Transformer insulation lifting parts

Abstract

The present invention relates to an instrument transformer insulating lifting member, which is characterized in that an insulating lifting column and a metal connection plate are connected to form the instrument transformer insulating lifting member, wherein one end of the metal connection plate presents a cone shape and is positioned inside the insulating lifting column, the cone-shaped top end of the metal connection plate is provided with a steel bead, and the insulating lifting column periphery wall corresponding to the steel bead is provided with shielding members for tip shielding. The instrument transformer insulating lifting member has characteristics of simple structure, reliable performance and easy use. According to the present invention, the steel bead is arranged on the cone-shaped end portion of the metal connection plate, and the guide tank and the shielding springs are arranged on the insulating lifting column opposite to the steel bead so as to improve electric field distribution, completely eliminate tip discharge caused by excessive electric field concentration, reduce local discharge, completely meet lifting assembly and high voltage level use requirements of products, and improve electrical properties of voltage instrument transformers.

Description

technical field [0001] The invention relates to a transformer component, in particular to an insulating lifting component for hoisting and assembling a transformer. Background technique [0002] In the production process of transformers that need to be hoisted and assembled, the hoisting parts are usually made of phenolic cardboard or high-density board, and the transformer core and winding are suspended and assembled, and the phenolic cardboard or high-density board is used as the insulating medium. The dielectric constant of the insulating medium is inconsistent, and the combination is unreliable. In addition, the geometry of the hoisting parts cannot completely shield the high-voltage electric field, which leads to uneven distribution of electric field intensity, which easily leads to unstable electrical performance, especially when the partial discharge level is difficult. Meet the requirements of national standards. With the development of transformers in the direction...

AI Technical Summary

Problems solved by technology

[0002] In the production process of transformers that need to be hoisted and assembled, the hoisting parts are usually made of phenolic cardboard or high-density board, and the transformer core and winding are suspended and assembled, and the phenolic cardboard or high-density board is used as the insulating medium. The dielectric constant of the insulating medium is inconsistent, and the combination is unreliable. In addition, the geometry of the hoisting parts cannot completely shield the high-voltage electric field, which leads to uneven distribution of electric field intensity, which easily leads to unstable electrical performance, especially when the partial discharge level is difficult. meet national standards

With the development of transformers in the direction of miniaturization and high voltage levels, the size of insulating hoisting parts is also reduced accordingly, and traditional insulating hoisting parts cannot meet the electrical performance requirements, which seriously affects the reliability of products

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