Low-smoke halogen-free crosslinked polyethylene insulated power cable

Abstract

The invention provides a low-smoke halogen-free crosslinked polyethylene insulated power cable, including a first wire core, a plurality of second wire cores, a filling layer, a flame-retardant layer, a halogen-free wrapping layer, a lining layer and a low-smoke halogen-free flame-retardant polyolefin outer sheath layer. The first wire core includes a first conductor, a first flame-retardant material filling layer, a first crosslinked polyethylene insulating layer; the plurality of second wire cores are uniformly distributed on the circumference with the first wire core being the center, and each second wire core includes a conductor group, a second flame-retardant material filling layer and a second crosslinked polyethylene insulating layer; the flame-retardant layer is wrapped outside the first wire core and the plurality of second wire cores, and the filling layer is filled between the first wire core and the plurality of wire cores; the halogen-free wrapping layer is wrapped outside the flame-retardant layer; the lining layer is wrapped outside the halogen-free wrapping layer; and the low-smoke halogen-free flame-retardant polyolefin outer sheath layer is wrapped outside the lining layer. The low-smoke halogen-free crosslinked polyethylene insulated power cable can bear relatively high temperature, does not generate harmful substances in a high-temperature environment to pollute environment, and thus has excellent environment-friendly performance.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a low-smoke halogen-free XLPE insulated power cable. Background technique [0002] Power cables are cables used to transmit and distribute electrical energy. It is often used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. However, ordinary polyethylene insulated polyethylene sheathed cables have combustion properties, which are difficult to meet the requirements for flame retardancy. When the cable is on fire, a large amount of dense smoke is released, and the gas is highly corrosive, which will cause serious environmental pollution. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a...

AI Technical Summary

Problems solved by technology

However, ordinary polyethylene insulated polyethylene sheathed cables have burning properties, which are difficult to meet the requirements of flame retardancy, and when the cable is on fire, a large amount of dense smoke is released, and the gas is highly corrosive, which will cause serious environmental pollution

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