Insulated fireproof mineral cable

Abstract

The invention discloses a insulated fireproof mineral cable. The insulated fireproof mineral cable comprises a cable inner core and a cable outer layer wrapping the cable inner core, wherein a space between the cable inner core and the cable outer layer is filled with inorganic mineral fillers; the cable inner core comprises at least two insulated wire cores insulated from each other; each insulated wire core comprises at least two conductor wire cores and an insulated layer wrapping the conductor wire cores; the cable outer layer comprises an inorganic insulated wrapping tape, a metal inner protective jacket, an isolating layer and an outer protective jacket from inside to outside sequentially. The insulated fireproof mineral cable does not release harmful gas or smoke during combustion, and does not cause a secondary disaster; the inorganic insulated wrapping tape, the inorganic mineral fillers and the isolating layer can be used for attracting a large amount of heat and forming a carbon housing layer to isolate air, so that the supply of oxygen and the flow of combustible gas are blocked, the insulated layer is protected from being combusted, and the cable is prevented from being further combusted. The insulated fireproof mineral cable is mainly suitable for a project at the nominal voltage of not higher than 1000 V.

Description

technical field [0001] The invention relates to a fireproof cable, in particular to a mineral insulated fireproof cable. Background technique [0002] With the rapid development of the national economy and the continuous improvement of people's living standards, social electricity consumption has greatly increased. [0003] With the sharp increase in the consumption of various electrical equipment, electrical fire accidents have also increased sharply. According to statistics, about more than 100,000 fires occur in my country every year, and the direct property loss is more than one billion yuan. Among them, fires caused by electrical reasons such as short circuit of wires and cables, overloading, and electrical equipment failure account for about 30% of the total. In electrical fires, fires caused by wires and cables account for about half. Therefore, people pay more and more attention to the flame retardant and fire safety issues of wires and cables, and the requirement...

AI Technical Summary

Problems solved by technology

Although the current insulated fireproof cable has certain flame-retardant or fire-resistant properties, it is easy to release harmful gas and smoke when it burns, causing secondary disasters, and it cannot effectively isolate the air, and it cannot prevent the cable from further burning in the event of a fire.

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