Integral shielding instrument cable for flame-retardant fireproof boat and manufacturing method thereof

Abstract

The invention relates to an integral shielding instrument cable for a flame-retardant fireproof boat and a manufacturing method thereof. Flame-retardant fireproof ethylene propylene rubber insulating layers are extruded on the peripheries of stranded copper conductors in a wrapping way to form insulated cores; the insulated cores are stranded in pairs to form pair-twist wire pairs; gaps of the pair-twist wire pairs are filled with flame-retardant non-absorbent fiber fillers; a plurality of groups of pair-twist wire pairs are stranded to form a cable core; the periphery of the cable core is sequentially coated with a low-intensity non-woven fabric longitudinally-covered layer, an inner jacket and a copper foil polyester composite belt shielding layer from inside to outside; a tinned stranded copper-wire drainage wire is arranged inside the copper foil polyester composite belt shielding layer; the periphery of the copper foil polyester composite belt shielding layer is coated with an armor braid; and an outer jacket is extruded on the periphery of the armor braid in a wrapping way. The low-intensity non-woven fabric longitudinally-covered layer is completely in fit with the cable core in shape, so that a gap between the low-intensity non-woven fabric longitudinally-covered layer and the cable core is eliminated, and flame can be conveniently prevented from being spread inwards; and meanwhile, the inner jacket and the insulated cores are guaranteed not to be adhered, so that the insulated cores are not damaged when the jacket is stripped in the constructing process.

Description

technical field

[0001] The invention relates to an integrally shielded instrument cable, in particular to an integrally shielded instrument cable for flame-retardant and fire-resistant ships. The invention also relates to a method for manufacturing a flame-retardant and fire-resistant marine overall shielded instrument cable. Background technique

[0002] At present, fire-resistant marine overall shielded instrument cables generally adopt several structures such as mica tape wrapped conductor, mineral insulation, and extruded refractory silicone rubber outer braided glass fiber wire combination insulation, etc., but these types of fire-resistant cables have great disadvantages:

[0003] Mica tape wrapped fire-resistant cables are wrapped with mica tapes overlapping outside the conductor. Due to the large number of cores in marine cables, wrapping with mica tapes will result in large outer diameter and heavy weight of the finished cable, which is not conducive to ship loads. ...

Images