Protective device for offshore wind power foundation

Abstract

The utility model relates to a protection device for an offshore wind power foundation, the wind power foundation comprises a pile, the protection device comprises a buoyancy net cage and an aquaculture net cage, the aquaculture net cage is provided with a first buffer space, and the buoyancy net cage is contained in the first buffer space and is provided with a second buffer space; the pile penetrates through the buoyancy net cage, and the buoyancy net cage can move in the axial direction of the pile. By means of the technical scheme, the protection device can improve the protection effect on the offshore wind power foundation.

Description

Technical Field

[0001] The present disclosure relates to the technical field of offshore wind power foundation protection, and in particular, to a protection device for an offshore wind power foundation. Background Art

[0002] Offshore wind turbine foundations, as the supporting structure of offshore wind turbines, are usually arranged on the seabed below sea level. This makes it easy for scour pits to form on the wind turbine foundations under the influence of tides and waves, affecting the stability of the wind turbine foundations themselves.

[0003] Among the related technologies, the anti-scouring measures for offshore wind power foundations include dumping and filling (sand belts, stone throwing), solidified soil protection, geotextiles (sand blankets, geotextile compaction, chain blocks, etc.), bionic aquatic weed management and other methods. The protection effect is not good, and the protection structure is prone to cause secondary damage to the wind power foundation under the impact of water flow. Utility Model Content

[0004] The purpose of the present disclosure is to provide a protective device for an offshore wind power foundation, which can improve the protective effect of the offshore wind power foundation.

[0005] In order to achieve the above-mentioned objectives, the present disclosure provides a protective device for an offshore wind power foundation, wherein the wind power foundation includes a pile, and the protective device includes a buoyancy cage and a breeding cage, wherein the breeding cage has a first buffer space, and the buoyancy cage is accommodated in the first buffer space and has a second buffer space, and the pile passes through the buoyancy cage, and the buoyancy cage can move along the axial direction of the pile.

[0006] Optionally, the buoyancy cage includes a main body and at least one connecting member, wherein the connecting member is slidably mounted on the outside of the pile and can rotate along the circumference of the pile, and the main body is connected to the connecting member.

[0007] Optionally, the connecting member includes a connecting plate and a plurality of rolling shafts, the rolling shafts are rotatably mounted on the connecting plate and in contact with the pile, the connecting plate is provided with a through hole for the pile to pass through, the plurality of rolling shafts are arranged at intervals along the circumference of the pile, and the axial direction of the rolling shafts extends along the axial direction of the pile.

[0008] Optionally, the connecting plate is provided with a plurality of connecting holes for connecting the main body.

[0009] Optionally, the connecting piece is made of polymer material.

[0010] Optionally, the number of the connecting members is two, and the two connecting members are arranged at intervals along the axial direction of the pile column. The main body includes a first mesh and a second mesh arranged relatively to each other, and the first mesh and the second mesh are respectively connected to the two connecting members, wherein the distance between the first mesh and the second mesh gradually decreases away from the pile column in a direction perpendicular to the pile column.

[0011] Optionally, an inner net is provided in the buffer space and is arranged along the circumference of the pile column. The two ends of the inner net are respectively connected to the first mesh and the second mesh to separate the first buffer space into a breeding area and a transition area. The pile column is arranged in the transition area.

[0012] Optionally, the buoyancy cage includes a plurality of foam pieces, and the plurality of foam pieces are radially arranged on the first mesh sheet and / or the second mesh sheet with the pile as the center.

[0013] Optionally, the wind power foundation includes a pile foundation, the aquaculture cage is arranged around the pile foundation and forms the first buffer space, and the buoyancy cage is connected to the aquaculture cage via a flexible rope.

[0014] Optionally, the aquaculture cage includes multiple anchor rods and a bottom net, the multiple anchor rods are arranged at intervals along the circumference of the pile foundation, the bottom net is connected between the pile foundation and the anchor rods, one end of the flexible rope is connected to the buoyancy cage, and the other end is connected to the bottom net.

[0015] Through the above technical solution, in the protective device for offshore wind power foundation provided by the present disclosure, a buoyancy cage is provided in the aquaculture cage, and the pile column passes through the buoyancy cage. The aquaculture cage and the buoyancy cage can form a double buffer zone consisting of a first buffer zone and a second buffer zone on the side of the pile column. The water flow first needs to pass through the aquaculture cage and then through the buoyancy cage before it can cause an impact on the pile column, thereby reducing the kinetic energy of the water flow and providing a certain degree of protection for the pile column. In addition, when the protective device for offshore wind power foundation provided by the present disclosure is in use, since the water flow does not all flow in a direction perpendicular to the pile column, and the buoyancy cage can move axially along the pile column, part of the impact force of the water flow can be converted into a thrust for the buoyancy cage to move axially along the pile column, and the movement of the buoyancy cage on the pile column is offset by the resistance in the water, further reducing the impact of the water flow on the pile column, and at the same time, it can also reduce the impact force between the buoyancy cage and the pile column, avoiding secondary impact on the pile column, and further improving the protection effect on the pile column.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 is a schematic structural diagram of a protective device provided by an embodiment of the present disclosure;

[0019] Figure 2 is a schematic structural diagram of a buoyancy cage provided by an embodiment of the present disclosure;

[0020] Figure 3 A schematic structural diagram of a connector provided in an embodiment of the present disclosure;

[0021] Figure 4 Schematic diagram of part of the structure of the protective device provided by an embodiment of the present disclosure.

[0022] Description of Reference Numerals

[0023] 1-buoyancy cage; 11-main body; 111-first mesh; 112-second mesh; 113-inner mesh; 12-connector; 121-connecting plate; 122-rolling shaft; 123-through hole; 124-connecting hole; 13-second buffer space; 131-breeding area; 132-transition area; 14-foam part; 2-breeding cage; 21-anchor rod; 22-bottom net; 23-first buffer space; 3-flexible rope; 41-pile column; 42-pile foundation. DETAILED DESCRIPTION

[0024] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0025] In this disclosure, unless otherwise indicated, directional terms such as "inside" and "outside" generally refer to the "inside" and "outside" relative to the corresponding component's own outline. Terms such as "first" and "second" used in this disclosure are intended to distinguish one element from another and do not have a sequential or importance relationship. In addition, in the following description, when referring to the drawings, unless otherwise indicated, the same reference numerals in different drawings represent the same or similar elements. The above definitions are used only to explain and illustrate this disclosure and should not be construed as limiting this disclosure.

[0026] According to the specific embodiments provided by this disclosure, Figures 1 to 4As shown in the figure, a protective device for an offshore wind power foundation is provided, the wind power foundation includes a pile 41, the protective device includes a buoyancy cage 1 and a breeding cage 2, the breeding cage 2 has a first buffer space 23, the buoyancy cage 1 is accommodated in the first buffer space 23 and has a second buffer space 13, the pile 41 passes through the buoyancy cage 1, and the buoyancy cage 1 can move along the axial direction of the pile 41.

[0027] Through the above technical solution, in the protective device for offshore wind power foundation provided by the present disclosure, a buoyancy cage 1 is arranged in the aquaculture cage 2, and the pile 41 passes through the buoyancy cage 1. The aquaculture cage 2 and the buoyancy cage 1 can form a double-layer buffer zone consisting of a first buffer space 23 and a second buffer space 13 on the surrounding side of the pile 41. The water flow first needs to pass through the aquaculture cage 2 and then through the buoyancy cage 1 before it can cause an impact on the pile 41, thereby reducing the kinetic energy of the water flow and providing a certain protection effect for the pile 41. In addition, when the protective device for offshore wind power foundation provided by the present invention is in use, since the water flow does not all flow in a direction perpendicular to the pile column 41, and the buoyancy cage 1 can move axially along the pile column 41, part of the impact force of the water flow can be converted into thrust for the buoyancy cage 1 to move axially along the pile column 41, and the movement of the buoyancy cage 1 on the pile column 41 and the resistance in the water are offset, thereby further reducing the impact of the water flow on the pile column 41. At the same time, it can also reduce the impact force between the buoyancy cage 1 and the pile column 41, avoid causing secondary impact on the pile column 41, and further improve the protective effect on the pile column 41.

[0028] In the protective device for offshore wind power foundation provided by the present disclosure, the buoyancy cage 1 can be connected to the pile 41 by sliding in any suitable manner, and the present disclosure does not impose any specific restrictions on this. As an exemplary embodiment, refer to Figure 2As shown in , the buoyancy cage 1 may include a body 11 and at least one connector 12. The connector 12 can be slidably mounted on the outside of the pile 41 and can rotate along the circumference of the pile 41. The body 11 is connected to the connector 12. In this way, when the body 11 is impacted by the water flow, it can not only drive the connector 12 to slide along the axial direction of the pile 41, but also drive the connector 12 to rotate along the circumference of the pile 41. As a result, the impact force of the water flow can be converted into a thrust that drives the buoyancy cage 1 to slide along the axial direction of the pile 41 and a thrust that rotates along the circumference of the pile 41. Ultimately, the movement of the buoyancy cage 1 offsets the resistance in the water, thereby achieving the purpose of reducing the impact force of the water flow on the pile 41. In the protective device for offshore wind power foundations provided by the present disclosure, the connector 12 can be constructed in any suitable form, and the present disclosure does not impose any specific restrictions on this. As an exemplary embodiment, the connector 12 may include a connecting plate 121 and multiple rolling shafts 122. The rolling shafts 122 are rotatably mounted on the connecting plate 121 and in contact with the pile 41. The connecting plate 121 may include a through hole 123 for the pile 41 to pass through. The multiple rolling shafts 122 may be spaced apart along the circumference of the pile 41, with the axial directions of the rolling shafts 122 extending along the axial direction of the pile 41. The contact between the rolling shafts 122 and the pile 41 enables the connector 12 to clean the surface of the pile 41 as it moves along the pile 41. Furthermore, if water impact causes the buoyant cage 1 to rotate axially along the pile 41, the rolling shafts 122 can convert sliding friction between the connector 12 and the pile 41 into rolling friction, further preventing the buoyant cage 1 from impacting the pile 41. In the embodiments provided herein, the surface of the rolling shaft 122 may also be provided with multiple protrusions to further reduce friction with the surface of the pile 41, though this disclosure is not particularly limited to this.

[0029] The connection plate 121 can be connected to the buoyancy cage 1 in any suitable manner, and the present disclosure does not impose any specific restrictions on this. Figure 3 As shown in the figure, a plurality of connection holes 124 for connecting the main body 11 can be opened on the connection plate 121. This is because the buoyancy cage 1 is usually composed of a bracket and a net covering the bracket, so as to increase the buffering capacity as much as possible while ensuring its own strength. The setting of the connection holes 124 can facilitate the connection between the bracket and the connector 12. The end of the bracket can be connected to the connector 12 by fasteners or bending and winding, thereby finally realizing the connection between the buoyancy cage 1 and the connector 12.

[0030] The connector 12 can be constructed of any suitable material. For example, the connector 12 can be made of a polymer material, such as a rubber material. In this way, on the one hand, the rubber material itself has a certain cushioning capacity. On the other hand, the rubber material is weaker than the pile 41, which can prevent damage to the pile 41 under the impact of water flow. In other embodiments, the connector 12 can also be constructed of plastic or foam 14, etc., which is not specifically limited by this disclosure.

[0031] In the protective device for offshore wind power foundation provided by the present disclosure, the number of connectors 12 can be any suitable number, and the present disclosure does not impose any specific limitation on this. As an exemplary embodiment, refer to Figure 2 As shown in , the number of connectors 12 can be two, and the two connectors 12 can be arranged at intervals along the axial direction of the pile 41. The body 11 can include a first mesh 111 and a second mesh 112 arranged opposite to each other. The first mesh 111 and the second mesh 112 can be connected to the two connectors 12 respectively, wherein the distance between the first mesh 111 and the second mesh 112 can gradually decrease away from the pile 41 in a direction perpendicular to the pile 41. Since the connector 12 is sleeved on the outside of the pile 41 and contacts the pile 41, the connected first mesh 111 and the second mesh 112 can form a relatively isolated second buffer space 13 on the circumference of the pile 41 to protect the pile 41. The provision of the two connectors 12 can provide more possibilities for the shape design of the buoyancy cage 1 while ensuring the reliability of the movement of the first mesh 111 and the second mesh 112 relative to the pile 41. In addition, the diameters of the first mesh 111 and the second mesh 112 gradually increase in the direction toward each other, so that the buoyancy cage 1 can be formed with two upper and lower inclined surfaces, which can change the impact direction of the water flow when the water flows toward the buoyancy cage 1, thereby consuming the kinetic energy of the water flow and providing further protection for the offshore wind power foundation.

[0032] In some other embodiments, the number of connecting members 12 may also be one. In this embodiment, the connecting member 12 may include two connecting plates 121, and the first mesh 111 and the second mesh 112 of the main body 11 may be respectively connected to the two connecting plates 121. The present disclosure does not impose any specific restrictions on this.

[0033] In the protection device for offshore wind power foundation provided by the present disclosure, as an exemplary embodiment, reference is made to Figure 2As shown in , an inner net 113 is provided in the second buffer space 13 and is arranged along the circumference of the pile column 41. The two ends of the inner net 113 are respectively connected to the first mesh sheet 111 and the second mesh sheet 112, so as to separate the second buffer space 13 into a breeding area 131 and a transition area 132. The pile column 41 is passed through the transition area 132. Among them, the setting of the inner net 113 can, on the one hand, further reduce the kinetic energy of the water flow and provide protection for the wind power foundation. On the other hand, the inner net 113 separates the second buffer space 13 into the breeding area 131 and the transition area 132. By breeding fish, crustaceans and other seafood in the breeding area 131 without affecting the wind power foundation, the functional diversification of the buoyancy cage 1 can be achieved, thereby improving the development and utilization of marine resources. In the embodiment provided by the present disclosure, the reliability of the structure of the buoyancy cage 1 can also be improved by controlling the size of the inner net 113. Specifically, the inner net 113 is vertically ( Figure 2 The dimension in the vertical direction of the middle figure can be smaller than the distance between the first mesh 111 and the second mesh 112. In this way, the mesh of the first mesh 111 and the second mesh 112 can be tightened so that the first mesh 111 and the second mesh 112 maintain the expected inclination angle, thereby changing the direction of the water flow.

[0034] In the protection device for offshore wind power foundation provided by the present disclosure, as an exemplary embodiment, reference is made to Figure 2 As shown in the figure, the buoyancy cage 1 can also include a plurality of foam pieces 14, which are radially arranged on the first mesh 111 and / or the second mesh 112 with the pile 41 as the center. On the one hand, the buoyancy of the buoyancy cage 1 can be controlled by controlling the number and size of the foam pieces 14. On the other hand, the buoyancy of the mesh at different positions on the main body 11 can be controlled by controlling the position of the foam pieces 14, which can also facilitate the first mesh 111 and the second mesh 112 to maintain the expected inclination angle.

[0035] The present disclosure also provides a protective device for offshore wind power foundation, as an exemplary embodiment, referring to Figure 1 and Figure 4 As shown in FIG, the wind turbine foundation includes a pile foundation 42, and the aquaculture cage 2 is arranged around the pile foundation 42 to form a first buffer space 23. The buoyancy cage 1 is connected to the aquaculture cage 2 via a flexible rope 3. The arrangement of the aquaculture cage 2 can provide further protection for the wind turbine foundation. Moreover, since the impact of water flow on the wind turbine foundation varies at different heights from the seabed, the buoyancy cage 1 connected to the aquaculture cage 2 via the flexible rope 3 can limit the buoyancy cage 1 to float at an appropriate height according to the position of the aquaculture cage 2, thereby achieving the best possible protection for the wind turbine foundation. In addition, the first buffer space 23 of the aquaculture cage 2 can also be used to culture seafood such as fish and crustaceans, thereby further improving the development and utilization of marine resources by the protective device.

[0036] The present disclosure also provides a protective device for offshore wind power foundation, in which the aquaculture cage 2 can be constructed in any suitable form, and the present disclosure does not impose any specific restrictions on this. As an exemplary embodiment, refer to Figure 1 As shown in , the aquaculture cage 2 may include a plurality of anchor rods 21 and a bottom net 22. The plurality of anchor rods 21 are arranged at intervals along the circumference of the pile foundation 42. The bottom net 22 may be connected between the pile foundation 42 and the anchor rods 21. One end of the flexible rope 3 may be connected to the buoyancy cage 1, and the other end may be connected to the bottom net 22. The provision of the anchor rods 21 can improve the reliability of the protective device, preventing the aquaculture cage 2 from being damaged or overturned during long-term use. The buoyancy cage 1 is connected to the bottom net 22 via the flexible rope 3, so that the bottom net 22 can be pulled by the flexible rope 3 during movement, thereby cleaning the bottom net 22 from attachments.

[0037] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0039] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A protective device for offshore wind power foundation, characterized in that: The wind power foundation includes piles, the protective device includes a buoyancy cage and a breeding cage, the breeding cage has a first buffer space, the buoyancy cage is accommodated in the first buffer space and has a second buffer space, the pile passes through the buoyancy cage, and the buoyancy cage can move along the axial direction of the pile.

2. The protective device for offshore wind power foundation according to claim 1, characterized in that: The buoyancy cage includes a body and at least one connecting piece. The connecting piece is slidably sleeved on the outside of the pile and can rotate along the circumference of the pile. The body is connected to the connecting piece.

3. The protective device for offshore wind power foundation according to claim 2, characterized in that: The connecting member includes a connecting plate and multiple rolling shafts, the rolling shafts are rotatably mounted on the connecting plate and in contact with the pile, the connecting plate is provided with a through hole for the pile to pass through, the multiple rolling shafts are arranged at intervals along the circumference of the pile, and the axial direction of the rolling shafts extends along the axial direction of the pile.

4. The protective device for offshore wind power foundation according to claim 3, characterized in that: The connecting plate is provided with a plurality of connecting holes for connecting the main body.

5. The protective device for offshore wind power foundation according to claim 2, characterized in that: The connecting piece is made of polymer material.

6. The protective device for offshore wind power foundation according to claim 2, characterized in that: There are two connecting members, and the two connecting members are arranged at intervals along the axial direction of the pile. The main body includes a first mesh and a second mesh arranged opposite to each other, and the first mesh and the second mesh are respectively connected to the two connecting members, wherein the distance between the first mesh and the second mesh gradually decreases away from the pile in a direction perpendicular to the pile.

7. The protective device for offshore wind power foundation according to claim 6, characterized in that: An inner net is provided in the first buffer space and is arranged along the circumference of the pile column. The two ends of the inner net are respectively connected to the first mesh sheet and the second mesh sheet to separate the first buffer space into a breeding area and a transition area. The pile column is arranged in the transition area.

8. The protective device for offshore wind power foundation according to claim 6, characterized in that: The buoyancy cage includes a plurality of foam pieces, and the plurality of foam pieces are radially arranged on the first mesh sheet and / or the second mesh sheet with the pile as the center.

9. The protective device for offshore wind power foundation according to any one of claims 1 to 8, characterized in that: The wind power foundation includes a pile foundation, the aquaculture cage is arranged around the pile foundation and forms the first buffer space, and the buoyancy cage is connected to the aquaculture cage through a flexible rope.

10. The protective device for offshore wind power foundation according to claim 9, characterized in that: The aquaculture cage includes multiple anchor rods and a bottom net. The multiple anchor rods are arranged at intervals along the circumference of the pile foundation. The bottom net is connected between the pile foundation and the anchor rods. One end of the flexible rope is connected to the buoyancy cage, and the other end is connected to the bottom net.

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