Explosion-proof elevator cable for fire protection

Abstract

The invention discloses an explosion-proof elevator cable for fire protection, which comprises a cable core, an elastic filling layer, an inner sheath, a tensile and compressive layer, a metal shield layer and an outer sheath, wherein the cable core comprises a plurality of independent control lines, power lines and twisted pair communication conversion video lines; the control lines, power lines and twisted pair communication conversion video lines are provided with the elastic filling layer; the inner sheath is wrapped outside the elastic filling layer and used for protecting the cable core in the inner layer; the outer side of the inner sheath is sequentially provided with the tensile and compressive layer for improving resistance, the metal shield layer for preventing radiation leakage and the outer sheath for preventing physical damages; the metal shield layer is provided with a flame-retardant and explosion-proof layer; and the outer sheath uses wear-resistant, chemical-corrosion-resistant and high-temperature-resistant fluoroplastic for protection.

Description

technical field [0001] The invention relates to the field of elevator cables, in particular to an explosion-proof elevator cable for fire protection. Background technique [0002] The existing cables have an insulating layer on the outside of the wire core, and the outer periphery is covered by a cladding layer, and the sheath is outside the cladding layer. This kind of cable has a simple structure, but the shielding effect is poor, and the tensile strength is not ideal. It does not have explosion-proof function, and it is easy to cause leakage and leakage, and there are serious safety hazards. [0003] In some places with explosion hazards and high explosion-proof safety requirements, such as offshore oil platforms, refueling stations, etc., cables are often used to transmit automatic control signals, but the cables currently used are still ordinary cables. , all have no requirements for explosion-proof performance. The structure only stipulates the thinnest point of insul...

AI Technical Summary

Problems solved by technology

[0003] In some places with explosion hazards and high explosion-proof safety requirements, such as offshore oil platforms, refueling, gas stations, etc., cables are often used to transmit automatic control signals, but the cables currently used are still ordinary cables. , there is no requirement for explosion-proof performance. The structure only stipulates the thinnest point of insulation, and the material is only ordinary material, which cannot meet the explosion-proof requirements. At the same time, the existing cables only stipulate shielding density requirements and have no drainage measures, which cannot completely prevent interference.

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