A low-smoke, halogen-free, flame-retardant signal control cable

Abstract

The invention discloses a low-smoke halogen-free flame-retardant signal control cable comprising core wires, a wrapping layer and a sheath layer. The core wires include conductors and insulation layers extruding the outer sides of the conductors; and the insulation layers are made of a flame-retardant cross-linked polyethylene material. The sheath layer is made of an environmentally-friendly granular low-smoke, halogen-free, flame-retardant sheathing material. A cold dry glue layer for fixed arrangement of each two core wires is arranged at the outer sides of each two insulation layers; and the space between the cold dry glue layer and the wrapping layer is filled with a composite mineral filler. According to the invention, the cold dry glue layer is fixedly arranged at the peripheries ofeach two core wires to prevent the mutual interference of signals of the wire cores; the cable has excellent tensile, halogen-free and low-smoke, and compatible performances and good flame-retardant property.

Description

technical field [0001] The invention relates to the technical field of elevator cables, and mainly relates to a low-smoke, halogen-free, flame-retardant signal control cable. Background technique [0002] Ordinary elevator cables use halogen-containing material insulation layer and sheath layer. Once a fire occurs, the halogen will produce a large amount of dense smoke, making it difficult to carry out rescue work, and it is easy for people to be suffocated by the smoke. ) releases corrosive gas of halogen acid when burning, which not only harms the human body, but also causes indirect damage to the equipment. It is not suitable for use in places with dense personnel or small spaces such as elevators. The core wire of the existing elevator cable is easy to move when the elevator goes up and down, which is easy to cause signal interference, and with the extension of the service life, the outer shell of the cable is easy to be broken, or it is easy to squeeze the inner conduct...

AI Technical Summary

Problems solved by technology

[0002] Ordinary elevator cables use halogen-containing material insulation layer and sheath layer. Once a fire occurs, the halogen will produce a large amount of dense smoke, making it difficult to carry out rescue work, and it is easy for people to be suffocated by the smoke. ) releases corrosive gas of halogen acid when burning, which not only harms the human body, but also causes indirect damage to the equipment. It is not suitable for use in places with dense personnel or small spaces such as elevators

The core wire of the existing elevator cable is easy to move when the elevator goes up and down, which is easy to cause signal interference, and with the extension of the service life, the outer shell of the cable is easy to be broken, or it is easy to squeeze the inner conductor to deform it when it is bent. Performance

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