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The protection method and structure of the offshore wind farm collector submarine cable after exiting the i/j-shaped pipe

A technology for protecting structures and wind farms, applied in cable installation, ground cable installation, etc., can solve the problems of sandbag ballast fixation is not firm, submarine cables are not protected, construction is inconvenient, etc., to solve the problem of secondary scouring and then repair, Solve the problem of floating without protection and ensure the effect of reliability and safety

Active Publication Date: 2018-01-05
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] Based on this, in view of the above-mentioned problems, the present invention proposes a protection method and structure for the foundation I / J-shaped pipe of the offshore wind farm collector submarine cable, which solves the problem that the submarine cable is suspended in the air without protection, and at the same time solves the problem in the traditional technology. It is inconvenient to use the deep burial method for construction and the problem of secondary digging, the sandbag ballast is not firmly fixed and the problem of secondary digging, and the flexible protection tube solution is expensive.

Method used

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  • The protection method and structure of the offshore wind farm collector submarine cable after exiting the i/j-shaped pipe
  • The protection method and structure of the offshore wind farm collector submarine cable after exiting the i/j-shaped pipe
  • The protection method and structure of the offshore wind farm collector submarine cable after exiting the i/j-shaped pipe

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Embodiment Construction

[0042] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0043] like figure 1 As shown, for the new project of the offshore wind farm under construction or the offshore wind farm project that has been built, the submarine cable 200 arranged on the foundation pile 10 is passed through the I / J-shaped pipe 20, and the submarine cable 200 is connected from the I / J The nozzle 22 of the J-shaped pipe is drawn out and embedded in the seabed, and a scour pit 30 is formed near the foundation pile 10 due to the erosion of the ocean current, which will cause a section of seawater from the nozzle 22 of the I / J-shaped pipe to the buried seabed. The cable 200 is suspended in the air, that is, a suspension section of the submarine cable 210 is generated. like figure 2 As shown, the present invention provides a protective structure for the offshore wind farm power collecting submarine cable after exiting the I / J-shaped p...

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Abstract

The invention discloses a protection method and structure for an I / J-shaped pipe of an offshore wind farm power collection submarine cable outlet foundation. The protection method includes the following steps: S100. According to the suspension situation of the submarine cable, analyze and determine the concrete sealing film bag that needs to be installed The size, number of layers and installation location of the cable; S200, according to the determined information of the concrete sealing film bag that needs to be set, set the concrete sealing film bag at the bottom of the submarine cable; S300, grouting the concrete sealing film bag to realize the sealing fixing and supporting. It solves the problem that the submarine cable is suspended in the air without protection, and at the same time, it also solves the inconvenience of construction using the deep burial method in the traditional technology and the problem of secondary digging, the sandbag ballast is not firmly fixed and the problem of secondary digging, and the problem of expensive flexible protection tube scheme .

Description

technical field [0001] The invention relates to the field of marine engineering, in particular to a protection method and structure for a power-collecting submarine cable of an offshore wind farm in an offshore and intertidal zone after exiting an I / J-shaped pipe. Background technique [0002] Offshore wind power is an important clean energy, because it has the characteristics of high wind speed, stable wind frequency, small shear, rich resources, no land occupation, suitable for large-scale development, etc., and offshore wind power is close to economically developed areas, far away from power load The center is close, the power consumption capacity is strong, and there are no problems such as access and power cuts. In recent years, it has continued to develop on a large scale. [0003] The submarine cable is an important equipment for the network transmission between the wind turbines in the offshore wind farm and the power transmission from the wind farm to the mainland p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G9/02
CPCE02B2017/0095E02B17/027E02B2017/0073
Inventor 刘晋超张力毕明君杨敏冬元国凯何小华马兆荣李聪
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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