Inorganic insulated flexible fireproof cable for rail transit and production equipment of cable

Abstract

The invention discloses an inorganic insulated flexible fireproof cable for rail transit. The cable includes a copper core conductor, an inorganic insulation layer, a rubber insulation layer, an inorganic fire barrier layer and a fiberglass braiding layer, wherein the inorganic insulation layer is overlaid on an outer surface of the copper core conductor, the rubber insulation layer is extruded on an outer surface of the inorganic insulation layer, the copper core conductor, the inorganic insulation layer and the rubber insulation layer are fixed by wire core stranding, and the inorganic fire barrier layer is extruded on an outer surface of the rubber insulation layer. The cable is advantaged in that through setting the inorganic insulation layer and the fiberglass braiding layer, fire resistance and safety of the fireproof cable can be effectively improved, the spread of the flame is blocked to protect the cable, through setting a telescopic sleeve and a combination clamping board, distribution of stranding distances of the fireproof cable is more uniform, processing quality of the cable is improved, the cable is more stable in stranding production operation, and stability of cable stranding is improved.

Description

technical field [0001] The invention belongs to the technical field of cable equipment, and in particular relates to an inorganic insulated flexible fireproof cable for rail transit, more specifically an inorganic insulated flexible fireproof cable for rail transit and production equipment for the cable. Background technique [0002] The inorganic insulated flexible fireproof cable for rail transit is a cable facility used for rail construction. Due to the concentration of people in rail transit stations and the high density of people in the area, the evacuation of people under fire conditions considered at the initial design stage of cable products is very important. Importantly, the fire resistance performance of cables on the market is different, and there are huge differences in fire conditions. [0003] A fireproof cable for an intelligent charging station disclosed in the comparative document CN109841305A includes a cable core composed of multiple copper wires and an o...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the poor fireproof performance of inorganic insulated flexible fireproof cables used in traditional rail transit, the traditional inorganic insulated flexible fireproof cables used in rail transit cannot be used normally in the event of fire, and a uniform and dense spongy foam insulation layer cannot be formed when exposed to fire , can not suppress the fire source, can not block the spread and spread of the flame, and reduces the protection of the cable itself; the production equipment of the traditional rail transit inorganic insulated flexible fireproof cable does not have a size adjustment structure, so that it cannot be fixed differently. The quantity of cable raw materials in different sizes reduces the scope of application of the production equipment for inorganic insulated flexible fireproof cables for rail transit; at the same time, the production equipment for traditional inorganic insulated flexible fireproof cables for rail transit has an integrated fixed structure, which is not convenient for users to adjust In order to solve the problem of maintenance operations, an inorganic insulated flexible fireproof cable for rail transit and production equipment for the cable are provided

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