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Title: Aerodynamic seals for rotary machine

Abstract

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:
; ; ;
Publication Date:
Research Org.:
GE Global Research, Niskayuna, New York (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1237859
Patent Number(s):
9,255,642
Application Number:
13/542,780
Assignee:
General Electric Company
DOE Contract Number:  
FC26-05NT42643
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Jul 06
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 24 POWER TRANSMISSION AND DISTRIBUTION

Citation Formats

Bidkar, Rahul Anil, Cirri, Massimiliano, Thatte, Azam Mihir, and Williams, John Robert. Aerodynamic seals for rotary machine. United States: N. p., 2016. Web.
Bidkar, Rahul Anil, Cirri, Massimiliano, Thatte, Azam Mihir, & Williams, John Robert. Aerodynamic seals for rotary machine. United States.
Bidkar, Rahul Anil, Cirri, Massimiliano, Thatte, Azam Mihir, and Williams, John Robert. 2016. "Aerodynamic seals for rotary machine". United States. https://www.osti.gov/servlets/purl/1237859.
@article{osti_1237859,
title = {Aerodynamic seals for rotary machine},
author = {Bidkar, Rahul Anil and Cirri, Massimiliano and Thatte, Azam Mihir and Williams, John Robert},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/1237859}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 09 00:00:00 EST 2016},
month = {Tue Feb 09 00:00:00 EST 2016}
}

Works referenced in this record:

A Bi-Directional Gas Face Seal
journal, January 1992


Hydrodynamic Foil Bearings
patent, May 1974


Pressure balanced compliant seal device
patent, December 1994


Compliant foil seal
patent, January 2003


Turbine rotor-stator leaf seal and related method
patent, March 2003


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


Seal assembly
patent, June 2004


Hydrodynamic foil face seal
patent, August 2007


Sealing device and method for turbomachinery
patent, October 2008


Air riding seal
patent, December 2011


Aerodynamic seal assemblies for turbo-machinery
patent, September 2015


Aerodynamic Seals for Rotary Machine
patent-application, January 2014


Film Riding Seals for Rotary Machines
patent-application, March 2014


Pressure Actuated Film Riding Seals for Turbo Machinery
patent-application, May 2014


Film Riding Aerodynamic Seals for Rotary Engines
patent-application, May 2014