EP0735242B1 - Agencement de raccordement de deux secteurs angulaires de turbomachine et joint conçu pour servir dans cet agencement - Google Patents
Agencement de raccordement de deux secteurs angulaires de turbomachine et joint conçu pour servir dans cet agencement Download PDFInfo
- Publication number
- EP0735242B1 EP0735242B1 EP96400661A EP96400661A EP0735242B1 EP 0735242 B1 EP0735242 B1 EP 0735242B1 EP 96400661 A EP96400661 A EP 96400661A EP 96400661 A EP96400661 A EP 96400661A EP 0735242 B1 EP0735242 B1 EP 0735242B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- platforms
- layer
- trenches
- gap
- cavities
- 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
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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
Definitions
- the invention relates to an arrangement of connection of two adjoining platforms of turbomachine, as well as a seal designed to be used in this arrangement.
- turbomachinery where certain elements such as stator distributors are composed of an assembly of parts themselves composed of a sector platform cylinder or cone with vanes. Platforms are joined together to form a surface also continuous as possible, and they are sometimes provided with their surface opposite to that from which the blades rise of a layer of easy erosion material, often called “abradable” in this technique and whose role is sealing under the platforms by wearing out locally against rigid facing pieces called wipers and which belong to the rotor. The wear of the layer makes it fit the shape of these pieces by not tolerating that a very small game that does not let pass almost no leaks.
- abradable a layer of easy erosion material
- the slats are therefore used to ensure the desired seal in the axial direction.
- the cavities advantageously take the appearance of grooves which properly retain the slats.
- the cavities form on the platforms of the trenches open to the game and the diaper and having faces front stop of the edges of the platforms coinciding with of the ends of the set, and we add a joint provided with a core occupying the trenches, the slats being joined to blade. We then have a single joint through which the mounting is easy.
- Another object of the invention is the seal previously defined and designed primarily for this application.
- the core 11 is engaged in trenches 13 and 14 axles established on each of platforms 1 and 2, and which open towards each other and towards surfaces platforms 1 and 2 which are opposite the surfaces 7 and 8 and covered by a layer of material of easy abrasion, respectively 15 or 16 and which can consist of a layer of honeycomb.
- Each of layer parts 15 and 16 extends above the trench 13 or 14 respectively so as to cover it and leave only game 3 between them. circumstance that the slats 12, which already divide the volume of trenches 13 and 14 in sections, must be more extensive and intimately intertwined with parts of layer 15 and 16 to also obstruct this part of the game 3.
- An installation can be carried out in practice in making cuts in the layer 15 parts and 16 at the place of the slats 12 and by accommodating the slats 12 in these notches when the diaper parts are laid and fixed to platforms 1 and 2 properly say.
- the core 11 is advantageously backed against the surfaces of the trenches 13 and 14 with little or no play. It can be ending with curved edges 17 and 18 at the front and at the rear, substantially parallel to the strips 12 and which lean almost without play against stop faces 19 and 20 from trenches 13 and 14 in the axial direction, which are close to the edges of platforms 1 and 2. If the platforms 1 and 2 move mutually in axial direction, they shear the core 11 which has however the ability to resist and thwart these unwanted movements that would disjoin the platforms 1 and 2.
- the curved edges of the core 11, both at ends than on the sides, also have the purpose of support on the support plate 25 of parts 15 and 16 of the easy erosion layer and prevent it from descend into trenches 13 and 14.
- the lamellae 12 extend in front of grooves 21 separating ridges or wipers 22 of the rotor rubbing on the parts of layers 15 and 16 and which shape them to complete the seal between a rotor disc 23 carrying these wipers 22 and platforms 1 and 2.
- the seal 10 is omitted and the device sealing only includes the lamellae, here designated by the reference 28 and which occupy grooves 29 dug in platforms 1 and 2. These grooves 29 open on the edge face towards the other platform, and extend in a generally radial direction across the thickness of the platforms and parts of the layer abradable 15 and 16, and up to the face of this layer opposite platforms 1 and 2 on the one hand, up to the the axial groove 5 of the tongue 4 on the other hand.
- the lamellae 28 could therefore slide grooves 29, and drop to disk 23, if these were not variable curvature, and here more precisely provided with a corrugation 30 or an oblique part, separating two straight portions 31 and 32.
- the lamellae 28 are curved at the same shape and thus retained in their place.
- the platforms 1 and 2 are held by the vanes 9, themselves linked by their opposite end (invisible in the figures) to external platforms attached to a stator shell and which can also be formed from sectors juxtaposed. Sealing devices like tabs and coverslips can be used to obstruct the games between these other sectors.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
- la figure 1 est une vue d'ensemble de l'agencement,
- les figures 2 et 3 sont deux coupes perpendiculaires de cette réalisation,
- et la figure 4 illustre un autre mode de réalisation.
Claims (6)
- Agencement de raccordement de deux plates-formes (1, 2) accolées avec un jeu linéaire mitoyen (3) et recouvertes d'une couche (15, 16) de matière d'érosion facile sur des faces orientées radialement, caractérisé par des cavités s'étendant radialement sur les plates-formes et à travers la couche, et s'ouvrant sur le jeu, et par des lamelles (12, 28) occupant les cavités (13, 14, 29) et obstruant le jeu, les cavités formant des rainures s'allongeant avec des variations de courbure (30 à 32) et débouchant sur une face de la couche opposée aux plates-formes.
- Agencement selon la revendication 1, caractérisé en ce que les cavités (29) débouchent, à l'opposé de la couche, sur une rainure de la plate-forme s'ouvrant sur le jeu et s'étendant parallèlement à la couche.
- Agencement selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que les cavités forment sur les plates-formes (1, 2) des tranchées (13, 14) ouvertes sur le jeu (3) et sur la couche (15, 16) et ayant des faces d'arrêt (19, 20) avant des bords des plates-formes coïncidant avec des extrémités du jeu, et en ce qu'il comprend en outre un joint (10) pourvu d'une âme (11) occupant les tranchées, les lamelles (12) étant jointes à l'âme.
- Agencement selon la revendication 3, caractérisé en ce que l'âme (11) a une section en U adossée dans les tranchées (13, 14) et recouvrant le jeu, et des bouts (17, 18) recourbés parallèlement aux lamelles et adossés aux faces d'arrêt (19, 20) des tranchées.
- Agencement selon l'une quelconque des revendications 3 ou 4, caractérisé en ce que l'âme comprend des parties (17, 18) appuyées sur des portions de la couche qui recouvrent les tranchées (13, 14).
- Joint susceptible de servir dans un agencement de raccordement de deux plates-formes accolées de turbomachine, caractérisé en ce qu'il est conforme à l'une quelconque des revendications 3 à 5.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9503666 | 1995-03-29 | ||
FR9503666A FR2732416B1 (fr) | 1995-03-29 | 1995-03-29 | Agencement de raccordement de deux secteurs angulaires de turbomachine et joint concu pour servir dans cet agencement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0735242A1 EP0735242A1 (fr) | 1996-10-02 |
EP0735242B1 true EP0735242B1 (fr) | 1998-03-11 |
Family
ID=9477529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96400661A Expired - Lifetime EP0735242B1 (fr) | 1995-03-29 | 1996-03-28 | Agencement de raccordement de deux secteurs angulaires de turbomachine et joint conçu pour servir dans cet agencement |
Country Status (4)
Country | Link |
---|---|
US (1) | US5707207A (fr) |
EP (1) | EP0735242B1 (fr) |
DE (1) | DE69600179T2 (fr) |
FR (1) | FR2732416B1 (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6042334A (en) * | 1998-08-17 | 2000-03-28 | General Electric Company | Compressor interstage seal |
US6425736B1 (en) * | 1999-08-09 | 2002-07-30 | United Technologies Corporation | Stator assembly for a rotary machine and method for making the stator assembly |
DE10047307A1 (de) * | 2000-09-25 | 2002-08-01 | Alstom Switzerland Ltd | Dichtungsanordnung |
US20040239040A1 (en) * | 2003-05-29 | 2004-12-02 | Burdgick Steven Sebastian | Nozzle interstage seal for steam turbines |
US7438524B2 (en) * | 2005-07-20 | 2008-10-21 | United Technologies Corporation | Winged structural joint and articles employing the joint |
DE102009016803A1 (de) * | 2009-04-09 | 2010-10-14 | Rolls-Royce Deutschland Ltd & Co Kg | Labyrinth-Anstreifdichtung für eine Strömungsmaschine |
JP2012102831A (ja) * | 2010-11-12 | 2012-05-31 | Hitachi Ltd | ラビリンスシール装置、およびそれを用いたターボ機械 |
GB2489693B (en) * | 2011-04-04 | 2014-10-01 | Rolls Royce Plc | Abradable liner |
EP2899405B1 (fr) * | 2012-11-13 | 2017-07-12 | Mitsubishi Heavy Industries Compressor Corporation | Machine rotative |
EP3044424B1 (fr) * | 2013-09-10 | 2020-05-27 | United Technologies Corporation | Joint d'obturation étanche destiné à un moteur à turbine à gaz |
DE102013224199A1 (de) * | 2013-11-27 | 2015-05-28 | MTU Aero Engines AG | Gasturbinen-Laufschaufel |
US10907491B2 (en) * | 2017-11-30 | 2021-02-02 | General Electric Company | Sealing system for a rotary machine and method of assembling same |
FR3081500B1 (fr) | 2018-05-23 | 2020-05-22 | Safran Aircraft Engines | Secteur angulaire d'aubage de turbomachine a etancheite perfectionnee |
FR3085708B1 (fr) * | 2018-09-12 | 2020-11-27 | Safran Helicopter Engines | Dispositif d'etancheite ameliore pour ensemble rotatif de turbomachine |
CN111120011B (zh) * | 2018-10-30 | 2024-06-21 | 中国联合重型燃气轮机技术有限公司 | 静叶环 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3126149A (en) * | 1964-03-24 | Foamed aluminum honeycomb motor | ||
US3092393A (en) * | 1958-01-20 | 1963-06-04 | Rolls Royce | Labyrinth seals |
US3701536A (en) * | 1970-05-19 | 1972-10-31 | Garrett Corp | Labyrinth seal |
US4537024A (en) * | 1979-04-23 | 1985-08-27 | Solar Turbines, Incorporated | Turbine engines |
DE2931766C2 (de) * | 1979-08-04 | 1982-08-05 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Dichtungseinrichtung für die freien Schaufelenden eines Verstell-Leitapparates einer Gasturbine |
US4473337A (en) * | 1982-03-12 | 1984-09-25 | United Technologies Corporation | Blade damper seal |
GB2127104A (en) * | 1982-08-11 | 1984-04-04 | Rolls Royce | Sealing means for a turbine rotor blade in a gas turbine engine |
US4524980A (en) * | 1983-12-05 | 1985-06-25 | United Technologies Corporation | Intersecting feather seals for interlocking gas turbine vanes |
GB2224082A (en) * | 1988-10-19 | 1990-04-25 | Rolls Royce Plc | Turbine disc having cooling and sealing arrangements |
US5141395A (en) * | 1991-09-05 | 1992-08-25 | General Electric Company | Flow activated flowpath liner seal |
US5188507A (en) * | 1991-11-27 | 1993-02-23 | General Electric Company | Low-pressure turbine shroud |
US5249920A (en) * | 1992-07-09 | 1993-10-05 | General Electric Company | Turbine nozzle seal arrangement |
US5388959A (en) * | 1993-08-23 | 1995-02-14 | General Electric Company | Seal including a non-metallic abradable material |
-
1995
- 1995-03-29 FR FR9503666A patent/FR2732416B1/fr not_active Expired - Fee Related
-
1996
- 1996-03-20 US US08/618,720 patent/US5707207A/en not_active Expired - Fee Related
- 1996-03-28 DE DE69600179T patent/DE69600179T2/de not_active Expired - Fee Related
- 1996-03-28 EP EP96400661A patent/EP0735242B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69600179T2 (de) | 1998-07-30 |
FR2732416B1 (fr) | 1997-04-30 |
DE69600179D1 (de) | 1998-04-16 |
EP0735242A1 (fr) | 1996-10-02 |
US5707207A (en) | 1998-01-13 |
FR2732416A1 (fr) | 1996-10-04 |
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