Scouring protection device for offshore wind power pile foundation

Abstract

The invention discloses a scouring protection device for an offshore wind power pile foundation, and relates to the technical field of protection devices. The device comprises a base column, a height limiting mechanism is arranged on the outer side of the base column, a limiting mechanism is arranged on the outer side of the base column, a protection mechanism is arranged on the outer side of the limiting mechanism, the limiting mechanism comprises two arc-shaped limiting frames, the inner sides of the arc-shaped limiting frames are attached to the outer side of the base column, and a plurality of insertion rods are inserted into the upper surfaces of the arc-shaped limiting frames. According to the marine foundation pillar, displacement of the foundation pillar in the marine environment can be effectively prevented through the limiting mechanism, modular assembly and sealing can be achieved through the protection mechanism, the protection effect is enhanced, the height of the foundation pillar can be adjusted through the height limiting mechanism, and the height of the foundation pillar can be adjusted through the height limiting mechanism. The height can be flexibly adjusted, the scouring depth of the foundation pillar can be limited, and meanwhile the stability and durability of the device in the complex marine environment are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of protective devices, and in particular to a scour protection device for offshore wind power pile foundations. Background Art

[0002] The scour protection device for offshore wind turbine pile foundations is suitable for complex and changeable marine environments, especially for sea areas with turbulent water flow and seabed susceptible to scouring, such as offshore shoals, tidal channels, estuaries and other areas. Due to the long-term influence of tides, waves, ocean currents and other factors, these places are easily washed away by seabed sediments, resulting in hollowing around the wind turbine pile foundations, seriously affecting the stability of the pile foundations; the device can also be used in areas with poor marine geological conditions, soft seabed soil or weak interlayers. The protective device can reduce the direct scouring of the pile foundation by water flow and reduce the risk of seabed erosion; in addition, the device is also applicable to sea areas with dense marine engineering facilities that require long-term maintenance. Its modular design and convenient installation and maintenance methods can greatly reduce the difficulty and cost of offshore operations and ensure the safe and stable operation of offshore wind power facilities.

[0003] However, with existing technologies, offshore wind turbine pile foundations often face severe challenges brought by the marine environment, such as water scouring causing the seabed to be hollowed out, which in turn causes the pile foundation to shift, affecting its stability and safety; at the same time, most protective devices are difficult to achieve modular assembly, which increases maintenance costs and difficulty; in addition, due to the complexity and variability of the marine environment, the depth of pile foundation scouring is difficult to control, and the device lacks a flexible height adjustment mechanism, making it difficult to adapt to the hydrogeological conditions of different sea areas, resulting in insufficient durability of the device and easy damage.

[0004] In response to the above problems, the inventors proposed a scour protection device for offshore wind power pile foundations to solve the above problems. Summary of the Invention

[0005] In order to solve the problems of easy displacement of pile foundation, difficulty in modular assembly and lack of flexible height adjustment mechanism, the present invention aims to provide a scour protection device for offshore wind power pile foundation.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: a scour protection device for offshore wind turbine pile foundation, comprising a base column, the outer side of the base column is provided with a height limiting mechanism, the outer side of the base column is provided with a limiting mechanism, the outer side of the limiting mechanism is provided with a protective mechanism, the limiting mechanism comprises two arc-shaped limit frames, the inner side of the arc-shaped limit frame is in contact with the outer side of the base column, the upper surface of the arc-shaped limit frame is provided with a plurality of insertion rods, the lower ends of the insertion rods pass through the lower surface of the arc-shaped limit frame, and the outer sides of the two arc-shaped limit frames are jointly provided with a plurality of positioning frames, a rotating rod is fixedly provided on the inner wall of one side of the positioning frame, the rotating rod is rotatably engaged with the outer sides of the two arc-shaped limit frames, a positioning bolt is inserted on one side of the positioning frame, a plurality of positioning holes are opened on the outer side of the arc-shaped limit frame, the inner sides of the positioning holes are slidably engaged with the outer sides of the positioning bolts, and a positioning nut is threadedly sleeved on one end of the positioning bolt.

[0007] Preferably, the protective mechanism includes a guide protective plate, the inner side of the guide protective plate is fixedly connected to the outer side of the arc-shaped limit frame, a plurality of openings are provided on the outer side of the guide protective plate, a splicing hole is provided on the inner wall of one end of the opening, a splicing screw is provided on the inner side of each two adjacent openings, two splicing nuts are sleeved on the outer side of the splicing screw, and a sealing block is provided for sliding on the inner side of the opening.

[0008] Preferably, the height limiting mechanism includes an adjusting ring, the inner side of the adjusting ring is slidably fitted with the outer side of the base column, the outer side of the adjusting ring is fixed with a plurality of reinforcing plates distributed in a ring shape, the lower surfaces of the plurality of reinforcing plates are jointly fixed with a limiting plate, the lower surface of the limiting plate is fitted with the upper ends of a plurality of insertion rods, the outer side of the adjusting ring is provided with a plurality of fixing holes, the inner side of the fixing holes is slidably provided with fixing bolts, the outer side of the base column is provided with a plurality of horizontally distributed adjustment holes, the adjustment holes are threadedly fitted with the fixing bolts.

[0009] Preferably, the lower ends of the insertion rods are provided with anti-loosening grooves.

[0010] Preferably, a plurality of rotation holes are provided on the outer side of the arc-shaped limiting frame, and the rotation holes are rotationally fitted with the rotation rod.

[0011] Preferably, positioning grooves are provided on both sides of the positioning frame, and the inner sides of the positioning grooves are slidably fitted with the positioning bolts.

[0012] Preferably, a plurality of grooves are provided on the outer side of the deflector protection plate, and the grooves are located on one side of the positioning frame.

[0013] Preferably, a prying opening is provided on the outer side of the sealing block.

[0014] Preferably, an adjustment groove is provided on the inner side of the adjustment ring, and the inner side of the adjustment groove is slidably fitted with the outer side of the base column.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a limiting mechanism, a plug rod, a positioning frame, a positioning bolt and a positioning nut to achieve stable fixation, effectively preventing the base column from displacement in the marine environment; 2. The present invention realizes modular assembly and sealing through the protective mechanism, using structures such as splicing screws, splicing nuts and sealing blocks, thereby enhancing the protective effect; 3. The present invention can flexibly adjust the height and limit the scouring depth of the base column through the height limiting mechanism, while ensuring the stability and durability of the device in complex marine environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0019] Figure 3 It is a schematic structural diagram of the limiting mechanism of the present invention.

[0020] Figure 4 It is an exploded view of the limiting mechanism structure of the present invention.

[0021] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle.

[0022] Figure 6 It is a schematic diagram of the protection mechanism structure of the present invention.

[0023] Figure 7 It is an exploded view of the protective mechanism structure of the present invention.

[0024] Figure 8 It is a structural schematic diagram of the height limiting mechanism of the present invention.

[0025] In the figure: 1. Base column; 2. Limiting mechanism; 3. Protection mechanism; 4. Height limiting mechanism; 20. Arc-shaped limiting frame; 21. Insert rod; 22. Anti-loosening pattern; 23. Positioning frame; 24. Positioning nut; 25. Rotating rod; 26. Rotating hole; 27. Positioning hole; 28. Positioning bolt; 29. Positioning groove; 30. Guide protective plate; 31. Opening; 32. Splicing nut; 33. Groove; 34. Splicing hole; 35. Splicing screw; 36. Prying mouth; 37. Sealing block; 40. Adjusting ring; 41. Reinforcement plate; 42. Limiting plate; 43. Fixing hole; 44. Fixing bolt; 45. Adjusting hole; 46. Adjusting groove. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1: Figure 1-5 As shown, the present invention provides a scour protection device for an offshore wind power pile foundation, comprising a base column 1, a height limiting mechanism 4 is provided on the outside of the base column 1, a limiting mechanism 2 is provided on the outside of the limiting mechanism 2, a protection mechanism 3 is provided on the outside of the limiting mechanism 2, and the limiting mechanism 2 comprises two arc-shaped limiting frames 20, the inner side of the arc-shaped limiting frame 20 is in contact with the outer side of the base column 1, a plurality of insertion rods 21 are inserted into the upper surface of the arc-shaped limiting frame 20, and the lower end of the insertion rod 21 passes through the lower end of the arc-shaped limiting frame 20. On the surface, a plurality of positioning frames 23 are commonly provided on the outer sides of the two arc-shaped limit frames 20. A rotating rod 25 is fixed on the inner wall of one side of the positioning frame 23. The rotating rod 25 rotates and fits with the outer sides of the two arc-shaped limit frames 20. A positioning bolt 28 is inserted on one side of the positioning frame 23. A plurality of positioning holes 27 are opened on the outer side of the arc-shaped limit frame 20. The inner side of the positioning hole 27 slides and fits with the outer side of the positioning bolt 28. A positioning nut 24 is threadedly sleeved on one end of the positioning bolt 28.

[0028] By adopting the above technical solution, during installation, the two arc-shaped limit frames 20 are first inserted from both sides of the base column 1, so that the inner side of the arc-shaped limit frames 20 is tightly fitted with the outer side of the base column 1. Next, multiple insertion rods 21 are inserted from the upper surface of the arc-shaped limit frames 20 until the lower ends of the insertion rods 21 penetrate the lower surface of the arc-shaped limit frames 20 and penetrate into the seabed. The arc-shaped limit frames 20 are initially fixed using the insertion rods 21. Then, the rotation rod 25 on the inner wall of one side of the positioning frame 23 is aligned with the rotation hole 26 on the outer side of the arc-shaped limit frame 20. The rotation rod 25 and the rotation hole 26 are rotated to fit together, and the positioning frame 23 is installed on the outer side of the two arc-shaped limit frames 20. Afterwards, insert the positioning bolt 28 from one side of the positioning frame 23, and after passing through the positioning groove 29, make the outer side of the positioning bolt 28 slide and fit with the positioning hole 27 on the outer side of the arc-shaped limiting frame 20, and finally thread the positioning nut 24 on one end of the positioning bolt 28, tighten the positioning nut 24, and complete the installation of the limiting mechanism 2 to achieve stable fixation of the base column 1. Through the limiting mechanism 2, the inserted rod 21, the positioning frame 23, the positioning bolt 28 and the positioning nut 24 and other structures are used to achieve stable fixation, effectively preventing the base column 1 from displacement in the marine environment.

[0029] The lower ends of the insertion rods 21 are each provided with anti-loosening grooves 22 .

[0030] By adopting this technical solution, the anti-loosening groove 22 at the lower end of the rod 21 increases the friction between the rod 21 and the seabed. In the marine environment, the forces of currents, waves, and other factors can cause the rod 21 to be pulled upward. The anti-loosening groove 22 effectively prevents the rod 21 from loosening on the seabed, ensuring that the rod 21 is firmly fixed to the arc-shaped limit frame 20, thereby ensuring the stable fixation of the limit mechanism 2 to the base column 1, and improving the reliability of the entire scour protection device.

[0031] A plurality of rotation holes 26 are formed on the outer side of the arc-shaped limiting frame 20 , and the rotation holes 26 are rotatably fitted with the rotation rods 25 .

[0032] By adopting the above technical solution, the multiple rotation holes 26 formed on the outer side of the arc-shaped limit frame 20 rotatably engage with the rotation rod 25 on the inner wall of one side of the positioning frame 23, allowing the positioning frame 23 to rotate about the rotation rod 25. This rotation design facilitates the installation and adjustment of the positioning frame 23. During installation, the position of the positioning frame 23 can be flexibly adjusted according to actual conditions to better match the arc-shaped limit frame 20, improving the convenience and flexibility of installation while also ensuring that the positioning frame 23 effectively fixes the arc-shaped limit frame 20.

[0033] A positioning groove 29 is formed on both sides of the positioning frame 23 , and the inner side of the positioning groove 29 is slidably fitted with the positioning bolt 28 .

[0034] By adopting the above technical solution, the positioning grooves 29 provided on both sides of the positioning frame 23 slide in contact with the positioning bolts 28, providing a stable sliding path for the positioning bolts 28. During installation, the positioning grooves 29 guide the positioning bolts 28 accurately into the positioning holes 27, improving installation accuracy. Furthermore, the positioning grooves 29 also serve to limit the positioning bolts 28, preventing them from shifting during installation and ensuring that the positioning bolts 28 can smoothly engage with the positioning nuts 24 to secure the arc-shaped limiting frame 20.

[0035] Working Principle: During installation, first insert the two arc-shaped limit frames 20 from both sides of the base column 1, so that the inner side of the arc-shaped limit frames 20 is tightly fitted with the outer side of the base column 1. Next, insert multiple insertion rods 21 from the upper surface of the arc-shaped limit frames 20 until the lower ends of the insertion rods 21 penetrate the lower surface of the arc-shaped limit frames 20 and penetrate into the seabed. Use the insertion rods 21 to preliminarily fix the arc-shaped limit frames 20. Then, align the rotating rod 25 on the inner wall of one side of the positioning frame 23 with the rotating hole 26 on the outer side of the arc-shaped limit frame 20, rotate the rotating rod 25 and the rotating hole 26 to fit together, and install the positioning frame 23 to the outer side of the two arc-shaped limit frames 20. Afterwards, insert the positioning bolt 28 from one side of the positioning frame 23, and after passing through the positioning groove 29, make the outer side of the positioning bolt 28 slide and fit with the positioning hole 27 on the outer side of the arc-shaped limit frame 20, and finally thread the positioning nut 24 on one end of the positioning bolt 28, tighten the positioning nut 24, complete the installation of the limiting mechanism 2, and achieve stable fixation of the base column 1.

[0036] Example 2: Figure 6-7 As shown, the protection mechanism 3 includes a guide protection plate 30, the inner side of the guide protection plate 30 is fixedly connected to the outer side of the arc-shaped limit frame 20, and a plurality of openings 31 are provided on the outer side of the guide protection plate 30. A splicing hole 34 is provided on the inner wall of one end of the opening 31. A splicing screw 35 is provided on the inner side of each two adjacent openings 31. Two splicing nuts 32 are sleeved on the outer side of the splicing screw 35, and a sealing block 37 is slidably provided on the inner side of the opening 31.

[0037] By adopting the above technical solution, after completing the installation of the limiting mechanism 2, the inner side of the deflector protective plate 30 is fixedly connected to the outer side of the arc-shaped limiting frame 20. The multiple openings 31 opened on the outer side of the deflector protective plate 30 can be used for subsequent splicing operations. When it is necessary to splice multiple deflector protective plates 30, the splicing screw 35 is placed on the inner side of each two adjacent openings 31, and then two splicing nuts 32 are put on the outer side of the splicing screw 35, and the splicing nuts 32 are tightened respectively to make the adjacent deflector protective plates 30 tightly connected. If it is necessary to seal the opening 31, the sealing block 37 is slid into the inner side of the opening 31, and the opening 31 is sealed with the sealing block 37. When it is necessary to remove the sealing block 37, the sealing block 37 can be pried out with a tool through the prying opening 36 on the outer side of the sealing block 37, and modular assembly and sealing are achieved through the protective mechanism 3 using structures such as the splicing screw 35, the splicing nut 32 and the sealing block 37 to enhance the protective effect.

[0038] A plurality of grooves 33 are formed on the outer side of the deflector protection plate 30 , and the grooves 33 are located on one side of the positioning frame 23 .

[0039] By adopting the above technical solution, multiple grooves 33 are defined on the outside of the deflector plate 30, located on one side of the positioning bracket 23. The grooves 33 provide space for the installation and adjustment of the positioning bracket 23. During installation, the grooves 33 prevent interference between the positioning bracket 23 and the deflector plate 30, allowing the positioning bracket 23 to be more smoothly installed on the arc-shaped limit bracket 20. Furthermore, the grooves 33 reduce the weight of the deflector plate 30, reducing the load on the entire device and improving its stability and durability.

[0040] A prying opening 36 is formed on the outer side of the sealing block 37 .

[0041] By adopting the above technical solution, the prying opening 36 on the outside of the sealing block 37 facilitates the installation and removal of the sealing block 37. When installing the sealing block 37, the prying opening 36 serves as a force point, facilitating the insertion of the sealing block 37 into the inside of the opening 31. When removing the sealing block 37, a tool can be inserted into the prying opening 36 and pried out. This simple and convenient operation improves the efficiency of maintenance and repair.

[0042] Working principle: After completing the installation of the limiting mechanism 2, the inner side of the deflector protective plate 30 is fixedly connected to the outer side of the arc-shaped limiting frame 20. The multiple openings 31 opened on the outside of the deflector protective plate 30 can be used for subsequent splicing operations. When multiple deflector protective plates 30 need to be spliced, the splicing screw 35 is placed on the inner side of each two adjacent openings 31, and then two splicing nuts 32 are put on the outer side of the splicing screw 35, and the splicing nuts 32 are tightened respectively to make the adjacent deflector protective plates 30 tightly connected. If the opening 31 needs to be sealed, the sealing block 37 is slid into the inner side of the opening 31, and the opening 31 is sealed with the sealing block 37. When the sealing block 37 needs to be removed, the sealing block 37 can be pried out using a tool through the prying opening 36 on the outside of the sealing block 37.

[0043] Example 3: Figure 8 As shown, the height limiting mechanism 4 includes an adjusting ring 40, the inner side of the adjusting ring 40 is slidably fitted with the outer side of the base column 1, and the outer side of the adjusting ring 40 is fixed with a plurality of reinforcing plates 41 distributed in a ring shape, and the lower surfaces of the plurality of reinforcing plates 41 are jointly fixed with a limiting plate 42, and the lower surface of the limiting plate 42 is fitted with the upper ends of the plurality of insertion rods 21, and the outer side of the adjusting ring 40 is provided with a plurality of fixing holes 43, and the inner side of the fixing holes 43 is slidably provided with fixing bolts 44, and the outer side of the base column 1 is provided with a plurality of horizontally distributed adjusting holes 45, and the adjusting holes 45 are threadedly fitted with the fixing bolts 44.

[0044] By adopting the above technical solution, the adjustment ring 40 is inserted from above the base column 1, so that the inner side of the adjustment ring 40 slides and fits against the outer side of the base column 1. The adjustment groove 46 inside the adjustment ring 40 assists the adjustment ring 40 in sliding on the base column 1. The height of the height limiting mechanism 4 is adjusted according to actual needs. When the desired height is reached, the fixing bolt 44 is inserted through the fixing hole 43 on the outer side of the adjustment ring 40, threadedly engaging the fixing bolt 44 with the corresponding adjustment hole 45 on the outer side of the base column 1. The fixing bolt 44 is tightened to secure the adjustment ring 40 to the base column 1. At this point, the lower surface of the limiting plate 42, which is fixed to the lower surfaces of the multiple annular reinforcement plates 41 on the outer side of the adjustment ring 40, fits against the upper ends of the multiple insertion rods 21, limiting the insertion rods 21 and thus limiting the scouring depth of the base column 1. The height limiting mechanism 4 allows for flexible height adjustment and limits the scouring depth of the base column 1, while ensuring the stability and durability of the device in complex marine environments.

[0045] An adjusting groove 46 is formed on the inner side of the adjusting ring 40 , and the inner side of the adjusting groove 46 is slidably fitted with the outer side of the base column 1 .

[0046] By adopting the above-mentioned technical solution, the adjustment groove 46 on the inner side of the adjustment ring 40 slides in contact with the outer side of the base column 1, increasing the contact area between the adjustment ring 40 and the base column 1 and improving the sliding stability of the adjustment ring 40 on the base column 1. When adjusting the height of the height limiting mechanism 4, the adjustment groove 46 enables the adjustment ring 40 to move more smoothly on the base column 1, preventing the adjustment ring 40 from shaking or jamming during the sliding process, ensuring accurate and smooth height adjustment, and thus better meeting the height requirements of the height limiting mechanism 4 under the hydrogeological conditions of different sea areas.

[0047] Working Principle: Insert the adjustment ring 40 from above the base column 1, so that the inner side of the adjustment ring 40 slides and fits with the outer side of the base column 1. The adjustment groove 46 on the inner side of the adjustment ring 40 helps the adjustment ring 40 slide on the base column 1. Adjust the height of the height-limiting mechanism 4 according to actual needs. When the height is adjusted to the appropriate height, insert the fixing bolt 44 from the fixing hole 43 on the outside of the adjustment ring 40, so that the fixing bolt 44 is threadedly engaged with the adjustment hole 45 at the corresponding position on the outside of the base column 1. Tighten the fixing bolt 44 to fix the adjustment ring 40 to the base column 1. At this time, the lower surface of the limiting plate 42, which is fixed to the lower surfaces of the multiple annular reinforcement plates 41 on the outside of the adjustment ring 40, fits with the upper ends of the multiple insertion rods 21, limiting the insertion rods 21 and thus limiting the flushing depth of the base column 1.

[0048] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A scour protection device for an offshore wind power pile foundation, comprising a base column (1), characterized in that: A height limiting mechanism (4) is provided on the outside of the base column (1), a position limiting mechanism (2) is provided on the outside of the base column (1), and a protection mechanism (3) is provided on the outside of the position limiting mechanism (2).

2. The scour protection device for offshore wind power pile foundation according to claim 1, characterized in that: The limiting mechanism (2) comprises two arc-shaped limiting frames (20), the inner side of the arc-shaped limiting frame (20) is fitted with the outer side of the base column (1), a plurality of insertion rods (21) are inserted into the upper surface of the arc-shaped limiting frame (20), the lower ends of the insertion rods (21) pass through the lower surface of the arc-shaped limiting frame (20), a plurality of positioning frames (23) are commonly provided on the outer sides of the two arc-shaped limiting frames (20), a rotating rod (25) is fixedly provided on the inner wall of one side of the positioning frame (23), the rotating rod (25) is rotatably fitted with the outer sides of the two arc-shaped limiting frames (20), a positioning bolt (28) is inserted into one side of the positioning frame (23), a plurality of positioning holes (27) are opened on the outer side of the arc-shaped limiting frame (20), the inner sides of the positioning holes (27) are slidably fitted with the outer sides of the positioning bolts (28), and a positioning nut (24) is threadedly sleeved on one end of the positioning bolt (28).

3. The scour protection device for offshore wind power pile foundation according to claim 1, characterized in that: The protection mechanism (3) includes a flow guide protection plate (30), the inner side of the flow guide protection plate (30) is fixedly connected to the outer side of the arc-shaped limit frame (20), a plurality of openings (31) are provided on the outer side of the flow guide protection plate (30), a splicing hole (34) is provided on the inner wall of one end of the opening (31), a splicing screw (35) is provided on the inner side of each two adjacent openings (31), two splicing nuts (32) are sleeved on the outer side of the splicing screw (35), and a sealing block (37) is slidably provided on the inner side of the opening (31).

4. The scour protection device for offshore wind power pile foundation according to claim 1, characterized in that: The height limiting mechanism (4) includes an adjusting ring (40), the inner side of the adjusting ring (40) is slidably fitted with the outer side of the base column (1), the outer side of the adjusting ring (40) is fixed with a plurality of reinforcing plates (41) distributed in an annular shape, the lower surfaces of the plurality of reinforcing plates (41) are commonly fixed with a limiting plate (42), the lower surface of the limiting plate (42) is fitted with the upper ends of the plurality of insertion rods (21), the outer side of the adjusting ring (40) is provided with a plurality of fixing holes (43), the inner sides of the fixing holes (43) are slidably provided with fixing bolts (44), the outer side of the base column (1) is provided with a plurality of adjusting holes (45) distributed in a horizontal direction, the adjusting holes (45) are threadedly fitted with the fixing bolts (44).

5. The scour protection device for offshore wind power pile foundation according to claim 2, characterized in that: The lower ends of the insertion rods (21) are each provided with anti-loosening grooves (22).

6. The scour protection device for offshore wind power pile foundation according to claim 2, characterized in that: A plurality of rotation holes (26) are provided on the outer side of the arc-shaped limiting frame (20), and the rotation holes (26) are rotationally fitted with the rotation rods (25).

7. The scour protection device for offshore wind power pile foundation according to claim 2, characterized in that: A positioning groove (29) is provided on both sides of the positioning frame (23), and the inner side of the positioning groove (29) is slidably fitted with the positioning bolt (28).

8. The scour protection device for offshore wind power pile foundation according to claim 3, characterized in that: A plurality of grooves (33) are formed on the outer side of the deflector protection plate (30), and the grooves (33) are located on one side of the positioning frame (23).

9. The scour protection device for offshore wind power pile foundation according to claim 3, characterized in that: A prying opening (36) is provided on the outer side of the sealing block (37).

10. The scour protection device for offshore wind power pile foundation according to claim 4, characterized in that: An adjustment groove (46) is provided on the inner side of the adjustment ring (40), and the inner side of the adjustment groove (46) is slidably fitted with the outer side of the base column (1).

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