Combined insulating barrel of transformer

Abstract

The invention discloses a combined insulating barrel of a transformer. The combined insulating barrel is in the shape of a straight prism, and the axis of the combined insulating barrel is enclosed by four rectangular insulating plates with electromagnetic shielding functions. The adjacent rectangular insulating plates are sequentially arranged in an end-to-end manner and are fixedly connected with one another by 'L'-shaped support strips, grooves are formed in mounting surfaces of each support strip, the mounting surfaces of the support strips correspond to the rectangular insulating plates connected with the support strips, and the side edges of the rectangular insulating plates are fixedly embedded in the grooves. Compared with the traditional structure formed at one step, the combined insulating barrel has the advantages that the combined insulating barrel is of a combined structure capable of being assembled and is short in manufacturing period, the sizes of the combined insulating barrel are easy to adjust, reliable electromagnetic shielding effects can be realized, radiating air channels can be naturally formed, and the like.

Description

technical field [0001] The invention relates to the technical field of power transformers, in particular to a combined transformer insulation cylinder. Background technique [0002] At present, in the transformer industry, with the development of science and technology, products with low loss and small size are more and more popular. Due to the high voltage level of the product, a large space is required for the insulation distance, and the small size means that an insulation tube must be passed to achieve the purpose of greatly reducing the insulation distance. Small-volume products can save materials to a great extent. [0003] Insulation cylinders are roughly classified into two types, one is an insulation cylinder with a circular cross section, and the other is an insulation cylinder with a rectangular cross section. Most of the insulating cylinders used at present are finished circular cross-section insulating cylinders made by manufacturers using existing molds. For...

AI Technical Summary

Problems solved by technology

"It can be seen that when it is necessary to use an insulating cylinder of a different size, it needs to be redesigned and manufactured. The production cycle is long and the steps are complicated.

[0006] The above two existing technologies show that the production of insulating cylinders is a one-time molding method, which has the problems of long production cycle and complicated production process.

[0007] In addition, the existing transformers have requirements for electromagnetic shielding at the same time, and the grounding shielding of the current transformer is to use a whole sheet of metal foil with the same height as the coil reactance to wind around the iron core or coil, which has a great impact on the heat dissipation, insulation and voltage resistance of the transformer. , process operation caused technical difficulty

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