A submarine cable lifting system

Abstract

The utility model provides a kind of submarine cable lifting system.The submarine cable lifting system includes platform deck, submarine cable protection pipe being installed on platform deck by fixed flange, lifting device being arranged in the side of submarine cable protection pipe, the lifting device includes mobile car body, hoist system being installed on the mobile car body, and driving system for driving the hoist system pitch, steel cable for being connected with submarine cable from submarine cable protection pipe is equipped on the hoist system, and the mobile car body is moved and arranged on the platform deck.The utility model is connected with submarine cable by hoist system integrated on car body, realizes the lifting of submarine cable, and pitch driving system is arranged simultaneously, realizes angle adjustment when submarine cable is lifted;The lifting device is no longer connected with two-layer beam bottom, construction does not need to consider floor height, greatly reduces construction difficulty.

Description

Technical Field

[0001] This utility model relates to the field of offshore wind power technology, and in particular to a submarine cable lifting system. Background Technology

[0002] Offshore wind power is a renewable energy technology that utilizes wind resources in the ocean to generate electricity, and it has developed rapidly worldwide in recent years. With advancements in wind power technology, single-unit capacity is continuously increasing while installation costs are gradually decreasing, significantly improving the economic viability of offshore wind power. In the future, offshore wind power infrastructure is expected to become one of the important pillars of energy transition and play a greater role in coastal areas.

[0003] Offshore wind farms mainly consist of two core modules: wind turbines and offshore substations. The offshore substation, as the heart of offshore wind power, is the core of the project's technology, possessing functions such as power collection, voltage boosting, and transmission. The electricity generated by the wind turbines is fed into the offshore substation via submarine cables, and after voltage boosting and conversion, it is transmitted to the onshore control center via submarine cables. Therefore, the connection between the submarine cables and the offshore substation is a crucial aspect of offshore wind farm construction.

[0004] Currently, submarine cables in offshore substations are connected by steel ropes and lifted by a hoist on the first floor via a lifting ring at the bottom of the second-floor beam (such as a traction and lifting device for a row of submarine cables in an offshore booster station disclosed in patent publication number CN205061439U). Due to the high floor height of the first and second floors of offshore substations, the construction of this lifting device is difficult, requires a large amount of equipment, and results in a long construction period and high costs. Utility Model Content

[0005] The purpose of this utility model is to provide a submarine cable lifting system that reduces construction difficulty, shortens construction period, and saves construction costs.

[0006] The technical solution of this utility model is: a submarine cable lifting system, including a platform deck, a submarine cable protection pipe installed on the platform deck via a fixed flange, and a lifting device located beside the submarine cable protection pipe. The lifting device includes a mobile vehicle body, a winch system installed on the mobile vehicle body, and a drive system for driving the winch system to pitch. The winch system is provided with a steel cable for connecting with the submarine cable passing through the submarine cable protection pipe. The mobile vehicle body is movably located on the platform deck.

[0007] In the above scheme, a ground-mobile lifting device is added, which can be moved directly to the working position on the platform deck via its movable vehicle body. The winch system integrated on the vehicle body is connected to the submarine cable to lift the cable. At the same time, a pitch drive system is set up to adjust the angle of the cable during lifting. The lifting device is no longer connected to the bottom of the second-floor beam, so the construction does not need to consider the floor height, which greatly reduces the construction difficulty. In addition, the lifting device is easy to move to another site and can be reused.

[0008] Preferably, the hoisting system includes a drum, a drive source for driving the drum to rotate, a truss with one end hinged to the moving vehicle body and the other end connected to the drive system, one end of the steel cable rotating around the drum, and the other end of the steel cable extending from the truss.

[0009] Preferably, the mobile vehicle body includes a base plate and a first support, a second support, and a third support mounted on the base plate. The drum is mounted on the first support, one end of the truss is hinged to the second support, and the drive system is mounted on the third support. The drive source is mounted on the base plate.

[0010] Preferably, pulleys are provided at both ends of the truss, and the steel cable passes through the pulleys.

[0011] Preferably, the mobile vehicle body includes a floor, a handrail on one side of the floor, and wheels around the perimeter of the floor, with the hoisting system and drive system located on the floor.

[0012] Preferably, the base plate is provided with lifting lugs around its perimeter.

[0013] Preferably, a protective frame is detachably installed on the fixed flange, the protective frame extends vertically, and the upper end of the protective frame forms a flared opening.

[0014] Preferably, the protective frame includes longitudinal ribs, transverse ribs, and mounting flanges. Multiple longitudinal ribs are spaced apart on the mounting flanges. The lower ends of the multiple longitudinal ribs are connected to the mounting flanges, and the upper ends of the multiple longitudinal ribs are bent in a direction away from each other to form the flared openings. The transverse ribs connect the multiple longitudinal ribs, and the mounting flanges are connected to the fixed flanges.

[0015] Preferably, the transverse reinforcement connected to the upper end of the longitudinal reinforcement is externally fitted with a sleeve.

[0016] Compared with related technologies, the beneficial effects of this utility model are as follows: I. This utility model adds a ground-mobile lifting device, which can be moved directly to the working position on the platform deck via its movable vehicle body. The winch system integrated on the vehicle body is connected to the submarine cable to lift the submarine cable. At the same time, a pitch drive system is set up to adjust the angle of the submarine cable during lifting. This lifting device is no longer connected to the bottom of the second-floor beam, and the construction does not need to consider the floor height, which greatly reduces the construction difficulty. Second, the protective frame of this utility model has a detachable installation structure, and the entire lifting device has a movable structure, which makes it easy to move the movable device to a suitable working position, facilitates the reuse of the protective frame, and increases the applicability of the platform. Third, the mobile vehicle body of this utility model is equipped with lifting lugs, which facilitates the rapid handling, transfer and entry of the lifting device by lifting equipment; Fourth, the funnel-shaped protective frame ensures that the submarine cable is in the optimal angle position during the lifting process, preventing jamming; 5. A sleeve is fitted on the horizontal rib at the upper end of the protective frame. During the lifting of the submarine cable, the sleeve rotates adaptively to reduce friction and protect the submarine cable. 6. Set the drive system to adjust the pitch angle of the winch system to avoid the bending radius of the submarine cable being too small. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of the submarine cable lifting system provided by this utility model; Figure 2 for Figure 1 A structural diagram with the protective frame and lifting device removed. Figure 3 This is a structural diagram of the protective frame; Figure 4 This is a schematic diagram of the lifting device.

[0018] In the attached diagram: 1. Platform deck; 2. Protective frame; 21. Longitudinal rib; 22. Transverse rib; 23. Sleeve; 24. Mounting flange; 3. Lifting device; 31. Moving vehicle body; 311. Base plate; 312. Wheel; 313. Handrail; 314. Lifting lug; 315. First support; 316. Second support; 317. Third support; 32. Hoisting system; 321. Drive source; 322. Drum; 323. Truss; 324. Pulley; 325. Steel cable; 33. Drive system; 4. Fixed flange; 5. Submarine cable protection pipe. Detailed Implementation

[0019] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0020] like Figure 1 , Figure 2 As shown, the submarine cable lifting system provided in this embodiment includes a platform deck 1, a protective frame 2, a lifting device 3, a fixing flange 4, and a submarine cable protection pipe 5.

[0021] The platform deck 1 is provided with a through-hole for submarine cables to pass through. A fixing flange 4 is provided on the upper surface of the through-hole. The submarine cable protection pipe 5 passes through the through-hole and is connected and fixed to the fixing flange 4. The upper end of the submarine cable protection pipe 5 extends above the fixing flange 4.

[0022] like Figure 3 As shown, the protective frame 2 includes longitudinal ribs 21, transverse ribs 22, and mounting flanges 24. Multiple longitudinal ribs 21 are spaced apart on the mounting flange 24, with their lower ends connected to the flange. The upper ends of the longitudinal ribs 21 are bent in opposite directions to form a flared opening. The upper ends and waist portions of the longitudinal ribs 21 are connected by transverse ribs 22. A sleeve 23 is rotatably fitted around the transverse ribs 22 connected to the upper ends of the longitudinal ribs 21. The mounting flange 24 is bolted to the fixed flange 4. The protective frame 2 has a semi-enclosed structure, with the semi-enclosed opening positioned away from the lifting device 3. This ensures effective support during the lifting of the submarine cable while also facilitating the separation of the protective frame 2 from the cable.

[0023] like Figure 1 , Figure 4 As shown, the lifting device 3 is located beside the submarine cable protection pipe 5. The lifting device 3 includes a mobile vehicle body 31, a winch system 32, and a drive system 33.

[0024] The mobile vehicle body 31 includes a base plate 311, wheels 312 disposed around the base plate 311, a handrail 313 connected to the upper surface of one side of the base plate 311, and lifting lugs 314 disposed around the upper surface of the base plate 311. Starting from the handrail 313, a first support 315, a second support 316, and a third support 317 are sequentially connected to the upper surface of the base plate 311.

[0025] The hoisting system 32 includes a drive source 321, a drum 322, a truss 323, a pulley 324, and a steel cable 325. The drive source 321 is a motor, mounted on a base plate 311. The motor shaft of the drive source 321 is connected to the central shaft of the drum 322 via a coupling and a transmission shaft. The central shaft of the drum 322 is rotatably mounted on a first support 315.

[0026] One end of the truss 323 is hinged to the second support 316. A drive system 33 is mounted on the third support 317. The drive system 33 is a hydraulic cylinder, the cylinder of which is fixed to the third support 317, and the telescopic rod is hinged to the truss 323. The truss 323 is pitched by extending and retracting the hydraulic cylinder.

[0027] Both ends of the truss 323 are rotatably mounted with pulleys 324. One end of the steel cable 325 is wound around the drum 322, and the other end of the steel cable 325 passes through two pulleys 324 in sequence before connecting to the submarine cable emerging from the submarine cable protection pipe 5. The drum 322 is driven by a motor to wind up the steel cable 325, thereby lifting the submarine cable.

[0028] When installing submarine cables at the offshore substation, the maintenance vessel and the offshore substation crane transport the protective frame 2 and lifting device 3 to the platform deck 1. The protective frame 2 is then bolted to the outside of the submarine cable protection pipe 5 via its mounting flange 24 and fixing flange 4. The lifting device 3 is then moved to the work area, and the wheels 312 are locked (wheels with self-locking function can be used, or additional tools or structures can be used for locking). The steel wires and cables 325 already connected to the submarine cable are connected. The drive source 321 is activated to lift the submarine cable. During the lifting process, the cable rests on the rolling sleeve 23 to reduce friction and protect the cable. During lifting, the lifting angle of the submarine cable can be adjusted using a hydraulic cylinder to prevent the bending radius of the cable from being too small. After the submarine cable is lifted, it is secured.

[0029] After the submarine cable is lifted, the steel wires and cables 325 on the submarine cable are loosened, and the wheels 312 are released from their locks. The protective frame 2 is disassembled, and it is detached from the submarine cable through its opening. The protective frame 2 and the lifting device 3 are then transferred to the maintenance vessel by the offshore substation platform crane to complete the disassembly work.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A submarine cable lifting system, comprising a platform deck (1) and a submarine cable protection pipe (5) installed on the platform deck (1) via a fixing flange (4), characterized in that, It also includes a lifting device (3) located beside the submarine cable protection pipe (5). The lifting device (3) includes a mobile vehicle body (31), a winch system (32) installed on the mobile vehicle body (31), and a drive system (33) for driving the winch system (32) to pitch. The winch system (32) is provided with a steel cable (325) for connecting with the submarine cable passing through the submarine cable protection pipe (5). The mobile vehicle body (31) is movably located on the platform deck (1).

2. The submarine cable lifting system according to claim 1, characterized in that, The hoisting system (32) includes a drum (322), a drive source (321) for driving the drum (322) to rotate, and a truss (323) with one end hinged to the moving vehicle body (31) and the other end connected to the drive system (33). One end of the steel cable (325) is wound around the drum (322), and the other end of the steel cable (325) extends out from the truss (323).

3. The submarine cable lifting system according to claim 2, characterized in that, The mobile vehicle body (31) includes a base plate (311) and a first support (315), a second support (316) and a third support (317) mounted on the base plate (311). The drum (322) is mounted on the first support (315). One end of the truss (323) is hinged to the second support (316). The drive system (33) is mounted on the third support (317). The drive source (321) is mounted on the base plate (311).

4. The submarine cable lifting system according to claim 2, characterized in that, The truss (323) is provided with pulleys (324) at both ends, and the steel cable (325) is threaded through the pulleys (324).

5. The submarine cable lifting system according to claim 1, characterized in that, The mobile vehicle body (31) includes a base plate (311), a handrail (313) on one side of the base plate (311), and wheels (312) around the base plate (311). The hoisting system (32) and the drive system (33) are located on the base plate (311).

6. The submarine cable lifting system according to claim 3 or 5, characterized in that, The base plate (311) is provided with lifting lugs (314) around its perimeter.

7. The submarine cable lifting system according to claim 1, characterized in that, A protective frame (2) is detachably installed on the fixed flange (4). The protective frame (2) extends vertically and has a flared opening at its upper end.

8. The submarine cable lifting system according to claim 7, characterized in that, The protective frame (2) includes longitudinal ribs (21), transverse ribs (22) and mounting flange (24). The longitudinal ribs (21) are arranged at intervals on the mounting flange (24). The lower ends of the longitudinal ribs (21) are connected to the mounting flange (24). The upper ends of the longitudinal ribs (21) are bent in a direction away from each other to form the flared mouth. The transverse ribs (22) connect the longitudinal ribs (21). The mounting flange (24) is connected to the fixed flange (4).

9. The submarine cable lifting system according to claim 8, characterized in that, The transverse reinforcement (22) connected to the upper end of the longitudinal reinforcement (21) is externally fitted with a sleeve (23).

Images