A self-closing semi-open flame-retardant cable

Abstract

The invention discloses a self-closing semi-open flame-retardant cable, which belongs to the field of cable technology. The invention can innovatively introduce the concept of semi-opening, and provide a space for heat exchange between the cable core and the outside under normal conditions, and effectively dissipate heat. Heat loss during power transmission avoids excessive heat accumulation in the cable core and causes combustion from the inside, and it can accumulate rainwater to prevent intrusion, and at the same time can be used to absorb heat to improve the heat dissipation effect of the cable core. In addition, a foldable heat conduction is set Flanges sense combustion, trigger the closing action by spontaneous combustion, and at the same time clear the open area, and use the gas released by the flame-retardant ball to extinguish the fire and form an oxygen-free layer, so as to achieve the purpose of flame retardancy. The present invention can effectively target The external and internal factors are simultaneously flame retardant to achieve a high degree of protection for life safety and property, and to avoid the spread of fire phenomena.

Description

technical field [0001] The invention relates to the technical field of cables, more specifically, to a self-closing semi-open flame-retardant cable. Background technique [0002] A cable is an electrical energy or signal transmission device, usually composed of several or several groups of wires. [0003] Definition 1: A wire made of one or more mutually insulated conductors and an outer insulating layer to transmit power or information from one place to another. [0004] Definition 2: It is usually a rope-like cable twisted by several or several groups of wires (at least two in each group). Each group of wires is insulated from each other and is often twisted around a center, and the entire outer wrap Has a highly insulating covering. The cable has the characteristics of internal electrification and external insulation. [0005] Power supply has become an indispensable part of the rapid development of the world economy, and wires and cables, as the carrier of power suppl...

AI Technical Summary

Problems solved by technology

Since the polymer insulation materials used in wires and cables are flammable materials, the cables are often burned by internal factors (cable self-heating, short circuit, etc.) and external factors (fire, etc.) during the transmission of electric energy, causing damage to life and property.

Traditional flame-retardant cables mainly use halogen-containing polymers (such as PVC) and halogen-containing flame retardants (chlorine- or bromine-containing compounds) to obtain good flame-retardant properties through mixing, but fires still cause cables to burn, and cables During the combustion process, a large amount of toxic smoke and corrosive gas will cause suffocation and poisoning, which will not only cause great harm to escapees and rescuers but also pollute the environment.

[0006] However, although the existing cables have obtained a certain degree of fire and flame retardancy by adopting a fully enclosed form, they have sacrificed the heat dissipation effect of the cables themselves, which is likely to cause internal factors (cable self-heating, short circuit, etc.) and external causes (fire, etc.) cause the cable to burn, so it is difficult for existing cables to achieve fire and flame retardancy by taking into account both external and internal causes

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