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Cable terminal tail pipe and connecting process thereof

A cable termination and cable connection technology, applied in cable terminations, equipment for connecting/terminating cables, etc., can solve the problems of burns, fractures, and oxidation of the main insulation of the outer shield of the cable, so as to achieve a safe and simple installation process of accessories and reduce power loss. , the effect of saving labor

Active Publication Date: 2020-06-16
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the cable terminal tail pipe and its connection method in the prior art are prone to deleading, breakage, oxidation, etc., causing problems such as water ingress, di

Method used

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  • Cable terminal tail pipe and connecting process thereof
  • Cable terminal tail pipe and connecting process thereof
  • Cable terminal tail pipe and connecting process thereof

Examples

Experimental program
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Example Embodiment

[0023] Example 1

[0024] In such figure 1 In the shown embodiment 1, a cable terminal tail tube includes a tube body part and a fixed part. The tube body part is a copper-clad aluminum double-layer structure. The inner layer is made of aluminum material, and the outer layer is made of copper material. It includes a tapered tube 1 and a round tube 2. One end of the round tube is connected with the large-diameter end of the tapered tube, the other end of the round tube is connected with the fixed part, and the small-diameter end of the tapered tube is formed with an aluminum shield for connecting to the cable. The cable connection part 3 connected by the sleeve, the cable connection part is cylindrical, and its inner wall is provided with a spiral groove 4 that matches the outer peripheral surface of the aluminum sheath of the cable. The cross section of the spiral groove is arc-shaped and adjacent The spiral grooves are transitionally connected by arc-shaped edges; the fixed part...

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Abstract

The invention discloses a cable terminal tail pipe and a connecting process thereof. The cable terminal tail pipe comprises a conical pipe and a circular pipe; a cable connecting part connected with the metal sheath of a cable is formed at the small-caliber end of the conical pipe; the cable connecting part is cylindrical; and a spiral groove matched with the outer circumferential face of the metal sheath of the cable is formed in the inner wall of the cable connecting part. When the cable terminal tail pipe is used, the cable connecting part is in threaded connection with the metal sheath ofthe cable; and the end, far away from the conical pipe, of the cable connecting part, is fixed to the metal sheath of the cable through cold welding. With the cable terminal tail pipe and the connecting process thereof of the invention adopted, the problems of water inflow, discharge, heating and the like caused by the phenomena of de-leading, breakage, oxidation and the like easily occurring in acable terminal tail pipe and a connecting method thereof in the prior art, and the problem that cable outer shielding and even main insulation are burnt to a certain extent due to high temperature ina lead coating process in the prior art can be solved. The cable terminal tail pipe has very high practical value.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a cable terminal tailpipe and its connection process, which are used for 110kV XLPE insulated power cables (240mm 2 -1600mm 2 ) Installation of outdoor porcelain sleeves and composite casing terminals. Background technique [0002] The installation of cable accessories is one of the core processes of power cable lines. At present, the tail pipe assembly method in the installation process of high-voltage cable accessories is: the transition part between the end of the tail pipe and the metal sheath of the cable is circumferentially leaded to connect. Due to the difference in the lead filling level of the installers and the influence of environmental factors, the degree of fit between the tail pipe and the cable corrugated aluminum sheath and whether the lead seal is firm will vary, which may cause many defects during the installation of accessories. At the same time, due...

Claims

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Application Information

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IPC IPC(8): H02G15/06H02G15/04H02G1/14
CPCH02G1/14H02G15/04H02G15/06
Inventor 蒋理想李牧卢天白苏宇汪春萌吴虹沈红峰周咏槟都敏强孙永国王德法孙云峰魏泽民
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO
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