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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:
; ; ;
Issue Date:
Research Org.:
GE Global Research, Niskayuna, New York (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1237859
Patent Number(s):
9255642
Application Number:
13/542,780
Assignee:
General Electric Company
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16J - PISTONS {
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
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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.
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Bidkar, Rahul Anil, Cirri, Massimiliano, Thatte, Azam Mihir, & Williams, John Robert. Aerodynamic seals for rotary machine. United States.
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Bidkar, Rahul Anil, Cirri, Massimiliano, Thatte, Azam Mihir, and Williams, John Robert. Tue . "Aerodynamic seals for rotary machine". United States. https://www.osti.gov/servlets/purl/1237859.
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@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 = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {2}
}
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Works referenced in this record:

A Bi-Directional Gas Face Seal
journal, January 1992

Hydrodynamic foil face seal
patent, August 2007

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