EP0081436A1 - Compressor or turbine rotor, the wheel of which supports the hammer-type foot blades and method of assembling such a rotor - Google Patents

Compressor or turbine rotor, the wheel of which supports the hammer-type foot blades and method of assembling such a rotor Download PDF

Info

Publication number
EP0081436A1
EP0081436A1 EP82402242A EP82402242A EP0081436A1 EP 0081436 A1 EP0081436 A1 EP 0081436A1 EP 82402242 A EP82402242 A EP 82402242A EP 82402242 A EP82402242 A EP 82402242A EP 0081436 A1 EP0081436 A1 EP 0081436A1
Authority
EP
European Patent Office
Prior art keywords
blades
blade
stop
platform
sector
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
EP82402242A
Other languages
German (de)
French (fr)
Other versions
EP0081436B1 (en
Inventor
Gérard Marcel François Mandet
Marc Roger Marchi
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
Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
SNECMA SAS
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 Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA, SNECMA SAS filed Critical Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
Publication of EP0081436A1 publication Critical patent/EP0081436A1/en
Application granted granted Critical
Publication of EP0081436B1 publication Critical patent/EP0081436B1/en
Expired legal-status Critical Current

Links

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
    • F01D5/32—Locking, e.g. by final locking blades or keys
    • 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
    • F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
    • F01D5/303—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot
    • F01D5/3038—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot the slot having inwardly directed abutment faces on both sides
    • 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
    • F05D2250/20—Three-dimensional
    • F05D2250/23—Three-dimensional prismatic

Definitions

  • the invention relates to a device for mounting and fixing blades with a hammer foot in a compressor and turbine rotor and a method for mounting said blades in the rotor disc.
  • a disc intended to be fitted with hammer-foot blades carries in its rim a circumferential groove in which the feet are introduced and then retained.
  • the groove provided in the disc has, from the outside towards the center of the disc, two peripheral edges separated by a distance equal to the length of the platform and between which it fits when the blade is in place, a narrow part corresponding to the length of the stilt, and finally a part of width greater than the length of the blade root and of greater height to that separating the lower part of the blade root from the upper part of the platform.
  • An insertion window is provided in the groove and is obtained by removing the narrow part over a length equal to the width of the platform.
  • the vane with a hammer foot cooperating with the groove has a platform surmounting by overflowing a stilt of parallelepiped shape and one foot protruding from the ends of the stilt.
  • the assembly process consists in introducing the blades into the groove according to the smallest dimension of the base, then bringing the blade back into the window and, after having made it undergo a rotation of 90 °, to pull it outwards, so as to bring the foot into abutment against the upper part of the window; the blade is then slid circumferentially, the platform being received between the peripheral edges of the groove. The same operation is repeated for each dawn.
  • the last blade or blocking blade has at least one edge of its platform removed and replaced by a tongue fixed in slots machined in the stilt.
  • the blocking vane is raised between the vanes placed on either side of the window and is held therebetween by the folded tab.
  • the device comprises a mounting sector formed by the removal of two circumferential flanges provided on the edges of the rim, said sector having a length approximately equal to three blade platform widths, a stop blade having two diametrically opposite cut corners and a stop means comprising at least two teeth, the widths are equal to the distance between the stilts of two neighboring blades, and shaped so that it can be placed between the bottom of the mounting sector and the underside of the platforms of three adjacent blades, including the stop blade, occupying the mounting sector.
  • FIG. 1 shows in perspective a portion of the rotor and of the turbine or compressor blade comprising arrangements in accordance with the invention.
  • the rotor 1 carries in its radial plane a circumferential groove 2 in which the feet 12 of the blades are conventionally held.
  • the rim of the rotor has two flanges 4, 5 having inwardly a recess 6, 7.
  • the faces of the recesses parallel to the surface of the rim possibly have circumferential grooves. 8, 9 whose function will be specified later.
  • the blade 10 consists of a blade mounted on an approximately rectangular platform 11, which is extended by a cylindrical stilt 13 at the end of which is fixed, according to the longitudinal plane of symmetry of the platform, a foot 12 capable of cooperate with the groove.
  • the upstream and downstream edges of the platform have on their lower face recesses 14, 15 capable of cooperating with the recesses 6, 7 of the flanges 4, 5 of the rim ( Figure 4) when the blade is oriented in its final position.
  • the cylindrical stilt 13 and the smallest dimension of the hammer foot 12 are provided so as to allow their introduction into the opening 16 of constant width of the groove 2.
  • the blades are then pulled radially and moved circumferentially so as to place their platforms on the rims of the rim.
  • the mounting sector 17 is filled with blades.
  • the length of the sector corresponds at least to the width of the three blade platforms 18, 19, 20.
  • the blades 18 and 19 can be identical to the blades already in place, with the exception of a half-hole, formed on the edge of the platform, the usefulness of which we will see later.
  • the stop blade 20 (FIG. 3) it can have, especially in the case where the cord from the blade to the root extends over the entire length of the diagonal of the platform, a platform of which the two diagonal corners are cut.
  • the distance separating the cut corners 21, 22 is less than the shortest distance separating the blades of the blades 18 and 19 oriented and maintained in the final position.
  • the blade being directed approximately along a diagonal of the platform, the cut corners are preferably provided along the other diagonal.
  • a stop comb 23 is provided. ( Figure 5) whose width is equal to the length of the platforms or the width of the rim. It has four teeth 24, 25, 26, 27, the widths of which are equal to the distance between the stilts of two neighboring blades, the gap between teeth being equal to the diameter of the stilts.
  • the bottom of the notches between the teeth comprises, on the upper face of the comb, a milling 38 to allow adaptation to the connecting leave between platform and stilt of the blade.
  • the comb is placed between the platform and the rotor rim in the rim sector 17.
  • the thickness of the comb is such that it occupies the space limited by the lower face of the platforms and the upper face of the rim forming the bottom of the sector 17.
  • Two threaded holes 28, 29 provided in two of the teeth receive means for fixing such as screws 30 and 31 shown in Figure 2. These screws are held in corresponding half-holes 34, 35 and 36, 37 made on the edges opposite the adjacent blades.
  • a double bore which allows the cylindrical head of the screws to be housed in the half-platforms without protruding from their surface.
  • the device for mounting and fixing hammer-foot blades therefore consists of a sector, formed by the removal of the edges of the rotor rim extending over a length of at least three blades, of a blade d 'platform stop with diagonal cut corners and a stop comb.
  • FIGS. 7 and 8 is illustrated a variant of the stop means making it possible to maintain the platforms of the blades 18, 19, 20 at the same level as those of the other blades housed in the circumferential groove.
  • the stop means here consists of two plates 39, 40 having a T-shaped contour, mounted on either side of the circumferential groove in the sector 17.
  • the vertical bar of each T forms a tooth, such that 41 and 42, the width of which is equal to the distance between the stilts of two neighboring blades.
  • the thickness of these plates is such that it occupies the space limited by the underside of the platforms and the upper surface of the rim forming the bottom of the sector 17.
  • Each tooth 41, 42 has a threaded hole, respectively 28 ', 29' receiving screws 30, 31 held in half-holes 34 ', 35' and 36 ', 37' of the lateral edges of two contiguous platforms, respectively 19, 20 and 20, 18.
  • each tooth is provided to abut on the circumferential edge of the plate engaged on the other side of the groove.
  • a chamfer 43 on the edge of the contour of the plate to allow adaptation to the connecting leaves between platform and stilt of the blade.
  • An improvement aimed at perfecting the continuity of the vein at the location of the cut sides of the stop platform 20 can be the subject of two variants.
  • the plates 39 and 40 have a protruding corner, 48, 49 respectively, which is housed in the space left free, respectively between the cutaway 22 and the edge of the adjoining blade 19 and between the cutaway 21 and the edge of the adjoining blade 18.
  • FIG. 9 Another variant illustrated in FIG. 9 can be used both with the stop comb illustrated in FIGS. 5 and 6 as with the stop means illustrated in FIGS. 7 and 8 (but private of course in this case with projecting corners 48 , 49).
  • the contour of the blades 18 and 19 framing the dawn stop 20 has a triangular beak, respectively 50, 51 which fits into the corner left empty by the cutaway respectively 22, 21 of the stop vane 20.
  • the method of mounting the blades on the rotor comprises the introduction of the blade roots into the circumferential groove of the rim in the region of the mounting sector, the root of a blade being introduced into the groove longitudinally, then rotated by an angle of 90 ° to bring the blade to its final position and place the foot transversely in the groove.
  • the blade is pulled radially, then slid circumferentially to bring the platform to the flanges 4, 5 of the rim, the recesses 14 and 15 of the platform 11 cooperating with the recesses 6 and 7 of the flanges, possibly with the interposition of a seal placed in grooves 8 and 9 to ensure sealing.
  • the introduction of the foot of the stop blade 20 is made possible by the cut corners of the platform.
  • the blade being pulled radially, the platform can pass over the platforms of the blades 18 and 19 and rotate between their blades without being hindered by them and take its place between the platforms of the two adjacent blades.
  • the Figure 3 shows in broken lines an intermediate position of the stop vane 20 during its establishment by rotation.
  • the circumferential groove retaining the blade roots maintains a constant width throughout the rim.
  • the dimension of the narrow part 16 of the groove remains constant.
  • the mounting sector, formed by removing the rims from the rim, has no effect on the mechanical strength of the circumferential groove and the blade disc.
  • the device for mounting and fixing blades, object of the invention eliminates a cause of fatigue of the turbine or compressor rotor without requiring an increase in weight or difficulty in machining.

Abstract

Le dispositif comporte un secteur de montage (17) formé par la suppression de deux rebords (4, 5) circonférentiels prévus sur les bords de la jante, la longueur du secteur est d'environ trois largeurs de plateforme d'aube, une aube d'arrèt (20) presentant deux coins coupés (21,22) diamétralement opposés, un peigne d'arrêt (23) à quatre dents. Le procédé de montage consiste à faire tourner l'aube d'arrêt (20) entre les aubes (18 19) placées dans le fond du secteur, en faisant passer sa plateforme au-dessus de celles des deux aubes adjacentes. Le peigne est introduit entre les plateformes des trois aubes (18, 19, 20) et le fond du secteur (17). L'ensemble est fixé par des moyens de fixation (30, 31).The device comprises a mounting sector (17) formed by the removal of two circumferential flanges (4, 5) provided on the edges of the rim, the length of the sector is approximately three blade platform widths, one blade d 'stop (20) having two cut corners (21,22) diametrically opposite, a stop comb (23) with four teeth. The mounting method consists in rotating the stop blade (20) between the blades (18 19) placed in the bottom of the sector, by passing its platform over those of the two adjacent blades. The comb is introduced between the platforms of the three blades (18, 19, 20) and the bottom of the sector (17). The assembly is fixed by fixing means (30, 31).

Description

L'invention concerne un dispositif de montage et de fixation d'aubes à pied marteau dans un rotor de compresseur et de turbine et un procédé de montage desdites aubes dans le disque de rotor.The invention relates to a device for mounting and fixing blades with a hammer foot in a compressor and turbine rotor and a method for mounting said blades in the rotor disc.

L'utilisation d'aubes à pied marteau dans les rotors de compresseur et de turbine permet de simplifier les dispositifs de verrouillage puisque la fixation des aubes est obtenue par un seul dispositif placé en dernier lieu entre deux aubes voisines.The use of hammer foot vanes in the compressor and turbine rotors makes it possible to simplify the locking devices since the fixing of the vanes is obtained by a single device placed lastly between two neighboring vanes.

Un disque destiné à être équipé d'aubes à pied marteau porte dans sa jante une rainure circonférentielle dans laquelle sont introduits, puis retenus, les pieds.A disc intended to be fitted with hammer-foot blades carries in its rim a circumferential groove in which the feet are introduced and then retained.

Un tel dispositif est décrit, par exemple, dans le brevet français n° 1 112 826. La rainure prévue dans le disque, présente, de l'extérieur vers le centre du disque, deux rebords périphériques séparés par une distance égale à la longueur de la plateforme et entre lesquels celle-ci s'emboîte lorsque l'aube est en place, une partie étroite correspondant à la longueur de l'échasse, et enfin une partie de largeur supérieure à la longueur du pied d'aube et de hauteur supérieure à celle séparant la partie inférieure du pied d'aube de la partie supérieure de la plateforme. Une fenêtre d'introduction est prévue dans la rainure et est obtenue par suppression de la partie étroite sur une longueur égale à la largeur de la plateforme.Such a device is described, for example, in French patent No. 1,112,826. The groove provided in the disc has, from the outside towards the center of the disc, two peripheral edges separated by a distance equal to the length of the platform and between which it fits when the blade is in place, a narrow part corresponding to the length of the stilt, and finally a part of width greater than the length of the blade root and of greater height to that separating the lower part of the blade root from the upper part of the platform. An insertion window is provided in the groove and is obtained by removing the narrow part over a length equal to the width of the platform.

L'aube à pied marteau coopérant avec la rainure présente une plateforme surmontant en la débordant une échasse de forme parallélépipédique et un pied dépassant des extrémités de l'échasse.The vane with a hammer foot cooperating with the groove has a platform surmounting by overflowing a stilt of parallelepiped shape and one foot protruding from the ends of the stilt.

Le procédé de montage consiste à introduire les aubes dans la rainure selon la plus petite dimension du pied, puis à ramener l'aube dans la fenêtre et, après lui avoir fait subir une rotation de 90°, de la tirer vers l'extérieur, de manière à amener le pied en butée contre la partie supérieure de la fenêtre ; on glisse alors l'aube circonférentiellement, la plateforme venant se loger entre les rebords périphériques de la rainure. La même opération est répétée pour chaque aube.The assembly process consists in introducing the blades into the groove according to the smallest dimension of the base, then bringing the blade back into the window and, after having made it undergo a rotation of 90 °, to pull it outwards, so as to bring the foot into abutment against the upper part of the window; the blade is then slid circumferentially, the platform being received between the peripheral edges of the groove. The same operation is repeated for each dawn.

La dernière aube ou aube de blocage a au moins un bord de sa plateforme supprimé et remplacé par une languette fixée dans des fentes usinées dans l'échasse. L'aube de blocage est remontée entre les aubes placées de part et-d'autre de la fenêtre et est maintenue entre celles-ci par la languette rabattue.The last blade or blocking blade has at least one edge of its platform removed and replaced by a tongue fixed in slots machined in the stilt. The blocking vane is raised between the vanes placed on either side of the window and is held therebetween by the folded tab.

Ce type de dispositif généralement utilisé pour les aubes à pied marteau présente l'inconvénient d'affaiblir le disque dans la zone de la fenêtre d'introduction et a pour conséquence une mauvaise tenue à la fatigue.This type of device generally used for hammer-foot blades has the drawback of weakening the disc in the region of the insertion window and results in poor fatigue resistance.

L'invention vise à supprimer la fenêtre d'introduction par un aménagement de la jante du disque n'introduisant pas d'affaiblissement de la partie travaillante de la rainure. C'est ainsi que, selon l'invention, le dispositif comporte un secteur de montage formé par la suppression de deux rebords circonférentiels prévus sur les bords de la jante, ledit secteur ayant une longueur approximativement égale à trois largeurs de plateforme d'aube, une aube d'arrêt présentant deux coins coupés diamétralement opposés et un moyen d'arrêt comportant au moins deux dents dont les largeurs sont égales à la distance comprise entre les échasses de deux aubes voisines, et conformé de manière à pouvoir être placé entre le fond du secteur de montage et le dessous des plateformes de trois aubes adjacentes, dont l'aube d'arrêt, occupant le secteur de montage.The invention aims to eliminate the insertion window by fitting the rim of the disc without introducing any weakening of the working part of the groove. Thus, according to the invention, the device comprises a mounting sector formed by the removal of two circumferential flanges provided on the edges of the rim, said sector having a length approximately equal to three blade platform widths, a stop blade having two diametrically opposite cut corners and a stop means comprising at least two teeth, the widths are equal to the distance between the stilts of two neighboring blades, and shaped so that it can be placed between the bottom of the mounting sector and the underside of the platforms of three adjacent blades, including the stop blade, occupying the mounting sector.

Les explications et figures données ci-après à titre d'exemples permettront de comprendre comment l'invention peut être réalisée.

  • La figure 1 représente en perspective et en coupe partielle une aube logée dans un rotor selon l'invention.
  • La figure 2 est une vue en coupe radiale d'une partie de la jante du rotor.
  • La figure 3 est une vue développée, selon la coupe circulaire III-III de la figure 2.
  • La figure 4 est une vue en coupe axiale selon IV-IV de la figure 3.
  • La figure 5 est une vue en plan d'un peigne d'arrêt des aubes.
  • La figure 6 est une vue montrant le peigne d'arrêt en place entre les aubes.
  • La figure 7 est une vue en plan, éclatée, d'une variante d'un moyen d'arrêt des aubes.
  • La figure 8 est une vue en plan montrant le moyen d'arrêt de la figure 7 en place entre les aubes.
  • La figure 9 est une vue de dessus, éclatée, de l'ensemble constitué par la plateforme de l'aube d'arrêt et celles des deux aubes adjacentes, selon un perfectionnement.
The explanations and figures given below by way of examples will make it possible to understand how the invention can be implemented.
  • Figure 1 shows in perspective and in partial section a blade housed in a rotor according to the invention.
  • Figure 2 is a radial sectional view of part of the rotor rim.
  • FIG. 3 is a developed view, according to the circular section III-III of FIG. 2.
  • FIG. 4 is a view in axial section along IV-IV of FIG. 3.
  • Figure 5 is a plan view of a blade stop comb.
  • Figure 6 is a view showing the stop comb in place between the blades.
  • Figure 7 is an exploded plan view of a variant of a blade stop means.
  • Figure 8 is a plan view showing the stop means of Figure 7 in place between the blades.
  • Figure 9 is an exploded top view of the assembly formed by the platform of the stop blade and those of the two adjacent blades, according to an improvement.

La figure 1 montre en perspective une portion de rotor et d'aube de turbine ou de compresseur comportant des aménagements conformes à l'invention.FIG. 1 shows in perspective a portion of the rotor and of the turbine or compressor blade comprising arrangements in accordance with the invention.

Le rotor 1 porte dans son plan radial une rainure 2 circonférentielle dans laquelle sont maintenus classiquement les pieds 12 des aubes. La jante du rotor comporte deux rebords 4, 5 présentant vers l'intérieur un décrochement 6, 7. Les faces des décrochements parallèles à la surface de la jante portent éventuellement des gorges circonféren-. tielles 8, 9 dont la fonction sera ultérieurement précisée.The rotor 1 carries in its radial plane a circumferential groove 2 in which the feet 12 of the blades are conventionally held. The rim of the rotor has two flanges 4, 5 having inwardly a recess 6, 7. The faces of the recesses parallel to the surface of the rim possibly have circumferential grooves. 8, 9 whose function will be specified later.

L'aube 10 est constituée d'une pale montée sur une plateforme 11 approximativement rectangulaire, qui est prolongée par une échasse cylindrique 13 à l'extrémité de laquelle est fixé, selon le plan de symétrie longitudinal de la plateforme, un pied 12 susceptible de coopérer avec la rainure. Les bords amont et aval de la plateforme présentent sur leur face inférieure des décrochements 14, 15 susceptibles de coopérer avec les décrochements 6, 7 des rebords 4, 5 de la jante (figure 4) lorsque l'aube est orientée dans sa position finale.The blade 10 consists of a blade mounted on an approximately rectangular platform 11, which is extended by a cylindrical stilt 13 at the end of which is fixed, according to the longitudinal plane of symmetry of the platform, a foot 12 capable of cooperate with the groove. The upstream and downstream edges of the platform have on their lower face recesses 14, 15 capable of cooperating with the recesses 6, 7 of the flanges 4, 5 of the rim (Figure 4) when the blade is oriented in its final position.

L'échasse cylindrique 13 et la plus petite dimension du pied marteau 12 sont prévues de manière à permettre leur introduction dans l'ouverture 16 de largeur constante de la rainure 2.The cylindrical stilt 13 and the smallest dimension of the hammer foot 12 are provided so as to allow their introduction into the opening 16 of constant width of the groove 2.

Selon des caractéristiques de l'invention, on a prévu sur la jante du rotor un secteur de montage 17 sur la longueur duquel les rebords 4 et 5 sont supprimés (figure 2). Le secteur permet l'introduction des pieds d'aube et la rotation des aubes pour orienter les pales et les pieds dans leur position finale (approximativement à 90* par rapport à la position d'introduction).According to characteristics of the invention, provision has been made on the rim of the rotor a mounting sector 17 along the length of which the edges 4 and 5 are removed (Figure 2). The sector allows the introduction of the blade roots and the rotation of the blades to orient the blades and the feet in their final position (approximately 90 * relative to the insertion position).

Les aubes sont ensuite tirées radialement et déplacées circonférentiellement de manière à placer leurs plateformes sur les rebords de la jante. Lorsque toute la partie de jante portant les rebords est équipée d'aubes, on garnit le secteur de montage 17 d'aubes. La longueur du secteur correspond au moins à la largeur des trois plateformes d'aubes 18, 19, 20.The blades are then pulled radially and moved circumferentially so as to place their platforms on the rims of the rim. When the entire rim portion carrying the flanges is equipped with blades, the mounting sector 17 is filled with blades. The length of the sector corresponds at least to the width of the three blade platforms 18, 19, 20.

Les aubes 18 et 19 peuvent être identiques aux aubes déjà en place, à l'exception près d'un demi-trou, ménagé sur le bord de la plateforme, dont nous verrons l'utilité plus loin. Quant à l'aube d'arrêt 20 (figure 3), elle peut présenter, notamment dans le cas où la corde de l'aube à l'emplanture s'étend sur toute la longueur de la diagonale de la plateforme, une plateforme dont les deux coins diagonaux sont coupés. La distance séparant les coins coupés 21, 22 est inférieure à la plus courte distance séparant les pales des aubes 18 et 19 orientées et maintenues en position finale. La pale étant dirigée approximativement selon une diagonale de la plateforme, les coins coupés sont prévus de préférence selon l'autre diagonale.The blades 18 and 19 can be identical to the blades already in place, with the exception of a half-hole, formed on the edge of the platform, the usefulness of which we will see later. As for the stop blade 20 (FIG. 3), it can have, especially in the case where the cord from the blade to the root extends over the entire length of the diagonal of the platform, a platform of which the two diagonal corners are cut. The distance separating the cut corners 21, 22 is less than the shortest distance separating the blades of the blades 18 and 19 oriented and maintained in the final position. The blade being directed approximately along a diagonal of the platform, the cut corners are preferably provided along the other diagonal.

Afin de maintenir les plateformes des aubes 18, 19, 20 au même niveau que celles des aubes 32, 33 reposant sur les rebords 4, 5 et de verrouiller en position l'aube d'arrêt 20, on prévoit un peigne d'arrêt 23 (figure 5) dont la largeur est égale à la longueur des plateformes ou à la largeur de la jante. Il comporte quatre dents 24, 25, 26, 27 dont les largeurs sont égales à la distance comprise entre les échasses de deux aubes voisines, l'intervalle entre dents étant égal au diamètre des échasses. Le fond des échancrures entre les dents comporte, à la face supérieure du peigne, un fraisage 38 pour permettre l'adaptation au congé de raccordement entre plateforme et échasse de l'aube. Le peigne se place entre la plateforme et la jante du rotor dans le secteur 17 de jante. L'épaisseur du peigne est telle qu'il occupe l'espace limité par la face inférieure des plateformes et la face supérieure de la jante formant le fond du secteur 17. Deux trous filetés 28, 29 prévus dans deux des dents reçoivent des moyens de fixation tels que des vis 30 et 31 représentées sur la figure 2. Ces vis sont maintenues dans des demi-trous correspondants 34, 35 et 36, 37 pratiqués sur les bords en regard des aubes adjacentes. On a figuré, sur la figure 2 et les vues de dessus correspondantes, un double alésage qui permet à la tête cylindrique des vis de se loger dans les demi-plateformes sans faire saillie à leur surface.In order to keep the platforms of the blades 18, 19, 20 at the same level as those of the blades 32, 33 resting on the flanges 4, 5 and to lock the stop blade 20 in position, a stop comb 23 is provided. (Figure 5) whose width is equal to the length of the platforms or the width of the rim. It has four teeth 24, 25, 26, 27, the widths of which are equal to the distance between the stilts of two neighboring blades, the gap between teeth being equal to the diameter of the stilts. The bottom of the notches between the teeth comprises, on the upper face of the comb, a milling 38 to allow adaptation to the connecting leave between platform and stilt of the blade. The comb is placed between the platform and the rotor rim in the rim sector 17. The thickness of the comb is such that it occupies the space limited by the lower face of the platforms and the upper face of the rim forming the bottom of the sector 17. Two threaded holes 28, 29 provided in two of the teeth receive means for fixing such as screws 30 and 31 shown in Figure 2. These screws are held in corresponding half-holes 34, 35 and 36, 37 made on the edges opposite the adjacent blades. There is shown in Figure 2 and the corresponding top views, a double bore which allows the cylindrical head of the screws to be housed in the half-platforms without protruding from their surface.

Le dispositif de montage et de fixation d'aubes à pied marteau se compose donc d'un secteur, formé par la suppression des rebords de la jante de rotor s'étendant sur une longueur d'au moins trois aubes, d'une aube d'arrêt à plateforme à coins diagonaux coupés et d'un peigne d'arrêt.The device for mounting and fixing hammer-foot blades therefore consists of a sector, formed by the removal of the edges of the rotor rim extending over a length of at least three blades, of a blade d 'platform stop with diagonal cut corners and a stop comb.

Sur les figures 7 et 8 est illustrée une variante du moyen d'arrêt permettant de maintenir les plateformes des aubes 18, 19, 20 au même niveau que celles des autres aubes logées dans la rainure circonférentielle.In FIGS. 7 and 8 is illustrated a variant of the stop means making it possible to maintain the platforms of the blades 18, 19, 20 at the same level as those of the other blades housed in the circumferential groove.

Le moyen d'arrêt est ici constitué par deux plaquettes 39, 40 présentant un contour en forme de T, montées de part et d'autre de la rainure circonférentielle dans le secteur 17. La barre verticale de chaque T forme une dent, telle que 41 et 42, dont la largeur est égale à la distance comprise entre les échasses de deux aubes voisines. Comme dans le mode de réalisation illustré aux figures 5 et 6, l'épaisseur de ces plaquettes est telle qu'elle occupe l'espace limité par la face inférieure des plateformes et la surface supérieure de la jante formant le fond du secteur 17. Chaque dent 41, 42 comporte un trou fileté, respectivement 28', 29' recevant des vis 30, 31 maintenues dans des demi-trous 34', 35' et 36', 37' des bords latéraux de deux plateformes contigües, respectivement 19, 20 et 20, 18. La longueur de chaque dent est prévue pour venir buter sur le bord circonférentiel de la plaquette engagée de l'autre côté de la rainure. On a figuré, d'une manière analogue au mode de réalisation précédemment décrit, un chanfrein 43 sur le bord du contour de la plaquette pour permettre l'adaptation aux congés de raccordement entre plateforme et échasse de l'aube. aThe stop means here consists of two plates 39, 40 having a T-shaped contour, mounted on either side of the circumferential groove in the sector 17. The vertical bar of each T forms a tooth, such that 41 and 42, the width of which is equal to the distance between the stilts of two neighboring blades. As in the embodiment illustrated in FIGS. 5 and 6, the thickness of these plates is such that it occupies the space limited by the underside of the platforms and the upper surface of the rim forming the bottom of the sector 17. Each tooth 41, 42 has a threaded hole, respectively 28 ', 29' receiving screws 30, 31 held in half-holes 34 ', 35' and 36 ', 37' of the lateral edges of two contiguous platforms, respectively 19, 20 and 20, 18. The length of each tooth is provided to abut on the circumferential edge of the plate engaged on the other side of the groove. There has been shown, in a manner analogous to the embodiment described above, a chamfer 43 on the edge of the contour of the plate to allow adaptation to the connecting leaves between platform and stilt of the blade. at

Un perfectionnement visant à parfaire la continuité de la veine à l'endroit des pans coupés de la plateforme d'arrêt 20 peut faire l'objet de deux variantes.An improvement aimed at perfecting the continuity of the vein at the location of the cut sides of the stop platform 20 can be the subject of two variants.

Selon une première variante, mettant à profit le moyen d'arrêt illustré aux figures 7 et 8, les plaquettes 39 et 40 présentent en surépaisseur un coin en saillie, respectivement 48, 49 venant se loger dans l'espace laissé libre, respectivement entre le pan coupé 22 et le bord de l'aube contigüe 19 et entre le pan coupé 21 et le bord de l'aube contigüe 18.According to a first variant, taking advantage of the stop means illustrated in FIGS. 7 and 8, the plates 39 and 40 have a protruding corner, 48, 49 respectively, which is housed in the space left free, respectively between the cutaway 22 and the edge of the adjoining blade 19 and between the cutaway 21 and the edge of the adjoining blade 18.

Une autre variante illustrée figure 9 peut être utilisée aussi bien avec le peigne d'arrêt illustré aux figures 5 et 6 qu'avec le moyen d'arrêt illustré aux figures 7 et 8 (mais privé bien entendu dans ce cas des coins en saillie 48, 49). Le contour des aubes 18 et 19 encadrant l'aube d'arrêt 20 comporte un bec triangulaire, respectivement 50, 51 venant s'emboîter dans le coin laissé vide par le pan coupé respectivement 22, 21 de l'aube d'arrêt 20.Another variant illustrated in FIG. 9 can be used both with the stop comb illustrated in FIGS. 5 and 6 as with the stop means illustrated in FIGS. 7 and 8 (but private of course in this case with projecting corners 48 , 49). The contour of the blades 18 and 19 framing the dawn stop 20 has a triangular beak, respectively 50, 51 which fits into the corner left empty by the cutaway respectively 22, 21 of the stop vane 20.

Le procédé de montage des aubes sur le rotor, selon l'invention, comporte l'introduction des pieds d'aube dans la rainure circonférentielle de la jante dans la zone du secteur de montage, le pied d'une aube étant introduit dans la rainure longitudinalement, puis tourné d'un angle de 90° pour amener la pale dans sa position définitive et placer le pied transversalement dans la rainure. L'aube est tirée radialement, puis glissée circonférentiellement pour amener la plateforme sur les rebords 4, 5 de la jante, les décrochements 14 et 15 de la plateforme 11 coopérant avec les décrochements 6 et 7 des rebords, éventuellement avec interposition d'un joint placé dans les gorges 8 et 9 pour assurer l'étanchéité. Cette opération est répétée jusqu'à ce que la partie de jante comportant les rebords 4 et 5 soit entièrement équipée d'aubes. On introduit ensuite deux aubes 18 et 19 dans le secteur 17, qui sont orientées et poussées contre les deux dernières aubes 32, 33 placées sur les rebords. On introduit entre les deux aubes 18, 19 enfoncées radialement, une aube d'arrêt 20 que l'on oriente dans la direction finale. On tire radialement les aubes 18 et 19 et l'on introduit axialement au-dessous des plateformes des trois aubes 18, 19, 20 le moyen d'arrêt que l'on fixe par deux vis 30, 31 vissées dans les trous filetés des dents du moyen d'arrêt.The method of mounting the blades on the rotor, according to the invention, comprises the introduction of the blade roots into the circumferential groove of the rim in the region of the mounting sector, the root of a blade being introduced into the groove longitudinally, then rotated by an angle of 90 ° to bring the blade to its final position and place the foot transversely in the groove. The blade is pulled radially, then slid circumferentially to bring the platform to the flanges 4, 5 of the rim, the recesses 14 and 15 of the platform 11 cooperating with the recesses 6 and 7 of the flanges, possibly with the interposition of a seal placed in grooves 8 and 9 to ensure sealing. This operation is repeated until the rim part comprising the flanges 4 and 5 is fully equipped with blades. Then two blades 18 and 19 are introduced into the sector 17, which are oriented and pushed against the last two blades 32, 33 placed on the edges. Is introduced between the two blades 18, 19 driven radially, a stop blade 20 which is oriented in the final direction. The blades 18 and 19 are pulled radially and the stop means which are fixed axially below the platforms of the three blades 18, 19, 20 are fixed by two screws 30, 31 screwed into the threaded holes of the teeth stop means.

L'introduction du pied de l'aube d'arrêt 20 est rendue possible grâce aux coins coupés de la plateforme. L'aube étant tirée radialement, la plateforme peut passer au-dessus des plateformes des aubes 18 et 19 et tourner entre leurs pales sans être gênée par celles-ci et prendre sa place entre les plateformes des deux aubes adjacentes. La figure 3 montre en traits interrompus une position intermédiaire de l'aube d'arrêt 20 lors de sa mise en place par rotation.The introduction of the foot of the stop blade 20 is made possible by the cut corners of the platform. The blade being pulled radially, the platform can pass over the platforms of the blades 18 and 19 and rotate between their blades without being hindered by them and take its place between the platforms of the two adjacent blades. The Figure 3 shows in broken lines an intermediate position of the stop vane 20 during its establishment by rotation.

Comme les explications précédentes et les figures l'ont montré, la rainure circonférentielle retenant les pieds d'aube conserve tout au long de la jante une largeur constante. En particulier, la dimension de la partie étroite 16 de la rainure reste constante. Le secteur de montage, formé par suppression des rebords de la jante, n'a aucune action sur la tenue mécanique de la rainure circonférentielle et du disque d'aube.As the preceding explanations and the figures have shown, the circumferential groove retaining the blade roots maintains a constant width throughout the rim. In particular, the dimension of the narrow part 16 of the groove remains constant. The mounting sector, formed by removing the rims from the rim, has no effect on the mechanical strength of the circumferential groove and the blade disc.

Le dispositif de montage et de fixation d'aubes, objet de l'invention, supprime une cause de fatigue du rotor de turbine ou de compresseur sans nécessiter un accroissement de poids ou de difficulté d'usinage.The device for mounting and fixing blades, object of the invention, eliminates a cause of fatigue of the turbine or compressor rotor without requiring an increase in weight or difficulty in machining.

Claims (11)

1. Dispositif de montage et de fixation d'aubes à pied marteau dans un rotor de compresseur et de turbine, la jante du rotor portant une rainure circonférentielle dans laquelle sont maintenues des aubes comportant une pale fixée sur une plateforme rectangulaire prolongée par une échasse cylindrique à l'extrémité de laquelle est fixé, selon le plan de symétrie longitudinal de la plateforme, un pied susceptible de coopérer avec la rainure, caractérisé en ce qu'il comporte un secteur de montage (17) formé par la suppression de deux rebords (4, 5) circonférentiels prévus sur les bords de la jante, ledit secteur ayant une longueur approximativement égale à trois largeurs de plateforme d'aube, une aube d'arrêt (20) présentant deux coins coupés (21,22) diamétralement opposés et un moyen d'arrêt comportant au moins deux dents (24, 25, 26, 27; 41, 42) dont les largeurs sont égales à la distance comprise entre les échasses de deux aubes voisines, et conformé de manière à pouvoir être placé entre le fond du secteur de montage (17) et le dessous des plateformes de trois aubes (18, 19, 20) adjacentes; dont l'aube d'arrêt (20) occupant le secteur de montage (17).1. Device for mounting and fixing blades with a hammer foot in a compressor and turbine rotor, the rim of the rotor carrying a circumferential groove in which blades are maintained comprising a blade fixed on a rectangular platform extended by a cylindrical stilt at the end of which is fixed, according to the longitudinal plane of symmetry of the platform, a foot capable of cooperating with the groove, characterized in that it comprises a mounting sector (17) formed by the removal of two flanges ( 4, 5) circumferential provided on the edges of the rim, said sector having a length approximately equal to three blade platform widths, a stop blade (20) having two diametrically opposite cut corners (21,22) and a stop means comprising at least two teeth (24, 25, 26, 27; 41, 42) whose widths are equal to the distance between the stilts of two neighboring blades, and shaped so as to be able to be placed between the bottom of the mounting sector (17) and the underside of the platforms of three adjacent blades (18, 19, 20); including the stop vane (20) occupying the assembly sector (17). 2. Dispositif selon la revendication 1, caractérisé en ce que les rebords (4, 5) de la jante portent vers l'intérieur des décrochements (6, 7) et en ce que les bords amont et aval de la plateforme des aubes portent sur la partie inférieure des décrochements (14, 15), lesdits décrochements étant susceptibles de coopérer avec les décrochements (6, 7) des rebords (4, 5).2. Device according to claim 1, characterized in that the flanges (4, 5) of the rim bear inwards notches (6, 7) and in that the upstream and downstream edges of the blade platform bear on the lower part of the recesses (14, 15), said recesses being capable of cooperating with the recesses (6, 7) of the flanges (4, 5). 3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la pale de l'aube d'arrêt étant dans un plan approximativement diagonal par rapport à la plateforme, des coins coupés (21, 22) sont prévus à l'extrémité de l'autre diagonale de la plateforme.3. Device according to claim 1 or 2, characterized in that the blade of the stop blade being in a plane approximately diagonal with respect to the platform, cut corners (21, 22) are provided at the end of the other diagonal of the platform. 4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que le moyen d'arrêt (23) est constitué d'un peigne présentant une largeur égale à celle de la jante et comportant quatre dents (24 à 27).4. Device according to one of claims 1 to 3, characterized in that the stop means (23) consists of a comb having a width equal to that of the rim and comprising four teeth (24 to 27). 5. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que le moyen d'arrêt est constitué de deux plaques (39 ; 40) disposées de part et d'autre de la rainure circonférentielle, chaque plaque comportant une dent (41 ; 42) insérée entre les échasses de deux (19, 20 ; 20, 18) des trois aubes adjacentes.5. Device according to one of claims 1 to 3, characterized in that the stop means consists of two plates (39; 40) arranged on either side of the circumferential groove, each plate comprising a tooth ( 41; 42) inserted between the stilts of two (19, 20; 20, 18) of the three adjacent blades. 6. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le moyen d'arrêt porte dans au moins deux dents (25, 26 ; 41, 42) des trous (28, 29 ; 28', 29') destinés à recevoir des moyens de fixation (30, 31).6. Device according to one of the preceding claims, characterized in that the stop means carries in at least two teeth (25, 26; 41, 42) holes (28, 29; 28 ', 29') intended for receiving fixing means (30, 31). 7. Dispositif selon la revendication 6, caractérisé en ce que les bords adjacents des plateformes des trois aubes (18, 19, 20) occupant le secteur d'arrêt (17) portent des demi-trous (34 à 37) pour le passage des moyens de fixation (30, 31).7. Device according to claim 6, characterized in that the adjacent edges of the platforms of the three blades (18, 19, 20) occupying the stop sector (17) carry half-holes (34 to 37) for the passage of fixing means (30, 31). 8. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les plateformes des aubes (19, 18) encadrant l'aube d'arrêt (20) présente une expansion en forme de coin (50; 51) de manière que le côté de leur contour adjacent à l'aube d'arrêt épouse le contour du côté correspondant de l'aube d'arrêt, à l'emplacement du coin coupé (21 ; 22).8. Device according to one of the preceding claims, characterized in that the platforms of the blades (19, 18) framing the stop blade (20) has a wedge-shaped expansion (50; 51) so that the side of their outline adjacent to the stop vane follows the outline of the corresponding side of the stop vane, at the location of the cut corner (21; 22). 9. Dispositif selon la revendication 5, caractérisé en ce que chaque plaque (41 ; 42) présente sur sa surface extérieure une saillie en forme de coin (48; 49) venant occuper l'espace laissé libre entre le pan coupé de la plateforme de l'aube d'arrêt (20) et le bord adjacent de la plateforme voisine (19; 18).9. Device according to claim 5, characterized in that each plate (41; 42) has on its outer surface a wedge-shaped projection (48; 49) coming to occupy the space left free between the cutaway of the stop blade platform (20) and the adjacent edge of the neighboring platform (19; 18). 10. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les décrochements (6, 7) prévus dans les rebords (4, 5) de la jante portent des gorges circonférentielles (8, 9) destinées à recevoir un joint d'étanchéité.10. Device according to one of the preceding claims, characterized in that the recesses (6, 7) provided in the flanges (4, 5) of the rim carry circumferential grooves (8, 9) intended to receive a seal of sealing. 11. Procédé de montage et de fixation d'aube pour la mise en oeuvre du dispositif selon l'une des revendications 1 à 10, caractérisé en ce que : - on introduit les pieds d'aube dans la rainure circonférentielle dans la zone du secteur de montage, - on oriente les pales d'aube dans leur direction définitive en faisant tourner l'aube de 90° autour de son échasse, - on les tire radialement et on les,fait glisser circonférentiellement sur la partie de la jante portant les rebords, lorsque toute ladite partie a été munie d'aubes, on place deux aubes (18, 19) dans le secteur de montage (17), on les oriente et les amène contre les dernières aubes (32, 33) montées sur les rebords (4, 5), on introduit alors l'aube d'arrêt (20) entre les deux aubes (18, 19) précédemment placées, et en la tirant ra- , dialement de manière que sa plateforme soit au-dessus des plateformes des aubes voisines, on l'oriente alors dans sa position définitive ; on introduit le moyen d'arrêt (23 ; 39, 40) entre les plateformes des trois aubes et le fond du secteur (17), on place les moyens de fixation (30, 31). 11. A method of mounting and fixing the blade for the implementation of the device according to one of claims 1 to 10, characterized in that: - the blade roots are introduced into the circumferential groove in the area of the mounting sector, - the blades of the blade are oriented in their final direction by rotating the blade 90 ° around its stilt, - They are pulled radially and they are circumferentially slid over the part of the rim carrying the flanges, when the entire said part has been provided with blades, two blades (18, 19) are placed in the mounting sector (17) , they are oriented and brought against the last blades (32, 33) mounted on the flanges (4, 5), the stop blade (20) is then introduced between the two blades (18, 19) previously placed, and by pulling it horizontally so that its platform is above the platforms of the neighboring blades, it is then oriented in its final position; the stop means (23; 39, 40) are introduced between the platforms of the three blades and the bottom of the sector (17), the fixing means (30, 31) are placed.
EP82402242A 1981-12-09 1982-12-08 Compressor or turbine rotor, the wheel of which supports the hammer-type foot blades and method of assembling such a rotor Expired EP0081436B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8122982 1981-12-09
FR8122982A FR2517739A1 (en) 1981-12-09 1981-12-09 DEVICE FOR MOUNTING AND FIXING FOOTWEAR COMPRESSOR AND TURBINE HAMMER AND METHOD OF MOUNTING

Publications (2)

Publication Number Publication Date
EP0081436A1 true EP0081436A1 (en) 1983-06-15
EP0081436B1 EP0081436B1 (en) 1985-10-09

Family

ID=9264819

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82402242A Expired EP0081436B1 (en) 1981-12-09 1982-12-08 Compressor or turbine rotor, the wheel of which supports the hammer-type foot blades and method of assembling such a rotor

Country Status (5)

Country Link
US (1) US4465432A (en)
EP (1) EP0081436B1 (en)
JP (1) JPS58104304A (en)
DE (1) DE3266872D1 (en)
FR (1) FR2517739A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156908A (en) * 1984-03-30 1985-10-16 Rolls Royce Bladed rotor assembly for gas turbine engine
GB2170275A (en) * 1985-01-25 1986-07-30 Gen Electric Blade platform
EP0369926A1 (en) * 1988-11-14 1990-05-23 United Technologies Corporation Axial compressor blade assembly
EP0386876A1 (en) * 1989-03-10 1990-09-12 General Motors Corporation Blade-locking system
EP0388286A1 (en) * 1989-03-15 1990-09-19 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Blades with hammer-type feet for improved angular positioning
FR2686941A1 (en) * 1992-01-30 1993-08-06 Gen Electric ROTOR FIN WITH ANTI-OSCILLATING HEELS AND ROTOR OF A GAS TURBINE ENGINE COMPRISING SUCH FINS.
GB2265671A (en) * 1992-03-24 1993-10-06 Rolls Royce Plc Bladed rotor for a gas turbine engine
EP0707135A3 (en) * 1994-10-14 1998-09-02 Asea Brown Boveri Ag Bladed rotor
EP1865153A2 (en) 2006-06-05 2007-12-12 United Technologies Corporation Rotor disk and blade arrangement and method of assembly thereof
EP2918784A1 (en) * 2014-03-13 2015-09-16 Siemens Aktiengesellschaft Blade foot for a turbine blade

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2616480B1 (en) * 1987-06-10 1989-09-29 Snecma DEVICE FOR LOCKING BLADES WITH A HAMMER FOOT ON A TURBOMACHINE DISC AND ASSEMBLY AND DISASSEMBLY METHODS
JPH0472685U (en) * 1990-10-31 1992-06-26
JP2002544432A (en) * 1999-05-14 2002-12-24 シーメンス アクチエンゲゼルシヤフト Fluid machine with leak prevention device for rotor
US6508631B1 (en) * 1999-11-18 2003-01-21 Mks Instruments, Inc. Radial flow turbomolecular vacuum pump
FR2856728B1 (en) * 2003-06-27 2005-10-28 Snecma Moteurs TURBOREACTOR COMPRESSOR BLADE
US8206116B2 (en) 2005-07-14 2012-06-26 United Technologies Corporation Method for loading and locking tangential rotor blades and blade design
FR2907497B1 (en) * 2006-10-24 2009-01-23 Snecma Sa BALANCING SYSTEM FOR TURBOMACHINE ROTOR
DE102010053141B4 (en) * 2009-12-07 2018-10-11 General Electric Technology Gmbh Turbine aggregate with possible over-rotation of the foot of a blade to the installation of a last blade
US8888459B2 (en) * 2011-08-23 2014-11-18 General Electric Company Coupled blade platforms and methods of sealing
EP2738356B1 (en) * 2012-11-29 2019-05-01 Safran Aero Boosters SA Vane of a turbomachine, vane assembly of a turbomachine, and corresponding assembly method
CN102979763B (en) * 2012-12-29 2015-09-16 成都成发科能动力工程有限公司 Axial Flow Compressor rotor blade mounting structure and moving vane mounting type
JP6190622B2 (en) * 2013-05-15 2017-08-30 三菱日立パワーシステムズ株式会社 Turbine
WO2014186028A1 (en) * 2013-05-17 2014-11-20 United Technologies Corporation Tangential blade root neck conic
US10190595B2 (en) 2015-09-15 2019-01-29 General Electric Company Gas turbine engine blade platform modification
JP6785555B2 (en) * 2016-01-15 2020-11-18 三菱パワー株式会社 How to assemble the rotor blade to the turbine rotor
RU2634507C1 (en) * 2016-12-15 2017-10-31 Публичное Акционерное Общество "Уфимское Моторостроительное Производственное Объединение" (Пао "Умпо") Rotor working wheel of high-pressure compressor of gas turbine engine
CN112780351A (en) * 2019-11-07 2021-05-11 中国航发商用航空发动机有限责任公司 Aeroengine rotor and aeroengine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE691800C (en) * 1938-07-30 1940-06-06 Siemens Schuckertwerke Akt Ges Blading for steam or gas turbines in particular with radial pressure
FR1192382A (en) * 1956-12-26 1959-10-26 Gen Electric Gas turbine rotor
DE1085643B (en) * 1959-04-13 1960-07-21 Ehrhardt & Sehmer Ag Maschf Blade attachment in axial flow machines
US3042368A (en) * 1960-06-29 1962-07-03 Worthington Corp Removable lock for blade wheel assembly
US3328867A (en) * 1962-07-11 1967-07-04 Bbc Brown Boveri & Cie Turbine blading

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US843237A (en) * 1906-03-31 1907-02-05 Frank D Shepherd Steam-turbine.
US922581A (en) * 1908-01-22 1909-05-25 Gen Electric Elastic-fluid turbine.
US974496A (en) * 1910-01-13 1910-11-01 Duston Kemble Turbine vane and wheel.
US1601402A (en) * 1921-01-15 1926-09-28 Lorenzen Christian Gas turbine
DE733419C (en) * 1940-06-13 1943-03-26 Siemens Ag Blade lock for axially loaded rotor blade rims of steam or gas turbines
CH259204A (en) * 1942-12-24 1949-01-15 Sulzer Ag Process for the manufacture of rotors for turbo machines.
GB840820A (en) * 1957-03-22 1960-07-13 Vickers Electrical Co Ltd Locking means for axial flow turbo-machine blading
GB1358798A (en) * 1972-06-09 1974-07-10 Bbc Sulzer Turbomaschinen Sealing element for a turbo-machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE691800C (en) * 1938-07-30 1940-06-06 Siemens Schuckertwerke Akt Ges Blading for steam or gas turbines in particular with radial pressure
FR1192382A (en) * 1956-12-26 1959-10-26 Gen Electric Gas turbine rotor
DE1085643B (en) * 1959-04-13 1960-07-21 Ehrhardt & Sehmer Ag Maschf Blade attachment in axial flow machines
US3042368A (en) * 1960-06-29 1962-07-03 Worthington Corp Removable lock for blade wheel assembly
US3328867A (en) * 1962-07-11 1967-07-04 Bbc Brown Boveri & Cie Turbine blading

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156908A (en) * 1984-03-30 1985-10-16 Rolls Royce Bladed rotor assembly for gas turbine engine
GB2170275A (en) * 1985-01-25 1986-07-30 Gen Electric Blade platform
EP0369926A1 (en) * 1988-11-14 1990-05-23 United Technologies Corporation Axial compressor blade assembly
EP0386876A1 (en) * 1989-03-10 1990-09-12 General Motors Corporation Blade-locking system
EP0388286A1 (en) * 1989-03-15 1990-09-19 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Blades with hammer-type feet for improved angular positioning
US5044886A (en) * 1989-03-15 1991-09-03 Societe Nationale D'etude Et De Moteurs D'aviation "S.N.E.C.M.A." Rotor blade fixing providing improved angular alignment of said blades
FR2686941A1 (en) * 1992-01-30 1993-08-06 Gen Electric ROTOR FIN WITH ANTI-OSCILLATING HEELS AND ROTOR OF A GAS TURBINE ENGINE COMPRISING SUCH FINS.
GB2265671A (en) * 1992-03-24 1993-10-06 Rolls Royce Plc Bladed rotor for a gas turbine engine
EP0707135A3 (en) * 1994-10-14 1998-09-02 Asea Brown Boveri Ag Bladed rotor
EP1865153A2 (en) 2006-06-05 2007-12-12 United Technologies Corporation Rotor disk and blade arrangement and method of assembly thereof
EP1865153A3 (en) * 2006-06-05 2011-01-12 United Technologies Corporation Rotor disk and blade arrangement and method of assembly thereof
US8608446B2 (en) 2006-06-05 2013-12-17 United Technologies Corporation Rotor disk and blade arrangement
EP2918784A1 (en) * 2014-03-13 2015-09-16 Siemens Aktiengesellschaft Blade foot for a turbine blade

Also Published As

Publication number Publication date
JPS58104304A (en) 1983-06-21
FR2517739B1 (en) 1984-02-10
US4465432A (en) 1984-08-14
DE3266872D1 (en) 1985-11-14
EP0081436B1 (en) 1985-10-09
FR2517739A1 (en) 1983-06-10
JPS6215727B2 (en) 1987-04-09

Similar Documents

Publication Publication Date Title
EP0081436B1 (en) Compressor or turbine rotor, the wheel of which supports the hammer-type foot blades and method of assembling such a rotor
EP0083289B1 (en) Rotor wheel of a turbo jet engine comprising a device for axially and radially retaining the rotor blades on the rotor wheel
EP0305223B1 (en) Blade locking device and (de)mounting thereof
EP0068923B1 (en) Locking device for a rotor blade of a turbo machine
EP0061948B1 (en) Rotor of a turboreactor, especially of a fan, comprising devices for securing the fan blades and for fixing the frontal rotor cap
EP1314856B1 (en) Device for locking blades in a disk groove
EP2075417B1 (en) Platform for a bladed wheel of a turbomachine, bladed wheel and compressor or turbomachine comprising such a bladed wheel
EP1760258B1 (en) Locking appartus for an axial retention ring of a blade
FR2918409A1 (en) Rotating part i.e. fan, for turbine engine of aircraft, has blade with circumferential projection detected in continuity of adjacent platform forming sector, where projection participates in definition of inter-blade surface
FR2504975A1 (en) DEVICE FOR FIXING BLADES OF ROTORS OF TURBOMACHINES
EP1164251A1 (en) Rotor blade locking means
EP0084491B1 (en) Axial locking of rotor blades for turbines and compressors
FR2524933A1 (en) Turbine rotor blade root retainer - has grooved root packing engaging with circumferential grooves and other parts
FR2890105A1 (en) Retention ring immobilization device for e.g. engine of aircraft, has stops positioned such that stops are stopped respectively against immobilization hooks, and slot covered by other hook when retention ring is placed in groove
EP0017567B1 (en) Device for fixing blades to the rotor of the compressor of a turbojet plant
FR2715968A1 (en) Separating platform, fitting between blades on rotor
EP1156896B1 (en) Crimping ring and method for making same
EP2719866B1 (en) Rotor disk of a turbomachine comprising a lock for blades
FR2988128A1 (en) TURBINE ROTOR FOR A THERMOELECTRIC POWER PLANT
FR2728014A1 (en) SUPPORT OF FINS, IN PARTICULAR FOR GAS TURBINE
FR2519073A1 (en) ROTOR FOR FLUID FLOW MACHINES, IN PARTICULAR FOR TURBOMACHINES
FR2649261A1 (en) Rotor with magnets for a magneto generator
WO2012110735A1 (en) Device for blocking vanes around a periphery, for a turbomachine, to be deployed radially by a rotational movement of a member of the device
EP0665363B1 (en) Assembling device for joining the tunnel lining segments
FR2671140A1 (en) Guide vanes for a turbo machine compressor

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19821229

AK Designated contracting states

Designated state(s): DE FR GB

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 3266872

Country of ref document: DE

Date of ref document: 19851114

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: FR

Ref legal event code: CL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20001117

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20001206

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010226

Year of fee payment: 19

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011208

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Ref country code: FR

Ref legal event code: CD

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020702

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20011208

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020830

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST