EP1180580A1 - 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
- EP1180580A1 EP1180580A1 EP01402146A EP01402146A EP1180580A1 EP 1180580 A1 EP1180580 A1 EP 1180580A1 EP 01402146 A EP01402146 A EP 01402146A EP 01402146 A EP01402146 A EP 01402146A EP 1180580 A1 EP1180580 A1 EP 1180580A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flange
- recess
- disc
- foot
- face
- 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
Links
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 230000000284 resting effect Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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 annular against a radial face of a disc.
- a device for retaining a annular flange against a radial face of a disc this disc having in said radial face a delimited annular recess by several walls, one of which is formed by a face of a rim which extends radially outwards, and the flange having, in its radially inner part, an annular base in support for example sliding against the radially outer wall of the recess and a leg which extends radially inward into the recess from from the inner end of the base, said device comprising a ring split ring retainer disposed in the recess and having a face in abutment against the face of the rim, this ring having on its radially outer face a rebate to receive a portion of the foot in order 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 displacement axial type of blades with fir attachment 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 retaining ring to allow the fitting of the flange.
- the object of the invention is to propose a retention device axial of the flange which allows a simplified mounting of the flange.
- Another object of the invention is to allow mounting of the flange on the disc without special tools to compress the ring which reduces the costs of the necessary materials for maintenance.
- Another object of the invention is to propose a device for axial retention of the flange which increases the service life of the disc.
- the invention achieves its object by the fact that the foot of the flange and the retaining ring have annular chamfers facing each other intended to allow the radial compression of the ring beforehand arranged in the recess during the axial sliding of the base in the recess when mounting the flange on the disc.
- a disc of rotor of a gas turbine engine having an axis of rotation 2.
- This disc 1 has, in its radial face 3, a delimited recess 10 by a radially outer wall 4, an axially wall inner 5, a radially inner wall 6, and the inner face 7 an annular rim 8 which extends radially outwards from of the radially inner wall 6.
- the upper end 9 of the flange 8 is radially distant from the radially outer wall 4, in order to provide an annular opening 11 allowing access into the recess 10.
- the disc 1 has notches at its periphery axial intended to receive blade roots not shown on the drawings.
- blade roots are immobilized axially by the portion outer 12 of an annular flange 13 the portion of which radially interior 14 has an annular base 15 which extends axially in the outer region of the recess 10 and a foot 16 which extends radially inward of the recess 10 from the end internal of the annular base 15.
- the outside 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 for example sliding against this outer wall 4.
- the inner diameter of the foot 16 is greater to the outer diameter of the rim 8, in order 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 internal face 7 rim 8, a rear wall 22 disposed 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 chamfer 24 and connected to the rear wall 22 by a rebate 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 retraction of the retaining ring 20 behind the rim 8 by compression when the flange 13 is put in place.
- the radial surface 26 delimiting the rebate 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 rebate 25 is substantially equal to the inside diameter of the leg 16 in position of the retaining ring 13. But when the retaining ring 13 is subjected to centrifugal forces during the rotation of the disc 1, the cylindrical surface 27 is in positive support against the end interior 17 of foot 16.
- the internal diameter of the foot 16 is also substantially equal the outside diameter of the front wall 21 of the retaining ring at the state of rest.
- the inner end 17 of the leg 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 identical angles 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 recess 10.
- Figures 2a to 2f show the different assembly phases of the flange 13 on the disc 1.
- the split annular retaining ring 20 is introduced into the recess 10 where it moves to the position of rest as shown in Figure 2a.
- flange 13 is mounted with a prestress axial on disc 1.
- the axial displacement of the flange 13 during its mounting on the disc 1 causes the compression of the retaining ring 20 thanks to the chamfers 19 and 24.
- the stand 16 is provided with a plurality of notches 40 whose bottom is distant from axis 2 of a distance greater than the diameter of the outer peripheral wall 23 of the retaining ring 20. It is thus possible to slide through the gap the end of a suitable tool 41, as shown on the Figure 3, in order to compress the retaining ring 20.
- the retaining ring 20 comprises in the rebate 25 and in correspondence with protrusions 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.
- protuberances 42 allow better support of tools 41, and they also make it possible to immobilize in rotation of the retaining ring 20 relative to the flange 13.
- the portion outer 12 of the flange 13 is in this case immobilized relative to the disc 1 by suitable means, such as studs 43 which fit between two blade roots.
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)
Abstract
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)
- Dispositif pour retenir un flasque annulaire (13) contre une face radiale (3) d'un disque (1), 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), ledit dispositif comportant une bague de retenue (20) annulaire fendue 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).
- Dispositif 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°.
- Dispositif 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).
- Dispositif selon la revendication 3, caractérisé par le fait que la portion du pied (16) reçue dans la feuillure (25) comporte des encoches (40).
- Dispositif 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).
- Dispositif 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 |
|---|---|---|---|
| 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 true EP1180580A1 (fr) | 2002-02-20 |
| EP1180580B1 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) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2009244A1 (fr) | 2007-06-27 | 2008-12-31 | Snecma | Dispositif de retenue axiale d'aubes montées sur un disque de rotor de turbomachine |
| 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 |
| EP1795709A3 (fr) * | 2005-12-06 | 2012-11-28 | Rolls-Royce plc | Anneau de retenue pour turbine à gaz |
| EP3219912B1 (fr) * | 2016-03-15 | 2021-07-14 | Raytheon Technologies Corporation | Plaque de recouvrement, ensemble de rotor, et turbine à gaz |
Families Citing this family (41)
| 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 |
| UA57357C2 (en) * | 2002-09-05 | 2005-02-15 | State Entpr Zaporizhzhya Akade | Working wheel of axial turbo-machine |
| 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 |
| EP1613737A4 (fr) * | 2003-03-28 | 2008-12-03 | Receptors Llc | Recepteurs artificiels comprenant des blocs de construction immobilises de maniere reversible et procedes |
| 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 |
| FR2899636B1 (fr) * | 2006-04-10 | 2008-07-04 | Snecma Sa | Dispositif de retention axiale d'un flasque de disque de rotor de turbomachine |
| DE102007011485A1 (de) | 2007-03-07 | 2008-09-11 | Grünenthal GmbH | Darreichungsform mit erschwertem Missbrauch |
| 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 |
| 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 |
| CN104981616B (zh) | 2012-12-13 | 2017-09-26 | 马克卡车公司 | 保持环固持系统和方法 |
| 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 (fr) * | 2015-02-17 | 2018-01-24 | Rolls-Royce Corporation | Ensemble de soufflant |
| 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 |
| KR102887773B1 (ko) * | 2023-04-04 | 2025-11-17 | 두산에너빌리티 주식회사 | 터빈 블레이드의 씰 조립구조와 이를 포함하는 가스 터빈 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (4)
| 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 |
| 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 DE DE60111599T patent/DE60111599T2/de not_active Expired - Lifetime
- 2001-08-09 JP JP2001242317A patent/JP4043737B2/ja not_active Expired - Fee Related
- 2001-08-09 EP EP01402146A patent/EP1180580B1/fr not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1795709A3 (fr) * | 2005-12-06 | 2012-11-28 | Rolls-Royce plc | Anneau de retenue pour turbine à gaz |
| EP2009244A1 (fr) | 2007-06-27 | 2008-12-31 | Snecma | Dispositif de retenue axiale d'aubes montées sur un disque de rotor de turbomachine |
| FR2918106A1 (fr) * | 2007-06-27 | 2009-01-02 | Snecma Sa | Dispositif de retenue axiale d'aubes montees sur un disque de rotor de turbomachine. |
| US8348620B2 (en) | 2007-06-27 | 2013-01-08 | Snecma | Device for axially retaining blades mounted on a turbomachine rotor disk |
| 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 |
| EP3219912B1 (fr) * | 2016-03-15 | 2021-07-14 | Raytheon Technologies Corporation | Plaque de recouvrement, ensemble de rotor, et turbine à gaz |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002122003A (ja) | 2002-04-26 |
| DE60111599T2 (de) | 2006-05-18 |
| FR2812906B1 (fr) | 2002-09-20 |
| JP4043737B2 (ja) | 2008-02-06 |
| FR2812906A1 (fr) | 2002-02-15 |
| CA2354121C (fr) | 2007-09-25 |
| DE60111599D1 (de) | 2005-07-28 |
| US6520743B2 (en) | 2003-02-18 |
| US20020018719A1 (en) | 2002-02-14 |
| EP1180580B1 (fr) | 2005-06-22 |
| CA2354121A1 (fr) | 2002-02-10 |
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