Offshore wind power anti-scour protection device and installation method thereof

Abstract

The invention belongs to the technical field of offshore wind power, and discloses an offshore wind power anti-scour protection device and an installation method thereof.The protection device comprises a wind power foundation pile, a net cage and an anti-scour assembly, the wind power foundation pile is fixed to a seabed and comprises at least three supporting columns, the supporting columns extend in the vertical direction, and the net cage is arranged on the supporting columns; a containing space is defined by all the supporting columns; the net cage is arranged in the accommodating space, and at least the periphery of the top of the net cage is connected with the supporting columns; the anti-scour assembly comprises a mounting base and a plurality of bionic plants, the mounting base is arranged on the seabed, the bionic plants are arranged on the mounting base, and the ends, away from the mounting base, of at least part of the bionic plants are connected to the bottom of the net cage. According to the protection device, the bionic plant arranged on the mounting base is connected to the bottom of the net cage, the positions of the two ends of the bionic plant in the vertical direction can be stabilized, the situation that the bionic plant is buried by silt is avoided, the structural stability of the bionic plant is guaranteed, and therefore the anti-scouring effect of the bionic plant is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power, and in particular to an offshore wind power anti-scour protection device and an installation method thereof. Background Art

[0002] The jacket foundation is one of the most widely used offshore wind turbine foundation forms. It is a spatial truss structure that relies on pipe piles to connect to the seabed. However, the coastal marine environment is very complex. When the seabed address conditions are poor, the fixed jacket foundation will be scoured around the jacket foundation under the action of wind, waves, currents, and tides. The scouring process is caused by the complex movement of seawater around the jacket foundation, which leads to an increase in the speed of the current near the seabed. The current lifts up the mud and sediment on the seabed and further carries it away from the jacket foundation, thus forming a scouring pit. In severe cases, it can even cause the collapse of the entire wind turbine, causing huge losses.

[0003] At present, the bionic grass protection method is often used to actively prevent scour of the conductor frame foundation. Bionic grass has the characteristics of low production cost, easy installation and use, and long action period. However, when the amount of sediment accumulation is large, the bionic grass is easily buried by the sediment and loses its anti-scour effect. Summary of the invention

[0004] The object of the present invention is to provide an offshore wind power anti-scour protection device and an installation method thereof, which has a simple structure and can keep the bionic plant in an upright state in combination with a cage structure, thereby ensuring the anti-scour effect of the bionic plant and being easy to install.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] In a first aspect, an offshore wind power scour protection device is provided, comprising a wind power pile, a cage and an scour prevention component, wherein the wind power pile is fixed to a seabed, the wind power pile comprises at least three spaced support columns, the support columns extend in a vertical direction, and all of the support columns enclose a receiving space; the cage is arranged in the receiving space, and at least the periphery of the top of the cage is connected to a plurality of the support columns; the scour prevention component comprises a mounting seat and a plurality of bionic plants, the mounting seat is arranged on the seabed, the bionic plants are arranged on the mounting seat, and at least part of the bionic plants are connected to the bottom of the cage at one end away from the mounting seat.

[0007] As a preferred solution of the offshore wind power anti-scour protection device, the anti-scour component also includes a spring, the spring is arranged between the bionic plant and the mounting seat, and the spring always has a movement tendency to drive the bionic plant to move away from the cage; and / or,

[0008] The spring is arranged between the bionic plant and the net cage, and the spring always has a movement tendency of driving the bionic plant to move away from the mounting seat.

[0009] As a preferred solution of the offshore wind power anti-scour protection device, the anti-scour component also includes a mounting belt, which extends along a first direction, and a plurality of the bionic plants are arranged on the mounting belt at intervals along the first direction, and the two ends of the mounting belt are respectively detachably connected to the mounting seat, and the first direction is set at an angle to the vertical direction.

[0010] As a preferred solution of the offshore wind power anti-scour protection device, each of the bionic plants includes a fixing sleeve and a plurality of bionic grasses. In each of the bionic plants, all of the bionic grasses are arranged on the mounting belt at intervals along the second direction, and all of the bionic grasses are fixed on the fixing sleeve at one end away from the mounting belt. The fixing sleeve is detachably connected to the mesh box, and the first direction, the second direction and the vertical direction are arranged at angles to each other.

[0011] As a preferred solution of the offshore wind power scour protection device, a plurality of lifting rings are provided on the mounting seat, and the mounting belt is detachably connected to the lifting rings through a lock buckle; and / or,

[0012] The anti-scour component also includes a locking ring, through which the fixing sleeve is detachably connected to the net box, and a flexible layer is provided on the inner side wall of the locking ring.

[0013] As a preferred solution for the offshore wind power scour protection device, the mounting seat includes a plurality of support blocks, and all the support blocks are spliced ​​end to end around the wind power foundation pile.

[0014] As a preferred solution of the offshore wind power scour protection device, the support block has an inclined surface, and the inclined surface is inclined downward from an end adjacent to the wind power pile toward an end away from the wind power pile.

[0015] As a preferred solution of the offshore wind power anti-scour protection device, some of the support blocks are also provided with limiting grooves, and the limiting grooves are used to limit the submarine cable.

[0016] In a second aspect, a method for installing an offshore wind power anti-scour protection device is provided, and the offshore wind power anti-scour protection device is provided, comprising the following steps:

[0017] S10, on one side of the wind turbine foundation pile of the offshore wind power scour protection device, using a crane on a construction ship to hang a mounting seat of the scour prevention assembly of the offshore wind power scour protection device on the seabed and adjust it to a designated position;

[0018] S20, placing the net box of the offshore wind power anti-scour protection device in the accommodation space of the wind power foundation pile, and fixing the outer periphery of the top of the net box on each supporting column of the wind power foundation pile;

[0019] S30, the operator carries the bionic plant of the anti-scour assembly and dives into the seabed, and installs all the bionic plants on the mounting seat, and then connects the end of the bionic plant away from the mounting seat to the bottom of the cage, so that the bionic plant remains upright.

[0020] As a preferred solution for the installation method of the offshore wind power anti-scour protection device, the mounting seat is formed by splicing a plurality of support blocks end to end, and S10 includes:

[0021] S101, dividing a plurality of support blocks into a plurality of support block groups on the construction ship corresponding to the number of the support columns, and pre-assembling the support blocks in each support block group into a support support;

[0022] S102, using the crane to hang a plurality of the supporting supports on the seabed and adjust them to a specified position, and an operator dives into the seabed to splice all the supporting supports end to end.

[0023] The beneficial effects of the present invention are as follows: by using wind turbine piles to fix the cage, the cage connection is stable and reliable, and the structural utilization rate of the wind turbine piles is effectively improved, the setting of the anchoring structure of the traditional cage is omitted, and the overall investment cost of the cage is reduced; by connecting the bionic plant arranged on the mounting seat to the bottom of the cage, on the one hand, the positions of the two ends of the bionic plant in the vertical direction can be stabilized to avoid the bionic plant being buried by mud and sand, thereby ensuring the structural stability of the bionic plant and thus ensuring the anti-scouring effect of the bionic plant; on the other hand, the bionic plant pulls the bottom of the cage to avoid seawater impacting the cage and causing overlap and other effects on the cage volume, thereby ensuring the structural stability of the cage, and the interception of the bionic plant can enrich seabed nutrients, so the bionic plant close to the cage can also provide a good living environment for the breeding in the cage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0025] Figure 1 2 is a schematic structural diagram of an offshore wind power anti-scour protection device according to an embodiment of the present invention;

[0026] Figure 2 is a schematic structural diagram of an anti-scour assembly according to an embodiment of the present invention;

[0027] Figure 3 is a schematic structural diagram of a lock ring according to an embodiment of the present invention;

[0028] Figure 4 is a schematic structural diagram of a support block according to an embodiment of the present invention;

[0029] Figure 5 is a schematic diagram of the installation of a mounting base according to an embodiment of the present invention;

[0030] Figure 6 It is a schematic diagram of the installation of a mounting base according to another embodiment of the present invention.

[0031] In the figure:

[0032] 100. Submarine cables;

[0033] 1. Wind power foundation pile; 11. Support column; 12. Accommodating space; 2. Grid box; 3. Anti-scour assembly; 31. Mounting seat; 311. Support block; 312. Inclined surface; 313. Limiting groove; 32. Bionic plant; 321. Fixing sleeve; 322. Bionic grass; 33. Mounting belt; 34. Support bearing; 4. Lifting ring; 5. Locking buckle; 6. Locking ring; 61. Flexible layer; 62. Buckle; 63. Slot; 7. Connecting ring. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] like Figures 1 to 4 As shown, the offshore wind power anti-scour protection device of the embodiment of the present invention includes a wind power pile 1, a cage 2 and an anti-scour component 3, the wind power pile 1 is fixed to the seabed, the wind power pile 1 includes at least three spaced support columns 11, the support columns 11 extend in the vertical direction (the vertical direction is the Z direction shown in the figure), and all the support columns 11 enclose a accommodating space 12; the cage 2 is arranged in the accommodating space 12, and at least the outer periphery of the top of the cage 2 is connected to a plurality of support columns 11, that is, the cage 2 is connected to each support column 11 through a connecting structure to pull the cage 2 apart to ensure the structural capacity of the cage 2; the anti-scour component 3 includes a mounting seat 31 and a plurality of bionic plants 32, the mounting seat 31 is arranged on the seabed, the bionic plants 32 are arranged on the mounting seat 31, and at least part of the bionic plants 32 are connected to the bottom of the cage 2 at one end away from the mounting seat 31.

[0039] It can be understood that the wind power pile 1 is the foundation of the offshore wind turbine. By using the wind power pile 1 to fix the cage 2, the connection of the cage 2 is stable and reliable, and the structural utilization rate of the wind power pile 1 is effectively improved, the setting of the anchoring structure of the traditional cage 2 is omitted, and the overall investment cost of the cage 2 is reduced; by connecting the bionic plant 32 set on the mounting seat 31 to the bottom of the cage 2, on the one hand, the two end positions of the bionic plant 32 in the vertical direction can be stabilized to avoid the bionic plant 32 being buried by mud and sand, thereby ensuring the structural stability of the bionic plant 32, so that the bionic plant 32 can slow down the impact of ocean currents and intercept mud and sand, thereby ensuring the anti-scouring effect of the bionic plant 32; on the other hand, the bionic plant 32 pulls the bottom of the cage 2 to avoid seawater impacting the cage 2 and causing overlap, etc., which affects the volume of the cage 2, thereby ensuring the structural stability of the cage 2, so as to ensure the stability of the breeding space in the cage 2, and the interception of the bionic plant 32 can enrich seabed nutrients, so the bionic plant 32 close to the cage 2 can also provide a good living environment for the breeding in the cage 2.

[0040] Furthermore, the anti-scouring component 3 also includes a spring, a spring is provided between the bionic plant 32 and the mounting seat 31, and the spring always has a tendency to drive the bionic plant 32 to move away from the net cage 2; a spring is provided between the bionic plant 32 and the net cage 2, and the spring always has a tendency to drive the bionic plant 32 to move away from the mounting seat 31. The bionic plant 32 has a certain structural hardness and low plasticity, so the setting of the spring can effectively improve the buffer toughness of the bionic plant 32 when it is impacted by the current, thereby ensuring the relative stability of the mounting seat 31, the bionic plant 32 and the net cage 2, and preventing the bionic plant 32 from excessively pulling the mounting seat 31 and the net cage 2 due to the impact of the current.

[0041] In addition, the spring can be arranged only between the bionic plant 32 and the mounting seat 31, and even if the spring is buried by sand, it will not affect the use of the spring. Of course, the spring can also be arranged only between the bionic plant 32 and the cage 2, which also has the function of improving the buffer toughness of the bionic plant 32 when it is impacted by the sea current.

[0042] In some embodiments, Figure 1 and Figure 2 As shown, the anti-scour component 3 also includes a mounting belt 33, which extends along a first direction (the first direction is the X direction in the figure), and a plurality of bionic plants 32 are arranged at intervals along the first direction on the mounting belt 33, and both ends of the mounting belt 33 are detachably connected to the mounting seat 31, and the first direction is arranged at an angle to the vertical direction. By arranging a plurality of bionic plants 32 at intervals on the mounting belt 33 and installing them together with the mounting belt 33, the convenience of batch connection of the underwater bionic plants 32 is improved.

[0043] For example, taking the present solution in which four support columns 11 are provided and the four support columns 11 are square in shape, the mounting seat 31 is a square annular structure and is arranged around the outer periphery of the wind turbine foundation pile 1 composed of the four support columns 11, and a plurality of lifting rings 4 are provided on the mounting seat 31, and the mounting belt 33 is detachably connected to the lifting ring 4 through a locking buckle 5, and the plurality of mounting belts 33 are alternately arranged at intervals along a first direction and a second direction (the second direction is the Y direction shown in the figure), that is, a plurality of mounting belts 33 extend along the first direction and are connected to the two ends of the mounting seat 31 along the first direction, and a plurality of mounting belts 33 extend along the second direction and are connected to the two ends of the mounting seat 31 along the second direction, so as to ensure the installation density of the bionic plant 32.

[0044] Of course, the mounting seat 31 of the ring structure can omit the middle part structure, which improves the convenience of production and assembly, and the bionic plant 32 above the middle vacant part can intercept the sediment to fill the middle vacant position of the ring structure, which can ensure the installation stability of the overall mounting seat 31. In addition, the detachable connection between the lock buckle 5 and the lifting ring 4 is convenient for installation and easy for later maintenance and replacement. The lock buckle 5 structure can directly use market standard parts, and no specific examples are given. At the same time, the lifting ring 4 can also be used for the connection with the crane during the transportation of the mounting seat 31, which improves the transportation convenience of the mounting seat 31.

[0045] Furthermore, each bionic plant 32 includes a fixing sleeve 321 and a plurality of bionic grasses 322. In each bionic plant 32, all bionic grasses 322 are arranged on the mounting belt 33 at intervals along the second direction, and one end of all bionic grasses 322 away from the mounting belt 33 is fixed on the fixing sleeve 321. The fixing sleeve 321 is detachably connected to the net box 2, and the first direction, the second direction and the vertical direction are arranged at an angle to each other. The simulation of the bionic plant 32 is achieved by arranging the bionic grasses 322 at intervals and connecting them through the fixing sleeve 321. The interval arrangement of the bionic grasses 322 can not only meet the daily needs of reducing the impact of ocean currents and intercepting sediment, but also provide the interval gaps for ocean currents to pass through, effectively ensuring the structural stability of the bionic plant 32.

[0046] In this embodiment, the mounting belt 33 is made of woven cloth and cloth strips arranged at intervals on the woven cloth. Two cloth strips constitute a group, and each bionic plant 32 corresponds to a group of cloth strips. The bionic grass 322 in each bionic plant 32 is connected between the two cloth strips and then the two cloth strips are sewn together. The cloth strips have low cost and are easy to connect.

[0047] Furthermore, if Figure 3 As shown, the anti-scour component 3 also includes a locking ring 6, and the fixing sleeve 321 is detachably connected to the net box 2 through the locking ring 6, and the inner side wall of the locking ring 6 is provided with a flexible layer 61. In fact, a connecting ring 7 is provided above the fixing sleeve 321, and the connecting ring 7 is connected to the net box 2 by the locking ring 6. For example, the locking ring 6 adopts a structure composed of two semicircular rings that are rotatably connected. The ends of the two semicircular rings away from the rotating ends are respectively provided with a buckle 62 and a slot 63. The semicircular rings are rotated to make the buckle 62 snap into the slot 63 to connect the connecting ring and the net box 2. The connection is firm. When maintenance and replacement are performed, the buckle 62 can be separated from the slot 63, and disassembly and assembly are convenient. In addition, by providing a flexible layer 61 on the inner side wall of the locking ring 6, friction can be reduced, thereby reducing the wear of the net box 2. The flexible layer 61 can directly adopt materials such as sponge or silica gel. It should be noted that the bottom of the cage 2 is mainly composed of a net and a mesh. The mesh is relatively thick and has good structural strength. Therefore, the bionic plant 32 is mainly connected to the mesh at the bottom of the cage 2 to ensure the connection stability between the bionic plant 32 and the cage 2.

[0048] In other embodiments, Figure 1 , Figure 2 and Figure 4 As shown, the mounting seat 31 includes a plurality of support blocks 311, and all the support blocks 311 are spliced ​​end to end around the wind power pile 1. By splitting the mounting seat 31 into a plurality of support blocks 311, on the one hand, the small structure is easy to produce and reduce costs, and on the other hand, the small structure is also easy to transport and install. At the same time, when a local position of the mounting seat 31 is corroded or damaged by impact, only the support block 311 of the part needs to be replaced, which reduces maintenance costs. Of course, the bionic plant 32 can also be directly set on the support block 311. For example, when on the shore, the support block 311 is drilled, and the bionic plant 32 is inserted into the hole and grouted, so that the bionic plant 32 is fixedly connected to the support block 311, which can further ensure the overall anti-scour effect of the offshore wind power anti-scour protection device.

[0049] Furthermore, the support block 311 has an inclined surface 312, which is inclined downward from an end adjacent to the wind turbine pile 1 toward an end away from the wind turbine pile 1. By setting the inclined surface 312, the sea current can flow along the inclined surface 312 when impacting, thereby reducing the impact force of the sea current on the mounting seat 31 and improving the structural stability of the mounting seat 31.

[0050] Furthermore, some support blocks 311 are provided with limiting grooves 313, which are used to limit the submarine cable 100. By limiting the submarine cable 100 with the limiting grooves 313, the swing of the suspended section of the submarine cable 100 can be reduced, thereby ensuring the stability of the submarine cable 100 structure.

[0051] like Figure 1 , Figure 5 and Figure 6 As shown, an embodiment of the present invention further provides a method for installing an offshore wind power anti-scour protection device, providing an offshore wind power anti-scour protection device of any of the above embodiments, comprising the following steps:

[0052] S10, on one side of the wind turbine foundation pile of the offshore wind power scour protection device, using a crane on a construction ship to hang the mounting seat 31 of the scour prevention assembly 3 of the offshore wind power scour protection device on the seabed and adjust it to a designated position;

[0053] S20, placing the net box 2 of the offshore wind power anti-scour protection device in the accommodation space 12 of the wind power foundation pile 1, and fixing the outer periphery of the top of the net box 2 on each supporting column 11 of the wind power foundation pile 1;

[0054] S30, the operator dives into the seabed carrying the bionic plants 32 of the anti-scour assembly 3, and installs all the bionic plants 32 on the mounting seat 31, and then connects one end of the bionic plant 32 away from the mounting seat 31 to the bottom of the cage 2, so that the bionic plant 32 remains upright.

[0055] The method is simple to operate and easy to install. By using the wind turbine pile 1 to fix the grid box 2, the connection of the grid box 2 is stable and reliable, and the structural utilization rate of the wind turbine pile 1 is effectively improved, the setting of the anchoring structure of the traditional grid box 2 is omitted, and the overall investment cost of the grid box 2 is reduced; by connecting the bionic plant 32 set on the mounting seat 31 to the bottom of the grid box 2, the two end positions of the bionic plant 32 in the vertical direction can be stabilized, avoiding the bionic plant 32 from being buried by mud and sand, ensuring the structural stability of the bionic plant 32, and thus ensuring the anti-scouring effect of the bionic plant 32.

[0056] Furthermore, the mounting seat 31 is formed by splicing a plurality of support blocks 311 end to end, and S10 includes:

[0057] S101, corresponding to the number of support columns 11, a plurality of support blocks 311 are divided into a plurality of support block groups on a construction ship, and the support blocks 311 in each support block group are pre-assembled into a support support 34;

[0058] S102, using a crane to hang multiple support brackets 34 on the seabed and adjust them to a specified position, and the operating personnel dive into the seabed to splice all the support brackets 34 end to end.

[0059] like Figure 5 As shown, for example, when the wind turbine foundation pile 1 is composed of four support columns 11, the support blocks 311 can be equally divided into four groups on the construction ship and assembled into four I-shaped support supports 34, and then the four support supports 34 are hoisted to the seabed for assembly, thereby reducing the assembly time of the operating personnel at the bottom of the seabed and improving the assembly convenience of the mounting seat 31 on the seabed.

[0060] like Figure 6 As shown, in addition, the multiple support blocks 311 can also be divided into two groups, that is, a part of the support blocks 311 are spliced ​​into a U-shaped support bracket on the construction ship, and the other part of the support blocks 311 are spliced ​​into a straight-line support bracket 34, and the U-shaped support bracket and the straight-line support bracket are respectively hoisted to the seabed for assembly.

[0061] It is worth noting that in order to facilitate the operators to adjust the position of the support block 311 on the seabed, a float can be tied to the lifting ring 4 of the support block 311, and the buoyancy of the float can be used to offset part of the gravity of the support block 311, thereby facilitating the operators to move and adjust the position of the support block 311 and improving the connection convenience of the support block 311.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An offshore wind power scour protection device, characterized in that: include: Wind turbine foundation piles, the wind turbine foundation piles are fixed to the seabed, the wind turbine foundation piles include at least three support columns arranged at intervals, the support columns extend in a vertical direction, and all the support columns enclose a receiving space; A net box, the net box is arranged in the containing space, and at least the periphery of the top of the net box is connected to a plurality of the supporting columns; The anti-scour component includes a mounting seat and a plurality of bionic plants. The mounting seat is arranged on the seabed, and the bionic plants are arranged on the mounting seat. At least one end of a part of the bionic plants away from the mounting seat is connected to the bottom of the cage.

2. The offshore wind power anti-scour protection device according to claim 1 is characterized in that: The anti-scouring component further comprises a spring, the spring being arranged between the bionic plant and the mounting seat, the spring always having a movement tendency to drive the bionic plant to move away from the cage; and / or, The spring is arranged between the bionic plant and the net cage, and the spring always has a movement tendency of driving the bionic plant to move away from the mounting seat.

3. The offshore wind power anti-scour protection device according to claim 1 is characterized in that: The anti-scour component also includes a mounting belt, which extends along a first direction. A plurality of the bionic plants are arranged on the mounting belt at intervals along the first direction. Both ends of the mounting belt are detachably connected to the mounting seat, and the first direction is arranged at an angle to the vertical direction.

4. The offshore wind power anti-scour protection device according to claim 3 is characterized in that: Each of the bionic plants comprises a fixing sleeve and a plurality of bionic grasses. In each of the bionic plants, all of the bionic grasses are arranged on the mounting belt at intervals along the second direction, and one end of all of the bionic grasses away from the mounting belt is fixed on the fixing sleeve. The fixing sleeve is detachably connected to the mesh box, and the first direction, the second direction and the vertical direction are arranged at angles to each other.

5. The offshore wind power anti-scour protection device according to claim 4 is characterized in that: The mounting seat is provided with a plurality of lifting rings, and the mounting belt is detachably connected to the lifting rings via a lock buckle; and / or, The anti-scour component also includes a locking ring, through which the fixing sleeve is detachably connected to the net box, and a flexible layer is provided on the inner side wall of the locking ring.

6. The offshore wind power anti-scour protection device according to any one of claims 1 to 5, characterized in that: The mounting seat comprises a plurality of support blocks, and all the support blocks are spliced ​​end to end around the wind power foundation pile.

7. The offshore wind power anti-scour protection device according to claim 6, characterized in that: The support block has an inclined surface, and the inclined surface is inclined downward from an end adjacent to the wind turbine foundation pile toward an end away from the wind turbine foundation pile.

8. The offshore wind power anti-scour protection device according to claim 6, characterized in that: Some of the support blocks are also provided with limiting grooves, and the limiting grooves are used to limit the submarine cable.

9. A method for installing an offshore wind power anti-scour protection device, characterized in that: An offshore wind power anti-scour protection device according to any one of claims 1 to 8 is provided, comprising the following steps: S10, on one side of the wind turbine foundation pile of the offshore wind power scour protection device, using a crane on a construction ship to hang a mounting seat of the scour prevention assembly of the offshore wind power scour protection device on the seabed and adjust it to a designated position; S20, placing the net box of the offshore wind power anti-scour protection device in the accommodation space of the wind power foundation pile, and fixing the outer periphery of the top of the net box on each supporting column of the wind power foundation pile; S30, the operator carries the bionic plant of the anti-scour assembly and dives into the seabed, and installs all the bionic plants on the mounting seat, and then connects the end of the bionic plant away from the mounting seat to the bottom of the cage, so that the bionic plant remains upright.

10. The method for installing an offshore wind power anti-scour protection device according to claim 9, characterized in that: The mounting base is formed by splicing a plurality of support blocks end to end, and the S10 comprises: S101, dividing a plurality of support blocks into a plurality of support block groups on the construction ship corresponding to the number of the support columns, and pre-assembling the support blocks in each support block group into a support support; S102, using the crane to hang a plurality of the supporting supports on the seabed and adjust them to a specified position, and an operator dives into the seabed to splice all the supporting supports end to end.

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