Intermediate joint of high-voltage cables

Abstract

The invention discloses an intermediate joint of high-voltage cables, comprising a cable sheath (1), a cable core (2) and a joint body (3). The joint body (3) corresponds to the cable core (2) and is arranged in the cable sheath (1); the outer side of the cable sheath (1) is provided with a protection box (4); a pouring sealant layer (5) for sealing is arranged between the cable sheath (1) and the joint body (3); and the outer side of the joint body (3) is provided with a sealant strip (6) which is used for sealing the gap between the end part of the cable sheath (1) and the cable core (2). Due to the arrangement of the protection box and the ethylene, propylene and non-conjugated diene rubber expanded sealant strip for sealing, the sealing effect of the cable joint can be guaranteed. The intermediate joint of the high-voltage cables can be used in the underwater or harsh operating environment, and water can not enter the intermediate joint so that the reliable operating of the cables is guaranteed. Due to the arrangement of an energy release hole, the intermediate joint of the high-voltage cables can release pressure towards the designated direction when exploding so that the damage to other facilities is avoided. In addition, the intermediate joint of the high-voltage cables has the characteristics of high operating safety and convenience in use.

Description

technical field [0001] The invention relates to the technical field of cable accessories, in particular to a high-voltage cable intermediate joint adopting a fully enclosed waterproof design and having explosion-proof and fire-proof functions. Background technique [0002] With the popularization of power cable engineering, the rate of cable accidents has also increased. A large number of facts have proved that most cable accidents are related to cable accessories, especially cable intermediate joints. In the existing cable intermediate joints, in order to prevent moisture from entering the intermediate joint, the waterproof tape is generally used to wrap the end of the joint body. There are still gaps between them, the sealing is poor, and moisture may enter through it, and there are still serious safety hazards in the use of power cables. Contents of the invention [0003] The object of the present invention is to address the defects of the prior art and provide a high...

AI Technical Summary

Problems solved by technology

In the existing cable intermediate joints, in order to prevent moisture from entering the intermediate joint, the waterproof tape is generally used to wrap the end of the joint body. There are still gaps between them, the sealing is poor, and moisture may enter through it, and there are still serious safety hazards in the use of power cables

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