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Title: Pressure actuated film riding seals for turbo machinery

Abstract

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:
Research Org.:
General Electric Company, Niskayuna, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1212402
Patent Number(s):
9,115,810
Application Number:
14/045,083
Assignee:
General Electric Company (Niskayuna, NY)
DOE Contract Number:  
FC26-05NT42643
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Oct 03
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Bidkar, Rahul Anil, Thatte, Azam Mihir, Gibson, Nathan Evan McCurdy, and Giametta, Andrew Paul. Pressure actuated film riding seals for turbo machinery. United States: N. p., 2015. Web.
Bidkar, Rahul Anil, Thatte, Azam Mihir, Gibson, Nathan Evan McCurdy, & Giametta, Andrew Paul. Pressure actuated film riding seals for turbo machinery. United States.
Bidkar, Rahul Anil, Thatte, Azam Mihir, Gibson, Nathan Evan McCurdy, and Giametta, Andrew Paul. Tue . "Pressure actuated film riding seals for turbo machinery". United States. https://www.osti.gov/servlets/purl/1212402.
@article{osti_1212402,
title = {Pressure actuated film riding seals for turbo machinery},
author = {Bidkar, Rahul Anil and Thatte, Azam Mihir and Gibson, Nathan Evan McCurdy and Giametta, Andrew Paul},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {8}
}

Patent:

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Works referenced in this record:

Hydrodynamic foil face seal
patent, August 2007


A Bi-Directional Gas Face Seal
journal, January 1992


Numerical Simulation and Characteristics Analysis of the Turbine Shaft End Spiral Groove Mechanical Seal
conference, July 2012

  • Ya, Zheng; Ying, Wang; Yiping, Dai
  • 2012 Third International Conference on Digital Manufacturing and Automation (ICDMA), 2012 Third International Conference on Digital Manufacturing & Automation
  • DOI: 10.1109/ICDMA.2012.132

Influence of Rotor Axial Shifting and Clearance on Leakage in Stepped Seal in Steam Turbines
conference, March 2010


Influence of Tooth Position and Clearances on Leakage in Labyrinth Seal in Turbine
conference, March 2011

  • Zhang, Meng; Wang, Xiaofang; Liu, Yan
  • 2011 Asia-Pacific Power and Energy Engineering Conference (APPEEC)
  • DOI: 10.1109/APPEEC.2011.5748948