A self-repairing and anti-scouring device for offshore wind power pile foundation

Abstract

The present invention discloses a self-repairing and anti-scouring device for offshore wind power pile foundation, which relates to the technical field of offshore wind power pile foundation protection. The key points of the technical solution are: comprising a pile foundation column, a track connection component, a self-repairing component and an anti-scouring component, wherein the pile foundation column is fixedly connected with the anti-scouring component at one end near the bottom, and the pile foundation column is fixedly connected with a fixed column at one end near the top, and the fixed column is fixedly connected with a connecting ring, and the connecting ring is fixedly connected with a movable track, and the tail of the movable track is connected with the anti-scouring component, and the movable track is movably connected with the self-repairing component. The device can effectively prevent the loss of sand and soil near the offshore wind power pile foundation, and can autonomously repair the corroded parts of the wind power pile foundation.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power pile foundation protection, and more specifically, to a self-repairing and anti-scouring device for an offshore wind power pile foundation. Background Art

[0002] Offshore wind power has the characteristics of abundant resources, high power generation utilization hours, no land occupation and suitability for large-scale development. Therefore, it is regarded as a key area for the development of renewable energy in China.

[0003] The offshore wind power pile foundation is used to support the entire offshore wind turbine. Currently, many accidents involving offshore wind turbines are caused by unstable pile foundations. Therefore, it is extremely important to solidify the connection position of the pile foundation with the seabed and prevent the loss of sand and soil near the pile foundation. In addition, the salt content in seawater is relatively high, and the wind power pile foundation is generally a metal product, which is easily corroded. Although spraying paint on the surface of the pile foundation is usually used to avoid corrosion of the offshore wind power pile foundation. However, the seabed conditions are complicated. In many cases, the offshore wind power pile foundation will still be damaged by the influence of mud or marine life. In the long run, it will deteriorate into corrosion and affect the stability of the entire pile foundation. At the same time, due to the high cost of offshore wind power pile foundations, they generally need to be used for a long time. In order to extend its service life as much as possible and maintain its stability, the present invention proposes a self-repair and anti-scouring device for offshore wind power pile foundations. Summary of the invention

[0004] The purpose of the present invention is to provide a self-repair and anti-scour device for offshore wind turbine pile foundations, which can effectively prevent the loss of sand and soil near the offshore wind turbine pile foundations and can autonomously repair the corroded parts of the wind turbine pile foundations.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: a self-repairing anti-scour device for an offshore wind power pile foundation, comprising a pile foundation column, a track connection assembly, a self-repair assembly and an anti-scour assembly, wherein the pile foundation column is fixedly connected to the anti-scour assembly at one end near the bottom, and the pile foundation column is fixedly connected to a fixed column at one end near the top, and the fixed column is fixedly connected to a connecting ring, and the connecting ring is fixedly connected to a movable track, the tail of the movable track is connected to the anti-scour assembly, and the movable track is movably connected to the self-repair assembly.

[0006] By adopting the above technical solution, the pile foundation column is inserted into the sand on the seabed, the fixed column and the connecting ring are used to connect the pile foundation column, the movable track and the anti-scour component, the movable track is used for the self-repair component to move, so as to facilitate the self-repair of the pile foundation column, and the anti-scour component is used to prevent the waves from washing away the sand near the pile foundation column. This device can effectively prevent the loss of sand near the offshore wind power pile foundation, and can also autonomously repair the corroded parts of the wind power pile foundation.

[0007] The present invention is further configured such that: the movable track is connected to the self-repair component via a track connection component.

[0008] By adopting the above technical solution, the track connection component connects the self-repair component and the movable track, so that the self-repair component can move up and down on the movable track.

[0009] The present invention is further configured as follows: the anti-scour component comprises a cement blanket, the top of the cement blanket is a water-absorbing layer, the bottom is a hydrophobic layer, and the hydrophobic layer comprises composite fibers and cement slurry wrapping the composite fibers.

[0010] By adopting the above technical solution, after the cement blanket enters underwater, the water-absorbing layer absorbs water fully to increase its own weight, so that it will not be easily washed around by the water flow underwater. The surface of the composite fiber of the hydrophobic layer is wrapped with cement slurry, which enhances the hardness of each composite fiber. When the pile foundation column is inserted into the sand on the seabed, the cement blanket fits the surface of the sand on the seabed, and the composite fibers with a certain hardness penetrate into the sand, forming a system similar to the root system of herbaceous vegetation. It can effectively prevent the loss of surrounding sand and maintain the stability of the pile foundation column.

[0011] The present invention is further configured as follows: the length of the composite fiber is 5-10 mm.

[0012] By adopting the above technical solution, if the composite fiber is too long, its hardness will be affected to a certain extent, and it will not be able to penetrate into the sand. If the composite fiber is too short, it will not be able to prevent the surrounding sand from being lost.

[0013] The present invention is further configured as follows: the thickness of the cement slurry wrapping the composite fiber is 0.1-0.4 mm.

[0014] By adopting the above technical solution, the thickness of the cement slurry package determines the hardness of the composite fiber, and the hardness determines its ability to penetrate into the sand. At the same time, if the thickness of the package is too thick, the ability to solidify the sand through the fiber system is lost.

[0015] The present invention is further configured as follows: the self-repair component includes a movable ring, and an annular track 1, an annular track 2 and an annular track 3 are provided on the inner side of the movable ring; the annular track 1 is connected to an underwater shooting device via a track connecting component, the annular track 2 is connected to a telescopic rod 2 via a track connecting component, the telescopic rod 2 is connected to an automatic paint sprayer, the annular track 3 is connected to the telescopic rod 1 via a track connecting component, the telescopic rod 1 is fixedly connected to a rotating disk, and the rotating disk is fixedly connected to a grinder.

[0016] By adopting the above technical solution, the self-repair component can move up and down on the movable track, and the underwater shooting device can move on the circular track one, so the underwater shooting device can actually realize the observation of the entire pile foundation column from top to bottom. Similarly, the grinder itself moves on the circular track three, and at the same time follows the way of moving up and down of the movable circle, and can also grind to any position of the pile foundation column, and the automatic paint sprayer can also realize the paint repair of any position of the pile foundation column. The setting of the telescopic rod one allows the grinder to be properly retracted when the grinder is not needed to avoid friction with the pile foundation column and damage to the outer coating of the pile foundation column. When the grinder is needed, the grinder is extended so that it fits with the pile foundation column to facilitate grinding. The setting of the rotating disk allows it to drive the grinder to rotate to achieve the purpose of grinding. Similarly, the setting of the telescopic rod two also allows the automatic paint sprayer to fit with the pile foundation column when needed, and avoids the collision between the automatic paint sprayer and the pile foundation column when it is not needed.

[0017] The present invention is further configured as follows: the track connection assembly includes a rotating rod and a track connection column, the rotating rod is movably connected to the track connection column, motors are symmetrically provided at both ends of the rotating rod, and a rotating wheel is provided between the motor and the track connection column.

[0018] By adopting the above technical solution, the track connection column is used to connect the components used with the track connection component and the track, such as the underwater shooting device, grinder, automatic paint sprayer, etc. in the present invention. The motor is used to drive the rotating rod to rotate, and then drive the rotating wheel to rotate, so that the rotating wheel can move in the track.

[0019] The present invention is further configured as follows: a frosted surface is provided at the bottom of the grinder.

[0020] By adopting the above technical solution, the frosted surface is used to grind the corroded and rusted area to make the surface smooth before painting, so that the subsequently sprayed paint can better cover the area and is more conducive to protecting the area.

[0021] The present invention is further configured as follows: the automatic paint sprayer includes a cavity, a paint storage tank and a drainage cavity arranged around the paint storage tank, the outer edge of the cavity is integrally connected to the outer edge of the drainage cavity, a water pump is provided in the drainage cavity, a one-way drainage valve is externally connected to the water pump, the paint storage tank is provided with a one-way nozzle on the side facing the cavity, and the drainage cavity is provided with a water inlet hole on the side facing the cavity.

[0022] By adopting the above technical solution, since the device is used underwater, it is almost impossible to spray paint directly on the part that needs repair. Even if it is successfully sprayed on the part, the sprayed paint cannot dry to form a protective layer to achieve corrosion protection for the pile foundation column. Therefore, this structure is specially set up, and when painting is needed, the automatic paint sprayer is adjusted to a suitable position. The automatic paint sprayer is fitted with the pile foundation column through the telescopic rod 2, and then the water in the cavity is pumped out by the water pump and discharged through the one-way drain valve. Then the part is painted. After the painting is completed, wait for 20-30 minutes before retracting the telescopic rod 2. This waiting time is conducive to the drying of the paint, and the subsequent corrosion resistance is also stronger.

[0023] The present invention is further configured as follows: an anti-stripping thorn-proof device is provided on the outer surface of the pile foundation column below the anti-scour component, a hollow column is provided inside the pile foundation near the bottom surface, and a cross fixing frame is provided inside the hollow column.

[0024] By adopting the above technical solution, the anti-stripping setting allows the pile foundation column to be inserted into the sand, so that it can strengthen the fixation between the pile foundation column and the sand and prevent it from shaking. The setting of the hollow column allows part of the sand to directly enter the interior of the pile foundation column, and the setting of the cross fixing frame also strengthens the fixation between the pile foundation column and the sand.

[0025] In summary, the present invention has the following beneficial effects:

[0026] 1. The present invention sets an underwater shooting device to shoot the situation around the pile foundation column. When it is found that the surface is damaged or rusted, it can be polished smooth by a grinder and then painted by an automatic paint sprayer to realize automatic repair of the pile foundation column.

[0027] 2. The present invention sets a cement blanket, and the composite fiber wrapped in cement at the bottom of the cement blanket is embedded in the seabed to form a system to prevent sand loss, which effectively prevents the sand around the pile foundation column from being washed away by water flow, avoids the loss of sand around the pile foundation column due to water flow, and thus avoids the problem of instability of the pile foundation column.

[0028] 3. By setting up anti-stripping and hollow columns near the bottom of the pile foundation column, and setting up a cross fixing frame in the hollow column, the degree of solidification between the pile foundation column itself and the seabed sand is effectively improved, thereby helping to maintain the stability of the pile foundation column.

[0029] 4. In summary, this device provides a device that can effectively prevent the loss of sand and soil around the pile foundation column, and at the same time autonomously repair the damaged and corroded parts of the pile foundation column. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of a device in an embodiment of the present invention;

[0031] Figure 2 is a schematic structural diagram of a track connection assembly in an embodiment of the present invention;

[0032] Figure 3 is a schematic diagram of the structure of the movable track in an embodiment of the present invention;

[0033] Figure 4 is a top view of a self-repairing component in an embodiment of the present invention;

[0034] Figure 5 is a schematic structural diagram of the inner side of the active circle in an embodiment of the present invention;

[0035] Figure 6 is a schematic diagram of the connection between the underwater shooting device and the circular track 1 in an embodiment of the present invention;

[0036] Figure 7 is a schematic diagram of the connection between the automatic paint sprayer and the circular track 2 in an embodiment of the present invention;

[0037] Figure 8 Schematic diagram of the bottom surface of the automatic paint sprayer in an embodiment of the present invention;

[0038] Fig. 9 is a cross-sectional view of an automatic paint sprayer according to an embodiment of the present invention;

[0039] Fig.10 is a schematic diagram of the connection between the grinder and the circular track three in an embodiment of the present invention;

[0040] Fig.11 2 is a bottom schematic diagram of a grinder in an embodiment of the present invention.

[0041] In the figure: 1. pile foundation column; 2. movable track; 3. connecting ring; 4. fixed column; 5. movable ring; 6. track connecting column; 7. cement blanket; 8. anti-stripping; 9. cross fixing frame; 10. underwater shooting device; 11. automatic paint sprayer; 12. grinder; 13. circular track one; 14. circular track two; 15. circular track three; 16. motor; 17. rotating wheel; 18. rotating rod; 19. telescopic rod one; 20. rotating disk; 21. one-way nozzle; 22. frosted surface; 23. hollow column; 24. water inlet hole; 25. cavity; 26. water pump; 27. paint storage tank; 28. one-way drain valve; 29. ​​telescopic rod two. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-11 The present invention is described in further detail.

[0043] Embodiment: A self-repair and anti-scouring device for offshore wind power pile foundation, such as Figure 1-11As shown, it includes a pile foundation column 1, a track connection assembly, a self-repair assembly and an anti-scouring assembly. In this embodiment, the track connection assembly is used in a total of 4 places, namely, the self-repair assembly is connected to the movable track 2 through the track connection assembly; the underwater shooting device 10 is connected to the circular track 1 13 through the track connection assembly; the automatic paint sprayer 11 is connected to the circular track 2 14 through the track connection assembly, and the grinder 12 is connected to the circular track 3 15 through the track connection assembly. The track connection assembly includes a rotating rod 18 and a track connection column 6, the rotating rod 18 is movably connected to the track connection column 6, the two ends of the rotating rod 18 are symmetrically provided with motors 16, and a rotating wheel 17 is provided between the motor 16 and the track connection column 6.

[0044] The anti-scour component fits with the seabed underwater and is fixedly connected to the pile foundation column 1. The pile foundation column 1 is fixedly connected to the fixed column 4 above, and the fixed column 4 is fixedly connected to the connecting ring 3. There are 3 fixed columns 4 in total, and the angle between every two fixed columns 4 is 120° to maintain the stability of the connecting ring 3. The connecting ring 3 is fixedly connected to the movable track 2, so that the movable track 2 is set around the pile foundation column 1, and the movable track 2 is also provided with 3 tracks. The movable ring 5 is connected to the movable track 2 through 3 track connection components, so that the movable ring 5 moves up and down in a relatively horizontal state. The tail of the movable track 2 is connected to the anti-scour component, which naturally makes the anti-scour component open to present a plane. When it is finally fitted with the seabed, it can maximize the area of ​​the two fitting together, and effectively protect the mud and sand near the pile foundation column 1.

[0045] As a preferred solution of this embodiment, the self-repairing assembly includes a movable ring 5, and a circular track 1 13, a circular track 2 14 and a circular track 3 15 are arranged inside the movable ring 5. The circular track 1 13 is connected to the underwater shooting device 10 through a track connection assembly. The circular track 2 14 is connected to a telescopic rod 2 29 through a track connection assembly, and the telescopic rod 2 29 is connected to an automatic paint sprayer 11. The automatic paint sprayer 11 includes a cavity 25, a paint storage tank 27 and a drainage cavity arranged around the paint storage tank 27. The outer edge of the cavity 25 is integrally connected to the outer edge of the drainage cavity. A water pump 26 is arranged in the drainage cavity, and a one-way drainage valve 28 is connected to the water pump 26. The paint storage tank 27 is provided with a one-way nozzle 21 on the side facing the cavity 25, and a water inlet hole 24 is arranged on the side facing the cavity 25. The circular track 3 15 is connected to a telescopic rod 19 through a track connection assembly, and the telescopic rod 19 is fixedly connected to a rotating disk 20, and the rotating disk 20 is fixedly connected to a grinder 12. The bottom of the grinder 12 is provided with a frosted surface 22 .

[0046] As a preferred solution of this embodiment, the anti-scour component includes a cement blanket 7, the top of the cement blanket 7 is a water-absorbing layer, the bottom is a hydrophobic layer, and the hydrophobic layer includes composite fibers and cement slurry wrapping the composite fibers. The length of the composite fibers is 5-10 mm, and the thickness of the cement slurry wrapping the composite fibers is 0.1-0.4 mm.

[0047] As a preferred solution of this embodiment, an anti-stripping thorn 8 is provided on the outer surface of the pile foundation column 1 below the anti-scour component, and a hollow column 23 is provided inside the pile foundation column 1 near the bottom surface, and a cross fixing frame 9 is provided inside the hollow column 23.

[0048] In this embodiment, only part of the structure of the pile foundation column 1 is presented, not the entire structure of the offshore wind power pile foundation. The power required by each component in the device can be achieved by setting up a power supply component. The offshore wind power pile is basically used for power generation, and a small part of its own power generation can be used to maintain the power required by the device. In addition, the underwater shooting device 10, motor 16, automatic paint sprayer 11, grinder 12 and other devices mentioned in this device can be controlled by a controller, and the operation of the device can be assisted by setting up receivers, processors and other structures. This type of components are necessary components for the normal operation of the device, and belong to the more mature technology in the prior art, so they are not included in the scope of protection of this technical solution.

[0049] Working principle: When the device is in use, the cement blanket 7 fits with the seabed, and the hydrophobic layer at the bottom of the cement blanket 7 can take root in the seabed. The composite fiber with a certain hardness naturally forms a sand fixation system. Its principle is similar to planting herbaceous vegetation on land. The roots of the vegetation protect the water and soil from being lost.

[0050] The hollow column 23 arranged near the bottom end of the pile foundation column 1, the cross fixing frame 9 and the anti-slip thorns 8 arranged near the bottom outside the pile foundation column 1 can make it fit more tightly and firmly with the mud and sand on the seabed and less likely to shake.

[0051] The damaged or rusted part of the pile foundation column 1 is photographed by the underwater shooting device 10, and then the grinder 12 is adjusted to the corresponding position to grind the part, and then the automatic paint sprayer 11 is used to spray paint the part to ensure that it will not be corroded or rusted by seawater in the future.

[0052] In addition, since the device is used underwater, it is virtually impossible to spray paint directly on the part that needs repair. Even if the part is successfully sprayed, the paint sprayed cannot dry to form a protective layer to achieve corrosion protection for the pile foundation column 1. Therefore, an automatic paint sprayer 11 is specially provided. When painting is required, the automatic paint sprayer 11 is adjusted to a suitable position. The automatic paint sprayer 11 is fitted with the pile foundation column 1 through the telescopic rod 29, and then the water pump 26 draws out the water in the cavity 25 and discharges it through the one-way drain valve 28, and then the part is painted. After the painting is completed, wait for 20-30 minutes before retracting the telescopic rod 29. This waiting time is conducive to the drying of the paint, and the subsequent corrosion resistance is also stronger.

[0053] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A self-repair and anti-scour device for offshore wind power pile foundation, characterized by: The invention comprises a pile foundation column (1), a track connection component, a self-repair component and an anti-scour component, wherein the pile foundation column (1) is fixedly connected to the anti-scour component at one end near the bottom, the pile foundation column (1) is fixedly connected to the fixed column (4) at one end near the top, the fixed column (4) is fixedly connected to a connecting ring (3), the connecting ring (3) is fixedly connected to a movable track (2), the tail of the movable track (2) is connected to the anti-scour component, and the movable track (2) is movably connected to the self-repair component; the movable track (2) is connected to the self-repair component via the track connection component; the anti-scour component comprises a cement blanket (7), the top of the cement blanket (7) is a water-absorbing layer, the bottom is a hydrophobic layer, and the hydrophobic layer comprises composite fibers and cement slurry wrapping the composite fibers; The self-repairing assembly comprises a movable ring (5), wherein the inner side of the movable ring (5) is provided with an annular track 1 (13), an annular track 2 (14) and an annular track 3 (15), wherein the annular track 1 (13) is connected to an underwater shooting device (10) via a track connection assembly, wherein the annular track 2 (14) is connected to a telescopic rod 2 (29) via a track connection assembly, wherein the telescopic rod 2 (29) is connected to an automatic paint sprayer (11), wherein the annular track 3 (15) is connected to a telescopic rod 1 (19) via a track connection assembly, wherein the telescopic rod 1 (19) is fixedly connected to a rotating disk (20), wherein the rotating disk (20) is fixedly connected to a grinder (12); The track connection assembly comprises a rotating rod (18) and a track connection column (6), wherein the rotating rod (18) is movably connected to the track connection column (6), motors (16) are symmetrically arranged at both ends of the rotating rod (18), and a rotating wheel (17) is arranged between the motor (16) and the track connection column (6).

2. The self-repairing and anti-scouring device for offshore wind power pile foundation according to claim 1 is characterized in that: The length of the composite fiber is 5-10 mm.

3. The self-repairing and anti-scouring device for offshore wind power pile foundation according to claim 1 is characterized in that: The thickness of the cement slurry wrapping the composite fiber is 0.1-0.4 mm.

4. The self-repairing and anti-scouring device for offshore wind power pile foundation according to claim 1 is characterized in that: The bottom of the grinder (12) is provided with a frosted surface (22).

5. The self-repairing and anti-scouring device for offshore wind power pile foundation according to claim 1 is characterized by: The automatic paint sprayer (11) comprises a cavity (25), a paint storage tank (27) and a drainage cavity arranged around the paint storage tank (27); the outer edge of the cavity (25) is integrally connected to the outer edge of the drainage cavity; a water pump (26) is arranged in the drainage cavity; a one-way drainage valve (28) is externally connected to the water pump (26); a one-way nozzle (21) is arranged on the side of the paint storage tank (27) facing the cavity (25); and a water inlet hole (24) is arranged on the side of the drainage cavity facing the cavity (25).

6. The self-repairing and anti-scouring device for offshore wind power pile foundation according to claim 1 is characterized by: The pile foundation column (1) is provided with an anti-stripping (8) on its outer surface below the anti-scour component, and a hollow column (23) is provided inside the pile foundation near the bottom surface, and a cross fixing frame (9) is provided inside the hollow column (23).

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