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Friction welding process for power cable intermediate joint conductor

A technology of friction welding and intermediate joints, which is applied in the direction of welding/welding connections, circuits, connections, etc. It can solve problems that affect the safety and stable operation of the power system, uneven quality of construction personnel, and excessive contact resistance of joints, etc., to avoid Joint quality problems, high construction efficiency, and the effect of reducing contact resistance

Inactive Publication Date: 2021-07-23
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the uneven quality of construction personnel, it is easy to cause problems such as excessive contact resistance of joints, which in turn affects the safe and stable operation of the power system

Method used

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  • Friction welding process for power cable intermediate joint conductor
  • Friction welding process for power cable intermediate joint conductor
  • Friction welding process for power cable intermediate joint conductor

Examples

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Embodiment Construction

[0027] The application will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present application.

[0028] A friction welding process for a power cable intermediate joint conductor of the present invention comprises the following steps:

[0029] S1: Pretreatment of the wires to be connected: peel off the wire insulation layer 1 at the end of the wire 2 to be connected to expose the metal material of the wire 2 to be connected, and then use the metal ring 3 to tighten the end of the wire 2 to be connected by crimping. Solid treatment;

[0030] S2: fixing the wires to be connected: fixing the wires 2 to be connected to the wire clamping and upsetting device 7 of the friction welding device 6, so that the wires to be connected 2 can move along with the wires clamping and upsetting device 7;

[003...

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Abstract

The invention provides a friction welding process of a power cable intermediate joint conductor. The process comprises the following steps: stripping an insulating layer at the end of a to-be-connected wire, and fastening the end of the to-be-connected wire through a metal ring; fixing the to-be-connected wire to a wire clamping and upsetting device of a friction welding device, so that the to-be-connected wire can move along with the wire clamping and upsetting device; fixing the metal rod to the metal rod clamping and rotating device of the friction welding device, so that the metal rod can rotate at a high speed along with the metal rod clamping and rotating device; and performing friction welding on the to-be-connected wire and the high-speed rotating metal rod to form a joint conductor so as to complete connection of the intermediate joint conductor of the power cable. The method has the advantages of simple process operation, high construction efficiency, high dimensional precision, stable welding quality and the like; and compared with a crimping process, the method has the advantages that the formed joint is intermolecular connection, the contact resistance is effectively reduced, the joint strength is improved, and the hidden dangers of heating, loosening and the like at the joint are avoided.

Description

technical field [0001] The invention relates to a connection process of electric cables, in particular to a friction welding process for conductors of intermediate joints of electric cables. Background technique [0002] In recent years, power cables have been widely used in power transmission and transformation projects due to their small footprint, high reliability, and small maintenance workload. [0003] Restricted by supply length and construction requirements, intermediate joints are widely used in construction, and are usually made by construction personnel on site through mechanical cold-pressing technology. This process requires the use of corresponding connecting tubes and crimping dies, and the pressure of crimping pliers is used to press the connecting tube tightly on the wire core to form a conductive path. However, due to the uneven quality of construction personnel, it is easy to cause problems such as excessive contact resistance of joints, which in turn aff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R43/02
CPCH01R43/0207H01R43/0263
Inventor 吴明孝杨威付刚李雪桓王震宇杨涛吕中宾周少珍赵书杰杨晓辉王吉高超
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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