Oil-immersed amorphous alloy core transformer

Abstract

The invention discloses an oil-immersed amorphous alloy core transformer, which comprises three coils, eight iron cores and a cover board, wherein insulating cylinders are arranged on the inner walls of the three coils; the top view of the three insulating sleeves is in a shape like a Chinese character 'tian'; the coils tightly wind the outer side surfaces of the insulating sleeves; a pressing strip is arranged at the middle part of the bottom surface of the cover board; the three coils are sequentially arranged; a gap is reserved between the adjacent coils; the gaps are reserved between the iron cores and the insulating sleeves; the gaps are also reserved between the adjacent iron cores; and the pressing strip of the cover board passes through the gap between the front and rear two rows of iron cores and is pressed at the middle parts of the three coils. The insulating cylinders are high in strength and do not deform; and the unexpected technical effect of reducing the heights of the iron cores is brought.

Description

technical field [0001] The invention relates to the iron core structure design and coil sealing technology of an oil-immersed amorphous alloy iron core transformer, in particular to an oil-immersed amorphous alloy iron core transformer. Background technique [0002] At present, oil-immersed amorphous alloy core transformers, such as figure 1 and image 3 As shown, the top view of the insulating cylinder b is in the shape of a square, four iron cores c pass through one insulating cylinder, and there are gaps between the four iron cores and the insulating cylinder. When the transformer is working normally, the coil a deforms and squeezes the insulating cylinder, and the insulating cylinder produces slight deformation, which does not affect the iron core. When a single-phase short circuit occurs in the transformer, the coil shrinks and squeezes the insulating cylinder, and the deformation of the insulating cylinder is large, and its stress is as follows: figure 2 As shown, ...

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Problems solved by technology

[0003] In order to solve the above technical problems, the thickness of the insulating cylinder is generally increased, but the increase in the thickness of the insulating cylinder leads to an increase in the inner diameter of the coil, an increase in the distance between the coils, and an increase in the inner diameter of the iron core. A series of problems such as increase and volume increase

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