to which it is fixed.

4. The connection device for integrating an offshore wind power monopile foundation with aquaculture cage according to claim 2 is characterized in that: Gaskets (9) are also sleeved on both ends of the vertical rod (4) on which the mooring connector (5) is arranged. The gaskets (9) are arranged close to the cages (3) connected to the two ends of the vertical rod (4).

5. A connection device for integrating an offshore wind power monopile foundation with aquaculture cage according to any one of claims 1 to 4, characterized in that: A plurality of the floating cages (2) are arranged circumferentially around the monopile foundation (1), and the plurality of the floating cages (2) are sequentially connected in series via frame cables (13), and after being sequentially connected in series, an operation and maintenance channel is left between the head and tail floating cages (2).

6. The connection device for integrating an offshore wind power monopile foundation with aquaculture cage according to claim 5, characterized in that: The floating cage (2) comprises a cage (21) and a square floating frame (22) arranged outside the cage (21); the cage (21) is connected to four end corners of the square floating frame (22) via four groups of connecting lines (10); and two end corners of the square floating frame (22) close to the monopile foundation (1) are connected to the mooring connector (5) on the monopile foundation (1) via anchor chains (11); and two end corners of the square floating frame (22) away from the monopile foundation (1) are fixed via anchor piles (12).

7. The connection device for integrating an offshore wind power monopile foundation with aquaculture cage according to claim 6, characterized in that: Four floating cages (2) are evenly arranged around the monopile foundation (1).

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