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Title: Turbine airfoil with ambient cooling system

Abstract

A turbine airfoil usable in a turbine engine and having at least one ambient air cooling system is disclosed. At least a portion of the cooling system may include one or more cooling channels configured to receive ambient air at about atmospheric pressure. The ambient air cooling system may have a tip static pressure to ambient pressure ratio of at least 0.5, and in at least one embodiment, may include a tip static pressure to ambient pressure ratio of between about 0.5 and about 3.0. The cooling system may also be configured such that an under root slot chamber in the root is large to minimize supply air velocity. One or more cooling channels of the ambient air cooling system may terminate at an outlet at the tip such that the outlet is aligned with inner surfaces forming the at least one cooling channel in the airfoil to facilitate high mass flow.

Inventors:
; ;
Issue Date:
Research Org.:
Siemens Energy, Inc., Orlando, FL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1255970
Patent Number(s):
9359902
Application Number:
13/930,479
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 Jun 28
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Campbell, Jr, Christian X., Marra, John J., and Marsh, Jan H.. Turbine airfoil with ambient cooling system. United States: N. p., 2016. Web.
Campbell, Jr, Christian X., Marra, John J., & Marsh, Jan H.. Turbine airfoil with ambient cooling system. United States.
Campbell, Jr, Christian X., Marra, John J., and Marsh, Jan H.. Tue . "Turbine airfoil with ambient cooling system". United States. https://www.osti.gov/servlets/purl/1255970.
@article{osti_1255970,
title = {Turbine airfoil with ambient cooling system},
author = {Campbell, Jr, Christian X. and Marra, John J. and Marsh, Jan H.},
abstractNote = {A turbine airfoil usable in a turbine engine and having at least one ambient air cooling system is disclosed. At least a portion of the cooling system may include one or more cooling channels configured to receive ambient air at about atmospheric pressure. The ambient air cooling system may have a tip static pressure to ambient pressure ratio of at least 0.5, and in at least one embodiment, may include a tip static pressure to ambient pressure ratio of between about 0.5 and about 3.0. The cooling system may also be configured such that an under root slot chamber in the root is large to minimize supply air velocity. One or more cooling channels of the ambient air cooling system may terminate at an outlet at the tip such that the outlet is aligned with inner surfaces forming the at least one cooling channel in the airfoil to facilitate high mass flow.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {6}
}

Works referenced in this record:

Hollow cooled vane or blade for a gas turbine engine
patent, January 1976


Turbine vane cooling
patent, February 1976


Cooling system for a gas turbine engine
patent, September 1978


Air cooled turbine vanes
patent, May 1979


Airfoil with nested cooling channels
patent, June 1988


Cooled turbine vane
patent, June 1990


Turbojet cooling system
patent, October 1994


Turbine blade composite cooling circuit
patent, February 1995


Self bleeding rotor blade
patent, January 1996


Cooled blades for a gas turbine engine
patent, February 1998


Turbine blade with enhanced cooling and profile optimization
patent, November 1999


Reduction of turbomachinery noise
patent, December 1999


Turbine blade airfoil
patent, August 2004


Dust resistant platform blade
patent, July 2007


Parallel serpentine cooled blade
patent, November 2007


Cooling arrangement
patent, March 2009


Multiple cooling schemes for turbine blade outer air seal
patent, November 2009


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


Ambient Air Cooling Arrangement Having A Pre-Swirler For Gas Turbine Engine Blade Cooling
patent-application, June 2013