An open-type three-dimensional wound core and a method for manufacturing a transformer using the same

Abstract

The invention discloses an open-type three-dimensional wound core and a method of manufacturing a transformer by using the same. The transformer comprises a coil and one or more core single frame, wherein each core single frame is formed by winding silicon steel sheets and comprises a core column for winding of the coil; an upper yoke part is formed at the top end of each core column and is provided with an interface; and the interface is arranged on the upper yoke part of each core single frame. The cut upper yoke part of each core single frame can be straightened along the corresponding core column through the interface and is conveniently sleeved with the wound coil, and the core single frame and the coil can be simultaneously wound, so that the production efficiency is improved; too many professional devices do not need to be input in the manufacturing process; the investment cost is reduced; and development and application of a three-dimensional wound core technology are effectively promoted.

Description

technical field [0001] The invention relates to a transformer, in particular to an open-type three-dimensional wound iron core and a method for manufacturing a transformer using the same. Background technique [0002] Most of the traditional three-dimensional wound cores of transformers are composed of three identical single-frame cores wound continuously with silicon steel sheets, which have the advantages of three-phase balance, low no-load loss, low no-load current, low noise and low cost. . But the defect of such a closed three-dimensional wound core structure is that the core must be wound first when manufacturing products, and then the coils must be wound on the core column, which makes it difficult to greatly improve the production efficiency; at the same time, with the three-dimensional wound core technology Widely used in large-capacity or high-voltage products, especially 35kV or 110kV and above products, both the iron core and coil are larger than the traditional...

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Problems solved by technology

But the defect of such a closed three-dimensional wound core structure is that the core must be wound first when manufacturing products, and then the coils must be wound on the core column, which makes it difficult to greatly improve the production efficiency; at the same time, with the three-dimensional wound core technology Widely used in large-capacity or high-voltage products, especially 35kV or 110kV and above products, both the iron core and coil are larger than the traditional three-dimensional wound core products, if it is still manufactured by this method, more investment must be made , Larger special equipment can meet the production requirements, and the huge investment makes the closed three-dimensional wound core technology limited by equipment or process and other factors, and cannot be widely used in products with large capacity or high voltage level, thus affecting the development of three-dimensional wound cores

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