Maintenance device and installation method for fixed wind power submarine cable bending protection system

Abstract

The invention relates to the technical field of submarine cable protection system maintenance, and discloses a fixed wind power submarine cable bending protection system maintenance device which comprises two anti-bending device bodies which are symmetrically arranged up and down. The two anti-bending device main bodies are combined into a cylinder with two open ends, a front end connecting clamp is arranged on the right side of each anti-bending device main body, the front end connecting clamp is composed of semi-conical sleeves which are symmetrically arranged up and down, and sacrificial anode protection parts are fixedly arranged on the inclined surfaces of the upper semi-conical sleeve and the lower semi-conical sleeve in the front end connecting clamp. According to the fixed wind power submarine cable bending protection system maintenance device, the front end connecting clamp and the rear end fastening ribbon are arranged, so that the original submarine cable does not need to be dismantled and re-laid; the rear end fastening ribbon is used for connecting the partially damaged bending limiter, so that the disassembly of the original system is reduced as much as possible; by arranging the flange edges, the lifting lugs and the tenon-and-mortise structures which are convenient to connect, the wind power pile foundation can be conveniently installed by a diver and a workboat beside the wind power pile foundation.

Description

Technical Field

[0001] The present invention relates to the technical field of submarine cable protection system maintenance, and in particular to a maintenance device and an installation method for a fixed wind power submarine cable bending protection system. Background Art

[0002] The submarine cable bending protection system is a vital part of offshore wind farms. It is designed to protect the submarine cable from bending damage during installation, operation and maintenance, thereby ensuring the stable operation of the wind farm.

[0003] The Cable Protection and Repair System (CPRS) is a comprehensive system designed to protect cables from various environmental factors and mechanical stresses and ensure rapid repairs in the event of cable failure. The Cable Protection and Repair System (CPRS) can be deployed in situations where the existing Cable Protection System (CPS) has structural failures that expose the cables, or where the CPS has slipped from the J-tube, exposing the cables.

[0004] However, there are still the following disadvantages: when the bending protection system of the traditional wind power submarine cable is damaged, the submarine cable and the bending protection device need to be replaced together; it also needs to be installed on land or on the deck.

[0005] Therefore, a maintenance device and an installation method for a fixed wind power submarine cable bending protection system are proposed. Summary of the invention

[0006] Technical issues solved In view of the deficiencies in the prior art, the present invention provides a maintenance method which does not require dismantling the original submarine cable and re-laying it, and can install a maintenance device on the basis of the partially damaged bending protection system and the original cable. The method has the ability to avoid dismantling the original submarine cable and re-laying it, and provides a front-end connecting clamp and a rear-end fastening tie, wherein the connecting clamp is used to connect the existing submarine cable; the rear-end fastening tie is used to connect the partially damaged bending limiter, thereby minimizing the disassembly of the original system; and provides flange edges, lifting ears and mortise and tenon structures that are easy to connect, so that divers and construction ships can easily install them next to the wind turbine pile foundation, etc., which solves the problem that after the bending protection system of the traditional wind power submarine cable is damaged, the submarine cable and the bending protection device need to be replaced together; and the traditional wind power submarine cable bending protection system needs to be installed on land or on a deck.

[0007] Technical Solution In order to achieve the above purpose without dismantling the original submarine cable and re-laying; a connection clamp is set at the front end, and a fastening tie is set at the back to strengthen the fixation; the mortise and tenon structure is convenient for underwater installation. The present invention provides the following technical solutions: a maintenance device for a fixed wind power submarine cable bending protection system, including a bending preventer body; The anti-bending device body is provided with two symmetrical upper and lower parts; The two anti-bending device bodies are combined into a cylindrical shape with two ends open, and a front end connecting fixture is arranged on the right side of the anti-bending device body, and the front end connecting fixture is composed of a semi-conical sleeve symmetrically arranged up and down; The upper and lower semi-conical sleeve inclined surfaces in the front end connection fixture are fixedly provided with sacrificial anode protection parts, and the sacrificial anode protection parts are provided to prevent the metal insert from corroding in the seabed environment; A metal insert is provided between the front end connection fixture and the two anti-bending device bodies; The left end faces of the two anti-bending device bodies are symmetrically fixed with rear end fasteners, and the outer sides of the two rear end fasteners are provided with fastening arc grooves. The two groups of fastening arc grooves are set through, and fastening ties are sleeved inside the two groups of fastening arc grooves. Fastening points are also set at the rear end of the anti-bending device body. After the outer circular surface of the protection device and the inner wall surface of the maintenance device are assembled, the submarine cable protection device is further strengthened to fix the submarine cable after being tied with the rear end fastening tie.

[0008] Preferably, flange edges are horizontally fixedly provided on the front and rear sides of the two anti-bending device bodies close to the end surfaces, and the two groups of flange edges are correspondingly arranged.

[0009] Preferably, the flange edges located on the same side are overlapped and fastened together by a mortise and tenon structure, and the outer side surfaces of the left ends of the two groups of flange edges are fixedly provided with connecting ears, and the flange edges are provided with a support form of connecting ears, so that the maintenance device can be lifted to the maintenance position of the submarine cable protection system.

[0010] Preferably, the right end surfaces of the upper and lower semi-conical sleeves in the front end connecting fixture are symmetrically provided with connecting convex plates, and the connecting convex plates on the corresponding side are connected by bolts.

[0011] Preferably, the upper and lower semi-conical sleeve inclined surfaces in the front end connecting fixture are fixedly provided with mounting ears.

[0012] Preferably, the metal insert comprises two symmetrical semicircular arc plates, and the right end surfaces of the two anti-bending device bodies are provided with matching embedding grooves at the corresponding left ends of the two semicircular arc plates. The two embedding grooves are internally connected, and the right end surfaces of the two semicircular arc plates are respectively fixedly connected to the corresponding side surfaces of the semi-conical sleeves.

[0013] Preferably, the left ends of the two semicircular arc plates extend to the inside of the two embedding grooves, and the outer side surfaces of the two anti-bending device bodies are radially connected to the corresponding embedding grooves and semicircular arc plates in sequence, and a connecting through hole is provided that is connected to the inside of the anti-bending device body, and the connecting through hole is threadedly connected with two bolts.

[0014] Another technical problem to be solved by the present invention is to provide an installation method for a fixed wind power submarine cable bending protection system maintenance device, comprising the following steps: Step 1: First, remove the damaged part of the original submarine cable protection device and keep the intact protection device; then clean the outer cylindrical surface of the protection device to be assembled with the maintenance device to prepare for subsequent maintenance and installation; Step 2: Use the installation lugs to lift the maintenance device to the maintenance position of the submarine cable protection system; Step 3: After the maintenance device is buckled onto the submarine cable, tighten the bolt 1 on the front connection fixture to fix the split maintenance device to the maintenance position on the submarine cable; Step 4: Insert the retained protection device into the rear end of the maintenance device so that the outer cylindrical surface of the protection device is assembled with the inner wall surface of the maintenance device; and use the rear end fastening tie to fix it; Step 5: Fix the split maintenance device, and tighten the mounting bolts on the flange side while ensuring that the mortise and tenon structure is fully matched to complete the assembly of the submarine cable bending protection system maintenance device.

[0015] Compared with the prior art, the present invention provides a maintenance device and installation method for a fixed wind power submarine cable bending protection system, which has the following beneficial effects: 1. The fixed wind power submarine cable bending protection system maintenance device is provided with a front-end connection clamp and a rear-end fastening tie, wherein the connection clamp is used to connect the existing submarine cable, and has the ability to re-lay the original submarine cable without dismantling it.

[0016] 2. The installation method of the fixed wind power submarine cable bending protection system maintenance device uses a rear-end fastening tie to connect the partially damaged bending limiter, thereby minimizing the disassembly of the original system; by providing a flange edge, a lifting lug and a mortise and tenon structure that are easy to connect, it is convenient for divers and construction ships to install it next to the wind power pile foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a three-dimensional schematic diagram of the local structure of the present invention; Figure 3 It is a three-dimensional exploded schematic diagram of the local structure of the present invention; Figure 4 It is a three-dimensional schematic diagram of the main structure of the anti-bending device of the present invention; Figure 5 It is a schematic diagram of the layout of the maintenance device of the submarine cable bending protection system of the present invention; Figure 6 This is a diagram of the installation process of the submarine cable bending protection system maintenance device of the present invention.

[0018] In the figure: the anti-bending device body 1, the metal insert 2, the front end connecting fixture 3, the mounting ear 4, the sacrificial anode protection part 5, the embedding groove 6, the connecting through hole 7, the flange edge 8, the mortise and tenon structure 9, the connecting ear 10, the rear end fastener 11, the fastening arc groove 12, and the fastening tie 13. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 6 ; A maintenance device for a fixed wind power submarine cable bending protection system, comprising a bending preventer body 1; The anti-bending device body 1 is provided with two symmetrical upper and lower parts; The two anti-bending device bodies 1 are combined into a cylindrical shape with two ends opened. A front connecting fixture 3 is arranged on the right side of the anti-bending device body 1. The front connecting fixture 3 is composed of a semi-conical sleeve symmetrically arranged up and down. The upper and lower semi-conical sleeve inclined surfaces in the front connection fixture 3 are both fixedly provided with sacrificial anode protection parts 5, and the sacrificial anode protection parts 5 are provided to prevent the metal insert 2 from corroding in the seabed environment; A metal insert 2 is provided between the front connection fixture 3 and the two anti-bending device bodies 1; The left end faces of the two anti-bending device bodies 1 are symmetrically fixed with rear end fasteners 11, and the outer sides of the two rear end fasteners 11 are provided with fastening arc grooves 12. Two groups of fastening arc grooves 12 are set through, and fastening ties 13 are sleeved inside the two groups of fastening arc grooves 12. The rear end of the anti-bending device body 1 is also provided with a fastening point. After the outer cylindrical surface of the protection device and the inner wall surface of the maintenance device are assembled, the submarine cable protection device is further strengthened to fix the submarine cable after being tied with the rear end fastening tie 13.

[0021] Flange edges 8 are fixedly arranged horizontally on both sides of the front and rear ends of the two anti-bending device bodies 1, and two sets of flange edges 8 are arranged correspondingly; The flange edges 8 on the same side are overlapped and fastened by the mortise and tenon structure 9. The outer sides of the left ends of the two sets of flange edges 8 are fixedly provided with connecting ears 10. The flange edges 8 are provided with a support form of the connecting ears 10, and the maintenance device can be lifted to the maintenance position of the submarine cable protection system; The right end surfaces of the upper and lower semi-conical sleeves in the front connection fixture 3 are symmetrically provided with connection convex plates, and the connection convex plates on the corresponding sides are connected by bolts 1; The upper and lower semi-conical sleeve inclined surfaces in the front end connecting fixture 3 are both fixedly provided with mounting ears 4; The metal insert 2 includes two symmetrical semicircular arc plates. The right end surfaces of the two anti-bending device bodies 1 correspond to the left ends of the two semicircular arc plates, and matching embedding grooves 6 are provided. The two embedding grooves 6 are connected inside, and the right end surfaces of the two semicircular arc plates are fixedly connected to the corresponding side surfaces of the semiconical sleeves. The left ends of the two semicircular arc plates extend to the inside of the two embedded grooves 6, and the outer side surfaces of the two anti-bending device bodies 1 are sequentially penetrated through the corresponding embedded grooves 6 and the semicircular arc plates along the radial direction of the anti-bending device body 1. The connecting through holes 7 are provided to penetrate the inside of the anti-bending device body 1, and the connecting through holes 7 are internally threadedly connected with bolts 2. By setting the front end connecting clamp 3 and the rear end fastening tie 13, the front end connecting clamp 3 is used to connect the existing submarine cable, and has the ability to not dismantle the original submarine cable and re-lay it; The rear-end fastening tie 13 is used to connect the partially damaged bending limiter, thereby minimizing the disassembly of the original system; by providing a flange edge 8, a lifting lug and a mortise and tenon structure 9 that are easy to connect, it is convenient for divers and construction ships to install it next to the wind turbine pile foundation.

[0022] Another technical problem to be solved by the present invention is to provide an installation method for a fixed wind power submarine cable bending protection system maintenance device, comprising the following steps: Step 1: First, remove the damaged part of the original submarine cable protection device and keep the intact protection device; then clean the outer cylindrical surface of the protection device to be assembled with the maintenance device to prepare for subsequent maintenance and installation; Step 2: Use the installation lug 4 to lift the maintenance device to the maintenance position of the submarine cable protection system; Step 3: After the maintenance device is buckled onto the submarine cable, tighten the bolt 1 on the front connection fixture to fix the split maintenance device to the maintenance position on the submarine cable; Step 4: insert the retained protection device into the rear end of the maintenance device so that the outer cylindrical surface of the protection device is assembled with the inner wall surface of the maintenance device; and use the rear end fastening tie 13 to fix it; Step 5: Fix the split maintenance device, and tighten the mounting bolts on the flange side while ensuring that the mortise and tenon structure 9 is fully matched, to complete the assembly of the maintenance device of the submarine cable bending protection system.

[0023] The beneficial effects of the present invention are as follows: the fixed wind power submarine cable bending protection system maintenance device, by setting a front-end connecting clamp 3 and a rear-end fastening tie 13, wherein the front-end connecting clamp 3 is used to connect the existing submarine cable, and has the ability to re-lay the original submarine cable without dismantling it; the installation method of the fixed wind power submarine cable bending protection system maintenance device, uses the rear-end fastening tie 13 to connect the partially damaged bending limiter, thereby minimizing the disassembly of the original system; by setting a flange edge 8, a lifting lug and a mortise and tenon structure 9 that are easy to connect, it is convenient for divers and construction ships to install it next to the wind power pile foundation.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A maintenance device for a fixed wind power submarine cable bending protection system, comprising a bending preventer body (1); The anti-bending device body (1) is composed of two symmetrically arranged upper and lower parts; The two anti-bending device bodies (1) are combined into a cylindrical shape with openings at both ends, characterized in that: A front end connection fixture (3) is arranged on the right side of the anti-bending device body (1), and the front end connection fixture (3) is composed of a semi-conical sleeve symmetrically arranged up and down; The upper and lower semi-conical sleeve inclined surfaces in the front end connection fixture (3) are both fixedly provided with sacrificial anode protection parts (5); A metal insert (2) is provided between the front end connection clamp (3) and the two anti-bending device bodies (1); The left end surfaces of the two anti-bending device bodies (1) are symmetrically fixed with rear end fasteners (11), and the outer side surfaces of the two rear end fasteners (11) are provided with fastening arc grooves (12). The two groups of fastening arc grooves (12) are arranged through, and fastening tie bands (13) are sleeved inside the two groups of fastening arc grooves (12).

2. A fixed wind power submarine cable bending protection system maintenance device according to claim 1, characterized in that: Flange edges (8) are horizontally fixedly arranged on both the front and rear sides of the two anti-bending device bodies (1) close to each other, and the two groups of flange edges (8) are arranged correspondingly.

3. A fixed wind power submarine cable bending protection system maintenance device according to claim 1, characterized in that: The flange edges (8) located on the same side are overlapped and fastened together via a mortise and tenon structure (9), and the left end outer surfaces of the two groups of flange edges (8) are fixedly provided with connecting ears (10).

4. A fixed wind power submarine cable bending protection system maintenance device according to claim 1, characterized in that: The right end surfaces of the upper and lower semi-conical sleeves in the front end connection clamp (3) are symmetrically provided with connection convex plates, and the connection convex plates on the corresponding sides are connected by bolts.

5. A fixed wind power submarine cable bending protection system maintenance device according to claim 1, characterized in that: The upper and lower semi-conical sleeve inclined surfaces in the front end connection clamp (3) are both fixedly provided with mounting ears (4).

6. A fixed wind power submarine cable bending protection system maintenance device according to claim 1, characterized in that: The metal insert (2) comprises two symmetrical semicircular arc plates, and the right end surfaces of the two anti-bending device bodies (1) are provided with matching embedding grooves (6) at the left ends of the two semicircular arc plates corresponding to each other, and the two embedding grooves (6) are connected inside, and the right end surfaces of the two semicircular arc plates are respectively fixedly connected to the side surfaces of the corresponding semi-conical sleeves.

7. A fixed wind power submarine cable bending protection system maintenance device according to claim 1, characterized in that: The left ends of the two semicircular arc plates extend to the inside of the two embedded grooves (6), and the outer side surfaces of the two anti-bending device bodies (1) are radially connected to the corresponding embedded grooves (6) and the semicircular arc plates in sequence, and are provided with connecting through holes (7) that are connected to the inside of the anti-bending device body (1), and the connecting through holes (7) are internally threadedly connected with two bolts.

8. A method for installing a maintenance device for a fixed wind power submarine cable bending protection system according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: First, remove the damaged part of the original submarine cable protection device and retain the intact protection device; Then clean the outer cylindrical surface of the protection device to be assembled with the maintenance device to prepare for subsequent maintenance and installation; Step 2: Use the installation lifting lug (4) to lift the maintenance device to the maintenance position of the submarine cable protection system; Step 3: After the maintenance device is buckled onto the submarine cable, tighten the bolt 1 on the front connection fixture to fix the split maintenance device to the maintenance position on the submarine cable; Step 4: insert the retained protection device into the rear end of the maintenance device so that the outer circumferential surface of the protection device is assembled with the inner wall surface of the maintenance device; and fix it with the rear end fastening tie (13); Step 5: Fix the split maintenance device, and tighten the mounting bolts on the flange side while ensuring that the mortise and tenon structure (9) is fully matched, to complete the assembly of the maintenance device of the submarine cable bending protection system.

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