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EP1217170A3 - Method to tune the natural frequency of turbine blades by using the orientation of the secondary axes - Google Patents

Method to tune the natural frequency of turbine blades by using the orientation of the secondary axes Download PDF

Info

Publication number
EP1217170A3
EP1217170A3 EP01306925A EP01306925A EP1217170A3 EP 1217170 A3 EP1217170 A3 EP 1217170A3 EP 01306925 A EP01306925 A EP 01306925A EP 01306925 A EP01306925 A EP 01306925A EP 1217170 A3 EP1217170 A3 EP 1217170A3
Authority
EP
European Patent Office
Prior art keywords
turbine bucket
tuning
natural frequency
turbine
orientation
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Withdrawn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
EP01306925A
Other languages
German (de)
French (fr)
Other versions
EP1217170A2 (en
Inventor
John Zhiqiang Wang
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 EP1217170A2 publication Critical patent/EP1217170A2/en
Publication of EP1217170A3 publication Critical patent/EP1217170A3/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Withdrawn legal-status Critical Current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
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • B22D27/045—Directionally solidified castings
    • 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
    • F01D5/26—Antivibration means not restricted to blade form or construction or to blade-to-blade connections or to the use of particular materials
    • 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
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/21—Manufacture essentially without removing material by casting
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/607—Monocrystallinity

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

Tuning of turbine bucket torsional and stripe mode natural frequencies can be effected without altering any turbine bucket physical features, such as weight and/or shape, and without affecting flexure frequencies. The tuning of certain turbine bucket natural frequencies serves to avoid detrimental blade resonance, thus improving the reliability of a gas turbine. The method includes investment casting the turbine bucket with a single crystal alloy, and tuning the natural frequency of the turbine bucket without modifying physical features of the turbine bucket by placing a crystal seed along a desired direction according to a relative orientation of an engine axial direction.
EP01306925A 2000-12-14 2001-08-14 Method to tune the natural frequency of turbine blades by using the orientation of the secondary axes Withdrawn EP1217170A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US735503 1991-07-25
US09/735,503 US20020074102A1 (en) 2000-12-14 2000-12-14 Method using secondary orientation to tune bucket natural frequency

Publications (2)

Publication Number Publication Date
EP1217170A2 EP1217170A2 (en) 2002-06-26
EP1217170A3 true EP1217170A3 (en) 2003-10-15

Family

ID=24956083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01306925A Withdrawn EP1217170A3 (en) 2000-12-14 2001-08-14 Method to tune the natural frequency of turbine blades by using the orientation of the secondary axes

Country Status (5)

Country Link
US (1) US20020074102A1 (en)
EP (1) EP1217170A3 (en)
JP (1) JP2002201902A (en)
KR (1) KR20020046909A (en)
CZ (1) CZ20012940A3 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7338259B2 (en) * 2004-03-02 2008-03-04 United Technologies Corporation High modulus metallic component for high vibratory operation
US20050227106A1 (en) * 2004-04-08 2005-10-13 Schlichting Kevin W Single crystal combustor panels having controlled crystallographic orientation
US7988412B2 (en) * 2007-08-24 2011-08-02 General Electric Company Structures for damping of turbine components
CN102451619B (en) * 2010-10-15 2013-11-20 中国石油化工股份有限公司 Y-shaped molecular sieve film and removal method for moisture in dichloromethane
US20120101792A1 (en) * 2010-10-25 2012-04-26 Alexander Staroselsky Turbine component and method for developing a component
ES2583756T3 (en) * 2011-04-01 2016-09-22 MTU Aero Engines AG Blade arrangement for a turbomachine
DE102013226015A1 (en) * 2013-12-16 2015-07-16 MTU Aero Engines AG blade cascade
DE102014214270A1 (en) 2014-07-22 2016-02-18 MTU Aero Engines AG Bucket grid for a turbomachine
FR3038341B1 (en) * 2015-07-03 2017-07-28 Snecma METHOD OF ALTERATION OF THE LAYING ACT OF THE AERODYNAMIC SURFACE OF A GAS TURBINE ENGINE BLOWER BLADE
DE102018202725A1 (en) 2018-02-22 2019-08-22 MTU Aero Engines AG Arrangement of blades in a blade ring based on a primary crystal orientation
CN109269745B (en) * 2018-10-30 2021-01-19 湖南科技大学 Large bucket wheel machine cantilever low-frequency vibration testing method based on carrier roller excitation method
US11499431B2 (en) 2021-01-06 2022-11-15 General Electric Company Engine component with structural segment

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044746A (en) * 1960-05-18 1962-07-17 Gen Electric Fluid-flow machinery blading
US4605452A (en) * 1981-12-14 1986-08-12 United Technologies Corporation Single crystal articles having controlled secondary crystallographic orientation
US4804311A (en) * 1981-12-14 1989-02-14 United Technologies Corporation Transverse directional solidification of metal single crystal articles
US4919593A (en) * 1988-08-30 1990-04-24 Westinghouse Electric Corp. Retrofitted rotor blades for steam turbines and method of making the same
JPH0633701A (en) * 1992-07-16 1994-02-08 Hitachi Ltd Single crystal moving blade for gas turbine and production thereof
US5292385A (en) * 1991-12-18 1994-03-08 Alliedsignal Inc. Turbine rotor having improved rim durability
US5682747A (en) * 1996-04-10 1997-11-04 General Electric Company Gas turbine combustor heat shield of casted super alloy
JPH1136805A (en) * 1997-07-14 1999-02-09 Hitachi Ltd Turbine blade

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044746A (en) * 1960-05-18 1962-07-17 Gen Electric Fluid-flow machinery blading
US4605452A (en) * 1981-12-14 1986-08-12 United Technologies Corporation Single crystal articles having controlled secondary crystallographic orientation
US4804311A (en) * 1981-12-14 1989-02-14 United Technologies Corporation Transverse directional solidification of metal single crystal articles
US4919593A (en) * 1988-08-30 1990-04-24 Westinghouse Electric Corp. Retrofitted rotor blades for steam turbines and method of making the same
US5292385A (en) * 1991-12-18 1994-03-08 Alliedsignal Inc. Turbine rotor having improved rim durability
JPH0633701A (en) * 1992-07-16 1994-02-08 Hitachi Ltd Single crystal moving blade for gas turbine and production thereof
US5682747A (en) * 1996-04-10 1997-11-04 General Electric Company Gas turbine combustor heat shield of casted super alloy
JPH1136805A (en) * 1997-07-14 1999-02-09 Hitachi Ltd Turbine blade

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 249 (M - 1604) 12 May 1994 (1994-05-12) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 05 31 May 1999 (1999-05-31) *

Also Published As

Publication number Publication date
JP2002201902A (en) 2002-07-19
KR20020046909A (en) 2002-06-21
CZ20012940A3 (en) 2002-07-17
EP1217170A2 (en) 2002-06-26
US20020074102A1 (en) 2002-06-20

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