GB994537A - Improvements in steam or gas turbine blading - Google Patents

Improvements in steam or gas turbine blading

Info

Publication number
GB994537A
GB994537A GB27110/63A GB2711063A GB994537A GB 994537 A GB994537 A GB 994537A GB 27110/63 A GB27110/63 A GB 27110/63A GB 2711063 A GB2711063 A GB 2711063A GB 994537 A GB994537 A GB 994537A
Authority
GB
United Kingdom
Prior art keywords
blades
blade
fitted
roots
twist
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
GB27110/63A
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
Brown Boveri und Cie AG Switzerland
BBC Brown Boveri France SA
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 Brown Boveri und Cie AG Switzerland, BBC Brown Boveri France SA filed Critical Brown Boveri und Cie AG Switzerland
Publication of GB994537A publication Critical patent/GB994537A/en
Expired 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
    • F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
    • F01D5/303—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot
    • F01D5/3038—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot the slot having inwardly directed abutment faces on both sides
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y10T29/49321—Assembling individual fluid flow interacting members, e.g., blades, vanes, buckets, on rotary support member

Landscapes

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

Abstract

994,537. Turbine blade mounting. BROWN, BOVERI & CO. Ltd. July 9, 1963 [July 11, 1962], No. 27110/63. Heading FIT. A method of fitting steam or gas turbine blades 3, having abutting parallellogram shaped tip shrouds 4 and fir-tree roots 1 in a circumferential channel in the rotor comprises introducing the roots of all but the last blade into the rotor channel and applying a twist to the blades 3 so as to reduce the space occupied by their shrouds 4 in the peripheral direction. The twist is applied to the blades 3 by a stirrup comprising a sector 9, offset screws 10 and an observation hole 13. Each pair of opposing screws 10 bears upon a wedge 11 mounted in a transverse groove in a temporary extension 4a of the shroud 4 of each blade 3 so as to exert a twisting movement upon the blade. Each stirrup covers about five blades 3 and successive segments of blades are acted on by a number of stirrups until all the fitted blades have been twisted to the required angle. The last blade is then fitted in the groove and divided spacing wedges 7 fitted between it and the roots 1 of adjacent blades and between the remaining blades. Wedges 11 are removed and shroud extensions 4a machined away. The construction effects vibration damping.
GB27110/63A 1962-07-11 1963-07-09 Improvements in steam or gas turbine blading Expired GB994537A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR903628A FR1382057A (en) 1962-07-11 1962-07-11 Further training in steam turbine fins

Publications (1)

Publication Number Publication Date
GB994537A true GB994537A (en) 1965-06-10

Family

ID=8782949

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27110/63A Expired GB994537A (en) 1962-07-11 1963-07-09 Improvements in steam or gas turbine blading

Country Status (7)

Country Link
US (1) US3328867A (en)
BE (1) BE634692A (en)
CH (1) CH404694A (en)
DE (1) DE1426778B1 (en)
FR (1) FR1382057A (en)
GB (1) GB994537A (en)
NL (1) NL295111A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602412A (en) * 1982-12-02 1986-07-29 Westinghouse Electric Corp. Method for assembling in a circular array turbine blades each with an integral shroud
EP1731713A3 (en) * 2005-06-02 2013-08-28 General Electric Company Methods and systems for assembling shrouded turbine bucket and tangential entry dovetail

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2337251A1 (en) * 1975-12-29 1977-07-29 Europ Turb Vapeur TURBOMACHINE MOBILE STAGE
FR2517739A1 (en) * 1981-12-09 1983-06-10 Snecma DEVICE FOR MOUNTING AND FIXING FOOTWEAR COMPRESSOR AND TURBINE HAMMER AND METHOD OF MOUNTING
US4474534A (en) * 1982-05-17 1984-10-02 General Dynamics Corp. Axial flow fan
US4576551A (en) * 1982-06-17 1986-03-18 The Garrett Corporation Turbo machine blading
US4533298A (en) * 1982-12-02 1985-08-06 Westinghouse Electric Corp. Turbine blade with integral shroud
US4643645A (en) * 1984-07-30 1987-02-17 General Electric Company Stage for a steam turbine
FR2612249B1 (en) * 1987-03-12 1992-02-07 Alsthom MOBILE BLADES FOR STEAM TURBINES
US4765046A (en) * 1987-05-22 1988-08-23 Westinghouse Electric Corp. Row assembly process for integral shroud blades
US5509784A (en) * 1994-07-27 1996-04-23 General Electric Co. Turbine bucket and wheel assembly with integral bucket shroud
DE19520274A1 (en) * 1995-06-02 1996-12-05 Abb Management Ag Device and method for assembling rotor blades
EP1028232A1 (en) * 1999-02-12 2000-08-16 ABB Alstom Power (Schweiz) AG Fastening of turbomachine rotor blades
DE59906856D1 (en) * 1999-02-12 2003-10-09 Alstom Switzerland Ltd Fastening rotor blades of a flow machine
DE10014189A1 (en) * 2000-03-23 2001-09-27 Alstom Power Nv Blade fastening for rotating machinery has blades fitted in slots without play or with pretensioning so that torsional moments acting on inner platform or blade roots oppose torsional moments acting upon outer platform or support wing
US6454534B1 (en) 2000-12-21 2002-09-24 General Electric Company Flush bucket cover
DE102005030516A1 (en) * 2005-06-28 2007-01-04 Man Turbo Ag Rotor for a turbine and method and apparatus for producing the rotor
DE102008051935A1 (en) * 2008-10-09 2010-04-15 Mtu Aero Engines Gmbh Method for mounting a blade ring for a rotor and blade ring thereto
DE102009052881A1 (en) 2009-11-13 2011-05-26 Mtu Aero Engines Gmbh Gas turbine blade for a turbomachine
ITFI20130117A1 (en) * 2013-05-21 2014-11-22 Nuovo Pignone Srl "TURBOMACHINE ROTOR ASSEMBLY AND METHOD"
EP3042737A1 (en) * 2015-01-12 2016-07-13 Siemens Aktiengesellschaft Method for the assembly of rotor blades on a rotor disc and tensioning device for carrying out such a method
RU167493U1 (en) * 2016-03-22 2017-01-10 Закрытое акционерное общество "Уральский турбинный завод" BANDAGE ASSEMBLY WITH A BODY OF STEAM TURBINES DIAPHRAGMS
JP7021027B2 (en) * 2018-08-07 2022-02-16 株式会社東芝 Turbine blades

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA468547A (en) * 1950-10-03 Albert Lombard Adrian Manufacture of guide vanes for axial-flow turbines and compressors
GB377593A (en) * 1931-02-17 1932-07-28 Asea Ab Method of and means for manufacturing blade rings for radial flow turbines
CH157414A (en) * 1931-09-01 1932-09-30 Oerlikon Maschf Blade lock on turbine blades.
US2198784A (en) * 1937-11-27 1940-04-30 Westinghouse Electric & Mfg Co Turbine blade vibration damper
US2220914A (en) * 1938-07-30 1940-11-12 Gen Electric Elastic fluid turbine bucket wheel
NL64087C (en) * 1946-05-04 1900-01-01
GB720802A (en) * 1953-03-10 1954-12-29 Parsons C A & Co Ltd Improvements in and relating to assembly of blades for turbines and compressors
CH349624A (en) * 1957-03-05 1960-10-31 Oerlikon Maschf Axial flow machine
DE1159965B (en) * 1961-08-10 1963-12-27 Bbc Brown Boveri & Cie Device for vibration damping on a turbine or compressor blade ring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602412A (en) * 1982-12-02 1986-07-29 Westinghouse Electric Corp. Method for assembling in a circular array turbine blades each with an integral shroud
EP1731713A3 (en) * 2005-06-02 2013-08-28 General Electric Company Methods and systems for assembling shrouded turbine bucket and tangential entry dovetail

Also Published As

Publication number Publication date
BE634692A (en) 1963-11-18
FR1382057A (en) 1964-12-18
US3328867A (en) 1967-07-04
CH404694A (en) 1965-12-31
NL295111A (en)
DE1426778B1 (en) 1969-11-20

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