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EP4130441A1 - Dispositif de liaison d'une aube à calage variable d'une turbine à gaz et turbine à gaz - Google Patents

Dispositif de liaison d'une aube à calage variable d'une turbine à gaz et turbine à gaz Download PDF

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Publication number
EP4130441A1
EP4130441A1 EP22188203.8A EP22188203A EP4130441A1 EP 4130441 A1 EP4130441 A1 EP 4130441A1 EP 22188203 A EP22188203 A EP 22188203A EP 4130441 A1 EP4130441 A1 EP 4130441A1
Authority
EP
European Patent Office
Prior art keywords
lever
connecting device
pin
receptacle
positioning
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.)
Withdrawn
Application number
EP22188203.8A
Other languages
German (de)
English (en)
Inventor
Axel Stettner
Christian Dr. Roth
Werner Humhauser
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 EP4130441A1 publication Critical patent/EP4130441A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
    • F05D2230/644—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins for adjusting the position or the alignment, e.g. wedges or eccenters
    • 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
    • F05D2250/29—Three-dimensional machined; miscellaneous
    • F05D2250/294—Three-dimensional machined; miscellaneous grooved
    • 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
    • F05D2250/90—Variable geometry
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/36—Retaining components in desired mutual position by a form fit connection, e.g. by interlocking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/37—Retaining components in desired mutual position by a press fit connection

Definitions

  • the invention relates to a connecting device for an adjustable blade of a gas turbine, in particular an aircraft gas turbine, and a gas turbine, in particular an aircraft gas turbine, with a connecting device.
  • Gas turbines have guide vanes and rotor blades. These are arranged on respective guide vane rings or respective rotor blade rings. It is common to mount the blades in the ring in such a way that the individual blades can be rotated about their longitudinal axis. This is common in particular with the guide vanes in order to enable an optimal flow feed to the moving vanes.
  • lever elements are arranged on the end pins of the respective blades, with which the orientation of the individual blades can be adjusted. In order to mechanically connect the individual blade to the associated lever element, the end pin has a threaded section or some other shape that enables power to be transmitted from the lever element to the blade.
  • connection device for an adjustable blade of a gas turbine is for example in EP 3 524 781 B1 disclosed.
  • the connecting device described therein has a pin element connected to a blade in question, a lever element connected to the pin element, the lever element and the pin element being movably mounted together about a pin axis of rotation. Provision is made for arranging a clamping element between the lever element and the pin element, which is mounted in such a way that a non-positive connection is produced between the pin element, the clamping element and the lever element.
  • the lever element, the clamping element and the pin element are aligned with one another by means of a positioning element, with the positioning element being accommodated in a pin receptacle and a lever receptacle.
  • U.S. 2019/0353197A1 discloses a locking tab for restricting rotation of a fastener.
  • the fastener connects a first component of the gas turbine engine and a second component of the gas turbine engine. Engagement between a locking portion and the first component restricts rotation of the locking portion.
  • a wedge extends from a base and is connectable to the fastener such that the fastener is not rotatable relative to the wedge when the locking portion is engaged with the first component.
  • the U.S. 2019/0178096 A1 discloses a lever connection for non-rotatably connecting a guide vane to a lever of a guide vane adjustment of a turbomachine.
  • the lever is formed in one piece on a radially outer end of a substantially hollow-cylindrical clamping sleeve coaxially enclosing the guide vane shank in sections.
  • a first aspect of the invention relates to a connecting device for an adjustable blade of a gas turbine.
  • the gas turbine can in particular be an aircraft gas turbine.
  • the connecting means includes a trunnion member connected to a respective blade.
  • the connecting device has a lever element connected to the pivot element, the lever element and the pivot element being movable together about a pivot axis of rotation.
  • the trunnion element is connected to the lever element, so that the trunnion element and the lever element can rotate about a trunnion axis of rotation of the trunnion element.
  • a clamping element is provided for the connecting device, which is arranged between the lever element and the pin element in such a way that a non-positive connection between the pin element, the clamping element and the lever element can be produced or produced.
  • the connecting device on the clamping element which to Providing a frictional connection between the pin member and the lever member is arranged.
  • the lever element, the clamping element and the pin element are aligned with one another by means of a positioning element.
  • the connecting device has the positioning element, which is set up to align the lever element, the tensioning element and the pin element with one another. Orientation may refer to a direction relative to the pivot axis of rotation.
  • the positioning element is accommodated in a first seat of the pin element and a corresponding second seat of the lever element.
  • the pin element has the first receptacle and the lever element has the second receptacle.
  • the first and second receptacles are each configured to receive the positioning element in order to thereby align the lever element and the pivot element with one another by means of the positioning element.
  • the first receptacle of the spigot element has a depth that is smaller than a spigot radius of the spigot element.
  • the depth of the first receptacle protrudes into the spigot element.
  • the depth is less than the radius that the spigot member has.
  • the depth describes the radial portion of the dimensions of the first recording.
  • the second receptacle of the lever element is designed as a groove which runs axially to the longitudinal axis of the pin and which runs along a radially inner contact surface of a sleeve-like coupling section of the lever element.
  • the second receptacle provided by the lever element is a groove.
  • the groove runs along the axial direction or also the longitudinal direction of the pivot axis of rotation.
  • the second receptacle is arranged along the inner radial contact surface of the sleeve-like coupling section of the lever element.
  • the sleeve-like coupling section can be a hollow cylinder or a hollow cone, for example, with the inner contact surface being the inner surface of the hollow cylinder or the hollow cone.
  • the positioning element can protrude from the first receptacle when it is inserted into it.
  • a protruding part of the positioning element can be guided along the groove when the lever element is arranged on the pin element.
  • the groove can have a depth that prevents the positioning element from falling out. This makes it possible, the sleeve-like To move the coupling member over the pin member along the axial direction of the pin member, wherein the positioning member is guided along the groove to an end portion of the second seat.
  • the advantage resulting from the invention is that a space-saving possibility of fastening a pin element to the lever element by means of the positioning element is made possible.
  • a development of the invention provides that the coupling section and the pin element are arranged concentrically to one another.
  • the coupling section is arranged around the spigot element, with the spigot element being arranged in the center and an edge section being formed by the coupling section.
  • the clamping element has a threaded section to which a nut can be fastened or is fastened, the threaded section being arranged on an axial region of the clamping element which faces away from the journal element.
  • the tensioning element has a thread which is intended to enable the nut to be arranged on the tensioning element.
  • the thread is arranged in the threaded section of the tensioning element.
  • the threaded portion is located in an axial region relative to the longitudinal axis which is axially remote from the spigot member.
  • a bore of the threaded section has a driving profile.
  • the entrainment profile is intended to enable the clamping element to be held in place by a tool with a shape corresponding to the entrainment profile during assembly of the nut. This makes it possible to hold the tensioning element in such a way that a rotation of the tensioning element or a resulting force effect in the tangential direction in relation to the journal axis during unscrewing of the nut on the thread can be prevented. This results in the advantage that forces acting tangentially on the positioning element during attachment of the nut can be reduced.
  • a development of the invention provides that the carrier profile is designed as an internal toothing.
  • the carrier profile has inwardly directed teeth.
  • the carrier profile is designed as a polygonal profile.
  • the entrainment profile has a number of edges which enable the tensioning element to be held in place.
  • the polygonal profile can be a hexagonal or square profile, for example.
  • a development of the invention provides that the pin element has a plurality of first receptacles and the lever element has a plurality of second receptacles in which respective positioning elements are arranged.
  • the connecting device has a plurality of positioning elements in order to align the lever element with the pin element.
  • the individual positioning elements are each arranged in one of the first receptacles of the pin element and one of the second receptacles of the lever element.
  • a development of the invention provides that the first receptacles and the second receptacles each have identical radial angles to one another. In other words, it is provided that the first receptacles and the corresponding second receptacles are evenly distributed with respect to their radial orientation.
  • a development of the invention provides that the first receptacles and the second receptacles have different angles to one another.
  • the further development results in the advantage that a predetermined arrangement of the lever element on the pin element can be specified. As a result, a twisted application of the pin element in the lever element can be avoided.
  • a development of the invention provides that the first receptacle of the pin element is arranged at the axial level of the contact surface of the pin element.
  • the first seat of the pin element is arranged in the axial direction in the axial area in which the contact surface of the pin element is located, which is pressed against the contact surface of the lever element during installation.
  • a development of the invention provides that the lever element has an opening which runs from the groove to an outer wall of the lever element.
  • an outwardly directed surface of the groove, against which the positioning element can rest in the installed state is connected to an outer wall of the lever element through an opening, for example a bore.
  • a positioning element cross section of the positioning element has the shape of a trapezoid and/or a triangle at least in regions along a longitudinal direction of the positioning element.
  • the positioning element cross section has a triangular or trapezoidal shape at least in regions along a longitudinal direction of the positioning element.
  • the first recording and the second recording have a corresponding shape for recording the triangle or the trapezium.
  • a further development of the invention provides that the positioning element is accommodated by the first receptacle and the second receptacle in such a way that the positioning element is offset with a longitudinal direction relative to a center of the pin element. In other words, the positioning element runs offset from the center of the cross section of the pin element.
  • the spigot element has a step or a profile on an axial end of the spigot element, which corresponds to a profile of a bore of the threaded section in order to define a clear orientation of the spigot element in the tensioning element.
  • steps or lugs on the axial end of the spigot member be arranged, which are aligned axially or radially to allow a clear placement in the bore of the threaded portion.
  • a second aspect of the invention relates to a gas turbine, in particular an aircraft gas turbine, which has a connecting device.
  • connection device according to the first aspect of the invention and the advantages thereof apply correspondingly to the gas turbine according to the invention according to the second aspect of the invention and vice versa.
  • FIG. 1 shows a schematic representation of a connecting device 50 of an adjustable blade 51 of a gas turbine 10.
  • a journal element 52 can be seen, which can be connected in one piece to the associated blade 51.
  • the blade 51 can be a moving blade or a guide blade, for example.
  • the connecting device 50 has a lever element 54 .
  • the lever member 54 is configured to rotate the trunnion member 52 about the axial axis AR of the trunnion member 52 to thereby change the orientation of the blade 51 in the gas turbine engine 10 .
  • the lever element 54 can be connected to the pin element 52 via a clamping element 70 .
  • the pin element 52 is arranged in the clamping element 70 with its side 58 facing away from the blade 51 .
  • the clamping element 70 is arranged in a region in a coupling section 62 of the lever element 54 .
  • a positioning element 68 is provided in order to align the lever element 54 and the pin element 52 with respect to one another with respect to a circumferential direction of the connecting device 50 .
  • the positioning element 68 is arranged in a first receptacle 60 of the pin element 52 and a corresponding second receptacle 66 of the lever element 54 .
  • the first receptacle 60 may thus be the receptacle provided by the spigot member 52 for receiving the positioning member 68 by the spigot member 52 .
  • the first receptacle 60 can be designed such that the positioning element 68 can be positively located within the first receptacle 60 of the pin element 52 .
  • a depth of the first receptacle 60 can be selected in such a way that the depth is smaller than a radius of the spigot element 52. The first receptacle 60 therefore does not protrude into a center of the spigot element 52.
  • the corresponding second receptacle 66 of the lever element 54 can be provided to enable the positioning element 68 to be received by the lever element 54 .
  • the second receptacle 66 can be designed as a groove. The groove may be parallel to the axial axis AR of the pin member 52 and may have an open end at an axial end of the lever member 54 .
  • the groove can in particular run along a radially inner contact surface 82 of a sleeve-like coupling section 62 of the lever element 54 .
  • the radially inner contact surface 82 of the coupling portion 62 of the lever member 54 may be provided by exercising a Pressure on a radially outer contact surface 80 of the clamping element 70 to transmit pressure to the pin element 52 and thus to be able to store the pin element 52 in the clamping element 70 .
  • the coupling section 62 can run like a sleeve around the radially outer contact surface 80 of the tensioning element 70 and the pin element 52 .
  • the clamping element 70 can have third recesses 76 which can separate individual clamping sections 74 from one another.
  • the positioning element 68 can protrude through one of these recesses 74 .
  • the positioning element 68 can be on the edge walls of one of the recesses 74 so that the tensioning element 70 can also be aligned with respect to the pin element 52 and the lever element 54 with respect to a circumferential direction about the axial axis AR.
  • the positioning element 68 and the first receptacle 60 and the second receptacle 66 are arranged in the coupling section 62 .
  • the pin element 52 has a plurality of first receptacles 60 .
  • the first receptacles 60 of the spigot member 52 may have angles to one another that may be identical or different from one another. Angles that differ from one another have the advantage that they can be selected in such a way that only one alignment of the individual components 52, 54, 70 with one another can be made possible. This can prevent the components 52, 54, 70 from being arranged one on top of the other in a twisted manner.
  • the lever element 54 accordingly has several of the second receptacles 66 which correspond to the respective first receptacles 60 .
  • the lever element 54 has an opening 67 which runs from the second receptacle 66 to an outer wall of the lever element 54 .
  • a gauge for example, to check whether the positioning element 68 is arranged in the connecting device 50 .
  • the connecting device 50 can have a threaded portion 84 which is opposite to one of the vane 51 axial side of the clamping element 70 is located.
  • a nut 86 can be arranged on the threaded section 84 . When the nut 86 is tightened, the lever element 54 is axially displaced relative to the tensioning element 70. The radially outer contact surface 80 of the lever element 54 can be pressed against the radially inner contact surface of the tensioning element due to the axial displacement.
  • the tensioning element 70 can have a carrier profile 63 on one axial end.
  • the driver profile 63 can have internal teeth, for example, or be set up as a polygon.
  • FIG. 2 shows a schematic representation of a cross section through in the FIG. 1 shown schematic representation of the connecting device 50.
  • the connecting device 50 is shown in an assembled state, wherein a position of the positioning element 68 in the first receptacle 60 of the pin element 52 and the second receptacle 66 of the lever element 54 can be seen.
  • the depth of the first receptacle 60 of the spigot member 52 does not extend to the center of the spigot member 52 .
  • a depth of the second socket is selected such that the positioning element 68 is prevented from falling out of the first socket in an assembled state.
  • the course of the opening 67 can be seen, which can be set up as a channel, for example, which can run from a section of the second receptacle to an outer surface of the lever element 54 .
  • the opening 67 can be made in the lever element 54, for example as a bore, so that the presence of the positioning element 68 can be checked with a suitable tool, such as a plug gauge.
  • the positioning element 68 can be inserted at the radial height of the contact surface 80 into a highly precise pin receptacle 60 of limited depth in the pin element 52 and positions the lever element 54 by means of the groove as a second receptacle 66.
  • the second receptacle 66 has a limited depth so that the Positioning element 68 can not fall out.
  • positioning elements 68 can be used, which are evenly or unevenly distributed.
  • An uneven distribution can, for example, prevent incorrect assembly.
  • An internal toothing 63 or also a square, hexagonal or polygonal or toothing is introduced into the bore of the threaded section 84 with which the clamping element 70 can be held firmly during assembly when the nut 86 is tightened. As a result, no or have an effect during assembly. lower forces on the positioning element 68.
  • FIG. 3 12 shows a schematic representation of another embodiment of the pin element 52 in a concentric arrangement in a further embodiment of the lever element 54. Shown are the first socket 60 of the pin element, the second socket 66 of the lever element and the positioning element 68 in an embodiment with a trapezoidal cross-sectional profile.
  • a positioning element cross section 69 of the positioning element 68 can have the shape of a trapezoid and/or a triangle at least in regions along a longitudinal direction of the positioning element 68 .
  • the first receptacle 60 and/or the second receptacle 66 can have a corresponding trapezoidal or triangular shape.
  • an alignment accuracy of the lever element 54 to the pin element 52 can be increased compared to a cuboid shape of the positioning element cross section 69 of the positioning element 68 because a more precise arrangement of the positioning element 68 in the first receptacle 60 and the second receptacle 66 is possible.
  • the first receptacle 60 and the second receptacle 66 can be introduced eccentrically in order to clearly define the alignment of blade 51 and connecting device 50 .
  • the first receptacle 60 and the second receptacle 66 are positioned such that the positioning element 68 is arranged in an assembled state with its longitudinal direction such that it does not run centered through the center of the pin element 52, but compared to this. This results in the advantage that a clear arrangement of the pin element 52 in relation to the lever element 54 is made possible.
  • FIG. 4 shows a schematic representation of the further embodiment of the trunnion element 58 from FIG. 3 .
  • the axial end of the pin member 58 may be stepped. by means of a Asymmetry in the bore of the threaded section 84 allows an alignment of blade 51 and connecting device 50 to be clearly defined.
  • a nose or a profile can be arranged at the axial end of the pin element 58 which corresponds to a shape or a profile of the bore of the threaded section 84 .
  • FIG. 3 and FIG. 4 and the features disclosed in the associated descriptions of the figures form an embodiment which in itself can already be regarded as an independent invention.
  • Prior art locators 68 may be stressed during assembly. This can take place, for example, when nut 86 is tightened. An alignment of pin element 52 to lever element 54 by means of positioning element 68 can be carried out with limited accuracy due to large tolerances in first receptacles 60 and/or second receptacles 66 according to the prior art, which may not be sufficient under certain circumstances. Connection devices 50 according to the prior art can be mounted on the blade 51 rotated by 180°. Since the positioning element 68 according to the prior art is arranged above the contact surface 80 and the lever element 54, there is an increased radial space requirement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Clamps And Clips (AREA)
  • Insertion Pins And Rivets (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP22188203.8A 2021-08-05 2022-08-02 Dispositif de liaison d'une aube à calage variable d'une turbine à gaz et turbine à gaz Withdrawn EP4130441A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021120382.1A DE102021120382A1 (de) 2021-08-05 2021-08-05 Verbindungseinrichtung einer verstellbaren Schaufel einer Gasturbine und Gasturbine

Publications (1)

Publication Number Publication Date
EP4130441A1 true EP4130441A1 (fr) 2023-02-08

Family

ID=82786896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22188203.8A Withdrawn EP4130441A1 (fr) 2021-08-05 2022-08-02 Dispositif de liaison d'une aube à calage variable d'une turbine à gaz et turbine à gaz

Country Status (3)

Country Link
US (1) US20230043732A1 (fr)
EP (1) EP4130441A1 (fr)
DE (1) DE102021120382A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2113194A1 (de) * 1971-03-18 1972-09-28 Daimler Benz Ag Lagerung von Verstellschaufeln
EP1439283A1 (fr) * 2003-01-17 2004-07-21 Snecma Moteurs Agencement de montage d'aubes a calage variable
GB2402181A (en) * 2003-05-27 2004-12-01 Rolls Royce Plc a variable vane arrangement for a turbomachine
WO2014158455A1 (fr) * 2013-03-13 2014-10-02 United Technologies Corporation Bras d'aube usiné d'un système d'actionnement d'aube variable
EP3333374A1 (fr) * 2016-12-08 2018-06-13 MTU Aero Engines GmbH Réglage d'aube directrice pourvu de levier de réglage monté latéral et procéde associé
US20190178096A1 (en) 2017-12-07 2019-06-13 MTU Aero Engines AG Guide vane connection
EP3524781A1 (fr) 2018-02-09 2019-08-14 MTU Aero Engines GmbH Dispositif de raccordement pour une aube réglable d'une turbine à gaz
US20190353197A1 (en) 2018-05-16 2019-11-21 United Technologies Corporation Anti-rotation device for fasteners

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US9611751B1 (en) * 2015-09-18 2017-04-04 Borgwarner Inc. Geometry for increasing torque capacity of riveted vane lever

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2113194A1 (de) * 1971-03-18 1972-09-28 Daimler Benz Ag Lagerung von Verstellschaufeln
EP1439283A1 (fr) * 2003-01-17 2004-07-21 Snecma Moteurs Agencement de montage d'aubes a calage variable
GB2402181A (en) * 2003-05-27 2004-12-01 Rolls Royce Plc a variable vane arrangement for a turbomachine
WO2014158455A1 (fr) * 2013-03-13 2014-10-02 United Technologies Corporation Bras d'aube usiné d'un système d'actionnement d'aube variable
EP3333374A1 (fr) * 2016-12-08 2018-06-13 MTU Aero Engines GmbH Réglage d'aube directrice pourvu de levier de réglage monté latéral et procéde associé
US20190178096A1 (en) 2017-12-07 2019-06-13 MTU Aero Engines AG Guide vane connection
EP3524781A1 (fr) 2018-02-09 2019-08-14 MTU Aero Engines GmbH Dispositif de raccordement pour une aube réglable d'une turbine à gaz
US20190353197A1 (en) 2018-05-16 2019-11-21 United Technologies Corporation Anti-rotation device for fasteners

Also Published As

Publication number Publication date
DE102021120382A1 (de) 2023-02-09
US20230043732A1 (en) 2023-02-09

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