An offshore wind power pile foundation with an anti-scour structure

Abstract

The present invention relates to the field of offshore wind power engineering technology, and discloses an offshore wind power pile foundation with an anti-scour structure, including a wind power single pile foundation, an anti-scour cone cover is provided at the bottom end of the wind power single pile foundation, and stones are filled between the inside of the anti-scour cone cover and the wind power single pile foundation, a plurality of conveying cylinders are arranged at equal distances outside the anti-scour cone cover, and a connecting sleeve is fixedly connected between each conveying cylinder and the outer wall of the anti-scour cone cover, a collecting cylinder is connected to the bottom of the conveying cylinder, and a plurality of through holes are provided on the outer wall of the collecting cylinder, and a conveying mechanism is provided inside the conveying cylinder. The present invention can protect the wind power single pile foundation through the anti-scour cone cover and stones, and can collect gravel and rubble carried by ocean movement, and convey the collected gravel and rubble to the inside of the anti-scour cone cover to fill the formed scour pit, prevent the scour pit from becoming larger, and achieve a good anti-scour effect.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power engineering, and in particular to an offshore wind power pile foundation with an anti-scour structure. Background Art

[0002] With the development of offshore wind farm construction projects, the operating environment of wind turbines has become increasingly complex. Wind turbines at sea are mainly affected by the superposition of multiple complex factors such as wind, load, waves, and ocean currents. The establishment of offshore wind power structures has caused the pile foundations to change the surrounding marine environment. Under the action of ocean power, scour pits will appear around the pile foundations of wind turbines. The impact of waves and tides on the pile foundations will form a horseshoe-shaped vortex on the upstream side of the pile foundation and a vortex shedding on the downstream side.

[0003] A Chinese patent with the patent publication number CN211257044U discloses an umbrella-shaped device for preventing scour of offshore wind power pile foundations, including a top flange, a bottom flange, a movable hook, a weight, a movable frame, a tension spring, an umbrella cloth and an umbrella edge cloth, and the umbrella cloth and the umbrella edge cloth are densely covered with bionic grass. The umbrella cloth and the umbrella edge cloth are connected between two adjacent movable frames; when the movable frame rotates upward around the hinge and the movable hook hooks the weight, the umbrella-shaped device is in a retracted state; when the movable hook releases the weight, the umbrella-shaped device is in an unfolded state. The umbrella-shaped device has a simple structure, consumes less materials, and can play an efficient protective role. The installation method of this umbrella-shaped device is simple and convenient. It only needs to be put on the designated position of the steel pipe column, and the umbrella-shaped device is installed. There is no damage to the pile, no need to pre-treat the seabed, and the protection range is controllable. The construction period is short, saving a lot of manpower, material resources and time. However, although the above-mentioned device can protect the pile foundation, as time goes by, scour pits will appear around the umbrella-shaped device, and then the mud, gravel, etc. inside the umbrella-shaped device will be scoured, thus forming scour pits, resulting in a decrease in the protective effect of the pile foundation.

[0004] In view of this, the present invention proposes an offshore wind power pile foundation with an anti-scouring structure to solve the problems existing in the above-mentioned prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the prior art and to propose an offshore wind power pile foundation with an anti-scour structure.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An offshore wind turbine pile foundation with an anti-scour structure comprises a wind turbine single pile foundation, an anti-scour cone cover is arranged at the bottom end of the wind turbine single pile foundation, and stones are filled between the inside of the anti-scour cone cover and the wind turbine single pile foundation, a plurality of conveying cylinders are arranged at equal distances outside the anti-scour cone cover, and a connecting sleeve is fixedly connected between each conveying cylinder and the outer wall of the anti-scour cone cover, a collecting cylinder is connected to the bottom of the conveying cylinder, and a plurality of through holes are arranged on the outer wall of the collecting cylinder, a conveying mechanism is arranged inside the conveying cylinder, and a discharge cylinder is connected between the outer wall above the conveying cylinder and the outer wall of the top of the anti-scour cone cover, a through opening is opened on the outer wall of one side of the collecting cylinder, and a feeding channel is arranged outside the through opening, and a loading slope is arranged at the opening of the feeding channel.

[0008] Furthermore, the conveying mechanism includes a rotating shaft 1, which is rotatably connected to the top of the conveying cylinder, and the bottom end of the rotating shaft 1 is rotatably connected to the inner wall of the bottom of the collecting cylinder, the outer wall of the rotating shaft 1 is fixedly connected with a spiral auger blade, and the outer wall of the spiral auger blade is provided with a plurality of through holes 1, and the top of the rotating shaft 1 is provided with a plurality of driving blades 1.

[0009] Furthermore, the inner wall of the feed channel is rotatably connected to a rotating shaft three, and the outer wall of the rotating shaft three is fixedly connected to a cam, and the outer wall of one end of the rotating shaft three is provided with a plurality of driving blades two.

[0010] Furthermore, a rotating shaft 2 is provided on one side of the rotating shaft 3, and an inclined disturbance paddle is fixedly connected to the outer wall of the rotating shaft 2, a connecting spring 1 is fixedly connected between the disturbance paddle and the top inner wall of the feed channel, a swing plate is fixedly connected to the top outer wall of the rotating shaft 2, and an arc surface is provided on the side of the swing plate close to the cam.

[0011] Furthermore, the outer wall of the feed channel is fixedly connected to two mounting plates, and a rotating shaft four is rotatably connected between the two mounting plates, and the outer wall of the rotating shaft four is symmetrically fixedly connected to two receiving plates.

[0012] Furthermore, a sliding groove is provided inside the storage plate, and a push plate is slidably connected to the bottom of the sliding groove, a slide plate 1 is fixedly connected to the top of the push plate, and a connecting spring 2 is fixedly connected between the slide plate 1 and the sliding groove.

[0013] Furthermore, a plurality of limit plates 1 are equidistantly arranged at one end of the rotating shaft 4, and a mounting block is arranged on one side of the plurality of limit plates 1, and the mounting block is fixedly connected to the outer wall of the mounting plate.

[0014] Furthermore, a storage cavity is provided inside the mounting block, and the side of the storage cavity close to the limiting plate one is slidably connected to the limiting plate two, the outer wall of one side of the limiting plate two is fixedly connected to the sliding plate two, and a connecting spring three is fixedly connected between the sliding plate two and the inner wall of the storage cavity.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention can protect the wind power single pile foundation through the anti-scour cone cover and stones, and can also collect the gravel and broken stones carried by the ocean movement, and transport the collected gravel and broken stones to the inside of the anti-scour cone cover to fill the formed scour pit, avoid the scour pit from becoming larger, and achieve a good anti-scour effect.

[0017] 2. By setting a disturbance paddle, the rotating shaft three drives the cam to rotate, and the intermittent contact between the cam and the swing plate on the rotating shaft two can make the disturbance paddle reciprocate, thereby enhancing the fluidity of the seawater in the feed channel, so that the seawater in the feed channel carrying sand and gravel can flow into the collection tube, thereby improving the effect of collecting sand and gravel.

[0018] 3. By setting a push plate, under the action of the ocean movement, the rotating shaft 4 can rotate with the push plate, which can push the gravel on the loading slope into the feeding channel, thereby increasing the speed of collecting gravel.

[0019] 4. By setting limit plate 1 and limit plate 2, the turning of shaft 4 can be restricted so that shaft 4 can only rotate in one direction, thereby preventing the push plate from reversing and pushing the gravel on the loading slope down and not entering the feeding channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of an offshore wind power pile foundation with an anti-scour structure proposed in Example 1;

[0021] Figure 2 This is a schematic diagram of the structure of a conveying cylinder of an offshore wind power pile foundation with an anti-scour structure proposed in Example 1;

[0022] Figure 3 This is a schematic diagram of the structure of a feed channel of an offshore wind power pile foundation with an anti-scour structure proposed in Example 1;

[0023] Figure 4 This is a schematic diagram of the second structure of the rotating shaft of an offshore wind power pile foundation with an anti-scour structure proposed in Example 1;

[0024] Figure 5 This is a schematic diagram of the structure of a feed channel of an offshore wind power pile foundation with an anti-scour structure proposed in Example 2;

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of a receiving plate of an offshore wind power pile foundation with an anti-scour structure proposed in Example 2;

[0026] Figure 7 This is a schematic diagram of the structure of a mounting plate portion of an offshore wind power pile foundation with an anti-scour structure proposed in Example 3;

[0027] Figure 8 This is a schematic diagram of the cross-sectional structure of an installation block of an offshore wind power pile foundation with an anti-scour structure proposed in Example 3.

[0028] In the figure: 1. wind power single pile foundation; 2. stone; 3. feeding channel; 4. connecting sleeve; 5. conveying cylinder; 6. anti-scouring cone cover; 7. collecting cylinder; 8. driving blade one; 9. unloading cylinder; 10. spiral auger blade; 11. rotating shaft one; 12. through hole one; 13. through hole two; 14. through port; 15. feeding slope; 16. rotating shaft two; 17. rotating shaft three; 18. cam; 19. connecting spring one; 20. driving blade two; 21. disturbance paddle; 22. swing plate; 23. arc surface; 24. mounting plate; 25. storage plate; 26. rotating shaft four; 27. slide plate one; 28. connecting spring two; 29. ​​sliding groove; 30. pushing plate; 31. limit plate one; 32. limit plate two; 33. mounting block; 34. slide plate two; 35. connecting spring three; 36. storage cavity. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0030] Example 1: Reference Figure 1-Figure 4 An offshore wind power pile foundation with an anti-scouring structure comprises a wind power monopile foundation 1, an anti-scouring truncated cone cover 6 is arranged at the bottom end of the wind power monopile foundation 1, and stones 2 are filled between the inside of the anti-scouring truncated cone cover 6 and the wind power monopile foundation 1, a plurality of conveying cylinders 5 are arranged at equal distances outside the anti-scouring truncated cone cover 6, and a connecting sleeve 4 is fixedly connected between each conveying cylinder 5 and the outer wall of the anti-scouring truncated cone cover 6, a collecting cylinder 7 is connected to the bottom of the conveying cylinder 5, and a plurality of through holes 13 are arranged on the outer wall of the collecting cylinder 7, a conveying mechanism is arranged inside the conveying cylinder 5, and a feeding cylinder 9 is connected between the outer wall above the conveying cylinder 5 and the outer wall of the top of the anti-scouring truncated cone cover 6, a through opening 14 is opened on the outer wall of one side of the collecting cylinder 7, and the outer side of the through opening 14 A feeding channel 3 is provided, and a loading slope 15 is provided at the opening of the feeding channel 3. The wind power single pile foundation 1 can be protected by the stones 2 and the anti-scouring conical cover 6, and the gravel carried by the ocean movement will enter the feeding channel 3 through the loading slope 15. As the seawater continues to scour, the gravel in the feeding channel 3 will move into the collecting cylinder 7, and the seawater will flow out through the through hole 2 13. During the ocean movement, the conveying mechanism in the conveying cylinder 5 will move, and the gravel in the collecting cylinder 7 can be conveyed to the top of the conveying cylinder 5. Then the gravel enters the anti-scouring conical cover 6 through the lower barrel 9 to fill the formed scouring pit, prevent the scouring pit from becoming larger, and achieve a good anti-scouring effect.

[0031] As a further solution in the present invention, the conveying mechanism includes a rotating shaft 11, which is rotatably connected to the top of the conveying cylinder 5, and the bottom end of the rotating shaft 11 is rotatably connected to the inner wall of the bottom of the collecting cylinder 7, the outer wall of the rotating shaft 11 is fixedly connected with a spiral auger blade 10, and the outer wall of the spiral auger blade 10 is provided with a plurality of through holes 12, and the top of the rotating shaft 11 is provided with a plurality of driving blades 8, through which the rotating shaft 11 in the conveying cylinder 5 can be rotated, and the rotating shaft 11 causes the spiral auger blade 10 to rotate, so that the gravel in the collecting cylinder 7 can be transported to the top of the conveying cylinder 5, and because the spiral auger blade 10 is provided with a plurality of through holes 12, the seawater can flow downward through the through holes 12 and will not move upward under the action of the spiral auger blade 10.

[0032] As a further solution in the present invention, the inner wall of the feed channel 3 is rotatably connected to a rotating shaft 3 17, and the outer wall of the rotating shaft 3 17 is fixedly connected to a cam 18. The outer wall of one end of the rotating shaft 3 17 is provided with a plurality of driving blades 20, and the driving blades 20 can make the rotating shaft 3 17 rotate with the cam 18.

[0033] As a further solution in the present invention, a rotating shaft 2 16 is provided on one side of the rotating shaft 3 17, and an inclined disturbance paddle 21 is fixedly connected to the outer wall of the rotating shaft 2 16, a connecting spring 19 is fixedly connected between the disturbance paddle 21 and the top inner wall of the feed channel 3, a swing plate 22 is fixedly connected to the top outer wall of the rotating shaft 2 16, and an arc surface 23 is provided on the side of the swing plate 22 close to the cam 18. During this process, the cam 18 will intermittently contact the arc surface 23 of the swing plate 22 on the rotating shaft 2 16, and with the cooperation of the connecting spring 19, the rotating shaft 2 16 is moved back and forth with the disturbance paddle 21 through the swing plate 22, thereby enhancing the fluidity of the seawater in the feed channel 3, so that the seawater in the feed channel 3 carrying gravel can flow into the collecting barrel 7, thereby improving the effect of collecting gravel.

[0034] Working principle: The wind turbine monopile foundation 1 can be protected by stones 2 and anti-scouring conical cover 6, and the gravel carried by the ocean movement will enter the feeding channel 3 through the loading slope 15. As the seawater continues to scour, the gravel in the feeding channel 3 will move into the collecting cylinder 7, and the seawater will flow out through the through hole 2 13. During the ocean movement, the driving blade 8 can rotate the rotating shaft 11 in the conveying cylinder 5, and the rotating shaft 11 causes the spiral auger blade 10 to rotate, so that the gravel in the collecting cylinder 7 can be transported to the top of the conveying cylinder 5. Because a plurality of through holes 12 are provided on the spiral auger blade 10, the seawater can flow downward through the through hole 12 and will not move upward under the action of the spiral auger blade 10. The gravel above the inside of the conveying cylinder 5 enters the anti-scouring conical cover 6 through the lower barrel 9 to fill the formed scouring pit to prevent the scouring pit from becoming larger, thereby achieving a good anti-scouring effect.

[0035] Example 2: Reference Figure 1-Figure 6 , an offshore wind power pile foundation with an anti-scour structure. Compared with Example 1, on the basis of Example 1, two mounting plates 24 are fixedly connected to the outer wall of the feed channel 3, and a rotating shaft four 26 is rotatably connected between the two mounting plates 24. Two receiving plates 25 are symmetrically fixedly connected to the outer wall of the rotating shaft four 26. The rotating shaft four 26 can be rotated by the thrust of the receiving plates 25 when the seawater moves.

[0036] As a further solution in the present invention, a sliding groove 29 is provided inside the storage plate 25, and a push plate 30 is slidably connected to the bottom of the sliding groove 29, and a slide plate 27 is fixedly connected to the top of the push plate 30, and a connecting spring 28 is fixedly connected between the slide plate 27 and the sliding groove 29. During the rotation process, the push plate 30 on the storage plate 25 will intermittently contact the feeding slope 15. When in contact, the push plate 30 will compress the connecting spring 28 and shrink it into the sliding groove 29 of the push plate 30, so that the bottom end of the push plate 30 will be in close contact with the feeding slope 15, and the gravel and crushed stones on the feeding slope 15 can be pushed into the feeding channel 3, thereby improving the speed of collecting gravel.

[0037] Working principle: The thrust of the storage plate 25 by the movement of seawater can cause the rotating shaft 26 to rotate. During the rotation, the push plate 30 on the storage plate 25 will intermittently contact the feeding slope 15. When in contact, the push plate 30 will compress the connecting spring 28 and retract it into the sliding groove 29 of the push plate 30, so that the bottom end of the push plate 30 will be in close contact with the feeding slope 15, and the gravel and crushed stones on the feeding slope 15 can be pushed into the feeding channel 3, thereby increasing the speed of collecting gravel.

[0038] Example 3: Reference Figure 1-Figure 8 , an offshore wind power pile foundation with an anti-scour structure. Compared with Example 2, on the basis of Example 2, a plurality of limit plates 31 are equidistantly arranged at one end of a rotating shaft four 26, and a mounting block 33 is arranged on one side of the plurality of limit plates 31. The mounting block 33 is fixedly connected to the outer wall of the mounting plate 24. When the rotating shaft four 26 rotates, the plurality of limit plates 31 will rotate synchronously.

[0039] As a further solution of the present invention, a storage cavity 36 is provided inside the mounting block 33, and the storage cavity 36 is slidably connected to the limiting plate 2 32 on one side close to the limiting plate 1 31, and a slide plate 2 34 is fixedly connected to the outer wall of one side of the limiting plate 2 32, and a connecting spring 35 is fixedly connected between the slide plate 2 34 and the inner wall of the storage cavity 36. When the rotation direction of the rotating shaft 4 26 enables the pushing plate 30 to push the gravel into the feeding channel 3, the arc surface of the limiting plate 1 31 contacts the arc surface of the limiting plate 2 32, thereby The limit plate 2 32 is pushed into the mounting block 33, and the limit plate 2 32 will not hinder the rotation of the rotating shaft 4 26. When the rotation direction of the rotating shaft 4 26 is opposite to that described above, the vertical surface of the limit plate 1 31 contacts the vertical surface of the limit plate 2 32, and the limit plate 2 32 cannot enter the mounting block 33. The turning direction of the rotating shaft 4 26 can be restricted so that the rotating shaft 4 26 can only rotate in one direction, thereby preventing the pushing plate 30 from reversing and pushing the gravel on the loading slope 15 down and not entering the feeding channel 3.

[0040] Working principle: when the rotating shaft 4 26 rotates, it will synchronously rotate with multiple limit plates 1 31. When the rotation direction of the rotating shaft 4 26 enables the push plate 30 to push the gravel into the feed channel 3, the arc surface of the limit plate 1 31 contacts the arc surface of the limit plate 2 32, thereby pushing the limit plate 2 32 into the mounting block 33. The limit plate 2 32 will not hinder the rotation of the rotating shaft 4 26. When the rotation direction of the rotating shaft 4 26 is opposite to the above, the vertical surface of the limit plate 1 31 contacts the vertical surface of the limit plate 2 32, and the limit plate 2 32 cannot enter the mounting block 33. The turning direction of the rotating shaft 4 26 can be restricted so that the rotating shaft 4 26 can only rotate in one direction, thereby preventing the push plate 30 from reversing and pushing the gravel on the loading slope 15 down and not entering the feed channel 3.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An offshore wind power pile foundation with an anti-scouring structure, comprising a wind power monopile foundation (1), wherein an anti-scouring truncated cone cover (6) is arranged at the bottom end of the wind power monopile foundation (1), and stones (2) are filled between the inside of the anti-scouring truncated cone cover (6) and the wind power monopile foundation (1), characterized in that: A plurality of conveying cylinders (5) are arranged at equal distances outside the anti-scour cone cover (6), and a connecting sleeve (4) is fixedly connected between each conveying cylinder (5) and the outer wall of the anti-scour cone cover (6). The bottom of the conveying cylinder (5) is connected to a collecting cylinder (7), and the outer wall of the collecting cylinder (7) is provided with a plurality of through holes (13). A conveying mechanism is arranged inside the conveying cylinder (5), and a discharge cylinder (9) is connected between the upper outer wall of the conveying cylinder (5) and the top outer wall of the anti-scour cone cover (6). A through opening (14) is opened on the outer wall of one side of the collecting cylinder (7), and a feeding channel (3) is arranged outside the through opening (14), and a feeding slope (15) is arranged at the opening of the feeding channel (3); The conveying mechanism comprises a rotating shaft (11), the rotating shaft (11) is rotatably connected to the top of the conveying cylinder (5), and the bottom end of the rotating shaft (11) is rotatably connected to the inner wall of the bottom of the collecting cylinder (7), the outer wall of the rotating shaft (11) is fixedly connected with a spiral auger blade (10), and the outer wall of the spiral auger blade (10) is provided with a plurality of through holes (12), and the top end of the rotating shaft (11) is provided with a plurality of driving blades (8); The inner wall of the feed channel (3) is rotatably connected to a rotating shaft (17), and the outer wall of the rotating shaft (17) is fixedly connected to a cam (18), and the outer wall of one end of the rotating shaft (17) is provided with a plurality of driving blades (20); A rotating shaft 2 (16) is arranged on one side of the rotating shaft 3 (17), and an inclined disturbance paddle (21) is fixedly connected to the outer wall of the rotating shaft 2 (16), a connecting spring 1 (19) is fixedly connected between the disturbance paddle (21) and the top inner wall of the feed channel (3), a swing plate (22) is fixedly connected to the top outer wall of the rotating shaft 2 (16), and a curved surface (23) is arranged on the side of the swing plate (22) close to the cam (18).

2. The offshore wind power pile foundation with an anti-scour structure according to claim 1, characterized in that: The outer wall of the feed channel (3) is fixedly connected to two mounting plates (24), and a rotating shaft (26) is rotatably connected between the two mounting plates (24), and the outer wall of the rotating shaft (26) is symmetrically fixedly connected to two receiving plates (25).

3. The offshore wind power pile foundation with an anti-scour structure according to claim 2, characterized in that: The storage plate (25) is provided with a sliding groove (29) inside, and a push plate (30) is slidably connected to the bottom of the sliding groove (29), and a slide plate (27) is fixedly connected to the top of the push plate (30), and a connecting spring (28) is fixedly connected between the slide plate (27) and the sliding groove (29).

4. The offshore wind power pile foundation with an anti-scour structure according to claim 3, characterized in that: A plurality of limit plates (31) are equidistantly arranged at one end of the rotating shaft (26), and a mounting block (33) is arranged on one side of the plurality of limit plates (31), wherein the mounting block (33) is fixedly connected to the outer wall of the mounting plate (24).

5. The offshore wind power pile foundation with an anti-scour structure according to claim 4, characterized in that: A storage cavity (36) is provided inside the mounting block (33), and the storage cavity (36) is slidably connected to the limiting plate (32) on one side close to the limiting plate (31), and a slide plate (34) is fixedly connected to the outer wall of one side of the limiting plate (32), and a connecting spring (35) is fixedly connected between the slide plate (34) and the inner wall of the storage cavity (36).

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