A partially sunken inner platform for anchoring submarine cables inside a monopile foundation

Abstract

This invention discloses a partially sunken internal platform for anchoring submarine cables within a monopile foundation, comprising a platform slab with an inlet; load-bearing brackets distributed circumferentially along the platform slab; and a beam system fixedly connected between the platform slab and the load-bearing brackets. The beam system includes a sunken cavity located directly below the inlet, and a submarine cable inlet hole communicating with the sunken cavity. This invention can simultaneously meet the operational space requirements for construction personnel and the minimum turning radius requirement for connecting submarine cables to redundant cable trays without adjusting the internal platform elevation.

Description

Technical Field

[0001] This invention relates to the field of monopile foundation internal platform technology, specifically to a partially sunken internal platform for anchoring submarine cables inside a monopile foundation. Background Technology

[0002] In recent years, the development and utilization of offshore wind power resources in my country has approached saturation. Deep-sea areas offer a wider range of exploitable resources, richer wind energy, and better wind speed and frequency, leading the offshore wind power industry to gradually move towards these deeper waters. For example... Figure 11 As shown, the water depth in deep-sea areas is relatively high. Considering factors such as structural safety and ease of installation, the submarine cables for wind turbine single-pile foundations are mostly accessed through the pile itself. A hole is made near the mud surface of the steel pipe pile, and the submarine cable enters the interior of the steel pipe pile through this hole after emerging from the mud. The steel pipe pile has an inner platform, also called the foundation inner platform, with a submarine cable access hole (also called a submarine cable entry hole) on the inner platform. The submarine cable passes upward through the submarine cable access hole and is fixed by the anchoring device at this location. It is then laid along the redundant cable tray at the top of the inner platform and subsequently connected to the wind turbine ring main unit.

[0003] In addition to supporting various electrical and monitoring equipment, the inner platform of a wind turbine monopile foundation also serves as a work platform for construction personnel. Standing on the inner platform, construction personnel should be able to install components such as the connecting bolts of the upper flange of the steel pipe pile and the grounding ring. The cover plate of the inner platform is the working surface for construction personnel, and the height of the cover plate from the upper part of the steel pipe pile should generally not exceed 1.5m. Simultaneously, when the submarine cable is fixed to the upper redundant cable tray after being secured by anchoring devices, the minimum turning radius requirement for the submarine cable must be met. However, due to the standardized and uniform design adopted by some wind turbine manufacturers, the positions of the redundant cable tray and ring main unit are relatively fixed and cannot be adjusted upwards. In conventional inner platform designs, the distance between the submarine cable and the redundant cable tray after being secured by anchoring devices is small, failing to meet the minimum turning radius requirement when connecting to the redundant cable tray. Adjusting the installation position of the inner platform downwards would inconvenience construction personnel in installing, inspecting, and maintaining components such as the tower connecting bolts on the inner platform.

[0004] Therefore, how to simultaneously meet the minimum turning radius of the submarine cable and the requirements of the height and position of the inner platform for manual operations has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a partially sunken inner platform for anchoring submarine cables inside a monopile foundation, so as to solve the technical problem that existing inner platforms cannot simultaneously meet the requirements of submarine cable turning radius and manual operation.

[0006] The technical solution adopted in this invention is: a partially sunken inner platform for anchoring submarine cables inside a monopile foundation, comprising:

[0007] Platform board, wherein the platform board is provided with an inlet;

[0008] Load-bearing brackets, wherein multiple load-bearing brackets are distributed along the circumference of the platform plate;

[0009] A beam system structure, wherein the beam system structure is fixedly connected between the platform plate and the load-bearing corbel;

[0010] The beam structure is provided with a sunken cavity located directly below the inlet, and the beam structure is provided with a submarine cable inlet hole that communicates with the sunken cavity.

[0011] Preferably, the platform plate includes a cover plate, a ring plate, and an annular plate. The cover plate is fixedly disposed on the upper part of the beam structure, the ring plate is coaxially disposed on the outer side of the cover plate, and the annular plate is fixedly connected between the cover plate and the ring plate. The plurality of annular plates are evenly distributed along the circumference of the cover plate.

[0012] Preferably, the inner edge of the ring plate is detachably and fixedly connected to the cover plate, the outer edge of the ring plate is detachably and fixedly connected to the ring plate, and a sealing rubber ring is provided between the ring plate, the cover plate, and the ring plate.

[0013] Preferably, a guide plate is fixedly connected to the upper part of the load-bearing bracket, a guide slope is provided on one side of the guide plate, and a positioning plane is provided on the upper part of the guide plate.

[0014] Preferably, the plurality of load-bearing brackets are evenly distributed along the circumference of the platform plate.

[0015] Preferably, the beam system structure includes a constant cross-section beam and a variable cross-section beam that are vertically fixedly connected, and the constant cross-section beam and the variable cross-section beam form a sunken cavity. A sealing plate assembly is fixedly connected to the lower part of the sunken cavity, and the sealing plate assembly has a submarine cable inlet hole.

[0016] Preferably, the lower part of the beam structure is fixedly connected to a seat plate, and the two sides of the seat plate are provided with limiting plates that can cooperate with the load-bearing brackets to form a stop.

[0017] Preferably, the platform plate cover is provided with a guardrail, which is arranged around the entrance.

[0018] The beneficial effects of this invention are:

[0019] This invention adopts a partial substitution method, with an inlet provided on the platform plate and a sunken cavity provided on the beam structure below the inlet. The submarine cable is anchored by an anchoring device installed in the sunken cavity. This not only allows the height of the platform plate to meet the needs of manual operation inside the steel pipe pile, but also allows the submarine cable to meet the turning radius requirements when connected to the redundant cable tray after being fixed by the anchoring device. Attached Figure Description

[0020] Figure 1This is a three-dimensional schematic diagram of the partially sunken inner platform for anchoring submarine cables inside a monopile foundation according to the present invention.

[0021] Figure 2 This is a top view of the partially sunken inner platform for anchoring submarine cables inside a monopile foundation according to the present invention.

[0022] Figure 3 This is a bottom view of the partially sunken inner platform for anchoring submarine cables inside a monopile foundation according to the present invention.

[0023] Figure 4 This is a side view of the partially sunken inner platform for anchoring submarine cables inside a monopile foundation according to the present invention.

[0024] Figure 5 for Figure 2 AA view in the middle;

[0025] Figure 6 for Figure 2 BB view in the middle;

[0026] Figure 7 for Figure 5 A magnified view of a portion of the image;

[0027] Figure 8 This is a three-dimensional schematic diagram of the sunken cavity;

[0028] Figure 9 This is a schematic diagram of the internal structure of the sinking cavity;

[0029] Figure 10 This is a structural diagram of a load-bearing corbel;

[0030] Figure 11 This is a schematic diagram of the internal structure of a steel pipe pile.

[0031] Explanation of the reference numerals in the figure:

[0032] 100. Internal platform;

[0033] 110. Platform board;

[0034] 111. Cover plate; 112. Ring plate; 113. Ring plate; 114. Sealing rubber ring; 115. Inlet / outlet;

[0035] 120. Load-bearing bracket;

[0036] 121. Horizontal plate; 122. Vertical plate; 123. Guide plate; 124. Guide ramp; 125. Positioning plane;

[0037] 130. Beam system structure;

[0038] 131. Beam with constant cross-section; 132. Beam with variable cross-section; 133. Sinking cavity; 134. Submarine cable inlet hole; 135. Limiting plate; 136. Sealing plate; 137. Sealing plate assembly;

[0039] 140. Guardrail;

[0040] 200. Anchoring device;

[0041] 300. Submarine cable;

[0042] 400. Steel pipe piles;

[0043] 500. Redundant cable trays;

[0044] 600, Ring Main Unit;

[0045] 700, Flange. Detailed Implementation

[0046] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0047] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0050] Examples, such as Figures 1-11 As shown, a partially sunken inner platform for anchoring submarine cables inside a monopile foundation is provided. The partially sunken inner platform includes:

[0051] Platform board 110, which has an inlet 115.

[0052] There are multiple load-bearing brackets 120, which are distributed sequentially along the circumference of the platform plate 110. The load-bearing brackets 120 are located below the platform plate 110 and are used for welding and fixing to the inner wall of the steel pipe pile 400.

[0053] A beam structure 130 is fixedly connected between the platform plate 110 and the load-bearing bracket 120, and the beam structure 130 is used to provide vertical support for the platform plate 110.

[0054] The beam structure 130 is provided with a sunken cavity 133, which is located directly below the inlet 115, and the beam structure 130 is provided with a submarine cable inlet hole 134 that communicates with the sunken cavity 133.

[0055] This application adopts a partial substitution method, with an entrance 115 provided on the platform plate 110 and a sunken cavity 133 provided on the beam structure 130 below the entrance 115. The submarine cable 300 is anchored by the anchoring device 200 installed in the sunken cavity 133. This not only allows the height of the platform plate 110 to meet the needs of manual operation inside the steel pipe pile 400, but also allows the submarine cable 300 to meet the turning radius requirements when it is connected to the redundant cable tray after being fixed by the anchoring device 200.

[0056] In one specific embodiment, such as Figure 1 , Figure 2 , Figure 5 , Figure 7 As shown, the platform plate 110 includes a cover plate 111, a ring plate 112, and an annular plate 113. The cover plate 111 is horizontally positioned directly above the beam structure 130 and is fixedly connected to the beam structure 130. The ring plate 112 is annular in shape, with its inner diameter larger than the radial diameter of the cover plate 111 and its outer diameter equal to the inner diameter of the steel pipe pile 400. The ring plate 112 is coaxially positioned outside the cover plate 111 and is fixedly connected to the inner wall of the steel pipe pile 400 by welding. There are multiple annular plates 113, which are connected sequentially along the circumference of the cover plate 111. The inner edge of the annular plate 113 is fixedly connected to the cover plate 111, and the outer circle of the annular plate 113 is fixedly connected to the ring plate 112. In other words, the annular plate 113 is fixedly connected between the cover plate 111 and the ring plate 112.

[0057] This design is based on the fact that the steel pipe piles 400 under the inner platform 100 contain harmful gases. These gases not only endanger the health of construction workers but also corrode the internal equipment of the wind turbine, thereby reducing the reliability of wind turbine operation. In this embodiment, by fixing the cover plate 111 and the ring plate 112 on the inner wall of the steel pipe pile 400 together with the ring plate 113, the interior of the steel pipe pile 400 can be divided into an unconnected upper space and a lower space. This effectively prevents harmful gases from flowing from below the inner platform 100 to the upper part of the inner platform 100, thus avoiding harm to the health of construction workers, preventing corrosion of the internal equipment of the wind turbine, and improving the reliability of wind turbine operation.

[0058] Preferably, the inner diameter of the ring plate 113 is smaller than the radial dimension of the cover plate 111, and the outer diameter of the ring plate 113 is larger than the inner diameter of the ring plate 112, so that the inner edge of the ring plate 113 is above the cover plate 111, and the outer circle of the ring plate 113 is above the ring plate 112; a sealing rubber ring 114 is provided between the inner edge of the ring plate 113 and the cover plate 111, and the inner edge of the ring plate 113 is detachably and fixedly connected to the cover plate 111; a sealing rubber ring 114 is provided between the outer edge of the ring plate 113 and the ring plate 112, and the outer edge of the ring plate 113 is detachably and fixedly connected to the ring plate 112. By elastically filling the gaps between the ring plate 113 and the cover plate 111 and the ring plate 112 through the sealing rubber ring 114, the sealing effect between the ring plate 113 and the cover plate 111 and the ring plate 112 can be improved.

[0059] Preferably, there are eight ring plates 113, and the ring plates 113 are detachably and fixedly connected to the cover plate 111 and the ring plate 112 by screws or bolts.

[0060] In one specific embodiment, such as Figure 1 , Figure 4 , Figure 7 , Figure 10 As shown, a guide plate 123 is fixedly connected to the upper part of the load-bearing bracket 120. The guide plate 123 is arranged in the vertical direction, and a guide slope 124 is provided on the side of the guide plate 123 facing the beam structure 130. The guide slope 124 is used to guide and limit the hoisting of the beam structure 130. A positioning plane 125 that cooperates with the ring plate 112 is provided on the upper part of the guide plate 123. The positioning plane 125 is used to position and support the ring plate 112.

[0061] Specifically, the load-bearing bracket 120 includes a horizontal plate 121 and a vertical plate 122. The two vertical plates 122 are arranged in parallel, and the horizontal plate 121 is vertically fixed to the upper part of the vertical plate 122. There are two guide plates 123, and the bottom ends of the two guide plates 123 are vertically fixed to the horizontal plate 121.

[0062] Preferably, multiple load-bearing brackets 120 are evenly distributed along the circumference of the platform plate 110.

[0063] In one specific embodiment, such as Figure 4 , Figure 5 , Figure 6 , Figure 8 , Figure 9 As shown, the beam system structure 130 includes a uniform cross-section beam 131 and a variable cross-section beam 132 that are vertically fixedly connected, and a sunken cavity 133 is formed between the uniform cross-section beam 131 and the variable cross-section beam 132. A sealing plate assembly 137 is fixedly connected to the lower part of the sunken cavity 133, and a submarine cable inlet hole 134 is provided on the sealing plate assembly 137.

[0064] The sealing plate assembly 137 is made of multiple I-beams and steel plates welded together.

[0065] Preferably, a seat plate 136 is fixedly connected to the lower part of the beam structure 130. Multiple seat plates 136 are distributed circumferentially, and the seat plates 136 correspond one-to-one with the load-bearing brackets 120. Limiting plates 135 are provided on both sides of the seat plate 136 to form a stop with the load-bearing brackets 120.

[0066] In one specific embodiment, such as Figure 1 As shown, the platform plate 110 has a guardrail 140 on the cover plate 111, which is arranged around the entrance 115.

[0067] This setup is because: when using the anchoring device 200 to fix the submarine cable 300, the guardrail 140 can be removed to facilitate the anchoring of the submarine cable 300. After the submarine cable 300 is anchored, the guardrail 140 can be reinstalled to prevent operators from accidentally falling into the sinking cavity 133, thereby ensuring the safety of the operators.

[0068] The working principle of the internal platform in this application is as follows:

[0069] The inner platform in this application is partially sunk at the submarine cable entry point to form an anchoring platform. The anchoring platform has a submarine cable entry hole and an anchoring device to facilitate the connection and fixation of the submarine cable, while meeting the submarine cable turning radius requirements. The height of the inner platform cover plate is no more than 1.5m from the top of the steel pipe pile, which can meet the operation needs of construction personnel.

[0070] Compared with the prior art, this application has at least the following beneficial technical effects:

[0071] This application can simultaneously meet the operational space requirements of construction personnel and the minimum turning radius requirements of redundant cable trays for submarine cable access without adjusting the elevation of the inner platform.

[0072] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A partially sunken inner platform for anchoring submarine cables inside a monopile foundation, characterized in that, include: Platform plate (110), the platform plate (110) is provided with an inlet (115); Load-bearing brackets (120), a plurality of said load-bearing brackets (120) are distributed along the circumferential direction of the platform plate (110); A beam system (130) is fixedly connected between the platform plate (110) and the load-bearing corbel (120); The beam structure (130) is provided with a sunken cavity (133), which is located directly below the inlet (115), and the beam structure (130) is provided with a submarine cable inlet hole (134) that communicates with the sunken cavity (133). The beam system structure (130) includes a constant cross-section beam (131) and a variable cross-section beam (132) that are vertically fixedly connected, and the constant cross-section beam (131) and the variable cross-section beam (132) form a sunken cavity (133). A sealing plate assembly (137) is fixedly connected to the lower part of the sunken cavity (133), and a submarine cable inlet hole (134) is opened on the sealing plate assembly (137).

2. The partially sunken inner platform for anchoring submarine cables inside a monopile foundation according to claim 1, characterized in that, The platform plate (110) includes a cover plate (111), a ring plate (112) and an annular plate (113). The cover plate (111) is fixedly installed on the upper part of the beam structure (130). The ring plate (112) is coaxially installed on the outside of the cover plate (111). The annular plate (113) is fixedly connected between the cover plate (111) and the ring plate (112), and multiple annular plates (113) are evenly distributed along the circumference of the cover plate (111).

3. A partially sunken inner platform for anchoring submarine cables inside a monopile foundation according to claim 2, characterized in that, The inner edge of the ring plate (113) is detachably and fixedly connected to the cover plate (111), and the outer edge of the ring plate (113) is detachably and fixedly connected to the ring plate (112). A sealing rubber ring (114) is provided between the ring plate (113) and the cover plate (111) and the ring plate (112).

4. A partially sunken inner platform for anchoring submarine cables inside a monopile foundation according to claim 1, characterized in that, The upper part of the load-bearing bracket (120) is fixedly connected to a guide plate (123), and a guide slope (124) is provided on one side of the guide plate (123), and a positioning plane (125) is provided on the upper part of the guide plate (123).

5. A partially sunken inner platform for anchoring submarine cables inside a monopile foundation according to claim 4, characterized in that, Multiple load-bearing brackets (120) are evenly distributed along the circumference of the platform plate (110).

6. A partially sunken inner platform for anchoring submarine cables inside a monopile foundation according to claim 1, characterized in that, The lower part of the beam structure (130) is fixedly connected to a seat plate (136), and the two sides of the seat plate (136) are provided with limiting plates (135) that can form a stop with the load-bearing bracket (120).

7. A partially sunken inner platform for anchoring submarine cables inside a monopile foundation according to claim 1, characterized in that, The platform plate (110) has a guardrail (140) on its cover plate (111), and the guardrail (140) is arranged around the entrance (115).

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