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Title: Ambient air cooling arrangement having a pre-swirler for gas turbine engine blade cooling

Abstract

A gas turbine engine including: an ambient-air cooling circuit (10) having a cooling channel (26) disposed in a turbine blade (22) and in fluid communication with a source (12) of ambient air: and an pre-swirler (18), the pre-swirler having: an inner shroud (38); an outer shroud (56); and a plurality of guide vanes (42), each spanning from the inner shroud to the outer shroud. Circumferentially adjacent guide vanes (46, 48) define respective nozzles (44) there between. Forces created by a rotation of the turbine blade motivate ambient air through the cooling circuit. The pre-swirler is configured to impart swirl to ambient air drawn through the nozzles and to direct the swirled ambient air toward a base of the turbine blade. The end walls (50, 54) of the pre-swirler may be contoured.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
Siemens Energy, Inc., Orlando, FL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1167028
Patent Number(s):
8926267
Application Number:
13/766,909
Assignee:
Siemens Energy, Inc. (Orlando, FL)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
DOE Contract Number:  
FC26-05NT42644
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Feb 14
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Lee, Ching-Pang, Tham, Kok-Mun, Schroeder, Eric, Meeroff, Jamie, Miller, Jr., Samuel R, and Marra, John J. Ambient air cooling arrangement having a pre-swirler for gas turbine engine blade cooling. United States: N. p., 2015. Web.
Lee, Ching-Pang, Tham, Kok-Mun, Schroeder, Eric, Meeroff, Jamie, Miller, Jr., Samuel R, & Marra, John J. Ambient air cooling arrangement having a pre-swirler for gas turbine engine blade cooling. United States.
Lee, Ching-Pang, Tham, Kok-Mun, Schroeder, Eric, Meeroff, Jamie, Miller, Jr., Samuel R, and Marra, John J. Tue . "Ambient air cooling arrangement having a pre-swirler for gas turbine engine blade cooling". United States. https://www.osti.gov/servlets/purl/1167028.
@article{osti_1167028,
title = {Ambient air cooling arrangement having a pre-swirler for gas turbine engine blade cooling},
author = {Lee, Ching-Pang and Tham, Kok-Mun and Schroeder, Eric and Meeroff, Jamie and Miller, Jr., Samuel R and Marra, John J},
abstractNote = {A gas turbine engine including: an ambient-air cooling circuit (10) having a cooling channel (26) disposed in a turbine blade (22) and in fluid communication with a source (12) of ambient air: and an pre-swirler (18), the pre-swirler having: an inner shroud (38); an outer shroud (56); and a plurality of guide vanes (42), each spanning from the inner shroud to the outer shroud. Circumferentially adjacent guide vanes (46, 48) define respective nozzles (44) there between. Forces created by a rotation of the turbine blade motivate ambient air through the cooling circuit. The pre-swirler is configured to impart swirl to ambient air drawn through the nozzles and to direct the swirled ambient air toward a base of the turbine blade. The end walls (50, 54) of the pre-swirler may be contoured.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {1}
}

Works referenced in this record:

Circumferentially area ruled duct
patent, July 1987


Cooling flow side entry for cooled turbine blading
patent, July 1988


Turbine cooling air modulation
patent, February 1989


Gas turbine engine turbine
patent, November 1995


Turbine cooling flow modulation apparatus
patent, November 1996


Compressor outlet guide vane and diffuser assembly
patent, April 2003


Fluted compressor flowpath
patent, May 2003


Endwall shape for use in turbomachinery
patent, December 2003


Flow directing device
patent, November 2005


Crescentic ramp turbine stage
patent, May 2007


Axial compressor blading
patent, April 2008


Mounting arrangement for turbine blades
patent, March 2009


Turbine last stage blade with forced vortex driven cooling air
patent, March 2010


Wall configuration of axial-flow machine, and gas turbine engine
patent, April 2010


Flow control arrangement
patent, October 2010


Blade row for a rotary machine and method of fabricating same
patent, January 2011


Airfoil array with an endwall protrusion and components of the array
patent, February 2011


Systems and Methods for Supplying Cooling Air to a Gas Turbine
patent-application, January 2010


Low Pressure Cooling Seal System for a Gas Turbine Engine
patent-application, October 2012