EP0913556A3 - Turbine blade cooling - Google Patents

Turbine blade cooling Download PDF

Info

Publication number
EP0913556A3
EP0913556A3 EP98308829A EP98308829A EP0913556A3 EP 0913556 A3 EP0913556 A3 EP 0913556A3 EP 98308829 A EP98308829 A EP 98308829A EP 98308829 A EP98308829 A EP 98308829A EP 0913556 A3 EP0913556 A3 EP 0913556A3
Authority
EP
European Patent Office
Prior art keywords
blade
cooling
turbine blade
blade cooling
platform
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98308829A
Other languages
German (de)
French (fr)
Other versions
EP0913556A2 (en
Inventor
Stephen Mark Chambers
Thomas Gerard Wygle
Robert Cooper Simmons
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of EP0913556A2 publication Critical patent/EP0913556A2/en
Publication of EP0913556A3 publication Critical patent/EP0913556A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/20—Specially-shaped blade tips to seal space between tips and stator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
    • F01D5/186—Film cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
    • F01D5/187—Convection cooling

Abstract

A blade (10) for a gas turbine engine is disclosed having several improved cooling features. The blade has a plurality of internal cooling passages. The blade has a tip cap aperture (46) and film cooling holes (20), arranged such that the rearmost cooling passage in the blade receives sufficient cooling in all areas to control local heating of the blade. The blade also has angled turbulence promoters to improve internal cooling and a specially shaped platform (14) to avoid heating of the blade platform edges.
EP98308829A 1997-10-31 1998-10-28 Turbine blade cooling Withdrawn EP0913556A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US96212897A 1997-10-31 1997-10-31
US962128 1997-10-31

Publications (2)

Publication Number Publication Date
EP0913556A2 EP0913556A2 (en) 1999-05-06
EP0913556A3 true EP0913556A3 (en) 2000-07-26

Family

ID=25505455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98308829A Withdrawn EP0913556A3 (en) 1997-10-31 1998-10-28 Turbine blade cooling

Country Status (2)

Country Link
EP (1) EP0913556A3 (en)
JP (1) JPH11193701A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6331098B1 (en) * 1999-12-18 2001-12-18 General Electric Company Coriolis turbulator blade
US6579061B1 (en) 2001-07-27 2003-06-17 General Electric Company Selective step turbine nozzle
US6672832B2 (en) 2002-01-07 2004-01-06 General Electric Company Step-down turbine platform
US6652235B1 (en) * 2002-05-31 2003-11-25 General Electric Company Method and apparatus for reducing turbine blade tip region temperatures
US7121802B2 (en) 2004-07-13 2006-10-17 General Electric Company Selectively thinned turbine blade
US7097429B2 (en) 2004-07-13 2006-08-29 General Electric Company Skirted turbine blade
US7377747B2 (en) 2005-06-06 2008-05-27 General Electric Company Turbine airfoil with integrated impingement and serpentine cooling circuit
US7249934B2 (en) 2005-08-31 2007-07-31 General Electric Company Pattern cooled turbine airfoil
US7946816B2 (en) * 2008-01-10 2011-05-24 General Electric Company Turbine blade tip shroud
US20150064019A1 (en) * 2013-08-30 2015-03-05 General Electric Company Gas Turbine Components with Porous Cooling Features
JP7224928B2 (en) * 2019-01-17 2023-02-20 三菱重工業株式会社 Turbine rotor blades and gas turbines

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135857A (en) * 1977-06-09 1979-01-23 United Technologies Corporation Reduced drag airfoil platforms
US4278400A (en) * 1978-09-05 1981-07-14 United Technologies Corporation Coolable rotor blade
US4753575A (en) * 1987-08-06 1988-06-28 United Technologies Corporation Airfoil with nested cooling channels
US4992026A (en) * 1986-03-31 1991-02-12 Kabushiki Kaisha Toshiba Gas turbine blade
GB2250548A (en) * 1990-12-06 1992-06-10 Rolls Royce Plc Cooled turbine aerofoil blade
EP0527554A1 (en) * 1991-07-04 1993-02-17 Hitachi, Ltd. Turbine blade with internal cooling passage
US5243759A (en) * 1991-10-07 1993-09-14 United Technologies Corporation Method of casting to control the cooling air flow rate of the airfoil trailing edge
US5387085A (en) * 1994-01-07 1995-02-07 General Electric Company Turbine blade composite cooling circuit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135857A (en) * 1977-06-09 1979-01-23 United Technologies Corporation Reduced drag airfoil platforms
US4278400A (en) * 1978-09-05 1981-07-14 United Technologies Corporation Coolable rotor blade
US4992026A (en) * 1986-03-31 1991-02-12 Kabushiki Kaisha Toshiba Gas turbine blade
US4753575A (en) * 1987-08-06 1988-06-28 United Technologies Corporation Airfoil with nested cooling channels
GB2250548A (en) * 1990-12-06 1992-06-10 Rolls Royce Plc Cooled turbine aerofoil blade
EP0527554A1 (en) * 1991-07-04 1993-02-17 Hitachi, Ltd. Turbine blade with internal cooling passage
US5243759A (en) * 1991-10-07 1993-09-14 United Technologies Corporation Method of casting to control the cooling air flow rate of the airfoil trailing edge
US5387085A (en) * 1994-01-07 1995-02-07 General Electric Company Turbine blade composite cooling circuit

Also Published As

Publication number Publication date
EP0913556A2 (en) 1999-05-06
JPH11193701A (en) 1999-07-21

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