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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.
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Issue Date:
OSTI Identifier:
General Electric Company (Niskayuna, NY) NETL
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2013 Oct 03
Research Org:
General Electric Company, Niskayuna, NY (United States)
Sponsoring Org:
Country of Publication:
United States

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
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High load capacity compliant foil hydrodynamic journal bearing
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Compliant foil seal
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Seal carrier for a rotary machine and method of retrofitting
patent, December 2003

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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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