Self-supporting metal protection type fireproof cable, production equipment thereof and production process thereof

Abstract

The invention relates to a cable, and more particularly to a self-supporting metal protection type fireproof cable, production equipment thereof and a production process thereof. The self-supporting metal protection type fireproof cable comprises a copper core conductor. A ceramic insulating layer is sleeved onto the outside of the copper core conductor. A fireproof mica tape insulating layer is sleeved onto the outside of the ceramic insulating layer. A metal sheath is sleeved onto the outside of the fireproof mica tape insulating layer. The metal sheath comprises a sleeve and a plurality of positioning projections uniformly distributed around the axis of the sleeve. An accommodating groove is arranged between every two adjacent positioning projections. A fireproof mud spacer sleeve is sleeved onto the outside of the metal sheath. A flame-retardant jacket is sleeved onto the outside of the fireproof mud spacer sleeve. The toughness of the cable can be effectively enhanced. Meanwhile, the waterproof and fireproof effects of the cable are improved.

Description

technical field [0001] The invention relates to a cable, in particular to a self-supporting metal-protected fire-resistant cable and its production equipment and production process. Background technique [0002] Existing cables are provided with an insulating layer, a refractory layer and a flame-retardant sheath on the outside of the copper core conductor, usually using ceramics, fire-proof mud or halogen-free low-smoke flame-retardant polyolefin materials, resulting in low internal support strength of the cable. The cable of this type of structure has poor toughness and limited waterproof effect. Contents of the invention [0003] The present invention mainly aims at the above problems, and provides a self-supporting metal-protected fire-resistant cable capable of effectively enhancing cable toughness and improving waterproof and fireproof effects, as well as its production equipment and production process. [0004] The purpose of the present invention is mainly achieve...

AI Technical Summary

Problems solved by technology

[0002] Existing cables are provided with an insulating layer, a refractory layer and a flame-retardant sheath on the outside of the copper core conductor, usually using ceramics, fire-proof mud or halogen-free low-smoke flame-retardant polyolefin materials, resulting in low internal support strength of the cable

The cable of this type of structure has poor toughness and limited waterproof effect

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