Dynamic submarine cable of floating fan

Abstract

A floating fan dynamic submarine cable comprises a floating foundation and a submarine cable body fixed to the bottom of the floating foundation, and the submarine cable body comprises a vertical buffer section and a horizontal buffer section which are arranged in sequence; a bending clamp structure is arranged outside the vertical buffer section and is used for bending the vertical buffer section; and a bending floating structure is arranged outside the horizontal buffer section and is used for bending the horizontal buffer section. According to the invention, the defect of mechanical damage caused by repeated stretching of the dynamic submarine cable can be overcome.

Description

Technical Field

[0001] This utility model belongs to the technical field of submarine cable equipment, and specifically relates to a floating wind turbine dynamic submarine cable. Background Technology

[0002] Because floating wind turbine platforms undergo horizontal and heave movements on the sea surface, the submarine cables at the bottom of the platform are constantly subjected to bending and torsional forces caused by tidal currents and the movement of the floating structure, which can easily cause mechanical damage to various parts.

[0003] Especially in the area where the submarine cable and the wind turbine platform are connected, when the wind turbine platform rises, the connection between the submarine cable and the wind turbine platform is subjected to a large tensile force, which can easily damage the cable or even cause the connection between the submarine cable and the wind turbine platform to break. Utility Model Content

[0004] This invention provides a dynamic submarine cable for floating wind turbines to solve the problem of easy mechanical damage to submarine cables under floating wind turbine platforms.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A floating wind turbine dynamic submarine cable includes a floating foundation and a submarine cable fixed to the bottom of the floating foundation. The submarine cable includes a vertical buffer section and a horizontal buffer section arranged in sequence.

[0007] The vertical buffer section is provided with a bending clamp structure to bend the vertical buffer section; the horizontal buffer section is provided with a bending floating structure to bend the horizontal buffer section.

[0008] Furthermore, the bending clamp structure includes an anchor rod, one end of which is connected to the bottom of the floating foundation, and the other end is connected to the submarine cable; the length of the submarine cable between the fixing point of the anchor rod and the submarine cable and the connection point of the submarine cable and the floating foundation is S1, and the length of the anchor rod is S2, wherein S1 is greater than S2.

[0009] Furthermore, the anchor rod includes a fixed section and an elastic section, with the elastic section located in the middle of the anchor rod.

[0010] Furthermore, a mounting base is fixed at the connection point between the submarine cable and the anchor rod, and a mounting base is also provided at the connection point between the floating foundation and the submarine cable. Both ends of the anchor rod are respectively hinged to the mounting base.

[0011] Furthermore, the mounting base is specifically a base ring, and the two ends of the anchor rod are respectively provided with buckles, which are detachably fastened to the base ring.

[0012] Furthermore, the bending floating structure includes several floating elements arranged along the horizontal buffer section, and the buoyancy of the multiple floating elements is different.

[0013] Furthermore, the horizontal buffer section includes a first section located near the vertical buffer section and a second section located away from the vertical buffer section, with a plurality of floating elements disposed in the second section.

[0014] Furthermore, the buoyancy of the multiple floating components gradually decreases as they move closer to the first section.

[0015] The present invention can achieve the following beneficial effects:

[0016] 1. The submarine cable of this application is provided with a vertical buffer section and a horizontal buffer section around the floating foundation, so that the submarine cable bends around the floating foundation. As a result, when the floating foundation moves and drives the submarine cable to move, there is a buffer margin at the connection between the submarine cable and the floating foundation, which reduces the tensile force at the connection between the submarine cable and the floating foundation, thereby reducing the mechanical damage to the submarine cable.

[0017] 2. Multiple floating components make the horizontal buffer section bend and wave-like in the water, and the bending clamp structure makes the vertical buffer section bend. This allows the horizontal buffer section submarine cable to alleviate the horizontal thrust of the ocean current, and the vertical buffer section to alleviate the pulling force of the floating foundation during lifting and lowering.

[0018] 3. The installation base makes the installation of anchor rods more convenient. Since anchor rods are rigid components, they are easily damaged, which also makes the replacement of anchor rods more convenient. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 A schematic diagram illustrating the effect of dynamic submarine cable installation for floating wind turbines;

[0021] Figure 2 This is a partial schematic diagram illustrating the submarine cable structure surrounding the floating foundation of this utility model;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Floating foundation; 2. Submarine cable; 21. Vertical buffer section; 22. Horizontal buffer section; 221. First section; 222. Second section; 3. Anchor bolt; 31. Fixed section; 32. Flexible section; 33. Clip; 4. Floating component; 5. Base ring;

[0025] 100. Fan; 200. Mooring line. Detailed Implementation

[0026] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0027] like Figures 1 to 3 As shown, a floating wind turbine dynamic submarine cable includes a floating foundation 1 for fixing and installing a wind turbine 100. A mooring line 200 is installed around the floating foundation 1, with its other end anchored to the seabed to maintain the stability of the floating foundation 1. A submarine cable 2 for transmitting signals is fixed to the bottom of the floating foundation 1. The submarine cable 2 includes a vertical buffer section 21 and a horizontal buffer section 22 in sequence, moving away from the floating foundation 1. A bending clamp structure is installed outside the vertical buffer section 21 to bend it; a bending floating structure is installed outside the horizontal buffer section 22 to bend it.

[0028] Specifically, the bending floating structure includes several floating components 4, which are spaced apart along the horizontal buffer section 22, and each floating component 4 has a different buoyancy. The floating components 4 can be foam blocks or other lightweight materials, and are fixed to the outside of the submarine cable 2 by soft ropes. By using the floating components 4 with different buoyancy, the submarine cable 2 can bend and float in the water, so that when the submarine cable 2 is tensioned, there is room for deformation. At the same time, because the horizontal buffer section 22 is bent, when the seawater surges on the seabed, the submarine cable 2 can undulate with the waves, reducing the tensile force.

[0029] In a preferred embodiment, the horizontal buffer section 22 includes a first section 221 located near the vertical buffer section 21 and a second section 222 located away from the vertical buffer section 21. Multiple floating members 4 are only located in the second section 222. Furthermore, the buoyancy of the multiple floating members 4 gradually decreases towards the first section 221. By only placing the floating members 4 in the second section 222, the number of floating members 4 can be reduced while still achieving a curved horizontal buffer section 22, making maintenance easier. According to the above arrangement, the horizontal buffer section 22 bends vertically to form an S-shape, allowing the submarine cable 2 to move better along the seabed waves.

[0030] The bending clamp structure specifically includes an anchor rod 3, with both ends of the anchor rod 3 hinged to the bottom of the floating foundation 1 and the submarine cable 2, respectively. The length of the submarine cable 2 between the anchor rod 3 and the fixing point of the submarine cable 2 and the connection point of the submarine cable 2 and the floating foundation 1 is set as S1, and the length of the anchor rod 3 is set as S2. S1 is greater than S2, thereby causing the section of the vertical buffer section 21 near the floating foundation 1 to bend.

[0031] The anchor rod 3 includes a fixed section 31 and an elastic section 32. The elastic section 32 is located in the middle of the anchor rod 3, allowing for expansion and contraction of the length of the anchor rod 3. The anchor rod 3 can be made of materials such as magnesium alloy, aluminum alloy, and titanium alloy, giving it advantages such as light weight, high rigidity, long service life, and corrosion resistance, thus extending its service life on the seabed.

[0032] In severe sea conditions, the heave of the floating foundation 1 is severe and violent. The anchor rod 3 can bend the section of the submarine cable 2 that is directly connected to the floating foundation 1. When the floating foundation 1 rises, it provides deformation margin and reduces the tensile force at the connection between the submarine cable 2 and the floating foundation 1. At the same time, the elastic section 32 can provide buffering and reduce the impact of the heave of the floating foundation 1.

[0033] It should be noted that the stiffness coefficient of the elastic section 32 needs to be adjusted and set according to the actual situation. The setting principle is: under normal circumstances, the length of the anchor rod 3 remains unchanged, and the anchor rod 3 can stably tie the anchor point of the submarine cable 2; when the floating foundation 1 experiences violent up and down floating and rapidly pulls the submarine cable 2 to move, the elastic section 32 deforms to provide buffering force.

[0034] Furthermore, mounting seats are fixedly installed at the bottom of the floating foundation 1 and on the submarine cable 2, and the two ends of the anchor rod 3 are detachably connected to the mounting seats. In one specific embodiment, the mounting seat is a base ring 5, and the two ends of the anchor rod 3 are respectively provided with buckles 33, which are fastened to the base ring 5, thereby realizing the hinge connection between the two ends of the anchor rod 3; other structures can also be used to achieve quick installation and disassembly of the anchor rod 3 to the floating foundation 1 and the submarine cable 2. Since the anchor rod 3 is made of rigid material, it is easily damaged under the impact of waves and needs to be replaced frequently. By setting up mounting seats, the anchor rod 3 can be installed and disassembled more efficiently, improving the convenience of anchor rod 3 replacement.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A floating wind turbine dynamic submarine cable, characterized in that: It includes a floating foundation (1) and a submarine cable (2) fixed to the bottom of the floating foundation (1). The submarine cable (2) includes a vertical buffer section (21) and a horizontal buffer section (22) arranged in sequence. The vertical buffer section (21) is provided with a bending clamp structure for bending the vertical buffer section (21); the horizontal buffer section (22) is provided with a bending floating structure for bending the horizontal buffer section (22). The bent clamp structure includes an anchor rod (3), one end of which is connected to the bottom of the floating foundation (1), and the other end is connected to the submarine cable (2); the length of the submarine cable (2) between the fixing point of the anchor rod (3) and the submarine cable (2) and the connection point of the submarine cable (2) and the floating foundation (1) is S1, and the length of the anchor rod (3) is S2, wherein S1 is greater than S2; The anchor rod (3) includes a fixed section (31) and an elastic section (32), with the elastic section (32) located in the middle of the anchor rod (3).

2. The floating wind turbine dynamic submarine cable according to claim 1, characterized in that: An installation seat is fixed at the connection point between the submarine cable (2) and the anchor rod (3). An installation seat is also provided at the connection point between the floating foundation (1) and the submarine cable (2). Both ends of the anchor rod (3) are hinged to the installation seat.

3. A floating wind turbine dynamic submarine cable according to claim 2, characterized in that: The mounting base is specifically a base ring (5), and the two ends of the anchor rod (3) are respectively provided with buckles (33), which can be detachably fastened to the base ring (5).

4. The floating wind turbine dynamic submarine cable according to claim 1, characterized in that: The bent floating structure includes a plurality of floating elements (4) arranged along the horizontal buffer section (22), and the buoyancy of the plurality of floating elements (4) is different.

5. A floating wind turbine dynamic submarine cable according to claim 4, characterized in that: The horizontal buffer section (22) includes a first section (221) located near the vertical buffer section (21) and a second section (222) located away from the vertical buffer section (21), with a plurality of floating members (4) located in the second section (222).

6. A floating wind turbine dynamic submarine cable according to claim 5, characterized in that: The buoyancy of the multiple floating elements (4) gradually decreases as they move closer to the first section (221).

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