a voltage transformer

Abstract

A voltage transformer comprises a seamless toroidal core, a secondary winding, an insulating layer, a shielding layer, an epoxy resin mixed adhesive layer, a coil bobbin and a primary winding which are sequentially wrapped. The winding method of the primary winding and the secondary winding includes: using a secondary numerical control winding machine for winding the secondary winding on the seamless toroidal core, sleeving the coil bobbin outside an integrity of the secondary winding, the insulating layer, the shielding layer and the epoxy resin mixed adhesive layer, and using a numerical control parallel winding machine for winding the primary winding, which is rectangular or in the shape of a two-level or three-level pagoda, on the coil bobbin. The seamless toroidal core is a hollow cylindrical core which is formed by curly winding of a cold-rolled grain oriented silicon steel strip and toroidal in section. By the adoption of the seamless toroidal core and an advanced winding process, size and weight of the core are reduced, and comprehensive performance of the transformer is improved; meanwhile, energy consumption is lowered, materials are saved, the process is simplified, and product quality is improved.

Description

technical field [0001] The invention relates to the field of voltage transformers, in particular to a voltage transformer using a ring-shaped iron core and a novel winding process. Background technique [0002] At present, in the transformer industry, most voltage transformers use "C"-shaped iron cores or laminated iron cores. Since such iron cores are cut iron cores with seams in the middle, this increases the loss of the iron core, thereby affect product performance. [0003] The disadvantage of the existing manual winding method is that the arrangement is uneven, the number of turns of each layer is inconsistent, and the degree of tightness is also different. Contents of the invention [0004] In order to solve the above-mentioned problems in the prior art, the present invention proposes a voltage transformer, which adopts a ring-shaped seamless iron core and advanced winding technology, so that the magnetic performance of the iron core has been greatly improved, there...

AI Technical Summary

Problems solved by technology

[0002] At present, in the transformer industry, most voltage transformers use "C"-shaped iron cores or laminated iron cores. Since such iron cores are cut iron cores with seams in the middle, this increases the loss of the iron core, thereby affect product performance

[0003] The disadvantage of the existing manual winding method is that the arrangement is uneven, the number of turns of each layer is inconsistent, and the degree of tightness is also different.

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