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Fireproof insulated cable

A technology of insulating cables and insulating layers, which is applied to insulated cables, power cables, insulated conductors, etc., can solve the problems of poor electrical performance and safety performance of cables, and achieve the effects of good mechanical shock resistance, improved insulation performance, and good water spray performance.

Inactive Publication Date: 2015-01-21
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of poor electrical performance and safety performance of existing cables, the present invention provides a fireproof insulated cable

Method used

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  • Fireproof insulated cable

Examples

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Effect test

Embodiment 1

[0015] Such as figure 1 As shown, it is a fireproof insulated cable of this embodiment, which includes at least one conductor 1, the conductor 1 is covered with a first insulating layer 3, and the three conductors covered with the first insulating layer 3 are all covered In the ceramic short fiber layer 2, between the first insulating layer 3 and the first insulating layer 3 and between the first insulating layer 3 and the ceramic short fiber layer 2, magnesium oxide mineral insulating powder 4 is arranged, and the ceramic short fiber layer 2 Copper sheath 5, second insulating layer 6 and fireproof layer 7 are coated on the outside in turn; fireproof layer 7 is made of the following raw materials according to weight percentage: 40% inorganic base material, 30% environmentally friendly flame retardant, 20% organic polymer material and 10% fireproof pigment.

[0016] The ceramic short fiber layer is used to cover the wire. The ceramic short fiber material has good insulation pe...

Embodiment 2

[0020] A fireproof insulated cable of this embodiment differs from Embodiment 1 in that the fireproof layer 7 is made of the following raw materials by weight percentage: 50% inorganic base material, 20% environmentally friendly flame retardant, 20% organic polymer material and 10% fireproof pigment.

[0021] The organic polymer is halogen-containing resin, the first insulating layer 3 is braided by ceramic short fibers; the second insulating layer 6 is epoxy ester insulating varnish, and the fireproof pigment is aluminum pigment.

Embodiment 3

[0023] A fireproof insulated cable of this embodiment differs from Embodiment 1 in that: the fireproof layer 7 is made of the following raw materials by weight percentage, 30% inorganic base material, 35% environmentally friendly flame retardant, 30% organic polymer material and 5% fireproof pigment; the first insulating layer 3 is extruded from short ceramic fibers; the second insulating layer 6 is polyamide composite paint.

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Abstract

The invention relates to a cable, and discloses a fireproof insulated cable. The fireproof insulated cable comprises at least one conductor, each conductor is wrapped by a first insulated layer, the one or more conductors wrapped by the first insulated layers are wrapped by ceramic short fiber layers, magnesium oxide mineral substance insulated powder is arranged between the first insulated layers and between the insulated layers and the ceramic short fiber layers, and each ceramic short fiber layer is sequentially wrapped by a copper jacket, a second insulated layer and a fireproof layer; the fireproof layers comprise, by weight, 30%-50% of inorganic base stocks, 20%-40% of environment-friendly fire retardants, 10%-30% of organic polymer and 5%-10% of fireproof pigment. By means of the fireproof insulated cable, double-layer insulation is adopted, and the insulation performance of the cable is greatly improved; the fireproof layers are additionally arranged, and the safety performance of the cable is greatly improved.

Description

technical field [0001] The invention relates to a cable, in particular to a fireproof insulated cable. Background technique [0002] At present, the common copper core copper sheathed mineral insulated cables are equipped with an insulating layer, but the general insulating layer is equipped with mineral insulation, but the use of mineral insulation alone will cause poor electrical performance of the cable, and the withstand voltage level is low. As a result, electrical safety and applicability are poor. In addition, existing cables are seldom equipped with a fireproof layer, which is prone to spontaneous combustion in high-temperature environments, seriously affecting the safety performance of cables. Contents of the invention [0003] Aiming at the problem of poor electrical performance and safety performance of the existing cables, the invention provides a fireproof insulated cable. [0004] In order to solve the above technical problems, the present invention is solv...

Claims

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Application Information

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IPC IPC(8): H01B7/02H01B7/29H01B7/295H01B7/28H01B9/00
CPCY02A30/14
Inventor 谢成荣张仁愉尹志浩
Owner STATE GRID CORP OF CHINA
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