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Crosslinked polyethylene insulated multi-core flame retardant cable

A cross-linked polyethylene and flame-retardant cable technology, which is applied in the field of power cables, can solve problems such as easy core breakage and lower electrical performance of cables, and achieve good roundness, good flame-retardant effect, and good heat insulation performance.

Inactive Publication Date: 2016-08-31
WUXI NEW SUNSHINE CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, when the existing cables are easily squeezed and pressed during laying, the cores are easily broken, which greatly reduces the electrical performance of the cables.

Method used

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  • Crosslinked polyethylene insulated multi-core flame retardant cable

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Embodiment Construction

[0016] Such as figure 1 As shown, a cross-linked polyethylene insulated multi-core flame-retardant cable according to the present invention includes a cable core, and the cable core is composed of a ground wire and two insulated wire cores symmetrically arranged with the ground wire as the axis It is twisted in the shape of "one"; wherein, the ground wire is composed of a ground wire conductor 1 and a first cross-linked polyethylene insulating layer 2 with a thickness of 2-4 mm extruded outside the ground wire conductor; The insulated wire core is composed of an aluminum alloy conductor 3, a second cross-linked polyethylene insulating layer 4 with a thickness of 2-4 mm extruded outside the aluminum alloy conductor, and a second cross-linked polyethylene insulating layer with a thickness of 2-3cm of the second polyester tape 5; and the diameter of the ground wire conductor is 2.5 times the diameter of the aluminum alloy conductor.

[0017] There is an inorganic mineral oxygen ...

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Abstract

The invention discloses a crosslinked polyethylene insulated multi-core flame retardant cable, which comprises a cable core. The gap of the cable core is provided with an inorganic mineral oxygen barrier layer; the cable core is wrapped with a first polyester tape; a semi-conductive shielding layer is extruded outside the polyester tape; a steel strip armored layer is arranged outside the inner semi-conductive shielding layer; a rock wool heat insulation layer is extruded outside the steel strip armored layer; and the outermost layer of the cable is provided with a silica fireproof sleeve; the cable core is formed by stranding a ground wire and two insulated wire cores arranged symmetrically with the ground wire as an axial center in a horizontal mode; and the cable core is internally provided with a group of through holes symmetrically with the ground wire as the axial center. The crosslinked polyethylene insulated multi-core flame retardant cable has the advantages of good flame retardancy, high temperature resistance, good cooling performance, fire resistance, good insulated performance and the like.

Description

technical field [0001] The invention relates to the field of power cables, in particular to a cross-linked polyethylene insulated multi-core flame-retardant cable. Background technique [0002] XLPE insulated cables significantly improve the performance of PVC insulated cables. The long-term allowable operating temperature of XLPE insulated cables can reach 90°C. In order to maintain the elastic state at a temperature of 130°C. XLPE insulated cables are widely used because of their light weight, small diameter, convenient installation and laying, and simple accessory joints. However, XLPE insulated power cables are easily corroded or mechanically damaged during use, bitten by mice or eaten by insects and ants, thus affecting their power transmission; and most wires will produce a lot of highly toxic smoke when burned , causing significant loss of life and property, and bringing great difficulties to rescue work, especially when used in a relatively closed environment, suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/02H01B7/04H01B7/17H01B7/18H01B7/22H01B7/28H01B7/29H01B7/295H01B7/42
CPCH01B9/02H01B7/04H01B7/17H01B7/18H01B7/22H01B7/28H01B7/29H01B7/292H01B7/295H01B7/421
Inventor 董建深贺云芳刘永伟
Owner WUXI NEW SUNSHINE CABLE
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