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A new GIS CT design

IP.com Disclosure Number: IPCOM000244698D
Publication Date: 2016-Jan-06
Document File: 6 page(s) / 407K

Publishing Venue

The IP.com Prior Art Database

Related People

YongLiang Liang: AUTHOR [+3]

Abstract

Abstract of Invention: For epoxy casting GIS CT. Normally there is a sealing groove on the bottom of casting body of CT to avoid the leakage of SF6 from the tank. The sealing groove of the CT is casted by epoxy resin. Statement of problem: For epoxy casting process, it is high potential to have some defect on the surface of sealing groove, such as air bubble, shrinkage or others, if there is some defect, it could be the risk for the leakage of SF6. Novel features: The new design of sealing groove is made by machining, the material of sealing groove can be metal or insulation. And then casted in CT casting body. Business benefits: Good surface quality of the sealing groove by machining, reduce the scrap rate of surface quality issue. Description

This invention is related to a new design of epoxy casting GIS CT. Normally there is a sealing groove on the bottom of casting body of CT to avoid the leakage of SF6 from the tank. The sealing groove of the CT is casted by epoxy resin. For epoxy casting process, it is high potential to have some defect on the surface of sealing groove, such as air bubble, shrinkage, if there is some defect, it could be the risk for the leakage of SF6. The new design is that the sealing groove is made by machining and then casted in the CT body. The benefit of the new design is good surface quality of the sealing groove, reduce the scrap rate of surface quality issue.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 67% of the total text.

Page 01 of 6

PPMV CNTC PG-ITS 2015.08.28

New design of GIS CT

© ABB

September 2, 2015

| Slide 1


Page 02 of 6

Title: A new GIS CT design

Abstract of Invention:

       For epoxy casting GIS CT. Normally there is a sealing groove on the bottom of casting body of CT to avoid the leakage of SF6 from the tank. The sealing groove of the CT is casted by epoxy resin.

Statement of problem:

       For epoxy casting process, it is high potential to have some defect on the surface of sealing groove, such as air bubble, shrinkage or others, if there is some defect, it could be the risk for the leakage of SF6.

Novel features:

       The new design of sealing groove is made by machining, the material of sealing groove can be metal or insulation. And then casted in CT casting body.

Business benefits:

       Good surface quality of the sealing groove by machining, reduce the scrap rate of surface quality issue.

Description

       This invention is related to a new design of epoxy casting GIS CT. Normally there is a sealing groove on the bottom of casting body of CT to avoid the leakage of SF6 from the tank. The sealing groove of the CT is casted by epoxy resin. For epoxy casting process, it is high potential to have some defect on the surface of sealing groove, such as air bubble, shrinkage, if there is some defect, it could be the risk for the leakage of SF6. The new design is that the sealing groove is made by machining and then casted in the CT body. The benefit of the new design is good surface quality of the sealing groo...