Anti-storm cable for ocean wind power

Abstract

The invention relates to the field of submarine cables, and discloses an anti-storm cable for ocean wind power, which comprises a bunched cable, a mounting rack and a fixing assembly, the mounting frame is buried in the seabed and comprises two side plates and a top plate, the top plate is fixedly connected between the two side plates, the longitudinal length of the top plate is smaller than that of the side plates, and the fixing assembly is arranged on the inner side of the mounting frame; the bunched cable is located on the inner side of the fixing assembly. The whole cable is fixed in a segmented mode, the cable is fixed through the fixing assembly and the installation frame, the wind wave resistance of the cable is improved, the influence of wind waves or seabed ocean currents on the cable is reduced, in addition, the cable is erected and suspended, the whole outer surface of the cable can be conveniently maintained and repaired, and when one cable segment is repaired, the cable segment can be repaired conveniently. And the rest part of the cable is still protected by the protective shell, so that the displacement bending amplitude of the cable is further reduced, and the storm resistance of the cable is improved.

Description

Technical Field

[0001] The invention relates to the field of submarine cables, and in particular to a wind and wave resistant cable for marine wind power. Background Art

[0002] Submarine cables are cables wrapped in insulating materials, laid on the seabed, and used for telecommunication transmission. In the field of offshore wind power generation, submarine cables are usually needed to transmit electricity from fixed power stations back to the land power grid. The outer armor layer of submarine cables is usually made of steel wire, which will rust after long-term immersion in seawater, so regular underwater maintenance and repair are required. In order to improve stability, existing submarine cables are usually buried in the seabed, so that only the upper half of the cable remains exposed, making it inconvenient to maintain and repair the lower half of the cable. Summary of the invention

[0003] The present invention aims to solve the technical problem raised in the above-mentioned background technology, and provides a wind and wave resistant cable for marine wind power.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A wind and wave resistant cable for marine wind power generation, comprising a bundled cable, a mounting frame, and a fixing assembly;

[0006] The mounting frame is buried deep in the seabed, and comprises two side plates and a top plate, wherein the top plate is fixedly connected between the two side plates, and the longitudinal length of the top plate is smaller than the longitudinal length of the side plates, and the fixing assembly is arranged inside the mounting frame;

[0007] The bundled cables are located inside the fixing assembly.

[0008] Preferably, the bundled cable comprises an armor layer, a water-blocking layer, a skeleton layer, a filling layer, and a single cable;

[0009] The filling layer is arranged outside the single cable, and the filling layer is polyurethane foam;

[0010] The skeleton layer is arranged outside the filling layer, and the skeleton layer is composed of a plurality of annular copper belts and annular steel belts interlaced;

[0011] The water-blocking layer is arranged outside the skeleton layer, and the water-blocking layer is made of polyester non-woven fibers and polyacrylate expansion powder;

[0012] The armor layer is arranged outside the water-blocking layer, and the armor layer is made of steel wire.

[0013] Preferably, the fixing assembly includes a protective shell, a telescopic sleeve, a rotating rod, a sliding rod, a spring, a limiting groove, and a scraper ring;

[0014] The protective shell is arranged outside the bundled cable, through holes are provided above and below the protective shell, the slide bar is movably connected to the through hole, both ends of the through hole are fixedly connected to scraper rings, the scraper rings are hollow truncated cones, and the inner ring of the scraper ring has the same diameter as the slide bar;

[0015] The slide bar is fixedly connected to the inner side of the mounting frame, the spring is arranged outside the slide bar, and the two ends of the spring are fixedly connected to the mounting frame and the protective shell respectively;

[0016] The telescopic sleeve is arranged outside the spring, and two ends of the telescopic sleeve are respectively connected to the mounting frame and the protective shell;

[0017] A limiting groove is provided on the top of the protective shell, the rotating rod is located inside the limiting groove, both ends of the rotating rod are semicircular, a rotating shaft is fixedly connected to the center of the rotating rod, and the rotating shaft is rotatably connected to the top plate of the mounting frame.

[0018] Preferably, a rotating block is fixedly connected to the top of the rotating rod, and the rotating block is fixedly connected to the top plate of the mounting frame by bolts.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention fixes the entire cable in sections and fixes the cable through fixing components and mounting frames, thereby improving the wind and wave resistance of the cable and reducing the impact of wind and waves or submarine currents on the cable.

[0021] 2. The present invention facilitates maintenance and repair of the entire outer surface of the cable by suspending the cable in the air. When repairing a section of the cable, the rest of the cable is still protected by the protective shell, further reducing the displacement and bending amplitude of the cable, thereby improving the cable's ability to resist wind and waves. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the wind and wave resistant cable for marine wind power;

[0023] Figure 2 This is a schematic diagram of the structure of the installation frame of the wind and wave resistant cable for offshore wind power;

[0024] Figure 3 This is a schematic diagram of the scraper ring structure of the wind and wave resistant cable for offshore wind power.

[0025] Explanation of the reference numerals: 1. Bundled cable; 11. Armor layer; 12. Water-blocking layer; 13. Skeleton layer; 14. Filling layer; 15. Single cable; 2. Mounting frame; 21. Protective shell; 22. Telescopic sleeve; 23. Turning rod; 24. Sliding rod; 25. Spring; 26. Limiting groove; 27. Rotating block; 28. Scraper ring. DETAILED DESCRIPTION

[0026] The concept and technical effects of the present invention will be clearly and completely described below in conjunction with embodiments to fully understand the purpose, features and effects of the present invention.

[0027] This application designs a wind and wave resistant cable for marine wind power, as shown in the attached Figure 1 As shown, it includes a bundled cable 1, a mounting frame 2, and a fixing component;

[0028] The mounting frame 2 is buried in the seabed. The mounting frame 2 includes two side plates and a top plate. The top plate is fixedly connected between the two side plates, and the longitudinal length of the top plate is smaller than the longitudinal length of the side plates, so that there is a gap between two adjacent top plates, which is convenient for maintenance robots and other equipment to contact the cables. The fixing assembly is arranged on the inner side of the mounting frame 2;

[0029] The bundled cables 1 are located inside the fixing assembly.

[0030] The bundled cable 1 comprises an armor layer 11, a water blocking layer 12, a skeleton layer 13, a filling layer 14, and a single cable 15;

[0031] The filling layer 14 is arranged outside the single cable 15. The filling layer 14 is polyurethane foam and is used to fill the gap inside the cable to play a role of protection, support and isolation, and protect the conductor and optical fiber inside the single cable 15 from external mechanical pressure and moisture intrusion;

[0032] The skeleton layer 13 is arranged outside the filling layer 14. The skeleton layer 13 is composed of a plurality of annular copper belts and annular steel belts interlaced to resist the underwater water pressure and prevent the cable from deforming. At the same time, it provides a shielding effect, can shield the electromagnetic field, and prevent electromagnetic interference;

[0033] The water-blocking layer 12 is arranged outside the skeleton layer 13. The water-blocking layer 12 is made of polyester non-woven fibers and polyacrylate expansion powder, and is used to prevent moisture in seawater from invading the interior of the cable.

[0034] The armor layer 11 is arranged outside the water-blocking layer 12. The armor layer 11 is made of steel wire and can provide tensile and compressive protection, and is used to enhance the mechanical strength of the cable so that it can withstand complex seabed terrain and external forces.

[0035] As attached Figure 2-3 As shown, the fixing assembly includes a protective shell 21, a telescopic sleeve 22, a rotating rod 23, a sliding rod 24, a spring 25, a limiting groove 26, and a scraper ring 28;

[0036] The protective shell 21 is arranged outside the bundled cable 1. Through holes are provided above and below the protective shell 21. The slide bar 24 is movably connected to the through hole. Both ends of the through hole are fixedly connected with a scraper ring 28. The scraper ring 28 is in a hollow truncated cone shape. The inner ring of the scraper ring 28 has the same diameter as the slide bar 24. As the protective shell 21 moves, the sediment and other deposits on the surface of the slide bar 24 can be gathered to the middle part of the slide bar 24, which is convenient for cleaning and prevents the protective shell 21 from getting stuck.

[0037] The slide bar 24 is fixedly connected to the inner side of the mounting frame 2, and the spring 25 is arranged outside the slide bar 24, and the two ends of the spring 25 are fixedly connected to the mounting frame 2 and the protective shell 21 respectively;

[0038] The telescopic sleeve 22 is arranged outside the spring 25, and the two ends of the telescopic sleeve 22 are respectively connected to the mounting frame 2 and the protective shell 21. The telescopic sleeve 22 is made of a nickel-based alloy material, which has good corrosion resistance and fatigue resistance. The spring 25 is protected by the telescopic sleeve 22;

[0039] A limiting groove 26 is provided on the top of the protective shell 21 , and the rotating rod 23 is located inside the limiting groove 26 . Both ends of the rotating rod 23 are semicircular. A rotating shaft is fixedly connected to the center of the rotating rod 23 , and the rotating shaft is rotatably connected to the top plate of the mounting frame 2 .

[0040] A rotating block 27 is fixedly connected to the top of the rotating rod 23, and the rotating block 27 is fixedly connected to the top plate of the mounting frame 2 by bolts. Two connecting holes are provided at the bottom of the top plate, and the two connecting holes correspond to the positions of the outer ends of the rotating rod 23 in the horizontal and longitudinal states respectively. The two connecting holes are respectively at right angles to the connecting lines at the axis of the rotating rod 23, corresponding to the states of the protective shell 21 when it is closed and opened respectively. Therefore, the rotating block 27 and the rotating rod 23 can be fixed by bolts and connecting holes to prevent the rotating rod 23 from rotating autonomously.

[0041] Working principle: The cable maintenance equipment removes the bolts on the rotating block 27 and rotates it, so that the rotating rod 23 pushes the two protective shells 21 to unfold, and the protective shells 21 compress the spring 25 and the telescopic tube until the cable is completely exposed. The rotating block 27 is then fixed to the top plate by bolts. At this time, the other fixed components of the fixed cable remain in a fixed state, so one section of the cable can be maintained and repaired separately. At this time, the section of the cable is in a suspended state, so that the maintenance equipment can be moved to the bottom of the cable, which is convenient for maintenance and repair of the lower half of the cable.

[0042] The above embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work all belong to the scope of protection of the present invention.

Claims

1. A wind and wave resistant cable for marine wind power, characterized in that: It comprises a bundled cable (1), a mounting frame (2), and a fixing component; The mounting frame (2) is buried in the seabed, the mounting frame (2) comprises two side plates and a top plate, the top plate is fixedly connected between the two side plates, and the longitudinal length of the top plate is smaller than the longitudinal length of the side plates, and the fixing assembly is arranged on the inner side of the mounting frame (2); The bundled cable (1) is located inside the fixing component.

2. The wind and wave resistant cable for marine wind power according to claim 1, characterized in that: The bundled cable (1) comprises an armor layer (11), a water-blocking layer (12), a skeleton layer (13), a filling layer (14), and a single cable (15); The filling layer (14) is arranged outside the single cable (15), and the filling layer (14) is polyurethane foam; The skeleton layer (13) is arranged outside the filling layer (14), and the skeleton layer (13) is composed of a plurality of annular copper belts and annular steel belts interlaced; The water-blocking layer (12) is arranged outside the skeleton layer (13), and the water-blocking layer (12) is made of polyester non-woven fibers and polyacrylate expansion powder; The armor layer (11) is arranged outside the water-blocking layer (12), and the armor layer (11) is made of steel wire.

3. The wind and wave resistant cable for marine wind power according to claim 2, characterized in that: The fixing assembly comprises a protective shell (21), a telescopic sleeve (22), a rotating rod (23), a sliding rod (24), a spring (25), a limiting groove (26), and a scraper ring (28); The protective shell (21) is arranged outside the bundled cable (1), and through holes are provided above and below the protective shell (21). The slide bar (24) is movably connected to the through hole, and scraper rings (28) are fixedly connected at both ends of the through hole. The scraper ring (28) is in a hollow truncated cone shape, and the inner ring of the scraper ring (28) has the same diameter as the slide bar (24); The slide bar (24) is fixedly connected to the inner side of the mounting frame (2), the spring (25) is arranged outside the slide bar (24), and the two ends of the spring (25) are respectively fixedly connected to the mounting frame (2) and the protective shell (21); The telescopic sleeve (22) is arranged outside the spring (25), and two ends of the telescopic sleeve (22) are respectively connected to the mounting frame (2) and the protective shell (21); A limiting groove (26) is provided on the top of the protective shell (21), the rotating rod (23) is located inside the limiting groove (26), both ends of the rotating rod (23) are semicircular, a rotating shaft is fixedly connected at the center of the rotating rod (23), and the rotating shaft is rotatably connected to the top plate of the mounting frame (2).

4. The wind and wave resistant cable for marine wind power according to claim 3, characterized in that: A rotating block (27) is fixedly connected to the top of the rotating rod (23), and the rotating block (27) is fixedly connected to the top plate of the mounting frame (2) via bolts.

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