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Flame-retardant cable

A flame-retardant cable technology, applied in the direction of insulated cables, power cables, cables, etc., can solve the problems of cable skin or internal structure damage, reduce the flame-retardant characteristics of flame-retardant cables, and affect the service life of cables, etc., to achieve structural and Stable performance, high stability, and the effect of ensuring performance

Inactive Publication Date: 2014-06-25
ANHUI XINGFU ELECTRIC APPLIANCES & CABLES
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the unreasonable design of its own structure, it is very easy to cause damage to the skin or internal structure of the cable during cable transportation and erection, which will reduce the flame-retardant characteristics of the flame-retardant cable. The performance drops sharply, seriously affecting the service life of the cable

Method used

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Embodiment Construction

[0020] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elaborated below.

[0021] Such as figure 1 As shown, a flame-retardant cable includes a conductor 1 and an insulating layer 2. The insulating layer 2 is wrapped around the outside of the conductor 1 to form a core. The outside of the core and between the core and the core are wrapped with filler Layer 3, the filling layer 3 is twisted with a plurality of wire cores to form a cable core. The material of the filling layer 3 is glass wool. Glass wool is a material made of molten glass fiberized to form cotton. It is a kind of inorganic fiber with good shape, small bulk density, high thermal conductivity, thermal insulation, good sound absorption performance, corrosion resistance, and stable chemical properties. Glass wool is used to protect the wire core from fire. ; The outer side of the cable core is extr...

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Abstract

The invention relates to a flame-retardant cable which comprises conductors and insulating layers. The insulating layers are wrapped outside the conductors to form wire cores. The space outside the wire cores and the space between the wire cores are filled with filling layers, and the filling layers and the wire cores are twisted to form a cable core; an inner protective sleeve is arranged outside the cable core in an extruded mode; a first flame-retardant layer, a first armor layer, a second flame-retardant layer, a second armor layer and an outer protective sleeve are sequentially wrapped outside the inner protective sleeve from inside to outside. The flame-retardant cable has the advantages of being reasonable in structural design, good in flame retardance and the like; arrangement is achieved according to an alternate structure, the first flame-retardant layer is protected by the first armor layer, the second flame-retardant layer is protected by the first armor layer and the second armor layer, and therefore the internal structure of the cable can be effectively prevented from damage in the actual transportation and cable erection process, the use performance of the first flame-retardant layer and the second flame-retardant layer is ensured, the flame retardance characteristic of the cable itself can be ensured, and the service life of the cable is prolonged.

Description

technical field [0001] The invention relates to a cable, in particular to a flame-retardant cable. Background technique [0002] Flame-retardant power cables are used to transmit and distribute electric energy. They are often used in urban underground power grids, outgoing lines of power stations, internal power supplies of industrial and mining enterprises, and underwater transmission lines across rivers and seas. Flame-retardant power cables can be divided into oil-impregnated paper insulated power cables, plastic insulated power cables, and rubber insulated power cables according to their insulating materials. According to the voltage level, it can be divided into medium and low voltage power cables (35 kV and below), high voltage cables (above 110 kV), extra high voltage cables (275 ~ 800 kV) and extra high voltage cables (1000 kV and above). In addition, it can also be divided into AC cables and DC cables according to the current system. Due to the unreasonable design...

Claims

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Application Information

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IPC IPC(8): H01B7/18H01B7/295H01B9/00
Inventor 朱爱芜
Owner ANHUI XINGFU ELECTRIC APPLIANCES & CABLES
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