Moulding for special transformer double-spiral winding and winding method

Abstract

A winding model of transformer winding comprises large flatbread model and small flatbread model with slots on outer diameter for both. The coil winding method includes fixing both said models, winding lead - out wire A on small model first, winding wire onto large model by transition wire A, winding coil top and botto section on large model, winding wire onto small model by tranmsition wire B, winding coil top and bottom section on small model to form lead - out wire B in parallel to lead - out wire A, tying up and fixing coil sections separately.

Description

technical field [0001] The invention belongs to the field of transformer manufacturing, and relates to a mold and a winding method for winding a transformer winding, in particular to a mold and a winding method for winding a double helix "8" coil of a special transformer. Background technique [0002] The winding is one of the main components of the transformer, the heart of the transformer, and the center of the transformer transformation and power transmission and distribution. In order to maintain the long-term safe and reliable operation of the transformer, the transformer winding must meet the basic requirements of electric strength, heat resistance strength and mechanical strength. [0003] The "8" winding is mainly used in special transformers such as rectifier transformers and electric furnace transformers. There are two winding methods for existing "8" windings: 1. roll into double cakes and arrange manually; 2. roll into two cakes of different sizes and weld the m...

AI Technical Summary

Problems solved by technology

Due to the small number of turns per coil and the large amount of springback, the tightly wound and bound transformer cannot guarantee the mechanical strength and short-circuit resistance after operation.

All of the above will bring safety hazards to the operation of the transformer after it is connected to the grid.

Images