Metal inter-locked armored fireproof and dampproof power cable

Abstract

The invention discloses a metal inter-locked armored fireproof and dampproof power cable, which comprises copper conductors, fire-resistant insulating layers, a filling layer, a double-sided water-blocking layer, an inter-locked armor layer, an outer sheath and a cable body, wherein the cable body is composed of the copper conductors, the fire-resistant insulating layers, the filling layer, the double-sided water-blocking layer, the inter-locked armor layer and the outer sheath, the cross section of the cable body is shaped like a circle, the copper conductors are externally wrapped with the fire-resistant insulating layer, three fire-resistant insulating layers, which are close to each other, are wrapped inside the double-sided water-blocking layer, gaps between the double-sided water-blocking layer and the fire-resistant insulating layers and gaps among the three fire-resistant insulating layers which are close to each other are filled with the filling layer, the double-sided water-blocking layer is externally wrapped with the inter-locked armor layer, and the inter-locked armor layer is externally wrapped with the outer sheath. The metal inter-locked armored fireproof and dampproof power cable has a good effect of shielding external signals, can block interference of the external signals, and is good in water blocking and damp proofing performance due to the application of the double-layer water-blocking tape and the 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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