Metal inter-locked armored fire-and-damp-proof power cable

Abstract

The invention discloses a metal chain armored fire-and-damp-proof power cable. The cable comprises a copper conductor, fire-resistant insulation layers, packing layers, a double-sided water-resisting layer, an inter-locked armoring layer, an outer sheath and a cable body; the cable body is prepared from the copper conductor, the fire-resistant insulation layers, the packing layers, the double-sided water-resisting layer, the inter-locked armoring layer and the outer sheath, the cross section of the cable body is shaped like a circle, the copper conductor is wrapped by one fire-resistant insulation layer, three fire-resistant insulation layers which are close to each other are wrapped by the double-sided water-resisting layer, gaps between the double-sided water-resisting layer and the fire-resistant insulation layer and the three fire-resistant insulation layers which are close to each other are filled with the packing layers, the double-sided water-resisting layer is wrapped by the inter-locked armoring layer, and the inter-locked armoring layer is wrapped by the outer sheath. The metal chain armored fire-and-damp-proof power cable has a good effect of shielding outside signals and can block interference of the external signals, and due to the fact that the double-sided water-resisting layer and the polyethylene outer sheath are arranged, the water resisting and damp proofing properties are good.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a metal interlocking armored fireproof and moistureproof power cable. Background technique [0002] At present, with the continuous development of modern technology, the production technology of fireproof cables has developed to a higher level. The production of existing fireproof cables is mainly to use copper strips of a certain thickness for tubular welding outside the cable core, and then rolled Copper sheathed fireproof cable with spiral grain. [0003] The manufacturing process of the fireproof cable is relatively complicated, mainly due to the use of argon arc welding in the process of copper strip welding. If this process is not properly operated, it is easy to cause missing welding, and after embossing, the edge of the copper strip that is missing welding may be broken. Once this happens, the cable core will be damaged, which will inevitably lead to segmental processing ...

AI Technical Summary

Problems solved by technology

[0003] The manufacturing process of the fireproof cable is relatively complicated, mainly due to the use of argon arc welding in the process of copper strip welding. If this process is not properly operated, it is easy to cause missing welding, and after embossing, the edge of the copper strip that is missing welding may be broken. Once this happens, the cable core will be damaged, which will inevitably lead to segmental processing of the cable, which will increase the difficulty of use for customers and cause unnecessary economic burden.

In addition, this kind of cable cannot be produced with multi-core and large cross-section, because during the laying process of multi-core and large-section cable, the cable is subjected to a large traction force, which may break the threaded copper sheath. Thus affecting the performance of the cable

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