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Method for producing silicon rubber mutual inductor

A production method and technology of silicone rubber, applied in the field of transformers used outdoors, can solve problems such as application and popularization obstacles

Inactive Publication Date: 2009-01-07
刘辉南
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above factors have hindered the application and promotion of silicone rubber in high and medium voltage power transformers

Method used

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Embodiment Construction

[0012] The production method of the silicone rubber transformer according to the present invention has two aspects: coil winding and insulating layer pouring, wherein the insulating layer pouring includes two steps of epoxy resin pouring and silicone rubber pouring, wherein the epoxy resin pouring adopts full vacuum The casting process pours an epoxy resin insulation layer on the winding part of the transformer. The production process and steps are the same as the traditional epoxy resin transformer production method and will not be repeated here.

[0013] Silicone rubber casting is to pour a silicone rubber insulating layer on the non-winding part or the whole of the transformer. Silicone rubber casting includes the following steps

[0014] A) body pretreatment, for the part of the body and the outside of the coil that needs to be poured with silicone rubber, brush the surface active agent and coupling agent; perform as follows:

[0015] A1) Sandblast the material surface of ...

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Abstract

The present invention is production process of silicon rubber mutual inductor with the advantages of both epoxy resin and silicon rubber. The production process includes two steps, one vacuum epoxy resin casting step to form epoxy resin layer on the windings of mutual inductor and one silicon rubber casting step to form silicon rubber layer in all the non-winding parts of the mutual inductor. The silicon rubber casting includes pre-treatment of the mutual inductor and casting inside a vacuum casting apparatus.

Description

technical field [0001] The invention relates to a production method of an outdoor transformer, in particular to a production method of a silicon rubber transformer. Background technique [0002] Outdoor dry-type transformers are usually cast with outdoor epoxy resin. Epoxy resin has the characteristics of high strength and good insulation and sealing performance, but it also has the defects of easy cracks, aging, and poor anti-pollution flashover performance. With its excellent electrical properties, silicone rubber materials have been fully affirmed in the electric power industry, and have been widely promoted and applied. However, because it is a semiconductor, and the molding process requires high temperature and high pressure, it is limited to molds and equipment conditions. At present, it can only be applied to products with relatively simple shapes or relatively small volumes. For products with large volume and complex shape such as transformers, the investment in mol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C39/10B29C39/12B29C39/44B29C39/22B29K63/00B29K19/00
Inventor 刘辉南
Owner 刘辉南
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