A dynamic submarine cable configuration for a floating wind turbine generator set in shallow water areas

Abstract

The present invention discloses a dynamic submarine cable configuration of a floating wind turbine generator set in a shallow water area, comprising a downward extension section, a bottom-lying section, a corrugated submarine cable section and a buried section, wherein the downward extension section and the bottom-lying section are both rigid structures, the upper part of the downward extension section is vertically connected to the foundation of the unit, the lower part thereof falls on the seabed with a set bending radius and is then connected to the bottom-lying section laid flat on the seabed, and the upper part thereof can always maintain a vertical downward state during the vertical movement of the foundation, the corrugated submarine cable section is a flexible structure and is connected to the bottom-lying section, and the corrugated structure constructed by the corrugated submarine cable section can make the submarine cable follow the foundation to perform horizontal extension and follow-up movement, the buried section is connected to the corrugated submarine cable section, and the submarine cable of the buried section is buried below the mud surface, and then transmitted to the booster station in the form of a static cable. The present invention can effectively solve the problem of the difficulty of dynamic submarine cable laying configuration in shallow water areas.

Description

Technical Field

[0001] The invention relates to the technical field of floating wind turbine generator sets, and in particular to a dynamic submarine cable configuration of a floating wind turbine generator set in a shallow water area. Background Art

[0002] In the current laying configuration of dynamic submarine cables in shallow water areas, the design water depth is 30 meters, and the height of the buoy of the semi-submersible floating foundation is superimposed. Under extreme working conditions, the cable exit point is about 5 meters away from the seabed, which means that the dynamic submarine cable needs to move within a range of 5 meters in the vertical direction of space, and at the same time, it needs to move freely in the horizontal direction with the foundation, with a moving radius of about 25 meters. This makes it difficult to linearly construct dynamic submarine cables on the seabed. Based on this, there is an urgent need for a dynamic submarine cable that can meet the problem of submarine cable bending caused by the vertical movement of dynamic submarine cables in the 5-meter space above and below, and solve the problem of submarine cable extension caused by horizontal movement. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a dynamic submarine cable configuration for a floating wind turbine generator set in shallow water areas, which can effectively solve the problem of the difficulty in laying dynamic submarine cables in shallow water areas.

[0004] To achieve the above-mentioned purpose, the technical solution provided by the present invention is: a dynamic submarine cable configuration of a floating wind turbine generator set in shallow water area, comprising a downward extension section, a bottom-lying section, a corrugated submarine cable section and a buried section, wherein the downward extension section and the bottom-lying section are both rigid structures, the upper part of the downward extension section is vertically connected to the foundation of the unit, and the lower part thereof falls to the seabed with a set bending radius and then is connected to the bottom-lying section laid flat on the seabed, the upper part of the downward extension section can always maintain a vertical downward state during the vertical movement of the foundation, the corrugated submarine cable section is a flexible structure, and is connected to the bottom-lying section, and the corrugated structure constructed by the corrugated submarine cable section can make the submarine cable follow the foundation to perform horizontal extension and follow-up movement, the buried section is connected to the corrugated submarine cable section, and the submarine cable of the buried section is buried below the mud surface, and then transmitted to the booster station in the form of a static cable.

[0005] Furthermore, the downstream section includes a submarine cable, a bend-limiting and wear-resistant pipe sleeved on the outside of the submarine cable, and a plurality of gravity blocks arranged at intervals along the length of the downstream section, and the bend-limiting and wear-resistant pipe is used to prevent the submarine cable from being deformed.

[0006] Furthermore, the bottom-lying section includes a submarine cable, a bend-limiting and wear-resistant tube sleeved on the outside of the submarine cable, and a plurality of gravity blocks arranged at intervals along the length of the bottom-lying section, and the bend-limiting and wear-resistant tube prevents the submarine cable from being deformed.

[0007] Furthermore, the corrugated submarine cable section includes a submarine cable and a plurality of buoyancy blocks and gravity blocks arranged at intervals along the length of the submarine cable, and the submarine cable is given an M-shaped corrugated structure by the buoyancy blocks and gravity blocks.

[0008] Furthermore, a curved reinforcement tube is provided at the connection between the bottom-lying section and the corrugated submarine cable section.

[0009] Furthermore, the position of the corrugated submarine cable section close to the buried section is fixed to the seabed by a mooring device to prevent the submarine cable from moving.

[0010] Furthermore, the mooring device comprises a seabed fixing device and a mooring chain, wherein the seabed fixing device is fixed to the seabed, one end of the mooring chain is connected to the seabed fixing device, and the other end is connected to the corrugated submarine cable section.

[0011] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0012] 1. The present invention solves the problem of submarine cable bending caused by the vertical movement of dynamic submarine cables in upper and lower spatial areas by setting a downward extension section and a bottom-lying section. By setting a bending-limiting and anti-wear pipe on the outside of the downward extension section and the bottom-lying section, it can effectively prevent the submarine cable from abrading against the seabed and preventing the submarine cable from colliding with components such as anchor chains. The corrugated submarine cable section with a corrugated structure can make the submarine cable follow the foundation to perform horizontal extension movement, thereby solving the problem of submarine cable extension during the horizontal movement of the unit.

[0013] 2. The dynamic submarine cable configuration of the present invention has good stability, can effectively prevent the submarine cable from falling off and wearing, and improve the safety and reliability of the submarine cable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the dynamic submarine cable configuration of the present invention. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with specific embodiments, but the use of the present invention is not limited thereto.

[0016] like Figure 1 As shown, the dynamic submarine cable configuration of the floating wind turbine generator set in shallow water area described in this embodiment includes a downward extension section 1, a bottom section 2, a corrugated submarine cable section 3 and a buried section 4, wherein the downward extension section 1 and the bottom section 2 are both rigid structures, the upper part 101 of the downward extension section 1 is vertically connected to the foundation of the unit 5, and the lower part 102 thereof falls to the seabed with a certain bending radius and then is connected to the bottom section 2 laid flat on the seabed, and the upper part 101 thereof can always maintain a vertical downward state during the vertical movement of the foundation, the corrugated submarine cable section 3 is a flexible structure, and is connected to the bottom section 2, and the corrugated structure constructed by the corrugated submarine cable section 3 can make the submarine cable follow the foundation to perform horizontal extension and follow-up movement, the buried section 4 is connected to the corrugated submarine cable section 3, and the submarine cable of the buried section 4 is buried below the mud surface by a burying plow, and then transmitted to the booster station in the form of a static cable.

[0017] Specifically, the downward extension section 1 includes a submarine cable (not shown in the figure), a bending-limiting and anti-wear pipe 6 sleeved on the outside of the submarine cable, and a plurality of gravity blocks 7 arranged at intervals along the length of the downward extension section 1. The bottom-lying section 2 includes a submarine cable, a bending-limiting and anti-wear pipe 6 sleeved on the outside of the submarine cable, and a plurality of gravity blocks 7 arranged at intervals along the length of the bottom-lying section 2. The gravity blocks 7 can be arranged on the outside of the bending-limiting and anti-wear pipe 6, and the bending-limiting and anti-wear pipe 6 can prevent the downward extension section 1 and the bottom section 2 from being deformed.

[0018] Specifically, the corrugated submarine cable section 3 includes a submarine cable and a plurality of buoyancy blocks 8 and gravity blocks 11 arranged at intervals along the length of the submarine cable. The buoyancy blocks 8 and gravity blocks 11 make the submarine cable present an M-shaped corrugated structure.

[0019] In order to better connect the rigid bottom-lying section 2 and the flexible corrugated submarine cable section 3, a curved reinforcement tube 12 may be sleeved at the connection to provide a transition between rigidity and flexibility and improve the telescopic performance.

[0020] In order to prevent the movement of the submarine cable of the corrugated submarine cable section 3, the end of the corrugated submarine cable section 3 close to the buried section 4 can be fixed to the seabed through a mooring device. Further, the mooring device includes a seabed fixing device 9 and a mooring chain 10, the seabed fixing device 9 is fixed to the seabed, one end of the mooring chain 10 is connected to the seabed fixing device 9, and the other end is connected to the corrugated submarine cable section 3.

[0021] The dynamic submarine cable configuration of the present invention solves the problem of submarine cable bending caused by the vertical movement of the dynamic submarine cable in the upper and lower 5-meter space area, and solves the problem of submarine cable stretching caused by horizontal movement, making it possible for floating wind turbines to operate in shallow water areas.

[0022] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all changes made according to the shape and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dynamic submarine cable configuration for a floating wind turbine generator set in shallow waters, characterized in that: It includes a downward extension section, a bottom-lying section, a corrugated submarine cable section and a buried section. The downward extension section and the bottom-lying section are both rigid structures. The upper part of the downward extension section is vertically connected to the foundation of the unit, and the lower part falls to the seabed with a set bending radius and then is connected to the bottom-lying section laid flat on the seabed. The upper part can always maintain a vertical downward state during the vertical movement of the foundation. The downward extension section includes a submarine cable, a bend-limiting and anti-wear pipe sleeved on the outside of the submarine cable, and a plurality of gravity blocks arranged at intervals along the length of the downward extension section. The bend-limiting and anti-wear pipe is used to prevent the submarine cable from being deformed. The bottom-lying section includes a submarine cable, a bend-limiting and anti-wear pipe sleeved on the outside of the submarine cable The anti-wear pipe and a plurality of gravity blocks arranged at intervals along the length of the lying bottom section prevent deformation of the submarine cable through the bending-limiting anti-wear pipe. The corrugated submarine cable section is a flexible structure and is connected to the lying bottom section. The corrugated structure constructed by the corrugated submarine cable section can make the submarine cable follow the foundation to perform horizontal extension movement. The corrugated submarine cable section includes a submarine cable and a plurality of buoyancy blocks and gravity blocks arranged at intervals along the length of the coastal cable. The buoyancy blocks and gravity blocks make the submarine cable present an M-shaped corrugated structure. The buried section is connected to the corrugated submarine cable section. The submarine cable of the buried section is buried below the mud surface and then transmitted to the booster station in the form of a static cable.

2. According to claim 1, a dynamic submarine cable configuration of a floating wind turbine generator set in shallow waters, characterized in that: A curved reinforcement tube is sleeved at the connection between the bottom-lying section and the corrugated submarine cable section.

3. According to claim 1, a dynamic submarine cable configuration of a floating wind turbine generator set in shallow waters, characterized in that: The position of the corrugated submarine cable section close to the buried section is fixed to the seabed by a mooring device to prevent the submarine cable from moving.

4. According to claim 3, a dynamic submarine cable configuration of a floating wind turbine generator set in shallow waters is characterized by: The mooring device comprises a seabed fixing device and a mooring chain. The seabed fixing device is fixed to the seabed. One end of the mooring chain is connected to the seabed fixing device, and the other end is connected to the corrugated submarine cable section.

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