JPS5738602A - Driving blade connecting apparatus - Google Patents

Driving blade connecting apparatus

Info

Publication number
JPS5738602A
JPS5738602A JP11345980A JP11345980A JPS5738602A JP S5738602 A JPS5738602 A JP S5738602A JP 11345980 A JP11345980 A JP 11345980A JP 11345980 A JP11345980 A JP 11345980A JP S5738602 A JPS5738602 A JP S5738602A
Authority
JP
Japan
Prior art keywords
coil springs
sleeve
driving blade
blades
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
JP11345980A
Other languages
Japanese (ja)
Inventor
Takaharu Sato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11345980A priority Critical patent/JPS5738602A/en
Publication of JPS5738602A publication Critical patent/JPS5738602A/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
    • F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
    • F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
    • 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
    • F01D5/3053—Fixing blades to rotors; Blade roots ; Blade spacers by means of pins
    • 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
    • F05D2250/20—Three-dimensional
    • F05D2250/25—Three-dimensional helical
    • 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
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/38—Retaining components in desired mutual position by a spring, i.e. spring loaded or biased towards a certain position

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE: To control vibration of the driving blade toward a tangential direction by setting a cocylindrical sleeve and coil springs for the purpose of making a freely inserting connection of mutual overhangs of the opposed blades.
CONSTITUTION: The plural pieces of blades are fixed to the disc part 2 by the pins 6. The connecting member 5 consisting of the coil springs 25 and the cocylindrical sleeve 35 and the overhangs 6 of blades 1 are combined. When a driving blade rotates, the sleeve 35 is pushed out upward by centrifugal force to come in contact with the lower outer circle of the coil springs 25. A contact area becomes large because contact is brought into at each winding layer of the coil springs. Thus, as a stretching force may be given to the connecting member 5 by the elasticity of the springs, the desired characteristic vibratory characteristics are possible to be acquired to lead to a control of vibration.
COPYRIGHT: (C)1982,JPO&Japio
JP11345980A 1980-08-20 1980-08-20 Driving blade connecting apparatus Pending JPS5738602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11345980A JPS5738602A (en) 1980-08-20 1980-08-20 Driving blade connecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11345980A JPS5738602A (en) 1980-08-20 1980-08-20 Driving blade connecting apparatus

Publications (1)

Publication Number Publication Date
JPS5738602A true JPS5738602A (en) 1982-03-03

Family

ID=14612769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11345980A Pending JPS5738602A (en) 1980-08-20 1980-08-20 Driving blade connecting apparatus

Country Status (1)

Country Link
JP (1) JPS5738602A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4722668A (en) * 1985-08-31 1988-02-02 Bbc Brown, Boveri & Company, Limited Device for damping blade vibrations in turbo-machines
US4784571A (en) * 1987-02-09 1988-11-15 Westinghouse Electric Corp. Apparatus and method for reducing blade flop in steam turbine
JP2014129816A (en) * 2014-02-27 2014-07-10 Mitsubishi Heavy Ind Ltd Moving blade and rotating machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4722668A (en) * 1985-08-31 1988-02-02 Bbc Brown, Boveri & Company, Limited Device for damping blade vibrations in turbo-machines
US4784571A (en) * 1987-02-09 1988-11-15 Westinghouse Electric Corp. Apparatus and method for reducing blade flop in steam turbine
JP2014129816A (en) * 2014-02-27 2014-07-10 Mitsubishi Heavy Ind Ltd Moving blade and rotating machine

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