Novel intermediate joint based on cable chilling contraction

Abstract

The invention discloses a novel intermediate joint based on cable chilling contraction. The novel intermediate joint comprises two cable conductors at the jointing position and a conductor connecting pipe used for connecting the cable conductors. An insulating layer wraps each cable conductor in a squeeze manner. An integral intermediate joint body of a chilling-contraction cable accessory is arranged outside the insulating layers. An integral armor layer is arranged outside the intermediate joint body of the chilling-contraction cable accessory. A shielding tile with the outer diameter identical to that of each insulating layer is arranged on the conductor connecting pipe. A conventional semiconductive-band wrapping layer is replaced by the shielding tile, so that the problem that a semiconductive band is brought into the insulating layers by friction between a supporting strip and the semiconductive band during pulling of the supporting strip to cause product breakdown during operation in the prior art is solved, and the problem that the semiconductive band has uneven viscidity, a twisted semiconductive band may be loosened during mounting to be brought into the insulating layers to cause product quality accidents in the prior art is also solved.

Description

[0001] technical field [0002] The invention belongs to the field of power cable joints, and in particular relates to a novel cable cold-shrinkable intermediate joint. Background technique [0003] At present, the connection of the intermediate joint conductors in the market is to use the conductor connecting tube to crimp the two separate cable conductors and connect them together. After the conductors are connected, wrap the semi-conductive tape on the outside of the connecting tube until it is flush with the insulation. Due to the uneven quality of the installers Uneven, when the support bar is pulled, the support bar rubs against the semi-conductive tape to bring the semi-conductive tape into the insulating layer, causing the product to break down during operation. In addition, the viscosity of the semi-conductive tape on the market is uneven. The conductive tape may be scattered during installation and brought into the insulation layer, resulting in product quality acc...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the purpose of this invention is to provide a new type of cable cold-shrinkable intermediate joint, which solves the problem that in the prior art when the support bar is pulled, the support bar and the semi-conductive tape will rub the semi-conductive tape into the insulating layer, causing the product to be in the insulation layer. The problem of breakdown during operation and the uneven viscosity of the semi-conductive tape in the prior art, the wound semi-conductive tape may be scattered during installation and brought into the insulating layer, resulting in product quality accidents

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