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GB1015698A - Improvements in rotor blade locking means for turbines or compressors - Google Patents

Improvements in rotor blade locking means for turbines or compressors

Info

Publication number
GB1015698A
GB1015698A GB27529/64A GB2752964A GB1015698A GB 1015698 A GB1015698 A GB 1015698A GB 27529/64 A GB27529/64 A GB 27529/64A GB 2752964 A GB2752964 A GB 2752964A GB 1015698 A GB1015698 A GB 1015698A
Authority
GB
United Kingdom
Prior art keywords
lug
groove
locking
engage
blades
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
GB27529/64A
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 GB1015698A publication Critical patent/GB1015698A/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
    • F01D5/30—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
    • 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
    • F01D5/32—Locking, e.g. by final locking blades or keys

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1,015,698. Fixing turbine or compressor blades. GENERAL ELECTRIC CO. July 3, 1964 [Oct. 24, 1963], No. 27529/64. Heading FIT. In a turbine or compressor bladed rotor wherein the roots of a ring of blades are retained in a dovetail groove extending circumferentially round the rotor drum, at least one locking lug is provided to prevent circumferential movement of the blades, the or each lug being located in a locking slot extending transversely of the groove and being provided with a jacking member which is operable to move the or each lug radially outwardly so that axially spaced (with respect to the rotor drum) end walls of eared portions of the or each lug engage the dovetail sides of the groove, circumferentially spaced side walls of the or each lug engage load bearing surfaces of the or each locking slot, and an upper portion of the or each lug is received in a cutout formed in the abutting edges of two adjacent blade platforms. As shown, two lugs 54, one shown in Fig. 1, are provided to lock a ring of blades 42 having their roots 52 retained in a groove 14 formed in an enlarged portion 12 of the rotor drum 10, the groove 14 having two locking slots 30 each formed with load bearing surfaces 32. Each lug, Fig. 2, includes a jacking screw 68 located in a threaded hole extending therethrough, an upper portion 56, side walls 62, and eared portions 64 having end walls 66. The blade roots and the two lugs are loaded into the groove 14 through a slot 28 located between the two locking slots 30. The blade platforms 46 are received in an annular channel 16. Four adjacent blade platforms 40a-40d located over the loading and locking slots are, as shown in Fig. 6, provided with left and right-hand contents forming two rectangular openings 50a, 50b. Each lug jacking screw 68 is operated so that its radially inner end bears on the bottom 24, Fig. 1, of the groove 14 to move each lug radially outwards until lug surfaces 66 abut the groove dovetail walls 22, whereupon lug side walls 62 engage the locking slot load bearing surfaces 32, and the upper portions 56 of the lugs 54a, 54b, Fig. 6, engage in the openings 50a, 50b.
GB27529/64A 1963-10-24 1964-07-03 Improvements in rotor blade locking means for turbines or compressors Expired GB1015698A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US318558A US3216700A (en) 1963-10-24 1963-10-24 Rotor blade locking means

Publications (1)

Publication Number Publication Date
GB1015698A true GB1015698A (en) 1966-01-05

Family

ID=23238682

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27529/64A Expired GB1015698A (en) 1963-10-24 1964-07-03 Improvements in rotor blade locking means for turbines or compressors

Country Status (3)

Country Link
US (1) US3216700A (en)
BE (1) BE650583A (en)
GB (1) GB1015698A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504975A1 (en) * 1981-04-29 1982-11-05 Rolls Royce DEVICE FOR FIXING BLADES OF ROTORS OF TURBOMACHINES
DE3248021A1 (en) * 1981-12-30 1983-09-01 Rolls-Royce Ltd., London FILLING PIECE FOR LOCKING A BLADE RIM IN A BLADE HOLDING GROOVE OF A FLUID MACHINE ROTOR
GB2139709A (en) * 1983-05-09 1984-11-14 Gen Electric Dovetail spacers with balance weight
FR2576635A1 (en) * 1985-01-25 1986-08-01 Gen Electric PLATFORM OF DAWN.
EP1321630A2 (en) * 2001-12-21 2003-06-25 Nuovo Pignone Holding S.P.A. System for connecting and locking rotor blades of an axial compressor

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3383094A (en) * 1967-01-19 1968-05-14 Gen Electric Rotor blade locking means
DE2002469C3 (en) * 1970-01-21 1978-03-30 Motoren- Und Turbinen-Union Muenchen Gmbh, 8000 Muenchen Blade fastening in a dovetail-shaped circumferential groove of a rotor of flow machines with axial flow, in particular gas turbine jet engines
US3923420A (en) * 1973-04-30 1975-12-02 Gen Electric Blade platform with friction damping interlock
US3954350A (en) * 1974-06-14 1976-05-04 Motoren-Und Turbinen-Union Munchen Gmbh Rotor having means for locking rotor blades to rotor disk
FR2282038A1 (en) * 1974-08-13 1976-03-12 Mtu Muenchen Gmbh DEVICE FOR FIXING THE MOBILE BLADES OF TURBOMACHINES
US4645425A (en) * 1984-12-19 1987-02-24 United Technologies Corporation Turbine or compressor blade mounting
US4743166A (en) * 1984-12-20 1988-05-10 General Electric Company Blade root seal
US4859149A (en) * 1989-03-10 1989-08-22 General Motors Corporation Blade locking system
US5522706A (en) * 1994-10-06 1996-06-04 General Electric Company Laser shock peened disks with loading and locking slots for turbomachinery
FR2810366B1 (en) 2000-06-15 2002-10-11 Snecma Moteurs DEVICE FOR LOCKING BLADES WITH HAMMER FASTENERS ON A DISC
GB2364554B (en) * 2000-07-07 2004-04-07 Alstom Power Nv Turbine disc
US6981910B1 (en) * 2004-07-30 2006-01-03 Goff James R Throwing wheel assembly
DE102005025086B4 (en) * 2005-05-26 2014-07-10 Rolls-Royce Deutschland Ltd & Co Kg Arrangement for fine balancing the rotor of a gas turbine engine
FR2886336B1 (en) * 2005-05-26 2007-08-24 Snecma Moteurs Sa IMPROVEMENT TO A ROTOR AUBAGEE WHEEL TO ENHANCE THE LOCKING OF AUBES
GB0908502D0 (en) * 2009-05-19 2009-06-24 Rolls Royce Plc A balanced rotor for a turbine engine
CH703997A1 (en) * 2010-10-27 2012-04-30 Alstom Technology Ltd Blade assembly, in particular vane.
JP5730085B2 (en) * 2011-03-17 2015-06-03 三菱日立パワーシステムズ株式会社 Rotor structure
US8894372B2 (en) * 2011-12-21 2014-11-25 General Electric Company Turbine rotor insert and related method of installation
US8899933B2 (en) * 2012-01-03 2014-12-02 General Electric Company Rotor blade mounting
US8932023B2 (en) 2012-01-13 2015-01-13 General Electric Company Rotor wheel for a turbomachine
EP2617945B1 (en) 2012-01-23 2018-03-14 MTU Aero Engines GmbH Rotor for a turbo machine and manufacturing process
US20140286782A1 (en) * 2012-08-07 2014-09-25 Solar Turbines Incorporated Turbine blade staking pin
EP2719866B1 (en) * 2012-10-12 2018-12-05 Safran Aero Boosters SA Rotor disk of a turbomachine comprising a lock for blades

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE490366A (en) * 1948-09-17
GB639320A (en) * 1948-10-22 1950-06-28 Frank Rosslyn Harris Improvements in or relating to the mounting of turbine, compressor or like blades
US3088708A (en) * 1961-12-29 1963-05-07 Seymour J Feinberg Compressor blade locking device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504975A1 (en) * 1981-04-29 1982-11-05 Rolls Royce DEVICE FOR FIXING BLADES OF ROTORS OF TURBOMACHINES
DE3248021A1 (en) * 1981-12-30 1983-09-01 Rolls-Royce Ltd., London FILLING PIECE FOR LOCKING A BLADE RIM IN A BLADE HOLDING GROOVE OF A FLUID MACHINE ROTOR
GB2139709A (en) * 1983-05-09 1984-11-14 Gen Electric Dovetail spacers with balance weight
FR2576635A1 (en) * 1985-01-25 1986-08-01 Gen Electric PLATFORM OF DAWN.
EP1321630A2 (en) * 2001-12-21 2003-06-25 Nuovo Pignone Holding S.P.A. System for connecting and locking rotor blades of an axial compressor
EP1321630A3 (en) * 2001-12-21 2005-01-12 Nuovo Pignone Holding S.P.A. System for connecting and locking rotor blades of an axial compressor

Also Published As

Publication number Publication date
US3216700A (en) 1965-11-09
BE650583A (en) 1964-11-03

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