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US 4,263,476 AGranted
Insulation spacer for gas-insulated transmission line with improved outer rim structure
AssigneeElectric Power Research Institute, Inc.
InventorPhilip C. Netzel
Life of this patent
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Abstract
An insulation spacer for supporting a high voltage conductor within a flexible housing which is filled with electronegative gas has a central insulation hub and a concentric outer rim which are joined by a thin web. A plurality of tapered ribs extend from the outer rim to reinforce the outer rim against high loading forces and extend for approximately two-thirds of the radial thickness of the web and merge with the web. Ribs are placed at the latch and keeper areas of the halves of the insulator which are snapped together to form a single disk.
Claims8
A support insulator for a flexible gas-insulated cable;
- said support insulator comprising a molded plastic disk-shaped member having a cylindrical outer rim and a concentric cylindrical inner rim joined together by a relatively thin flat web;
- said outer rim being adapted to receive an outer flexible conductive housing;
- said inner rim being adapted to receive a conductor which is to be supported coaxially within said outer flexible housing;
- and a plurality of circumferentially spaced tapered reinforcing ribs disposed perpendicularly to said central web and extending symmetrically about either side of said central web;
- each of said reinforcing ribs tapering from said central web beginning at a radial distance from said inner rim which is about one-third of the distance between said inner and outer rims;
- and reinforcing ribs tapering gradually continuously outward to a dimension just less than the length of said cylindrical outer rim at the point where they join the interior surface of said outer rim.
3 more elements
Dependencies are inferred from the claim text.