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Title: Pressure actuated film riding seals for turbo machinery

A seal assembly for a rotary machine is provided. The seal assembly includes multiple sealing device segments disposed circumferentially intermediate to a stationary housing and a rotor. Each of the sealing device segments includes a stator interface element, a shoe plate having an extended portion having one or more labyrinth teeth facing the rotor and a load bearing portion, wherein the shoe plate is configured to generate an aerodynamic force between the shoe plate and the rotor. The sealing device segment further includes a secondary seal configured to be in contact with the stator interface element at a radially outer end and configured to be in contact with an elevated nose section of the extended portion of the shoe plate on a radially inner end; and multiple flexible elements attached to the shoe plate and to the stator interface element.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
1212402
Assignee:
General Electric Company (Niskayuna, NY) NETL
Patent Number(s):
9,115,810
Application Number:
14/045,083
Contract Number:
FC26-05NT42643
Resource Relation:
Patent File Date: 2013 Oct 03
Research Org:
General Electric Company, Niskayuna, NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Other works cited in this record:

Compliant finer seal
patent, March 1992

Pressure balanced compliant seal device
patent, December 1994

Compliant foil hydrodynamic fluid film radial bearing
patent, June 1995

Compliant pressure balanced seal apparatus
patent, May 1997

High load capacity compliant foil hydrodynamic journal bearing
patent, May 1999

Compliant foil seal
patent, January 2003

Seal carrier for a rotary machine and method of retrofitting
patent, December 2003

Noncontacting finger seal
patent, November 2004

Hydrodynamic foil face seal
patent, August 2007

Compliant foil fluid film radial bearing or seal
patent, November 2009

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