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ELECTRICALLY HEATED BALANCE PISTON SEAL

United States Patent Application

20170022999
A1
View the Complete Application at the US Patent & Trademark Office
A balance piston seal assembly for a balance piston of a compressor is provided. The balance piston seal assembly may include a balance piston seal configured to be disposed about the balance piston such that an inner radial surface of the balance piston seal and an outer radial surface of the balance piston define a radial clearance therebetween. The balance piston seal assembly may also include a plurality of heaters in thermal communication with the balance piston seal and configured to heat and thermally expand the balance piston seal and thereby increase a radial length of the radial clearance.
Peer, David J. (Olean, NY), Brown, Paul Morrison (Seattle, WA), Wiederien, Richard J. (Bellevue, WA), Lupkes, Kirk Ryan (Renton, WA), Massey, Brian David (Seattle, WA), Sorokes, James M. (Olean, NY), Kuzdzal, Mark J. (Allegany, NY)
DRESSER-RAND COMPANY (Olean NY)
15/ 072,723
March 17, 2016
STATEMENT OF GOVERNMENT INTEREST [0002] This invention was made with government support under Government Contract No. DOE-DE-FE0000493 awarded by the U.S. Department of Energy. The government has certain rights in the invention.