JP4721638B2 - バケット固有振動数を調整するための方法及び装置 - Google Patents

バケット固有振動数を調整するための方法及び装置 Download PDF

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Publication number
JP4721638B2
JP4721638B2 JP2003432087A JP2003432087A JP4721638B2 JP 4721638 B2 JP4721638 B2 JP 4721638B2 JP 2003432087 A JP2003432087 A JP 2003432087A JP 2003432087 A JP2003432087 A JP 2003432087A JP 4721638 B2 JP4721638 B2 JP 4721638B2
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Japan
Prior art keywords
blade
rotor blade
rotor
extension
natural frequency
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.)
Expired - Lifetime
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JP2003432087A
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English (en)
Japanese (ja)
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JP2004211705A5 (enExample
JP2004211705A (ja
Inventor
ケビン・ジョセフ・バーブ
エミール・ムジェジノヴィク
ニコラス・フランシス・マーティン
ダグラス・カール・ホーファー
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General Electric Co
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General Electric Co
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Publication of JP2004211705A5 publication Critical patent/JP2004211705A5/ja
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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
    • 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
    • F01D5/141—Shape, i.e. outer, aerodynamic form
    • 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
    • F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
    • F01D5/24—Blade-to-blade connections, e.g. for damping vibrations using wire or the like
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/10—Manufacture by removing material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S416/00—Fluid reaction surfaces, i.e. impellers
    • Y10S416/50—Vibration damping features

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
JP2003432087A 2002-12-30 2003-12-26 バケット固有振動数を調整するための方法及び装置 Expired - Lifetime JP4721638B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/334,431 US6814543B2 (en) 2002-12-30 2002-12-30 Method and apparatus for bucket natural frequency tuning
US10/334,431 2002-12-30

Publications (3)

Publication Number Publication Date
JP2004211705A JP2004211705A (ja) 2004-07-29
JP2004211705A5 JP2004211705A5 (enExample) 2007-02-15
JP4721638B2 true JP4721638B2 (ja) 2011-07-13

Family

ID=32507377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003432087A Expired - Lifetime JP4721638B2 (ja) 2002-12-30 2003-12-26 バケット固有振動数を調整するための方法及び装置

Country Status (4)

Country Link
US (1) US6814543B2 (enExample)
JP (1) JP4721638B2 (enExample)
DE (1) DE10359917A1 (enExample)
RU (1) RU2264541C2 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11879353B2 (en) 2021-10-25 2024-01-23 Mitsubishi Heavy Industries, Ltd. Blade set and blisk

Families Citing this family (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7008179B2 (en) * 2003-12-16 2006-03-07 General Electric Co. Turbine blade frequency tuned pin bank
US20070231141A1 (en) * 2006-03-31 2007-10-04 Honeywell International, Inc. Radial turbine wheel with locally curved trailing edge tip
US7588421B2 (en) * 2006-03-31 2009-09-15 General Electric Company Methods and apparatus for mechanical retainment of non-metallic fillers in pockets
US7942639B2 (en) 2006-03-31 2011-05-17 General Electric Company Hybrid bucket dovetail pocket design for mechanical retainment
US7866949B2 (en) * 2006-08-24 2011-01-11 General Electric Company Methods and apparatus for fabricating a rotor for a steam turbine
US20080089789A1 (en) * 2006-10-17 2008-04-17 Thomas Joseph Farineau Airfoils for use with turbine assemblies and methods of assembling the same
US7946823B2 (en) * 2007-07-16 2011-05-24 Nuovo Pignone Holdings, S.P.A. Steam turbine rotating blade
US7946822B2 (en) * 2007-07-16 2011-05-24 Nuovo Pignone Holdings, S.P.A. Steam turbine rotating blade
DE102007059155A1 (de) * 2007-12-06 2009-06-10 Rolls-Royce Deutschland Ltd & Co Kg Verfahren zur Herstellung von in Integralbauweise ausgebildeten Laufrädern für Verdichter und Turbinen
US20090155082A1 (en) * 2007-12-18 2009-06-18 Loc Duong Method to maximize resonance-free running range for a turbine blade
CN102089520B (zh) * 2008-06-30 2013-09-18 维斯塔斯风力系统集团公司 用于测试风力涡轮机叶片的测试设备
US8052393B2 (en) * 2008-09-08 2011-11-08 General Electric Company Steam turbine rotating blade for a low pressure section of a steam turbine engine
US8057187B2 (en) * 2008-09-08 2011-11-15 General Electric Company Steam turbine rotating blade for a low pressure section of a steam turbine engine
US8096775B2 (en) * 2008-09-08 2012-01-17 General Electric Company Steam turbine rotating blade for a low pressure section of a steam turbine engine
US8210822B2 (en) * 2008-09-08 2012-07-03 General Electric Company Dovetail for steam turbine rotating blade and rotor wheel
US8100657B2 (en) * 2008-09-08 2012-01-24 General Electric Company Steam turbine rotating blade for a low pressure section of a steam turbine engine
US8075272B2 (en) * 2008-10-14 2011-12-13 General Electric Company Steam turbine rotating blade for a low pressure section of a steam turbine engine
US8118557B2 (en) * 2009-03-25 2012-02-21 General Electric Company Steam turbine rotating blade of 52 inch active length for steam turbine low pressure application
US7997873B2 (en) * 2009-03-27 2011-08-16 General Electric Company High efficiency last stage bucket for steam turbine
US8419370B2 (en) * 2009-06-25 2013-04-16 Rolls-Royce Corporation Retaining and sealing ring assembly
US8469670B2 (en) * 2009-08-27 2013-06-25 Rolls-Royce Corporation Fan assembly
US8435006B2 (en) * 2009-09-30 2013-05-07 Rolls-Royce Corporation Fan
US8735782B2 (en) * 2010-04-22 2014-05-27 General Electric Company System for forming brazed joint between tie wire and workpiece, and methods therefor
CN102434223B (zh) * 2011-12-13 2014-08-20 杭州汽轮机股份有限公司 大流量空冷汽轮机低压级组末级叶片
US8936435B2 (en) 2011-12-16 2015-01-20 General Electric Company System and method for root loss reduction in wind turbine blades
CN104093937B (zh) * 2012-01-25 2016-05-18 西门子公司 用于双流式流体机械的转子
US9151167B2 (en) 2012-02-10 2015-10-06 General Electric Company Turbine assembly
EP2685050B1 (en) * 2012-07-11 2017-02-01 General Electric Technology GmbH Stationary vane assembly for an axial flow turbine
US10982551B1 (en) 2012-09-14 2021-04-20 Raytheon Technologies Corporation Turbomachine blade
US9328619B2 (en) 2012-10-29 2016-05-03 General Electric Company Blade having a hollow part span shroud
US10215032B2 (en) 2012-10-29 2019-02-26 General Electric Company Blade having a hollow part span shroud
EP2762678A1 (de) * 2013-02-05 2014-08-06 Siemens Aktiengesellschaft Verfahren zum Verstimmen eines Laufschaufelgitters
US10465531B2 (en) 2013-02-21 2019-11-05 General Electric Company Turbine blade tip shroud and mid-span snubber with compound contact angle
US20160003060A1 (en) * 2013-03-07 2016-01-07 United Technologies Corporation Hybrid fan blades for jet engines
EP3102792B1 (en) 2014-01-24 2021-09-01 Raytheon Technologies Corporation Gas turbine engine stator vane mistuning
US10443391B2 (en) 2014-05-23 2019-10-15 United Technologies Corporation Gas turbine engine stator vane asymmetry
US9587496B2 (en) 2014-08-07 2017-03-07 General Electric Company Turbine blade mid-span shroud
US9574450B2 (en) 2014-08-07 2017-02-21 General Electric Company Turbine blade mid-span shroud assembly
GB201511416D0 (en) * 2015-06-30 2015-08-12 Napier Turbochargers Ltd Turbomachinery rotor blade
EP3187685A1 (de) * 2015-12-28 2017-07-05 Siemens Aktiengesellschaft Verfahren zum herstellen eines grundkörpers einer turbinenschaufel
US10760429B1 (en) * 2017-01-17 2020-09-01 Raytheon Technologies Corporation Gas turbine engine airfoil frequency design
US11199096B1 (en) 2017-01-17 2021-12-14 Raytheon Technologies Corporation Turbomachine blade
US10683761B1 (en) * 2017-01-17 2020-06-16 Raytheon Technologies Corporation Gas turbine engine airfoil frequency design
US10760592B1 (en) * 2017-01-17 2020-09-01 Raytheon Technologies Corporation Gas turbine engine airfoil frequency design
US11767763B1 (en) * 2017-01-17 2023-09-26 Raytheon Technologies Corporation Gas turbine engine airfoil frequency design
US10774651B1 (en) * 2017-01-17 2020-09-15 Raytheon Technologies Corporation Gas turbine engine airfoil frequency design
US10677266B1 (en) * 2017-01-17 2020-06-09 Raytheon Technologies Corporation Gas turbine engine airfoil frequency design
US10788049B1 (en) * 2017-01-17 2020-09-29 Raytheon Technologies Corporation Gas turbine engine airfoil frequency design
US11698002B1 (en) * 2017-01-17 2023-07-11 Raytheon Technologies Corporation Gas turbine engine airfoil frequency design
US10480535B2 (en) * 2017-03-22 2019-11-19 Pratt & Whitney Canada Corp. Fan rotor with flow induced resonance control
US11231175B2 (en) * 2018-06-19 2022-01-25 General Electric Company Integrated combustor nozzles with continuously curved liner segments
US10920594B2 (en) * 2018-12-12 2021-02-16 Solar Turbines Incorporated Modal response tuned turbine blade
CN111458007B (zh) * 2020-05-06 2021-09-24 哈尔滨电机厂有限责任公司 一种汽轮发电机端部局部振动识别的方法
US11905845B1 (en) * 2021-10-21 2024-02-20 United States Of America As Represented By The Secretary Of The Air Force Method and system for repairing turbine airfoils
US12037918B2 (en) 2022-04-05 2024-07-16 Rtx Corporation Systems and methods for parameterization of inspected bladed rotor analysis
US12318877B2 (en) 2022-04-05 2025-06-03 Rtx Corporation Blend approach based inspection and analysis systems and methods
US12410711B2 (en) 2022-04-05 2025-09-09 Rtx Corporation Bladed rotor inspection, analysis and repair systems and methods
US11860060B2 (en) 2022-04-05 2024-01-02 Rtx Corporation Integrally bladed rotor analysis and repair systems and methods
US12385400B2 (en) 2022-04-29 2025-08-12 Pratt & Whitney Canada Corp. Method of manufacturing a mistuned rotor

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1033197A (fr) * 1951-02-27 1953-07-08 Rateau Soc Amortisseurs de vibrations pour aubages mobiles de turbo-machines
US3677662A (en) * 1970-10-09 1972-07-18 Avco Corp Multilayer ring damped turbomachine rotor assembly
US4108573A (en) * 1977-01-26 1978-08-22 Westinghouse Electric Corp. Vibratory tuning of rotatable blades for elastic fluid machines
JPS54114619A (en) * 1978-02-28 1979-09-06 Toshiba Corp Natural frequency adjusting method of turbine blade
CH667493A5 (de) * 1985-05-31 1988-10-14 Bbc Brown Boveri & Cie Daempfungselement fuer freistehende turbomaschinenschaufeln.
US4967550A (en) * 1987-04-28 1990-11-06 Rolls-Royce Plc Active control of unsteady motion phenomena in turbomachinery
CA1295018C (en) * 1987-09-23 1992-01-28 Westinghouse Electric Corporation Method and apparatus for determining resonant frequency of a turbine blade made of a material not responsive to a magnetic field
US4878810A (en) * 1988-05-20 1989-11-07 Westinghouse Electric Corp. Turbine blades having alternating resonant frequencies
US5116200A (en) 1990-06-28 1992-05-26 General Electric Company Apparatus and methods for minimizing vibrational stresses in axial flow turbines
US5480285A (en) 1993-08-23 1996-01-02 Westinghouse Electric Corporation Steam turbine blade
US5393200A (en) 1994-04-04 1995-02-28 General Electric Co. Bucket for the last stage of turbine
US5509784A (en) 1994-07-27 1996-04-23 General Electric Co. Turbine bucket and wheel assembly with integral bucket shroud
RU2094618C1 (ru) * 1995-08-30 1997-10-27 Валентин Иванович Акимов Устройство для диагностики автоколебаний рабочего колеса турбомашины
JP3178327B2 (ja) 1996-01-31 2001-06-18 株式会社日立製作所 蒸気タービン
JPH1054204A (ja) 1996-05-20 1998-02-24 General Electric Co <Ge> ガスタービン用の多構成部翼
GB9618096D0 (en) * 1996-08-29 1996-10-09 Rolls Royce Plc Identification of resonant frequencies of vibration of rotating blades
US5820348A (en) 1996-09-17 1998-10-13 Fricke; J. Robert Damping system for vibrating members
US5931641A (en) 1997-04-25 1999-08-03 General Electric Company Steam turbine blade having areas of different densities
DE19719406C1 (de) 1997-05-12 1998-11-19 Voith Hydro Gmbh & Co Kg Verfahren zum Betreiben einer hydraulischen Maschine
JP4058906B2 (ja) 1997-09-05 2008-03-12 株式会社日立製作所 蒸気タービン
US5988982A (en) 1997-09-09 1999-11-23 Lsp Technologies, Inc. Altering vibration frequencies of workpieces, such as gas turbine engine blades
JPH11182204A (ja) 1997-12-15 1999-07-06 Toshiba Corp タービン動翼
US6053699A (en) 1998-07-27 2000-04-25 General Electric Company Steam turbine having a brush seal assembly
JP3715458B2 (ja) * 1999-03-11 2005-11-09 株式会社東芝 タービンの動翼の振動管理方法
JP2001027103A (ja) * 1999-07-14 2001-01-30 Ishikawajima Harima Heavy Ind Co Ltd ターボ機械の静翼構造
US6415206B1 (en) 2000-02-24 2002-07-02 Simmonds Precision Products, Inc. Method for determining a minimal set of rotor blade adjustments
US6471482B2 (en) 2000-11-30 2002-10-29 United Technologies Corporation Frequency-mistuned light-weight turbomachinery blade rows for increased flutter stability
US6428278B1 (en) * 2000-12-04 2002-08-06 United Technologies Corporation Mistuned rotor blade array for passive flutter control
US6435834B1 (en) 2001-01-31 2002-08-20 General Electric Company Bucket and wheel dovetail connection for turbine rotors
JP2002266602A (ja) * 2001-03-06 2002-09-18 Hitachi Ltd 蒸気タービンの動翼

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11879353B2 (en) 2021-10-25 2024-01-23 Mitsubishi Heavy Industries, Ltd. Blade set and blisk

Also Published As

Publication number Publication date
US6814543B2 (en) 2004-11-09
US20040126235A1 (en) 2004-07-01
RU2264541C2 (ru) 2005-11-20
JP2004211705A (ja) 2004-07-29
RU2003137880A (ru) 2005-06-10
DE10359917A1 (de) 2004-07-08

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