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
  • 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
  • F05D2250/24—Three-dimensional ellipsoidal
  • F05D2250/241—Three-dimensional ellipsoidal spherical
• • 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
  • F05D2260/50—Kinematic linkage, i.e. transmission of position
  • F05D2260/56—Kinematic linkage, i.e. transmission of position using cams or eccentrics

Definitions

• the present invention relates to an adjusting ring arrangement for adjusting blades of a turbomachine, a turbomachine assembly with the adjusting ring arrangement, a gas turbine with the turbomachine assembly, the use of the adjusting ring arrangement for adjusting blades, and a method for manufacturing the adjusting ring arrangement.
• One object of an embodiment of the present invention is to improve a turbomachine assembly and/or turbomachine adjusting ring arrangement and/or its manufacture.
• an adjusting ring arrangement which is designed for adjusting the blades of a turbomachine, which in one embodiment serves or is used, comprises a one- or multi-part adjusting ring ("unison ring"), which in one embodiment is rotatable about a (main) machine axis of the turbomachine and thereby adjusts the blades, and a plurality of spherical or ball-shaped bearings distributed around its circumference, each bearing having a bearing surface on the adjusting ring side and an inner body tiltable therein relative to the adjusting ring, which is designed, in particular serves or is used, for connecting a lever, wherein this lever is designed, in particular serves or is used, for adjusting one of the blades.
• the bearing surface and inner body of one or more of the bearings form a raceway that has the shape of a portion of a sphere or ball.
• the inner body of one or more of the bearings has a lateral surface in the form of a surface of revolution, which results from rotating a circular segment about a longitudinal and/or symmetry axis of the inner body.
• one or more of the bearings are designed such that they allow rotation of their inner body about a central point in at least two orthogonal directions.
• each inner body has an axial direction.
• a pin of a lever attached to the inner body engages the inner body, preferably in the axial direction; in a further development, the pin extends through the inner body.
• the lever is preferably connected to the inner body via the pin, but not rigidly, rather connected in such a way that the pin can slide within the inner body along the pin axis/inner body axis.
• the axial direction is a direction along a longitudinal and/or symmetry axis of the inner body.
• the longitudinal and/or symmetry axis of the inner body as defined in the present invention, is the aforementioned longitudinal and/or symmetry axis of the rotational or lateral surface of the inner body.
• tilting of the inner body comprises rotation about one or more axes transverse to its axial direction or longitudinal and/or symmetry axis, or yawing and/or pitching.
• an inner body mounted in the bearing surface so as to be tiltable relative to the adjusting ring is additionally rotatable about its longitudinal and/or symmetry axis or axial direction, or the bearing also allows the inner body to roll.
• a bearing surface associated with the adjusting ring is a bearing surface which, apart from any elastic deformations, in particular of a bearing shell described below, is not offset by at least two mutually perpendicular dimensions from the adjusting ring.
• Axles are rotatable or non-tiltable; in a further development, they are rotationally and/or axially fixed relative to the adjusting ring, particularly advantageously rotationally and axially fixed (“adjusting ring fixed”) or not movable at all.
• the inner body of one or more of the bearings (each) is tiltable, preferably only together with the lever attached thereto, or the inner body is not tiltable relative to the lever attached thereto.
• one or more of the bearing surfaces are integrally formed with the adjusting ring; in a further development, they are formed with the adjusting ring or are particularly advantageously manufactured in it by material removal, especially by machining.
• At least one of the bearing surfaces is formed by a bearing shell attached to, preferably in, the adjusting ring.
• the bearing surface of several bearings is formed by a bearing shell of this bearing attached to, preferably in, the adjusting ring.
• the bearing shell of one or more bearings is attached to or in the adjusting ring by a material-fit or friction-fit connection; in a further embodiment, it is pressed in.
• the bearing shell can be split or multi-part; in another embodiment, it has a locking mechanism that holds the inner body in the bearing shell only in its axial direction.
• the inner body of one or more of the bearings is positively secured to the bearing surface, in one embodiment in its axial direction or direction of its longitudinal or symmetry axis (as seen).
• the inner body of the bearing is inserted into its bearing surface and then tilted, in particular into a service position and/or for attaching the lever and/or transversely to its axial direction and/or by at least 45°, preferably by 90°, and thereby positively secured to the bearing surface, and subsequently one of the levers is attached to the inner body, or the bearing surface and inner body are designed such that the inner body can be inserted into the bearing surface and, after tilting, in particular into a service position and/or for attaching the lever and/or transversely to its axial direction and/or by at least 45°, preferably by 90°, is positively secured to the bearing surface.
• the adjusting ring arrangement has one or more levers, wherein the lever(s) is/are attached to the inner body of one of the bearings; in a further development, the shovel(s) adjustable by the lever(s), preferably attached to the respective lever, are also attached.
• An adjusting ring arrangement according to the invention is particularly suitable for adjusting blades, preferably guide vanes, of a turbine assembly and especially a compressor assembly of a gas turbine, in particular of an aircraft engine, due in particular to the possible more compact, stable and/or lighter construction.
• one of the levers is attached to the inner body of one or more of the bearings (each).
• a pin of the one- or multi-part lever is inserted into a blind hole or through opening of the inner body (displaceable in the axial direction of the pin).
• the bearing surface of one or more of the bearings (each) is formed integrally with the adjusting ring before the lever is attached; in a further development, material is removed; and in a further development, the inner body is then inserted into this bearing surface and tilted.
• the bearing shell of one or more of the bearings (each) is attached to, preferably inside, the adjusting ring.
• the lever is then attached to the inner body.
• Figs. 1-3 show an adjusting ring arrangement of a turbomachine according to an embodiment of the present invention
• Fig. 4 a step in manufacturing the adjusting ring arrangement according to an embodiment of the present invention.
• the adjusting ring arrangement comprises an adjusting ring 10 and a plurality of spherical and identical bearings distributed around its circumference, one of which is located in the Figs. 1-4 is shown.
• the bearings each have a bearing surface 11 on the adjusting ring side and an inner body 12 which is tiltable relative to the adjusting ring 10, into which a pin 21 of a lever 20 for adjusting a shovel 30 is or is attached, whereby the lever 20 is or is connected to the inner body 12.
• the bearing surfaces 11 are integrally formed with the adjusting ring 10.
• the bearing surfaces 11 are each formed by a bearing shell 13 fastened in the adjusting ring 10. Accordingly, the following is used for the execution of the Fig. 5, 6 based on the explanations of Figs. 1-3 Reference is made, whereby corresponding features are identified by identical reference symbols.
• the inner body 12 is in its axial direction (vertically in Fig. 1, 2 , 5, 6 ; horizontal in Fig. 4 ; perpendicular to the cutting plane in Fig. 3 ) positively secured to the respective storage surface 11.
• the inner body 12 of the Figs. 1-4 as in Fig. 4 shown inserted into storage area 11 and then into the Figs. 1-3
• the lever 20 is tilted in the shown operating position and thereby positively locked to the bearing surface 11, whereby the respective lever 20 is then connected to the inner body 12, in particular the pin 21 is inserted into the inner body 12.
• the bearing surface 11 and the inner body 12 are each designed such that the inner body 12 can be inserted into the bearing surface 11 (see figure).
• the bearing shell 13 can be pressed in, particularly with the inner body 12 already mounted.
• the bearing shell can be split or multi-part, or have a locking mechanism that holds the inner body 12 only in its axial direction within the bearing shell 13 (not shown).

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

Applications Claiming Priority (1)

Publications (1)

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ID=96345956

Family Applications (1)

Country Status (2)

Citations (11)

• 2024
  • 2024-07-12 DE DE102024002279.1A patent/DE102024002279A1/de active Pending
• 2025
  • 2025-07-14 EP EP25189311.1A patent/EP4678877A1/fr active Pending

Patent Citations (11)

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