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EP1335113A1 - Fastening device for gas turbine distributor sectors - Google Patents

Fastening device for gas turbine distributor sectors Download PDF

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Publication number
EP1335113A1
EP1335113A1 EP03290288A EP03290288A EP1335113A1 EP 1335113 A1 EP1335113 A1 EP 1335113A1 EP 03290288 A EP03290288 A EP 03290288A EP 03290288 A EP03290288 A EP 03290288A EP 1335113 A1 EP1335113 A1 EP 1335113A1
Authority
EP
European Patent Office
Prior art keywords
sectors
sealing
distributor
casing
axial
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
Application number
EP03290288A
Other languages
German (de)
French (fr)
Other versions
EP1335113B1 (en
Inventor
Patrick Joseph Marie Girard
Sébastien Alain Imbourg
Philippe Jean-Pierre Pabion
Jean-Luc Soupizon
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 EP1335113A1 publication Critical patent/EP1335113A1/en
Application granted granted Critical
Publication of EP1335113B1 publication Critical patent/EP1335113B1/en
Anticipated expiration legal-status Critical
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    • 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
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
    • F01D9/044—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators permanently, e.g. by welding, brazing, casting or the like
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/246—Fastening of diaphragms or stator-rings

Definitions

  • This invention relates to an arrangement for hanging sectors in an arc distributor.
  • the distributors considered here are meet in turbomachinery and carry blades attached to the stator responsible for straightening the flow of gas. Distributor areas are mounted at the inside of the stator housing by overlaps of hooks by making them rest on bearing faces some of which must take back the efforts exerted on the distributor vanes.
  • the outer ring 3 of distributor sectors 1 includes an upstream leg 4 and a downstream leg 5 all two in the form of a hook, and the casing 2 comprises upstream legs 6 and downstream legs 7 still in the form of hook, and associated in pairs with a distributor given.
  • leg 4 of sector 1 is engaged around leg 6 of housing 2, but downstream it is the tab 7 of the casing 2 which is engaged around the leg 5 of sector 1. This is justified if we consider that the forces F exerted on the distributor are essentially directed downstream, and transmitted to casing 2 partially as a moment comprising a centripetal radial force R1 at the front and an R2 centrifuge downstream. Legs 4 and 5 of sectors 1 therefore rest on legs 6 and 7 of the casing 2 to the contact faces 8 and 9 which are faces recovery of efforts.
  • the axial component of the efforts F is also transmitted to the casing 2 by an axial force X which is exerted downstream of leg 5, at one end curved hook 10 of tab 7; the face of contact between tab 5 and end 10 is therefore a axial resumption of force 11.
  • sectors 1 and 16 of distributor and sealing which alternate axially in the machine are assembled together since the outer ring 3 of distributor sectors 1 includes upstream a tab 20 which engages in the downstream end of the neighboring sealing sectors 16, and that the sealing sectors 16 likewise have a upstream tab 21 which engages under tab 5 downstream of the neighboring crown 3 of the distributor 1.
  • the legs 20 and 21 maintain sectors 1 in position and 16.
  • the invention relates to a distributor sector attachment arrangement of a different kind, the essential purpose of which is not use hook-shaped legs belonging to the casing, in order to simplify it and to make the mounting of the dispenser more convenient.
  • the basic idea behind the invention is that the force recovery faces in the directions directed axially and radially outwards will now be located on the sealing areas, the casing essentially providing only unsolicited or poorly stressed bearing faces, if although the efforts it must withstand will be considerably reduced.
  • a notable form of the invention is characterized in that the distributor sectors and sealing include tabs at two ends opposite axial, the legs of the sectors of dispenser are clamped between the legs of the sealing sectors and the housing, and the sectors are fixed to the housing by a portion median.
  • the overall shape of the distributor sectors, to which the reference 25 is now associated, is not substantially modified, and they also include an outer ring 26 provided with a tab 27 upstream and a tab 28 at the downstream.
  • the legs 27 and 28 are supported by their outer faces on radial faces 29 and 30 directed towards the inside of the housing, which now bears the reference 31.
  • Sealing sectors, now 32, are still arranged alternately with the sectors 25 of dispenser and they comprise, in addition to an abradable crown 33, an outer crown 34 whose downstream 35 and upstream ends 36 serve to enclose the tabs 27 and 28 between them and between the bearing faces 29 and 30 respectively of the casing 31.
  • the downstream end 35 carries a radial support face directed towards the outside 37 on which the centripetal radial force R 1 weighs
  • the upstream end 36 carries a radial support face directed towards the outside 38 and an axial bearing face 39 for resuming the axial force X.
  • the outer rings 34 are joined to the casing 31 with a middle portion provided with a rib 40 (or a boss) penetrating into a groove 41 (or a creu x) of complementary shape of the casing 31 to precisely adjust the position of the sealing sectors 32. Screws 42 are engaged through the boss 40 and the casing 31 to fix the sealing sectors 32 to the latter. These screws (42) are secured to the housing by the nut 46.
  • Another fixing means such as a pin engaged by force, would fulfill the same function.
  • the complicated and fragile forms of hooks really disappear from the housing 31 like sealing sectors 32.
  • the bearing faces 29 and 30 of the casing 31 are established on massive parts and therefore resistant.
  • the radial and axial R2 and X forces exerted by the leg downstream 28 are on different pieces, which relieves them both.
  • the forces R 1 and X exert antagonistic moments R 1 xL and Xxl on the outer ring 34 around the point of attachment of the screw 42 to the casing 31, and it is possible to adjust the lever arms L and 1 of the forces R and X respectively by a judicious choice of the position of the screw 42 so that their moments have comparable values and that the bending produced on the screw 42 is therefore greatly reduced.
  • the distributor sectors 25 can be mounted by purely axial movements, the sealing sectors 32 then being mounted behind them, which is more convenient and gives more freedom to arrange the machine. Corner pieces 43, fixed to the casing 31 by pins 44, can be added to provide an axial abutment face 45 to the distributor sectors 25.
  • this typical axial assembly allows decrease the axial clearances between the stator vanes (inner ring 12 of sectors 1 in Figure 1) and the rotor blades (inner ring 13 of the blades rotor 15 in Figure 1); as a result, this reduces the leakage sections (47) between rotor and stator and ensures better efficiency of the whole planed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Surgical Instruments (AREA)
  • Coating Apparatus (AREA)

Abstract

Each independent attaching section includes a radial bearing face (37) and an axial bearing face (39) which resist forces applied on vanes in distributor sectors (25). Sealing sectors (32) are fixed to a stator casing (31) and alternate with distributor sectors in axial direction. The radial bearing face and axial bearing face are located on the sealing sectors.

Description

Cette invention concerne un agencement d'accrochage de secteurs en arc de cercle de distributeur.This invention relates to an arrangement for hanging sectors in an arc distributor.

Les distributeurs considérés ici se rencontrent dans les turbomachines et portent les aubes fixées au stator chargées de redresser l'écoulement des gaz. Les secteurs du distributeur sont montés à l'intérieur du carter de stator par des imbrications de crochets en les faisant reposer sur des faces d'appui dont certaines doivent reprendre les efforts exercés sur les aubes du distributeur. Dans la réalisation connue de la figure 1, où les secteurs portent la référence 1 et le carter de stator la référence 2, la couronne extérieure 3 des secteurs 1 de distributeur comprend une patte amont 4 et une patte aval 5 toutes deux en forme de crochet, et le carter 2 comprend des pattes amont 6 et des pattes aval 7 encore en forme de crochet, et associées par paires à un distributeur donné. A l'amont, la patte 4 du secteur 1 est engagée autour de la patte 6 du carter 2, mais à l'aval c'est la patte 7 du carter 2 qui est engagée autour de la patte 5 du secteur 1. Ceci est justifié si on considère que les efforts F exercés sur le distributeur sont essentiellement dirigés vers l'aval, et transmis au carter 2 partiellement sous forme d'un moment comprenant une force radiale centripète R1 à l'avant et une centrifuge R2 à l'aval. Les pattes 4 et 5 des secteurs 1 s'appuient donc sur les pattes 6 et 7 du carter 2 aux faces de contact 8 et 9 qui sont des faces de reprise d'efforts. La composante axiale des efforts F est aussi transmise au carter 2 par une force axiale X qui s'exerce à l'aval de la patte 5, à une extrémité courbée en crochet 10 de la patte 7 ; la face de contact entre la patte 5 et l'extrémité 10 est donc une face axiale de reprise d'effort 11.The distributors considered here are meet in turbomachinery and carry blades attached to the stator responsible for straightening the flow of gas. Distributor areas are mounted at the inside of the stator housing by overlaps of hooks by making them rest on bearing faces some of which must take back the efforts exerted on the distributor vanes. In the realization known from FIG. 1, where the sectors bear the reference 1 and the stator housing reference 2, the outer ring 3 of distributor sectors 1 includes an upstream leg 4 and a downstream leg 5 all two in the form of a hook, and the casing 2 comprises upstream legs 6 and downstream legs 7 still in the form of hook, and associated in pairs with a distributor given. Upstream, leg 4 of sector 1 is engaged around leg 6 of housing 2, but downstream it is the tab 7 of the casing 2 which is engaged around the leg 5 of sector 1. This is justified if we consider that the forces F exerted on the distributor are essentially directed downstream, and transmitted to casing 2 partially as a moment comprising a centripetal radial force R1 at the front and an R2 centrifuge downstream. Legs 4 and 5 of sectors 1 therefore rest on legs 6 and 7 of the casing 2 to the contact faces 8 and 9 which are faces recovery of efforts. The axial component of the efforts F is also transmitted to the casing 2 by an axial force X which is exerted downstream of leg 5, at one end curved hook 10 of tab 7; the face of contact between tab 5 and end 10 is therefore a axial resumption of force 11.

Un inconvénient de cette conception est que les pattes 6 et 7 du carter 2 sont fortement chargées, ce qui est d'autant plus préoccupant que leur forme en crochet les rend fragiles et qu'elles sont soumises à des échauffements en service d'autant plus importants qu'elles sont fortement saillantes vers l'intérieur de la veine des gaz, et que la résistance intrinsèque de la matière qui les constitue peut être affaiblie. Le carter se trouve alourdi par les pattes qu'il faut rendre massives, sa fabrication est plus difficile en raison de la complication de sa forme et il doit en pratique être construit en un matériau assez noble qui n'est en rien justifié par les efforts qu'il doit subir hors des pattes.One drawback of this design is that the legs 6 and 7 of the casing 2 are heavily loaded, which is all the more worrying as their shape in hook makes them fragile and they are subjected to even higher temperatures during service that they are strongly projecting towards the inside of the gas stream, and that the intrinsic resistance of the matter which constitutes them can be weakened. The casing is weighed down by the required legs make it massive, its manufacture is more difficult in because of the complication of its form and it must practical to be constructed of a fairly noble material which is in no way justified by the efforts he must undergo off the legs.

Un autre inconvénient de cette conception apparaít au montage : comme il est nécessaire que la patte aval 5 des secteurs 1 passe par-dessous l'extrémité courbée en crochet 10, les secteurs 1 doivent être présentés obliquement, avant d'être tournés quand ils ont été engagés derrière l'extrémité courbée en crochet 10, pour établir le contact à la face de reprise d'efforts 9 en aval. Les flèches Z1 et Z2 illustrent ce mouvement d'inclinaison puis de redressement des secteurs 1 au montage. On s'aperçoit qu'il faut prévoir un jeu suffisant entre une couronne intérieure 12 des secteurs 1 et une couronne intérieure 13 des étages d'aubes 14 du rotor 15, ce qui oblige à compromettre l'étanchéité à cet endroit.Another disadvantage of this design appears during assembly: as it is necessary that the downstream leg 5 of sectors 1 goes under curved hook end 10, sectors 1 must be presented obliquely, before being turned when they were engaged behind the end curved hook 10, to establish contact with the force recovery face 9 downstream. Arrows Z1 and Z2 illustrate this tilting movement and then recovery of sectors 1 during assembly. We notice that there should be sufficient clearance between a crown inner 12 of sectors 1 and an inner ring 13 of the blade stages 14 of the rotor 15, which requires that compromise the seal at this location.

Quand les secteurs de distributeurs ont été mis en place, il est possible d'installer des secteurs d'étanchéité 16 situés en aval, qui comprennent une couronne de matière dite abradable 17 coopérant avec des léchettes 18 des aubes mobiles 14 pour former des joints à labyrinthes, et qui comprennent encore une couronne de support 19 dont les extrémités sont configurées pour s'adapter sur les pattes 6 et 7 du carter 2. Le système d'accrochage est d'ailleurs similaire à celui des secteurs 1 de distributeur, puisque la couronne 19 repose à l'amont sur une face radialement extérieure d'une des pattes (7) du carter 2, et à l'aval sur une face radialement intérieure de l'autre des pattes (6). Enfin, les secteurs 1 et 16 de distributeur et d'étanchéité qui alternent axialement dans la machine sont assemblés entre eux puisque la couronne extérieure 3 des secteurs 1 de distributeur comprend à l'amont une patte 20 qui s'engage dans l'extrémité aval des secteurs d'étanchéité 16 voisins, et que les secteurs d'étanchéité 16 ont de même une patte amont 21 qui s'engage sous la patte 5 en aval de la couronne voisine 3 du distributeur 1. Les pattes 20 et 21 assurent le maintien en position des secteurs 1 et 16. When the distributor sectors were set up, it is possible to install sectors sealing 16 located downstream, which include a crown of so-called abradable material 17 cooperating with wipers 18 of the moving blades 14 to form joints to labyrinths, and which still include a support ring 19 whose ends are configured to fit on legs 6 and 7 of casing 2. The attachment system is also similar to that of distributor sectors 1, since the crown 19 rests upstream on one side radially outer of one of the legs (7) of the casing 2, and downstream on a radially inner face of the other of the legs (6). Finally, sectors 1 and 16 of distributor and sealing which alternate axially in the machine are assembled together since the outer ring 3 of distributor sectors 1 includes upstream a tab 20 which engages in the downstream end of the neighboring sealing sectors 16, and that the sealing sectors 16 likewise have a upstream tab 21 which engages under tab 5 downstream of the neighboring crown 3 of the distributor 1. The legs 20 and 21 maintain sectors 1 in position and 16.

Le document US - 4 529 355 - A décrit un agencement où le carter porte les secteurs d'étanchéité et de distributeurs par des entretoises qui lui sont vissées. Il est donc lisse, mais les crochets sont sur les entretoises qui sont par ailleurs lourdes et encombrantes. Cette conception antérieure semble donc encore moins bonne.Document US-4,529,355-A describes a arrangement where the housing carries the sealing sectors and distributors by spacers which are screwed. So it's smooth, but the hooks are on the spacers which are otherwise heavy and cumbersome. This earlier conception therefore seems even worse.

Maintenant, l'invention est relative à un agencement d'accrochage de secteurs de distributeur d'un genre différent, dont le but essentiel est de ne pas recourir à des pattes en forme de crochet appartenant au carter, afin de simplifier celui-ci et de rendre le montage du distributeur plus commode. L'idée fondamentale à la source de l'invention est que les faces de reprise d'efforts dans les directions dirigées axialement et radialement vers l'extérieur seront désormais situées sur les secteurs d'étanchéité, le carter ne fournissant plus essentiellement que des faces d'appui non sollicitées ou peu sollicitées, si bien que les efforts auquel il doit résister seront considérablement réduits.Now, the invention relates to a distributor sector attachment arrangement of a different kind, the essential purpose of which is not use hook-shaped legs belonging to the casing, in order to simplify it and to make the mounting of the dispenser more convenient. The basic idea behind the invention is that the force recovery faces in the directions directed axially and radially outwards will now be located on the sealing areas, the casing essentially providing only unsolicited or poorly stressed bearing faces, if although the efforts it must withstand will be considerably reduced.

Une forme notable de l'invention est caractérisée en ce que les secteurs de distributeurs et d'étanchéité comprennent des pattes à deux extrémités axiales opposées, les pattes des secteurs de distributeur sont enserrées entre les pattes des secteurs d'étanchéité et le carter, et les secteurs d'étanchéité sont fixés au carter par une portion médiane.A notable form of the invention is characterized in that the distributor sectors and sealing include tabs at two ends opposite axial, the legs of the sectors of dispenser are clamped between the legs of the sealing sectors and the housing, and the sectors are fixed to the housing by a portion median.

Dans des formes particulières de réalisation, on s'efforce de réduire les efforts transmis au carter par les secteurs d'étanchéité, et notamment le moment résultant des efforts produits sur les différences faces d'appui.In particular forms of we strive to reduce efforts transmitted to the casing by the sealing sectors, and in particular the moment resulting from the efforts produced on the differences between the bearing faces.

Tous les aspects de l'invention seront maintenant découverts au moyen de la comparaison des figures suivantes :

  • la figure 1 déjà décrite illustre un agencement d'accrochage de secteur de distributeur d'un genre connu ;
  • et la figure 2 illustre l'agencement conforme à l'invention dans une réalisation favorite.
All aspects of the invention will now be discovered by means of the comparison of the following figures:
  • Figure 1 already described illustrates a dispenser sector attachment arrangement of a known type;
  • and Figure 2 illustrates the arrangement according to the invention in a preferred embodiment.

La forme d'ensemble des secteurs de distributeurs, auxquels est maintenant associée la référence 25, n'est pas sensiblement modifiée, et ils comprennent encore une couronne extérieure 26 munie d'une patte 27 à l'amont et une patte 28 à l'aval. Les pattes 27 et 28 s'appuient par leurs faces extérieures sur des faces 29 et 30 radiales dirigées vers l'intérieur du carter, qui porte désormais la référence 31. Des secteurs d'étanchéité, désormais 32, sont encore disposés alternativement avec les secteurs 25 de distributeur et ils comprennent, en plus d'une couronne abradable 33, une couronne extérieure 34 dont les extrémités aval 35 et amont 36 servent à enserrer les pattes 27 et 28 entre elles et entre les faces d'appui 29 et 30 respectivement du carter 31. Plus précisément, l'extrémité aval 35 porte une face d'appui radiale dirigée vers l'extérieur 37 sur laquelle pèse l'effort radial centripète R1, et l'extrémité amont 36 porte une face d'appui radiale dirigée vers l'extérieur 38 et une face axiale d'appui 39 de reprise de l'effort axial X. Les couronnes extérieures 34 sont unies au carter 31 à une portion médiane munie d'une nervure 40 (ou d'un bossage) pénétrant dans un sillon 41 (ou un creux) de forme complémentaire du carter 31 pour ajuster avec précision la position des secteurs d'étanchéité 32. Des vis 42 sont engagées à travers le bossage 40 et le carter 31 pour fixer les secteurs d'étanchéité 32 à celui-ci. Ces vis (42) sont solidarisées avec le carter par l'écrou 46. Un autre moyen de fixation, tel qu'un pion engagé à force, remplirait la même fonction.The overall shape of the distributor sectors, to which the reference 25 is now associated, is not substantially modified, and they also include an outer ring 26 provided with a tab 27 upstream and a tab 28 at the downstream. The legs 27 and 28 are supported by their outer faces on radial faces 29 and 30 directed towards the inside of the housing, which now bears the reference 31. Sealing sectors, now 32, are still arranged alternately with the sectors 25 of dispenser and they comprise, in addition to an abradable crown 33, an outer crown 34 whose downstream 35 and upstream ends 36 serve to enclose the tabs 27 and 28 between them and between the bearing faces 29 and 30 respectively of the casing 31. More specifically, the downstream end 35 carries a radial support face directed towards the outside 37 on which the centripetal radial force R 1 weighs, and the upstream end 36 carries a radial support face directed towards the outside 38 and an axial bearing face 39 for resuming the axial force X. The outer rings 34 are joined to the casing 31 with a middle portion provided with a rib 40 (or a boss) penetrating into a groove 41 (or a creu x) of complementary shape of the casing 31 to precisely adjust the position of the sealing sectors 32. Screws 42 are engaged through the boss 40 and the casing 31 to fix the sealing sectors 32 to the latter. These screws (42) are secured to the housing by the nut 46. Another fixing means, such as a pin engaged by force, would fulfill the same function.

La plus grande partie des efforts s'exerçant sur les secteurs 25 de distribution est reprise ici par les secteurs d'étanchéité 32. Ceux-ci doivent donc être dimensionnés en conséquence, mais ils sont cependant plutôt moins chargés que les pattes en forme de crochet du carter 2 de la réalisation connue.Most of the effort practicing on the eastern distribution sectors 25 taken up here by the sealing sectors 32. These must therefore be sized accordingly, but they are rather less loaded than the legs hook shape of the casing 2 of the known embodiment.

Les formes compliquées et fragiles des crochets disparaissent en vérité du carter 31 comme des secteurs d'étanchéité 32. Les faces d'appui 29 et 30 du carter 31 sont établies sur des parties massivese et donc résistantes. Les forces R2 et X radiale et axiale exercées par la patte à l'aval 28 le sont sur des pièces différentes, ce qui les soulage toutes deux.The complicated and fragile forms of hooks really disappear from the housing 31 like sealing sectors 32. The bearing faces 29 and 30 of the casing 31 are established on massive parts and therefore resistant. The radial and axial R2 and X forces exerted by the leg downstream 28 are on different pieces, which relieves them both.

En outre, les forces R1 et X exercent des moments R1xL et Xxl antagonistes sur la couronne extérieure 34 autour du point d'attache de la vis 42 au carter 31, et il est possible d'ajuster les bras de levier L et 1 des forces R et X respectivement par un choix judicieux de la position de la vis 42 pour que leurs moments aient des valeurs comparables et que la flexion produite sur la vis 42 soit donc très diminuée. Par ailleurs, on observe que les secteurs 25 de distributeur peuvent être montés par des mouvements purement axiaux, les secteurs d'étanchéité 32 étant ensuite montés derrière eux, ce qui est plus commode et donne plus de liberté pour agencer la machine. Des pièces 43 en cornière, fixées au carter 31 par des pions 44, peuvent être ajoutées pour offrir une face de butée axiale 45 aux secteurs 25 de distributeur.In addition, the forces R 1 and X exert antagonistic moments R 1 xL and Xxl on the outer ring 34 around the point of attachment of the screw 42 to the casing 31, and it is possible to adjust the lever arms L and 1 of the forces R and X respectively by a judicious choice of the position of the screw 42 so that their moments have comparable values and that the bending produced on the screw 42 is therefore greatly reduced. Furthermore, it is observed that the distributor sectors 25 can be mounted by purely axial movements, the sealing sectors 32 then being mounted behind them, which is more convenient and gives more freedom to arrange the machine. Corner pieces 43, fixed to the casing 31 by pins 44, can be added to provide an axial abutment face 45 to the distributor sectors 25.

En plus, ce montage typique axial permet de diminuer les jeux axiaux entre les aubes du stator (couronne intérieure 12 des secteurs 1 de la figure 1) et les aubes du rotor (couronne intérieure 13 des aubes du rotor 15 sur la figure 1) ; en conséquence, ceci permet de diminuer les sections de fuite (47) entre rotor et stator et assure un meilleur rendement de l'ensemble aubagé.In addition, this typical axial assembly allows decrease the axial clearances between the stator vanes (inner ring 12 of sectors 1 in Figure 1) and the rotor blades (inner ring 13 of the blades rotor 15 in Figure 1); as a result, this reduces the leakage sections (47) between rotor and stator and ensures better efficiency of the whole planed.

Quoique la vue de la figure 2 soit moins complète que ceslle de la figure 1, il doit être compris que l'invention s'étend sur un groupe d'étages de secteurs de distributeur 25 et d'étanchéité 32, et notamment qu'un étage de secteurs de distributeurs 25 s'appuie par ses deux extrémités sur deux étages de secteurs d'étanchéité 32 successifs de la manière décrite. On s'est efforcé surtout de représenter les secteurs d'étanchéité 32 puisque les secteurs de distributeur 25 sont essentiellement identiques à ceux de la figure 1.Although the view in Figure 2 is less complete as shown in Figure 1, it must be understood that the invention extends over a group of floors distributor sectors 25 and sealing sectors 32, and in particular that one floor of distributor sectors 25 is supported by its two ends on two floors of sealing sectors 32 successive in the way described. We tried above all to represent the sealing sectors 32 since the sectors of distributor 25 are essentially identical to those of figure 1.

Claims (5)

Agencement d'accrochage de secteurs (25) en arc de cercle de distributeurs porteurs d'aubes à un carter (31) de stator, comprenant des faces d'appui (29, 30, 37, 38, 39) d'orientation radiale et axiale pour les secteurs, réparties sur le carter et des pièces autonomes d'accrochage, dont au moins une face d'orientation radiale orientée vers l'extérieur (37) et une face d'orientation axiale (39) qui sont toutes deux des faces de reprise d'efforts exercés sur les aubes des secteurs, des secteurs d'étanchéité (32) étant fixés au carter et alternant avec les secteurs des distributeurs en direction axiale, caractérisé en ce que lesdites faces d'orientation radiale vers l'extérieur et axiale de reprise d'efforts sont situées sur les secteurs d'étanchéité.Arrangement for attaching sectors (25) in an arc of distributors carrying blades to a stator housing (31), comprising bearing faces (29, 30, 37, 38, 39) of radial orientation and axial for the sectors, distributed over the casing and independent attachment parts, at least one face of radial orientation oriented towards the outside (37) and one face of axial orientation (39) which are both faces resumption of forces exerted on the blades of the sectors, sealing sectors (32) being fixed to the casing and alternating with the sectors of the distributors in axial direction, characterized in that said faces of radial orientation towards the outside and axial force recovery are located on the sealing sectors. Agencement d'accrochage de secteurs en arc de cercle de distributeur selon la revendication 1, caractérisé en ce que les secteurs de distributeur et d'étanchéité comprennent des pattes à deux extrémités axiales opposées, les pattes (27, 28) des secteurs de distributeur sont enserrées entre les pattes (35, 36) des secteurs (32) d'étanchéité et le carter (31), et les secteurs d'étanchéité sont fixés au carter par une portion médiane.Arrangement for securing sectors in a circular arc of a distributor according to claim 1, characterized in that the distributor and sealing sectors comprise lugs with two opposite axial ends, the lugs (27, 28) of the distributor sectors are sandwiched between the tabs (35, 36) of the sealing sectors (32) and the casing (31), and the sealing sectors are fixed to the casing by a middle portion. Agencement d'accrochage de secteurs en arc de cercle de distributeur selon la revendication 2, caractérisé en ce que les secteurs d'étanchéité sont fixés au carter par un élément (42) traversant le carter et comprenant des moyens de positionnement sur le carter.Arrangement for hooking sectors in the arc of a distributor circle according to claim 2, characterized in that the sealing sectors are fixed to the housing by an element (42) passing through the housing and comprising positioning means on the housing. Agencement d'accrochage de secteurs en arc de cercle de distributeur selon l'une quelconque des revendications 2 ou 3, caractérisé en ce que la face d'orientation axiale (39) de reprise d'efforts est située axialement en amont des secteurs d'étanchéité, et la face d'orientation radiale orientée vers l'extérieur (37) de reprise d'efforts est située axialement en aval des secteurs d'étanchéité.Arrangement for securing sectors in the arc of a distributor circle according to any one of claims 2 or 3, characterized in that the axial orientation face (39) of force recovery is located axially upstream of the sectors of sealing, and the outwardly facing radial orientation face (37) of force recovery is located axially downstream of the sealing sectors. Agencement d'accrochage de secteurs en arc de cercle de distributeur selon les revendications 3 et 4, caractérisé en ce que les secteurs d'étanchéité sont conçus de façon que les efforts repris par les faces de reprise d'efforts exercent des moments (R1xL, Xx1) antagonistes de valeurs sensiblement égales sur les éléments traversant le carter.Arrangement for securing sectors in the arc of a distributor circle according to claims 3 and 4, characterized in that the sealing sectors are designed so that the forces taken up by the force-absorbing faces exert moments (R 1 xL, Xx1) antagonists of substantially equal values on the elements passing through the casing.
EP03290288A 2002-02-07 2003-02-05 Fastening device for gas turbine distributor sectors Expired - Lifetime EP1335113B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0201460A FR2835563B1 (en) 2002-02-07 2002-02-07 ARRANGEMENT FOR HANGING SECTORS IN A CIRCLE OF A CIRCLE OF A BLADE-BEARING DISTRIBUTOR
FR0201460 2002-02-07

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EP1335113A1 true EP1335113A1 (en) 2003-08-13
EP1335113B1 EP1335113B1 (en) 2005-11-02

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EP03290288A Expired - Lifetime EP1335113B1 (en) 2002-02-07 2003-02-05 Fastening device for gas turbine distributor sectors

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US (2) US20030146578A1 (en)
EP (1) EP1335113B1 (en)
JP (1) JP4087720B2 (en)
CN (1) CN100357569C (en)
CA (1) CA2418357C (en)
DE (1) DE60302077T2 (en)
ES (1) ES2250844T3 (en)
FR (1) FR2835563B1 (en)
MA (1) MA25948A1 (en)
RU (1) RU2311539C2 (en)
UA (1) UA76424C2 (en)

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FR2981602A1 (en) * 2011-10-25 2013-04-26 Snecma Propulsion Solide PROCESS FOR MANUFACTURING TURBINE DISPENSER SECTOR OR COMPRESSOR RECTIFIER OF COMPOSITE MATERIAL FOR TURBOMACHINE AND TURBINE OR COMPRESSOR INCORPORATING A DISPENSER OR RECTIFIER FORMED OF SUCH SECTORS
EP2896796A1 (en) * 2014-01-20 2015-07-22 Techspace Aero S.A. Stator of an axial turbomachine and corresponding turbomachine
FR3083564A1 (en) * 2018-07-05 2020-01-10 Safran Aircraft Engines TURBINE COMPRISING AN ABRADABLE ELEMENT WITH AN ADJUSTABLE RADIAL POSITION

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FR2875535B1 (en) * 2004-09-21 2009-10-30 Snecma Moteurs Sa TURBINE MODULE FOR GAS TURBINE ENGINE
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FR2928961B1 (en) * 2008-03-19 2015-11-13 Snecma SECTORIZED DISPENSER FOR A TURBOMACHINE.
FR2930592B1 (en) * 2008-04-24 2010-04-30 Snecma TURBINE DISPENSER FOR A TURBOMACHINE
FR2939836B1 (en) * 2008-12-12 2015-05-15 Snecma SEAL FOR PLATFORM SEAL IN A TURBOMACHINE ROTOR
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FR2974841B1 (en) * 2011-05-04 2013-06-07 Snecma SEALING DEVICE FOR TURBINE MACHINE TURBINE DISPENSER
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RU190280U1 (en) * 2019-01-09 2019-06-25 Публичное Акционерное Общество "Одк-Сатурн" DEVICE FOR FIXING SEGMENT OF SEGPLATES IN THE FORCE CASE OF A TURBINE STATOR
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US7789619B2 (en) 2006-03-30 2010-09-07 Snecma Device for attaching ring sectors around a turbine rotor of a turbomachine
FR2899274A1 (en) * 2006-03-30 2007-10-05 Snecma Sa DEVICE FOR FASTENING RING SECTIONS AROUND A TURBINE WHEEL OF A TURBOMACHINE
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FR2981602A1 (en) * 2011-10-25 2013-04-26 Snecma Propulsion Solide PROCESS FOR MANUFACTURING TURBINE DISPENSER SECTOR OR COMPRESSOR RECTIFIER OF COMPOSITE MATERIAL FOR TURBOMACHINE AND TURBINE OR COMPRESSOR INCORPORATING A DISPENSER OR RECTIFIER FORMED OF SUCH SECTORS
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FR3083564A1 (en) * 2018-07-05 2020-01-10 Safran Aircraft Engines TURBINE COMPRISING AN ABRADABLE ELEMENT WITH AN ADJUSTABLE RADIAL POSITION

Also Published As

Publication number Publication date
DE60302077T2 (en) 2006-07-20
FR2835563B1 (en) 2004-04-02
US20030146578A1 (en) 2003-08-07
JP4087720B2 (en) 2008-05-21
ES2250844T3 (en) 2006-04-16
FR2835563A1 (en) 2003-08-08
EP1335113B1 (en) 2005-11-02
CN100357569C (en) 2007-12-26
UA76424C2 (en) 2006-08-15
CA2418357C (en) 2010-10-26
CN1443927A (en) 2003-09-24
MA25948A1 (en) 2003-12-31
CA2418357A1 (en) 2003-08-07
US20050042081A1 (en) 2005-02-24
US7290982B2 (en) 2007-11-06
RU2311539C2 (en) 2007-11-27
DE60302077D1 (en) 2005-12-08
JP2003269111A (en) 2003-09-25

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