Light-emitting intrinsic safety coaxial composite low-voltage cable for environment-friendly smart power grid and preparation method of light-emitting intrinsic safety coaxial composite low-voltage cable

Abstract

The invention discloses a light-emitting intrinsic safety coaxial composite low-voltage cable for an environment-friendly smart power grid and a preparation method of the light-emitting intrinsic safety coaxial composite low-voltage cable. The light-emitting intrinsic safety coaxial composite low-voltage cable comprises a cable core, wherein the cable core is formed by twisting a single circular insulating wire core located at the center of the cable core and a plurality of fan-shaped insulating wire cores which surround the outside of the circular insulating wire core and are arranged concentrically with the circular insulating wire core; a ceramic fireproof layer wraps the outside of the cable core; a metal armor layer which is 0.5mm in thickness wraps the outside of the ceramic fireproof layer; a high-conductivity alloy wire of which the outer diameter is 0.65mm is embedded into the metal armor layer; a high-strength low-smoke halogen-free flame-retardant olefin sheath layer which is 2.0mm in thickness coats the outside of the high-conductivity alloy wire in an extruding manner; and a fluorescence induction red warning ribbon is arranged in the high-strength low-smoke halogen-free flame-retardant olefin sheath layer. The light-emitting intrinsic safety coaxial composite low-voltage cable is reasonable in structural design; the backward productivity is eliminated; transformation of scientific and technological achievements is achieved; the cost performance of a product is greatly improved; resources are saved; and benefits are brought for people.

Description

[0001] technical field [0002] The invention relates to the field of wires and cables, in particular to a low-voltage power cable with 0.6 / 1KV luminescent intrinsically safe composite structure for an environment-friendly smart grid and a preparation method thereof, in particular to a power cable used for automatic control of power grids, remote collection of power transmission information, and cable operation. Intrinsically safe and two-way interaction between the power grid and power users, an environmentally friendly smart grid with a rated voltage of 35kV and below, a light-emitting intrinsically safe composite structure power cable and a manufacturing method thereof, which meet the development of the power supply system in the direction of intelligence, high speed, reliability and safety demand. Background technique [0003] Cables manufactured by traditional technology have high production process costs, low cost performance, backward process technology, and poor prac...

AI Technical Summary

Problems solved by technology

[0003] Cables manufactured by traditional technology have high production process cost, low cost performance, backward process technology, and poor practical performance; imported similar products do not match the domestic power system, and the cost will be greatly increased, and failures frequently occur during construction and use. Factors such as low levels, halogens that are not environmentally friendly, no intrinsically safe functions, and no warnings will hinder production and life, and even cause disasters.

[0004] The traditional production technology of power cables for smart grids has the following problems: 1) The poor performance of the material itself leads to poor insulation, mechanical and electrical properties, and contains halogens; 2) The structure is unreasonable, and there is no high conductivity alloy wire, capacitance and impedance Larger, poor shielding performance and anti-interference performance, no explosion-proof function; 3) There is no fluorescent induction red warning ribbon, the failure rate of cable construction is high, and intrinsic safety is not guaranteed; 4) The flame retardant and fire resistance of the cable reach Class A at the same time , high manufacturing cost and low cost performance; 5) Waste of national resources and social labor

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