Offshore wind power foundation scouring prevention repairing device and operation method thereof

Abstract

The application belongs to the technical field of offshore wind power and discloses a kind of offshore wind power foundation anti-scouring repair device and its operation method, wherein the repair device comprises a repair frame, a connecting piece and a repair assembly, the repair frame is fixed on the seabed and is spaced from the wind power foundation pile, the outer circumferential side of the wind power foundation pile is evenly connected with a plurality of connecting pieces, one end of the connecting piece away from the wind power foundation pile is connected with the repair frame, a plurality of repair assemblies are arranged on the connecting piece at intervals, the repair assembly comprises a driving member and a bionic grass, the driving member is arranged on the connecting piece, and the driving member is connected with the bionic grass.The offshore wind power foundation anti-scouring repair device of the application drives the bionic grass to move in the vertical direction by using the driving member, to ensure the distance between the bionic grass and the seabed, so that the bionic grass can still be exposed to the seabed after the scouring pit is repaired by filling with silt, the bionic grass is prevented from being buried by silt, and the repair ability of the bionic grass to the scouring pit and the subsequent anti-scouring effect are effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of offshore wind power technology, and in particular to an anti-scour repair device for offshore wind power foundations and its operation method. Background Technology

[0002] Offshore wind turbine foundations are the carriers supporting the wind turbine tower and the entire superstructure. Monopile foundations are one of the most widely used types of offshore wind turbine foundations. However, the coastal marine environment is very complex. In cases of poor seabed geological conditions, fixed monopile foundations can experience scouring around the jacket foundation under the influence of wind, waves, currents, and tides. The scouring process is caused by the complex movement of seawater around the monopile foundation, leading to increased current speeds near the seabed. These currents carry away silt and sediment from the seabed, further removing it from the monopile foundation, thus forming scour pits. In severe cases, this can even lead to the collapse of the entire wind turbine, causing significant losses.

[0003] Currently, biomimetic grass is often used to actively prevent scour of monopile foundations in order to mitigate the impact of ocean currents. Biomimetic grass has the advantages of low production cost, convenient installation and use, and long service life. Moreover, biomimetic grass can intercept silt and repair scour pits. However, when the amount of silt is large, biomimetic grass is easily buried by silt and loses its scour prevention effect. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-scour repair device for offshore wind power foundations and its operation method. The device has a simple structure and is easy to operate. Its driving component can drive the bionic grass to move upward to ensure the distance between the bionic grass and the seabed, thereby improving the anti-scour effect of the bionic grass.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] In a first aspect, a scour protection and repair device for offshore wind power foundations is provided, comprising a repair frame, connectors, and repair components. The repair frame is fixed to the seabed and spaced apart from the wind power piles. A plurality of connectors are evenly distributed in a ring around the outer periphery of the wind power piles. The end of each connector away from the wind power pile is connected to the repair frame. A plurality of repair components are spaced apart along the length of each connector. Each repair component includes a driving component and a bionic grass. The driving component is disposed on the connector and is throttle-connected to the bionic grass to drive the bionic grass to move vertically.

[0007] As a preferred embodiment of the scour protection and repair device for offshore wind power foundations, the repair component further includes a mounting base, a distance sensor, and a controller. The mounting base is disposed at the drive end of the drive component, and multiple biomimetic grasses are spaced apart on the mounting base. The distance sensor is disposed on the bottom side of the mounting base and is used to measure the distance between the mounting base and the seabed. The controller is connected to the drive component and the distance sensor respectively.

[0008] As a preferred embodiment of the offshore wind power foundation anti-scour repair device, the repair component further includes a fixing base with a closed receiving cavity inside. The driving member is disposed inside the receiving cavity, and the driving end of the driving member extends outside the receiving cavity and connects to the mounting base.

[0009] As a preferred embodiment of the scour protection and repair device for offshore wind power foundations, a guide post is provided on one side of the adjacent sides of the fixed base and the mounting base, and a guide groove is provided on the other side, with the guide post inserted into the guide groove.

[0010] As a preferred embodiment of the scour protection and repair device for offshore wind power foundations, the connector includes a connecting sub-component and a fixing frame. The fixing frame is fixedly connected to the outer periphery of the wind power foundation pile. The connecting sub-component connects the repair frame and the fixing frame respectively. The driving component is disposed on the connecting sub-component.

[0011] As a preferred embodiment of the scour protection and repair device for offshore wind power foundations, the connector further includes a spring, and the spring is disposed between the repair frame and the connecting sub-component; and / or, the spring is disposed between the fixing frame and the connecting sub-component.

[0012] As a preferred embodiment of the offshore wind power foundation scour protection and repair device, the connecting component includes multiple connecting rods. The repair frame is connected to the driving component, two adjacent driving components are connected to each other, and the driving component is connected to the fixed frame through the connecting rods. The connecting rods are rotatably connected to the driving component, and the direction of the rotation axis of the connecting rods is perpendicular to the length direction of the connecting component.

[0013] As a preferred embodiment of the offshore wind power foundation scour protection and repair device, the fixing frame includes two arc-shaped frames. One end of the two arc-shaped frames is rotatably connected to each other, and the other end of the two arc-shaped frames is detachably connected. The two arc-shaped frames enclose each other to form a clamping groove for clamping the wind power foundation pile. One of the groove wall of the clamping groove and the outer peripheral side wall of the wind power foundation pile is provided with a positioning part, and the other is provided with a positioning groove. The positioning part is inserted into the positioning groove.

[0014] Secondly, a method for operating an offshore wind turbine foundation scour protection and repair device is provided. The aforementioned offshore wind turbine foundation scour protection and repair device includes the following steps:

[0015] S10. Install the repair components of the offshore wind power foundation anti-scour repair device one by one onto each of the connecting parts of the offshore wind power foundation anti-scour repair device.

[0016] S20. On the construction vessel moored around the wind turbine foundation pile, a crane is used to lift the repair frame of the offshore wind turbine foundation anti-scour repair device, each of the connecting parts and the repair components on the connecting parts onto the seabed and adjust them to the designated position.

[0017] S30. The workers dive into the seabed and connect one end of all the connectors to the outer sidewall of the wind turbine foundation pile. Then, they connect the other end of each connector away from the wind turbine foundation pile to the repair frame and adjust the installation position of each repair component so that the bionic grass of the repair component is vertically upward.

[0018] As a preferred embodiment of the operation method for the offshore wind turbine foundation scour repair device, after S30, S40 is also included, which includes the following steps:

[0019] S401: There is a scour pit on the outer periphery of the wind power foundation pile. Under the effect of the bionic grass slowing down the impact of ocean currents and intercepting sediment, the sediment gradually fills the scour pit.

[0020] S402, the driving component of the repair component in the flushing pit drives the bionic grass to move upward, so that the bionic grass in the flushing pit can maintain a distance from the bottom of the flushing pit.

[0021] The beneficial effects of this invention are as follows: By setting multiple connectors to connect the wind turbine foundation piles and the repair frame to form a mesh structure, the silt on the seabed below the offshore wind turbine foundation scour repair device can be protected to a certain extent, reducing further silt loss; the setting of bionic grass can slow down the impact of ocean currents and facilitate the settling of silt in the currents to fill and repair the scour pits; by using a driving component to drive the bionic grass to move vertically, the distance between the bionic grass and the seabed is maintained, so that the bionic grass can still be exposed on the seabed after the scour pit is filled and repaired by silt, avoiding the bionic grass being buried by silt, effectively ensuring the bionic grass's repair capability for the scour pits and the subsequent scour prevention effect. Therefore, this offshore wind turbine foundation scour repair device has the functions of stabilizing, repairing, and improving the subsequent scour prevention effect on the seabed around the wind turbine foundation piles. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a partial front view of the offshore wind power foundation erosion prevention and repair device according to an embodiment of the present invention;

[0024] Figure 2 This is a top view of the offshore wind power foundation erosion prevention and repair device according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the repair component according to an embodiment of the present invention;

[0026] In the picture:

[0027] 100. Seabed; 200. Wind turbine foundation piles; 300. Scour pit;

[0028] 1. Repair frame; 2. Connector; 21. Connector sub-component; 22. Fixing frame; 23. Reinforcing rod; 24. Connecting rope; 3. Repair assembly; 31. Drive component; 32. Bionic grass; 33. Mounting base; 331. Guide post; 34. Distance sensor; 35. Fixing base; 351. Guide groove. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0030] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0033] like Figures 1 to 3 As shown, the offshore wind power foundation scour repair device of this invention includes a repair frame 1, a connector 2, and a repair component 3. The repair frame 1 is fixed on the seabed 100 and spaced apart from the wind power pile 200. Multiple connectors 2 are evenly distributed in a ring around the outer periphery of the wind power pile 200. One end of the connector 2 away from the wind power pile 200 is connected to the repair frame 1. Multiple repair components 3 are spaced along the length direction of the connector 2. The repair component 3 includes a drive component 31 and a bionic grass 32. The drive component 31 is disposed on the connector 2 and is connected to the bionic grass 32 in a transmission connection to drive the bionic grass 32 to move in the vertical direction (the vertical direction is the Z direction shown in the figure).

[0034] It is understandable that by setting multiple connectors 2 to connect the wind turbine foundation piles 200 and the repair frame 1 to form a mesh structure, the mud and sand on the seabed 100 below the offshore wind turbine foundation anti-scour repair device can be protected to a certain extent, reducing further loss of mud and sand. The setting of bionic grass 32 can slow down the impact of ocean currents and facilitate the settling of mud and sand in the ocean currents to fill and repair the scour pit 300. By using the driving component 31 to drive the bionic grass 32 to move in the vertical direction, the distance between the bionic grass 32 and the seabed 100 is maintained, so that the bionic grass 32 can still be exposed on the seabed 100 after the scour pit 300 is filled and repaired by mud and sand, avoiding the bionic grass 32 being buried by mud and sand, effectively ensuring the repair capability of the bionic grass 32 for the scour pit 300 and the subsequent anti-scour effect. Therefore, the offshore wind turbine foundation anti-scour repair device of this embodiment has the functions of stabilizing, repairing and improving the subsequent anti-scour effect on the seabed 100 around the wind turbine foundation piles 200.

[0035] Optionally, the repair frame 1 is formed by multiple support rods. In this embodiment, six straight support rods are used as an example. The six support rods surround the outer periphery of the wind turbine foundation pile 200 in a hexagonal structure, connected end to end to form the repair frame 1. Adjacent support rods are detachably connected by buckles and slots. That is, one end of the support rod is provided with a buckle, and the other end is provided with a slot to achieve end-to-end splicing of two support rods. The buckles and slots are stably engaged and do not require external tools for connection, reducing the difficulty of operation for workers on the seabed 100 and making the repair frame 1 easy to install. It should be noted that the support rods have connecting holes, and the support rods can be fixed to the seabed 100 with positioning pins to ensure the installation stability of the repair frame 1. Of course, the repair frame 1 can also be formed by multiple arc-shaped structures.

[0036] Furthermore, such as Figure 2 As shown, the repair component 3 also includes a mounting base 33, a distance sensor 34, and a controller. The mounting base 33 is located at the drive end of the drive component 31, and multiple biomimetic grasses 32 are spaced apart on the mounting base 33. The distance sensor 34 is located on the bottom side of the mounting base 33 and is used to measure the distance between the mounting base 33 and the seabed 100. The controller is connected to both the drive component 31 and the distance sensor 34. The mounting base 33 provides more installation area for the biomimetic grasses 32, increasing their installation density. The distance sensor 34 detects the distance between the mounting base 33 and the seabed 100 and feeds this information back to the controller. If the distance is less than a set threshold, the controller controls the drive component 31 to move the mounting base 33 and the biomimetic grasses 32 upwards. This prevents the biomimetic grasses 32 from being buried by sediment due to their own sediment trapping effect, allowing them to remain exposed above the seabed 100 to maintain structural stability. Automatic adjustment ensures the continuity of the anti-scouring effect of the biomimetic grasses 32 and reduces the frequency of daily maintenance by operators.

[0037] Furthermore, the repair component 3 also includes a fixing base 35, which has a closed receiving cavity. A driving component 31 is disposed within this cavity, with its driving end extending outwards to connect with the mounting base 33. Placing the driving component 31 within the receiving cavity of the fixing base 35 facilitates the connection of the connecting component 2 to the fixing base 35, and also effectively protects the driving component 31 from seawater erosion or flooding, thus enhancing its protection. The driving component 31 is typically driven by an electric cylinder to ensure controllable driving distance and precision. It should be noted that a sealing gasket can be placed at the connection between the driving end of the driving component 31 and the fixing base 35 to ensure a tight seal between the driving end and the fixing base 35, thereby ensuring the sealing of the receiving cavity.

[0038] Optionally, such as Figure 2As shown, a guide groove 351 is recessed on the side of the fixed base 35 facing the mounting base 33, and a guide post 331 protrudes from the side of the guide groove 351 facing the fixed base 35. The guide post 331 is inserted into the guide groove 351. The cooperation between the guide post 331 and the guide groove 351 can enhance the installation accuracy between the mounting base 33 and the fixed base 35, and also improve the stability of the movement of the mounting base 33. In addition, the cooperation between the guide post 331 and the guide groove 351 can also enhance the impact resistance of the mounting base 33, so that the impact force of the ocean current on the mounting base 33 can be partially offset by the support force of the guide post 331 on the groove wall of the guide groove 351, reducing the impact torque at the connection between the drive end of the drive component 31 and the mounting base 33, and ensuring the connection strength between the drive component 31 and the mounting base 33 and the service life of the drive component 31.

[0039] Of course, the guide groove 351 is set on the bottom fixed seat 35. When the guide post 331 is lifted by the driving member 31 along with the mounting seat 33, the mud and sand flow into the guide groove 351, which can further improve the support of the guide post 331. In other embodiments, in addition to setting the guide groove 351 on the fixed seat 35 and the guide post 331 on the mounting seat 33, the guide groove 351 can also be set on the side of the mounting seat 33 facing the fixed seat 35, the guide post 331 can be set on the side of the fixed seat 35 facing the mounting seat 33, and the guide groove 351 can be set on the top mounting seat 33 with the opening facing downward. This can prevent mud and sand from entering the guide groove 351 and blocking the gap between the guide post 331 and the groove wall of the guide groove 351, and ensure smooth movement between the guide post 331 and the guide groove 351.

[0040] In some embodiments, such as Figure 1 and Figure 3 As shown, the connector 2 includes a connector sub-component 21 and a fixing frame 22. The fixing frame 22 is fixedly connected to the outer periphery of the wind turbine foundation pile 200. The connector sub-component 21 is connected to the repair frame 1 and the fixing frame 22 respectively. The driving component 31 is disposed on the connector sub-component 21. The fixing frame 22 improves the connection convenience between the connector sub-component 21 and the wind turbine foundation pile 200.

[0041] Specifically, the fixing frame 22 includes two arc-shaped frames. One end of the two arc-shaped frames is rotatably connected to each other, and the other end of the two arc-shaped frames is detachably connected. The two arc-shaped frames enclose a clamping groove for clamping the wind turbine pile 200. The groove wall of the clamping groove is provided with a positioning part, and the outer peripheral side wall of the wind turbine pile 200 is provided with a positioning groove, in which the positioning part is inserted. One of the two arc-shaped frames is provided with a buckle, and the other is provided with a slot. The buckle and the slot engage to connect the two arc-shaped frames. The engagement is stable and does not require external tools. Of course, other methods such as bolt connection can also be used, but specific examples are not provided here. It can be understood that by using the two arc-shaped frames to clamp the wind turbine pile 200 to achieve the connection between the fixing frame 22 and the wind turbine pile 200, the positioning part and the positioning groove are provided to ensure the connection strength between the fixing frame 22 and the wind turbine pile 200, thereby enhancing the structural constraint between the fixing frame 22 and the wind turbine pile 200 and ensuring the connection stability between the fixing frame 22 and the wind turbine pile 200.

[0042] Because there are certain scour pits 300 around the wind turbine foundation pile 200, and the depth of the scour pits 300 is unpredictable, multiple positioning grooves are arranged at intervals along the vertical direction on the outer periphery of the wind turbine foundation pile 200 to ensure the universality of the connection and fit between the fixing frame 22 and the wind turbine foundation pile 200. Of course, in addition to setting the positioning part on the inner side wall of the fixing frame 22 and setting the positioning groove on the outer periphery of the wind turbine foundation pile 200, the positioning part can also be set on the outer periphery of the wind turbine foundation pile 200 and the positioning groove on the inner side wall of the fixing frame 22.

[0043] Furthermore, the connector 2 also includes springs. A spring is provided between the repair frame 1 and the connector sub-component 21; a spring is also provided between the fixed frame 22 and the connector sub-component 21. By providing springs, on the one hand, the connection tolerance when the connector sub-component 21 connects the repair frame 1 and the fixed frame 22 can be improved, enhancing the connection convenience of the connector sub-component 21; on the other hand, it can improve the buffering toughness of the connector sub-component 21 when impacted by ocean currents, preventing the connector sub-component 21 from being excessively stretched and broken by ocean currents, thus ensuring the connection stability of the repair frame 1, the connector sub-component 21, and the fixed frame 22. Of course, springs can be provided only between the repair frame 1 and the connector sub-component 21, or only between the fixed frame 22 and the connector sub-component 21, both of which can achieve the goal of improving the buffering toughness of the connector sub-component 21.

[0044] Furthermore, such as Figure 1 and Figure 2As shown, the connecting component 21 includes multiple connecting rods. The repair frame 1 and the driving component 31, adjacent driving components 31, and the driving component 31 and the fixed frame 22 are all connected by connecting rods. The connecting rods are rotatably connected to the driving component 31, and the direction of the rotation axis of the connecting rod is perpendicular to the length direction of the connecting component 2. By using rigid connecting rods to connect the repair frame 1, the driving component 31, and the fixed frame 22, the stability of the driving component 31's installation state can be enhanced, preventing the driving component 31 from tipping over or tilting under the impact of ocean currents. In this embodiment, the driving component 31 is mounted on the fixed base 35, so the connecting rods are rotatably connected to the fixed base 35. The rotation of the connecting rods is limited to allowing the fixed base 35 to adapt to changes in the height of the seabed 100, reducing the possibility of the fixed base 35 tipping over along the length direction perpendicular to the connecting component 2, and improving the installation stability of the connecting component 2 and the driving component 31. Of course, the connecting component 21 can also be directly connected using flexible ropes.

[0045] Optionally, such as Figure 2 and Figure 3 As shown, the connector 2 also includes multiple reinforcing rods 23. Multiple reinforcing rods 23 are evenly distributed around the outer periphery of the fixing frame 22. The end of the reinforcing rod 23 away from the fixing frame 22 is connected to the repair frame 1. The repair components 3 on two adjacent connectors 2 are connected to each other, and the repair components 3 on the connector 2 adjacent to the reinforcing rod 23 are connected to the reinforcing rod 23 to form a mesh structure, which effectively improves the connection strength of the repair components 3.

[0046] For example, at least two connectors 2 are provided between the two reinforcing rods 23, and each connector 2 is provided with multiple repair components 3. Two adjacent repair components 3 between the two connectors 2 are connected by a connecting rope 24. The drive component 31 of the repair component 3 on the connector 2 adjacent to the reinforcing rod 23 is connected to the reinforcing rod 23 by the connecting rope 24.

[0047] like Figures 1 to 3 As shown, this embodiment of the invention also provides an operation method for an offshore wind power foundation scour prevention and repair device. The offshore wind power foundation scour prevention and repair device provided in any of the above embodiments includes the following steps:

[0048] S10. Install the repair components 3 of the offshore wind power foundation anti-scour repair device onto each of the connecting parts 2 of the offshore wind power foundation anti-scour repair device.

[0049] S20. On the construction vessel moored around the wind turbine foundation pile 200, a crane is used to lift the repair frame 1, each connector 2 and the repair components 3 on the connector 2 of the offshore wind turbine foundation anti-scour repair device onto the seabed 100 and adjust them to the designated positions.

[0050] S30. The workers dive into the seabed and connect one end of all the connectors 2 to the outer side wall of the wind turbine pile 200. Then, they connect the other end of each connector 2 away from the wind turbine pile 200 to the repair frame 1 and adjust the installation position of each repair component 3 so that the bionic grass 32 of the repair component 3 is vertically upward.

[0051] This method uses multiple connectors 2 to connect the wind turbine foundation piles 200 and the repair frame 1 to form a mesh structure, which can provide some protection for the sediment on the seabed 100 below the offshore wind turbine foundation anti-scour repair device and reduce further loss of sediment. The biomimetic grass 32 can slow down the impact of the ocean current and facilitate the sediment settling in the ocean current to fill and repair the scour pit 300. The operation is simple.

[0052] Of course, before S10, it is necessary to conduct a survey of the seabed topography around the wind turbine foundation pile 200 by means of sonar scanning or diver survey to obtain the seabed topography data and scour situation, and to make adaptive adjustments to the length of the connector 2, module installation, etc., to ensure the structural stability and long-term use of the offshore wind turbine foundation anti-scour repair device.

[0053] Furthermore, following S30, there is also S40, which includes the following steps:

[0054] S401: There is a scour pit 300 on the outer periphery of the wind power foundation pile 200. Under the effect of the bionic grass 32 to reduce the impact of ocean currents and intercept sediment, sediment gradually fills the scour pit 300.

[0055] S402, the drive component 31 of the repair component 3 in the flushing pit 300 drives the bionic grass 32 to move upward, so that the bionic grass 32 in the flushing pit 300 can maintain a distance from the bottom of the flushing pit 300.

[0056] By using the driving component 31 to drive the bionic grass 32 to move vertically, the distance between the bionic grass 32 and the seabed 100 is maintained, so that the bionic grass 32 can still be exposed on the seabed 100 after the scour pit 300 is filled and repaired by mud and sand, thus avoiding the bionic grass 32 being buried by mud and sand, effectively ensuring the bionic grass 32's ability to repair the scour pit 300 and its subsequent anti-scour effect.

[0057] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A device for scour prevention and repair of offshore wind turbine foundations, characterized in that, The device includes a repair frame, connectors, and repair components. The repair frame is fixed to the seabed and spaced apart from the wind turbine foundation piles. Multiple connectors are evenly distributed in a ring around the outer periphery of the wind turbine foundation piles. The end of each connector away from the wind turbine foundation pile is connected to the repair frame. Multiple repair components are spaced apart along the length of each connector. Each repair component includes a driving component and a bionic grass. The driving component is disposed on the connector and is connected to the bionic grass to drive the bionic grass to move vertically. The repair assembly also includes a mounting base, a distance sensor, and a controller. The mounting base is disposed at the drive end of the drive component, and multiple biomimetic grasses are spaced apart on the mounting base. The distance sensor is disposed on the bottom side of the mounting base and is used to measure the distance between the mounting base and the seabed. The controller is connected to the drive component and the distance sensor respectively. The connector includes a connecting sub-component and a fixing frame. The fixing frame is fixedly connected to the outer periphery of the wind turbine foundation pile. The connecting sub-component is connected to the repair frame and the fixing frame respectively. The driving component is disposed on the connecting sub-component. The connecting component includes multiple connecting rods. The repair frame is connected to the driving component, two adjacent driving components are connected to each other, and the driving component is connected to the fixed frame through the connecting rods. The connecting rods are rotatably connected to the driving component, and the direction of the rotation axis of the connecting rod is perpendicular to the length direction of the connecting component.

2. The offshore wind power foundation erosion protection and repair device according to claim 1, characterized in that, The repair assembly also includes a fixing base with a closed receiving cavity. The driving member is disposed in the receiving cavity, and the driving end of the driving member extends to the outside of the receiving cavity and is connected to the mounting base.

3. The offshore wind power foundation erosion protection and repair device according to claim 2, characterized in that, A guide post is provided on one side of the fixed base and the mounting base that are adjacent to each other, and a guide groove is provided on the other side, with the guide post inserted into the guide groove.

4. The offshore wind power foundation scour protection and repair device according to any one of claims 1-3, characterized in that, The connector further includes a spring, and the spring is disposed between the repair frame and the connecting sub-component; and / or, the spring is disposed between the fixing frame and the connecting sub-component.

5. The offshore wind power foundation scour protection and repair device according to any one of claims 1-3, characterized in that, The fixing frame includes two arc-shaped frames, one end of which is rotatably connected to each other, and the other end of which is detachably connected. The two arc-shaped frames enclose each other to form a clamping groove for clamping the wind turbine pile. One of the groove wall of the clamping groove and the outer peripheral side wall of the wind turbine pile is provided with a positioning part, and the other is provided with a positioning groove. The positioning part is inserted into the positioning groove.

6. A method for operating an anti-scour repair device for offshore wind turbine foundations, characterized in that, The offshore wind turbine foundation scour protection and repair device according to any one of claims 1-5 includes the following steps: S10. Install the repair components of the offshore wind power foundation anti-scour repair device one by one onto each of the connecting parts of the offshore wind power foundation anti-scour repair device. S20. On the construction vessel moored around the wind turbine foundation pile, a crane is used to lift the repair frame of the offshore wind turbine foundation anti-scour repair device, each of the connecting parts and the repair components on the connecting parts onto the seabed and adjust them to the designated position. S30. The workers dive into the seabed and connect one end of all the connectors to the outer sidewall of the wind turbine foundation pile. Then, they connect the other end of each connector away from the wind turbine foundation pile to the repair frame and adjust the installation position of each repair component so that the bionic grass of the repair component is vertically upward.

7. The operation method of the offshore wind power foundation scour repair device according to claim 6, characterized in that, Following S30, there is also S40, which includes the following steps: S401: There is a scour pit on the outer periphery of the wind power foundation pile. Under the effect of the bionic grass slowing down the impact of ocean currents and intercepting sediment, the sediment gradually fills the scour pit. S402, the driving component of the repair component in the flushing pit drives the bionic grass to move upward, so that the bionic grass in the flushing pit can maintain a distance from the bottom of the flushing pit.

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