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Protective sleeve of buried-type medium-voltage power cable

A technology for power cables and sheathing tubes, which is applied in the field of buried medium-voltage power cable sheathing tubes, which can solve the problems of cable service life reduction, easy breakage, and cable damage due to gnawing, and achieve long service life and high strength , the effect of overcoming fatal flaws

Inactive Publication Date: 2014-05-07
CHANGZHOU TUOYUAN CABLE ASSEMBLY
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] Buried medium-voltage power cables are mainly laid inside the trenches. The plane of the trenches is not very neat, so that the cables will be bent and easily broken after a long time. At the same time, there are often rat ants in the trenches, and the cables may Will be gnawed and damaged, reducing the service life of the cable

Method used

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  • Protective sleeve of buried-type medium-voltage power cable

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Embodiment Construction

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] Embodiments of the invention include:

[0016] A buried medium-voltage power cable sheathing tube, comprising: a sheathing tube 5 and a threaded tube 1, the sheathing tube 5 and the threaded tube 1 are integrally connected, the outer wall of the threaded tube 1 is a threaded structure, and the The material of the sheath pipe 5 and the threaded pipe 1 is rigid polyvinyl chloride, the surface of the sheath pipe 5 is provided with a reinforcement layer 3, and the two sides of the reinforcement layer 3 are respect...

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Abstract

The invention discloses a protective sleeve of a buried-type medium-voltage power cable which includes a protective sleeve and a threaded pipe. The protective sleeve and the threaded pipe are integrally connected. The material of the protective sleeve and the threaded pipe is a hard polyvinyl chloride. A reinforcement layer is arranged on the surface of the protective sleeve. Two faces of the reinforcement layer are connected with an inflaming retarding layer and a wear resistant layer respectively. Through the above-mentioned method, the protective sleeve of the buried-type medium-voltage power cable undergoes high-temperature extrusion and sizing through a plastic extruder and has the properties of being corrosion resistant, high in strength and high-temperature resistant and can withstand voltages below 2000V and overcomes critical defects of asbestos cement pipes and is mainly used for pipe laying for power cables of 26 / 35 kV and below.

Description

technical field [0001] The invention relates to the field of cables, in particular to a buried medium-voltage power cable sheathing tube. Background technique [0002] The sheath tube is a heat-shrinkable sleeve commonly used for insulation and protection on cables. The main material of this type of product is PE. After two processes of radiation cross-linking and heating expansion, it has the function of heat shrinkage. It can be used as heat-shrinkable inner sheath, outer sheath, and outer insulating waterproof sheath tube in cable accessories. [0003] Buried medium-voltage power cables are mainly laid inside the trenches. The plane of the trenches is not very neat, so that the cables will be bent and easily broken after a long time. At the same time, there are often rat ants in the trenches, and the cables may It will be damaged by gnawing, which will reduce the service life of the cable. Contents of the invention [0004] The technical problem mainly solved by the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G9/06
Inventor 周少琴
Owner CHANGZHOU TUOYUAN CABLE ASSEMBLY
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