Inorganic fireproofing sleeve-type mineral insulation flexible fireproof cable

Abstract

The invention discloses an inorganic fireproof sleeve type mineral insulated flexible fireproof cable, which comprises a wire arranged in a heat insulation layer and wrapped with an inorganic composite insulation layer, and an inorganic fireproof cable filled between the inorganic composite insulation layer and the heat insulation layer. Heat-insulating fire-proof filler, aluminum-plastic composite tape waterproof layer and low-smoke and halogen-free outer sheath wrapped around the outer peripheral surface of the heat-insulation layer; between the aluminum-plastic composite tape waterproof layer and low-smoke and halogen-free outer sheath Inorganic fireproof sleeve, the inorganic fireproof sleeve is composed of a glass fiber braid wrapped around the outer peripheral surface of the waterproof layer of the aluminum-plastic composite belt and a mixed glue coated on the surface of the glass fiber braid, after 90 ° C ~ 95 ° C, 3 ~ 5h heat curing made. The invention has the advantages of having the fire-proof characteristics of a type mineral insulated cable, simple production process, production in arbitrary lengths, various specifications, high strength and good flexibility, and convenient installation and laying.

Description

technical field

[0001] The invention relates to a fireproof cable, in particular to an inorganic fireproof sleeve type mineral insulated flexible fireproof cable. Background technique

[0002] At present, the fire-resistant cable structures manufactured at home and abroad mainly include: 1. MI-type mineral insulated cables (that is, BTT fire-resistant copper tube wiring) invented in the 1890s; 2. Fire-resistant mica wrapped polymer insulation material-coated fire-resistant cables ( NH type); 3. Fireproof aluminum tube isolation sleeve type fireproof cable (NG type).

[0003] For MI-type mineral insulated cables, due to the use of copper sheaths, the amount of copper used is greatly increased and the production cost is increased; moreover, the copper tube drawing technology is complicated and the equipment investment is large; Existing cables are particularly hard, which makes laying, installation and joints more troublesome.

[0004] For fire-resistant mica-wrapped polymer...