Fireproof armored cable
An armored cable and fire-resistant technology, applied in the field of fire-resistant armored cables, can solve the problems of cable power failure, escape and rescue troubles, and loosening, and achieve good fire-resistant and heat-insulating effects and stable cable structures.
Inactive Publication Date: 2012-07-11
WUXI FUHUA CABLE
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Problems solved by technology
[0003] General fire-resistant cables use mica tape wrapped around the conductor to achieve fire-resistant effects, but fires are often accompanied by various shaking and falling objects, which may cause the original relatively stable fire-resistant layer to become loose or even fall apart, resulting in the cable being damaged. Breakdown of short circuit and power failure, which brings great trouble to personnel escape and rescue
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[0011] Such as figure 1 As shown, a fire-resistant armored cable of the present invention mainly includes a cable core twisted by several wire cores, wherein the wire core is composed of a conductor 1 in the middle and a refractory layer 2 and an insulating layer 3 arranged outside the conductor. The gap and outside of the cable core are provided with an inorganic filling layer 4 , and an inner sheath 5 , an inorganic heat insulation layer 6 , an armoring layer 7 and an outer sheath 8 are sequentially arranged outside the inorganic filling layer 4 . The inorganic filling layer 4 is composed of rope-like inorganic materials, such as glass fiber, and the inorganic heat-insulating layer 6 is composed of two layers of high flame-retardant glass cloth tapes sandwiched by synthetic mica paper.
[0012] The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of th...
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The invention discloses a fireproof armored cable which comprises a cable core formed by twisting a plurality of wire cores, wherein the wire core comprises a middle conductor, a fireproof layer and an insulated layer; the fireproof layer and the insulated layer are arranged outside the middle conductor; an inorganic filler layer is arranged in the gap of the cable core and outside the cable core; an inner protection layer, an inorganic thermal insulation layer, an armored layer and an outer protection layer are arranged outside the inorganic filler layer in sequence. The inorganic filler layer is formed by rope-shaped inorganic material, the inorganic thermal insulation layer is formed by two layers of high flame-retardant glass tapes and a synthetic mica paper adhered and clipped between the two layers of the high flame-retardant glass tapes, so as to play a very good heat insulation role in fire hazard, thus the insulation layer of the cable is softened in the fire hazard but not melted. The armored layer is formed by armoring steel belt, so as to bear the external force, fix the cable structure and insulate the fire, thus the cable is not easy to impact to be destroyed in the fire hazard, the relatively long-time normal operation of the cable in the fire hazard is ensured and the power supply guarantee is given to person evacuation and rescue.
Description
[0001] technical field [0002] The invention relates to a power cable, in particular to a fire-resistant armored cable. Background technique [0003] General fire-resistant cables use mica tape wrapped around the conductor to achieve fire-resistant effects, but fires are often accompanied by various shaking and falling objects, which may cause the originally relatively stable fire-resistant layer to become loose or even fall apart, resulting in the cable being damaged. Breakdown and short circuit and power failure have brought great trouble to personnel escape and rescue. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide an armored cable with good fire resistance. [0005] A fire-resistant armored cable according to the present invention includes a cable core twisted by several wire cores. The wire core is composed of a conductor in the middle and a refractory layer and an insulating layer arranged outside the c...
Claims
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Inventor 谭长生吴恒
Owner WUXI FUHUA CABLE