EP0388286A1 - Schaufeln mit Hammerköpfen zur verbesserten Winkelpositionierung - Google Patents

Schaufeln mit Hammerköpfen zur verbesserten Winkelpositionierung Download PDF

Info

Publication number
EP0388286A1
EP0388286A1 EP90400670A EP90400670A EP0388286A1 EP 0388286 A1 EP0388286 A1 EP 0388286A1 EP 90400670 A EP90400670 A EP 90400670A EP 90400670 A EP90400670 A EP 90400670A EP 0388286 A1 EP0388286 A1 EP 0388286A1
Authority
EP
European Patent Office
Prior art keywords
blade
groove
blades
stilt
disc
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.)
Granted
Application number
EP90400670A
Other languages
English (en)
French (fr)
Other versions
EP0388286B1 (de
Inventor
Jacques Marie Pierre Stenneler
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.)
Safran Aircraft Engines SAS
Original Assignee
Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
SNECMA SAS
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 Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA, SNECMA SAS filed Critical Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
Publication of EP0388286A1 publication Critical patent/EP0388286A1/de
Application granted granted Critical
Publication of EP0388286B1 publication Critical patent/EP0388286B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the present invention relates to the fixing of the blades on the rotor discs of turbomachinery
  • the solution used to fix the blades in the rotor disc consists in having blades known as hammer, that is to say in the shape of a bulb which is housed in a circumferential groove of the disc rim whose section corresponds to that of the bulb.
  • FIGS. 1 and 2 of the present application which reflects a first solution according to the current state of the art, blades had been made comprising on the internal face of their platform grooves 1, 2 which cooperated with circumferential ribs 3, 4 of the rim 5 of the disc so that the platforms abut on the disc.
  • This solution has the disadvantage of requiring the thickening of the platform and the widening of the rim of the disc.
  • the present invention provides a remedy for these drawbacks by providing a solution which ensures good circumferential guidance of the blade while avoiding the use of rim ribs and the corresponding grooves of the disc, or platforms with circular edges. .
  • the subject of the invention is therefore a mounting device with improved angular positioning of hammer foot vanes in a compressor or turbine rotor, the rim of the rotor disc comprising a circumferential groove opening out on the circumference of the disc in a groove of reduced width, groove in which blades are maintained comprising a blade fixed on a rectangular platform extended by a stilt at the end of which is fixed, according to the longitudinal plane of symmetry of the platform, a bulbous foot of reduced circumferential width capable of cooperating with the groove, characterized in that the stilt of the blade extends over the entire circumferential width of the blade and cooperates with the groove of the rim of the disc to guide the blade.
  • the blade has a blade 6 and a platform 7 under which is machined, or come from the foundry, a bulb 8 forming the foot blade intended to secure the shaft in the corresponding groove 9 of the disc.
  • the bulb 8 is connected to the platform 7 by a stilt 10 which crosses the groove 11, of reduced width which opens out from the groove 9 towards the periphery of the rim of the disc.
  • the stilt 10 is extended on either side of the bulb 8, over the entire circumferential width of the blade so that the upstream face 10a and the downstream face 10b cooperate with the internal edges of the circumferential groove 11 of the rim and provide precise guidance of the blade on the disc, the guidance being greatly improved by the fact that it is exerted over the entire circumferential width of the blade.
  • the stilt has over its entire length, that is to say over the entire circumferential width of the platform, a constant radial height and guidance is provided over this entire length.
  • recesses 12 have been made in the stilt 10 on each side of the bulb so that only bosses 110 remain at each end of the platform.
  • the quality of the dawn guidance is respected while providing additional lightening of the dawn.
  • the invention finds its interest in compressors of turbomachines, in particular at high pressure, of small diameter and of small pitch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP90400670A 1989-03-15 1990-03-14 Schaufeln mit Hammerköpfen zur verbesserten Winkelpositionierung Expired - Lifetime EP0388286B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8903374 1989-03-15
FR8903374A FR2644524A1 (fr) 1989-03-15 1989-03-15 Aubes a pied marteau a positionnement angulaire ameliore

Publications (2)

Publication Number Publication Date
EP0388286A1 true EP0388286A1 (de) 1990-09-19
EP0388286B1 EP0388286B1 (de) 1992-06-03

Family

ID=9379698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90400670A Expired - Lifetime EP0388286B1 (de) 1989-03-15 1990-03-14 Schaufeln mit Hammerköpfen zur verbesserten Winkelpositionierung

Country Status (4)

Country Link
US (1) US5044886A (de)
EP (1) EP0388286B1 (de)
DE (1) DE69000121T2 (de)
FR (1) FR2644524A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0530097A1 (de) * 1991-08-28 1993-03-03 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Turbomaschinenrotor mit Winkelpositionierung der Schaufeln
EP2441921A1 (de) * 2010-10-12 2012-04-18 Siemens Aktiengesellschaft Turbomaschinenrotorschaufel mit Einstellerhebungen
EP2075417B1 (de) * 2007-12-27 2016-04-06 Techspace Aero Plattform für ein beschaufeltes Laufrad einer Strömungsmaschine, beschaufeltes Laufrad und Kompressor oder Strömungsmaschine, die ein solches Laufrad umfassen

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5271718A (en) * 1992-08-11 1993-12-21 General Electric Company Lightweight platform blade
GB2313162B (en) * 1996-05-17 2000-02-16 Rolls Royce Plc Bladed rotor
US6736602B2 (en) * 2002-07-31 2004-05-18 United Technologies Corporation Hollow fan hub under blade bumper
FR2856728B1 (fr) * 2003-06-27 2005-10-28 Snecma Moteurs Aube de compresseur de turboreacteur
US8888459B2 (en) * 2011-08-23 2014-11-18 General Electric Company Coupled blade platforms and methods of sealing
JP6434780B2 (ja) * 2014-11-12 2018-12-05 三菱日立パワーシステムズ株式会社 タービン用ロータアセンブリ、タービン、及び、動翼

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB137379A (en) * 1919-01-16 1920-01-15 Vickers Ltd Improvements relating to turbine blades
US2295012A (en) * 1941-03-08 1942-09-08 Westinghouse Electric & Mfg Co Turbine blading
FR1192696A (fr) * 1957-03-05 1959-10-28 Oerlikon Maschf Turbomachine axiale
US3902824A (en) * 1974-07-29 1975-09-02 Gen Motors Corp Blade lock
EP0081436A1 (de) * 1981-12-09 1983-06-15 Societe Nationale D'etude Et De Construction De Moteurs D'aviation, "S.N.E.C.M.A." Verdichter- oder Turbinenrotor, dessen Rad die mit einem Fuss des Hammerkopftyps versehenen Schaufeln trägt, und Montageverfahren eines solchen Rotors
GB2119026A (en) * 1981-03-25 1983-11-09 Rolls Royce Aerofoil blade mounting
FR2616480A1 (fr) * 1987-06-10 1988-12-16 Snecma Dispositif de verrouillage d'aubes a pied marteau sur un disque de turbomachine et procedes de montage et de demontage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4464096A (en) * 1979-11-01 1984-08-07 United Technologies Corporation Self-actuating rotor seal
US4460315A (en) * 1981-06-29 1984-07-17 General Electric Company Turbomachine rotor assembly
US4878811A (en) * 1988-11-14 1989-11-07 United Technologies Corporation Axial compressor blade assembly

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB137379A (en) * 1919-01-16 1920-01-15 Vickers Ltd Improvements relating to turbine blades
US2295012A (en) * 1941-03-08 1942-09-08 Westinghouse Electric & Mfg Co Turbine blading
FR1192696A (fr) * 1957-03-05 1959-10-28 Oerlikon Maschf Turbomachine axiale
US3902824A (en) * 1974-07-29 1975-09-02 Gen Motors Corp Blade lock
GB2119026A (en) * 1981-03-25 1983-11-09 Rolls Royce Aerofoil blade mounting
EP0081436A1 (de) * 1981-12-09 1983-06-15 Societe Nationale D'etude Et De Construction De Moteurs D'aviation, "S.N.E.C.M.A." Verdichter- oder Turbinenrotor, dessen Rad die mit einem Fuss des Hammerkopftyps versehenen Schaufeln trägt, und Montageverfahren eines solchen Rotors
FR2616480A1 (fr) * 1987-06-10 1988-12-16 Snecma Dispositif de verrouillage d'aubes a pied marteau sur un disque de turbomachine et procedes de montage et de demontage

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0530097A1 (de) * 1991-08-28 1993-03-03 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Turbomaschinenrotor mit Winkelpositionierung der Schaufeln
FR2680828A1 (fr) * 1991-08-28 1993-03-05 Sev Motorola Rotor de turbomachine a positionnement angulaire ameliore des aubes.
EP2075417B1 (de) * 2007-12-27 2016-04-06 Techspace Aero Plattform für ein beschaufeltes Laufrad einer Strömungsmaschine, beschaufeltes Laufrad und Kompressor oder Strömungsmaschine, die ein solches Laufrad umfassen
EP2441921A1 (de) * 2010-10-12 2012-04-18 Siemens Aktiengesellschaft Turbomaschinenrotorschaufel mit Einstellerhebungen
WO2012048957A1 (en) * 2010-10-12 2012-04-19 Siemens Aktiengesellschaft Turbomachine rotor with blade roots with adjusting protrusions
US9664054B2 (en) 2010-10-12 2017-05-30 Siemens Aktiengesellschaft Turbomachine rotor with blade roots with adjusting protrusions

Also Published As

Publication number Publication date
EP0388286B1 (de) 1992-06-03
DE69000121D1 (de) 1992-07-09
US5044886A (en) 1991-09-03
FR2644524A1 (fr) 1990-09-21
DE69000121T2 (de) 1993-01-14

Similar Documents

Publication Publication Date Title
EP0378474B1 (de) Turbomaschinenrotor mit Einrichtung zur Schaufelbefestigung
CA2518355C (fr) Retenue des clavettes de centrage des anneaux sous aubes de stator a calage variable d'un moteur a turbine a gaz
FR2669686A1 (fr) Rotor de soufflante avec aubes sans plates-formes et sabots reconstituant le profil de veine.
EP0089272A1 (de) Turbinenrotor mit Schwingungsdämpfer für die Turbinenschaufeln
CA2860540C (fr) Secteur angulaire de redresseur a amortissement de vibrations par coin pour compresseur de turbomachine
EP0214876B1 (de) Mehrzweck-Labyrinthträgerscheibe für einen Turbomaschinenrotor
EP1406019B1 (de) Trommelrotor für eine Turbomaschine
CA2885650C (fr) Carter et roue a aubes de turbomachine
FR2814205A1 (fr) Turbomachine a veine d'ecoulement ameliore
EP1496266B1 (de) Verbindung zwischen Schaufelscheiben eines Verdichterrotors
EP0388286B1 (de) Schaufeln mit Hammerköpfen zur verbesserten Winkelpositionierung
EP2366061A1 (de) Turbinenrad mit einem axialrückhaltesystem für schaufeln
FR3085714A1 (fr) Rotor de turbomachine comportant des moyens limitant les mouvements de l'aube dans le disque de rotor
FR2988787A1 (fr) Redresseur a calage variable pour compresseur de turbomachine comprenant deux anneaux internes
EP3201438B1 (de) Laufschaufel einer turbomaschine mit einem flansch, der an einer sperrkerbe in der rotorscheibe anliegt
EP1469165B1 (de) Verminderung des Blattspitzenspiels bei einer Gasturbine
CA2577502A1 (fr) Roue de rotor de turbomachine
FR3091553B1 (fr) Aube destinée à être montée sur un disque de rotor d’une turbomachine
FR3074839B1 (fr) Aube multipale de rotor de turbomachine et rotor la comprenant
WO2009153478A2 (fr) Couvercle de compresseur de turbomoteur a butee axiale
EP1134361B1 (de) Turbomaschine mit einer Vorrichtung zur Unterdrückung von Schwingungen
FR3117534A1 (fr) Rotor de soufflante à aubes à calage variable.
WO2023041868A1 (fr) Aube mobile pour turbine de turbomachine, comprenant une échasse équipée d'excroissances de retenue radiale de l'aube
CA2472317A1 (fr) Aube de compresseur de turboreacteur
FR3146949A1 (fr) ROUE AUBAGEE POUR TURBOMACHINE D’AERONEF, COMPRENANT UN DISPOSITIF D’AMORTISSEMENT DYNAMIQUE AMELIORE, EQUIPEe DE SECTEURS ANGULAIRES DE ROUE A TALONS FIXES ET A TALONS MOBILES

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19900403

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 19911010

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 69000121

Country of ref document: DE

Date of ref document: 19920709

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990209

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19990318

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19990528

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000314

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000314

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001130

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010103