Built-in magnetic-shield transformer body pressing plate

A magnetic shielding and transformer technology, applied in the field of transformers, can solve problems such as accelerated insulation aging, reduced service life of transformers, overheating of electromagnetic wires, etc., and achieves the effects of reducing magnetic flux leakage, avoiding lateral magnetic flux leakage, and avoiding the influence of magnetic permeability

Active Publication Date: 2017-05-31
ZHENLAI XINYUAN COMPOSITE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Built-in magnetic-shield transformer body pressing plate
  • Built-in magnetic-shield transformer body pressing plate
  • Built-in magnetic-shield transformer body pressing plate

Examples

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Embodiment Construction

[0032] As shown in the figure, a body pressure plate of a built-in magnetic shielding transformer includes an upper pressure plate 1 , a wound magnetic shield 2 , a lower pressure plate 3 and high-strength nylon bolts 5 . The wound magnetic shield is welded with a grounding copper tape 4 . The upper pressure plate 1 and the lower pressure plate 3 are provided with a gap 7 for the outlet of the low-voltage winding.

[0033] The upper pressure plate 1 includes a grounding copper strip opening 6 , an oil guide hole 8 , an oil guide groove 9 , a low-voltage winding outlet notch 7 and a nylon bolt opening 10 . The upper pressing plate 1 is a ring structure, the inner and outer diameters are the same as the traditional structure transformer body pressing plate, the thickness is 10mm-20mm, and the material is laminated wood, laminated cardboard or hot-pressed polyester resin plastic laminate. The upper pressure plate is equipped with a grounding copper tape opening 6 for the groundi...

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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. , ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/34H01F27/36
CPCH01F27/34H01F27/36H01F2027/348
Inventor 王喜权郑国培颜伟嘉刘钢李丰田梁谦诚王刚胥颖群
Owner ZHENLAI XINYUAN COMPOSITE MATERIAL TECH
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