End rings and tapping plate of transformer

Abstract

The invention provides end rings and a tapping plate of a transformer, and relates to a coil insulated and fastening structure of the transformer. The end rings (1) are arranged on the end part of a coil; the inside diameter and the outside diameter of the end ring (1) are the same as the size of the high pressure inside diameter and the high pressure outside diameter; a high pressure air passage (1-1) is arranged on the end part of the coil and cannot influence the radiation of the air passage; one side of each end ring is provided with an opening groove (1-2); convex strips (2-1) are arranged at two ends of the tapping plate (2) respectively; and the upper and lower convex strips (2-1) are clamped in the opening grooves (1-2) of the upper and lower end rings (1). The end rings and the tapping plate of the transformer can enhance the capability of resisting the lightening surge for the end part of the transformer, reduce the local discharge quantity and the insulated size of the end part, solve the problem of coil fastening, as well as improve the integral mechanical intensity of the transformer.

Description

Technical field: [0001] The invention relates to a transformer coil insulation and fastening structure. Background technique: [0002] At present, the end insulation of semi-encapsulated transformers uses air insulation or insulating materials as end insulation. This is only necessary end insulation, and a certain safety distance is required in the structure, which results in the safety of the coil and the iron yoke. As the distance increases, the overall size and weight of the transformer increases. In addition, the insulating end rings are placed horizontally on the upper and lower ends of the coil, resulting in low overall mechanical strength of the transformer. Invention content: [0003] The purpose of the present invention is to provide a transformer end ring and a branch plate, which can strengthen the anti-lightning impact ability of the transformer end, reduce the partial discharge, reduce the insulation size of the end, solve the problem of coil fastening, and i...

AI Technical Summary

Problems solved by technology

[0002] At present, the end insulation of semi-encapsulated transformers uses air insulation or insulating materials as end insulation. This is only necessary end insulation, and a certain safety distance is required in the structure, which results in the safety of the coil and the iron yoke. Increased distance increases the overall size and weight of the transformer

In addition, the insulating end rings are placed horizontally on the upper and lower ends of the coil, resulting in low overall mechanical strength of the transformer.

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