Flame-retardant and fire-proof power cable

Abstract

The invention discloses a flame-retardant and fire-proof power cable in the technical field of power cables. The flame-retardant and fire-proof power cable includes an outer sheath, the inner wall ofthe outer sheath is provided with a flame retardant bag tape, the inner wall of the flame retardant bag tape is provided with an armor layer, the inner wall of the armor layer is provided with a sandwich fireproof layer, the inner wall of the sandwich fireproof layer is provided with an outer metal shielding layer, the inner wall of the outer metal shielding layer is uniformly provided with conductor protective sleeves, a conductor is arranged in the inner cavity of each conductor protective sleeve, reinforcing ribs are arranged between the two adjacent groups of the conductor protective sleeves, the gap between the outer metal shielding layer and the reinforcing ribs is filled with rubber balls. The flame retardant filler in the rubber bulges can effectively prevent the external fire, andthe sandwich fireproof layer can effectively play the role of flame retardance; the mica tape has the high temperature resistance, and can better protect the cable from damage in a short period of time, to provide longer rescue time for the construction personnel.

Description

technical field [0001] The invention relates to a flame retardant and fireproof power cable in the technical field of power cables. Background technique [0002] In the power system, the cable plays the role of transmitting electric energy, and the electric energy transmitted by the cable provides the needs of industrial production and people's life, so the cable plays an extremely important role in today's society. Generally, the trunk road cables are used to transmit and distribute high-power cables, and cannot be interrupted. If the trunk road cables are interrupted, the impact will be immeasurable, and the basic life of people in the entire area will be seriously affected, because the trunk road cables have a great impact on performance. The requirements are also very high, one of the important ones is the ability of flame retardant and fire prevention. [0003] At present, the flame retardant and fireproof ability of the cables on the main road is still poor, and it is...

AI Technical Summary

Problems solved by technology

[0003] At present, the flame retardant and fireproof ability of the cables on the main road is still poor, and it is easy to cause damage to the insulation layer due to high temperature and small fire, causing a short circuit of the wire and causing a larger fire, causing the main road to be forced to cut off the power, and it is impossible to give the construction personnel a long rescue time. Existing cables will have a shielding layer on the outside, and after multiple signal transmission lines are set together, they will easily rub against each other, which may cause damage to the shielding layer and affect the shielding effect. The mutual extrusion and friction inside the cable will also cause cause wear and tear, for which we propose a flame retardant and fireproof power cable

Images