Internal cooling system with converging-diverging exit slots in trailing edge cooling channel for an airfoil in a turbine engine

Lee, Ching-Pang; Myers, Caleb; Johnson, Erik; Koester, Steven

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Title: Internal cooling system with converging-diverging exit slots in trailing edge cooling channel for an airfoil in a turbine engine

Abstract

An airfoil (10) is disclosed for a gas turbine engine in which the airfoil (10) includes an internal cooling system (14) with one or more converging-diverging exit slots (20) configured to increase the effectiveness of the cooling system (14) at the trailing edge (34) of the airfoil (10) by increasing the contact of cooling fluids with internal surfaces (24, 30) of the pressure and suction sides (36, 38) of the airfoil (10). In at least one embodiment, the trailing edge cooling channel (18) may include one or more converging-diverging exit slots (20) to further pressurize the trailing edge cooling channel (18) and may be formed by a first and second ribs (80, 82) extending between an outer walls (13, 12) forming the pressure and suction sides (36, 38). The converging-diverging exit slot (20) may be formed from a first converging section (84) having an inlet (86) with a larger cross-sectional area than an outlet (88) and is formed from a second diverging section (90) having an inlet (92) with a smaller cross-sectional area than an outlet (94).

Inventors:: Lee, Ching-Pang; Myers, Caleb; Johnson, Erik; Koester, Steven

Issue Date:: 2018-08-28

Research Org.:: Siemens Energy, Inc., Orlando, FL (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1473671

Patent Number(s):: 10060270

Application Number:: 15/552,882

Assignee:: Siemens Energy, Inc. (Orlando, FL)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

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

Show more

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F01D5/187 - {Convection cooling}

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
F05D2240/122 - related to the trailing edge of a stator vane
F05D2240/304 - related to the trailing edge of a rotor blade

Show less

DOE Contract Number:: FC26-05NT42644

Resource Type:: Patent

Resource Relation:: Patent File Date: 2015 Mar 17

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Lee, Ching-Pang, Myers, Caleb, Johnson, Erik, and Koester, Steven. Internal cooling system with converging-diverging exit slots in trailing edge cooling channel for an airfoil in a turbine engine.  United States: N. p., 2018. 
        Web.

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                    Lee, Ching-Pang, Myers, Caleb, Johnson, Erik, & Koester, Steven. Internal cooling system with converging-diverging exit slots in trailing edge cooling channel for an airfoil in a turbine engine.  United States.

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                    Lee, Ching-Pang, Myers, Caleb, Johnson, Erik, and Koester, Steven. Tue .  
        "Internal cooling system with converging-diverging exit slots in trailing edge cooling channel for an airfoil in a turbine engine".  United States.  https://www.osti.gov/servlets/purl/1473671.

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@article{osti_1473671,

  title        = {Internal cooling system with converging-diverging exit slots in trailing edge cooling channel for an airfoil in a turbine engine},

  author       = {Lee, Ching-Pang and Myers, Caleb and Johnson, Erik and Koester, Steven},

  abstractNote = {An airfoil (10) is disclosed for a gas turbine engine in which the airfoil (10) includes an internal cooling system (14) with one or more converging-diverging exit slots (20) configured to increase the effectiveness of the cooling system (14) at the trailing edge (34) of the airfoil (10) by increasing the contact of cooling fluids with internal surfaces (24, 30) of the pressure and suction sides (36, 38) of the airfoil (10). In at least one embodiment, the trailing edge cooling channel (18) may include one or more converging-diverging exit slots (20) to further pressurize the trailing edge cooling channel (18) and may be formed by a first and second ribs (80, 82) extending between an outer walls (13, 12) forming the pressure and suction sides (36, 38). The converging-diverging exit slot (20) may be formed from a first converging section (84) having an inlet (86) with a larger cross-sectional area than an outlet (88) and is formed from a second diverging section (90) having an inlet (92) with a smaller cross-sectional area than an outlet (94).},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2018},

  month        = {8}

}

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Similar Records

Title: Internal cooling system with converging-diverging exit slots in trailing edge cooling channel for an airfoil in a turbine engine

Abstract

Citation Formats

Impingement baffle collars patent, August 1976

Guide vanes for gas turbine engines patent, March 1981

Turbine distributor vane patent, September 1983

Hot gas overheat protection device for gas turbine engines patent, July 1991

Method of casting to control the cooling air flow rate of the airfoil trailing edge patent, September 1993

Turbine blade trailing edge cooling construction patent, September 1993

Integrated steam and air cooling for combined cycle gas turbines patent, October 1993

Multilayer parison extruder patent, March 1994

Turbine cooling blade having inner hollow structure with improved cooling patent, July 1996

Closed or open air cooling circuits for nozzle segments with wheelspace purge patent, January 1997

Cooled turbine blade for a gas turbine patent, April 1997

Gas turbine cooling stationary vane patent, March 2000

Turbine blade trailing edge cooling openings and slots patent, January 2001

Cooling circuits for trailing edge cavities in airfoils patent, February 2001

Turbine blade with preferentially-cooled trailing edge pressure wall patent, August 2001

Turbine airfoil trailing edge with micro cooling channels patent, December 2002

Foil formed structure for turbine airfoil trailing edge patent, April 2003

Methods and apparatus for cooling gas turbine nozzles patent, August 2003

Venturi outlet turbine airfoil patent, November 2005

Methods and apparatus for cooling turbine blade trailing edges patent, June 2008

Turbine blade including revised trailing edge cooling patent, November 2008

Turbine nozzle with trailing edge convection and film cooling patent, March 2009

Turbine nozzle with trailing edge convection and film cooling patent, August 2009

Plasma induced virtual turbine airfoil trailing edge extension patent, June 2010

Hybrid impingement cooled airfoil patent, May 2012

Turbine vane with leading edge insert patent, June 2012

Airflow influencing airfoil feature array patent, January 2013

Gas turbine engine component cooling scheme patent, March 2013

Industrial stator vane with sequential impingement cooling inserts patent, August 2013

Trailing edge cooling system in a turbine airfoil assembly patent, September 2014

Turbine airfoil trailing edge with micro cooling channels patent-application, October 2002

Airfoil trailing edge cooling construction patent-application, December 2002

Turbine Airfoil With Enhanced Heat Transfer patent-application, April 2003

Gas turbine airfoil trailing edge corner patent-application, December 2005

Turbine nozzle with trailing edge convection and film cooling patent-application, October 2006

Turbine nozzle with trailing edge convection and film cooling patent-application, October 2006

Rotor blade for a wind turbine having aerodynamic feature elements patent-application, May 2007

Methods and apparatus for cooling turbine blade trailing edges patent-application, June 2007

Plasma induced virtual turbine airfoil trailing edge extension patent-application, June 2008

Hybrid Impingement Cooled Airfoil patent-application, October 2009

Airfoil Insert patent-application, March 2010

Trailing Edge Cooling Slot Configuration for a Turbine Airfoil patent-application, March 2010

Gas Turbine Engine Component Colling Scheme patent-application, March 2011

Impingement Insert for a Turbomachine Injector patent-application, May 2011

Trailing Edge Cooling System in a Turbine Airfoil Assembly patent-application, March 2013

Turbine Blade Incorporating Trailing Edge Cooling Design patent-application, June 2013

Asymmetrically Shaped Trailing Edge Cooling Holes patent-application, November 2013

Casting Core For A Cooling Arrangement For A Gas Turbine Component patent-application, April 2014

Cooling Arrangement for a Gas Turbine Component patent-application, April 2014

Cooling System Including Wavy Cooling Chamber in a Trailing Edge Portion of an Airfoil Assembly patent-application, October 2014

Impingement baffle collars
patent, August 1976

Guide vanes for gas turbine engines
patent, March 1981

Turbine distributor vane
patent, September 1983

Hot gas overheat protection device for gas turbine engines
patent, July 1991

Method of casting to control the cooling air flow rate of the airfoil trailing edge
patent, September 1993

Turbine blade trailing edge cooling construction
patent, September 1993

Integrated steam and air cooling for combined cycle gas turbines
patent, October 1993

Multilayer parison extruder
patent, March 1994

Turbine cooling blade having inner hollow structure with improved cooling
patent, July 1996

Closed or open air cooling circuits for nozzle segments with wheelspace purge
patent, January 1997

Cooled turbine blade for a gas turbine
patent, April 1997

Gas turbine cooling stationary vane
patent, March 2000

Turbine blade trailing edge cooling openings and slots
patent, January 2001

Cooling circuits for trailing edge cavities in airfoils
patent, February 2001

Turbine blade with preferentially-cooled trailing edge pressure wall
patent, August 2001

Turbine airfoil trailing edge with micro cooling channels
patent, December 2002

Foil formed structure for turbine airfoil trailing edge
patent, April 2003

Methods and apparatus for cooling gas turbine nozzles
patent, August 2003

Venturi outlet turbine airfoil
patent, November 2005

Methods and apparatus for cooling turbine blade trailing edges
patent, June 2008

Turbine blade including revised trailing edge cooling
patent, November 2008

Turbine nozzle with trailing edge convection and film cooling
patent, March 2009

Turbine nozzle with trailing edge convection and film cooling
patent, August 2009

Plasma induced virtual turbine airfoil trailing edge extension
patent, June 2010

Hybrid impingement cooled airfoil
patent, May 2012

Turbine vane with leading edge insert
patent, June 2012

Airflow influencing airfoil feature array
patent, January 2013

Gas turbine engine component cooling scheme
patent, March 2013

Industrial stator vane with sequential impingement cooling inserts
patent, August 2013

Trailing edge cooling system in a turbine airfoil assembly
patent, September 2014

Turbine airfoil trailing edge with micro cooling channels
patent-application, October 2002

Airfoil trailing edge cooling construction
patent-application, December 2002

Turbine Airfoil With Enhanced Heat Transfer
patent-application, April 2003

Gas turbine airfoil trailing edge corner
patent-application, December 2005

Turbine nozzle with trailing edge convection and film cooling
patent-application, October 2006

Turbine nozzle with trailing edge convection and film cooling
patent-application, October 2006

Rotor blade for a wind turbine having aerodynamic feature elements
patent-application, May 2007

Methods and apparatus for cooling turbine blade trailing edges
patent-application, June 2007

Plasma induced virtual turbine airfoil trailing edge extension
patent-application, June 2008

Hybrid Impingement Cooled Airfoil
patent-application, October 2009

Airfoil Insert
patent-application, March 2010

Trailing Edge Cooling Slot Configuration for a Turbine Airfoil
patent-application, March 2010

Gas Turbine Engine Component Colling Scheme
patent-application, March 2011

Impingement Insert for a Turbomachine Injector
patent-application, May 2011

Trailing Edge Cooling System in a Turbine Airfoil Assembly
patent-application, March 2013

Turbine Blade Incorporating Trailing Edge Cooling Design
patent-application, June 2013

Asymmetrically Shaped Trailing Edge Cooling Holes
patent-application, November 2013

Casting Core For A Cooling Arrangement For A Gas Turbine Component
patent-application, April 2014

Cooling Arrangement for a Gas Turbine Component
patent-application, April 2014

Cooling System Including Wavy Cooling Chamber in a Trailing Edge Portion of an Airfoil Assembly
patent-application, October 2014