EP2643556A1

EP2643556A1 - Coupled outlet vane device/angular adjustment

Info

Publication number: EP2643556A1
Application number: EP12702515.3A
Authority: EP
Inventors: Jan Weule
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2011-02-02
Filing date: 2012-02-02
Publication date: 2013-10-02
Anticipated expiration: 2032-02-02
Also published as: EP2643556B1; WO2012104366A1; US20130315717A1; DE102011003522B4; DE102011003522A1; CN103380269A

Abstract

The invention relates to a device for adjusting the angle of vanes of an outlet vane device of a compressor and to a method for assembling such a device. The device comprises multiple angularly adjustable vanes (11), each of which is mounted on a shaft (12) in a housing (101). Each shaft (12) has an (adjusting) lever (15) which is guided using a slotted guide (24), said slotted guides (24) being arranged on an adjusting ring (23) such that the angle of the vanes (11) can be adjusted upon adjusting the adjusting ring (23). During the assembly of the device into the housing (101) of the compressor (100) such that the angular adjustment of the outlet vane device (102) is coupled to an inlet vane device (103) of the compressor (100), the vanes (11) are first mounted onto the respective shaft (12), rollers (13) are mounted on the respective (adjusting) lever (15), the slotted guides (24) are mounted onto the adjusting ring (23), and the adjusting ring (23) is mounted onto the inlet vane device (103). The shafts (12) are mounted in the housing (101), and the (adjusting) levers (15) are mounted onto the respective shaft (12). The inlet vane device (103) is then mounted into the housing (101), said rollers (13) being introduced into the respective slotted guide (24), whereby the angular adjustment is coupled.

Description

description

The invention relates to a device for angular adjustment of blades of an outlet guide of a compressor and to a method for assembling such a device for angle adjustment. Compressors or fluid compressing devices are used in various industries for various applications involving compression or compression of fluids, especially (process) gases. Well-known examples of this are turbo compressors in mobile

industrial applications, such as in exhaust gas turbochargers or in jet engines, or even in stationary industrial applications, such as transmission turbo compressors for a Luftzerlegung. In such a - in his way of working continuously - turbo compressor is the pressure increase

(Compression) of the fluid caused by an angular momentum of the fluid from entry to exit by a rotating, radially extending blades having impeller

Turbo compressor is increased by the rotation of the blades. Here, i. In such a compressor stage, pressure and temperature of the fluid increase, while the relative

(Flow) speed of the fluid in the impeller drops. In order to achieve the highest possible pressure increase or compression of the fluid, several such compressor stages can

be switched one behind the other.

As types of turbocompressors, a distinction is made between radial and axial compressors.

In the axial compressor, the fluid to be compressed, for example a process gas, flows in a direction parallel to the axis (axial direction) through the compressor. In which Radial compressor flows the gas axially into the impeller of the compressor stage and then becomes outward (radial,

Radial direction) deflected. With multistage centrifugal compressors, this means there is a flow deflection behind each stage

necessary.

Combined types of axial and radial compressors draw large volume flows with their axial stages, which are compressed to high pressures in the subsequent radial stages.

While mostly single-shaft machines are used, gear compressor compressors, the individual compressor stages are grouped around a large wheel, with several parallel shafts, each carrying one or two - recorded in spiral housings - wheels are driven by a large drive gear, a large wheel.

To optimize the flow control through the compressor or by a compressor stage and thus to optimize the performance of the compressor or the compressor stage, it is also known, the impeller inlet Einleitleitat (shortly below ELA) and / or the impeller one

Downstream of the outlet nozzle (in the following ALA).

Such a gear compressor, a gear turbo compressor from Siemens called STC-GC, used for the air decomposition, is out

http: // www. energy. Siemens. com / hq / en / compaction-expansion-ventilation / turbo-compressor / gearbox turbo-compressor / stc- gc.htm (available on 10.01.2011).

Furthermore, it is known that in a transmission compressor, for example for the air separation, usually a large driving range in a map of the compressor in the direction of smaller volume flows at almost constant pressure (turn-down driving range) is required. If these transmission compressors were designed for a final pressure that corresponds to the required final pressure at the operating points, the turn-down driving range would be too small. Therefore, gear compressor are usually designed for a higher final pressure, so that the map (usually swirl Kenn ^¬ field) at the required final pressure of the operating points has a required width.

However, then lie the operating points of the

Gear compressor relatively far away from the maximum efficiency, which is usually close to the internal

Auslegepunktes lies.

A possible improvement could be achieved if in the map a flatter pump boundary line curve, and thus the necessary map width could be achieved with higher efficiency.

In order to influence the characteristic map, it is known to change the angle of attack of blades of an outlet guide apparatus, in the following referred to as outlet guide vanes.

Such influence on the flow pattern after the impeller of a compressor or a compressor stage must be limited to a flow guide in front of the impeller, i. in the

Eingangsleitapparat be tuned, what a coordinated or combined adjustment of entrance and

Exit guide is required.

A backdrop is one used in mechanical engineering

Transmission element for power transmission (link guide).

The gate has a slot, web or a groove in / on which a sliding block is forcibly guided on both sides to a movement of the backdrop in a movement of the

Implementing Kulissenstein. A transfer function (also coupling function) of the slotted guide is the course of the guide, ie by the course of the slot, ridge or the groove, determined and is free within wide limits

selectable. The slide guide is especially for

Implementation of complex transfer functions used. The invention is based on the object, a device for angular adjustment of blades of a

Specify Austrittsleitapparats a compressor, which improves the disadvantages of the prior art, easy and inexpensive to implement and also simple and

inexpensive to install or in a compressor or

a compressor stage is to install.

The object is achieved by the device for adjusting the angle of blades of a discharge guide of a compressor and by the method for mounting such

Device with the features according to the respective

independent claim solved.

The device for angular adjustment of blades of a discharge nozzle of a compressor comprises several

(Angle) adjustable blades, which are each mounted on a shaft in a housing, in particular in a spiral housing. The shafts each have a (adjustment) lever or are each connected to a (adjusting) lever, which is guided using a link - in particular via the (adjustment) levers mounted and guided in the scenes roles.

The scenes are in turn on a collar (also in

Following backdrop holder) arranged or with a

Adjusting ring or gate holder connected. When adjusting this collar so can the

Shovels or the (inflow) angles of the blades - adjust according to the realized through the scenery Verstellmimik - whereby the flow of the blades changed and influence on the map of the compressor can be taken.

When mounting this device in the housing of the

Compressor - and coupling the angle adjustment of the Austrittsleitapparats (ALA) with a Eintrittsleitapparat (ELA) or with an angular adjustment of blades of the inlet guide of the compressor - are first the blades of the Austrittleitapparats on the respective shaft, rollers on the respective (adjustment) lever and the scenes on the collar - and the collar to the

Eintrittsleitapparat mounted.

The shafts are mounted in the housing and the (adjustment) levers are mounted on the shafts.

Thereafter, the Eintrittsleitapparat is mounted in / on the housing, the rollers in the respective backdrop

introduced, whereby the coupling of the angle adjustment of ALA and ELA is realized.

Preferred developments of the invention will become apparent from the dependent claims. A particular advantage of the invention is that it realizes a very simple, inexpensive and flexible and highly efficient adjustment mechanism for the blades of the ALA, which moreover, via coupling of the adjusting ring with the ELA or with the adjustment mechanism of the ELA to the ELA Adjustment - by means of an ELA adjustment cylinder - can be connected (combined ELA-ALA (angle) adjustment) - and thus requires no separate, separate drive for adjustment. A combined, mutually tunable ELA-ALA angle adjustment and thus a desired influence on the characteristic map of the compressor (to optimize this

Performance) becomes possible. In addition, it proves to be advantageous that such a combined ELA-ALA adjustment mechanism within the

Housing, invisible from the outside can be arranged. By means of a flexible design of the link or the link guide, by means of simple machining methods,

For example, by machining a groove or slot in the backdrop and / or an orientation of the scenery on the collar, can be any

Coupling functions or Verstellmimiken - for the

combined angle adjustment - realize.

Thus it can be provided in a preferred embodiment that the slotted guide is designed as a slot, web or groove in / on the backdrop. Preference can continue here

be provided that as in the backdrop guided element - on the (adjustment) lever mounted - roller is used. Particularly preferably, it can be provided to introduce a, in particular straight, groove in the gate by machining, in which then the guided element or the roller is guided or moved.

In such straight grooves or slots is the

Making simple, but the coupling from ELA angle to ALA angle (combined ELA-ALA adjustment) still

Subjected to trigonometric functions. By appropriate

Processing, e.g. by milling, of guide surfaces or of rolling surfaces (guided in scenes roles as guided elements) in / on the backdrop can almost any

Coupling functions are implemented.

Simple, linear coupling functions, such as ramps or

Sawtooth profiles with arbitrary gradients or

"Translations" as well as complex, non-linear couplings can be realized in this way.

So it is also possible, for example, by incorporating a surface, the neutral (90 °) to Abrollkreis a in the The role played by the role is to decouple the combined ELA-ALA adjustment in the desired angular ranges of the ELA (in some areas decoupling or dead gear). In a preferred embodiment, it is provided that the link via one or more Exzentereinheiten,

For example, consisting of an eccentric with

Eccentric bolt, clamping and adjusting screw, in particular via two eccentric units, is bolted to the adjusting ring. Such screwing the backdrop with the collar by one or by the two or more

Exzentereinheiten allows a simple and flexible

Alignment of the scenery on the collar - and thus

Influence on the coupling function. For this purpose, it can also be provided that - by appropriate design of, for example, the housing or other elements with

Access opening or the like, the adjustment even when mounted, e.g. virtually closed spiral housing, can be done.

In a preferred embodiment, it is provided that

Verstellmimik or the adjustment mechanism by appropriate design and / or orientation of the backdrop in such a way

adjust that an angular reduction in the

combined ELA-ALA angle adjustment is realized. That is, a greater angular displacement of the ELA blade results in a smaller angular displacement in the ALA blade.

For example, the adjustment facial expressions can be adjusted in this way, e.g. by a correspondingly aligned ramp as a slotted guide that leads an ELA angle adjustment of 60 ° to an ALA angle adjustment of 45 °.

In addition, the invention proves with their

Adjustment mechanism according to the invention have the advantage that they in the direction of force ALA -> ELA or against the

Adjustment direction ELA -> ALA (ie an adjustment of the ELA blades is effected by means of the adjusting mechanism realized coupling and the adjustment of ALA Schaufein), in particular in the range of a realized reduction, is self-locking. Thus, an additional clamping of the mechanism is unnecessary, which simplifies the construction of a combined angle adjustment accordingly.

Also, the invention allows, in particular by its simple, constructive structure, the use or the

Use of commercial sliding and rolling bearings for storage in the invention of moving elements.

Thus, in a preferred embodiment, the (adjusting) lever can be guided by using a roller arranged on the (adjusting) lever in / on the link. This role may according to another preferred embodiment by means of a plain bearing bush and a threaded pin on the (adjustment) lever attached or stored - and under

Use one or more retaining rings secured.

By using such bearing elements, it is possible to obtain a friction component on the blade adjustment, in particular the combined blade adjustment,

Minimize drive power to be applied. Also, the invention thereby enables, i. through the use of such conventional bearing elements, a cost-effective design of the WinkelVerstellung.

Furthermore, it proves to be advantageous in the invention, the components of the invention, such as the (adjustment) lever and / or the scenery, as small and / or simple turning and milling parts can be performed, the no further

Make demands on a common processing.

Also, the invention is identical for left and

clockwise rotating compressor used. Furthermore, it proves to be an advantage of the invention that it depends on both the number of blades of the ELA and the number of blades of the ALA independent and thus flexible usable or usable.

In a preferred embodiment, it is provided that the adjusting ring by connection with an adjusting element of the ELA, for example with a collar of the ELA or with the

Adjustment ring for the ELA blade is connected. The

Angle adjustment of the ELA blade - by rotation of the ELA adjusting ring - thus leads to (coupled or

combined) angle adjustment in the ALA blade.

In a further preferred embodiment it can be provided that the attachment of the blade to the shaft is carried out using a sleeve, wherein the blade, the sleeve and the shaft via one or more pins, in particular a threaded pin and / or a dowel pin in the axial Direction can be held together.

From a strength standpoint, this connection is from blade to shaft, i. attaching the bucket to the shaft, a critical area. In the operation of the compressor is the

Blading directly with the fluid to be delivered in

Touch, as this affects the influence on the

Flow direction should be taken. This is the result

Blading or are the blades but also occurring flow surges and vibrations or corresponding

Loads, especially at the limits of the driving range exposed. In order to take these loads into account, the connection between the blade and the shaft can be massively carried out via the (blade) sleeve. In a particularly preferred

Embodiment is provided that the blade, the sleeve and the shaft are held together by a central threaded pin in the axial direction. The bucket, the sleeve and the shaft can then be pinned together. By the pins in the blade and the sleeve is

at the same time releasing the central threaded pin locked out. When fully assembled, all pins can be connected to the front of adjacent components, so that a release in the operating state is excluded. In the invention further proves to be particularly advantageous that it is divisible and thus easy to install. So is a divisibility of the device to a

Joint between the (adjustment) lever and the

Setting, in particular between a (adjusting) lever arranged roller and the scenery executed. In the

Mounting the inlet guide can be mounted in / on the housing so that the rollers are inserted into the respective backdrop. Under certain circumstances, this divisibility may also be possible, especially with large volute casings.

In a preferred embodiment, it may be provided for this purpose that the slide and / or the roller arranged on the (adjustment) lever form a mounting bevel, in particular as

Threading aid, have / has.

In a further preferred embodiment of the

Compressor a gear compressor, in particular a

multi-stage gear compressor, here the

Angular adjustment according to the invention can be realized in one or more stages of this transmission compressor. The compressor or the multi-stage gear compressor can preferably be used for air separation.

Of particular advantage in the invention proves that this also for use in large volute casings of

Compressors, in particular transmission compressors, or

Compressor stages is suitable. Previously known constructions of blade angle adjustments were for small ones

Spiral housing provided, since here a spiral insert within the spiral housing is used and thus a

Adjustment mechanism well integrated and divisible for assembly is. Now, the invention also allows the use of an angle adjustment for large volute casings.

Furthermore, the invention allows an increase of

Efficiency of a compressor designed according to the invention in performance highly rated

Operating points that lie in the partial and / or overload range in the swirl characteristic map of the compressor. In particular, here proves in the invention of great advantage that improved by the realized Winkelverstellbarkeit the driving range of, in particular multi-stage, compressors or

can be extended.

In figures is an embodiment of the invention

illustrated, which will be explained in more detail below.

Show it

1 shows a sketch of a volute casing of a compressor stage of a transmission compressor;

2 shows a sketch of a section through the spiral housing after

1 with a combined Australsleitapparat (ALA) / Eintrittsleitapparat (ELA) -angle adjustment;

3 shows a sketch of a further section through the

Spiral housing according to FIG. 1 with the combined ALA-ELA angle adjustment;

4 shows a sketch of a section through the sectional drawing of FIG. 3 with a sliding mechanism of the combined ALA-ELA angle adjustment;

5 shows a sketch of a further section through the

Spiral housing according to FIG. 1 with the combined ALA-ELA angle adjustment;

6 shows a sketch of a further section through the Spiral housing according to FIG 1 with an eccentric unit for screwing the backdrop with a

Backing clip (ALA collar) of the combined ALA-ELA angle creation, ·

7 shows a sketch of a blade-shaft (adjustment) lever unit of the combined ALA-ELA angle adjustment;

FIG 8 sketch of a screw connection of the blade with the

Shaft of the blade-shaft (adjustment) lever unit of FIG 7;

FIG 9 sketch of an attachment of the (adjusting) lever on the shaft and a bearing of the roller on the (adjustment) lever of the blade-shaft (adjustment)

Lever unit according to FIG. 7

Embodiment: Coupled or combined

Exit nozzle (ALA) / inlet guide (ELA) - Angle adjustment of a compressor stage with spiral housing (with assembly procedure)

(a) Construction FIG. 1 shows a volute casing 101 of a compressor stage 100 of a multi-shaft gear compressor for air decomposition.

This compressor stage 100 initially has the usual structure of a compressor housing 100 arranged in a spiral housing 101 with an impeller, an inlet guide apparatus (ELA) 103 upstream of the impeller and an impeller

Downstream Austrittsleitapparat (ALA) 103 on.

However, in this compressor stage 100 is a

Angle adjustment of blades of the ELA 29 with a

Angle adjustment of blades of the ALA 11 via a

Adjustment mechanism 4 or Verstellmimik coupled. In the following FIGS. 2 to 9, further details of this adjustment mechanism 4 accommodated in the spiral housing 101 are shown.

Adjustable facial expression, i. the coupled outlet diffuser (ALA) / inlet diffuser (ELA) angle adjustment,

shown.

In order to enable the angular displacement or rotation of ALA vanes 11, each of these ALA vanes 11 is mounted on a single shaft 12 in the spiral housing 101 (FIGS. 2, 3, 5, 7 to 9).

From a strength standpoint, this connection is from ALA blade 11 to shaft 12 (FIGS. 7 and 8), i. the attachment of the ALA blade 11 to the shaft 12, a critical area. in the

Operation of the compressor, this blading 1 is directly in contact with the fluid to be delivered. This is the result

Blade 1 or are the ALA-Schaufein 11 occurring flow surges and vibrations or corresponding

Loads, especially at the limits of the driving range exposed.

In order to take these loads into account, the connection of the ALA blade 11 to the shaft 12 is made massive via a (blade) sleeve 14. The blade 11, the sleeve 14 and the shaft 12 are thereby via a central threaded pin

17 held together in the axial direction. The blade 11, the sleeve and the shaft 12 are then pinned together (FIG 8). By the pins 110 in the blade 11 and the sleeve 14 is simultaneously a release of the central threaded pin 17th

locked out .

In the assembled state, all pins 110 are connected or covered on the face side by adjacent components, so that loosening in the operating state is precluded. At the waves 12 sit each - with the waves 12th

pinned - roller levers or adjusting levers 15, which engage over rollers 13 in scenes 24. For this purpose, the scenes 24 straight slots 26, in which these rollers 13 are guided in each case (Figures 2 to 6).

9 shows the storage of such a roller 13 on

Roller lever 15 in detail. The roller 13 sits on one

Plain bearing bushing 16, which in turn mounted on a threaded pin 17 and with a ring 18 and with a

Circlip 19 is secured there. The threaded pin 17 is bolted to the roller lever 15 to block and secured there by a dowel pin 110. The scenes 24 are each about two in one

Gate holder 23 recorded eccentric 3 firmly connected to this gate retaining ring (ALA collar) 23 or screwed (Figures 4 and 5). 5 shows such an eccentric unit 3 in detail. The

Eccentric unit 3 has an eccentric 31 with two holes 37. For this purpose, the eccentric 31 there is a connected to the gate 24 eccentric pin 32, this eccentric 32 locking circlip 34, a mounting hopper 33 and a cylinder screw 25 through which the clamping and Fixation occurs, on. Via the second bore 37, the adjustment of the eccentric 3, i. For this purpose, the eccentric 31 there a cylinder screw 25, via which the adjustment by rotation of the eccentric 31 in

Slider retaining ring 23 takes place on.

The link retaining ring 23 is in turn a construction of several distributed over the circumference of the link retaining ring 23 ring carriers 21 with cap screws 25 and

Distance cylinders 22 with a collar of the ELA (ELA collar) 27 firmly connected or screwed (Figure 3). If the ELA angle, ie the angular position of the ELA blades 29 and thus the flow of the ELA 103, is adjusted, then the ELA adjusting ring rotates 27. The ALA blading 1, 11 leads according to the translation / reduction in the Slots 24 and the roller lever 15 this rotation with out.

(b) divisibility of the adjustment mechanism

In this adjustment mechanism or Verstellmimik 3 is

Roller lever 15 with the spiral housing 101 and the

Gate holder 24 connected to the suction flange 105. Since these components are successively mounted on the gearbox, the Verstellmimik 3 is carried out according to divisible.

The division of Verstellmimik 3 takes place at the contact points of rollers 13 and scenes 24. For this purpose, scenes 24 and rollers 13 are provided with mounting chamfers 39 as Einfädelhilfe.

(c) Assembly procedure

1. Pre-assembly (guide) paddle unit 1

Pre-assembly shaft 12 and blade 11

For the blading 1 of the ALA 102 is first the

Blade sleeve 14 set on the ALA shaft 12 and screwed on the threaded pin 17 with the blade 11.

Subsequently, radial and axial dowel pins 110 are bored and used to secure the position of the blade 11 and ALA shaft 12.

Pre-assembly roller lever 15 The roller 13, the plain bearing bushing 16 and the ring 18 are secured to the locking ring 19 on the threaded pin 17. This is screwed into the roller lever 15 to block, then drilled and secured by dowel pins 110.

2. Pre-assembly of the scenes 24 on Eintrittsleitapparat (ELA) 103

To prepare the gate holder ring 23, two eccentric units 3 are screwed to a gate 24 in each of these. The locking screws 25 are only loosely screwed. The tightening and thus the clamping takes place after setting the slide position (see point 4.).

On the ELA 103, the ring carriers 21 with cylindrical screws 25 and spacing cylinders 22 on the ELA adjusting ring 27 are radially closed

Fasten. Subsequently, the preassembled

Gate holder 23 bolted to the ring carriers 21.

3. Assembly of the stator blades 1 in the spiral housing 101 (to each other, 0 °) In the spiral housing 101 are in the late contact surface of the

Diffuser disc 106 drilled holes according to the neutral and limit positions of the ALA blading 1 introduced.

The adjustment takes place without Diffusorscheibe, whereby in the

Final state, the diffuser disc covers the setting hole.

Thus, the flow space is smooth and at the same time the adjustment holes are available for later alignment work.

For assembly, first the sliding bearing bushes 16 are to be placed in the shaft seats 28 in the spiral housing 101. Subsequently, the preassembled vane units 1 are inserted from the spiral rear side (collar side) and the blades 11 are brought into contact with the pins. The preassembled roller levers 15 are then placed on the shafts 12 and aligned in a circle. This adjustment is fixed via the preassembly thread 38 of the roller lever 15.

Subsequently, roller lever 15 and ALA shafts 12th

pinned together. Thus, the adjusting torque can be transmitted and the stator blades 1 are axially secured.

4. Final settings ALA angle / ELA angle

(Wedding of the adjustment mechanism 3)

For final adjustment is attached to the spiral housing 101 of the finished gearbox. Out

Accessibility reasons are pinion shaft and

Contour / inlet ring omitted.

The positioning pins for ALA zeroing are removed and suction flange 105 and attached ELA 103 are inserted axially with the linkage attachment. All glide

Rollers 13 in their respective backdrop 24th

The ELA 103 must be manually moved to its maximum co-rotating position (85 °). Through the coupling, the ALA blades 11 adjust as desired.

These are through the eccentric 31 in their first

Boundary position (according to coupling law) to bring. Accessibility is for the adjustment tool, in this case a

Allen key in the ball head, over the

Setting holes 107 given in the suction flange 105.

To check the ALA angular position, the holes and the locating pins in the spiral housing 101 (contact surface

Diffuser disc 106) used. After that, the ELA 103 is manually in its largest

Counter-rotating position (-35 °) brought. As a result, adjust the ALA Schaufein 11 again. This second position of the ALA Schaufein 11 is again on the eccentric 31 gem.

Setpoint adjusted.

To secure the settings then all

Exzentereinheiten 3 about their cylinder screws 25 in

Gate holder 23 clamped.

After disassembly of suction flange 105 with ELA attachments 103, the scenes 24 are bumped with gate holder 23 and pinned.

Claims

claims

Device for adjusting the angle of blades (11) of an outlet guide apparatus (102) of a compressor (100), having a plurality of angle-adjustable blades (11) which are each supported on a shaft (12) in a housing (101), characterized in that

the shafts (12) each have a (adjustment) lever (15)

which is guided using a slide (24), wherein the scenes (24) are arranged on a adjusting ring (23), so that upon adjustment of the adjusting ring (23), the angular displacement of the blades (11) can be realized.

2. Angle adjustment device according to at least one of the preceding claims,

characterized in that

the (adjustment) lever (15) using a lever (15) arranged roller (13) in the slot (24) is guided.

3. Angle adjustment device according to at least one of the preceding claims,

characterized in that

the backdrop (24) a slot (26), in particular a straight slot (26), and / or a surface neutral to a

Abrollkreis one on the lever (15) and arranged in the

Gate (24) guided roller (13).

4. Angle adjustment device according to at least one of the preceding claims,

characterized in that

the adjusting ring (23) with an inlet guide (103) of the compressor (100) is connected such that the adjustment of the adjusting ring (23) with an angular adjustment of blades (29) of the inlet guide (103) is coupled.

5. Angle adjustment device according to at least one of the preceding claims,

characterized in that

a connection of the shaft (12) with the (adjusting) lever (15) is carried out using a sleeve (14), wherein in particular the shaft (12), the sleeve (14) and the

(Adjustment) lever (15) via a pin (17), in particular a threaded pin (17), are held together in the axial direction.

6. Angle adjustment device according to at least one of the preceding claims,

characterized in that

the device for angular adjustment is made divisible, in particular the divisibility at a connection point between the (adjustment) lever (15) and the link (24), in particular between a on (adjustment) lever (15)

arranged roller (13) and the link (24), is executed.

7. Angle adjustment device according to at least one of the preceding claims,

characterized in that

the link (24) and / or on the (adjusting) lever (15) arranged roller (13) has a Montagefase, in particular as Einfädelhilfe, / has.

8. Angle adjustment device according to at least one of the preceding claims,

characterized in that

the housing (101) is a volute (101).

9. Angle adjustment device according to at least one of the preceding claims,

characterized in that

the compressor (100) is a transmission compressor (101),

in particular a multi-stage transmission compressor (101) used for air separation.

10. A method for mounting a device for angular adjustment of blades (11) of a

Austrittsleitapparats (102) according to one of the preceding device claims in a housing (101) of the compressor (100), in particular a transmission compressor (100), in coupling the angular adjustment of the Austrittsleitapparats

(102) with an inlet guide (103) of the compressor

(100) in the

- first

- The blades (11) are mounted on the respective shaft (12) and the rollers (13) on the respective (adjustment) lever (15) and

- The scenes (24) to the adjusting ring (23) and the

Adjusting ring (23) are mounted on the inlet guide (103) and

- The waves (12) in the housing (101) and the

(Adjustment) levers (15) are mounted on the respective shaft (12)

- after that

- The Eintrittsleitapparat (103) is mounted in the housing (101), wherein the rollers (13) are inserted into the respective link (24), whereby the coupling is effected.