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Self-extinguishing cable

A technology for fire extinguishing cables and air chambers, which is applied in the direction of insulated cables, cables, circuits, etc., and can solve the problems of not being able to effectively and reliably avoid burning of wires and cables

Pending Publication Date: 2021-05-25
重庆鸽牌电线电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention intends to provide a self-fire-extinguishing cable to solve the problems that the fire-proof and flame-retardant properties of cables in the prior art still have defects, which cannot effectively and reliably prevent the burning of wires and cables, and cannot effectively prevent the expansion of fire in time

Method used

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  • Self-extinguishing cable

Examples

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Effect test

Embodiment 1

[0019] Embodiment 1, basically as attached figure 1 Shown: a self-fire-extinguishing cable, including a conductor 1, the outer side of the conductor 1 is covered with an insulating layer, the outer side of the insulating layer is covered with a sheath layer, and eight airbag strips 4 are evenly distributed in a ring on the outer wall of the sheath layer, and the adjacent airbags The strips 4 offset each other, and the airbag strip 4 is integrally formed with the sheath layer. The cross-sectional profile of the airbag strip 4 is semi-elliptical, and the airbag strip 4 is provided with a first air chamber 5. The cross-sectional contour of the first air chamber 5 is semicircular. The chamber 5 is filled with an inert gas, preferably carbon dioxide. The sheath layer is provided with a second air cavity 6 surrounding the conductor 1, the second air cavity 6 separates the sheath layer into an inner sheath layer 2 and an outer sheath layer 3, and the second air cavity 6 is also fill...

Embodiment 2

[0022] Embodiment 2. In this embodiment, two gas nozzles are hot-melt connected on the sheath layer, one gas nozzle penetrates into the first air chamber, and the other gas nozzle penetrates into the second air chamber. In this embodiment, by setting the gas nozzle on the sheath layer, the self-fire-extinguishing cable can be injected with inert gas through the gas nozzle when it has a stable structure after the sheath layer is produced, which is more convenient for the first air cavity And the control and maintenance of the gas pressure in the second air chamber is stable, the inert gas injection operation is more convenient, and it is more conducive to reducing the production cost.

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Abstract

The invention discloses a self-fire-extinguishing cable in the field of wires and cables. The self-fire-extinguishing cable comprises a conductor, the outer side of the conductor is wrapped with an insulating layer, a sheath is processed outside the insulating layer, the sheath comprises a plurality of air bag strips which are annularly and uniformly distributed, first air cavities are formed in the air bag strips, and the first air cavities are filled with inert gas. The cable can effectively solve the problems that in the prior art, the fireproof and flame-retardant performance of a cable still has defects, burning of wires and cables cannot be effectively and reliably avoided, and fire spreading cannot be effectively avoided in time.

Description

technical field [0001] The invention relates to the field of cables, in particular to a self-extinguishing cable. Background technique [0002] As one of the important materials of modern social infrastructure, wire and cable are used to provide energy or transmit information for people's daily life, industrial production, information transmission, etc. It is an indispensable part of the infrastructure for the development of modern society. The main structure of the cable is a wire wrapped with insulating material, and the outer side of the insulating material is wrapped with a sheath material. The wire is mainly a metal wire. During the process of transmitting electric energy, a certain amount of heat will be generated due to the existence of resistance, especially some parts that transmit large current and high voltage. High-quality wires and cables will generate a lot of heat during use, and there will be spontaneous combustion caused by overheating during long-term use. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/295H01B7/02H01B7/18
CPCH01B7/02H01B7/185H01B7/1875H01B7/189H01B7/295
Inventor 李淋舟张敏梁渝张娅王孝飞王俊韬肖祖琴王玉坤曾强
Owner 重庆鸽牌电线电缆有限公司
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