Silicon carbon doped insulated fire-resisting cable and preparation method thereof

A fire-resistant cable and silicon carbon technology, applied in the direction of insulated cables, cable/conductor manufacturing, insulated conductors, etc., can solve the problems of difficult to meet market demand, large capital investment, high equipment requirements, etc., to extend the effective use time, change The effect of simple production process and production process

Inactive Publication Date: 2017-08-29
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the refractory layer and insulating layer of ordinary fire-resistant cables are mostly made of fire-resistant fire-resistant cables such as magnesium oxide, magnesium hydroxide or mica tape winding. High, large capital investment, and poor waterproof, anti-collision and other functions, it is difficult to meet the needs of the market

Method used

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  • Silicon carbon doped insulated fire-resisting cable and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 As shown, in the doped insulated fire-resistant cable provided by the present invention, a cable inner core 1, a metal sheath 2, an insulating layer 3, a filling layer 4, a central filling layer 5, a first wrapping tape 6, a fire-resistant Layer 7, Second Tape 8, and Outer Sheath 9. The layers of the structure are tightly fitted, and the cross-section forms a concentric circle.

[0035] The inner core 1 of the cable is metal copper, aluminum alloy, multi-core copper stranded wire or multi-core aluminum stranded wire, and the length does not need to be limited.

[0036] The thickness of the insulating layer 3 is 1-2 mm, and the thickness of the refractory layer 7 is 2-3 mm.

[0037] Preferably, the material of the insulating layer 3 and the refractory layer 7 is a mixture of magnesium oxide, carbon-silicon composite, silicon dioxide, mica powder, and kaolin. It makes the insulating layer and refractory layer have a higher melting point, and it is not ...

Embodiment 2

[0052] A silicon-carbon-doped insulated fire-resistant cable, the inside of the cable is sequentially provided with four cable cores 1, a metal sheath 2, an insulating layer 3, a first tape 6, a fire-resistant layer 7, and a second The tape 8 and the outer sheath 9 are provided with a central filling layer 5 in the center of the four inner cores 1 .

[0053] Preferably, there is a silicone rubber filling layer 4 between the inner core 1 , the central filling layer 5 and the metal sheath 2 . Silicone rubber forms another filling layer between the metal inner core and the metal wrapping layer. In case of fire, this filling layer can form a ceramic structure, thereby preventing the heat generated by the flame from being transferred to the metal inner core and extending the effective life of the cable. Using time, it can also prevent moisture from contacting the inner core of the cable during fire extinguishing, and play an isolation role.

[0054] Preferably, the material of the...

Embodiment 3

[0071] A silicon-carbon-doped insulated fire-resistant cable, the inside of the cable is sequentially provided with four cable cores 1, a metal sheath 2, an insulating layer 3, a first tape 6, a fire-resistant layer 7, and a second The tape 8 and the outer sheath 9 are provided with a central filling layer 5 in the center of the four inner cores 1 .

[0072] Preferably, there is a silicone rubber filling layer 4 between the inner core 1 , the central filling layer 5 and the metal sheath 2 . Silicone rubber forms another filling layer between the metal inner core and the metal wrapping layer. In case of fire, this filling layer can form a ceramic structure, thereby preventing the heat generated by the flame from being transferred to the metal inner core and extending the effective life of the cable. Using time, it can also prevent moisture from contacting the inner core of the cable during fire extinguishing, and play an isolation role.

[0073] Preferably, the material of the...

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Abstract

The invention relates to a silicon carbon doped insulated fire-resisting cable and a preparation method thereof. Four cable cores, a metal sheath, an insulating layer, a first wrapping tape, a fire-resisting layer, a second wrapping tape and an outer sheath are sequentially arranged inside the cable from inside to outside; and center filling layers are arranged at the centers of the four inner cable cores. Silicon rubber filling layers are arranged among the inner cores, the center filling layer and the metal sheath. The center filling layer is made of glass fibers; and the metal sheath is made of metal aluminium. Flexibility of the cable is improved. The aluminium metal can be continuously extruded, so that the aluminium metal is an ideal metal sheath material of the flexible mineral insulated cable. The first wrapping tape and the second wrapping tape are respectively lapped outside the insulating layer and the fire-resisting layer without being twisted, and are both formed by lapping glass fibers. The fire-resisting cable disclosed by the invention is reasonable in structural design, low in manufacturing cost, simple in manufacturing process, stable in chemical performance, high in flexibility at the normal temperature and high in mechanical intensity at a high temperature, is not limited to a production length and is good in flame retardance and fire resistance.

Description

technical field [0001] The invention relates to the technical field of material production, in particular to a silicon-carbon-doped insulated fire-resistant cable and a preparation method thereof. Background technique [0002] At present, the refractory layer and insulating layer of ordinary fire-resistant cables are mostly made of magnesium oxide, magnesium hydroxide or mica tape winding and other fire-resistant fire-resistant cables. High, large capital investment, and poor waterproof, anti-collision and other functions, it is difficult to meet the needs of the market. Exploring cables with higher refractory temperature, simple production process and related specific functions has become a research hotspot in recent years. Contents of the invention [0003] The object of the present invention is to provide a silicon-carbon-doped insulated fire-resistant cable and a preparation method thereof, which can ensure the safe and smooth operation of electric power and communica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/17H01B7/29H01B7/22H01B7/28H01B7/295H01B5/10H01B3/28H01B3/08H01B13/24H01B13/26H01B13/02
CPCH01B7/17H01B3/08H01B3/28H01B5/105H01B7/22H01B7/28H01B7/29H01B7/295H01B13/02H01B13/24H01B13/26
Inventor 晏佳莹成凯张诺诺李玉姣李德江闫甲田杨发新
Owner CHINA THREE GORGES UNIV
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