Flame-retardant cable and cable flame-retardant layer forming process

A technology of flame-retardant cables and flame-retardant layers, which is applied in the direction of insulated cables, flexible cables, and cable/conductor manufacturing, and can solve the problems of not considering the flexibility of flame-retardant materials, increasing the length of cables, and increasing the cost of use. , to achieve a good flame retardant effect, reduce space occupation, and save the use of the effect

Pending Publication Date: 2022-03-25
庞雨芃
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In this solution, the flame-retardant effect of the flame-retardant cable is improved to a certain extent, but it does not consider that the flexibility of the flame-retardant material is lower than that of ordinary cable packaging materials, and requires a larger bending radius and takes up more space when used. , it is inconvenient to install and use, and it increases the length of the cable and increases the cost of use

Method used

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  • Flame-retardant cable and cable flame-retardant layer forming process

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Embodiment approach

[0032] As an embodiment of the present invention, a mesh rope core 61 is provided inside the cladding layer 6, and the mesh rope core 61 is made of a refractory material, and the hole diameter of the mesh rope core 61 is smaller than the diameter of the bubble film 51; During work, by setting the mesh rope core 61, when the covering layer 6 is damaged by external force, the mesh rope core 61 connects the broken covering layer 6, further ensuring the protective effect of the covering layer 6, and the flame burns When the covering layer 6 is easy to melt and condense, it is not easy to drip, so that the air bubble film 51 is stabilized. When the covering layer 6 is burned and damaged, because the aperture of the mesh rope core 61 is smaller than the diameter of the air bubble film 51, the air bubble film 51 will be further strengthened. 51 to limit the position to prevent the air bubble film 51 from being bonded tightly and falling off, which will affect the flame retardant effec...

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Abstract

The invention belongs to the technical field of flame-retardant cables, and particularly relates to a flame-retardant cable and a cable flame-retardant layer forming process. The outer side of the conductive core is wrapped with an insulating layer, the outer side of the insulating layer is wrapped with a heat insulation layer, the outer side of the heat insulation layer is wrapped with a shielding layer, the outer side of the shielding layer is wrapped with a flame-retardant layer, the flame-retardant layer is filled with an air bubble film, the air bubble film is made of a low-smoke flame-retardant material, and the air bubble film is filled with inert gas. The flexibility of a flame-retardant material is lower than that of a common cable wrapping material, a larger bending radius is needed, more space is occupied, installation and use are inconvenient, the use length of the cable is increased, and the use cost is increased; according to the invention, the air bubble film is arranged, so that the flexibility of the cable is better, the bending radius during use is smaller, the occupied space is reduced, the use is convenient, and the use of cable materials is saved under the condition that the good flame retardant property of the cable is ensured.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant cables, and in particular relates to a flame-retardant cable and a forming process for a flame-retardant layer of the cable. Background technique [0002] Flame-retardant cable refers to the cable that the sample is burned under the specified test conditions. After the test fire source is removed, the spread of the flame is only within a limited range, and the residual flame or residual flame can extinguish itself within a limited time. The fundamental characteristic is: it may be burned out in case of fire and cannot operate, but it can prevent the spread of fire. In layman's terms, in the event of a wire fire, it can limit the combustion to a local area without spreading, keep other various equipment, and avoid greater losses. There is still room for improvement in the existing flame-retardant cables. [0003] For example, a Chinese patent with the application number CN201710247754.0 d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/295H01B7/04H01B7/18H01B13/22
CPCH01B7/295H01B7/04H01B7/1805H01B13/22
Inventor 庞雨芃叶亚华
Owner 庞雨芃
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