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Title: Balance piston seal centering

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, a stationary support, and a gripping assembly disposed between the balance piston seal and the stationary support. The balance piston seal may be 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 stationary support may be configured to be coupled or integral with a casing of the compressor. The gripping assembly may be configured to secure the balance piston seal with the stationary support and to maintain concentricity between the balance piston seal and the balance piston during thermal radial expansion of the balance piston seal relative to the balance piston.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
1461507
Assignee:
Dresser-Rand Company (Olean, NY) NETL
Patent Number(s):
10,012,234
Application Number:
15/075,400
Contract Number:
FE0000493
Resource Relation:
Patent File Date: 2016 Mar 21
Research Org:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English