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Improved cable lead coating method

A technology for cables and cable sheaths, which is applied to equipment for connecting/terminating cables, etc. It can solve the problem of reducing the heating and preheating area and time of lead filling, large heating and preheating area, and low efficiency of staff. problems, to achieve the effect of reducing the technical requirements of lead enamel process, improving quality and avoiding excessive heating time

Active Publication Date: 2020-03-06
GUANGDONG POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the traditional cable lead-filling method, the staff need to carry out lead-filling on both the cable intermediate joint and the cable sheath at the same time. The heating and preheating area is large and the time is long, which requires high technical requirements for the staff. Due to the disadvantage of low efficiency, the present invention proposes an improved cable lead-filling method, which reduces the heating and preheating area and preheating time of lead-filling, thereby improving the quality of lead-filling and the life of the cable intermediate joint

Method used

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Embodiment 1

[0037] Such as figure 1 The schematic flow sheet of the improved method for lead enamel proposed by the present invention shown, a kind of improved method for cable enamel lead, comprises the following steps:

[0038] S1. Fix the lead-filled mold 1 on the top of the cable sheath, and the structure diagram of the lead-filled mold 1 fixed on the top of the cable sheath 2 is as follows figure 2 As shown, the lead-filled mold 1 is in the shape of a tube with a thick middle and thin ends, which facilitates the insertion of one end of the middle joint of the cable into the cavity of the subsequently formed lead-filled pipe body, and further facilitates the welding of the heated lead-filled pipe body. On the middle joint of the cable, the thick shape in the middle facilitates the subsequent deformation and relaxation of the lead-filled pipe body after being heated.

[0039] S2. Inject the lead-filling material in molten state into the lead-filling mold 1 at a constant speed along t...

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Abstract

The invention provides an improved cable lead coating method. The method comprises the following steps: fixing a lead pre-coating mold at the top end of a cable sheath; injecting a lead coating material in a molten state into the lead pre-coating mold at a constant speed along the port of the lead pre-coating mold; after the lead pre-coating pipe body is cooled, taking down the lead pre-coating mold; carrying out sawing to obtain a plurality of air fork openings; allowing one end of a cable intermediate joint to stretch into a pipe cavity of the lead coating pipe body, and knocking the top endof the lead coating pipe body by using a hammer, so that the top end is clamped with the outer side surface of the other end of the cable intermediate joint; and heating the lead coating pipe body. According to the invention, the defect is overcome that in a traditional cable lead coating method, a worker needs to conduct lead coating on the cable intermediate joint and the cable sheath at the same time, so the requirement for the lead coating process technology of the worker is lowered, the working efficiency of the worker is improved, the lead coating completion quality is further improved,and the service life of the cable intermediate joint is further prolonged.

Description

technical field [0001] The invention relates to the technical field of cable lead-filling process, and more specifically, relates to an improved cable lead-filling method. Background technique [0002] With the development of society and economy, the scale of high-voltage cable lines continues to expand, and there are more and more connections between cable intermediate joints and cable sheaths. In order to prevent external moisture intrusion and ensure reliable electrical and mechanical connections between cable sheaths and intermediate joints , the lead enamel process has become a basic skill that power cable workers need to master, and the quality of the lead enamel process largely determines the service life of the cable intermediate joint. [0003] The traditional cable lead-filling method is done manually by cable accessories installation workers at the construction site, which has the following disadvantages: [0004] (1) The efficiency of the staff to fill the lead ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/14
CPCH02G1/14
Inventor 孙钦章林斌梁健明罗向源杨毅刘侃廖嘉伟刘宗岳辛镇泳徐爽许恒彬黄一婷胡壮丽沈观胜
Owner GUANGDONG POWER GRID CO LTD
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