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Title: Aerodynamic seals for rotary machine

An aerodynamic seal assembly for a rotary machine includes multiple sealing device segments disposed circumferentially intermediate to a stationary housing and a rotor. Each of the segments includes a shoe plate with a forward-shoe section and an aft-shoe section having multiple labyrinth teeth therebetween facing the rotor. The sealing device segment also includes multiple flexures connected to the shoe plate and to a top interface element, wherein the multiple flexures are configured to allow the high pressure fluid to occupy a forward cavity and the low pressure fluid to occupy an aft cavity. Further, the sealing device segments include a secondary seal attached to the top interface element at one first end and positioned about the flexures and the shoe plate at one second end.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
1237859
Assignee:
General Electric Company NETL
Patent Number(s):
9,255,642
Application Number:
13/542,780
Contract Number:
FC26-05NT42643
Resource Relation:
Patent File Date: 2012 Jul 06
Research Org:
General Electric Company, Niskayuna, NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 24 POWER TRANSMISSION AND DISTRIBUTION

Other works cited in this record:

Sealing means between relatively rotating parts
patent, August 1962

Hydrodynamic Foil Bearings
patent, May 1974

Modular compliant hydrodynamic bearing with overlapping bearing sheet
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Pressure balanced compliant seal device
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Thrust load compensating system for a compliant foil hydrodynamic fluid film thrust bearing
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High load capacity compliant foil hydrodynamic thrust bearing
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Compliant foil seal
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Turbine rotor-stator leaf seal and related method
patent, May 2003

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

Hydrodynamic foil face seal
patent, August 2007

Sealing device and method for turbomachinery
patent, October 2008

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