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Method for producing silicon rubber mutual inductor

A production method and technology of silicone rubber, applied in the field of production of silicone rubber outdoor transformers, can solve problems such as the application and promotion of silicone rubber

Inactive Publication Date: 2007-01-24
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 of the present invention includes coil winding and insulating layer casting. The insulating layer casting includes epoxy resin casting and silicone rubber casting. The epoxy resin casting adopts full vacuum. The casting process is to cast an epoxy resin insulating layer on the winding part of the transformer. The production process and steps are the same as the traditional production method of the epoxy resin transformer, and will not be repeated here.

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

[0014] A) Pretreatment of the body, for the parts of the body and the outside of the coil that need to be poured silicone rubber, apply surface activator and coupling agent; perform the following procedures:

[0015] A1) Sandblasting the surface of the material on the part of the...

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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 a transformer for outdoor use, in particular to a production method of a silicon rubber outdoor transformer. Background technique [0002] Outdoor dry-type transformers are usually made of outdoor epoxy resin. The epoxy resin has the characteristics of high strength and good insulation and sealing performance, but it also has the defects of cracking, easy aging, and poor anti-pollution flashover performance. Silicone rubber materials have been fully affirmed in the power industry for their excellent electrical properties, and have been widely promoted and applied. However, because it is semi-fluid, and the molding process requires high temperature and high pressure, it limits the conditions of molds and equipment, and can only be applied to products with relatively simple appearance or relatively small volume. For products with large volume and complex shapes such as transformers, the investment in molds and e...

Claims

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Application Information

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