JPS57143105A - Vibration damping mechanism of vane in axial-flow rotary machine - Google Patents

Vibration damping mechanism of vane in axial-flow rotary machine

Info

Publication number
JPS57143105A
JPS57143105A JP2846681A JP2846681A JPS57143105A JP S57143105 A JPS57143105 A JP S57143105A JP 2846681 A JP2846681 A JP 2846681A JP 2846681 A JP2846681 A JP 2846681A JP S57143105 A JPS57143105 A JP S57143105A
Authority
JP
Japan
Prior art keywords
vane
dovetail
rotary machine
metal piece
contact
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.)
Pending
Application number
JP2846681A
Other languages
Japanese (ja)
Inventor
Noriaki Hagiwara
Mitsuo Yoneyama
Haruo Miura
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2846681A priority Critical patent/JPS57143105A/en
Publication of JPS57143105A publication Critical patent/JPS57143105A/en
Pending 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
    • F01D5/26—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
    • 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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3092—Protective layers between blade root and rotor disc surfaces, e.g. anti-friction layers

Abstract

PURPOSE:To improve damping effect of the vane without reducing fluid performance of an axial-flow rotary machine in such a way that a laminate metal piece is inserted between a rotor and the dovetail of a vane, and both ends of the laminate metal piece are brought into contact with the appropriate region of the vane plane. CONSTITUTION:A laminate metal plate 7 equipped with a groove part 7a is inserted into a dovetail part 1 which is a connection of a vane 2 and a rotor in a rotary machine. At the part where the metal piece 7 is brought into contact with the dovetail part 1, it is made into almost the same length and width as the dovetail part 1, while at the part where it gets out of place from the dovetail parts on both end sides of the metal piece 7, the width is narrowed, it is brought into contact with the bent face of the vane surface under the pressure of the contact surface, and the gap to the vane surface is reduced so as not to bring turbulence of fluid. Thus, damping effect of the vane 1 can be at all times maximized within operating region, and fluid performance is in no case to be lowered.
JP2846681A 1981-03-02 1981-03-02 Vibration damping mechanism of vane in axial-flow rotary machine Pending JPS57143105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2846681A JPS57143105A (en) 1981-03-02 1981-03-02 Vibration damping mechanism of vane in axial-flow rotary machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2846681A JPS57143105A (en) 1981-03-02 1981-03-02 Vibration damping mechanism of vane in axial-flow rotary machine

Publications (1)

Publication Number Publication Date
JPS57143105A true JPS57143105A (en) 1982-09-04

Family

ID=12249425

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2846681A Pending JPS57143105A (en) 1981-03-02 1981-03-02 Vibration damping mechanism of vane in axial-flow rotary machine

Country Status (1)

Country Link
JP (1) JPS57143105A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6217306A (en) * 1985-07-12 1987-01-26 Mitsubishi Heavy Ind Ltd Rotary machine vane
US5490764A (en) * 1994-05-23 1996-02-13 General Electric Company Unshrouded blading for high bypass turbofan engines
US20220268164A1 (en) * 2019-07-19 2022-08-25 MTU Aero Engines AG Intermediate element for a blade/rotor disc connection in a rotor of a turbomachine, associated rotor for a turbomachine, and turbomachine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6217306A (en) * 1985-07-12 1987-01-26 Mitsubishi Heavy Ind Ltd Rotary machine vane
US5490764A (en) * 1994-05-23 1996-02-13 General Electric Company Unshrouded blading for high bypass turbofan engines
US20220268164A1 (en) * 2019-07-19 2022-08-25 MTU Aero Engines AG Intermediate element for a blade/rotor disc connection in a rotor of a turbomachine, associated rotor for a turbomachine, and turbomachine
US11905852B2 (en) * 2019-07-19 2024-02-20 MTU Aero Engines AG Intermediate element for a blade/rotor disc connection in a rotor of a turbomachine, associated rotor for a turbomachine, and turbomachine

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