Metal interlocked armored fireproof and moistureproof power cable

Abstract

The invention discloses a metal interlocked armored fireproof and moistureproof power cable, comprising a copper conductor, fire-resistant insulating layers, packed layers, a double-faced water blocking layer, an interlocked armored layer, an outer sheath and a cable body; the cable body is composed of the copper conductor, the fire-resistant insulating layer, the packed layer, the doubled-faced water blocking layer, the interlocked armored layer and the outer sheath, the cross section of the cable body is circular, one fire-resistant insulating layer is wrapped outside the copper conductor, three mutually abutted fire-resistant insulating layers are wrapped inside the double-faced water blocking layer, the packed layers are packed in gaps between the double-faced water blocking layer as well as the fire-resistant insulating layer and the three mutually abutted fire-resistant insulating layers, the interlocked armored layer is wrapped outside the double-faced water blocking layer, andthe outer sheath is wrapped outside the interlocked armored layer. The power cable disclosed by the invention has relatively good effect of shielding an external signal, can block interference of theexternal signal and has relatively good water blocking and moistureproof properties due to use of a double-layer water blocking tape and a polyethylene outer sheath.

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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