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Perfusion structure of transformer

A transformer and magnetic core technology, applied in the field of transformers, can solve problems such as transformer inductance drop, and achieve the effects of improving efficiency, solving inductance drop, and reducing volume

Inactive Publication Date: 2012-09-19
WUXI JINGLEI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a filling structure of a transformer, which solves the problem of transformer inductance drop after filling under the premise of meeting the withstand voltage requirements of the transformer and not increasing the volume

Method used

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  • Perfusion structure of transformer
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Embodiment Construction

[0010] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0011] Such as figure 1 As shown, the present invention includes a magnetic core 1 and a casing 4, and the magnetic core 1 is installed in the casing 4 (the casing 4 is divided into an upper casing and a lower casing). A layer of silica gel layer 2 is coated on the surface of the magnetic core 1, which can reduce the influence of epoxy stress, and then the epoxy layer 3 is poured between the silica gel layer 2 and the shell 4 to increase the withstand voltage of the transformer. For the silica gel layer 2 coated in the present invention, it is better to select silica gel with lower fluidity.

[0012] After testing, the transformer adopting the structure of the present invention has only 30% drop in inductance, qualified withstand voltage, and can meet the performance requirements of the transformer.

[0013] What is described above is only...

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Abstract

The invention provides a perfusion structure of a transformer, comprising a magnetic core and a housing, wherein the magnetic core is mounted in the housing; the magnetic core is coated with a silica gel layer; and an epoxy layer is perfused between the silica gel layer and the housing. The perfusion structure of the transformer well solves the problem that inductance value of the transformer drops after perfusion by means of the mutual characteristics of the magnetic core, the silica gel and the epoxy layer; and therefore, the perfusion efficiency and yield are improved, the product cost is decreased and the product volume is reduced.

Description

technical field [0001] The invention relates to a transformer, in particular to a perfusion structure of a magnetic core type transformer. Background technique [0002] In recent years, transformers have been widely used in various fields, especially perfusion voltage transformers working in some special environments have higher requirements for withstand voltage and inductance drop. For example, in some special occasions, the withstand voltage between the windings of the transformer is required to be greater than 10KV, and the inductance of the transformer will not change by more than 40% after filling. [0003] At present, transformers infused with traditional silica gel have qualified inductance after infusion, but cannot withstand voltage and do not meet the technical requirements. Epoxy is used for perfusion, and the withstand voltage is qualified after perfusion, but the inductance drops as high as 66%, which does not meet the technical requirements. In order to prev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/26H01F41/02
Inventor 沈大卫刘宇蓝
Owner WUXI JINGLEI ELECTRONICS
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