Conducting rod assembly of ultrahigh-voltage outgoing line sleeve

Abstract

The invention relates to a conducting rod assembly of an ultrahigh-voltage outgoing line sleeve. The conducting rod assembly comprises a cover plate, a conducting tube and a plug; a cylindrical screw hole is machined at the center of the lower end surface of the cover plate, and the conducting tube is formed by welding two sections of conductor together; one end of the conducting tube is provided with thread, the other end of the conducting tube is integrally welded to the plug, and the threaded end of the conducting tube is screwed into the cylindrical screw hole at the center of the lower end surface of the cover plate; and the cover plate and the threaded end of the conducting tube are matched and then are welded. The conducting rod assembly can not only guide ultrahigh-voltage electric potential of an overhead line or a cable into a metal fully-sealed combined electric appliance, but also can ensure the characteristic of ultralow contact resistance by mechanical matching between the cover plate and the conducting tube. By a two-section welding process of the conducting tube, a machining process is simplified, and the requirements on machining devices and the operation costs of components are reduced. According to the design of the plug, the defect that an electrode of the ultrahigh-voltage outgoing line sleeve is broken through due to incomplete cleaning and residual metal scraps or suspended matters of the inner wall of the conducting tube is overcome.

Description

technical field [0001] The invention relates to a conductive rod, in particular to a conductive rod assembly of an ultra-high voltage outlet bushing which is tailor-welded in the middle and has low contact resistance characteristics. Background technique [0002] At present, the main function of the ultra-high voltage outlet bushing is to introduce the ultra-high voltage potential (above 550kV) of the overhead line or cable into the metal fully enclosed combined electrical equipment (GIS), so as to complete the opening, closing, and opening of the ultra-high voltage transmission line. isolation etc. The main part of the ultra-high voltage outlet bushing - the contact resistance characteristic of the conductive rod assembly is one of the important characteristics of the ultra-high voltage outlet bushing. The main reason is that the outlet bushing is filled with SF6 (sulfur hexafluoride inert gas) gas. If the contact resistance of the conductive rod assembly placed in SF6 gas...

AI Technical Summary

Problems solved by technology

The conductive rod assembly can not only effectively introduce the ultra-high voltage potential (above 550kV) of overhead lines or cables into the metal fully enclosed combined electrical equipment (GIS), but also use the mechanical cooperation between the cover plate and the conductive tube to ensure that the conductive rod assembly has The characteristics of very low contact resistance, the conductive tube is made of two sections of conductors, which simplifies the processing technology, reduces the requirements for processing equipment and the cost of parts transfer; and the plug design of the present invention completely overcomes the difficulty in cleaning the inner wall of the conductive tube. Thorough, residual metal debris or suspended matter, leading to defects in the electrode breakdown of the ultra-high voltage outlet bushing

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