Water tight cable for beach

Abstract

The invention discloses a water tight cable for a beach, which comprises a cable core positioned in the middle of the cable, the cable core is formed by hinging a plurality of wire cores, and each wire core is composed of a conductor and a conductor screen layer, an insulating layer, an insulating screen layer, a semi-conductive belting layer and a metal screen layer arranged outside the conductor in sequence; a packing layer is arranged between the cable cores, and a belting layer, a metal armor layer, a water proof inner protecting sleeve and a water proof outer protecting sleeve are arranged outside the cable core in sequence. The cable adopting the structure provided by the invention is provided with better water blocking performance, better corrosion resisting performance, and higher safety performance, and the cable is used for power transporting line in beach area.

Description

[0001] technical field [0002] The invention relates to the field of electric wires and cables, in particular to a waterproof cable for beaches. Background technique [0003] At present, in the wind farms in my country's offshore areas and some other occasions in coastal areas, the medium-voltage power cables used for power transmission are generally ordinary medium-voltage power cables. However, ordinary medium-voltage power cables are exposed during use as follows: question: [0004] 1. Due to the medium voltage power cables laid in coastal tidal areas, they may be periodically or frequently soaked in seawater, while ordinary medium voltage power cables do not have superior radial and longitudinal water resistance properties, causing water vapor to penetrate into the insulation , and the presence of water vapor in the XLPE insulation can easily cause water tree breakdown, which ultimately greatly reduces the safety and reliability of the cable. [0005] 2. There are a lo...

AI Technical Summary

Problems solved by technology

[0004] 1. Due to the medium voltage power cables laid in coastal tidal areas, they may be periodically or frequently soaked in seawater, while ordinary medium voltage power cables do not have superior radial and longitudinal water resistance properties, causing water vapor to penetrate into the insulation , and the presence of water vapor in the XLPE insulation can easily cause water tree breakdown, which ultimately greatly reduces the safety and reliability of the cable

[0005] 2. There are a lot of salt and some other chemical substances in the seawater and air in coastal tidal flat areas, and ordinary medium-voltage power cables do not have superior seawater and salt spray corrosion resistance, and the cables are soaked in seawater and salt spray. After corrosion, its outer sheath and the internal components of the cable are quickly corroded, and finally the cable is often very short in service life

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