Offshore wind power single pile foundation protection device and offshore wind power pile system

Abstract

The embodiment of the present disclosure provides a protection device of a single pile foundation of an offshore wind power and an offshore wind power pile system, and the protection device comprises: a first fixing assembly, the first fixing assembly is in a ring shape, and an inner ring of the ring shape is used for connecting the single pile foundation; a supporting assembly, the supporting assembly is arranged along the circumference of the first fixing assembly, and the bottom of part of the supporting assembly is used for extending into the seabed; and a first connecting assembly, the first connecting assembly connects the first fixing assembly and the supporting assembly. By arranging the supporting assembly along the circumference of the first fixing assembly of the ring shape, the supporting assembly of the protection device is arranged along the circumference of the single pile foundation, so that the single pile foundation is protected from the circumference of the single pile foundation, the stability of the single pile foundation is improved, the single pile foundation is prevented from being impacted by wind of a sailing ship and a wind power operation and maintenance ship, and failure of offshore wind power equipment caused by instability of the single pile foundation is avoided. In addition, the protection device is assembled, is easy to connect, and is convenient to replace after being impacted.

Description

Technical Field

[0001] The embodiments disclosed herein belong to the field of offshore wind power equipment technology, specifically relating to a protective device for offshore wind power monopile foundations and an offshore wind power pile system. Background Technology

[0002] As a clean energy source, wind power technology has experienced rapid development and is gradually expanding from land to the ocean, where wind resources are even more abundant. In offshore wind power foundation structures, monopile foundations are currently the mainstream foundation type due to their simple construction and ease of installation. However, offshore wind power development generally faces the problem of sites and shipping routes sharing the same sea area. Navigating vessels and wind power operation and maintenance vessels may collide with monopile foundations, affecting their stability and potentially leading to malfunctions of offshore wind power equipment. Therefore, there is an urgent need for a collision protection device for monopile foundations. Summary of the Invention

[0003] The embodiments disclosed herein are intended to at least address one of the technical problems existing in the prior art, and to provide a protective device for offshore wind power monopile foundations.

[0004] The embodiments of this disclosure provide a protective device for an offshore wind turbine monopile foundation, the protective device comprising:

[0005] The first fixing component is a ring structure, and the inner ring of the ring structure is used to connect a single pile foundation.

[0006] A support assembly is provided circumferentially along the first fixing assembly, and a portion of the bottom of the support assembly is used to extend into the seabed;

[0007] A first connecting component connects the first fixing component and the supporting component.

[0008] In some embodiments of this disclosure, the first fixing component includes:

[0009] A first annular fixing plate, the inner ring of which is used for fixed connection to the monopile foundation, and the outer ring of which is connected to the first connecting component;

[0010] The second annular fixing plate has an inner ring for fixing the monopile foundation, and an outer ring for connecting the first connecting component. The second annular fixing plate and the first annular fixing plate are concentric and spaced apart.

[0011] The first shear plate is disposed between the first annular fixing plate and the second annular fixing plate. The first shear plate is connected to the first connecting assembly and is used for fixed connection with the monopile foundation.

[0012] In some embodiments of this disclosure, the first connecting component includes a plurality of first connectors, which are spaced apart and evenly arranged along the circumference of the first fixing component, and the two ends of the first connectors are respectively connected to the first fixing component and the supporting component.

[0013] In some embodiments of this disclosure, the first connecting member includes a first side plate with a first flange, a second side plate with a second flange, and a first connecting plate with a web. The first side plate with the first flange and the second side plate with the second flange are opposite to each other and spaced apart. The web of the first connecting plate is connected between the first side plate with the first flange and the second side plate with the second flange. The first side plate with the first flange is connected to the first annular fixing plate, the second side plate with the second flange is connected to the second annular fixing plate, and the web of the first connecting plate is connected to the first fixed web shear plate.

[0014] In some embodiments of this disclosure, the support assembly includes at least three support members, which are spaced apart and evenly arranged circumferentially along the first fixing assembly. The extension direction of the support members is the same as the extension direction of the monopile foundation, and some of the support members are used to extend into the seabed.

[0015] In some embodiments of this disclosure, the support member includes a support rod portion and a support tip portion. The extension direction of the support rod portion is the same as the extension direction of the monopile foundation. The support tip portion is located at one end of the support rod portion and has a conical structure. The support tip portion is used to fix the support member to the seabed.

[0016] In some embodiments of this disclosure, the protective device for the offshore wind power monopile foundation further includes: at least three second fixing components, the number of which is the same as that of the support member and they are arranged in a one-to-one correspondence; the second fixing components are ring structures, the inner ring of the second fixing components is fixedly connected to the support member, and the outer ring of the second fixing components is connected to the first connecting component.

[0017] In some embodiments of this disclosure, the second fixing component includes:

[0018] The third annular fixing plate has an inner ring for fixed connection to the support member, and an outer ring for connection to the first connecting assembly.

[0019] The fourth annular fixing plate has an inner ring for fixing the support member, and an outer ring for connecting the first connecting assembly. The fourth annular fixing plate is concentric with the third annular fixing plate and is spaced apart from it.

[0020] The second shear plate is disposed between the third annular fixing plate and the fourth annular fixing plate, and the second shear plate is connected to the support member through the first connecting assembly.

[0021] In some embodiments of this disclosure, the protective device for the offshore wind power monopile foundation further includes: a second connecting assembly, the second connecting assembly including at least three second connectors, the second connectors connecting two adjacent support members.

[0022] An embodiment of the second aspect of this disclosure provides an offshore wind turbine pile system, the offshore wind turbine pile system comprising: a monopile foundation and a protective device for the offshore wind turbine monopile foundation as described in any of the above embodiments, wherein the protective device for the offshore wind turbine monopile foundation is fixedly connected to the monopile foundation.

[0023] This disclosure discloses a protective device for offshore wind turbine monopile foundations and an offshore wind turbine pile system. The protective device includes a first fixing component, a support component, and a first connecting component. The first fixing component is used to fit and fix the monopile foundation. The first fixing component has a ring structure. When the protective device is installed on the monopile foundation, the inner ring of the first fixing component is connected to the outer circumference of the monopile foundation, and the outer ring of the first fixing component is connected to the first connecting component. The first connecting component is connected to the support component, that is, the first fixing component is connected to the support component through the first connecting component. Part of the support component extends into the seabed to provide support for the protective device. By arranging the support component along the circumference of the ring-shaped first fixing component, the support component of the protective device is arranged along the circumference of the monopile foundation, thereby protecting the monopile foundation from the circumference, improving the stability of the monopile foundation, preventing collisions between the monopile foundation and sailing vessels or wind power maintenance vessels, and avoiding failures of offshore wind power equipment caused by the instability of the monopile foundation. Attached Figure Description

[0024] Figure 1 This is a top view of the offshore wind turbine pile system according to the first embodiment of this disclosure;

[0025] Figure 2 for Figure 1 A cross-sectional view along the P1-P1 direction shown;

[0026] Figure 3 for Figure 1 The cross-sectional view along the P2-P2 direction is shown.

[0027] Figure 4 for Figure 2 Enlarged view of part A shown;

[0028] Figure 5 for Figure 2 Enlarged view of section B shown;

[0029] Figure 6 for Figure 3 Enlarged view of section C shown;

[0030] Figure 7 for Figure 5 The cross-sectional view along the P3-P3 direction is shown.

[0031] The labels in the attached diagram are as follows:

[0032] 100. Offshore wind turbine piling system;

[0033] 10. Protective devices for offshore wind turbine monopile foundations;

[0034] 11. First fixing component; 111. First annular fixing plate; 112. Second annular fixing plate; 113. First shear plate;

[0035] 12. First connecting assembly; 121. First connector; 1211. First flange plate; 1212. Second flange plate; 1213. First web plate;

[0036] 13. Support assembly; 131. Support component; 1311. Support rod portion; 1312. Support tip;

[0037] 14. Second fixing component; 141. Third annular fixing plate; 142. Fourth annular fixing plate; 143. Second shear plate;

[0038] 15. Second connecting assembly; 151. Second connecting piece; 1511. Third flange plate; 1512. Fourth flange plate; 1513. Second web plate;

[0039] 16. Climbing ladders;

[0040] 171. First fixing bolt; 172. Second fixing bolt; 173. Third fixing bolt; 174. Fourth fixing bolt; 175. First connecting bolt; 176. Second connecting bolt;

[0041] 20. Single pile foundation. Detailed Implementation

[0042] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0043] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The control method steps, processes, and operations described herein are not construed as requiring them to be performed in a specific order described or illustrated unless the order of execution is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0044] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0045] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0046] like Figures 1 to 7As shown, the embodiments of this disclosure provide a protective device 10 for offshore wind power monopile foundations. The protective device 10 for offshore wind power monopile foundations includes: a first fixing component 11, a support component 13, and a first connecting component 12. The first fixing component 11 has a ring structure, and the inner ring of the ring structure is used to connect the monopile foundation 20. The support component 13 is arranged along the circumference of the first fixing component 11, and part of the bottom of the support component 13 is used to extend into the seabed. The first connecting component 12 connects the first fixing component 11 and the support component 13.

[0047] The protective device 10 for offshore wind power monopile foundations according to this embodiment includes a first fixing component 11, a support component 13, and a first connecting component 12. The first fixing component 11 is used to be sleeved and fixed to the monopile foundation 20. The first fixing component 11 has a ring structure. When the protective device is installed on the monopile foundation 20, the inner ring of the first fixing component 11 is connected to the outer circumference of the monopile foundation 20, and the outer ring of the first fixing component 11 is connected to the first connecting component 12. The first connecting component 12 is connected to the support component 13. That is, the first fixing component 11 is connected to the support component 13 through the first connecting component 12. Part of the support component 13 extends into the seabed to provide support for the protective device. By arranging the support component 13 along the circumference of the first fixing component 11 of the annular structure, the support component 13 of the protective device is arranged along the circumference of the monopile foundation 20 to protect the monopile foundation 20 from the circumference, thereby improving the stability of the monopile foundation 20, preventing collisions between the monopile foundation 20 and the wind from ships or wind power maintenance vessels, and avoiding failures of offshore wind power equipment caused by the instability of the monopile foundation 20.

[0048] In some embodiments of this disclosure, the first fixing component 11 includes: a first annular fixing plate 111, a second annular fixing plate 112, and a first shear plate 113. When the first fixing component 11 is installed on the monopile foundation 20, the inner ring of the first annular fixing plate 111 is fixedly connected to the outer circumference of the monopile foundation 20, and the outer ring of the first annular fixing plate 111 is connected to the first connecting component 12. When the first fixing component 11 is installed on the monopile foundation 20, the inner ring of the second annular fixing plate 112 is fixedly connected to the outer circumference of the monopile foundation 20, and the outer ring of the second annular fixing plate 112 is connected to the first connecting component 12. The second annular fixing plate 112 and the first annular fixing plate 111 are concentric and spaced apart. When the first fixing component 11 is installed on the monopile foundation 20, the first shear plate 113 is fixedly connected to the outer circumference of the monopile foundation 20, and the first shear plate 113 is connected to the first connecting component 12. The first shear plate 113 is disposed between the first annular fixing plate 111 and the second annular fixing plate 112. The first annular fixing plate 111, the second annular fixing plate 112, and the first shear plate 113 of the first fixing component 11 are used to connect the protective device to the outer circumference of the monopile foundation 20, thereby ensuring the reliability of the connection between the protective device and the monopile foundation 20.

[0049] Specifically, the first annular fixing plate 111, the second annular fixing plate 112, and the first shear plate 113 can be connected to the monopile foundation 20 by means of welding, threaded connection, snap-fit ​​connection, etc. In this embodiment, in order to simplify the installation process, it is preferred to weld the first annular fixing plate 111, the second annular fixing plate 112, and the first shear plate 113 to the monopile foundation 20 respectively.

[0050] In some embodiments of this disclosure, the first fixing component 11 includes a plurality of first shear plates 113, which are spaced apart and connected to the outer wall of the monopile foundation 20 along the circumference of the monopile foundation 20, and are respectively connected to a connecting component. When the first connecting component 12 is an annular plate structure, the plurality of first shear plates 113 are spaced apart and uniformly connected along the inner ring of the annular plate structure of the first connecting component 12; when the first connecting component 12 includes a plurality of first connectors 121, the number of first connectors 121 is the same as the number of first shear plates 113, and they are connected one-to-one.

[0051] In some other embodiments of this disclosure, the first shear plate 113 may also be an annular plate structure, which is fixedly connected along the outer circumference of the monopile foundation 20.

[0052] In some embodiments of this disclosure, the first connecting component 12 includes a plurality of first connecting members 121, which are spaced apart and evenly arranged circumferentially along the first fixing component 11. The two ends of each first connecting member 121 are respectively connected to the first fixing component 11 and the support component 13. Specifically, the number of first connecting members 121 is the same as the number of first shear plates 113, and each first connecting member 121 is connected to each first shear plate 113 in a one-to-one correspondence. When the support component 13 is an annular closed structure, the plurality of first connecting members 121 are connected to the inner ring of the annular closed structure circumferentially; when the support component 13 includes a plurality of support members 131, the number of first connecting members 121 is the same as the number of support members 131, and each first connecting member 121 is connected to each support member 131 in a one-to-one correspondence.

[0053] In some embodiments of this disclosure, the first connecting member 121 is an I-beam. The first connecting member 121 includes a first flange plate 1211, a second flange plate 1212, and a first web plate 1213. The first flange plate 1211 and the second flange plate 1212 are opposite to each other and spaced apart. The first web plate 1213 connects to two side plates. The two side plates are respectively connected to a first annular fixing plate 111 and a second annular fixing plate 112. Specifically, the first annular fixing plate 111 is connected to the first flange plate 1211 by a first fixing bolt 171, the second annular fixing plate 112 is connected to the second flange plate 1212 by a second fixing bolt 172, and the first web plate 1213 is connected to the first shear plate 113 by a first connecting bolt 175.

[0054] In some embodiments of this disclosure, the support assembly 13 includes at least three support members 131. These three support members 131 are spaced apart and evenly distributed along the circumference of the first fixing assembly 11. The number of support members 131 is the same as the number of first connecting members 121, and they are connected one-to-one. Specifically, the extension direction of the support members 131 is the same as the extension direction of the monopile foundation 20. Part of the support members 131 is used to extend into the seabed; that is, when the protective device is installed on the monopile foundation 20, a portion of each support member 131 extends into the seabed to provide support for the protective device.

[0055] Furthermore, the support member 131 includes a support rod portion 1311 and a support tip portion 1312, which are connected. The support tip portion 1312 is located at one end of the support rod portion 1311 and has a conical structure. When the protective device is installed on the monopile foundation 20, the support tip portion 1312 extends into the seabed to provide support for the support rod portion 1311. The second fixing component 14 is sleeved on the support rod portion 1311, and each component of the second fixing component 14 is fixedly connected to the outer circumferential wall of the support rod portion 1311.

[0056] In some embodiments of this disclosure, the protective device 10 for offshore wind power monopile foundations further includes: at least three second fixing components 14, the number of which is the same as the number of support members 131 and they are arranged in a one-to-one correspondence, and the number of the second fixing components 14 is the same as the number of the first connecting components 12. The second fixing components 14 have a ring structure, with the inner ring of the second fixing component 14 fixedly connected to the support member 131 and the outer ring of the second fixing component 14 connected to the first connecting component 12. The support member 131 and the corresponding first connecting member 121 are connected through the second fixing components 14 to improve the firmness of the connection between the support member 131 and the first connecting member 121.

[0057] In some embodiments of this disclosure, the second fixing component 14 includes: a third annular fixing plate 141, a fourth annular fixing plate 142, and a second shear plate 143. When the protective device is installed on the monopile foundation 20, the inner ring of the third annular fixing plate 141 is fixedly connected to the support member 131, and the outer ring of the third annular fixing plate 141 is connected to the first flange plate 1211 of the first connecting component 12. When the protective device is installed on the monopile foundation 20, the inner ring of the fourth annular fixing plate 142 is fixedly connected to the support member 131, and the outer ring of the fourth annular fixing plate 142 is connected to the second flange plate 1212 of the first connecting component 12. The fourth annular fixing plate 142 and the third annular fixing plate 141 are concentric and spaced apart. When the protective device is installed on the monopile foundation 20, the second shear plate 143 is disposed between the third annular fixing plate 141 and the fourth annular fixing plate 142, and the second shear plate 143 connects the first web plate 1213 of the first connecting component 12 to the support member 131.

[0058] In some embodiments of this disclosure, the protective device 10 for offshore wind turbine monopile foundations further includes a second connecting assembly 15, which comprises at least three second connectors 151, each second connector 151 connecting two adjacent support members 131. Two adjacent support members 131 are connected via a second connector 151 to improve the robustness of the connection between the support assemblies 131.

[0059] Specifically, the structure of the second connecting member 151 is the same as that of the first connecting member 121. The second connecting member 151 is an I-beam and includes a third flange plate 1511, a fourth flange plate 1512, and a second web plate 1513. The second web plate 1513 connects the third flange plate 1511 and the fourth flange plate 1512. The third flange plate 1511 and the fourth flange plate 1512 are respectively connected to the third annular fixing plate 141 and the fourth annular fixing plate 142. Specifically, the two ends of the third flange plate 1511 are respectively connected to the third annular fixing plates 141 of two adjacent second fixing components 14 by third fixing bolts 173. The two ends of the fourth flange plate 1512 are respectively connected to the fourth annular fixing plates 142 of two adjacent second fixing components 14 by fourth fixing bolts 174. The two ends of the second web plate 1513 are respectively connected to the second shear plates 143 of two adjacent second fixing components 14 by second connecting bolts 176, thereby realizing the connection of two adjacent second fixing components 14.

[0060] In some embodiments of this disclosure, the protective device 10 for offshore wind power monopile foundations further includes a ladder 16 connected to the support assembly 13. Specifically, the ladder 16 is connected to the outer circumference of one of the support rods of the support assembly 13, and the extension direction of the ladder 16 is the same as the extension direction of the support member 131, so that operators can climb to the top of the protective device via the ladder 16 to inspect and maintain the protective device.

[0061] An embodiment of the second aspect of this disclosure provides an offshore wind turbine pile system 100, which includes a monopile foundation 20 and a protective device 10 for the offshore wind turbine monopile foundation as described in any of the above embodiments, wherein the protective device 10 is fixedly connected to the monopile foundation 20.

[0062] The offshore wind turbine pile system 100 of this disclosure includes a monopile foundation 20 and a protective device 10 for the offshore wind turbine monopile foundation. The protective device 10 is sleeved and fixed to the outer circumference of the monopile foundation 20 to protect the monopile foundation 20. Specifically, the protective device 10 for the offshore wind turbine monopile foundation includes a first fixing component 11, a support component 13, and a first connecting component 12. The first fixing component 11 is used to sleeve and fix the monopile foundation 20. The first fixing component 11 has a ring structure. The inner ring of the first fixing component 11 is connected to the outer circumference of the monopile foundation 20, and the outer ring of the first fixing component 11 is connected to the first connecting component 12. The first connecting component 12 is connected to the support component 13. That is, the first fixing component 11 is connected to the support component 13 through the first connecting component 12. Part of the support component 13 extends into the seabed to provide support for the protective device. By arranging the support component 13 along the circumference of the first fixing component 11 of the annular structure, the support component 13 of the protective device is arranged along the circumference of the monopile foundation 20 to protect the monopile foundation 20 from the circumference, thereby improving the stability of the monopile foundation 20, preventing collisions between the monopile foundation 20 and the wind from ships or wind power maintenance vessels, and avoiding failures of offshore wind power equipment caused by the instability of the monopile foundation 20.

[0063] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A protective device for offshore wind turbine monopile foundations, characterized in that, The protective device for the offshore wind turbine monopile foundation includes: The first fixing component is a ring structure, and the inner ring of the ring structure is used to connect a single pile foundation. A support assembly is arranged circumferentially along the first fixing assembly, and a portion of the bottom of the support assembly is used to extend into the seabed; A first connecting component connects the first fixing component and the supporting component.

2. The protective device for offshore wind turbine monopile foundations according to claim 1, characterized in that, The first fixing component includes: A first annular fixing plate, the inner ring of which is used for fixed connection to the single pile foundation, and the outer ring of which is connected to the first connecting component; The second annular fixing plate has an inner ring for fixing the monopile foundation, and an outer ring for connecting the first connecting component. The second annular fixing plate and the first annular fixing plate are concentric and spaced apart. The first shear plate is disposed between the first annular fixing plate and the second annular fixing plate. The first shear plate is connected to the first connecting assembly and is used for fixed connection with the monopile foundation.

3. The protective device for offshore wind turbine monopile foundations according to claim 2, characterized in that, The first connecting component includes a plurality of first connectors, which are spaced apart and evenly arranged along the circumference of the first fixing component. The two ends of the first connectors are respectively connected to the first fixing component and the supporting component.

4. The protective device for offshore wind turbine monopile foundations according to claim 3, characterized in that, The first connecting member includes a first flange plate, a second flange plate, and a first web plate. The first flange plate and the second flange plate are opposite to each other and spaced apart. The first web plate is connected between the first flange plate and the second flange plate. The first flange plate is connected to the first annular fixing plate. The second flange plate is connected to the second annular fixing plate. The first web plate is connected to the first shear plate.

5. The protective device for offshore wind turbine monopile foundations according to claim 1, characterized in that, The support assembly includes at least three support members, which are spaced apart and evenly arranged circumferentially along the first fixing assembly. The extension direction of the support members is the same as that of the monopile foundation, and some of the support members are used to extend into the seabed.

6. The protective device for offshore wind turbine monopile foundations according to claim 5, characterized in that, The support member includes a support rod and a support tip. The extension direction of the support rod is the same as the extension direction of the monopile foundation. The support tip is located at one end of the support rod and has a conical structure. The support tip is used to fix the support to the seabed.

7. The protective device for offshore wind turbine monopile foundations according to claim 5, characterized in that, The protective device for the offshore wind power monopile foundation further includes: at least three second fixing components, the number of which is the same as that of the support member and they are arranged in a one-to-one correspondence. The second fixing component is a ring structure, the inner ring of the second fixing component is fixedly connected to the support member, and the outer ring of the second fixing component is connected to the first connecting component.

8. The protective device for offshore wind turbine monopile foundations according to claim 7, characterized in that, The second fixing component includes: The third annular fixing plate has an inner ring for fixed connection to the support member, and an outer ring for connection to the first connecting assembly. The fourth annular fixing plate has an inner ring for fixing the support member, and an outer ring for connecting the first connecting assembly. The fourth annular fixing plate is concentric with the third annular fixing plate and is spaced apart from it. The second shear plate is disposed between the third annular fixing plate and the fourth annular fixing plate, and the second shear plate is connected to the support member through the first connecting assembly.

9. The protective device for offshore wind turbine monopile foundations according to claim 6, characterized in that, The protective device for the offshore wind turbine monopile foundation further includes: a second connecting assembly, the second connecting assembly comprising at least three second connectors, the second connectors connecting two adjacent support members.

10. An offshore wind turbine piling system, characterized in that, The offshore wind turbine pile system includes: a monopile foundation and a protective device for the offshore wind turbine monopile foundation according to any one of claims 1 to 9, wherein the protective device for the offshore wind turbine monopile foundation is fixedly connected to the monopile foundation.

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