Manufacturing process of medium-voltage fireproof cable for intelligent early warning communication

Abstract

The invention discloses a manufacturing process of a medium-voltage fireproof cable for intelligent early warning communication. The medium-voltage fireproof cable for intelligent early warning communication comprises a power transmission unit and an optical transmission unit, and the power transmission unit is formed by a copper conductor, a conductor shielding layer, an insulating layer and an insulating shielding layer which coats the outer surface of the copper conductor from inside to outside, and a metal shielding layer coating the outer surface of the insulating shielding layer. The power transmission unit and the optical transmission unit are wrapped by a wrapping tape to form a first winding layer, the outer surface of the first winding layer is coated with an oxygen barrier layer, and the outer surface of the oxygen barrier layer is coated with a refractory layer. The outer surface of the refractory layer is coated with a second winding layer, and an outer sheath is extrudedon the outer surface of the second winding layer. The prepared cable has good heat insulation and flame retardant performance and is used for a distributed optical fiber temperature measuring system to achieve the purpose of timely detecting a disaster and emitting an early warning in the early stage of fire, and a time guarantee is provided for escape and disaster relief.

Description

technical field [0001] The invention relates to the field of cable technology, in particular to a manufacturing process of a medium-voltage fireproof cable for intelligent early warning communication. Background technique [0002] With the rapid development of my country's social economy, there are more and more large buildings, subways, tunnels, nuclear power plants and other important engineering facilities, as well as large supermarkets, exhibition centers and other densely populated places, and the requirements for flame retardancy and fire prevention of wires and cables are also increasing. high. Once the medium-voltage lines in the building catch fire and short-circuit, other power distribution systems will not be able to operate normally. Therefore, the fire protection and fire warning of medium-voltage cables are particularly important. [0003] At present, the fireproof cables on the market can meet the test requirements of TICW.8-2012. Some medium voltage fireproof...

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Problems solved by technology

[0003] At present, the fireproof cables on the market can meet the test requirements of TICW.8-2012. Some medium voltage fireproof cables can play a communication role, but they cannot monitor the cable core temperature under normal working conditions and fire conditions, and cannot perform load monitoring. , fault alarm location and fire warning function

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