Waterproof cross linked polyethylene insulated power cable

Abstract

The invention relates to a waterproof cross linked polyethylene insulated power cable. The cable comprises cable cores. The cable cores are wrapped by wrapping tape in a winding mode after being stranded, a cable core shielding layer is arranged on the outer side of the wrapping tape, a longitudinal waterproof layer is arranged on the outer side of the cable core shielding layer, a metal-plastic composite waterproof layer is arranged on the outer side of the longitudinal waterproof layer, a metal shielding layer is arranged on the outer side of the metal-plastic composite waterproof layer, a cross linked polyethylene insulated layer is arranged on the outer side of the metal shielding layer, an outer sheath layer is arranged on the outer side of the cross linked polyethylene insulated layer, and a semi-conductive coating is arranged on the outer side of the outer sheath layer. Each cable core comprises a conductor, and a conductive inner shielding layer, a conductor inner insulating layer, a corrugated aluminum wrapped waterproof layer, a waterproof layer, a conductor outer shielding layer and a conductive outer insulating layer are sequentially arranged on the outer side of the conductor. The waterproof cross linked polyethylene insulated power cable is provided with a good waterproof structure so that it can be effectively avoided that the water tree phenomenon is caused after the cable exists in a humid environment for a long time, and the cable is effectively protected.

Description

technical field [0001] The invention relates to a power cable, in particular to a waterproof cross-linked polyethylene insulated power cable. Background technique [0002] At present, with the rapid development of the national economy and the electric power industry, the requirements for cables used in power supply and waterproof projects such as subways, nuclear power plants, shopping malls, ports, hydropower stations, ship locks, tunnels, chemicals, and garden lighting are getting higher and higher. All cables have a certain degree of water permeability. If the cable runs for a long time in the environment of the Changsha Supermarket, the external moisture will slowly penetrate into the insulation and form a water tree, which will cause the insulation layer of the cable to be broken down, resulting in leakage. And the service life of the cable is short, so the cable laid in the water environment generally requires the cable to have a certain waterproof structure. Content...

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Problems solved by technology

[0002] At present, with the rapid development of the national economy and the electric power industry, the requirements for cables used in power supply and waterproof projects such as subways, nuclear power plants, shopping malls, ports, hydropower stations, ship locks, tunnels, chemicals, and garden lighting are getting higher and higher. All cables have a certain degree of water permeability. If the cable runs for a long time in the environment of the Changsha Supermarket, the external moisture will slowly penetrate into the insulation and form a water tree, which will cause the insulation layer of the cable to be broken down, resulting in leakage. And the service life of the cable is short, so the cable laid in the water environment generally requires the cable to have a certain waterproof structure

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