EP2524112B1 - Vaned disk arrangement - Google Patents
Vaned disk arrangement Download PDFInfo
- Publication number
- EP2524112B1 EP2524112B1 EP11700085.1A EP11700085A EP2524112B1 EP 2524112 B1 EP2524112 B1 EP 2524112B1 EP 11700085 A EP11700085 A EP 11700085A EP 2524112 B1 EP2524112 B1 EP 2524112B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- groove
- bulb
- parts
- faces
- disk
- 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.)
- Active
Links
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 description 3
- 239000011153 ceramic matrix composite Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 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
- 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
- F01D5/3084—Fixing blades to rotors; Blade roots ; Blade spacers the blades being made of ceramics
-
- 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
- F01D5/3092—Protective layers between blade root and rotor disc surfaces, e.g. anti-friction layers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/60—Assembly methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/70—Shape
- F05D2250/71—Shape curved
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
Definitions
- the main parts have a variable thickness, their opposite faces having inclinations equal to the face which is in front of them among the overhanging faces and the upper faces, and thus compensate for their difference in inclination, while the external parts maintain the in place resting inserts based on the peripheral face of the disk, and that the internal parts have the same effect during operation by possibly leaning against the bulb.
Description
Le sujet de l'invention est un agencement de disque aubagé, utilisable dans une turbine ou un compresseur de turbomachine par exemple.The subject of the invention is a blisk disc arrangement that can be used in a turbine or a turbomachine compressor, for example.
Il est classique que les aubes soient pourvues de bulbes engagés dans des rainures entaillant le disque, par lesquels les aubes sont retenues sur le disque malgré les forces centrifuges au fonctionnement. Les rainures peuvent être orientées dans l'axe du disque et contenir chacun un bulbe, ou circulaires et contenir tous les bulbes. Les bulbes comprennent généralement des faces supérieures obliques, qui s'appuient sur des faces en surplomb de même obliquité de la rainure quand les forces centrifuges s'exercent. Les inclinaisons par rapport à un plan médian de la rainure sont suffisantes pour qu'aucun coincement n'apparaisse entre ces faces quand les forces centrifuges ont cessé. Le document
L'invention procède d'un désir de construire certaines aubes en une matière composite comme un CMC (Composite à Matrice Céramique). On se heurte alors à la difficulté que le mode de fabrication par moulage, obligatoire pour ces matériaux, interdit les discontinuités d'orientation trop grandes et oblige donc à donner à la partie supérieure du bulbe, raccordée à la partie extérieure de l'aube de direction radiale, une inclinaison ne dépassant pas 30° environ, alors qu'une inclinaison de 40° au moins des faces en surplomb de la rainure doit être respectée pour empêcher les coincements. L'intégration directe de telles aubes dans un disque est donc exclue. L'invention comble cette lacune.The invention proceeds from a desire to construct certain blades of a composite material such as a CMC (Ceramic Matrix Composite). We then come up against the difficulty that the method of manufacturing by molding, obligatory for these materials, prohibits too large discontinuities of orientation and therefore forces to give to the upper part of the bulb, connected to the outer part of the blade of radial direction, an inclination not exceeding about 30 °, whereas an inclination of at least 40 ° of the overhanging faces of the groove must be respected for prevent jamming. The direct integration of such vanes in a disk is excluded. The invention fills this gap.
Elle concerne sous une forme générale un agencement comprenant un disque et au moins une aube dont un bulbe est logé dans une rainure du disque, la rainure comprenant deux faces en surplomb d'un fond de la rainure dotées d'une première inclinaison par rapport à un plan médian de la rainure, le bulbe comprenant deux faces supérieures situées sous les faces en surplomb mais dotées d'une seconde inclinaison par rapport audit plan médian qui est inférieure à la première inclinaison, et des inserts étant ajoutés entre le bulbe et le disque, qui comprennent des parties principales disposées entre les faces en surplomb et les faces supérieures, et des parties externes raccordées aux parties principales et s'étendant à travers une ouverture de la rainure, caractérisé en ce que les parties externes s'étendent sur une face périphérique du disque en divergeant l'une de l'autre vers des extrémités libres opposées aux parties principales, et les inserts comprennent des parties internes raccordées aux parties principales, s'étendant entre le bulbe et le fond de la rainure en convergeant l'une vers l'autre vers des extrémités libres opposées aux parties principales.It concerns in a general form an arrangement comprising a disc and at least one blade of which a bulb is housed in a groove of the disc, the groove comprising two faces overhanging a bottom of the groove having a first inclination with respect to a median plane of the groove, the bulb comprising two upper faces located under the overhanging faces but having a second inclination with respect to said median plane which is less than the first inclination, and inserts being added between the bulb and the disk , which comprise main portions disposed between the overhanging faces and the upper faces, and external portions connected to the main portions and extending through an opening of the groove, characterized in that the outer portions extend on one face disk peripheral diverging from each other towards free ends opposite to the main portions, and the inserts internal parts connected to the main parts, extending between the bulb and the bottom of the groove converging towards each other towards free ends opposite to the main parts.
Les parties principales ont une épaisseur variable, leurs faces opposées ayant des inclinaisons égales à la face qui se trouve devant elles parmi les faces en surplomb et les faces supérieures, et compensent donc leur différence d'inclinaison, alors que les parties externes assurent le maintien en place des inserts au repos en s'appuyant sur la face périphérique du disque, et que les parties internes ont le même effet pendant le fonctionnement en s'appuyant éventuellement contre le bulbe.The main parts have a variable thickness, their opposite faces having inclinations equal to the face which is in front of them among the overhanging faces and the upper faces, and thus compensate for their difference in inclination, while the external parts maintain the in place resting inserts based on the peripheral face of the disk, and that the internal parts have the same effect during operation by possibly leaning against the bulb.
Cette conception permet donc d'utiliser des aubes en matière composite dans un disque métallique, les inserts pouvant être aussi métalliques. Selon une caractéristique avantageuse, les inserts sont disjoints l'un de l'autre aux parties internes pour ne pas risquer de créer des coincements par arc-boutement des parties internes ; et selon une autre caractéristique avantageuse, dans un état de fonctionnement où le bulbe repose sur les parties centrales et les parties centrales reposent sur les faces en surplomb, des jeux existent entre les parties externes et le disque, et entre les parties internes et le bulbe. Cette caractéristique permet à l'aube puis aux inserts de s'abaisser vers le fond de la rainure quand les forces centrifuges cessent, encore afin d'éviter les coincements.This design therefore makes it possible to use blades made of composite material in a metal disc, the inserts possibly being metallic. According to an advantageous characteristic, the inserts are disjointed from each other to the internal parts so as not to risk jamming by jamming of the internal parts; and according to another advantageous characteristic, in an operating state in which the bulb rests on the central parts and the central parts rest on the overhanging faces, there are gaps between the outer parts and the disk, and between the inner parts and the bulb. . This feature allows the dawn and then the inserts to lower to the bottom of the groove when centrifugal forces cease, again to avoid jamming.
L'invention sera maintenant décrite en liaison à la figure, qui représente un agencement conforme à l'invention dans un état de fonctionnement de la machine, où les forces centrifuges s'exercent sur les différents éléments. Une rainure (1) est creusée dans un disque (2), et reçoit un bulbe (3) d'une aube (4). La rainure (1) comprend une face de fond (5) puis deux faces en surplomb (6) obliques menant à une ouverture de la rainure (1) donnant sur une face périphérique (7) du disque (2). Le bulbe (3) comprend aussi une face de fond (8) au-dessus de celle de la rainure (1) et deux faces supérieures (9) obliques, devant les faces en surplomb (6) de la rainure (1), et qui se raccordent à la partie extérieure de l'aube (4). La face de fond (8) du bulbe (3) se raccorde aux faces supérieures (9) par un arrondi (10) de grand rayon qui autorise la fabrication quand l'aube (4) est en matière composite, mais un tel arrondi n'est pas possible entre les faces supérieures (9) et la partie extérieure de l'aube (4), de sorte que l'inclinaison des faces supérieures (9) (mesurée à partir d'un plan imaginaire médian de la rainure (1) défini par une direction radiale (R) locale du disque (2) et une direction axiale (A) de la rainure (1) et du bulbe (3)) est inférieure à l'inclinaison que l'on souhaite pour des faces en surplomb (6) de la rainure (1). Des inserts (11) sont alors intercalés entre le bulbe (3) et la paroi de la rainure (1). Ils comprennent chacun une partie centrale (12), une partie externe (13) et une partie interne (14), ces deux dernières étant jointes à la partie centrale (12) par ses extrémités opposées. La partie centrale (12) de chacun des inserts (11) s'étend entre une face en surplomb (6) et une face supérieure (9) respective, et ses faces latérales opposées ont la même inclinaison que la face devant laquelle ils s'étendent, de sorte que le bulbe (3) s'appuie sur les inserts (11) par des premières portées d'appui (15) et les inserts (11) s'appuient sur les faces en surplomb (6) par des secondes portées d'appui (16). Les parties externes (13) s'incurvent vers l'extérieur de la rainure et surplombent la face périphérique (7) du disque (2) dont elles sont séparées par des jeux. Les parties internes (14) s'incurvent vers le milieu de la rainure (1) et s'étendent l'une vers l'autre à partir des parties centrales (12), sans toutefois se rejoindre. Des jeux les séparent du fond (5) de la rainure tout comme du fond (8) du bulbe (3).The invention will now be described in connection with the figure, which shows an arrangement according to the invention in an operating state of the machine, where the centrifugal forces are exerted on the various elements. A groove (1) is dug into a disk (2), and receives a bulb (3) of a blade (4). The groove (1) comprises a bottom face (5) then two oblique overhanging faces (6) leading to an opening of the groove (1) facing a peripheral face (7) of the disk (2). The bulb (3) also comprises a bottom face (8) above that of the groove (1) and two oblique upper faces (9), in front of the overhanging faces (6) of the groove (1), and which are connected to the outer part of the blade (4). The bottom face (8) of the bulb (3) is connected to the upper faces (9) by a radius (10) of large radius which allows manufacture when the blade (4) is composite material, but such a rounding is not possible between the upper faces (9) and the outer part of the blade (4), so that the inclination of the upper faces (9) (measured from a median imaginary plane of the groove (1) ) defined by a local radial direction (R) of the disc (2) and an axial direction (A) of the groove (1) and the bulb (3)) is less than the inclination that is desired for overhang (6) of the groove (1). Inserts (11) are then interposed between the bulb (3) and the wall of the groove (1). They each comprise a central portion (12), an outer portion (13) and an inner portion (14), the latter two being joined to the central portion (12) by its opposite ends. The central portion (12) of each of the inserts (11) extends between an overhanging face (6) and a respective upper face (9), and its opposite lateral faces have the same inclination as the face in front of which they extend, so that the bulb (3) rests on the inserts (11) by first bearing surfaces (15) and the inserts (11) rest on the overhanging faces (6) by second bearings support (16). The outer portions (13) curl outwardly of the groove and overhang the peripheral face (7) of the disc (2) which they are separated by games. The internal parts (14) curl towards the middle of the groove (1) and extend towards each other from the central parts (12), but without joining. Games separate them from the bottom (5) of the groove as well as the bottom (8) of the bulb (3).
Un appui satisfaisant de l'aube (4) dans la rainure (1) est garanti par les superficies suffisantes des portées d'appui (15 et 16), par lesquelles les forces centrifuges exercées sur l'aube (3) sont transmises au disque (2) avec une faible pression de contact. Et quand la machine revient au repos et que les forces centrifuges cessent, le bulbe (3) et les inserts (11) retombent au fond de la rainure, le fond (8) du bulbe (3) reposant sur les parties internes (14) et les parties externes (13) reposant sur la face périphérique (7), sans qu'aucun coincement ne soit à redouter.A satisfactory support of the blade (4) in the groove (1) is guaranteed by the sufficient areas of the bearing surfaces (15 and 16), by which the centrifugal forces exerted on the blade (3) are transmitted to the disk (2) with low contact pressure. And when the machine returns to rest and the centrifugal forces cease, the bulb (3) and the inserts (11) fall back to the bottom of the groove, the bottom (8) of the bulb (3) resting on the internal parts (14) and the outer portions (13) resting on the peripheral face (7), without any jamming is to be feared.
Claims (4)
- Layout comprising a disk (2) and at least one blade (4) with a bulb (3) which is housed in a groove (1) in the disk, the groove comprising two faces (6) overhanging a bottom of the groove, with a first inclination relative to a median plane of the groove, the bulb (3) comprising two upper faces (9) located under the overhanging faces (6) but with a second inclination relative to said median plane that is less than the first inclination, and inserts (11) being added between the bulb (3) and the disk (2), which include main parts (12) arranged between the overhanging faces and the upper faces (9), and external parts (13) connected to the main parts and extending through an opening in the groove, characterised in that the external parts extend on a peripheral face (7) of the disk (2), distance between them increasing towards free ends opposite the main parts, and the inserts (11) also comprise internal parts (14) connected to the main parts (13), extending between the bulb and the bottom (5) of the groove, distance between them reducing towards free ends opposite the main parts.
- Layout according to claim 1, characterised in that the blades are made of a composite material and the disk is made of metal.
- Layout according to either claim 1 or 2, characterised in that the inserts are separated from each other at the internal parts (14).
- Layout according to any one of claims 1 to 3, characterised in that, in an operating state in which the bulb (3) bears on the central parts (12) and the central parts bear on the overhanging faces (6), clearances exist between the external parts (13) and the disk and between the internal parts (14) and the bulb.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1050164A FR2955143B1 (en) | 2010-01-12 | 2010-01-12 | ARBOR DISK ARRANGEMENT |
PCT/EP2011/050245 WO2011086056A1 (en) | 2010-01-12 | 2011-01-11 | Vaned disk arrangement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2524112A1 EP2524112A1 (en) | 2012-11-21 |
EP2524112B1 true EP2524112B1 (en) | 2014-12-17 |
Family
ID=42537539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11700085.1A Active EP2524112B1 (en) | 2010-01-12 | 2011-01-11 | Vaned disk arrangement |
Country Status (4)
Country | Link |
---|---|
US (1) | US9157330B2 (en) |
EP (1) | EP2524112B1 (en) |
FR (1) | FR2955143B1 (en) |
WO (1) | WO2011086056A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2972483B1 (en) | 2011-03-07 | 2013-04-19 | Snecma | TURBINE HOUSING COMPRISING MEANS FOR FIXING RING SECTIONS |
FR2981132B1 (en) * | 2011-10-10 | 2013-12-06 | Snecma | DISCHARGE COOLING TURBOMACHINE ASSEMBLY |
US10519788B2 (en) * | 2013-05-29 | 2019-12-31 | General Electric Company | Composite airfoil metal patch |
FR3009579B1 (en) | 2013-08-07 | 2015-09-25 | Snecma | TURBINE HOUSING IN TWO MATERIALS |
CA2915234A1 (en) | 2015-01-13 | 2016-07-13 | Rolls-Royce Corporation | Turbine wheel with clamped blade attachment |
US10577951B2 (en) | 2016-11-30 | 2020-03-03 | Rolls-Royce North American Technologies Inc. | Gas turbine engine with dovetail connection having contoured root |
US10605100B2 (en) * | 2017-05-24 | 2020-03-31 | General Electric Company | Ceramic matrix composite (CMC) turbine blade assembly, dovetail sleeve, and method of mounting CMC turbine blade |
JP6765344B2 (en) | 2017-05-31 | 2020-10-07 | 三菱重工業株式会社 | Method for manufacturing composite blades and composite blades |
FR3130906B1 (en) * | 2021-12-16 | 2023-11-24 | Safran Aircraft Engines | Turbomachine rotor |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2950083A (en) * | 1954-07-23 | 1960-08-23 | Thompson Ramo Wooldridge Inc | Blade assembly |
US3132841A (en) * | 1958-05-12 | 1964-05-12 | Gen Motors Corp | Compressor blade and manufacture thereof |
US4417854A (en) * | 1980-03-21 | 1983-11-29 | Rockwell International Corporation | Compliant interface for ceramic turbine blades |
FR2608674B1 (en) * | 1986-12-17 | 1991-04-19 | Snecma | CERAMIC BLADE TURBINE WHEEL |
US6619924B2 (en) * | 2001-09-13 | 2003-09-16 | General Electric Company | Method and system for replacing a compressor blade |
US7713029B1 (en) * | 2007-03-28 | 2010-05-11 | Florida Turbine Technologies, Inc. | Turbine blade with spar and shell construction |
US8206118B2 (en) | 2008-01-04 | 2012-06-26 | United Technologies Corporation | Airfoil attachment |
FR2972483B1 (en) | 2011-03-07 | 2013-04-19 | Snecma | TURBINE HOUSING COMPRISING MEANS FOR FIXING RING SECTIONS |
-
2010
- 2010-01-12 FR FR1050164A patent/FR2955143B1/en not_active Expired - Fee Related
-
2011
- 2011-01-11 WO PCT/EP2011/050245 patent/WO2011086056A1/en active Application Filing
- 2011-01-11 US US13/520,433 patent/US9157330B2/en active Active
- 2011-01-11 EP EP11700085.1A patent/EP2524112B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
FR2955143A1 (en) | 2011-07-15 |
US9157330B2 (en) | 2015-10-13 |
US20120308391A1 (en) | 2012-12-06 |
FR2955143B1 (en) | 2012-05-11 |
WO2011086056A1 (en) | 2011-07-21 |
EP2524112A1 (en) | 2012-11-21 |
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