Adjustment ring assembly for adjusting vanes of a turbomachine, turbomachine assembly, gas turbine, use of an adjustment ring assembly and method for producing an adjustment ring assembly

Abstract

The present invention relates to an adjusting ring arrangement for adjusting the blades of a turbomachine, wherein the adjusting ring arrangement comprises an adjusting ring (10) and a plurality of spherical bearings distributed around its circumference, each bearing having a bearing surface (11) associated with the adjusting ring and an inner body (12) tiltably mounted therein relative to the adjusting ring for attaching a lever (20) for adjusting one of the blades (30). The invention further relates to a turbomachine assembly, a gas turbine, the use of the adjusting ring arrangement, and a method for manufacturing the adjusting ring arrangement.

Description

[0001] 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.

[0002] 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.

[0003] This problem is solved by an adjusting ring arrangement with the features of claim 1, a turbomachine assembly with the features of claim 8, or a method with the features of claim 11. Claims 9 and 10 protect a gas turbine with at least one turbomachine assembly described herein, or the use of an adjusting ring arrangement described herein. The dependent claims relate to advantageous embodiments.

[0004] According to one embodiment of the present invention, 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.

[0005] In one embodiment, 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. In another embodiment, 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. In another embodiment, 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. In another embodiment, each inner body has an axial direction. In one embodiment, a pin of a lever attached to the inner body engages in 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 connected, rather connected in such a way that the pin can slide along the pin axis / inner body axis within the inner body. In one embodiment, the axial direction is a direction along a longitudinal and / or symmetry axis of the inner body. In one embodiment, 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. In one embodiment, tilting of the inner body comprises rotation about one or more axes transverse to its axial direction or longitudinal and / or symmetry axis, or yaw and / or pitch. In a particularly advantageous embodiment, an inner body mounted in the bearing surface so as to be tiltable relative to the adjusting ring is additionally rotatable (mounted) about its longitudinal and / or symmetry axis or axial direction.The bearing also allows the inner body to roll. This enables a particularly advantageous kinematic design, especially adjustable kinematics for adjusting the blades.

[0006] In one embodiment, a bearing surface associated with the adjusting ring, as defined in the present invention, is a bearing surface which, apart from any elastic deformations, particularly of a bearing shell described below, is not rotatable or tiltable about at least two mutually perpendicular axes relative to the adjusting ring. In another embodiment, it is rotationally and / or axially fixed relative to the adjusting ring, and particularly advantageously rotationally and axially fixed ("adjusting ring fixed") or not movable. In one embodiment, 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.

[0007] By dividing the spherical bearing(s) in such a way that the bearing surface and adjusting ring do not tilt relative to each other, a space- and weight-saving solution can be achieved, especially compared to a reversed division in which the (then lever-side) bearing surface tilts together with the lever relative to the adjusting ring, since the levers can be made smaller, while the adjusting ring already provides sufficient material for the necessary stiffness to accommodate the bearing shell(s).

[0008] In one embodiment, one or more of the bearing surfaces (each) 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.

[0009] This can advantageously save weight and / or material and / or assembly effort.

[0010] In one embodiment, at least one of the bearing surfaces is formed by a bearing shell attached to, preferably in, the adjusting ring. In a further embodiment, the bearing surface of several bearings is formed by a bearing shell of this bearing attached to, preferably in, the adjusting ring. In one embodiment, 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. In one embodiment, 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.

[0011] This allows for a particularly advantageous friction pairing between the bearing surface and the inner body and / or reduces the manufacturing effort of the adjusting ring.

[0012] In one embodiment, 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).

[0013] In a further development, 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.

[0014] This can advantageously save weight and / or assembly effort.

[0015] In one embodiment, 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.

[0016] 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.

[0017] To produce an adjusting ring arrangement described herein, according to one embodiment of the present invention, one of the levers is attached to the inner body of one or more of the bearings (each).

[0018] In one embodiment, in one or more of the bearings (each) in a further development, 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).

[0019] In one embodiment, 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.

[0020] In one embodiment, the bearing shell of one or more of the bearings (each) is attached to, preferably inside, the adjusting ring. In a further development, the lever is then attached to the inner body.

[0021] This allows for a particularly advantageous, especially simple, reliable and / or rapid assembly process.

[0022] Further advantageous embodiments of the present invention will become apparent from the dependent claims and the following description of preferred embodiments. The following is shown, in part schematically: Fig. 1: an adjusting ring arrangement of a turbomachine according to an embodiment of the present invention in a partial section; Fig. 2: a section along II-II in Fig. 1 ; Fig. 3: a section along III-III in Fig. 2 ; Fig. 4: the step into Fig. 2 corresponding view; Fig. 5: an adjusting ring arrangement of a turbomachine according to a further embodiment of the present invention in Fig. 2 corresponding view and; Fig. 6: the adjusting ring arrangement of the Fig. 6 in Fig. 1 corresponding view.

[0023] Fig. 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.

[0024] The adjusting ring assembly comprises an adjusting ring 10 and a plurality of spherical and identical bearings distributed around its circumference, one of which is located in the Fig. 1-4 is shown.

[0025] 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.

[0026] In the execution of the Fig. 1-4 The bearing surfaces 11 are integrally formed with the adjusting ring 10. In the identical version, except for the differences explained, in Fig. 5, 6 In the illustrated modification, 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 Fig. 1-3 Reference is made, whereby corresponding features are identified by identical reference symbols.

[0027] 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.

[0028] For this purpose, the inner body 12 of the Fig. 1-4 as in Fig. 4 shown, inserted into storage area 11 and then into the Fig. 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. Accordingly, 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). Fig. 4 with insertion arrow) and is positively locked to the bearing surface 11 after tilting (see Fig. 1, 2 after Fig. 4 before tipping over).

[0029] In the Fig. 5, 6 In the illustrated modification, the bearing shell 13 can be pressed in, particularly with the inner body 12 already mounted. In one embodiment, 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).

[0030] In the present disclosure, "has an X" does not generally imply an exhaustive list, but is a shorthand for "has at least one X" and also includes "has two or more X" as well as "has Y in addition to X". Although exemplary embodiments were explained in the preceding description, it should be noted that a multitude of variations are possible. Furthermore, it should be noted that the exemplary embodiments are merely examples and are not intended to limit the scope of protection, applications, or structure in any way.Rather, the preceding description provides the skilled person with a guide for implementing at least one exemplary embodiment, whereby various modifications, particularly with regard to the function and arrangement of the described components, can be made without leaving the scope of protection as defined by the claims and these equivalent combinations of features. Reference symbol list

[0031] 10 Adjusting ring 11 Bearing surface 12 Inner body 13 Bearing shell 20 Lever 21 Pin 30 Scoop

Claims

1. Adjustment ring arrangement for adjusting blades of a turbomachine, wherein the adjustment ring arrangement comprises an adjustment ring (10) and a plurality of spherical bearings distributed over its circumference, each bearing having a bearing surface (11) associated with the adjustment ring and an inner body (12) mounted therein so as to be tiltable relative to the adjustment ring for connecting to or receiving a lever (20) for adjusting one of the blades (30).

2. Adjusting ring arrangement according to claim 1, characterized by the fact that at least one of the bearing surfaces is integrally formed with the adjusting ring.

3. Adjusting ring arrangement according to one of the preceding claims, characterized by the fact that at least one of the bearing surfaces is formed by a bearing shell (13) attached to the adjusting ring.

4. Adjusting ring arrangement according to one of the preceding claims, characterized by the fact that In at least one of the bearings, the inner body is positively locked to the bearing surface.

5. Adjusting ring arrangement according to the preceding claim, characterized by the fact that In at least one of the bearings, the bearing surface and inner body are designed in such a way that the inner body can be inserted into the bearing surface and is positively locked to the bearing surface after tilting.

6. Adjusting ring arrangement according to one of the preceding claims, characterized by the fact that it has at least one lever (20) for adjusting one of the blades, which is attached to the inner body of one of the bearings.

7. Adjusting ring arrangement according to the preceding claim, characterized by the fact that it has a shovel (30) that can be adjusted by this lever.

8. Turbomachinery assembly, in particular compressor or turbine assembly of a gas turbine, comprising at least one adjusting ring arrangement according to one of the preceding claims.

9. Gas turbine comprising at least one turbomachine assembly according to the preceding claim.

10. Use of an adjusting ring arrangement according to one of the preceding claims in a turbomachine assembly according to claim 8 for adjusting blades of the turbomachine assembly.

11. Method for manufacturing an adjusting ring arrangement according to one of the preceding claims, wherein in at least one of the bearings one of the levers is attached to the inner body of this bearing.

12. Adjusting ring arrangement according to the preceding claim, characterized by the fact that In at least one of the bearings, the inner body is inserted into the bearing surface and then tilted, thereby securing it positively to the bearing surface, and then one of the levers is attached to the inner body.

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