A transformer coil, its winding method and automatic winding machine

Abstract

The invention provides a transformer coil and a winding method thereof and an automatic winding machine. The transformer coil comprises lead wire layers, interlayer insulating layers positioned between every two adjacent lead wire layers and end part insulating layers, wherein the thicknesses of the interlayer insulating layers are increased along with the increase of the voltage gradient of the upper and lower adjacent lead wire layers. The transformer coil has the beneficial effects that an insulating paper band replaces a piece of whole insulating paper, so that automatic winding of lead wires and the insulating paper band is realized; furthermore, the thicknesses of the insulating layers are adjusted according to the voltage gradient between the adjacent lead wires, so that the prefabrication working time of an insulating material is shortened, the appearance size of the coil is reduced, the manufacturing cost of the coil is greatly lowered, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of winding equipment, in particular to a transformer coil, its winding method and an automatic winding machine for winding the transformer coil. Background technique [0002] The core of the power transformer is the coil of the transformer. Due to the large number of models and sizes of the coil of the transformer, the manufacturing of the coil generally adopts the manual winding of the horizontal winding machine in China. The interlayer insulation is artificially wrapped with several layers of cable paper with the same height as the coil, or artificially wrapped with segmented insulation. The wound transformer coil is as follows: figure 1 As mentioned, the thickness of the interlayer insulation is the same. The disadvantages of the transformer coil or winding method are as follows: 1. The coil winding production efficiency is low; 2. It is necessary to manually prefabricate the interlayer cable paper accor...

AI Technical Summary

Problems solved by technology

The disadvantages of the transformer coil or winding method are as follows: 1. The coil winding production efficiency is low; 2. It is necessary to manually prefabricate the interlayer cable paper according to the coil height, and the end insulation end ring must be manually prefabricated according to the coil size; 3. It cannot be layered The size of the interlayer voltage gradient places the number of layers of interlayer insulation, and the entire cable paper is used to wrap the waste material; 4. Due to the waste of coil insulation material and thickening of the insulation, the direction of the outer diameter of the coil becomes larger, further wasting the wire

To sum up, the current upper horizontal winding machine, automatic cable winding machine, etc. have a low degree of automation, and the waste of materials is serious. The transformer market in my country has a large capacity, which will cause a lot of waste every year.

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