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Installation technology of power cable aluminum alloy waterproof drawing head

A technology of power cable and installation technology, which is applied in the field of installation technology of aluminum alloy waterproof pulling head of power cable, which can solve the problems of affecting the quality of cable use, water ingress of high-voltage cables, cracking and falling off of lead seals, etc., so as to ensure the construction and use of cable laying Quality, avoid environmental pollution, good waterproof effect

Active Publication Date: 2015-01-21
ZHONGTIAN TECH SUBMARINE CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional single-core high-voltage cable pulling head is mostly made of steel, and the cable and the cable pulling head are connected together after melting lead or tin to achieve the purpose of sealing and pulling. Due to the corrugated aluminum sheath and The steel cable pulling head is composed of two different materials, which will cause the lead-sealed steel pulling head to not withstand excessive tension during use, otherwise the lead seal will crack and fall off; therefore, when there is water in the cable trench , it will cause water to enter the high-voltage cable, which will not only delay the construction period but also affect the quality of the cable

Method used

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  • Installation technology of power cable aluminum alloy waterproof drawing head
  • Installation technology of power cable aluminum alloy waterproof drawing head
  • Installation technology of power cable aluminum alloy waterproof drawing head

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Embodiment Construction

[0047] The installation process of the aluminum alloy waterproof pulling head of the power cable of the present invention comprises the following steps:

[0048] Step a: Cable puller end treatment

[0049] Properly adjust the cable reel according to the position of the cable end on the cable reel. When installing, the cable end and the pulling head should be installed in a horizontal position to ensure safe installation of the pulling head. Straighten the cable end, determine the delivery length of the cable, and use a vernier caliper to add 30 to 50 mm from the delivery cable length L as the cutting length L1, such as Figure 1a and Figure 1b shown. Use a utility knife to peel off the outer sheath of the cable with a cutting length of L1, and use a cloth strip dipped in acetone to clean the asphalt and other impurities on the surface of the aluminum sheath 2. When stripping the outer sheath, care should be taken not to damage the aluminum sheath 2 of the cable. Use a verni...

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Abstract

The invention discloses an installation technology of a power cable aluminum alloy waterproof drawing head. The installation technology is characterized by comprising the following steps: the end of the cable drawing head is processed; the drawing head is installed; confining pressure processing is carried out on the drawing head; a steel drawing head body is installed; a heat-shrinkable tubing is installed. Compared with a steel drawing head, an aluminum tube of the aluminum alloy drawing head and an aluminum jacket of the cable are more easily welded into a whole, an aluminum alloy welding welded joint can bear larger external force, the aluminum tube of the aluminum alloy drawing head allows the diameter changing scope of the aluminum jacket of the cable to be larger, the whole extrusion molding is adopted in the aluminum tube of the drawing head, strength is higher, organization is more compact, and the installation technology has the good waterproof and dampproof performance.

Description

technical field [0001] The invention relates to an installation process of an aluminum alloy waterproof traction head of a power cable, in particular to an installation process of an aluminum alloy waterproof traction head of a power cable with strong waterproof penetration capability. Background technique [0002] In the construction of high-voltage and ultra-high-voltage cable laying, most of the cables are laid by laying out the traction link leader. The leader of high-voltage and ultra-high-voltage power cables is a sealing sleeve installed at the end of the cable. The connecting body on the cable conductor; the cable is generally installed and laid in the cable trench. How to effectively prevent the cable from entering the water when it is laid in the cable trench is a problem that the cable manufacturer cannot solve for a long time. The traditional single-core high-voltage cable pulling head is mostly made of steel, and the cable and the cable pulling head are connecte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G9/06
Inventor 马健峰谢鹏程朱井华马志金薛建林夏云海
Owner ZHONGTIAN TECH SUBMARINE CABLE CO LTD
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