EP0589736A1 - Turbomachine with a device for stopping axial gas flows at the periphery of stator stages - Google Patents

Turbomachine with a device for stopping axial gas flows at the periphery of stator stages Download PDF

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Publication number
EP0589736A1
EP0589736A1 EP19930402092 EP93402092A EP0589736A1 EP 0589736 A1 EP0589736 A1 EP 0589736A1 EP 19930402092 EP19930402092 EP 19930402092 EP 93402092 A EP93402092 A EP 93402092A EP 0589736 A1 EP0589736 A1 EP 0589736A1
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EP
European Patent Office
Prior art keywords
casing
sole
ferrule
turbomachine
ribs
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
EP19930402092
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German (de)
French (fr)
Other versions
EP0589736B1 (en
Inventor
Jean-Louis Charbonnel
Pierre Debeneix
Christopher Charles Glynn
Daniel Jean Marey
Jean-Pierre André Joseph Mourlan
Jacky Serge Naudet
Gérard Receveur
Roger Clayton Walker
Yann Joel Marie Rigaud
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
General Electric Co
Original Assignee
Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
SNECMA SAS
General Electric Co
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Publication date
Application filed by Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA, SNECMA SAS, General Electric Co filed Critical Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
Publication of EP0589736A1 publication Critical patent/EP0589736A1/en
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Publication of EP0589736B1 publication Critical patent/EP0589736B1/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
    • 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
    • F01D25/26—Double casings; Measures against temperature strain in casings
    • 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 a turbomachine equipped with a device preventing the longitudinal or axial circulation of gas around the stages of vanes for straightening the flow in the machine.
  • the stator of many turbomachinery consists of a double envelope: an outer casing which surrounds a ferrule formed of elements assembled together and to which the blades of the rectifier stages are fixed.
  • the ferrule elements are screwed to the casing and provided with circular ribs of radial extension which maintain the spacing between the ferrule and the casing to which they touch by their end edge.
  • these ribs are responsible for a significant loss of heat to the outside due to their good thermal conductivity, they are perforated so as to only touch the casing by portions of circumference.
  • the invention represents a possible and particularly simple solution for this. It relates to a turbomachine comprising a casing surrounding ferrule elements to which blades of rectifier stages are fixed, the ferrule elements being connected to the casing by bolts, characterized in that the ferrule elements are provided with ribs which separate them from the casing and extend to the casing, the ribs being provided with days so as to touch the casing only by portions of circumference, and in that it comprises annular sealing parts composed of a circular sole and of a leg extending substantially radially inward from the sole to a bearing surface extending in a radial plane of an associated rib, the leg covering the days of the rib and rubbing on the bearing surface, the casing being provided for each sealing part with a step delimited by a radial compression surface of the sole and a longitudinal compression surface of the melle against the associated rib, and the bolts extend with a longitudinal inclination capable of causing
  • the outer casing is a slightly conical envelope designated by 1 in FIG. 1 and which can be formed from parts assembled together.
  • the casing 1 surrounds ferrule elements 2, which are also substantially conical, placed end to end and assembled by interlocking seals 3 to form a single continuous ferrule and approximately parallel to the casing 1.
  • Each ferrule element 2 carries a stationary stator or stator vane stage 4.
  • a stage of movable rotor blades 5 extends between each pair of stages of fixed blades 4.
  • Each ferrule element 2 is provided with a rib 6 which extends from it outwards in a radial direction to touch the casing 1 by its outer edge 7. At each rib 6 is joined a sealing piece 8 characteristic of the invention and which will be described later.
  • Each rib 6 is finally provided with a circular outer sole 9 and completed from place to place by a block 10 which then faces another block 11 corresponding to a bulge of the casing 1 outwards.
  • the blocks 10 and 11 are crossed by holes which come in extension and which a bolt 12 occupies.
  • the assemblies constituted by the shell elements 2, the ribs 6 and the flanges 9 are then securely fixed to the casing 1.
  • the ribs 6 divide the volume between the casing 1 and the shell 2 into compartments into each of which opens a gas supply device. for adjusting the clearances between the ferrule portion 2 and the stages of movable blades 5 associated with these portions. These devices are not part of the invention.
  • each rib 6 is perforated over a large part of its length, and the edge 7 is formed of interrupted fragments. Days 14 (better visible in FIG. 3) extend over most of the height of the ribs 6 and up to the casing 1 in the radial direction so that the ribs 6 only touch the casing 1 by fairly large portions. tall and narrow which greatly limit the heat transmitted.
  • the ribs 6 are provided near the ferrule elements 2 with a bearing surface 15 situated in a radial plane and oriented towards the sealing part 8, and the flanges 9 comprise another bearing surface 16 belonging to the same plane.
  • the casing 1 is designed with a circular surface 17 on which the sole 9 rests in a radial direction and another sole 18 which forms the sealing part 8 with a leg 19, and with a compression surface 20 which extends in a transverse plane and serves to compress the sole 18 against the bearing surface 16; the two surfaces 17 and 20 form a step in the casing 1.
  • the sealing parts 8 are rings without interruptions on the circumference.
  • the legs 19 are composed of an upper part 21 which extends from the sole 18 radially, but with a longitudinal inclination towards the associated rib 6, and of a purely radial end portion 22 which terminates the upper part 21 and has a bearing surface 23 which is intended to be pressed against the bearing surface 15 of the rib 6.
  • the portion end 22 protrudes at least partially from the sole 18 in the longitudinal direction when the sealing part 8 is disassembled, which is shown by the dashes.
  • the tightening of the bolts 12 causes both a longitudinal displacement of the sealing part 8 towards the rib 6, which results in an elastic bending of the leg 19 when the surfaces 15 and 23 come to touch and to rub against each other, and a radial displacement by virtue of the contraction exerted on the sole 18 by the surface 17.
  • the surfaces 15, 17 and 20, as well as the surfaces of the sealing part 8 which rest on them, are of low roughness to prevent any significant passage of gas between the compartments: they can for example be rotated.
  • the axis X of the bolts 12 has an inclination, counted from the radial direction in a longitudinal plane, which can be approximately 40 or 50 ° depending on whether one seeks to promote axial or radial compression, which is a particular question to each achievement. It is also possible to choose another inclination.
  • the mounting of the sealing parts 8 does not raise any particular difficulties because they can be introduced through the enlarged mouth of the conical casing 1.
  • the shell elements 2 are then mounted and bolted.

Abstract

Turbomachine arrangement in which care is taken to compartmentalise, in leaktight fashion, a gap between an outer casing (1) and a shell (2) resting on the casing (1) via ribs (6) with openings (14). The device essentially comprises a sealing component (8) covering the openings and arranged so as to be compressed radially against the casing (1) and longitudinally against the associated rib (6). The casing (1) and the ribs (6) are joined together by bolts (12) of which the axis (X) is inclined in order to carry out these two compressions simultaneously. <IMAGE>

Description

L'invention se rapporte à une turbomachine équipée d'un dispositif empêchant la circulation longitudinale ou axiale de gaz autour des étages d'aubes de redressement de l'écoulement dans la machine.The invention relates to a turbomachine equipped with a device preventing the longitudinal or axial circulation of gas around the stages of vanes for straightening the flow in the machine.

Le stator de nombreuses turbomachines est constitué d'une double enveloppe : un carter extérieur qui entoure une virole formée d'éléments assemblés entre eux et auxquels les aubes des étages redresseurs sont fixées. Les éléments de virole sont vissés au carter et munis de nervures circulaires d'extension radiale qui maintiennent l'écartement entre la virole et le carter auquel elles touchent par leur arête d'extrémité. Comme toutefois ces nervures sont responsables d'une importante déperdition de chaleur vers l'extérieur à cause de leur bonne conductivité thermique, elles sont ajourées de manière à ne toucher au carter que par des portions de circonférence. L'inconvénient de cette disposition, par laquelle le volume entre la virole et le carter extérieur devient d'un seul tenant, est qu'il devient impossible de régler finement les jeux entre les aubes mobiles et chaque élément de virole en insufflant du gaz de chauffage ou de refroidissement à des températures ou des débits différents dans divers compartiments du volume entre carter et virole, afin de modifier séparément la dilatation thermique de chaque élément de cette dernière : on est réduit à un réglage d'ensemble qui n'offre pas de loin la même précision pour réduire les jeux à un minimum, de sorte que le rendement de la machine est affecté.The stator of many turbomachinery consists of a double envelope: an outer casing which surrounds a ferrule formed of elements assembled together and to which the blades of the rectifier stages are fixed. The ferrule elements are screwed to the casing and provided with circular ribs of radial extension which maintain the spacing between the ferrule and the casing to which they touch by their end edge. However, since these ribs are responsible for a significant loss of heat to the outside due to their good thermal conductivity, they are perforated so as to only touch the casing by portions of circumference. The disadvantage of this arrangement, whereby the volume between the ferrule and the outer casing becomes one piece, is that it becomes impossible to finely adjust the clearances between the movable blades and each ferrule element by blowing gas from heating or cooling at different temperatures or flow rates in various compartments of the volume between casing and ferrule, in order to modify the thermal expansion of each element of the latter separately: we are reduced to an overall setting which does not offer the same precision by far to reduce the clearances to a minimum, so that the performance of the machine is affected.

Le rétablissement de l'étanchéité à chaque nervure est donc souhaité. L'invention représente une solution possible et particulièrement simple pour cela. Elle concerne une turbomachine comprenant un carter entourant des éléments de virole auxquels des aubes d'étages redresseurs sont fixées, les éléments de virole étant reliés au carter par des boulons, caractérisée en ce que les éléments de virole sont munis de nervures qui les séparent du carter et s'étendent jusqu'au carter, les nervures étant munies de jours de manière à ne toucher au carter que par des portions de circonférence, et en ce qu'elle comprend des pièces annulaires d'étanchéité composées d'une semelle circulaire et d'un jambage s'étendant sensiblement radialement vers l'intérieur à partir de la semelle jusqu'à une surface d'appui s'étendant dans un plan radial d'une nervure associée, le jambage couvrant les jours de la nervure et frottant sur la surface d'appui, le carter étant muni pour chaque pièce d'étanchéité d'un redan délimité par une surface de compression radiale de la semelle et une surface de compression longitudinale de la semelle contre la nervure associée, et les boulons s'étendent avec une inclinaison longitudinale apte à provoquer à la fois les deux compressions. L'art antérieur décrit d'autres agencements envisageables, par exemple dans les brevets français 2 468 738, 2 482 661 et 2 575 221 et dans le brevet américain 4 314 793, mais qui sont différents et souvent sensiblement plus compliqués.The reestablishment of the seal at each rib is therefore desired. The invention represents a possible and particularly simple solution for this. It relates to a turbomachine comprising a casing surrounding ferrule elements to which blades of rectifier stages are fixed, the ferrule elements being connected to the casing by bolts, characterized in that the ferrule elements are provided with ribs which separate them from the casing and extend to the casing, the ribs being provided with days so as to touch the casing only by portions of circumference, and in that it comprises annular sealing parts composed of a circular sole and of a leg extending substantially radially inward from the sole to a bearing surface extending in a radial plane of an associated rib, the leg covering the days of the rib and rubbing on the bearing surface, the casing being provided for each sealing part with a step delimited by a radial compression surface of the sole and a longitudinal compression surface of the melle against the associated rib, and the bolts extend with a longitudinal inclination capable of causing both compressions. The prior art describes other possible arrangements, for example in French patents 2,468,738, 2,482,661 and 2,575,221 and in American patent 4,314,793, but which are different and often significantly more complicated.

On va maintenant décrire l'invention plus en détail à l'aide des figures suivantes annexées à titre illustratif et non limitatif :

  • la figure 1 représente un compresseur équipé de l'invention,
  • la figure 2 représente un agrandissement de la figure 1 qui montre plus particulièrement l'agencement conforme à l'invention,
  • et la figure 3 est une vue axiale des éléments composant la figure 2.
The invention will now be described in more detail with the aid of the following figures, which are given by way of illustration and not limitation:
  • FIG. 1 represents a compressor equipped with the invention,
  • FIG. 2 represents an enlargement of FIG. 1 which shows more particularly the arrangement in accordance with the invention,
  • and FIG. 3 is an axial view of the elements making up FIG. 2.

Le carter extérieur est une enveloppe légèrement conique désignée par 1 sur la figure 1 et qui peut être formée de parties assemblées entre elles. Le carter 1 entoure des éléments de virole 2, qui sont également sensiblement coniques, mis bout à bout et assemblés par des joints à emboîtement 3 pour former une seule virole continue et à peu près parallèle au carter 1. Chaque élément de virole 2 porte un étage d'aubes fixes 4 de stator ou de redressement. Un étage d'aubes mobiles 5 de rotor s'étend entre chaque paire d'étages d'aubes fixes 4.The outer casing is a slightly conical envelope designated by 1 in FIG. 1 and which can be formed from parts assembled together. The casing 1 surrounds ferrule elements 2, which are also substantially conical, placed end to end and assembled by interlocking seals 3 to form a single continuous ferrule and approximately parallel to the casing 1. Each ferrule element 2 carries a stationary stator or stator vane stage 4. A stage of movable rotor blades 5 extends between each pair of stages of fixed blades 4.

Chaque élément de virole 2 est muni d'une nervure 6 qui s'étend à partir de lui vers l'extérieur en direction radiale pour toucher au carter 1 par son arête extérieure 7. A chaque nervure 6 est accolée une pièce d'étanchéité 8 caractéristique de l'invention et qui sera décrite plus loin. Chaque nervure 6 est enfin munie d'une semelle 9 externe circulaire et completée de place en place par un bloc 10 qui fait alors face à un autre bloc 11 correspondant à un renflement du carter 1 vers l'extérieur. Les blocs 10 et 11 sont traversés par des perçages qui viennent en prolongement et qu'un boulon 12 occupe. Les ensembles constitués par les éléments de virole 2, les nervures 6 et les semelles 9 sont alors solidement fixés au carter 1.Each ferrule element 2 is provided with a rib 6 which extends from it outwards in a radial direction to touch the casing 1 by its outer edge 7. At each rib 6 is joined a sealing piece 8 characteristic of the invention and which will be described later. Each rib 6 is finally provided with a circular outer sole 9 and completed from place to place by a block 10 which then faces another block 11 corresponding to a bulge of the casing 1 outwards. The blocks 10 and 11 are crossed by holes which come in extension and which a bolt 12 occupies. The assemblies constituted by the shell elements 2, the ribs 6 and the flanges 9 are then securely fixed to the casing 1.

Les nervures 6 divisent le volume entre le carter 1 et la virole 2 en compartiments dans chacun desquels débouche un dispositif d'alimentation en gaz de réglage des jeux entre la portion de virole 2 et les étages d'aubes mobiles 5 associés à ces portions. Ces dispositifs ne font pas partie de l'invention. On se borne à représenter et à désigner par la référence 13 les orifices à travers le carter 1 qui débouchent chacun dans un compartiment respectif. Mais chaque nervure 6 est ajourée sur une grande partie de sa longueur, et l'arête 7 est formée de fragments interrompus. Les jours 14 (mieux visibles sur la figure 3) s'étendent sur l'essentiel de la hauteur des nervures 6 et jusqu'au carter 1 dans le sens radial de sorte que les nervures 6 ne touchent au carter 1 que par des portions assez hautes et étroites qui limitent beaucoup la chaleur transmise. Comme on le voit sur la figure 2, les nervures 6 sont munies près des éléments de virole 2 d'une surface d'appui 15 située dans un plan radial et orientée vers la pièce d'étancheité 8, et les semelles 9 comprennent une autre surface d'appui 16 appartenant au même plan. Le carter 1 est conçu avec une surface circulaire 17 sur laquelle s'appuient, dans le sens radial, la semelle 9 et une autre semelle 18 qui compose la pièce d'étanchéité 8 avec un jambage 19, et d'une surface de compression 20 qui s'étend dans un plan transversal et sert à comprimer la semelle 18 contre la surface d'appui 16 ; les deux surfaces 17 et 20 forment un redan dans le carter 1.The ribs 6 divide the volume between the casing 1 and the shell 2 into compartments into each of which opens a gas supply device. for adjusting the clearances between the ferrule portion 2 and the stages of movable blades 5 associated with these portions. These devices are not part of the invention. We limit ourselves to representing and designating by the reference 13 the orifices through the casing 1 which each open into a respective compartment. But each rib 6 is perforated over a large part of its length, and the edge 7 is formed of interrupted fragments. Days 14 (better visible in FIG. 3) extend over most of the height of the ribs 6 and up to the casing 1 in the radial direction so that the ribs 6 only touch the casing 1 by fairly large portions. tall and narrow which greatly limit the heat transmitted. As can be seen in FIG. 2, the ribs 6 are provided near the ferrule elements 2 with a bearing surface 15 situated in a radial plane and oriented towards the sealing part 8, and the flanges 9 comprise another bearing surface 16 belonging to the same plane. The casing 1 is designed with a circular surface 17 on which the sole 9 rests in a radial direction and another sole 18 which forms the sealing part 8 with a leg 19, and with a compression surface 20 which extends in a transverse plane and serves to compress the sole 18 against the bearing surface 16; the two surfaces 17 and 20 form a step in the casing 1.

Les pièces d'étanchéité 8 sont des anneaux sans interruptions sur la circonférence. Les jambages 19 sont composés d'une partie supérieure 21 qui s'étend à partir de la semelle 18 radialement, mais avec une inclinaison longitudinale vers la nervure 6 associée, et d'une portion d'extrémité 22 purement radiale qui termine la partie supérieure 21 et comporte une surface d'appui 23 qui est destinée à être pressée contre la surface d'appui 15 de la nervure 6. La portion d'extrémité 22 dépasse au moins partiellement de la semelle 18 dans le sens longitudinal quand la pièce d'étanchéité 8 est démontée, ce qu'on a figuré par les tirets. Quand le montage est entrepris, le serrage des boulons 12 provoque à la fois un déplacement longitudinal de la pièce d'étanchéité 8 vers la nervure 6, qui se traduit par un fléchissement élastique du jambage 19 quand les surfaces 15 et 23 viennent à se toucher et à frotter l'une contre l'autre, et un déplacement radial grace à la contraction exercée sur la semelle 18 par la surface 17. On en arrive à une situation où la pièce d'étanchéité 8 est fermement appuyée contre les surfaces 15 et 16 de la nervure 6 et contre les surfaces 17 et 20 du carter 1. Les surfaces 15, 17 et 20, de même que les surfaces de la pièce d'étanchéité 8 qui s'appuient sur elles, sont de faible rugosité pour interdire tout passage significatif de gaz entre les compartiments : elles peuvent par exemple être tournées.The sealing parts 8 are rings without interruptions on the circumference. The legs 19 are composed of an upper part 21 which extends from the sole 18 radially, but with a longitudinal inclination towards the associated rib 6, and of a purely radial end portion 22 which terminates the upper part 21 and has a bearing surface 23 which is intended to be pressed against the bearing surface 15 of the rib 6. The portion end 22 protrudes at least partially from the sole 18 in the longitudinal direction when the sealing part 8 is disassembled, which is shown by the dashes. When the assembly is undertaken, the tightening of the bolts 12 causes both a longitudinal displacement of the sealing part 8 towards the rib 6, which results in an elastic bending of the leg 19 when the surfaces 15 and 23 come to touch and to rub against each other, and a radial displacement by virtue of the contraction exerted on the sole 18 by the surface 17. This leads to a situation where the sealing part 8 is firmly pressed against the surfaces 15 and 16 of the rib 6 and against the surfaces 17 and 20 of the casing 1. The surfaces 15, 17 and 20, as well as the surfaces of the sealing part 8 which rest on them, are of low roughness to prevent any significant passage of gas between the compartments: they can for example be rotated.

L'axe X des boulons 12 a une inclinaison, comptée de la direction radiale dans un plan longitudinal, qui peut être de 40 ou 50° environ selon qu'on cherche à favoriser la compression axiale ou radiale, ce qui est une question particulière à chaque réalisation. Il est d'ailleurs possible de choisir une autre inclinaison.The axis X of the bolts 12 has an inclination, counted from the radial direction in a longitudinal plane, which can be approximately 40 or 50 ° depending on whether one seeks to promote axial or radial compression, which is a particular question to each achievement. It is also possible to choose another inclination.

Le montage des pièces d'étanchéité 8 ne soulève pas de difficultés particulières car elles peuvent être introduites par l'embouchure élargie du carter 1 conique. Les éléments de virole 2 sont ensuite montés et boulonnés.The mounting of the sealing parts 8 does not raise any particular difficulties because they can be introduced through the enlarged mouth of the conical casing 1. The shell elements 2 are then mounted and bolted.

Claims (3)

Turbomachine comprenant un carter (1) entourant des éléments de virole (2) auxquels des aubes (4) d'étages redresseurs sont fixées, les éléments de virole étant reliés au carter par des boulons (12), caractérisée en ce que les élements de virole sont munis de nervures (6) qui les séparent du carter et s'étendent jusqu'au carter, les nervures étant munies de jours (14) de manière à ne toucher au carter que par des portions de circonférence, et en ce qu'elle comprend des pièces annulaires d'étanchéité (8) composées d'une semelle circulaire (18) et d'un jambage (19) s'étendant sensiblement radialement vers l'intérieur à partir de la semelle jusqu'à une surface d'appui (15) s'étendant dans un plan radial d'une nervure associée, le jambage couvrant les jours de la nervure et frottant sur la surface d'appui (15), le carter étant muni pour chaque pièce d'étanchéité d'un redan délimité par une surface de compression radiale (17) de la semelle (18) et une surface de compression longitudinale (20) de la semelle contre la nervure associée, et les boulons (12) s'étendent avec une inclinaison longitudinale apte à provoquer à la fois les deux compressions.Turbomachine comprising a casing (1) surrounding ferrule elements (2) to which blades (4) of rectifier stages are fixed, the ferrule elements being connected to the casing by bolts (12), characterized in that the elements of ferrule are provided with ribs (6) which separate them from the casing and extend to the casing, the ribs being provided with days (14) so as to touch the casing only by portions of circumference, and in that it comprises annular sealing parts (8) composed of a circular sole (18) and a leg (19) extending substantially radially inward from the sole to a bearing surface (15) extending in a radial plane of an associated rib, the leg covering the days of the rib and rubbing against the bearing surface (15), the casing being provided for each sealing part with a step delimited by a radial compression surface (17) of the sole (18) and a surface ace of longitudinal compression (20) of the sole against the associated rib, and the bolts (12) extend with a longitudinal inclination capable of causing both compressions. Turbomachine suivant la revendication 1, caractérisée en ce que l'inclinaison des vis est de 40° à 500 par rapport à la direction radiale.Turbomachine according to claim 1, characterized in that the inclination of the screws is from 40 ° to 500 relative to the radial direction. Turbomachine suivant l'une quelconque des revendications 1 ou 2, caractérisée en ce que le jambage présente une surface (23), s'étendant dans un plan radial, qui est destinée à être pressée sur la surface d'appui, ladite surface du jambage dépassant de la semelle suivant la direction longitudinale quand la pièce d'étanchéité (8) est démontée.Turbomachine according to any one of claims 1 or 2, characterized in that the leg has a surface (23), extending in a radial plane, which is intended to be pressed on the bearing surface, said surface of the leg protruding from the sole in the longitudinal direction when the sealing part (8) is removed.
EP93402092A 1992-08-26 1993-08-25 Turbomachine with a device for stopping axial gas flows at the periphery of stator stages Expired - Lifetime EP0589736B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9210278 1992-08-26
FR9210278A FR2695164B1 (en) 1992-08-26 1992-08-26 Turbomachine provided with a device preventing a longitudinal circulation of gas around the stages of straightening vanes.

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EP0589736A1 true EP0589736A1 (en) 1994-03-30
EP0589736B1 EP0589736B1 (en) 1996-04-03

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EP (1) EP0589736B1 (en)
DE (1) DE69302065T2 (en)
FR (1) FR2695164B1 (en)

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FR2817285B1 (en) 2000-11-30 2003-06-13 Snecma Moteurs STATOR INTERNAL OIL
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FR2868125B1 (en) * 2004-03-26 2006-07-21 Snecma Moteurs Sa TURBOMACHINE COMPRISING TWO SUBASSEMBLIES ASSEMBLED WITH AXIAL CONSTRAINTS
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US5320484A (en) 1994-06-14
DE69302065D1 (en) 1996-05-09
EP0589736B1 (en) 1996-04-03
FR2695164B1 (en) 1994-11-04
FR2695164A1 (en) 1994-03-04
DE69302065T2 (en) 1996-09-12

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