Inorganic mineral wrapped insulated flexible fire-proof cable provided with crimping stainless steel sheath and fabrication method of flexible fire-proof cable

Abstract

The invention discloses an inorganic mineral wrapped insulated flexible fire-proof cable provided with a crimping stainless steel sheath. A cable core consists of a conductor and an insulating layer wrapping the outside of the conductor; the conductor is formed through stranding and compacting a plurality of copper wires; the conductor is overlapped and wrapped by multiple layers of an inorganic fire-resistant synthetic mica tape, and the inorganic fire-resistant synthetic mica tape is dried to form the insulating layer; the outside of the cable core is wrapped in an outer sheath longitudinally, the outer sheath is formed through welding and crimping a stainless steel tape; and a weld as long as the cable core and a stainless steel tube is formed on the surface of the stainless steel tube of the outer sheath. The cable is used in crowded theaters, malls, stations and the like and has a very important significance in personnel safety in case of fire, the life and property losses can be reduced to the greatest extent, no smog or toxic gas is generated during combustion, and no pollution is caused to an environment.

Description

Technical field: [0001] The invention relates to a flexible fireproof cable with an inorganic mineral wrapping insulation corrugated stainless steel sheath and a preparation method thereof. Background technique: [0002] In response to global environmental policies, no matter what products are marketed in countries around the world, more and more attention will be paid to "green materials", that is, attention should be paid to the impact on the environment. In addition, statistics show that about half of the fires are caused by electrical accidents, 80% of the fires in shopping malls and singing and dancing entertainment places are caused by electrical fires, and the aging and overloading of wires and cables account for a large proportion. Ordinary PVC wire and cable (insulation and sheath) burn quickly and quickly, fueling the fire, losing power supply capability within 1-2 minutes, and the black smoke released by its combustion decomposition can reach the level of invisibl...

AI Technical Summary

Problems solved by technology

However, magnesium oxide insulated fireproof cables are affected by manufacturing length, insulation performance and many other aspects, and their application range is small, and they cannot be produced in large lengths and cannot be bent.

At present, the fireproof cables with copper core and corrugated copper sheath on the market have added a certain degree of bending performance, but their airtightness has not been tested. In addition, copper is easy to oxidize and the price is high, which is also a big disadvantage.

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