EP1180580B1 - Dispositif de rétention d'une flasque annulaire contre une face radiale d'un disque à aubes - Google Patents

Dispositif de rétention d'une flasque annulaire contre une face radiale d'un disque à aubes Download PDF

Info

Publication number
EP1180580B1
EP1180580B1 EP01402146A EP01402146A EP1180580B1 EP 1180580 B1 EP1180580 B1 EP 1180580B1 EP 01402146 A EP01402146 A EP 01402146A EP 01402146 A EP01402146 A EP 01402146A EP 1180580 B1 EP1180580 B1 EP 1180580B1
Authority
EP
European Patent Office
Prior art keywords
foot
recess
disc
face
flange
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 - Lifetime
Application number
EP01402146A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1180580A1 (fr
Inventor
Jean-Baptiste Arilla
Jean-Philippe Maffre
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
SNECMA Moteurs 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 SNECMA Moteurs SA filed Critical SNECMA Moteurs SA
Publication of EP1180580A1 publication Critical patent/EP1180580A1/fr
Application granted granted Critical
Publication of EP1180580B1 publication Critical patent/EP1180580B1/fr
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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/005—Sealing means between non relatively rotating elements
    • F01D11/006—Sealing the gap between rotor blades or blades and 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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
    • F01D5/3015—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type with side plates

Definitions

  • the invention relates to a device for retaining a flange ring against a radial face of a disk.
  • a device for retaining a flange ring against a radial face of a disc this disc presenting in said radial face an annular recess delimited by several walls one of which is formed by a face of a flange extending radially outwardly, and the flange having, in its radially inside, an annular base bearing for example sliding against the radially outer wall of the recess and a foot that extends radially inwards in the recess from the inner end of the base, said device comprising an annular retaining ring slotted disposed in the recess and having a face abutting against the face of the flange, this ring having on its radially outer face a rabbet to receive a portion of the foot to hold the flange against the radial face of the disc.
  • Such a device is known in particular from FR A 2 485 117.
  • the flange is provided to prevent axial displacement fir-type blade blades whose feet are mounted in notches provided at the periphery of the disc.
  • the implementation of the device for fixing the flange according to FR A 2,485,117 requires special tools to compress the ring of retained in order to allow the establishment of the flange.
  • the object of the invention is to propose a retention device axial flange that allows a simplified mounting of the flange.
  • Another object of the invention is to allow a mounting of the flange on the disc without special tools to compress the ring retained, which reduces the costs of the necessary equipment for maintenance.
  • Another object of the invention is to propose a device for Axial retention of the flange which makes it possible to increase the service life of the disc.
  • the invention achieves its goal by the fact that the foot of the flange and the retaining ring comprise annular chamfers vis-à-vis intended to allow the radial compression of the ring beforehand disposed in the recess during the axial sliding of the base in the recess when mounting the flange on the disc.
  • a disk of rotor of a gas turbine engine having an axis of rotation 2.
  • This disc 1 has, in its radial face 3, a recess 10 delimited by a radially outer wall 4, a wall axially inner 5, a radially inner wall 6, and the inner face 7 an annular flange 8 which extends radially outwards from of the radially inner wall 6.
  • the upper end 9 of the rim 8 is radially distant from the radially outer wall 4, in order to provide an annular opening 11 for access into the recess 10.
  • the disc 1 has at its periphery notches axially designed to receive blade roots not shown on the drawings.
  • blade roots are immobilized axially by the portion 12 of an annular flange 13 whose part radially 14 has an annular base 15 extending axially in the outer region of the recess 10 and a foot 16 which extends radially inwardly of the recess 10 from the end internal of the annular base 15.
  • the outer diameter of the annular base 15 is substantially equal to the diameter of the radially outer wall 4 of the recess 10 and the annular base 15 is supported for example sliding against this outer wall 4.
  • the inner diameter of the foot 16 is greater the outside diameter of the rim 8, to allow the introduction of the annular base 15 and the foot 16 through the annular opening 11 in the recess 10.
  • the flange 13 is retained axially on the disc 1 by a split annular retaining ring 20.
  • the retaining ring 20 has an axial front wall 21 bearing against the inner face 7 of the flange 8, a rear wall 22 disposed at a short distance from the axially inner wall 5 of the recess 10, a wall external device 23 connected to the front wall 21 by a bevel 24 and connected to the rear wall 22 by a rabbet 25 delimited by a radial surface 26 and a cylindrical surface 27, and finally an inner axial wall 28 whose diameter is greater than diameter of the radially inner wall 6 of the recess of a measure allowing the retraction of the retaining ring 20 behind the edge 8 by compression during the establishment of the flange 13.
  • the radial surface 26 delimiting the rabbet 25 is, in the mounting position shown in Figure 1, supported by the face of the foot 16 located opposite the annular opening 11.
  • the diameter of the cylindrical surface 27 delimiting the rabbet 25 is substantially equal to the inside diameter of the foot 16 in position of the retaining ring 13. But when the retaining ring 13 is subjected to centrifugal forces during the rotation of the disk 1, the cylindrical surface 27 bears positively against the end Inside 17 of the foot 16.
  • the inside diameter of the foot 16 is also substantially equal to the outside diameter of the front wall 21 of the retaining ring at the state of rest.
  • the inner end 17 of the foot 16 is also connected to the rear face 18 of the foot 16, located opposite the wall axially interior 5 of the recess 10, by a chamfer 19.
  • This chamfer 19 and the chamfer 24 of the retaining ring 20 have angles identical to the axis of rotation 2 of the disc 1, which are between 10 ° and 45 °.
  • the inner axial wall 28 of the retaining ring 20 is in further connected to the rear wall 22 by a second chamfer 29 which allows the extension of the retaining ring 20 during its introduction in the recess 10.
  • Figures 2a to 2f show the different phases of assembly of the flange 13 on the disc 1.
  • the split ring retaining ring 20 is introduced into the recess 10 where it moves into position rest as shown in Figure 2a.
  • the flange 13 is then placed in such a way that the end 17 of the foot 16 is in the opening 11 of the recess 10.
  • chamfer 19 of the foot 16 then bears against the chamfer 24 of the retaining ring 20, which allows to center the retaining ring 20 with respect to the axis of rotation 2 of the disc 1.
  • axial force F on the inner portion 14 of the flange 13. This operation causes a compression of the retaining ring 20, as this is shown in Figures 2b, 2c and 2d, and a sliding of the base ring 15 on the radially outer wall 4 of the recess 10.
  • the flange 13 is mounted with a prestressing axial on the disk 1.
  • the axial displacement of the flask 13 during its editing on the disc 1 drives the compression of the retaining ring 20 thanks to the chamfers 19 and 24.
  • the foot 16 is provided with a plurality of notches 40 whose bottom is distant from the axis 2 of a distance greater than the diameter of the outer peripheral wall 23 of the retaining ring 20. It can thus slip through the gap end of a suitable tool 41, as shown on the FIG. 3, in order to compress the retaining ring 20.
  • the retaining ring 20 comprises in the rebate 25 and in correspondence with the protuberances 40, protrusions 42 which fit into the notches 40 and whose outer surfaces are flush with the outer peripheral wall 23 of the retaining ring 20.
  • These excrescences 42 allow a better tools 41, and they also make it possible to immobilize rotation of the retaining ring 20 relative to the flange 13.
  • the portion 12 of the flange 13 is in this case immobilized relative to the disc 1 by appropriate means, such as studs 43 which fit between two feet of blades.
  • notches 40, excrescences 42 and pads 43 makes it possible to secure in rotation the disk 1, the flange 13 and the retaining ring 20, without there being any immobilizer in direct rotation between the retaining ring 20 and the disk 1.
  • This provision avoids introducing a coefficient of stress concentration due to slits made in the rim 8 of disk 1 which is a piece with a short life. We thus preserve the mechanical integrity of the disc 1 and increases its life.

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)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
EP01402146A 2000-08-10 2001-08-09 Dispositif de rétention d'une flasque annulaire contre une face radiale d'un disque à aubes Expired - Lifetime EP1180580B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0010503A FR2812906B1 (fr) 2000-08-10 2000-08-10 Bague de retention axiale d'un flasque sur un disque
FR0010503 2000-08-10

Publications (2)

Publication Number Publication Date
EP1180580A1 EP1180580A1 (fr) 2002-02-20
EP1180580B1 true EP1180580B1 (fr) 2005-06-22

Family

ID=8853448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01402146A Expired - Lifetime EP1180580B1 (fr) 2000-08-10 2001-08-09 Dispositif de rétention d'une flasque annulaire contre une face radiale d'un disque à aubes

Country Status (6)

Country Link
US (1) US6520743B2 (ja)
EP (1) EP1180580B1 (ja)
JP (1) JP4043737B2 (ja)
CA (1) CA2354121C (ja)
DE (1) DE60111599T2 (ja)
FR (1) FR2812906B1 (ja)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6896776B2 (en) * 2000-12-18 2005-05-24 Applied Materials Inc. Method and apparatus for electro-chemical processing
US20030068375A1 (en) * 2001-08-06 2003-04-10 Curtis Wright Pharmaceutical formulation containing gelling agent
WO2005003326A2 (en) * 2003-03-28 2005-01-13 Receptors Llc. Artificial receptors including reversibly immobilized building blocks and methods
US6884028B2 (en) * 2002-09-30 2005-04-26 General Electric Company Turbomachinery blade retention system
FR2850130B1 (fr) * 2003-01-16 2006-01-20 Snecma Moteurs Dispositif pour retenir un flasque annulaire contre une face radiale d'un disque
FR2856105B1 (fr) 2003-06-16 2007-05-25 Snecma Moteurs Amelioration de la capacite de retention d'une aube a attache marteau dissymetrique a l'aide des raidisseurs de plates-formes
FR2857691B1 (fr) * 2003-07-17 2006-02-03 Snecma Moteurs Retention de flasque de rotor
US8075872B2 (en) * 2003-08-06 2011-12-13 Gruenenthal Gmbh Abuse-proofed dosage form
DE10336400A1 (de) 2003-08-06 2005-03-24 Grünenthal GmbH Gegen Missbrauch gesicherte Darreichungsform
DE102004032051A1 (de) 2004-07-01 2006-01-19 Grünenthal GmbH Verfahren zur Herstellung einer gegen Missbrauch gesicherten, festen Darreichungsform
GB2405183A (en) * 2003-08-21 2005-02-23 Rolls Royce Plc Ring and channel arrangement for joining components
FR2868808B1 (fr) * 2004-04-09 2008-08-29 Snecma Moteurs Sa Dispositif de retenue axiale d'aubes sur un disque de rotor d'une turbomachine
US7238008B2 (en) * 2004-05-28 2007-07-03 General Electric Company Turbine blade retainer seal
US7597542B2 (en) * 2005-08-30 2009-10-06 General Electric Company Methods and apparatus for controlling contact within stator assemblies
GB0524929D0 (en) * 2005-12-06 2006-01-18 Rolls Royce Plc Retention arrangement
DE102007011485A1 (de) 2007-03-07 2008-09-11 Grünenthal GmbH Darreichungsform mit erschwertem Missbrauch
FR2918106B1 (fr) 2007-06-27 2011-05-06 Snecma Dispositif de retenue axiale d'aubes montees sur un disque de rotor de turbomachine.
US8206119B2 (en) * 2009-02-05 2012-06-26 General Electric Company Turbine coverplate systems
US8162615B2 (en) * 2009-03-17 2012-04-24 United Technologies Corporation Split disk assembly for a gas turbine engine
US20100254807A1 (en) * 2009-04-07 2010-10-07 Honeywell International Inc. Turbine rotor seal plate with integral flow discourager
US8469670B2 (en) * 2009-08-27 2013-06-25 Rolls-Royce Corporation Fan assembly
DE102010015404B4 (de) * 2010-04-19 2012-02-16 Mtu Aero Engines Gmbh Verfahren zur Reparatur einer Rotoranordnung einer Turbomaschine, Ringelement für eine Rotoranordnung einer Turbomaschine sowie Rotoranordnung für eine Turbomaschine
US8608436B2 (en) * 2010-08-31 2013-12-17 General Electric Company Tapered collet connection of rotor components
EP2514923A1 (de) * 2011-04-18 2012-10-24 MTU Aero Engines GmbH Blendeneinrichtung, integral beschaufelter Rotorgrundkörper, Verfahren und Strömungsmaschine
FR2982635B1 (fr) * 2011-11-15 2013-11-15 Snecma Roue a aubes pour une turbomachine
US8979502B2 (en) 2011-12-15 2015-03-17 Pratt & Whitney Canada Corp. Turbine rotor retaining system
US9297263B2 (en) * 2012-10-31 2016-03-29 Solar Turbines Incorporated Turbine blade for a gas turbine engine
US9228443B2 (en) * 2012-10-31 2016-01-05 Solar Turbines Incorporated Turbine rotor assembly
CA2894273A1 (en) 2012-12-13 2014-06-19 Mack Trucks, Inc. Retaining ring retention system and method
RU2517462C1 (ru) * 2013-03-01 2014-05-27 Открытое акционерное общество "Авиадвигатель" Ротор турбины
US9803485B2 (en) 2013-03-05 2017-10-31 Rolls-Royce North American Technologies, Inc. Turbine segmented cover plate retention method
US9453422B2 (en) * 2013-03-08 2016-09-27 General Electric Company Device, system and method for preventing leakage in a turbine
US10100652B2 (en) * 2013-04-12 2018-10-16 United Technologies Corporation Cover plate for a rotor assembly of a gas turbine engine
FR3029961B1 (fr) * 2014-12-11 2021-06-11 Snecma Roue a aubes avec becquets pour une turbine de turbomachine
EP3073052B1 (en) * 2015-02-17 2018-01-24 Rolls-Royce Corporation Fan assembly
US10539029B2 (en) * 2016-03-15 2020-01-21 United Technologies Corporation Dual snapped cover plate with retention ring attachment
DE102016107315A1 (de) * 2016-04-20 2017-10-26 Rolls-Royce Deutschland Ltd & Co Kg Rotor mit Überhang an Laufschaufeln für ein Sicherungselement
US10215037B2 (en) * 2016-05-13 2019-02-26 United Technologies Corporation Contoured retaining ring
US10392966B2 (en) * 2016-09-23 2019-08-27 United Technologies Corporation Retaining ring end gap features
US10787921B2 (en) * 2018-09-13 2020-09-29 Raytheon Technologies Corporation High pressure turbine rear side plate
US10975707B2 (en) * 2018-12-19 2021-04-13 Pratt & Whitney Canada Corp. Turbomachine disc cover mounting arrangement
US10876429B2 (en) 2019-03-21 2020-12-29 Pratt & Whitney Canada Corp. Shroud segment assembly intersegment end gaps control

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE792286A (fr) * 1971-12-06 1973-03-30 Gen Electric Dispositif de retenue d'aubes sans boulon pour un rotor de turbomachin
US4192633A (en) * 1977-12-28 1980-03-11 General Electric Company Counterweighted blade damper
US4304523A (en) * 1980-06-23 1981-12-08 General Electric Company Means and method for securing a member to a structure
US4890981A (en) * 1988-12-30 1990-01-02 General Electric Company Boltless rotor blade retainer
US5018943A (en) * 1989-04-17 1991-05-28 General Electric Company Boltless balance weight for turbine rotors
US5525429A (en) * 1995-03-06 1996-06-11 General Electric Company Laser shock peening surface enhancement for gas turbine engine high strength rotor alloy repair

Also Published As

Publication number Publication date
CA2354121A1 (fr) 2002-02-10
FR2812906B1 (fr) 2002-09-20
DE60111599D1 (de) 2005-07-28
US6520743B2 (en) 2003-02-18
JP2002122003A (ja) 2002-04-26
FR2812906A1 (fr) 2002-02-15
EP1180580A1 (fr) 2002-02-20
CA2354121C (fr) 2007-09-25
JP4043737B2 (ja) 2008-02-06
US20020018719A1 (en) 2002-02-14
DE60111599T2 (de) 2006-05-18

Similar Documents

Publication Publication Date Title
EP1180580B1 (fr) Dispositif de rétention d'une flasque annulaire contre une face radiale d'un disque à aubes
EP1439282B1 (fr) Dispositif pour retenir un flasque annulaire contre une face radiale d'un disque
EP1498579B1 (fr) Disque de rotor portant un flasque annulaire
EP2488725B1 (fr) Roue de turbine equipee d'un jonc de retenue axiale verrouillant des pales par rapport a un disque
EP1584794B1 (fr) Disque de rotor d'une turbomachine avec un dispositif de retenue axiale d'aubes
EP1314856B1 (fr) Dispositif de blocage des aubes dans une rainure d'un disque
EP1760258B1 (fr) Dispositif d`immobilisation d`un anneau de rétention axiale d`une aube
EP1760259B1 (fr) Dispositif d'immobilisation d'un anneau de rétention axiale d'une aube
EP1895103B1 (fr) Aube de rotor d'une turbomachine
EP1225322B1 (fr) Dispositif de centrage d'un tube dans un arbre de turbine
WO2010067024A2 (fr) Roue de turbine equipee d'un dispositif de retenue axiale verrouillant des pales par rapport a un disque
EP1845235B1 (fr) Dispositif de rétention axiale d'un flasque de disque de rotor de turbomachine
FR2918409A1 (fr) Partie tournante de turbomachine comprenant des secteurs inter-aubes formant plateforme rapportes fixement sur un disque
CA2514068C (fr) Disque de rotor de turbomachine
CA2472301C (fr) Dispositif de fixation par vis et ecrous
FR3018773A1 (fr) Dispositif de support
FR2678063A1 (fr) Dispositif de fixation d'un capteur dans l'alesage d'un support.
EP1649472B1 (fr) Electrovalve, procede d'assemblage d'un solenoïde sur ladite electrovalve, et procede de desassemblage du solenoïde de ladite electrovalve
EP0881418B1 (fr) Thermostat à boîtier en matériau synthétique assemblé avec joint en L
FR3121706A1 (fr) Clinquant a languettes pour pied d’aube de rotor de turbomachine
FR2903138A1 (fr) Aube mobile et disque de rotor de turbomachine, et dispositif d'attache d'une telle aube sur un tel disque

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: 20010818

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

AKX Designation fees paid

Free format text: DE FR GB

17Q First examination report despatched

Effective date: 20040519

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

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

Effective date: 20050622

REF Corresponds to:

Ref document number: 60111599

Country of ref document: DE

Date of ref document: 20050728

Kind code of ref document: P

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: SNECMA

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

Effective date: 20060323

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

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

Ref country code: DE

Payment date: 20130722

Year of fee payment: 13

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

Ref country code: GB

Payment date: 20130725

Year of fee payment: 13

Ref country code: FR

Payment date: 20130718

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60111599

Country of ref document: DE

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

Effective date: 20140809

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60111599

Country of ref document: DE

Effective date: 20150303

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150430

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: 20150303

Ref country code: GB

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

Effective date: 20140809

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: 20140901