EP3495625B1 - Aube de turbomachine réglable - Google Patents

Aube de turbomachine réglable Download PDF

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Publication number
EP3495625B1
EP3495625B1 EP18209947.3A EP18209947A EP3495625B1 EP 3495625 B1 EP3495625 B1 EP 3495625B1 EP 18209947 A EP18209947 A EP 18209947A EP 3495625 B1 EP3495625 B1 EP 3495625B1
Authority
EP
European Patent Office
Prior art keywords
blade
clamping
adjusting means
longitudinal axis
contact surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18209947.3A
Other languages
German (de)
English (en)
Other versions
EP3495625A1 (fr
Inventor
Vitalis Mairhanser
Manuel Hein
Axel Stettner
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.)
MTU Aero Engines AG
Original Assignee
MTU Aero Engines AG
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 MTU Aero Engines AG filed Critical MTU Aero Engines AG
Publication of EP3495625A1 publication Critical patent/EP3495625A1/fr
Application granted granted Critical
Publication of EP3495625B1 publication Critical patent/EP3495625B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • 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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F01D17/162—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/563—Fluid-guiding means, e.g. diffusers adjustable specially adapted for elastic fluid pumps
    • 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
    • F05D2240/00—Components
    • F05D2240/10—Stators
    • F05D2240/12—Fluid guiding means, e.g. vanes
    • F05D2240/128—Nozzles
    • 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
    • F05D2240/00—Components
    • F05D2240/90—Mounting on supporting structures or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05D2260/79—Bearing, support or actuation arrangements therefor

Definitions

  • the present invention relates to a blade arrangement with an adjustable blade for a turbomachine, a turbomachine assembly with the blade arrangement and a method for assembling a blade arrangement.
  • Gas turbines with adjustable guide vanes are known from in-house practice, the vane shafts of which extend through bearing openings in the turbomachine housing. Adjusting levers are or are placed on these vane shafts in their longitudinal or axial direction, which are or are braced by nuts in the longitudinal direction against shoulders of the vane shafts.
  • the US 8 087 883 B2 relates to an adjusting device for a turbomachine compressor, which has a rod, a device for fastening a first end of the rod to a pin of a blade to be adjusted and a connecting device between a second end of the rod and a control ring, the rod is essentially cylindrical, its first End engages a bore in the pin of the bucket and the device further comprises a clamping device for clamping the first end of the rod in the bore in the pin to secure it to the pin.
  • the FR 2 904 669 A1 relates to a device which has a fixing unit for fixing one end of a control rod to a control pin, an axis and a housing connecting another end of the rod and an actuating ring and the pin being closed by a cylindrical head on which the end engages perpendicularly, which is provided with a clamping unit for clamping the head of the pivot along a direction perpendicular to a longitudinal axis of the rod and to a main axis of the pivot
  • the WO 2009/076508 A1 relates to an assembly comprising a vane connected to a shank that extends from the vane, terminates in a distal end, and has a recess in an outer surface at a location between the vane and the distal end, the distal The end is inserted into an opening of a crank arm until the recess is located within the opening and causes a holding element associated with the crank arm to engage in the recess in such a way that the crank arm is essentially immovably attached to the shaft.
  • One object of an embodiment of the present invention is to improve turbomachines with adjustable blades and / or their assembly.
  • a blade arrangement for a turbomachine in particular at least one blade arrangement of a turbomachine assembly, in particular (at least) one blade arrangement for one or at least one compressor or turbine stage for a or a gas turbine, in particular for an aircraft engine (s), a shovel on which is adjustable, in particular rotatable, is or is mounted on, in particular in, the turbomachine (subassembly) or which is set up or used for this purpose.
  • the vane is a guide vane and / or has a vane blade or profile for flow deflection and / or a one-part or multi-part vane shaft, which in one embodiment is adjustable, in particular rotatable, on, in particular in, the turbo machine (sub-assembly) is stored or is or is set up or used for this purpose.
  • Such blades represent particularly advantageous applications of the present invention.
  • the vane in particular its vane shaft, has at least one first, in particular flat or curved, contact surface with which or against which an adjusting means of the vane arrangement by which the vane is or is adjusted is set up or is used for this purpose, in particular in a form-fitting and / or contacting and / or play-free manner, braced, in particular pressed, is or is or is set up or is used for this purpose.
  • a curved, in particular convex, contact surface can advantageously be used for self-centering, and a flat contact surface in one embodiment advantageously improves power transmission.
  • the first contact surface is inclined against a longitudinal, in particular adjustment or rotation axis of the blade, in particular the blade shaft, or not inclined by at most 15 °, in particular by at most 10 °, in one embodiment by at most 5 °.
  • the vane arrangement has a one-part or multi-part tensioning means, in one embodiment through or by means of its partially or fully elastic compression transversely to the longitudinal axis of the vane and in one embodiment additionally or alternatively by or by means of its infeed, in particular expanding and / or shifting, in particular screwing or assembling, the actuating device is braced, in particular pressed, against the first contact surface in a clamping device direction, or is or is at least partially elastically compressed in a direction transverse to the longitudinal axis and / or in the clamping device direction delivered, in particular expanded and / or shifted, in particular screwed or mounted, the adjusting device clamped, in particular pressed, against the first contact surface, or which is set up or used for this purpose, wherein in one embodiment the clamping device direction forms an angle of at least 45 ° with the longitudinal axis of the blade, in one embodiment at least 60 °, in particular at least 75 ° and in one embodiment at least 85 °
  • the adjusting means is no longer, at least predominantly, braced in the longitudinal axis direction of the blade or - in relation to the blade longitudinal axis - axially and / or with a shoulder of the blade, but rather, at least predominantly, perpendicularly or transversely to the longitudinal axis direction or - in relation to the longitudinal axis of the blade - radially and / or with or against a laterally arranged contact surface or longitudinal side of the blade, in particular of the blade shaft.
  • a (larger) contact surface can be made available and, as a result, its loading in particular can be reduced, and assembly and / or reliability can thus be improved.
  • the contact surface for bracing can also function as a support surface for actuating or adjusting the blade by the adjusting means.
  • the blade arrangement can be made more compact in the direction of the longitudinal axis of the blade.
  • the compression is brought about by the infeed of the clamping device in the clamping device direction.
  • the blade or the blade shaft has at least one second, in particular flat, contact surface with which or against which the actuating means, in particular in a form-fitting and / or contacting manner, is or is braced, in particular pressed, or which for this purpose is set up or is being used.
  • the actuator is or is clamped only with or against the first and optionally the second contact surface, in another embodiment also against one or more additional contact surfaces that are spaced from the first and / or optionally the second contact surface or, in particular, continuously , can pass into (at least one) these.
  • the second contact surface is inclined relative to the first contact surface, in one embodiment by at least 30 °, in particular by at least 60 °, and / or by at most 120 °, in particular by less than 90 °.
  • the actuator is or is braced free of play by the first and second contact surfaces, in particular as a result thereof, or they are set up for this purpose.
  • the second contact surface is not inclined with respect to the longitudinal axis of the blade or the blade shaft or is inclined by at most 15 °, in particular by at most 10 °, and in one embodiment by at most 5 °.
  • the adjusting means is or is in one embodiment by the at least partially elastic compression transversely to the longitudinal axis of the blade and / or the infeed of the clamping device (s) which is at least partially elastically compressed transversely to the longitudinal axis of the blade and / or is supplied in the clamping device direction also clamped against the second contact surface, in particular pressed, or clamping means and second contact surface are used or set up for this purpose.
  • the assembly, stability, load and / or reliability can be (further) improved in one embodiment.
  • the first and second contact surfaces are symmetrical to one another.
  • the load can be (further) improved in one embodiment.
  • first and second contact surfaces are not symmetrical to one another.
  • the assembly can be (further) improved, in particular a clear assembly (orientation) can be ensured.
  • the adjusting means can only be mounted on the blade in one orientation, in particular through a contact geometry.
  • the clamping means is or is attached to, in particular at least partially in, the actuating means, in particular in a non-destructively releasable manner, in particular positively and / or frictionally, in particular self-locking, in particular mounted in the clamping device or in another direction, in particular in the Adjusting means introduced, screwed, locked, wedged and / or pressed into this in one embodiment.
  • the clamping means is or is attached to, in particular at least partially in, the adjusting means in a non-destructive manner, in particular in a materially bonded manner, in particular by means of welding, soldering and / or gluing,
  • the clamping means has a screw, in particular a screw screwed in the clamping means direction and / or a screw with a polygonal, in particular square, hexagonal or octagonal head or a square, hexagonal or octagonal screw, which is particularly useful for Securing by one or more securing means explained below can be advantageous.
  • the tensioning means can have a wedge and / or can be on a wedge surface of the adjusting means and / or a wedge surface of the Support screw, which is inclined towards the longitudinal axis of the blade, so that a displacement of this clamping means (also) in the direction of the longitudinal axis of the blade braces the adjusting means against the blade, in particular its first contact surface.
  • the tensioning means presses in one embodiment against a, in one embodiment, flat contact surface of the blade, in particular the blade shaft, and thereby braces or presses the actuating means against the blade or the blade shaft or the first and possibly second contact surface.
  • the tensioning means is or will be arranged transversely to the longitudinal axis of the blade (seen) between a longitudinal side, in particular a contact surface, of the blade and a support surface of the actuating means opposite, in particular in the direction transversely to the longitudinal axis of the blade (seen), opposite support surface of the actuating means, in particular supported, in particular for bracing the adjusting means against the blade, at least partially elastically compressed, in one embodiment by supporting it on a wedge surface of the adjusting means and / or a wedge surface of the screw which is inclined towards the longitudinal axis of the blade.
  • the adjusting means can have an adjusting lever, in particular it can be.
  • actuating means or levers have at least one point which, when the actuating means is mounted on the vane, is at a maximum distance from the longitudinal axis of the vane or the vane shaft, a normal or perpendicular on the longitudinal axis from the longitudinal axis to this point Maximum extension (direction) of the actuating means or lever (away from the blade) is defined in the context of the present invention.
  • the tensioning means and this maximum direction of extent of the actuating means lie in the circumferential direction around the longitudinal axis of the blade (as seen) in the same semicircle, in particular the same quarter circle sector or in the same circular sector of 180 °, in particular 90 °.
  • the clamping device is or is in a Execution, at least substantially, arranged in the direction of the maximum extent of the adjusting means, in particular screwed into this.
  • installation space in the direction of the longitudinal axis can be saved and / or the assembly can be (further) improved.
  • the tensioning means and this maximum direction of extent of the adjusting means are located away from the blade in the circumferential direction around the longitudinal axis of the blade (as seen) in mutually opposite semicircular, in particular quarter-circle sectors or in mutually opposite circular sectors of 180 °, in particular 90 °, which are rotated against each other by 180 ° in the circumferential direction.
  • the tensioning means is arranged, at least essentially, counter to the direction of the maximum extent of the adjusting means, in particular screwed into it.
  • installation space can be saved on the side opposite the direction of maximum extent.
  • the tensioning means and the maximum extension direction of the adjusting means are located away from the blade in the circumferential direction around the longitudinal axis of the blade (as seen) in semicircular, in particular quarter-circle sectors or circular sectors of 180 ° each, in particular 90 ° each, which is 90 ° in the circumferential direction ° are twisted against each other.
  • installation space in the direction of the longitudinal axis and on the side opposite the maximum extension direction can be saved and / or the assembly can be (further) improved.
  • the blade arrangement has a securing means arrangement with one or more securing means by which the clamping means is or is secured, in particular against loosening, or which are set up or used for this purpose, in particular one or more securing means for form-fitting Securing and / or one or more securing means for frictional securing.
  • At least one securing means of the securing means arrangement is or is screwed to the adjusting means and / or tensioning means or used or set up for this purpose.
  • a securing means can have a self-locking threaded insert which is or is screwed to the adjusting means and the tensioning means, in particular being such.
  • At least one securing means of the securing means arrangement is or is plastically deformed and / or resiliently held between the clamping means and adjusting means, in particular in the clamping means direction, and / or formed integrally with the clamping means or used or set up for this purpose.
  • a securing means can have a securing plate, in particular it can be one.
  • the assembly, stability, load and / or reliability can be (further) improved in one embodiment.
  • the vane arrangement has at least one positioning means, in particular releasably, fastened to the vane and / or the actuating means and / or at least one, in particular integrally formed or non-releasably secured, projection on the vane and / or the actuating means through which or which the actuating means is or is axially positioned on the blade in the direction of its longitudinal axis, in particular positively and / or frictionally, or which is set up or used for this purpose.
  • the or at least one securing and positioning means are formed integrally with one another.
  • the or at least one locking plate functions at the same time as an axial positioning means.
  • the blade in particular its blade shaft, has at least one recess into which the clamping means engages, or which is set up or used for this purpose.
  • the blade in particular its blade shaft, has in one embodiment at least one recess into which the at least one securing and / or positioning means engages, or which is set up or used for this purpose.
  • the adjusting means has a recess or inner surface which is braced or pressed against the first and / or second contact surface of the blade or of the blade shaft or which is set up or used for this purpose.
  • the assembly, stability, load and / or reliability can be (further) improved in one embodiment, in particular in combination.
  • the recess of the adjusting means for bracing against the first and / or second contact surface of the blade is designed to be open or continuous on both sides, in one embodiment by means of electrochemical removal and / or spark erosion.
  • the recess of the adjusting means for bracing against the first and / or second contact surface of the blade is closed on one side or (only) open on one side, in one embodiment by means of electrochemical removal and / or spark erosion.
  • a particularly reliable stop can be formed on the blade for the axial positioning of the adjusting means on the blade in the direction of its longitudinal axis.
  • the first and / or second contact surface of the blade protrude from the recess of the adjusting means on one or both sides.
  • the assembly can be improved, in particular tolerances can be compensated.
  • Fig. 1-5 show a blade arrangement with an adjustable blade and an adjusting means 20 according to an embodiment of the present invention in a side view ( Fig. 1 ), Top view ( Fig. 4 ) or sectional views ( Fig. 3 , 5 ) or the shovel in a perspective partial view ( Fig. 2 ).
  • the blade has a blade 15 and a blade shaft 10, which is or is or is provided for this purpose in a housing of a compressor or turbine stage so as to be rotatable about a longitudinal axis L of the blade or of the blade shaft. This is known per se and is therefore not shown here.
  • the blade or blade shaft has a first contact surface 11 and a second contact surface 12 which is symmetrical with respect to this and which are inclined relative to one another, in the exemplary embodiment by approximately 70 °.
  • both are parallel to the longitudinal axis L, i.e. H. not inclined to this.
  • the two contact surfaces 11, 12 are not symmetrical to one another and / or are slightly inclined relative to the longitudinal axis L.
  • the blade or the blade shaft On the side opposite the two contact surfaces 11, 12, the blade or the blade shaft has a recess with a flat base surface 13 and a slot 14 (cf. Fig. 5 ).
  • the adjusting means 20 has a recess in the form of a through opening 21, with which it is or is plugged onto the blade shaft 10 so that the latter or its contact surfaces 11, 12 reach through the through opening 21.
  • a clamping means in the form of a hexagon screw 30 is or will be screwed into the adjusting means 20 in a clamping means direction S which is at least substantially perpendicular to the longitudinal axis L, ie encloses an angle of about 90 ° with it (horizontally from left to right in Fig. 1 , 3-5 ), so that the screw 30 engages in the recess with the flat base surface 13 and presses in the clamping device direction S against the base surface and thereby pulls the adjusting device 20 against the contact surfaces 11, 12 and clamps or presses against them without play, the screw 30 is at least partially elastically compressed transversely to the longitudinal axis L of the blade.
  • the screw 30 is or is secured by a first securing means in the form of a self-locking threaded insert 41 screwed with or between adjusting means 20 and screw 30 and a second securing means in the form of a locking plate 42, which is or is partially plastically bent for this purpose.
  • the locking plate 42 is or is resiliently held between the head of the screw 30 and the adjusting means 20, so that the screw 30 can pull the adjusting means 20 against the contact surfaces 11, 12 and thus brace it against them.
  • the locking plate is flexible here to compensate for tolerances.
  • the locking plate 42 engages in the slot 14 and thus positions the adjusting means 20 on the blade axially in the direction of its longitudinal axis L. Accordingly, the locking plate 42 forms an integrally formed locking and positioning means.
  • Fig. 6, 7 show in Fig. 4, 5 correspondingly a blade arrangement according to a further embodiment of the present invention.
  • Features that correspond to one another are identified by identical reference symbols, so that reference is made to the preceding description and only differences are discussed below.
  • the actuating means 20 has a maximum extension direction M away from the blade (horizontally from left to right in FIG Fig. 4-7 ).
  • the clamping device direction 30 and the maximum extension direction M lie in the same semicircular sector as seen in the circumferential direction around the longitudinal axis L, since the screw 30 is or is screwed into the adjusting means 20 from the side of the maximum extension.
  • FIG. 8, 9 show in Fig. 4, 5 correspondingly a blade arrangement according to a further embodiment of the present invention.
  • Features that correspond to one another are identified again by identical reference symbols, so that reference is made to the preceding description and only differences are discussed below.
  • the adjusting means has an integrally formed projection 22 in the recess 21 open on both sides, which engages in the wedge-shaped groove 14 in the blade shaft 10, whereby the adjusting means 20 is axially positioned on the blade or its blade shaft 10 in the direction of its longitudinal axis L.
  • the recess 21 can also be unilateral (above in Fig. 9 ) be closed or, conversely, the blade or its blade shaft 10 have a projection for axial positioning.
  • FIG. 10, 11 show in Fig. 4, 5 correspondingly a blade arrangement according to a further embodiment of the present invention.
  • Features that correspond to one another are identified again by identical reference symbols, so that reference is made to the preceding description and only differences are discussed below.
  • the clamping means is not designed as a screw 30, but as a wedge 31, which is self-lockingly supported on a wedge surface 23 of the adjusting lever 20, thus between this support surface 23 and the longitudinal side or contact surface 13 of the blade or the blade shaft opposite it transversely to the longitudinal axis L. 10 is at least partially elastically compressed and so braced the adjusting lever against the first contact surface 11 ', which in the execution of the Figures 10, 11 is curved.
  • a securing means Integral with the wedge 31 is a securing means in the form of a tab 43 which is plastically bent over to secure the wedge under the adjusting lever.
  • the wedge 31 is also arranged in the semicircular sector of the maximum extension direction (see FIG. 6) or a semicircular sector rotated by 90 ° with respect to its semicircular sector and / or additionally or alternatively to the integral tab 43 be or will be secured by a separate securing means.
  • the blade shaft can also have a wedge surface so that the adjusting lever is braced against the first contact surface 11 'by inserting the wedge 31 or a differently shaped clamping means, which in a modification can additionally or alternatively also be flat.
  • the clamping means direction in which the wedge 31 is advanced to clamp the adjusting lever 20 against the first contact surface 11 ', forms an angle of less than 45 ° with the longitudinal axis L of the blade.
  • a clamping device instead of screwing in the screw 30 in the clamping device direction with corresponding at least partially elastic compression, a clamping device can be used that has expanded in the clamping device direction and thereby braces the adjusting lever 20 against the first contact surface 11 '.

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  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (13)

  1. Agencement d'aubes comportant un moyen de réglage et comportant une aube réglable (10-15) pour une turbomachine, présentant au moins une première surface d'appui (11 ; 11'), en particulier plane ou incurvée, pourun serrage, en particulier sans jeu, du moyen de réglage (20) de l'agencement d'aubes pour le réglage de l'aube, cette première surface d'appui n'étant pas inclinée par rapport à un axe longitudinal (L) de l'aube ou étant inclinée d'au plus 15° et l'agencement d'aubes présentant un moyen de serrage (30 ; 31) pour le serrage du moyen de réglage contre la première surface d'appui par compression au moins partiellement élastique du moyen de serrage transversalement à l'axe longitudinal de l'aube et/ou par avancée du moyen de serrage dans une direction de moyen de serrage (S) qui forme un angle d'au moins 45° avec l'axe longitudinal de l'aube, caractérisé en ce que le moyen de serrage présente une vis ou une cale et la presse, pour le serrage du moyen de réglage, contre une surface de contact (13), en particulier plane, de l'aube.
  2. Agencement d'aubes selon la revendication précédente, caractérisé en ce que l'aube présente au moins une seconde surface d'appui (12), en particulier plane, pour le serrage, en particulier sans jeu, du moyen de réglage, laquelle surface d'appui est inclinée par rapport à la première surface d'appui, la seconde surface d'appui n'étant pas inclinée par rapport à l'axe longitudinal (L) de l'aube ou étant inclinée d'au plus 15° et/ou le moyen de réglage pouvant être serré contre la seconde surface d'appui par compression au moins partiellement élastique du moyen de serrage transversalement à l'axe longitudinal de l'aube et/ou par avancée du moyen de serrage dans la direction de moyen de serrage.
  3. Agencement d'aubes selon la revendication précédente, caractérisé en ce que les première et seconde surfaces d'appui sont symétriques ou non symétriques l'une par rapport à l'autre.
  4. Agencement d'aubes selon l'une des revendications précédentes, caractérisé en ce que le moyen de serrage est fixé sur le moyen de réglage de manière amovible non destructive, en particulier autobloquante, ou de manière non amovible non destructive, et/ou en ce que le moyen de serrage est comprimé de manière au moins partiellement élastique transversalementà l'axe longitudinal de l'aube entre un côté longitudinal de l'aube et une surface de support opposée (23) du moyen de réglage.
  5. Agencement d'aubes selon l'une des revendications précédentes, caractérisé en ce que le moyen de serrage et une direction d'extension maximale (M) du moyen de réglage se trouvent à distance de l'aube dans la direction circonférentielle autour de l'axe longitudinal de l'aube dans le même secteur de demi-cercle, en particulier le même secteur de quart de cercle, dans des secteurs de demi-cercle mutuellement opposés, en particulierdes secteurs de quart de cercle mutuellement opposés, ou dans des secteurs de demi-cercle, en particulier des secteurs de quart de cercle, tournés de 90° les uns par rapport auxautres.
  6. Agencement d'aubes selon l'une des revendications précédentes, caractérisé par un agencement de moyens de fixation comportant au moins un moyen de fixation (41, 42 ; 43) pour la fixation du moyen de serrage, en particulier par complémentarité de forme et/ou par friction.
  7. Agencement d'aubes selon la revendication précédente, caractérisé en ce qu'au moins un moyen de fixation de l'agencement de moyens de fixation est vissé (41) au moyen de réglage et/ou au moyen de serrage et/ou est déformé plastiquement (42 ; 43) et/ou est élastiquement maintenu (42) entre le moyen de serrage et le moyen de réglage et/ou est formé d'un seul tenant avec le moyen de serrage (43).
  8. Agencement d'aubes selon l'une des revendications précédentes, caractérisé par au moins un moyen de positionnement (42) fixé sur l'aube et/ou le moyen de réglage et/ou au moins une saillie (22) sur l'aube et/ou le moyen de réglage pour le positionnement axial, en particulier par complémentarité de forme et/ou par friction, du moyen de réglage sur l'aube dans le sens de son axe longitudinal.
  9. Agencement d'aubes selon l'une des revendications précédentes, caractérisé par un moyen de fixation et de positionnement (42) formé d'un seul tenant pour, en particulier par complémentarité de forme et/ou par friction, la fixation du moyen de serrage et le positionnement axial du moyen de réglage sur l'aube dans la direction de son axe longitudinal.
  10. Agencement d'aubes selon l'une des revendications précédentes, caractérisé en ce que l'aube présente au moins une cavité (13) pour recevoirau moins partiellement le moyen de serrage et/ou au moins une cavité (14) pour recevoir au moins partiellement le moyen de fixation et/ou de positionnement.
  11. Agencement d'aubes selon l'une des revendications précédentes, caractérisé en ce que le moyen de réglage présente un évidement (21) ouvert des deux côtés ou fermé d'un côté pour un serrage contre la première et/ou la seconde surface d'appui de l'aube.
  12. Ensemble turbomachine, en particulier étage de compresseur ou de turbine d'une turbine à gaz, en particulier d'un moteur d'aéronef, ou turbomachine, en particulier turbine à gaz, en particulier d'un moteur d'aéronef, comportant au moins un agencement d'aubes selon l'une des revendications précédentes.
  13. Procédé d'assemblage d'un agencement d'aubes selon l'une des revendications précédentes, dans lequel l'aube (10-15) et le moyen de réglage (20) sont serrés en particulier par compression au moins partiellement élastique du moyen de serrage transversalement à l'axe longitudinal de l'aube et/ou par avancée du moyen de serrage (30) dans la direction de moyen de serrage (S).
EP18209947.3A 2017-12-07 2018-12-04 Aube de turbomachine réglable Active EP3495625B1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102017222205A1 (de) * 2017-12-07 2019-06-13 MTU Aero Engines AG Verstellbare Turbomaschinenschaufel
DE102018202119A1 (de) * 2018-02-12 2019-08-14 MTU Aero Engines AG Hebelanbindung einer Leitschaufelverstellung für Strömungsmaschinen

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Publication number Priority date Publication date Assignee Title
US4307994A (en) 1979-10-15 1981-12-29 General Motors Corporation Variable vane position adjuster
US5035573A (en) 1990-03-21 1991-07-30 General Electric Company Blade tip clearance control apparatus with shroud segment position adjustment by unison ring movement
US5451116A (en) 1992-06-09 1995-09-19 General Electric Company Tripod plate for turbine flowpath
US5492446A (en) 1994-12-15 1996-02-20 General Electric Company Self-aligning variable stator vane
US6843638B2 (en) * 2002-12-10 2005-01-18 Honeywell International Inc. Vane radial mounting apparatus
FR2879685A1 (fr) 2004-12-16 2006-06-23 Snecma Moteurs Sa Turbomachine a stator comprenant un etage d'aubes de redresseur a calage variable avec reglage de jeu au niveau du pivot d'aube
FR2904668B1 (fr) 2006-08-02 2008-10-31 Snecma Sa Dispositif de commande d'aube a angle de calage variable de turbomachine a biellette cylindrique
FR2904669B1 (fr) * 2006-08-02 2012-05-18 Snecma Dispositif de commande d'aube a angle de calage variable de turbomachine
EP2229509B1 (fr) * 2007-12-12 2014-01-15 Honey Well International Inc. Ensemble aube-biellette et procédé d'assemblage
DE102009009079B4 (de) * 2009-02-14 2012-04-26 Man Diesel & Turbo Se Axialströmungsmaschine
US10428692B2 (en) 2014-04-11 2019-10-01 General Electric Company Turbine center frame fairing assembly
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DE102017222205A1 (de) * 2017-12-07 2019-06-13 MTU Aero Engines AG Verstellbare Turbomaschinenschaufel

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US20190178100A1 (en) 2019-06-13
EP3495625A1 (fr) 2019-06-12
US11525369B2 (en) 2022-12-13

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