Multi-section fireproof cable

Abstract

The invention discloses a multi-segment fireproof cable, and belongs to the field of cables, the multi-segment fireproof cable comprises cable main bodies, a segment ring is connected between two adjacent cable main bodies, the segment ring comprises a fixed ring, two ends of the fixed ring are clamped with elastic joints matched with the cable main bodies, the outer side of the cable main body is provided with an insulation protection layer, and the insulation protection layer is provided with a plurality of insulation layers. The two ends of the insulation protection layer are fixedly connected with the two elastic rings respectively, a plurality of evenly distributed fireproof ropes are fixedly connected in the insulation protection layer, an elastic connecting block is connected between every two adjacent segment columns, and a plurality of elastic supporting layers are fixedly connected to the outer wall of the cable body. When the cable is close to high-temperature flame, the net ring is embedded into the softened elastic supporting layer to form a partition area, and the fireproof performance of the partition area is enhanced through the fire retardant discharged from the fireproof rope, so that the area between the cable main body and an ignition point is enhanced.

Description

technical field [0001] The present invention relates to the field of cables, in particular to a multi-segment fireproof cable. Background technique [0002] At present, with the rapid development of my country's social economy, there are more and more important engineering facilities such as subways, tunnels, power plants, nuclear power plants, and large supermarkets, convention centers and other densely populated places, which have put forward requirements for safety performance under fire conditions. It is required that the cable can still maintain normal power supply for a period of time in the event of fire, so as to facilitate escape and rescue. [0003] With the development of the polymer material industry, polymer synthetic materials are more and more widely used in construction, chemical, military and transportation fields, due to the flammability of polymer materials. Therefore, flame retardant technology has attracted global attention, with the increasing awareness...

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Problems solved by technology

[0004] However, due to the production process and quality requirements of the general fireproof cable itself, it is simply filled or wrapped with a fireproof layer, which has many defects, or it is treated with a flame retardant on its surface, or it cannot produce cables with large cross-sections and long lengths. Either the insulation layer of the wrapping falls off and causes an accident

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