WO2014025729A8 - Last stage turbine blade including a plurality of leading edge indentations, corresponding rotor assembly and steam turbine - Google Patents

Last stage turbine blade including a plurality of leading edge indentations, corresponding rotor assembly and steam turbine Download PDF

Info

Publication number
WO2014025729A8
WO2014025729A8 PCT/US2013/053713 US2013053713W WO2014025729A8 WO 2014025729 A8 WO2014025729 A8 WO 2014025729A8 US 2013053713 W US2013053713 W US 2013053713W WO 2014025729 A8 WO2014025729 A8 WO 2014025729A8
Authority
WO
WIPO (PCT)
Prior art keywords
steam turbine
leading edge
last stage
rotor assembly
corresponding rotor
Prior art date
Application number
PCT/US2013/053713
Other languages
French (fr)
Other versions
WO2014025729A1 (en
Inventor
Alan Donn Maddaus
Original Assignee
General Electric Company
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 Company filed Critical General Electric Company
Priority to RU2015103596A priority Critical patent/RU2015103596A/en
Priority to CN201380042146.6A priority patent/CN104755704B/en
Priority to EP13750793.5A priority patent/EP2893144A1/en
Priority to JP2015526621A priority patent/JP2015525854A/en
Publication of WO2014025729A1 publication Critical patent/WO2014025729A1/en
Publication of WO2014025729A8 publication Critical patent/WO2014025729A8/en

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
    • F01D5/16—Form or construction for counteracting blade vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/32—Application in turbines in gas turbines
    • F05D2220/321—Application in turbines in gas turbines for a special turbine stage
    • F05D2220/3215—Application in turbines in gas turbines for a special turbine stage the last stage of the turbine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/303—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the leading edge of a rotor blade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F05D2250/00—Geometry
    • F05D2250/60—Structure; Surface texture
    • F05D2250/61—Structure; Surface texture corrugated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F05D2260/00—Function
    • F05D2260/94—Functionality given by mechanical stress related aspects such as low cycle fatigue [LCF] of high cycle fatigue [HCF]
    • F05D2260/941—Functionality given by mechanical stress related aspects such as low cycle fatigue [LCF] of high cycle fatigue [HCF] particularly aimed at mechanical or thermal stress reduction

Abstract

Aspects of the invention provide for a last stage blade of a steam turbine. In one embodiment, the last stage blade of a steam turbine includes: a blade leading edge for receiving a through flow, the blade leading edge including a plurality of indentations at a top portion of the steam turbine blade; and a blade trailing edge for exhausting the through flow. Corresponding rotor assembly and steam turbine are also provided.
PCT/US2013/053713 2012-08-07 2013-08-06 Last stage turbine blade including a plurality of leading edge indentations, corresponding rotor assembly and steam turbine WO2014025729A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
RU2015103596A RU2015103596A (en) 2012-08-07 2013-08-06 LAST TURBINE WORKING SHOVEL, HAVING CUTS ON THE FRONT EDGE, RELATED ROTARY ASSEMBLY AND STEAM TURBINE
CN201380042146.6A CN104755704B (en) 2012-08-07 2013-08-06 Including the final stage turbo blade of multiple leading edge indentures, corresponding rotor assembly and steamturbine
EP13750793.5A EP2893144A1 (en) 2012-08-07 2013-08-06 Last stage turbine blade including a plurality of leading edge indentations, corresponding rotor assembly and steam turbine
JP2015526621A JP2015525854A (en) 2012-08-07 2013-08-06 Last stage turbine blade including multiple leading edge recesses, and corresponding rotor assembly and steam turbine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/568,609 2012-08-07
US13/568,609 US20140044556A1 (en) 2012-08-07 2012-08-07 Last stage blade including a plurality of leading edge indentations

Publications (2)

Publication Number Publication Date
WO2014025729A1 WO2014025729A1 (en) 2014-02-13
WO2014025729A8 true WO2014025729A8 (en) 2015-03-05

Family

ID=49001070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2013/053713 WO2014025729A1 (en) 2012-08-07 2013-08-06 Last stage turbine blade including a plurality of leading edge indentations, corresponding rotor assembly and steam turbine

Country Status (6)

Country Link
US (1) US20140044556A1 (en)
EP (1) EP2893144A1 (en)
JP (1) JP2015525854A (en)
CN (1) CN104755704B (en)
RU (1) RU2015103596A (en)
WO (1) WO2014025729A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108035775A (en) * 2018-01-08 2018-05-15 翁志远 Rotor, steam turbine and prime mover equipment of steam turbine

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1862827A (en) * 1930-01-22 1932-06-14 Parsons Steam turbine
US3304056A (en) * 1965-03-19 1967-02-14 Hitachi Ltd Turbine blades
JPS6380003A (en) * 1986-09-25 1988-04-11 Hitachi Ltd Exhaust diffuser cascade of axial-flow turbine
JPS63179101A (en) * 1987-01-20 1988-07-23 Mitsubishi Heavy Ind Ltd Axial flow turbine
US6139258A (en) * 1987-03-30 2000-10-31 United Technologies Corporation Airfoils with leading edge pockets for reduced heat transfer
US5641268A (en) * 1991-09-17 1997-06-24 Rolls-Royce Plc Aerofoil members for gas turbine engines
JPH07158402A (en) * 1993-12-10 1995-06-20 Mitsubishi Heavy Ind Ltd Moving blade for turbomachinery
JP3771967B2 (en) * 1996-05-21 2006-05-10 株式会社東芝 Axial flow turbine
KR20010005910A (en) * 1997-04-01 2001-01-15 칼 하인쯔 호르닝어 Surface structure for the wall of a flow channel or a turbine blade
US6428278B1 (en) * 2000-12-04 2002-08-06 United Technologies Corporation Mistuned rotor blade array for passive flutter control
US6422821B1 (en) * 2001-01-09 2002-07-23 General Electric Company Method and apparatus for reducing turbine blade tip temperatures
EP1607573B2 (en) * 2004-06-02 2012-10-03 Rolls-Royce Deutschland Ltd & Co KG Compressor blade with reduced aerodynamic vibration induction
CN101042054A (en) * 2006-03-24 2007-09-26 中国科学院工程热物理研究所 Unshrouded turbine and its blade tip with groove
US7901523B2 (en) * 2007-11-16 2011-03-08 General Electric Company Uniform heat treatment process for hardening steel
US8056227B2 (en) * 2009-02-06 2011-11-15 General Electric Company Turbine blade having material block and related method
US8277189B2 (en) * 2009-11-12 2012-10-02 General Electric Company Turbine blade and rotor

Also Published As

Publication number Publication date
CN104755704B (en) 2016-12-14
US20140044556A1 (en) 2014-02-13
RU2015103596A (en) 2016-09-27
JP2015525854A (en) 2015-09-07
WO2014025729A1 (en) 2014-02-13
CN104755704A (en) 2015-07-01
EP2893144A1 (en) 2015-07-15

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