Method for enhancing insulativity and mechanical strength of high-tension coil of amorphous alloy transformer

Abstract

The invention relates to a method for enhancing the insulativity and mechanical strength of a high-tension coil of an amorphous alloy transformer, which comprises the following steps of: wrapping and fixing both ends of the lateral surface of a copper strip special for the transformer which is positioned on an outer layer of a low-tension winding by using rhombic lattice point gummed paper, winding the copper strip on an insulating layer of the rhombic lattice point gummed paper tightly, fixing the copper strip, and winding a layer of rhombic lattice point gummed paper outside the copper strip to perform layer insulation; performing coiling of a high-tension winding to press high-tension electromagnetic wires and the insulating layer of the rhombic lattice point gummed paper firmly, fixing the high-tension electromagnetic wires, and winding a layer of a widened insulating layer of the rhombic lattice point gummed paper on an outer layer of a first layer of high-tension electromagnetic wire; after continuing to wind a second layer of high-tension electromagnetic wire and a third layer of high-tension electromagnetic wire, turning over the widened part in the first layer of the insulating layer of the rhombic lattice point gummed paper along an end in an insulating mode, pressing and winding the widened part by a fourth layer of electromagnetic wire tightly, and fixing the rhombic lattice point gummed paper by using a glass fiber paper adhesive tape. Compared with the prior art, the method has the advantages of enhancing the insulativity and mechanical strength of the high-tension coil of the amorphous alloy transformer and the like.

Description

Technical field [0001] The invention relates to a transformer coil, in particular to a method for enhancing the insulation and mechanical strength of a high-voltage coil of an amorphous alloy transformer. Background technique [0002] Because the coils of amorphous alloy distribution transformers use the winding process of high-voltage coils winding low-voltage coils, there is a high potential difference between the high and low voltage coils during the operation of the transformer, which is prone to destructive results such as discharge and breakdown. [0003] In addition, since the entire coil is in a strong electric field during the operation of the transformer, under the action of electromotive force, the coil, especially the high-voltage coil with wire winding, is prone to loose deformation. Therefore, if there is no protective support at the end of the coil, the deformation and loosening of the coil, especially the high-voltage coil under the action of electromotive force, ma...

AI Technical Summary

Problems solved by technology

However, the traditional process fails to solve the problem that the coil, especially the wire-wound high-voltage coil, may loosen under the action of electromotive force.

[0005] In addition, the traditional process does not add additional reinforcement to the insulation layer between the high and low voltage coils, so the ability of the amorphous alloy transformer produced by the traditional process to withstand sudden short-circuit accidents still needs to be improved

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