Fire-resisting cable filled with metallic oxide

Abstract

The invention provides a fire-resisting cable filled with a metallic oxide. The fire-resisting cable comprises a plurality of cable cores and a center cushion layer, wherein the cable cores are distributed around the center cushion layer in an annular shape, the cable cores are twisted into the cable and then squeezed in an outer sheath in a wrapped mode, each cable core comprises a conductor, a mica layer and anti-flaming cross linked polyethylene insulated material, the gaps between the multiple cable cores is provided with metallic oxide filling layers, and a comprehensive waterproof and fireproof layer stable in structure is composed of the mica layers, the anti-flaming cross linked polyethylene insulated material and the metallic oxide filling layers. After being solidified, the metallic oxide layers and the whole cable cores are integrated, and the metal oxide layer plays a role in isolating flames and reducing heated temperature in the cable and can serve as a protective layer to effectively protect the cable from damage caused by actions of mechanical outer force or water. The fire-resisting cable not only can bear the outer force, but also can continue to supply power normally under the complex ablaze condition, and usage safety under the ablaze environment condition is improved.

Description

technical field [0001] The invention relates to a fire-resistant cable, in particular to a metal oxide-filled fire-resistant cable. Background technique [0002] At present, fire-resistant cables are mostly wrapped with mica tape on the conductor, extruded insulation layer, twisted into cable and extruded outer sheath. The insulating layer is generally cross-linked polyethylene or polyvinyl chloride, and the outer sheath is polyvinyl chloride or polyvinyl chloride. Olefin materials, polyvinyl chloride, cross-linked polyethylene, and polyolefin materials are slowly decomposed after being burned by high-temperature flames, and the wrapped mica tape maintains the insulation performance of the entire line, so that the cable can continue to operate normally. However, under actual fire conditions, the cable is also affected by other external forces and environmental factors, such as the impact of falling objects, dripping water, etc.; Make the adhesive fail, the mica layer will f...

AI Technical Summary

Problems solved by technology

However, under actual fire conditions, the cable is also affected by other external forces and environmental factors, such as the impact of falling objects, dripping water, etc.; Make the adhesive fail, the mica layer will fall off from the conductor after being hit, the insulation continuity will fail, and the moisture will slowly penetrate along the gap between the mica tape and the cladding layer, causing leakage, which brings great hidden dangers to the safety of emergency electricity

[0003] Since the current fire-resistant cables cannot meet the special factors in the fire environment, in order to overcome the safety of the existing fire-resistant cables under fire conditions, the utility model provides a fire-resistant cable filled with metal oxides. The fire-resistant cable can effectively adapt to various fire environment

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