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 PDFInfo
- 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
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)
Description
- Les chanfreins sont inclinés par rapport à l'axe du disque d'un angle compris entre 10° et 60°.
- La feuillure est délimitée par une surface en appui radial sur l'extrémité du pied et une surface radiale en appui sur la face du pied en regard de l'ouverture de l'évidement, ladite surface radiale étant raccordée au chanfrein de la bague de retenue.
- La portion du pied reçue dans la feuillure comporte des encoches.
- La feuillure comporte des excroissances qui s'insèrent dans les encoches du pied.
- La profondeur des encoches est supérieure à la hauteur des excroissances.
Claims (6)
- Assemblage pour retenir un flasque annulaire (13) contre une face radiale (3) d'un disque (1), ledit assemblage comportant un disque (1), un flasque annulaire(13) et une bague (20), ce disque (1) présentant dans ladite face radiale (3) un évidement annulaire (10) délimité par plusieurs parois dont l'une est formée par une face (7) d'un rebord (8) qui s'étend radialement vers l'extérieur, et le flasque (13) présentant, dans sa partie radialement intérieure (14), une base annulaire (15) en appui contre la paroi radialement extérieure (4) de l'évidement (10) et un pied (16) qui s'étend radialement vers l'intérieur dans l'évidement (10) à partir de l'extrémité interne de la base (15), ladite bague de retenue (20) annulaire fendue étant disposée dans l'évidement (10) et ayant une face (21) en butée contre la face (7) du rebord (8), cette bague (20) présentant sur sa face radialement extérieure une feuillure (25) pour recevoir une portion du pied (16) afin de retenir le flasque (13) contre la face radiale (3) du disque (1), caractérisé par le fait que le pied (16) du flasque (13) et la bague de retenue (20) comportent des chanfreins annulaires (19, 24) en vis-à-vis destinés à permettre la compression radiale de la bague (20) préalablement disposée dans l'évidement (10) au cours du coulissement axial de la base (15) dans l'évidement (10) lors du montage du flasque (13) sur le disque (1).
- Assemblage selon la revendication 1, caractérisé par le fait que les chanfreins (19, 24) sont inclinés par rapport à l'axe (2) du disque (1) d'un angle compris entre 10° et 60°.
- Assemblage selon l'une des revendications 1 ou 2, caractérisé par le fait que la feuillure (25) est délimitée par une surface (27) en appui radial sur l'extrémité (17) du pied (16) et une surface radiale (26) en appui sur la face du pied (16) en regard de l'ouverture (11) de l'évidement (10), ladite surface radiale (26) étant raccordée au chanfrein (24) de la bague de retenue (20).
- Assemblage selon la revendication 3, caractérisé par le fait que la portion du pied (16) reçue dans la feuillure (25) comporte des encoches (40).
- Assemblage selon la revendication 4, caractérisé par le fait que la feuillure (25) comporte des excroissances (42) qui s'insèrent dans les encoches (40) du pied (16).
- Assemblage selon la revendication 5, caractérisé par le fait que les encoches (40) ont une profondeur supérieure à la hauteur des excroissances (42).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0010503 | 2000-08-10 | ||
FR0010503A FR2812906B1 (fr) | 2000-08-10 | 2000-08-10 | Bague de retention axiale d'un flasque sur un disque |
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 (fr) |
EP (1) | EP1180580B1 (fr) |
JP (1) | JP4043737B2 (fr) |
CA (1) | CA2354121C (fr) |
DE (1) | DE60111599T2 (fr) |
FR (1) | FR2812906B1 (fr) |
Families Citing this family (42)
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 (fr) * | 2003-03-28 | 2005-01-13 | Receptors Llc. | Recepteurs artificiels comprenant des blocs de construction immobilises de maniere reversible et procedes |
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 |
DE102004032051A1 (de) | 2004-07-01 | 2006-01-19 | Grünenthal GmbH | Verfahren zur Herstellung einer gegen Missbrauch gesicherten, festen Darreichungsform |
DE10336400A1 (de) | 2003-08-06 | 2005-03-24 | Grünenthal GmbH | Gegen Missbrauch gesicherte Darreichungsform |
US8075872B2 (en) * | 2003-08-06 | 2011-12-13 | Gruenenthal Gmbh | Abuse-proofed dosage form |
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 (fr) * | 2011-04-18 | 2012-10-24 | MTU Aero Engines GmbH | Dispositif de diaphragme, corps de base de rotor à aubage intégral, procédé et turbomachine |
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 |
AU2012396841B2 (en) | 2012-12-13 | 2018-01-18 | Volvo Truck Corporation | Retaining ring retention system and method |
RU2517462C1 (ru) * | 2013-03-01 | 2014-05-27 | Открытое акционерное общество "Авиадвигатель" | Ротор турбины |
WO2014137435A2 (fr) | 2013-03-05 | 2014-09-12 | Rolls-Royce North American Technologies, Inc. | Procédé de rétention de plaques de capot segmentées de turbine |
US9453422B2 (en) * | 2013-03-08 | 2016-09-27 | General Electric Company | Device, system and method for preventing leakage in a turbine |
EP2984303A4 (fr) | 2013-04-12 | 2016-12-21 | United Technologies Corp | Couvercle pour un ensemble rotor d'une turbine à gaz |
FR3029961B1 (fr) * | 2014-12-11 | 2021-06-11 | Snecma | Roue a aubes avec becquets pour une turbine de turbomachine |
EP3073052B1 (fr) * | 2015-02-17 | 2018-01-24 | Rolls-Royce Corporation | Ensemble de soufflant |
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)
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 |
-
2000
- 2000-08-10 FR FR0010503A patent/FR2812906B1/fr not_active Expired - Fee Related
-
2001
- 2001-07-19 US US09/907,679 patent/US6520743B2/en not_active Expired - Lifetime
- 2001-07-26 CA CA002354121A patent/CA2354121C/fr not_active Expired - Fee Related
- 2001-08-09 EP EP01402146A patent/EP1180580B1/fr not_active Expired - Lifetime
- 2001-08-09 DE DE60111599T patent/DE60111599T2/de not_active Expired - Lifetime
- 2001-08-09 JP JP2001242317A patent/JP4043737B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20020018719A1 (en) | 2002-02-14 |
EP1180580A1 (fr) | 2002-02-20 |
US6520743B2 (en) | 2003-02-18 |
JP4043737B2 (ja) | 2008-02-06 |
DE60111599T2 (de) | 2006-05-18 |
CA2354121A1 (fr) | 2002-02-10 |
FR2812906A1 (fr) | 2002-02-15 |
FR2812906B1 (fr) | 2002-09-20 |
JP2002122003A (ja) | 2002-04-26 |
CA2354121C (fr) | 2007-09-25 |
DE60111599D1 (de) | 2005-07-28 |
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