Built-in magnetic-shield transformer body pressing plate

Abstract

The invention discloses a built-in magnetic-shield transformer body pressing plate and belongs to the technical field of transformers. The built-in magnetic-shield transformer body pressing plate comprises an upper pressing plate body, a winding type magnetic shield, a lower pressing plate body and high-intensity nylon bolts. The winding type magnetic shield is embedded in the pressing plate, full coverage of the entire winding is realized, shortcomings about partial overheating of an electromagnetic wire at the end of the winding, accelerated insulated aging and reduction of service life of a transformer caused by increasing of transverse magnetic flux leakage of a traditional-structure magnetic shield are overcome, and meanwhile, mounting dimensional, fit dimension with other transformer body parts, electrical performance and mechanical performance of the transformer body pressing plate are unaffected.

Description

technical field [0001] The invention belongs to the technical field of transformers, and in particular relates to a body pressure plate of a built-in magnetic shielding transformer. Background technique [0002] Transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. It can be divided into power transformers and special transformers according to the purpose. With the development of the economy and the continuous progress of science and technology, the continuous application of new materials and new processes, the transformer has been greatly improved in terms of voltage level and capacity. As the capacity of the transformer increases, the rated current of the transformer increases. When the transformer is running, a magnetic field will be generated after the winding passes through the current. Because the iron core of the transformer is made of cold-rolled oriented silicon steel sheet, it has excellent magnetic permeability. , ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to provide a built-in magnetic shield transformer body pressure plate, the magnetic shield is built into the pressure plate to solve the local overheating of the electromagnetic wire at the end of the winding due to the increase of lateral magnetic flux leakage caused by the traditional magnetic shield , Accelerate the insulation aging and reduce the service life of the transformer. At the same time, it does not affect the installation size of the transformer body pressure plate, the matching size with other parts of the transformer body, electrical performance and mechanical performance.

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