GB671960A - Improvements in or relating to attachment means for rotor blades - Google Patents

Improvements in or relating to attachment means for rotor blades

Info

Publication number
GB671960A
GB671960A GB2195149A GB2195149A GB671960A GB 671960 A GB671960 A GB 671960A GB 2195149 A GB2195149 A GB 2195149A GB 2195149 A GB2195149 A GB 2195149A GB 671960 A GB671960 A GB 671960A
Authority
GB
United Kingdom
Prior art keywords
key
rotor
blades
blade
directed
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
GB2195149A
Inventor
Frederick William Whitehead
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.)
Bristol Aeroplane Co Ltd
Original Assignee
Bristol Aeroplane 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 Bristol Aeroplane Co Ltd filed Critical Bristol Aeroplane Co Ltd
Priority to GB2195149A priority Critical patent/GB671960A/en
Publication of GB671960A publication Critical patent/GB671960A/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
    • F01D5/32—Locking, e.g. by final locking blades or keys
    • F01D5/323—Locking of axial insertion type blades by means of a key or the like parallel to the axis of the rotor
    • 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

Abstract

671,960. Turbine blades. BRISTOL AEROPLANE CO., Ltd. July 10, 1950 [Aug. 23, 1949], No. 21951/49. Class 110(iii) [Also in Group XXV] In a turbine rotor in which the blades are mounted in axially-directed slots, keys 19 are provided between each pair of adjacent blades near the peripheral adge of the rotor, the key being prevented from circumferential movement by the blades and from radial outward movement by an overhanging part of a blade, and the key engages the rotor so that it is prevented from movement axially thereof and is engaged by a blade which is thereby prevented from axial movement relatively to the key. The blades have fir-tree root fixings with flared parts 17 forming a triangular arch above the periphery of the rotor disc, defining a space 18. The key is of triangular section, the base 20 of which engages the rotor periphery, and has two inwardly-directed lugs 22 which engage circumferential grooves 24 in the rotor disc. At one side of the triangular section is an outwardly-directed block 23, the sides and ends of which are normal to the base 20, which engages a correspondingly-shaped recess 25 in the blade root The last key to be inserted has only one inwardly-directed lug 22 and is inserted in an axial-direction with the last blade, the end of the key then being bent inwardly into the groove 24 to complete the assembly.
GB2195149A 1949-08-23 1949-08-23 Improvements in or relating to attachment means for rotor blades Expired GB671960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2195149A GB671960A (en) 1949-08-23 1949-08-23 Improvements in or relating to attachment means for rotor blades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2195149A GB671960A (en) 1949-08-23 1949-08-23 Improvements in or relating to attachment means for rotor blades

Publications (1)

Publication Number Publication Date
GB671960A true GB671960A (en) 1952-05-14

Family

ID=10171496

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2195149A Expired GB671960A (en) 1949-08-23 1949-08-23 Improvements in or relating to attachment means for rotor blades

Country Status (1)

Country Link
GB (1) GB671960A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2867408A (en) * 1953-04-10 1959-01-06 Parsons C A & Co Ltd Axial locking of rotor blades for turbines and the like
US2912222A (en) * 1952-08-02 1959-11-10 Gen Electric Turbomachine blading and method of manufacture thereof
US2916257A (en) * 1953-12-30 1959-12-08 Gen Electric Damping turbine buckets
US2942842A (en) * 1956-06-13 1960-06-28 Gen Motors Corp Turbine blade lock
US3008689A (en) * 1954-08-12 1961-11-14 Rolls Royce Axial-flow compressors and turbines
US3037741A (en) * 1958-12-29 1962-06-05 Gen Electric Damping turbine buckets
US3112914A (en) * 1960-08-01 1963-12-03 Gen Motors Corp Turbine rotor
US3198485A (en) * 1963-09-26 1965-08-03 Gen Motors Corp Turbine blade lock
US3202398A (en) * 1962-11-05 1965-08-24 James E Webb Locking device for turbine rotor blades
US3248081A (en) * 1964-12-29 1966-04-26 Gen Electric Axial locating means for airfoils
US4029436A (en) * 1975-06-17 1977-06-14 United Technologies Corporation Blade root feather seal
FR2507679A1 (en) * 1981-06-12 1982-12-17 Snecma DEVICE FOR LOCKING A TURBOMACHINE ROTOR BLADE
US4676723A (en) * 1986-03-26 1987-06-30 Westinghouse Electric Corp. Locking system for a turbine side entry blade
US5226784A (en) * 1991-02-11 1993-07-13 General Electric Company Blade damper
US5518369A (en) * 1994-12-15 1996-05-21 Pratt & Whitney Canada Inc. Gas turbine blade retention
US6109877A (en) * 1998-11-23 2000-08-29 Pratt & Whitney Canada Corp. Turbine blade-to-disk retention device
EP1818506A1 (en) 2006-02-08 2007-08-15 Siemens Aktiengesellschaft HCF stress reduction in fir-trees
WO2020190280A1 (en) * 2019-03-19 2020-09-24 Dresser-Rand Company Turbines and corresponding method of dampening

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2912222A (en) * 1952-08-02 1959-11-10 Gen Electric Turbomachine blading and method of manufacture thereof
US2867408A (en) * 1953-04-10 1959-01-06 Parsons C A & Co Ltd Axial locking of rotor blades for turbines and the like
US2916257A (en) * 1953-12-30 1959-12-08 Gen Electric Damping turbine buckets
US3008689A (en) * 1954-08-12 1961-11-14 Rolls Royce Axial-flow compressors and turbines
US2942842A (en) * 1956-06-13 1960-06-28 Gen Motors Corp Turbine blade lock
US3037741A (en) * 1958-12-29 1962-06-05 Gen Electric Damping turbine buckets
US3112914A (en) * 1960-08-01 1963-12-03 Gen Motors Corp Turbine rotor
US3202398A (en) * 1962-11-05 1965-08-24 James E Webb Locking device for turbine rotor blades
US3198485A (en) * 1963-09-26 1965-08-03 Gen Motors Corp Turbine blade lock
US3248081A (en) * 1964-12-29 1966-04-26 Gen Electric Axial locating means for airfoils
US4029436A (en) * 1975-06-17 1977-06-14 United Technologies Corporation Blade root feather seal
FR2507679A1 (en) * 1981-06-12 1982-12-17 Snecma DEVICE FOR LOCKING A TURBOMACHINE ROTOR BLADE
EP0068923A1 (en) * 1981-06-12 1983-01-05 Societe Nationale D'etude Et De Construction De Moteurs D'aviation, "S.N.E.C.M.A." Locking device for a rotor blade of a turbo machine
US4527952A (en) * 1981-06-12 1985-07-09 S.N.E.C.M.A. Device for locking a turbine rotor blade
US4676723A (en) * 1986-03-26 1987-06-30 Westinghouse Electric Corp. Locking system for a turbine side entry blade
US5226784A (en) * 1991-02-11 1993-07-13 General Electric Company Blade damper
US5518369A (en) * 1994-12-15 1996-05-21 Pratt & Whitney Canada Inc. Gas turbine blade retention
US6109877A (en) * 1998-11-23 2000-08-29 Pratt & Whitney Canada Corp. Turbine blade-to-disk retention device
EP1818506A1 (en) 2006-02-08 2007-08-15 Siemens Aktiengesellschaft HCF stress reduction in fir-trees
WO2020190280A1 (en) * 2019-03-19 2020-09-24 Dresser-Rand Company Turbines and corresponding method of dampening

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