Integral heat shrinkable cable middle connector

Abstract

The invention discloses an integral heat shrinkable cable middle connector which comprises a conductor connecting pipe, a stress multiunit pipe, an inner insulating pipe, an outer insulating pipe, a semiconducting pipe and a sleeve multiunit pipe, wherein two ends of the conductor connecting pipe are respectively connected with the cores of two segments of cables; the stress multiunit pipe is coated outside the connection pipe, and the two ends of the stress multiunit pipe are respectively in lap joint with the insulation shielding layers of two segments of cables; the inner insulating pipe is coated outside the stress multiunit pipe; the outer insulating pipe is coated outside the stress multiunit pipe and the inner insulating pipe, and the two ends of the outer insulating pipe are respectively in lap joint with the insulation shielding layers of the two segments of cables; the semiconducting pipe is coated outside the outer insulating pipe, and the two ends of the semiconducting pipe are respectively in lap joint with copper shielding layers of the two segments of cables; and the sleeve multiunit pipe is coated outside the semiconducting pipe, and the two ends of the sleeve multiunit pipe are respectively in lap joint with the outer sleeves of the two segments of cables. Due to the adoption of the connector provided by the invention, the magnitude of partial discharge is reduced, sealing and insulating performance is strengthened. Moreover, the connector has the advantages of prolonged service life and simplicity in installation.

Description

technical field [0001] The invention relates to a cable accessory, in particular to an integrated heat-shrinkable cable intermediate joint. Background technique [0002] At present, due to the low price and strong environmental adaptability of heat shrinkable cable intermediate joints, it is widely used. Most of the heat-shrinkable cable intermediate joints on the market divide the sheath composite tube, semi-conductive tube, outer insulating tube, inner insulating tube and stress composite tube into two or more sections; especially the electrical stress control part All stress tubes are designed in 2~3 sections, and "pencil tips" are made at the insulating ends. The integrity of the cable itself is destroyed when the intermediate joint is made, and the joint becomes a weak position in the cable line, and most faults occur at the joint position. The segmented design makes the installation of the product extremely inconvenient; the cable insulation end must be cut into a "...

AI Technical Summary

Problems solved by technology

The segmented design makes the installation of the product extremely inconvenient; the cable insulation end must be cut into a "pencil head" shape when making the intermediate joint, which is inconvenient to operate and difficult to control the partial discharge; the sealing effect is not very ideal, and it is easy to cause moisture or moisture Intrusion; the above seriously affects the service life of the intermediate joint, and at the same time, a large number of long-term partial discharges will eventually lead to the breakdown of the intermediate joint

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