Flame-retardant high-temperature-resistant cable

Abstract

The invention belongs to the technical field of cables, and particularly relates to a flame-retardant and high-temperature-resistant cable which comprises wires, filler, a barrier layer and an armor layer. The wires are located in the barrier layer, and the space between the wires and the barrier layer is filled with the filler. The armor layer wraps the barrier layer; an arc-shaped groove is formed in the outer wall of the barrier layer; the groove bottom of the arc-shaped groove is communicated with the filler, and a first groove is formed in one groove wall of the arc-shaped groove; and thesection of the first groove is in an arc shape, and an arc-shaped plate is connected into the first groove in a sliding mode. An arc-shaped rod is arranged in the arc-shaped groove; according to theflame-retardant high-temperature-resistant cable, an arc-shaped plate is subjected to the action of a first spring and is matched with a solution in a second groove to push a sliding block to drive the arc-shaped plate to move, so that the flame-retardant high-temperature-resistant cable has the effects of blocking flame combustion and dissipating heat during working, and the service life of the flame-retardant high-temperature-resistant cable is prolonged; and thus, the performance of the flame-retardant and high-temperature-resistant cable is improved.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a flame-retardant and high-temperature-resistant cable. Background technique [0002] Power communication cable products are responsible for the transmission of electric energy, important data, images and other information in the safety system of buildings and equipment engineering, because at present, cable products often play a role in combustion and even release poisonous gas in a fire, which endangers people's lives and property Safety problems, and bring irreparable losses and negative impacts; According to statistics, the occurrence of building fires caused by electrical lines in crowded places, high-rise important buildings, office buildings, etc., has caused huge losses to the people ; In view of the fact that the cable has the concealment of laying, the spread of combustion, and the toxicity of combustion smoke in the fire, the relevant departments of fire pro...

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Problems solved by technology

[0002] Power communication cable products are responsible for the transmission of electric energy, important data, images and other information in the safety system of buildings and equipment engineering, because at present, cable products often play a role in combustion and even release poisonous gas in a fire, which endangers people's lives and property Safety problems, and bring irreparable losses and negative impacts; According to statistics, the occurrence of building fires caused by electrical lines in crowded places, high-rise important buildings, office buildings, etc., has caused huge losses to the people ; In view of the fact that the cable has the concealment of laying, the spread of combustion, and the toxicity of combustion smoke in the fire, the relevant departments of fire protection and architectural design have put forward various fire protection requirements for wires and cables to adapt to and meet the growing safety of the people. Requirements; fire-resistant cables need to be flame-retardant, fire-resistant, low-smoke and unobstructed, and have a certain ability to resist and suppress fire; during the power transmission process of existing cables in the desert, due to the small specific heat capacity of sand, it will be exposed to strong sunlight during the day. Therefore, in the existing flame-retardant and high-temperature resistant cables, a flame-retardant layer and a heat-insulating layer are added to the outside of the wire to prevent flames from burning. The heat accumulated during the day cannot be discharged, which leads to an increase in the internal resistance of the cable, and also accelerates the aging of the insulation layer of the inner wire of the cable, which in turn affects the performance of the flame-retardant and high-temperature resistant cable.

[0003] There are also some technical solutions for flame-retardant and high-temperature-resistant cables in the prior art. For example, a Chinese patent with application number CN201921650613.4 discloses a flame-retardant and high-temperature-resistant cable, including cable cores and coated with The inner protective layer and the outer protective layer on the cable core. The inner protective layer includes the inner sealing insulating layer and the outer moisture barrier layer. Nylon powder is filled between the cable core and the sealing insulating layer. The outer protective layer is from the inner layer to the outer protective layer. The outer layer is divided into heat insulation layer, armor layer and anti-corrosion layer in turn. The heat-insulation layer includes the inner glass fiber layer and the outer aluminum foil layer. The armor layer is a galvanized steel wire layer wrapped on the aluminum foil layer. The anti-corrosion layer It is an LLDPE coating coated on the galvanized steel wire layer; this technical scheme combines the innovative design on the basis of the commonly used high-temperature resistant cables, and sets a glass fiber layer and an aluminum foil layer in the armor layer, so that the cable not only has good high temperature resistance, and also has the effect of ventilation and heat dissipation; but the wire core of this technical solution is wrapped by the inner protective layer and the outer protective layer, so that the heat dissipation effect of the technical solution is low, which in turn causes the limitation of the technical solution

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