Crosslinked polyethylene insulated halogen-free low-smoke flame-retardant power cable

Abstract

The invention discloses a crosslinked polyethylene insulated halogen-free low-smoke flame-retardant power cable which comprises conductors, insulating layers, a filling layer, a wrapping tape layer, a steel tape armor layer, an inner sheath layer and an outer sheath layer. The wrapping tape layer is arranged in the outer sheath layer, the conductors are located in the wrapping tape layer, the insulating layer wraps the surfaces of the conductors, the steel tape armoring layer wraps the inner layer surface of the outer sheath layer, the inner sheath layer is arranged between the steel tape armoring layer and the wrapping tape layer, and the filling layer is filled in the insulating layer and the wrapping tape layer. The halogen-free low-smoke flame-retardant belt material contained in the cable does not contain halogen, harmful gas and corrosive gas cannot be generated during combustion, and the smoke amount is small during combustion; and when the cable is broken or buried, heavy metal containing lead and the like cannot be separated out from the cable, and harm to soil and human bodies is avoided.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a cross-linked polyethylene insulated halogen-free low-smoke flame-retardant power cable. Background technique [0002] With the development of modern science and technology and the improvement of people's living standards, energy and information are indispensable resources, and the transmission of electric energy and information is inseparable from wires and cables, and wires and cables are also one of the important ways to spread fire. According to incomplete statistics, about 35% of fires are caused by wires and cables, and about one-third of the deaths are caused by suffocation due to inhalation of toxic gases released when wires and cables burn. Therefore, it is a problem that the wire and cable industry must face to prevent the burning of wires and cables and prevent the release of toxic and harmful corrosive gases and dense smoke. [0003] As we all know, ordin...

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Problems solved by technology

[0003] As we all know, ordinary PVC insulated wire and cable has excellent mechanical, electrical and processing properties, but it is flammable (although it has certain flame retardant properties), high calorific value, fast flame propagation speed, and most importantly, it will burn when burned. A large amount of toxic and harmful corrosive gases (such as hydrogen chloride, dioxin, etc.) and dense smoke are released, causing death and equipment damage

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