Chain type bionic grass device for offshore wind power scouring repair

Abstract

The utility model discloses a chained bionic grass device for offshore wind power scouring repair. The chained bionic grass device comprises serially connected anchor chains and a plurality of scouring protection units. The scouring protection units are sequentially connected in series through the corresponding series connection anchor chains, and the chain type bionic grass protection structure is formed. The scouring protection unit comprises a protection base and bionic grass planted on the protection base. The protection bases in every two adjacent scouring protection units are connected through a series connection anchor chain. According to the chain type bionic grass protection structure, the multiple scouring protection units are connected in series through the series connection anchor chains, and the chain type bionic grass protection structure is formed. A worker can complete series connection on the land, the chain type bionic grass device can be rapidly installed to a designated area through a workboat, the chain type bionic grass device sinks in sequence to form a spiral protection area, and the working efficiency is improved while it is ensured that effective protection is formed on a single pile base.

Description

Technical Field

[0001] The utility model belongs to the technical field of offshore wind power engineering, and in particular relates to a chain-type bionic grass device for repairing offshore wind power scour. Background Art

[0002] Bionic grass technology is a new type of submarine anti-scour technology developed based on the principles of marine bionics. Its main mechanism of action is that when water flows through bionic grass, wave energy is absorbed and weakened, the water flow velocity is reduced, and the scouring ability of submarine cables is weakened; at the same time, due to the reduction in flow velocity and the obstruction of bionic grass, the sediment carried in the water flow is continuously deposited on the bionic grass installation base pad under the action of its own gravity, which plays a role in promoting siltation.

[0003] After the bionic grass is laid, it can absorb wave energy and eliminate waves due to its flexible viscous damping effect, thereby reducing the bottom flow velocity and reducing the erosion of submarine cables by waves. Due to the reduction in flow velocity and the obstruction of bionic grass, the sediment entrained in the water flow is continuously deposited on the bionic grass installation base pad under the action of gravity, which can significantly reduce the water flow velocity and promote sedimentation.

[0004] However, due to the complex and ever-changing offshore environment, the window for construction is limited. Currently, most bionic grass-related devices suffer from complex construction processes and low on-site operation efficiency. Utility Model Content

[0005] In order to make up for the deficiencies of the existing technology, the utility model provides a chain-type bionic grass device for offshore wind power scour repair, so as to solve the technical problems of complicated construction process and low operation efficiency of the bionic grass protection device.

[0006] In order to achieve the above purpose, the specific technical solutions of the present utility model are as follows:

[0007] A chain-type bionic grass device for offshore wind turbine scour repair includes a series of anchor chains and multiple scour protection units. Each scour protection unit is connected in series via a corresponding series of anchor chains to form a chain-type bionic grass protection structure.

[0008] The scour protection unit includes a protection base and bionic grass planted on the protection base. The protection bases of two adjacent scour protection units are connected by a serial anchor chain.

[0009] Furthermore, lock buckles that match the serial anchor chains are fixed at both ends of the protection base. The two ends of the serial anchor chains are respectively fixed to the lock buckles on adjacent sides of two adjacent protection bases.

[0010] Furthermore, wing plates are provided on both sides of the protection base, and the wing plates are arranged in the middle of the protection base.

[0011] Furthermore, the wing plate and the lock buckle are integrally formed with the protective base.

[0012] Furthermore, the protective base is a rectangular block structure.

[0013] Furthermore, the protective base is formed by pouring concrete.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] 1. This utility model connects multiple scour protection units in series via anchor chains to form a chain-type bionic grass protection structure. Workers can complete the chaining on land, and then quickly install the chain-type bionic grass device in a designated area using a construction vessel. The device is then lowered sequentially to form a spiral protection zone, ensuring effective protection for the single pile foundation while improving operational efficiency.

[0016] 2. The utility model connects the scour protection units in series by connecting anchor chains, so that the staff can control the number of scour protection units in series according to the sizes of the different scour pits they face to carry out protection and management, thereby ensuring the protection effect while maximizing the economic benefits. It has wide applicability and controllable quantity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 Schematic diagram of the relative positions of the scour protection units and the single pile foundation in the present invention;

[0019] Figure 3 It is a structural diagram of the scour protection unit in the utility model.

[0020] Figure numerals: 1. Single pile foundation; 2. Serial anchor chain; 3. Scour protection unit; 5. Bionic grass; 6. Protection base; 7. Wing plate; 8. Lock. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] The present invention will be further described below with reference to the accompanying drawings. Example

[0023] like Figure 1 and 2 As shown, a chain-type bionic grass device for offshore wind turbine scour remediation includes multiple serially connected anchor chains 2 and multiple scour protection units 3. Each scour protection unit 3 is connected in series via its corresponding serially connected anchor chains 2 to form a chain-type bionic grass protection structure. The chain-type bionic grass protection structure spirally surrounds the protected monopile foundation 1, providing multi-level scour protection for the monopile foundation 1.

[0024] like Figure 3 As shown, the scour protection unit 3 includes bionic grass 5 and a protection base 6. The protection base 6 is made of foam material, which enables the protection base 6 to float on the sea surface and absorb the impact of water flow formed on the sea surface. The protection base 6 is a rectangular block structure, and a lock 8 that cooperates with the serial anchor chain 2 is fixed at both ends. The two ends of the serial anchor chain 2 are respectively fixed to the lock 8 on the adjacent sides of two adjacent protection bases 6, thereby realizing the series connection of the two protection bases 6. The bionic grass 5 is planted in the center of the top of the protection base 6, which can further absorb the impact of water flow formed on the sea surface.

[0025] When the protective bases 6 need to be transported to the area in need of protection, the rectangular block structures can be stacked to reduce storage space. When in actual use, the protective bases 6 are arranged on land in sequence and two adjacent protective bases 6 are connected in series by connecting anchor chains 2 to form a complete chain-type bionic grass protective structure.

[0026] In this embodiment, wing plates 7 are provided on both sides of the protective base 6. When the protective base 6 floating on the sea surface is impacted by the water flow and sinks or floats, the provision of the wing plates 7 can effectively slow down the landing speed, thereby maximizing the efficiency of absorbing the water flow impact.

[0027] Furthermore, the wing plate 7 and the lock buckle 8 are both formed integrally with the protective base 6 and are both located in the middle of the protective base 6 . Example

[0028] The difference between this embodiment and embodiment 1 is that the protective base 6 is cast in concrete. The chain-type bionic grass protective structure surrounds the protected chain-type bionic grass protective structure and descends along the monopile foundation 1 until the chain-type bionic grass protective structure contacts the seabed mud surface. At the same time, the height of the protective base 6 is greater than the depth of the seabed where the monopile foundation 1 is located, so that the bionic grass 5 planted on the protective base 6 can be exposed above the sea level. When the sea level generates an impact current, the bionic grass 5 can absorb the impact force of the current, thereby forming scour protection for the monopile foundation 1.

[0029] The specific steps for using this device are as follows:

[0030] (1) Arrange the protective bases 6 on land in sequence, and connect two adjacent protective bases 6 in series through the anchor chain 2 to form a complete chain-type bionic grass protective structure.

[0031] (2) Place the completed chain-type bionic grass protective structure on the deck of the construction ship and transport it to the predetermined construction location via the construction ship.

[0032] (3) One end of the chain bionic grass protection structure is slowly placed on the seabed, and then the construction vessel sails in a circle around the single pile foundation 1 and gradually releases the chain bionic grass protection structure, so that the chain bionic grass protection structure spirally surrounds the protected single pile foundation 1, forming a multi-level scour protection for the single pile foundation 1.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A chain-type bionic grass device for offshore wind power scour repair, characterized by: It comprises a series-connected anchor chain (2) and a plurality of scour protection units (3); the scour protection units (3) are sequentially connected in series via the series-connected anchor chain (2) to form a chain-type bionic grass protection structure; The scour protection unit (3) comprises a protection base (6) and bionic grass (5) planted on the protection base (6); the protection bases (6) in two adjacent scour protection units (3) are connected by a serial anchor chain (2).

2. The chain-type bionic grass device for offshore wind power scour repair according to claim 1, characterized in that: Lock buckles (8) that match the serial anchor chain (2) are fixed at both ends of the protective base (6); and both ends of the serial anchor chain (2) are respectively fixed to the lock buckles (8) on adjacent sides of two adjacent protective bases (6).

3. The chain-type bionic grass device for offshore wind power scour repair according to claim 2, characterized in that: Wing plates (7) are provided on both sides of the protection base (6); the wing plates (7) are arranged in the middle of the protection base (6).

4. The chain-type bionic grass device for offshore wind power scour repair according to claim 3 is characterized by: The wing plate (7) and the lock buckle (8) are both integrally formed with the protective base (6).

5. The chain-type bionic grass device for offshore wind power scour repair according to claim 1 is characterized by: The protective base (6) is a rectangular block structure.

6. The chain-type bionic grass device for offshore wind power scour repair according to claim 1, characterized in that: The protective base (6) is cast in concrete.

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