High-voltage pancake winding of transformer

Abstract

The application provides a high-voltage pancake winding of a transformer; the winding comprises a low-voltage coil 1, an insulating barrel 2, comb type supporting strips 3, filler strips 4 and high-voltage coils 5, the distance between the low-voltage coil 1 and the insulating barrel 2 is a, the insulating barrel 2 and the comb type supporting strips 3 are fixed, the high-voltage coils 5 are arranged on comb teeth of the comb type supporting strips 3, and one comb tooth is provided with a cake 51 of one high-voltage coil 5; multiple wire cakes 51 of the high-voltage coil 5 are arranged, the wire cakes 51 are connected in series to form the high-voltage coils 5, the distance between the high-voltage coil 5 and the insulating barrel 2 is b, filler strips 4 are added into the head wire cakes 51 and the tail wire cakes 51 of the high-voltage coils 5, andin a direction from the head end wire cake 51 to the middle wire cake 51 and a direction from the tail end wire cake 51 to the middle wire cake 51, the thicknesses of the added filler strips 4 are gradually reduced, so that the distance a between the low-voltage coil 1 and the insulating barrel 2 and the distance b between the high-voltage coil 5 and the insulating barrel 2 can be reduced, the size of an iron core of the transformer is reduced, and the no-load loss is reduced.

Description

technical field [0001] The invention relates to the technical field of thermoelectrochemical oxidation, in particular, the invention relates to a high-voltage cake winding of a transformer. Background technique [0002] The high-voltage pie winding of the transformer, because the high-voltage coil and the low-voltage coil are charged bodies, needs a certain insulation distance to operate, otherwise it will discharge. The insulation distance between the high-voltage coil and the low-voltage coil of the high-voltage cake winding of the traditional transformer is 35mm for the 10KV transformer and 50mm for the 35KV transformer. [0003] Because the insulation distance between the high-voltage coil and the low-voltage coil in the prior art is relatively large, the size of the iron core of the transformer is relatively large, resulting in relatively large no-load loss. [0004] In view of this, the present invention provides a high-voltage cake winding of a transformer, which red...

AI Technical Summary

Problems solved by technology

[0003] Due to the large insulation distance between the high-voltage coil and the low-voltage coil in the prior art, the iron core size of the transformer is large, resulting in a large no-load loss

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