Environmentally-friendly flexible fireproof cable
2015
The utility model relates to an environmentally-friendly flexible fireproof cable. The environmentally-friendly flexible fireproof cable is characterized in that the fireproof insulation cable is composed of an outer wrapping layer and an inner core; a cable line core or a plurality of cable line cores are stranded so as to form the inner core; the cable line core is wrapped with double-fireproof insulating layers; a heat insulation layer, an isolation oxide layer, a shock resistant layer and an outer sheath are sequentially subjected to wrapping, so that the outer wrapping layer can be formed; an inner insulating layer and an outer insulating layer which are made of different materials are wrapped with each other in an overlapping manner so as to form the double-fireproof insulating layers, wherein the inner insulating layer is formed through wrapping a mineral insulation fireproof wrapping tape in an overlapping manner, the thickness of the wrapping tap ranging from 0.1 to 0.2mm; the outer insulating layer is formed through tightly wrapping a fireproof ceramic polyolefin insulation material, the thickness of the fireproof ceramic polyolefin insulation material ranging from 1.0 to 3.5mm; when being burnt, the double-fireproof insulating layers can be rapidly sintered to form a hard ceramic shell; and the shell can effectively isolate damage caused by high-temperature flame to the interior of a line, so that the conduction ability of the line can be ensured. With the cable adopted, a fuse will not be broken under rated working voltage within 90 minutes of fire supply when the temperature of flames is not smaller than 750 DEG C.
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