Insulation structure of transformer coil and manufacturing method of insulation structure

Abstract

The invention discloses an insulation structure of a transformer coil and a manufacturing method of the insulation structure. The insulation structure is composed of end insulators, stays, paperboards, soft angle rings, insulation rings, dispensing paper, insulation end rings, and insulation rings. The insulation structure is characterized in that the stays, the paperboards, the dispensing paper, the soft angle rings and the stays are sequentially arranged between a low voltage coil and a high voltage coil, the high voltage coil is divided into an upper high voltage coil and a lower high voltage coil, a structure with the end insulators, the insulation rings, the soft angle rings, the insulation rings and the end insulators is arranged between the upper high voltage coil and the lower voltage coil, and the lower end of the lower high voltage coil and the upper end of the upper high voltage coil are sequentially provided with the end insulators, the insulation end rings and the soft angle rings. The main insulation distance between the high and low voltage coils can be reduced, so that the size of the product can be reduced, the cost can be reduced, and the market competitive capacity can be improved; the structure can be simplified, the processing difficulty can be reduced, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to an insulating structure of a transformer coil and a manufacturing method thereof. Background technique [0002] The coil insulation structure in the prior art is as Figure 5-7 As shown, the coil insulation structure adopts the packaging process, and the formation process is as follows: the high and low voltage coils are wound separately first. This kind of high-voltage coil winding needs to be completed on a separate winding mold. The specific process is: put the insulating sleeve on the winding mold, and put the upper and lower insulating end rings and upper insulating end rings on the two ends, and then put them on the outside of the insulating tube. Put corrugated cardboard on the surface, surround the cardboard, then wrap the corrugated cardboard, and put the cardboard, then wind the electrostatic screen, and at the same time wrap a piece of glued paper around the outer surface of the electrostatic screen, and then wind th...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the key technical problems such as the large insulation distance of the original structure of the transformer coil insulation in the product segment with a transformer capacity of 1600kVA and below, and the voltage combination is 35 / 0.4kV, and the interlayer voltage is high, and provides a transformer coil insulation structure and its Manufacturing method

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