WO2013087863A1

WO2013087863A1 - Turbomachine and method for the operation thereof

Info

Publication number: WO2013087863A1
Application number: PCT/EP2012/075594
Authority: WO
Inventors: Rosario Montante; Michael Schwarz; Norbert STOLLENWERK
Original assignee: Siemens Aktiengesellschaft
Priority date: 2011-12-16
Filing date: 2012-12-14
Publication date: 2013-06-20
Also published as: DE102011088820A1

Abstract

The invention relates to a turbomachine (10), comprising a first stationary blade row (14) having adjustable blades (16) and at least a second stationary blade row (18) having adjustable blades (20), wherein the first stationary blade row (14) and the at least second stationary blade row (18) are arranged one behind the other in the axial direction (12) and wherein a flow direction (22) of the flow medium can be changed by adjusting the blades (16, 20) of the first stationary blade row (14) and/or of the at least second stationary blade row (18). According to the invention, in order to achieve the widest possible driving range, minimal power consumption, and high efficiency, a blade adjustment of the first stationary blade row (14) and a blade adjustment of the at least second stationary blade row (18) are performed independently of each other.

Description

Turbomachine and method for operating such

The invention relates to a turbomachine, which can be traversed by a flow medium in an axial direction, with a first stationary blade row with adjustable blades and at least one second stationary blade row with adjustable blades, the first stationary blade row and the at least second stationary blade ^¬ row in axial Direction are arranged one behind the other and wherein by adjusting the blades of the first stationary blade row and / or the at least second stationary blade row a flow direction of the flow medium än ^¬ derbar and a method for operating such a turbomachine.

From the prior art it is known to use a plurality of blade rows of a multi-stage axial compressor to use an adjusting device for the entirety of the blade rows of the stages. Here, an adjustment of all blade rows is carried out at the same time and on the basis of the same adjustment law so on the same geometry of the adjusting device. The disadvantage here is that a respective Ver ^{¬ used} law represents a compromise for all operating conditions of the turbomachine.

From DE 600 20 441 T2 and US 7,413,401 B2 are Strö ^¬ flow machines known each having a first stationary blade row with adjustable blades, and at least a second, arranged feireihe in the axial direction downstream of the first stationary Schau- stationary blade row with adjustable blades , By adjusting the blades of the first stationary blade row and the at least two ^¬ th stationary blade row in these Strömungsma ^¬ machines, the flow directions of the flow medium can be changed.

It is an object of the present invention to provide a Strö ^¬ mung machine and a method in which Steps or rows of blades of the turbomachine in operation adapted to all operating conditions of the ^{turbomachine ¬} who can. This object is achieved by a Strö ^¬ tion machine with the features of claim 1 and a method having the features of claim 13.

The invention relates to a turbomachine of the kind initially mentioned inputs. It is suggested that a show ^¬ felverstellung the first stationary blade row, and a blade adjustment of the at least second stationary blade row done independently. The inventive design can be ensured that all existing stages or stationary blade rows of the turbomachine work together optimally. In addition, advantageous operating points of all stages in the map can be optimally assigned. This is particularly dependent on the setting of the first stationary blade row of the first stage or the inlet guide vane row. In addition, the assignment of the blade rows or the stages to each other at different speeds, inlet temperatures and / or gas conditions can be optimally designed. The flow machine can thus have the widest possible driving range. Furthermore, it leads to a minimum or low power consumption and / or to a better or high efficiency at the selected operating point over systems of the prior art.

A fluid machine according to the invention is here insbeson ^¬ particular each, by the skilled person for use deemed machine is, for example, a compressor having a first stage and at least one second stage, and in particular an axial compressor. Under a row of blades here is a

Leitschaufelreihe, such as an inlet guide row, a Ausgangsleitschaufelreihe or a Leitschaufelreihe a stage are understood. In the following text the term becomes Basically, it would also be conceivable that a blade displacement of a first group of at least two stationary blade rows and a blade displacement of a second group of at least two stationary blade rows are carried out independently of each other. It would also be possible to independently adjust from a first and / or second stationary blade row relative to a first and / or second group of at least two stationary blade rows. The ones described in the following text

Features and characteristics of the first and / or second stationary blade rows are also intended to be applicable to a group of blade rows having at least two stationary blade rows, without this being a particular limitation on the concepts, features, or properties.

One of the stationary blade rows is in particular a component of a stage of the turbomachine. In addition, a stage may include at least one row of blades (rotor blades) rotating with a shaft of a rotor of the turbomachine, whereby the stage preferably comprises a stator blade row of stationary or non-rotating guide vanes and a rotating blade row. In particular, the term "adjustable blades" defines a rotation of the blades or vanes about their own axis along a radial direction of the turbomachine

and / or understood with different Verstellgesetzen. The adjustment of the stationary blade rows can in this case after each, the expert considered applicable

Mechanism or with any means deemed appropriate by those skilled in the art. This can be the mechanism

and / or the means for adjusting for the first and the second stationary blade row to be operated or executed the same or different. The invention Verstel ^¬ ment of the blade rows can be used for operation control of the turbomachine. For structurally simple adjustment of the blades of a set are connected together and in particular mechanically coupled to one another and thus all be jointly and at the same ^¬ adjusted tig / similar. Furthermore, it is proposed that the first stationary blade row, and the at least second stationary blade row in each case have at least one Ver ^¬ actuator. Here, by a Verstellele ^¬ ment a component to be understood, which couples the blades of a blade row in the circumferential direction of the component with each other. The adjusting element can be any component that can be used by a person skilled in the art, such as, for example, a housing and / or an outer housing, which is designed to be rotatable and which, for. B. encloses the entire turbomachine. In principle, the adjusting element can also comprise a plurality of components and / or represent a coupling mechanism. Advantageously, the adjusting element is designed as a ring or adjusting ring which is arranged around the turbomachine and which connects all the blades of a row or mechanically couples them. If the term adjusting ring is used below to denote the adjusting element, this is not intended to restrict a broad understanding of the term adjusting element. The coupling of the Ver ^¬ adjusting element or ring with the blades takes place via at least one coupling element, such as a lever and / or a coupling joint. As a result, an adjustment means for blades of the stationary blade rows is advantageously adapted to the geometry of the turbomachine and / or the ^stages . In addition, a distance between two stationä ^¬ ren blade rows, between which a row of rotor blades is arranged arrival, installation space saving for the arrangement of the means of Verstellmit ^¬ or -ring utilized.

Furthermore, it is advantageous if the turbomachine has an adjusting device, whereby an adjustment can be made structurally simple. Advantageously, the adjusting element of the first stationary blade row and the adjusting of the at least second stationary blade row ^¬ are each a component of the adjustment device. Prefers the adjusting device has at least one actuator. By means of this actuator can be distributed at least one stationary blade row ^¬. The second row of blades and / or white ^¬ tere blade rows can be adjusted by the same actuator or by means of any other adjusting means. As a result, the adjustment can be reliably communicated. Advantageously, engages the at least one actuator at least during a Verstellens indirectly to the adjusting ring and the first stationary blade row and / or on the adjusting ring or on the at least second statio nary ^¬ blade row. Thus, it is possible to transmit an adjustment over long distances, for example by a radio link. In an alternative embodiment of the invention, the at least one actuator engages at least during an adjustment un ^¬ indirectly on the adjusting ring of the first stage and / or on the adjusting ring of at least the second stage. Due to the realization of the direct or direct contact between see the actuator and an adjustment or ring adjustment can take place particularly robust and effective.

It is also proposed that a ratio between the first stationary blade row and the at least one actuator and / or the at least second stationary blade row and the at least one actuator during operation of the turbomachine is adjustable. This is done for example by a time-shifted adjustment of the components to each other. As a result, it is possible in particular to use a component, installation effort and cost-saving universal actuator to set two rows of blades independently.

A particularly exact adjustment of the turbomachine can advantageously be achieved if a ratio between the adjustment of the first stationary blade row and / or the adjustment of the at least second stationary blade row is dependent on at least one operating parameter selected from the group consisting of a speed, a Win kelstellung a vane at least one stationary blade row, a flow, a pressure or a temperature. In this case, these parameters and / or parameter groups can be stored or programmed in a control unit of the turbomachine. Alternatively or additionally, these parameters and / or parameter groups can be varied in the characteristic field. In this case, a temperature can in particular also be an ambient temperature. An angular position of a stationary blade of a stationary blade row can here be, for example, the angular position of a guide blade of the first stationary blade row and / or a guide blade of the inlet guide blade row.

In addition, it is proposed that the at least first adjusting device comprises a universal actuator for the blade adjustment of the first stationary blade row, and the bucket ^¬ adjustment of the at least second stationary blade row. Thus, components, space, installation costs and costs can be saved. This can be done, for example, by means of a toothed wheel, which is displaceably arranged between two toothed rods of the same design, in order to drive the adjusting rings in time succession with corresponding external toothings. In an alternative embodiment of the invention, the at least first adjusting device has a first actuator for the blade adjustment of the first stationary blade row and at least one second actuator for the blade adjustment of the at least second stationary blade row. As a result, the adjustment of the individual rows of blades can be carried out independently of each other. The relative adjustment can thus be adjusted individually and each adjustment ver ^¬ represents the blade rows individually. In this case, the first actuator and the at least second actuator can function on the same principle or be of the same design, or they can function differently or be constructed. In this case, the actuator can function according to any principle that appears appropriate to the person skilled in the art. For this purpose, it can, for example, have a) a linear drive with cylinder / piston and rod, b) a belt or a chain, c) a toothed rod, d) a spindle or a worm. a) Linear drive (cylinder / piston and linkage)

A preferred further development consists in that the at least one adjustment device ^¬ at least one linkage includes up. As a result, the adjusting device can be realized with a low weight. The linkage is preferably a component of the first and or second actuator. In addition, the linkage is preferably hydraulic and / or pneumati ^¬ driven by a hydraulic or pneumatic cylinder with piston. In principle, the drive could also take place via a motor, such as a linear motor. Further, the linkage may have at least one joint for directional adjustment to a rotational or pivotal movement of the adjusting ring. Furthermore, the linkage engages a tab which is arranged or formed on the outer surface of the adjusting ^element . Alternatively, a connection of the linkage at one end of the linkage and preferably at both ends of the linkage or on the adjusting element and the piston of the hydrau ^¬ lik- or pneumatic cylinder be articulated. b) belt / chain

Alternatively, it is proposed that the at least one adjusting device for the adjustment has at least one belt. As a result, the adjustment can be made structurally simple and space-saving. The belt is preferably a Be ^¬ was part of the first and or second actuator. The belt could in principle also be a toothed belt or a chain. The belt is preferred over a drive wheel by a drive such as a motor (electric motor or stepper motor) or a hydraulic rotary actuator or the like, being driven ^¬. The belt may, for example, engage an outer surface of the adjusting element. c) toothed rod

Furthermore, it is alternatively proposed that the at least one adjusting device for adjusting comprises at least one toothed rod. d) spindle / worm

In addition, it is alternatively proposed that the at least one adjusting device for the adjustment has at least one spindle and / or one worm. As a result, a drive with a high load capacity can be provided.

The toothed rod and the spindle and / or the worm are driving elements and each is preferably a part of the first and / or second actuator. In addition, the toothed rod or the screw is preferably a gear with korrespon ^¬ dierendes toothing, in the case of the helical gear worm, by a drive, such as a motor (electric motor or stepper motor) or a hydraulic rotary drive, etc., driven. The spindle, however, can be driven di ^¬ rectly in its direction of rotation by a drive shaft of a drive. Furthermore, it is advantageous if the drive element can be brought into engagement with a corresponding toothing, in the case of the spindle and / or the helical gear worm, on the adjusting element. Thus ER follows the transfer structurally simple and also particularly quiet ^¬ arm in the screw and / or screw drive. The corresponding toothing or helical toothing can be arranged, for example, on the outer surface of the adjusting element, in particular formed, and thus represents an outer toothing. In addition, the toothing extends over a sector and / or a circumference of the adjusting element or ring. The toothing can either extend over the entire circumference of the adjusting element or ring or can be formed as a partial toothing over a sector of the circumference. In this case, an angular range of the toothing depends on a desired or required adjustment range of the blade row and / or on a length of the drive element. A preferred development is that the first stationary blade row is a Eintrittsleitschaufelreihe. In addition, the at least second stationary blade row is a row of guide blades of a stage of the turbomachine.

A method for operating a turbomachine is also proposed. The turbomachine is flowed through by a flow medium in an axial direction and has a first stationary blade row and at least one second stationary blade row arranged in the axial direction behind the first stationary blade row, wherein by adjusting blades of the first stationary blade row and / or the at least second stationary blade row Blade row a flow direction of the flow medium is changed. According to the inventive method are a

Blade adjustment of the first stationary blade row and a blade adjustment of the at least second stationary blade row set independently. The aspect according to the invention makes it possible to ensure that all existing blade rows or stages of the turbomachine work optimally together. Furthermore, advantageous operating points of all stages in the map can be assigned optimal. This is particularly dependent on the setting of the first stationary blade row of the first stage or the inlet guide vane row. In addition, the assignment of the blade rows or stages to each other at different speeds, inlet temperatures and / or gas conditions can be optimally designed. The turbomachine can thus have the widest possible driving range. Of

Furthermore, it leads to a minimum or low power consumption and a better and high efficiency in the ge ^¬ selected operating point compared to systems of the prior Tech ^¬ technology.

Advantageously, the method has at least the following

Steps of: determining an actual value of at least one of Be ^¬ operating parameters; Determining a target value of the operating rameters by comparing the actual value with at least ei ^¬ nem deposited operating point in a map of operating parameters; and adjusting the first stationary

Blade row and the at least second stationary blade row independently of each other due to the determined setpoint value of the operating parameter. As a result, the adjustment can be advantageously adapted to an actual state of the turbomachine. An actual value represents here, for example, a delivery rate or a final pressure.

Advantageously, the first stationary blade row and / or the at least second stationary blade row are currency ^¬ rend an operation of the turbomachine, preferably inde ^¬ gig from each other, adjusted, whereby it can be very quickly respond to status changes, such as temperature, pressure and / or flow rate fluctuations , whereby the turbomachine can be operated safely.

The above-described characteristics, features and advantages of this invention, as well as the manner in which they are achieved, will become clearer and more clearly understood in connection with the following description of the embodiments, which will be described in more detail in conjunction with the drawings.

1 shows a turbomachine according to the invention with five

Stages in a schematic representation, Figure 2 shows a portion of two stages of the turbomachine of FIG 1 with one adjustment element and depending on an actuator in a detail view, FIG 3 an adjusting element of Figure 2 with a pneumati ^¬ rule drive,

4 shows an alternative adjusting element with a belt ^¬ drive, 5 shows a second alternative adjusting element with a

Drive with a toothed rod and a corres ^¬ exploding toothing on the adjusting ring,

6 shows a third alternative adjusting element with a

Drive with a spindle and a ^{korrespondie ¬} ing helical gearing on the adjusting ring and

7 shows an alternative adjusting device with a universal actuator for driving two Verstellele ^¬ elements.

1 shows a flow machine 10 according to the invention, formed from ^¬ as a five-stage axial compressor 62. The turbomachine 10 is in an operation in an axial direction 12 by a flow medium, such as air, flows through. In addition, the turbomachine 10 has a first stage 56, a second stage 58 and further stages 60, 60 ', which are arranged one behind the other in the axial direction 12 (by way of example only two further stages are provided with reference numerals). Furthermore, all stages 56, 58, 60, 60 'each have a stationary blade row 18, 64 in the form ei ^¬ ner of guide vanes 54 with vanes 66 on. In the axial direction 12 before the first stage 56, a first blade ^¬ is row 14 with vanes 34, in the form of guide vanes 38 with an inlet guide vanes 36 of a Eintrittleit- apparatus 52 is disposed.

The rows of blades 14, 18, 64 each have adjustable blades 16, 20, 70 attached to the housing 68 or, alternatively, adjustable blades 16, 20, 70 attached to a blade carrier (not shown). During the adjustment, the blades 16, 20, 70 are rotated about their own axis, running along a radial direction 72 of the turbomachine 10. In addition, the blades 16, 20, 70 are arranged one behind the other in the circumferential direction 74 in a manner known to those skilled in the art (only one blade 16, 20, 70 is shown per blade row 14, 18, 64). In principle, the blades 16, 20, 70 could alternatively or additionally be arranged on an end plate, not shown. By means of the blade rows 14, 18, 64 can each one flow direction 22 of the flow medium geän ^¬ changed. Furthermore, all stages 56, 58, 60, 60 'each have a rotating blade row, in the form of a moving show ^¬ felreihe 76, which are arranged in the axial direction 12 before each of the respective blade row 18, 64 and guide vane row 54th The blade row 76 of the first stage 56 is disposed axially between the inlet blade row 38 and the stationary blade row 18 of the first stage 56. The turbomachine 10 has an adjusting device 28, by means of which the rows of blades 14, 18, 64 of the inlet ^¬ guide apparatus 52 and the stages 56, 58, 60, 60 'adjusted ^¬ who can. For the inlet guide 52 and each of the Stu ^¬ fen 56, 58, 60, 60 ', the adjusting device 28 each have an actuator which mediates an adjustment of the stationary blade rows 14, 18, 64. This is shown in FIG 2 exemplary ^¬ for the actuators 30, 32 of the first and second stationary blade row 14, 18. However, the following descrip ^¬ bung also applies to the rows of blades 64. tion to interaction with the actuator 30, 32, 14, the first stationary shop ^¬ felreihe and the second stationary blade row 18, depending weils ^¬ on an adjusting element 24, 26, as a Adjustment ^¬ ring is executed. In the following, the term adjusting ^¬ ring is used to designate the adjusting element with the reference numerals 24 and 26. The adjusting rings 24, 26 are fitted in a circumferential groove 74 in the housing 68 extending in the circumferential direction. By means of the adjusting ring 24, 26, the blades 16, 20 of the blade rows 14, 18 in the circumferential direction of the adjusting ring 24, 26 mechanically coupled together. In addition, the adjusting ring 24, 26 each have a coupling unit 78, comprising a lever and a coupling joint, connected to the stationary blade row 14, 18.

The first actuator 30 engages the blade adjustment directly on the adjusting ring 24 of the first stationary blade row 14 and the second actuator 32 engages for the blade adjustment ^¬ directly on the adjusting ring 26 of the second stationary blade row 18 respectively. The actuators 30, 32 are each Weil individually and independently operable, whereby a blade adjustment of the first stationary blade row 14 and a blade adjustment of the second stationary blade row 18 are independent of each other.

By means of the adjustment can be adjusted during operation of the machine 10 Strö ^¬ mung a translation between the stationary blade row 14 and the actuator 30 and the statio nary ^¬ blade row 18 and the actuator 32nd In addition, the ratio between the adjustment of the first stationary blade row 14 and the adjustment of the second stationary blade row 18 is dependent on at least one operating parameter of the turbomachine 10. This can be, for example, a rotational speed, an angular position of a guide vane 66 of a vane row 54, an angular position a guide vane 34 of the ers ^¬ th stationary blade row 14, an angular position of the vane 36 of the Eintrittsleitschaufelreihe 38, a Volu ^¬ volume flow, a pressure or a temperature, such as ambient temperature be.

3 shows a possible embodiment of an actuator, wherein the first actuator 30 of the adjusting device 28 is shown here by way of example. The actuator 30 is formed as a rod 40 of ^¬ , which engages with one end 80 on a tab 82 which is integrally formed on an outer surface 84 of the adjusting ring 24. The linkage 40 is connected to the end 80 gegenüberlie ^¬ ing end 86 with a guided in a control cylinder 88 piston 90 by means of which the linkage 40 is hydraulically or pneumatically driven. In addition, the linkage 40 has a hinge 92, by means of which a rotational and / or Schwenkbe ^¬ movement 94 of the adjusting ring 24 can be taught. Alternatively, a connection of the linkage at one end of its running preferably on both ends of the rod or on the adjusting ring and the piston of the hydraulic or pneumatic cylinder articulated Ge ^¬ stänges and (not shown).

According to a method for operating the turbomachine 10, the blade displacement of the first stationary blade can be adjusted. row 14 and the blade adjustment of the second stationary blade row 18 are set independently. In addition, the first and second stationary blade rows 14, 18 can be adjusted during operation of the turbomachine 10. Here, at least one operating parameter is determined in the first step an actual value, this may be at ^¬ game as a discharge or a discharge pressure. In a subsequent, second step, a target value of the operating parameters Be ^¬ by comparing the actual value is with zumin- least one stored operating point in a map of operating parameters determined. In the last step, the stationary blade row are then 14, and the stationary blade row 18 are independently ^¬ basis of the determined desired value of the operating parameter adjusted.

FIGS. 4 to 7 show alternative exemplary embodiments of the adjusting device 28. Substantially unchanged components, features and functions are the same grundsätz ^¬ Lich labeled with the same reference numerals. However, to distinguish between the exemplary embodiments of FIGS. 4 to 7 and those in FIGS. 1 to 3, the letters a to d are added to the reference numerals of the components deviating from one another in the exemplary embodiments of FIGS. 4 to 7. The following description is essentially limited to the differences from the exemplary embodiment in FIGS. 1 to 3, wherein reference can be made to the description of the exemplary embodiment in FIGS. 1 to 3 with regard to components, features and functions remaining the same. The exemplary embodiment of FIG. 4 differs from that of FIGS. 1 to 3 in that an actuator 30 of an adjusting device 28a for the adjustment of a belt 42 is formed. The belt 42 abuts an outer surface 84a of a Ver ^¬ collar 24a and is driven by a drive wheel 96 by a drive 98, in the form of a stepping motor or a Hyd ^¬ raulik rotary drive. The exemplary embodiment of FIG. 5 differs from that of FIGS. 1 to 3 in that an actuator 30 of an adjusting device 28b for the adjustment of a drive element and / or a toothed rod 44 with a toothing 100 is formed. To the interaction of the toothed rod 44 with a

Adjusting ring 24b, this has a toothing to the teeth 100 of the toothed rack 44 corresponding toothing 46. The teeth 46, 100 are engaged with each other during the adjustment. The toothing 46 is integrally formed on an outer surface 84b of the adjusting ring 24b and thus forms an external toothing ^¬ . The toothing 46 extends over a sector 102 of approximately 180 ° of a circumference 104 of the adjusting ring 24b in the direction of the toothed linkage 44. In principle, an angular range of the toothing 46 depends on a desired or required adjustment range of the blade row 14. The toothed rod 44 is at de adjustment by means of a gear 106 with corresponding teeth 108 by a drive 98, for example in the form of a motor, ^¬ driven.

Alternatively, it would also be possible to adjust an adjusting ring via a toothed rod, which is driven according to Figure 5 and according to the embodiment of Figure 3 is hinged to the adjusting ring (not shown).

The exemplary embodiment of FIG. 6 differs from that of FIGS. 1 to 3 in that an actuator 30 of an adjusting device 28c for the adjustment of a drive element and / or a spindle 48 with a helical toothing 110 is formed. For interaction of the spindle 48 with an adjusting ring 24c, this has a corresponding to the helical teeth 110 of the spindle 48 helical teeth 50. The helical gears 50, 110 are engaged with each other during the adjustment. With regard to the configuration and the arrangement of the helical toothing 50, reference is made to the statements relating to the exemplary embodiment of FIG. A drive of the spindle 48 takes place directly via a drive axle 112 of the drive ^¬ 98. Alternatively, could also not shown here Transmission gear between spindle 48 and drive 98 a set ^¬ . In principle, the spindle 48 could also be formed by a worm, in this case the drive takes place via a helical gearing acting on the worm (not shown).

The exemplary embodiment of FIG. 7 differs from that of FIGS. 1 to 3 in that an adjusting device 28d has a universal actuator 30d for the blade adjustment of the first stationary blade row 14 and the blade ^{displacement of} the second stationary blade row 18. In this case, the actuator 30d is formed by a toothed wheel 114 with a toothing (not shown in detail), which mediates an adjustment of the first and the second adjusting ring 24d, 26d via two toothed linkages 44d, 44d '. For this purpose, the Zahnge ^¬ rods 44d, 44d 'gear teeth not shown in detail, which are brought in an adjustment with a toothing 46d, 46d' of the adjusting rings 24d, 26d in engagement or stand. To impart different translations by means of the universal actuator 30d, the gear 114 is moved between two positions I, II, the gear 114 interacting with the adjusting ring 24d in the first position I and with the adjusting ring 26d in the second position II. By the two positions I, II, the blade adjustment of the first stationary blade row 14 and the second stationary blade row 18 can be set in chronological succession and independently of each other.

Although the invention has been further illustrated and described in detail by the preferred embodiments, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.

Claims

claims

1. Turbomachine (10), which can be flowed through by a flow medium in an axial direction (12), with a first stationary blade row (14) with adjustable blades (16) and at least one second stationary blade row (18) with adjustable blades (FIG. 20), wherein the first stationary blade row (14) and the at least second stationary ^¬ blade row (18) in the axial direction (12) are arranged one behind the other and wherein by adjusting the show ^¬ blades (16, 20) of the first stationary blade row (14) and the at least second stationary blade row (18) a flow direction (22) of the flow medium is changeable, characterized with

a universal actuator (30d) for the blade adjustment of the first stationary blade row (14) and the second stationary blade row (18), wherein the blade adjustment of the first stationary blade row (14) and the blade ^¬ adjustment of the at least second stationary blade row (18) separated in time and with different Verstellge ^¬ set feasible.

2. Turbomachine according to claim 1,

characterized in that the first stationary blade row (14) and the at least second stationary blade row (18) each have at least one adjusting element (24a-d, 26a-d).

3. Turbomachine according to claim 2,

characterized by at least one adjusting device (28, 28d), which has at least the actuator (30, 30d; 32), wherein the actuator (30, 30d; 32), at least during an adjustment, indirectly and / or directly on the adjusting element (24, 24d ) of the first stationary blade row (14) or on the adjusting element (26, 26d) of the at least second stationary blade row (18).

4. Turbomachine according to claim 3,

characterized in that the at least one Versteilvor ^¬ direction (28) has at least one linkage (40).

5. Turbomachine according to claim 3,

characterized in that the at least one Versteilvor ^¬ direction (28a) for adjusting at least one belt (42).

6. Turbomachine according to claim 3,

characterized in that the at least one Versteilvor ^¬ direction (28b, 28d) for adjusting at least one Zahnge ^¬ rod (44, 44d, 44d '), which with a korrespondie ^¬ ing toothing (46, 46d, 46d') on the adjustment (24b, 24d, 26b, 26d) is engageable.

7. Turbomachine according to claim 3,

characterized in that the at least one Versteilvor ^¬ direction (28c) for adjusting at least one spindle (48) and / or a worm, which is engageable with a korrespondie ^¬ generating helical teeth (50) on the adjusting element (24c, 26c) into engagement ,

8. Turbomachine according to one of the preceding claims,

characterized in that the first stationary blade row ^¬ (14) is a Eintrittsleitschaufelreihe (36) of a ^¬ trittleitapparats (52).

9. flow machine according to Ansprü ^¬ che,

characterized in that the at least second stationary blade row (18, 64) is a guide vane row (54) of a Stu ^¬ fe (56, 58, 60, 60 ') of the turbomachine (10).

10. A method for operating a turbomachine (10), according to at least one of claims 1 to 9, with the first statio ^¬ nary blade row (14) and at least in the axial direction (12) behind the first stationary blade row (14) arranged second stationary Blade row (18 and with the universal actuator (30d) for the blade adjustment of the first stationary blade row (14) and the second stationary blade row (18)

characterized in that using the universal actuator, the blade adjustment of the first stationary

Blade row (14) and the blade adjustment of the at least second stationary blade row (18) are separated in time and adjusted with different Verstellgesetzen.

11. The method of claim 10, comprising at least the fol ^¬ ing steps:

- determining an actual value of at least one Betriebspa ^¬ rameters;

Operating parameters determining a target value of the operating parameter by means of comparing the actual value with at least one stored operating point in a map of Be ^¬ -;

- Adjusting the first stationary blade row (14) and the at least second stationary blade row (18) separated in time and with different Verstellgesetzen due to the determined desired value of the operating parameter.

12. The method according to claim 10 or 11,

characterized in that the first stationary blade ^¬ row (14) and the at least second stationary blade row (18) during an operation of the turbomachine (10) time ^¬ lich separated and adjusted with different Verstellgesetzen.