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Extrusion-resistant and thermal-insulating type electrical power cable

A power cable and cable technology, which is applied in the direction of insulated cables, power cables with shielding layers/conductive layers, cables, etc., can solve the problems of increased design of power cables, poor structural stability, and poor compressive performance, and achieve Improved safety level, good extrusion resistance, and the effect of improving extrusion resistance

Inactive Publication Date: 2014-12-10
ANHUI HONGYI CABLE GROUP
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Existing power cables have problems of poor structural stability, poor compressive resistance, interference between conductors, and flammability, which adds a certain degree of difficulty to the design of power cables. Therefore, the safety level and service life of electrical lines , anti-interference and flame retardant issues have attracted more and more attention, and have become a comprehensive development direction of the cable industry

Method used

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  • Extrusion-resistant and thermal-insulating type electrical power cable
  • Extrusion-resistant and thermal-insulating type electrical power cable

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Embodiment Construction

[0012] Such as figure 1 , figure 2 as shown, figure 1 It is a schematic cross-sectional structure diagram of a pressure-resistant and heat-insulated power cable proposed by the present invention; figure 2 It is a schematic cross-sectional structure diagram of an elastic filler frame in a pressure-resistant and heat-insulated power cable proposed by the present invention.

[0013] refer to figure 1 , figure 2 , a pressure-resistant and heat-insulated power cable proposed by the present invention, including a cable core composed of three first conductors 11, six second conductors 12 and an elastic filler frame 2, the elastic filler frame 2 is arranged on the axis of the cable Each first conductor 11 is separated at the core, and the elastic filler frame 2 includes filler strips 21 with an olive-shaped cross section. The filler strips 21 are arranged radially along the cable and meet at the center of the cable core at one end. A thermal insulation coating 211 and a shield...

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Abstract

The invention discloses an extrusion-resistant and thermal-insulating electrical power cable, wherein an elastic packing support is arranged at the axes of the cable to respectively separate corresponding first conductors, the elastic packing support comprises packing strips with olivary sections, the packing strips are arranged along the radial direction of the cable, one ends of the packing strips are intersected at the center of the cable core, and a thermal-insulating coating and a shielding coating are sequentially arranged on the surface of each packing strip; two ends of each first conductor are respectively abutted against the packing strips on two sides of the same, second conductors are symmetrically arranged on two sides of the outer part of each first conductor, and two sides of each second conductor are respectively abutted against the corresponding packing strip and the corresponding first conductor; the cable core is sequentially covered with an inflame-retardant cloth wrapping layer, a timed copper tape wrapping shield layer and a polyvinyl chloride outer sheath layer; the outer ends of the first and second conductors are all abutted against the inflame-retardant cloth wrapping layer. The extrusion-resistant and thermal-insulating electrical power cable is simple in structure, good in extrusion resistance, improved in safety level of an electrical circuit and prolonged in service life.

Description

technical field [0001] The invention relates to the technical field of wires and cables, in particular to a pressure-resistant and heat-insulated power cable. Background technique [0002] Power cables are used for the transmission of strong electric energy in transmission, distribution, transmission, transformation, and power supply lines. The current passing through them is large (between tens of amperes and thousands of amperes), and the voltage is high (220V to 5000kV and above). Power cables are divided into several varieties according to their scope of use, structural characteristics and performance requirements. Power cables are one of them. Power cables are mainly laid indoors, in tunnels and in pipelines, and can also be buried in the ground. Laying. Existing power cables have problems of poor structural stability, poor compressive resistance, interference between conductors, and flammability, which adds a certain degree of difficulty to the design of power cables....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/02H01B7/22H01B7/29
Inventor 吴本长
Owner ANHUI HONGYI CABLE GROUP
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