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Power cable intermediate joint for cable damp repair

A technology for intermediate joints and power cables, which is used in cable installation, cable accessories, cable inlet sealing devices, etc., can solve the problems of consuming a lot of manpower, material and financial resources, and achieve the effect of avoiding bulging and improving quality and service life.

Pending Publication Date: 2022-03-01
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a power cable intermediate joint used for cable damp repair to solve the technical problem that repairing the power cable intermediate joint requires a lot of manpower, material resources and financial resources

Method used

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  • Power cable intermediate joint for cable damp repair
  • Power cable intermediate joint for cable damp repair

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Embodiment Construction

[0024] An embodiment of the present invention provides a power cable intermediate joint used for cable damp repair to solve the technical problem that repairing the power cable intermediate joint requires a lot of manpower, material resources, and financial resources.

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. A preferred embodiment of the invention is shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description...

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Abstract

The invention discloses a power cable intermediate joint for cable damp repair, a cable comprises an exposed conductive core and an external insulation layer, the intermediate joint comprises an external connector and an internal connector arranged in the external connector, the external connector is used for being electrically insulated from the outside, and the internal connector is used for being electrically connected with a first cable and a second cable; the inner connector comprises a port assembly, a connector body, a sealing piece, a liquid storage cavity and a conductive connecting piece. Wherein the port assembly is detachably connected to the connector body, the sealing piece is connected with the connector body and the port assembly, the liquid storage cavity arranged on the outer side of the conductive connecting piece is of a sealing structure connected with an outer insulating layer of the first cable and an outer insulating layer of the second cable, and the conductive connecting piece internally provided with a through hole is electrically connected with the conductive core. The exposed conductive parts of the two independent cables are wrapped by the liquid storage cavity of the inner connector, so that the fluid channel and the fluid storage chamber which can bear relatively atmospheric pressure are formed, and pressure type injection repair can be smoothly performed on the cables.

Description

technical field [0001] The invention relates to the technical field of power cable accessories, in particular to a power cable intermediate joint used for cable moisture repair. Background technique [0002] With the rapid development of urban construction, the application of power cables has also experienced a rapid growth. The power cable intermediate joint is a common cable accessory, which is used to realize the electrical connection of two independent cables, and has functions such as waterproof and insulation. A typical underground cable consists of inner and outer semiconducting layers, insulation, and copper or aluminum strands. Such underground cables have a service life of 20-40 years, which in some cases is shortened when water enters the cable and creates microscopic holes in the insulation. These micropores are distributed in the insulating layer in a tree shape, and their collection is usually called a water tree. In the presence of water and ions, etc., whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G15/196H02G15/013H02G15/00H01R31/06
CPCH02G15/196H02G15/013H02G15/003H01R31/06
Inventor 何嘉兴方健杨帆莫文雄
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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