GB561897A - Improvements in or relating to vibration damping means for turbine blades - Google Patents

Improvements in or relating to vibration damping means for turbine blades

Info

Publication number
GB561897A
GB561897A GB4430/42A GB443042A GB561897A GB 561897 A GB561897 A GB 561897A GB 4430/42 A GB4430/42 A GB 4430/42A GB 443042 A GB443042 A GB 443042A GB 561897 A GB561897 A GB 561897A
Authority
GB
United Kingdom
Prior art keywords
cavity
blade
class
iii
relating
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
Application number
GB4430/42A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International 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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB561897A publication Critical patent/GB561897A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

561,897. Turbines. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. April 2, 1942, No. 4430. Convention date, March 8, 1941. [Class 110 (iii)] [Also in Group XXXII] A vibration damper for a turbine blade comprises a heavy body 15 having a curved surface mating with a similarly curved bowl 14 forming the axis-facing end of a cavity 12 located at the outer end of the blade 10. The cavity is partly filled with a viscous medium which is squeezed between the body 15 and the slightly larger bowl 14 as the walls of the cavity 12 vibrate. The body 15 may consist of a ball or of a roller and two or more may be provided for each blade. When a plurality of rollers are fitted, they may be located at right angles to one another. The damper may form a unit 19 secured by screwing into the turbine wheel shroud 13. Specification 337,466, [Class 108 (iii)], is referred to.
GB4430/42A 1941-03-08 1942-04-02 Improvements in or relating to vibration damping means for turbine blades Expired GB561897A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US561897XA 1941-03-08 1941-03-08

Publications (1)

Publication Number Publication Date
GB561897A true GB561897A (en) 1944-06-09

Family

ID=22002767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4430/42A Expired GB561897A (en) 1941-03-08 1942-04-02 Improvements in or relating to vibration damping means for turbine blades

Country Status (1)

Country Link
GB (1) GB561897A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474095A1 (en) * 1980-01-17 1981-07-24 Rolls Royce VIBRATION DAMPING DEVICE FOR MOBILE BLADES OF A GAS TURBINE ENGINE
US4485906A (en) * 1981-07-31 1984-12-04 Sachs-Systemtechnik Gmbh Torsional vibration damper, particularly for the clutch disk of a motor vehicle friction disk clutch
EP0147694A2 (en) * 1983-12-10 1985-07-10 Johann Klug Fly wheel
GB2305220A (en) * 1981-07-02 1997-04-02 Secr Defence Ships propeller dampers
EP1138975A1 (en) * 2000-03-27 2001-10-04 Tokai Rubber Industries, Ltd. Vibration damping-device for vehicles
WO2013162887A1 (en) 2012-04-24 2013-10-31 United Technologies Corporation Airfoil with break-way, free-floating damper member
WO2013163049A1 (en) 2012-04-24 2013-10-31 United Technologies Corporation Airfoil including loose damper
CN110671155A (en) * 2019-10-18 2020-01-10 西安交通大学 Self-adaptive variable working condition optimal positive pressure damping blade structure and design method

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474095A1 (en) * 1980-01-17 1981-07-24 Rolls Royce VIBRATION DAMPING DEVICE FOR MOBILE BLADES OF A GAS TURBINE ENGINE
GB2305220A (en) * 1981-07-02 1997-04-02 Secr Defence Ships propeller dampers
GB2305220B (en) * 1981-07-02 1998-01-07 Secr Defence Propeller dampers
US4485906A (en) * 1981-07-31 1984-12-04 Sachs-Systemtechnik Gmbh Torsional vibration damper, particularly for the clutch disk of a motor vehicle friction disk clutch
EP0147694A2 (en) * 1983-12-10 1985-07-10 Johann Klug Fly wheel
EP0147694A3 (en) * 1983-12-10 1985-11-27 Johann Klug Fly wheel
EP1138975A1 (en) * 2000-03-27 2001-10-04 Tokai Rubber Industries, Ltd. Vibration damping-device for vehicles
US6719108B2 (en) 2000-03-27 2004-04-13 Tokai Rubber Industries, Ltd. Virbration damping device for vehicles
WO2013162887A1 (en) 2012-04-24 2013-10-31 United Technologies Corporation Airfoil with break-way, free-floating damper member
WO2013163049A1 (en) 2012-04-24 2013-10-31 United Technologies Corporation Airfoil including loose damper
CN104246139A (en) * 2012-04-24 2014-12-24 联合工艺公司 Airfoil with break-way, free-floating damper member
EP2841709A4 (en) * 2012-04-24 2015-04-29 United Technologies Corp Airfoil with break-way, free-floating damper member
EP2841705A4 (en) * 2012-04-24 2015-04-29 United Technologies Corp Airfoil including loose damper
US9249668B2 (en) 2012-04-24 2016-02-02 United Technologies Corporation Airfoil with break-way, free-floating damper member
US9267380B2 (en) 2012-04-24 2016-02-23 United Technologies Corporation Airfoil including loose damper
US10151204B2 (en) 2012-04-24 2018-12-11 United Technologies Corporation Airfoil including loose damper
EP3633149A1 (en) * 2012-04-24 2020-04-08 United Technologies Corporation Airfoil, corresponding turbine engine and method for processing an airfoil
CN110671155A (en) * 2019-10-18 2020-01-10 西安交通大学 Self-adaptive variable working condition optimal positive pressure damping blade structure and design method
CN110671155B (en) * 2019-10-18 2021-01-19 西安交通大学 Self-adaptive variable working condition optimal positive pressure damping blade structure and design method

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