EP3112693A1 - Transmission turbo compressor, method for aligning - Google Patents

Abstract

Transmission turbo-compressor (GC), comprising a transmission housing (CG), at least one turbomachine (TM1-TMi) having a turbomachine shaft (TMS) extending along an axis (X), - wherein the at least one turbomachine (TM1-TMi) a volute casing (CV) comprises, comprising at least one impeller (IP) rotatable about the axis (X), at least one turbomachine shaft section (STM) of the turbomachine shaft (TMS) to which the impeller (IP) is attached, an inflow (IN) for the admission of a process fluid into the impeller (IP), - An outflow (EX) comprises the outlet of the process fluid from the volute casing (CV). To improve it is envisaged that the gear housing (CG) has a first contact surface (SUP1) of a housing alignment part (CCPT), which extends substantially horizontally in the ready-to-use state and faces upwards. wherein the spiral housing (CV) has a downwardly extending second contact surface (SUP2) of a spiral alignment part (VCPT) that essentially runs horizontally in the ready-to-use state, - Wherein the second contact surface (SUP2) in the operational state in contact with the first contact surface (SUP1) is for the purpose of vertical alignment of the spiral housing (CV) relative to the transmission housing (CG).

Description

The invention relates to a transmission turbo compressor comprising a transmission housing, at least one turbomachine having a turbomachine shaft extending along an axis, the at least one turbomachine comprising a volute, comprising at least one impeller rotatably formed about the axis, comprising at least one turbomachinery shaft portion of the turbomachine shaft the impeller is mounted, an inflow comprises for the admission of a process fluid into the volute, an outflow comprises to the outlet of the process fluid from the volute. In addition, the invention relates to a method for aligning a spiral housing relative to a transmission housing for such a geared turbomachine.

In the design of gear turbo compressors, it is a fundamental task to match shaft spacings and gear ratios with the associated installation spaces of the flow-guiding volute casing of individual turbomachines connected to the gearbox.

A Getriebeturboverdichter (English: integrally geared compressor) of the type defined is already out of the WO 2011/141439 A1 known.

One to four turbomachinery with turbomachinery shafts - often called pinion shafts - around a drive shaft - which is also often called wheel shaft - are regularly arranged on a transmission housing or gearbox. An increasing number of turbomachines provided on the gear compressor - often compressors - or an increasing size of the individual compressors arranged there leads to the problem of arranging the compressors on the two opposite sides, at which the shaft ends of the turbomachine shafts are led out, of the gearbox and at the same time to obtain thermodynamically meaningful speeds at the individual turbomachines as a result of a large wheel diameter and pinion diameters in the transmission. The available distance or space between the individual shaft ends, which protrude from the gear housing and to each of which a corresponding - preferably centrifugal - turbomachine is connected, determined as a rule as a function of the gear on the drive shaft and the gears to the respective Pinion shafts or turbomachinery shafts. If the corresponding distances are not sufficient for the arrangement of the individual volutes - such as the housing of the centrifugally formed turbomachinery usually sufficient - so intermediate shafts between the large gear of the drive shaft and the pinions of the turbomachine shafts are regularly provided with a corresponding direction of rotation reversal. Another possibility, with only a limited space to meet the thermodynamic requirements of the individual turbomachinery or the entire geared turbomachine, is to make the arrangement of turbomachinery to the transmission housing space-saving.

Based on the problems and requirements of the prior art, it has the object of developing a geared turbomachinery of the type defined in such a way that the available space for attaching turbomachinery to a gearbox of a Getriebeturboverdichters better to solve the thermodynamic task is exploited.

To solve a Getriebeturboverdichter of the type defined is proposed with the additional features of the characterizing part of claim 1. In addition, a method for assembling such a Getriebeturboverdichters proposed according to the back to the device claims method claim. The respective subclaims contain advantageous developments of the invention.

In the context of this patent application, terms such as axial, radial, tangential, circumferential direction are always related to an axis, longitudinal axis, rotation axis or shaft axis, without explicitly stating this axis, because the relationship to the corresponding axis can be clearly recognized by the person skilled in the art.

A particular advantage of the invention is that the adjustment or alignment device is not space-defining. In particular, in spiral housings, which are provided for a size of impellers whose diameter is less than 1000mm, beyond the dimensions of the volute casing itself protruding adjusting devices for aligning the mounting lengthwise proportionately so significant that there may be difficulties, the various turbomachinery housing or Spiral housing to be arranged on the gear housing. The invention avoids this problem by the radial space used by the spiral housings is also used for the arrangement of the Spiralausrichtteile and Gehäuseausrichtteile. In this way, not the alignment parts are space-defining, but the space on the gear housing is best or almost completely utilized for the implementation of the thermodynamic task. The arrangement of the alignment behind the outline of the spiral housing not only saves size requirements of the gear compressor, but also the space requirements of the overall arrangement, for example in a nacelle.

An advantageous development of the invention provides that the gear housing has a bearing plate, wherein the bearing plate designed as a half cylinder is fixedly mounted on at least one wall of the transmission housing, such that at substantially horizontal operating orientation of the axis of the turbomachine shaft, a bearing for the turbomachine shaft, in particular from above, can be inserted, wherein the first bearing surface is fixedly connected to the bearing plate or integral part of the bearing plate. This design leads to a simplified structure, since already existing Components - the bearing plate - are used with already machined surfaces to Ausrichtzecken the spiral housing. Particularly preferably, the gear housing has a parting line which forms a common surface with the first contact surface of the housing alignment part. In this way, already processed surfaces - in the present case that of the parting line - used or simply continued, so that no high additional manufacturing costs incurred by the inventive device or the inventive method. Synergetisch also affects the unified reference of the parting line with the first contact surface, which no longer have to be tolerated to each other, because these two surfaces can be performed with identical extension or are identical.

Preferably, the spiral housing is bolted axially in a ready-to-use state with the transmission housing. The term axial here refers to the longitudinal axis of the screw and the direction of extension of the turbomachine shaft, so that the screws for screwing and the shaft axis extend in identical directions along.

It is particularly preferred that the spiral housing is first brought into an approximate approximate to the final operating position position relative to the gear housing and is secured at this point in the game of screwing initially by means of screws against falling, without the volute casing with a final Tighten torque to the gearbox housing. The remaining clearance of the screw is then used to perform a vertical and horizontal Ausrichtrung of the spiral housing to the transmission housing by means of the housing alignment parts and Spiralausrichtteile invention.

A particularly preferred embodiment provides that the spiral housing bolted to the bearing plate of the transmission housing is. In this way, the transmission housing, the bearing, the shaft seal and the volute casing together form a solid unit that virtually eliminates deformation-related play bridging between stationary and rotating components. Further advantages of this modularity are shown in a lower vibration output as a result of the direct connection of the force-carrying components with each other even under dynamic load.

The alignment process according to the invention is further advantageously simplified when the second contact surface is the end face of a first screw which is adjustable by rotation in a Schraubenaxialposition the first screw relative to the remaining Spiralausrichtteil. In this way, the required position for the best possible alignment of the spiral housing relative to the gear housing can be determined by simply rotating the preferably designed as a hexagon socket screw first, without having to make, for example, individually customized components in between individually mechanically.

A further advantageous development provides that for securing the alignment position or alignment positions of the spiral housing relative to the transmission housing by means of Spiralausrichtteile or Getriebegehäuseausrichtteile a first fuse is provided on the first screw, so that accidental adjustment of the determined orientation is no longer possible. This first fuse is particularly preferably provided as a lock nut on the first screw preferably designed as a hexagon socket screw.

Particularly preferably, the first fuse can be supplemented by means of a second fuse, which also reliably excludes an adjustment under dynamic load. This second fuse can be designed, for example, and preferably as a pinning, so that the first screw is positively secured by means of a pin against rotation and thus an adjustment of the screw axial position.

Particularly preferably, at least two spiral alignment parts are provided for an alignment process of a spiral housing relative to a transmission housing, which interact with respective housing alignment parts. In this case, the arrangement of the two spiral alignment parts or housing alignment parts is expediently essentially in a horizontal plane in the operating position on different sides of the axis of the turbomachine shaft of the respective spiral housing.

Here, it is provided according to a further advantageous development of the invention that the two Spiralausrichtteile next to the respective first screw for vertical adjustment or alignment of the spiral housing relative to the gear housing, each having a second screw preferably aligned substantially perpendicular to the first screw. Particularly preferably, the second screw has a third contact surface on an end face, which is adjustable relative to the rest of the Spiralausrichtteils by rotation of the second screw in the Schraubenaxialposition that in cooperation with a fourth contact surface on the transmission housing preferably on the bearing plate, a horizontal exact Positioning of the spiral housing relative to the transmission housing is made possible. At the preferred two Spiralausrichtteilen are in this context preferably each a second screw provided which can act in their respective axial adjustment with each other and against each other.

Figur 1

eine schematische Seitenansicht eines erfingungsgemäßen Getriebeturboverdichters,

Figur 2

eine schematische Schnittansicht gemäß dem in Figur 1 ausgewiesenen Schnitt II,

Figur 3

eine schematische Schnittansicht gemäß dem in Figur 2 ausgewiesenen Schnitt III,

Figur 4

eine schematische Schnittansicht gemäß dem in Figur 3 ausgewiesenen Schnitt IV,

Figur 5

eine schematische Schnittansicht gemäß dem in Figur 4 ausgewiesenen Schnitt V,

Figur 6

eine schematische Schnittansicht gemäß dem in Figur 5 ausgewiesenen Schnitt VI.

In the following the invention with reference to a specific embodiment with reference to drawings is explained in more detail. Show it:

FIG. 1

a schematic side view of a erfingungsgemäßen gear turbo compressor,

FIG. 2

1 is a schematic sectional view according to section II shown in FIG.

FIG. 3

1 is a schematic sectional view according to section III indicated in FIG. 2,

FIG. 4

1 is a schematic sectional view according to section IV indicated in FIG. 3;

FIG. 5

FIG. 2 a schematic sectional view according to the section V shown in FIG. 4, FIG.

FIG. 6

a schematic sectional view according to the indicated in Figure 5 section VI.

In the description of the preferred embodiment of the invention shown in the figures, reference is not made to each figure individually, since the individual detail views only represent different details of identical components.

For non-identical components, however, identical reference numerals are sometimes still used, indicating that the corresponding components are identical, at least in their essential function. In the case of similar components, use is made in part of indexing which occurs either in consecutive numbering in the text or in the use of reference numerals in the drawings or by means of placeholders, which are generally indicated as "i" or "n". If an indication relates to a set of several indexed components or reference signs, use is made of the placeholder "'..." In particular, in particular in the reference signs of the claims. The specific variants of the invention given in the exemplary embodiments serve merely to clarify a possibility of carrying out the invention and do not limit the scope of protection unless they are features of an independent patent claim. The use of the term "according to the invention" does not immediately imply that it is a claim feature of an independent claim. nevertheless is, as far as the skilled person recognizes this possibility as meaningful, the combination of disclosed technical features possible, without this combination has been expressly verbis by means of the references in independent claims. These variants of the invention which can be recognized by the person skilled in the art are also attributable to the scope of protection.

FIG. 1 shows a schematic side view of a gear turbo compressor according to the invention with a central drive shaft DS and three turbomachine shafts TMS for three turbomachines TM1, TM2, TM3, TMi. The transmission turbo-compressor GC has a transmission housing CG to which the individual turbomachines TMi and their volute CV are mounted. The individual turbomachines TMi are designed as centrifugal-type turbocompressors. In this respect, it is also a spiral housing CV, since the turbocompressors sucking in axially through an inlet IN, after an acceleration of a process fluid in an impeller IP, radially output the process fluid in a spiral collector COL. Subsequently, the process fluid for further process steps in an outflow EX is delayed or increased according to Bernoulli in the pressure. Since the collector COL, which leads around the impeller IP to the outflow EX, widens in a spiral shape, the housing of the turbomachine is also designated as a spiral housing CV.

The FIG. 1 shows only one side of the transmission turbo-compressor GC, wherein regularly protrude on the unillustrated opposite side ends of turbomachinery shafts TMS as Turbomaschinenwellenabschnitte STM from the transmission housing CG for receiving an impeller IP from a turbomachine TMi.

As in the FIG. 2 recognizable, the volute CV serves in addition to the inclusion of the impeller IP and the recording and arrangement of a shaft seal SHS for sealing the operating pressure in the volute CV with respect to the atmosphere and the gear housing CG.

The transmission housing CG essentially serves the transmission of power transmitted from the drive shaft DS to the individual turbomachines TMi. For this purpose, a transmission is provided in the interior in a manner not shown, wherein in the lower part of the transmission housing CG, the oil used by the transmission is received in a manner not shown. In addition, all turbomachine shafts TMS and the drive shaft DS are mounted in the transmission housing CG. For this purpose, respective bearing plates BSUP of bearings BEA are provided in the region of the walls of the gear housing CG, so that the bearings BEA can initiate the corresponding bearing forces by means of the bearing plates BSUP into the walls of the gear housing CG, in particular for the radial support of the turbomachine shafts TMS.

The impellers IP of the turbomachines TMi are mounted on the projecting shaft ends of the turbomachine shafts TMS flying, so that the storage of the turbomachine shafts TMS does not take place by means of the volute CV. Opposite the inflow IN of the volute CV are the volute CV, as in FIG. 3 reproduced, with a back BS - see also FIG. 4 - Screwed with the bearing plates BSUP with extending in the axial direction of the turbomachinery shafts TMS screws SCR. An exact radial alignment in the horizontal and vertical direction of the spiral housing CV relative to the gear housing CG is required in particular because the shaft seal SHS is attached to the volute CV and the turbomachine shaft TMS is positionally mounted in the gear housing CG by means of bearings BEA.

In any case, since the shaft seal SHS needs precise horizontal and vertical radial alignment, the alignment is provided by the interaction of a spiral-housing-side spiral aligning member VCPT and a transmission-housing-side housing aligning member CCPT. The housing alignment part CCPT is presently part of the bearing plate BSUP, wherein the bearing plate BSUP essentially two horizontally extending and vertically for this purpose has upwardly facing first contact surfaces SUP1 of the housing alignment part CCPT, in addition to two vertically extending and horizontally facing in two opposite direction third contact surfaces SUP3 has.

The transmission housing CG has various horizontal parting lines SPP, which preferably have a horizontal extent coincident with the horizontal extent of the axes X of the turbomachine shafts TMS of the individual turbomachines TMI, which are arranged in this horizontal parting line SPP. The gear housing CG may have for this purpose a plurality of horizontal parting lines SPP. Like in the FIG. 1 reproduced, two housing parts SPP are provided for this purpose. In detail, the upper Gehäuseteilfuge SPP with the turbomachine TM1 is explained in more detail in the remaining illustrations.

The spiral alignment part VCPT is provided twice per turbomachine TMi on two opposite sides relatively mirror-symmetrically arranged to a vertical plane VP through the axis X of a turbomachine shaft TMS. The spiral aligning member VCPT has a second abutment surface SUP2 provided to contact the first abutment surface SUP1 of the housing aligning member CCPT during alignment. Furthermore, the spiral alignment part VCPT has a fourth contact surface SUP4, which interacts with the third contact surface SUP3 of the housing alignment part CCPT in a contact-forming manner. The second abutment surface SUP2 and the fourth abutment surface SUP4 of the spiral alignment parts VCPT are each formed as end faces of first screws SCR1 and second screws SCR2, respectively, with respect to the rest of the spiral alignment parts VCPT and the spiral housing CV these abutment surfaces being in a screw axial direction with regard to their screw axial position SRP Purpose of adjusting the relative position of the spiral housing CV relative to the gear housing CG by rotation of the first screw SCR1 and second screw SCR2 adjust. In the present case, the first screws SCR1 extend vertically with a longitudinal direction and the second screws SCR2 with a longitudinal direction horizontally according to their respective adjustment direction. The screws are designed as threaded pins with hexagon socket, so that between the gear housing CG and the volute CV housing accessibility with an elongated tool with corresponding end-face key surface arrangement is possible to save space.

The bearing plate BSUP, together with the respective parting line SPP, terminates vertically upwards, with the respective parting surface preferably forming a common machined surface with the respective second contact surface on the bearing plate BSUP of the housing alignment part CCP.

The spiral alignment part VCPT has a respective L-shaped main body which has a first leg L1 extending horizontally and a second leg L2 extending vertically. The two legs L1, L2 are each provided with a threaded hole, which in each case allows the screwing of the first screw SCR1 and the second screw SCR2. The horizontal legs L1 face each other in mirror symmetry to a vertical plane VP through the axis X of the turbomachine shaft TMS.

Here, the second screws SCR2 and second leg L2 are part of a horizontal alignment part (VCH) of the spiral excavation part VCPT.

The alignment by means of the first screws SCR1 is against gravity, since the geared turbomachines GC are set up with horizontally extending axes X of the turbomachine shafts TMS. The radial alignment by means of the second screws SCR2 takes place in such a way that the two opposite mirror-symmetrically arranged second screws SCR2 work against each other and in this way clamp the bearing plate BSUP comparatively between them. The orientation of the spiral housing CV against the Gear housing CG takes place in each case in different steps.

First, the volute CV is placed close to the end position on the transmission case CG, and the fixing screws SCR are screwed in the axial direction so that the movement space of the volute CV remains, but the volute CV does not fall off the transmission case CG gravitationally.

Subsequently, a radial alignment takes place to the axis X of the respective turbomachine shaft TMS of the spiral housing CV in the vertical direction by means of the two first screws SCR1 and in the horizontal direction by means of the two second screws SCR2.

As soon as the volute CV is sufficiently aligned with the axis X, the volute CV is fixedly secured to the gear box CG by the fixing screws SCR.

Before the final attachment or thereafter, the first screws SCR1 and the second screws SCR2 are secured in position by means of a first fuse SF1. The first fuse is a lock nut CN which fixes the first screws SCR1 and second screws SCR2 formed as a stud screw to the spiral aligning part VCPT. Furthermore, a second fuse SF2 in this exemplary embodiment and preferably by means of a pinning SP of the first screws SCR1 and second SCR2 screws on the Spiralausrichtteil VCPT, so that rotation of the first screws or second screws out of this desired position out is no longer possible. In subsequent disassembly and assembly, once determined alignment of the volute CV to the transmission housing CG can be reproduced.

Claims (15)

Transmission Turbo Compressor (GC),
full a transmission housing (CG), at least one turbomachine (TM1-TMi) having a turbomachine shaft (TMS) extending along an axis (X), - wherein the at least one turbomachine (TM1-TMi) a volute casing (CV) comprises, comprising at least one impeller (IP) rotatable about the axis (X), at least one turbomachine shaft section (STM) of the turbomachine shaft (TMS) to which the impeller (IP) is attached, an inflow (IN) for the admission of a process fluid into the volute casing (CV), an outflow (EX) comprises the outlet of the process fluid from the volute casing (CV), characterized in that - The gear housing (CG) in operation has a substantially horizontally extending, upwardly facing first contact surface (SUP1) of a Gehäuseausrichtteils (CCPT), wherein the spiral housing (CV) has a substantially horizontally extending, downwardly facing second contact surface (SUP2) of a spiral alignment part (VCPT), - wherein the second contact surface (SUP2) in the operative state in contact with the first bearing surface (SUP1) is for the purpose of vertical alignment of the spiral housing (CV) relative to the transmission housing (CG),
the spiral housing (CV) having a maximum radial width (RMAX) in the peripheral region of the second contact surface (SUP2),
wherein the spiral alignment member (VCPT) is radially recessed from the maximum radial width (RMAX). Transmission turbo-compressor (GC) according to claim 1,
wherein the transmission housing (CG) comprises a bearing plate (BSUP), wherein the bearing plate (BSUP) formed as a half cylinder is fixedly attached to at least one wall of the transmission housing (CG), such that in substantially horizontal operational alignment of the axis (X) from above a bearing (BEA) for the turbomachinery shaft (TMS) can be inserted during assembly,
wherein the first bearing surface (SUP1) is fixedly connected to the bearing plate (BSUP) or integral part of the bearing plate (BSUP). Transmission turbo-compressor (GC) according to at least one of claims 1, 2,
wherein the volute casing (CV) is screwed axially in a ready-to-use state with the transmission housing (CG). Transmission turbo-compressor (CG) according to claim 3,
wherein the spiral housing (CV) is screwed axially to the bearing plate (BSUP) of the gear housing (CG). Transmission Turbo Compressor (GC),
wherein the volute casing (CV) carries a shaft seal (SHS) which is sealingly formed to the turbomachine shaft (TMS). Transmission turbo-compressor (GC) according to at least one of the preceding claims 1 to 5,
wherein the second abutment surface (SUP2) is the end face of a first screw (VSR1) adjustable by rotation in a screw axial position (SRP) of the first screw (VSR1) opposite to the remaining spiral alignment part (VCPT). Transmission turbo-compressor (GC) according to at least claim 6,
wherein the first screw (VSR1) is connected by means of a first fuse (SF1) in a first screw axial position (SRP) is determinable. Transmission turbo-compressor (GC) according to claim 1,
wherein the first screw (VSR1) by means of a second fuse (SF2) in a Schraubenaxialposition (SRP) can be fixed. Transmission turbo-compressor (GC) according to at least one of the preceding claims,
the spiral alignment part (VCPT) additionally having a horizontal alignment part (VCH),
in such a way that the spiral housing (CV) is displaceable and lockable in a horizontal position relative to the gear housing (CG) by means of the horizontal alignment part (VCH). Transmission turbo-compressor (GC) according to at least preceding claim 7,
wherein the first fuse (SF1) is a lock nut (CN) on the first screw (VSR1) to the spiral alignment part (VCPT) or a pinning (SP) of the first screw (VSR1) to the spiral alignment part (VCPT). Transmission turbo-compressor (GC) according to claim 10,
wherein the first fuse (SF1) is a lock nut on the first screw (CSR1) to the spiral alignment member (VCPT) and the second fuse (FS2) is a pinning (SP) of the first screw (SVR1) to the spiral alignment member (VCPT). Transmission turbo-compressor (GC) according to at least one of the preceding claims,
wherein at least one turbomachine (TM1-TMi) has at least two spiral alignment parts (VCPT),
which are arranged substantially in a horizontal position in the operating position on different sides of the axis (X). A gear turbo-compressor (GC) according to at least one of the preceding claims, wherein two spiral alignment members (VCPT) are mounted on the volute casing (CV) on the side facing the transmission casing (CG). Method for aligning a volute casing (CV) with respect to a gearbox (CG) for a geared turbomachine (GC) according to at least one of the preceding claims 1 to 12,
characterized in that a) in a first step, at least one second abutment surface (SUP2) of the spiral alignment part (VCPT) of the spiral housing (CV) is supported on the first abutment surface (SUP1) of the housing alignment part (CCPT) of the transmission housing (CG), b) in a second step, the at least one second abutment surface (SUP2), which is designed as an end face of a first screw (VSR1), by means of rotation in a Schraubenaxialposition (SRP) of the first screw (VSR1) opposite the remaining Spiralausrichtteil (VCPT) up to a target position of the spiral housing (CV) relative to the transmission housing (CG) is adjusted, c) in a third step, the first screw (VSR1) is fixed by means of a first fuse (SF1) in a first screw axial position (SRP). The method of claim 14, wherein d) in a fourth step, the first screw (VSR1) is fixed by means of a second fuse (SF2) in the first screw axial position (SRP).

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