EP2024646B1 - Multi-stage turbo compressor - Google Patents

Multi-stage turbo compressor Download PDF

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Publication number
EP2024646B1
EP2024646B1 EP07729332A EP07729332A EP2024646B1 EP 2024646 B1 EP2024646 B1 EP 2024646B1 EP 07729332 A EP07729332 A EP 07729332A EP 07729332 A EP07729332 A EP 07729332A EP 2024646 B1 EP2024646 B1 EP 2024646B1
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EP
European Patent Office
Prior art keywords
wall
compressor unit
sealing elements
housing
wall section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP07729332A
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German (de)
French (fr)
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EP2024646A1 (en
Inventor
Udo Fingerhut
Wolfgang Zacharias
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Siemens AG
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Siemens AG
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Publication of EP2024646A1 publication Critical patent/EP2024646A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F04D17/12—Multi-stage pumps
    • F04D17/122—Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps

Definitions

  • the invention relates to a dynamic compressor, in particular turbocompressor, with an outer housing, a compressor unit, which has a tubular housing with an outer wall and preferably circular cross section, wherein the compressor unit in at least one, preferably circular opening formed in the outer housing, which has an inner wall, is included.
  • the publication FR 232 909 A which will be the closest prior art, discloses the features of the preamble of claim 1.
  • Compressor units in dynamic compressors, especially in turbocompressors, must be centered in close fits.
  • a not sufficiently tight fit has the consequence that between free rotating components, such as in particular the rotor, and fixed components, such as the housing of the compressor unit, required clearances can not be formed sufficiently narrow, as required for a sufficiently high efficiency ,
  • the invention has for its object to provide a dynamic compressor, in particular a turbocompressor, which can be dismantled without much difficulty even after compression of polluted or corrosive gases.
  • the compressor unit in the tubular housing, the stator elements are arranged together with the wheels mounted on a shaft, is received in a preferably circular opening of the outer housing, with a close fit to sufficiently small clearances between the rotating wheels with the shaft and the inner wall to ensure the tubular housing, which are imperative for a sufficiently high efficiency of the dynamic compressor, in particular a turbo compressor.
  • two spaced-apart sealing elements are provided between the outer wall of the tubular housing and the inner wall of the opening in which the compressor unit is accommodated. These spaced-apart sealing elements, together with the outer wall of the tubular housing and the inner wall of the opening in which the compressor unit is received, form an annular gap.
  • a fluid supply line which can be supplied with fluid from outside, in particular oil, in order to fill the annular intermediate space with oil and, in particular, to apply high oil pressure, extends into the intermediate space thus formed.
  • the fluid supply line is formed by one or more holes which extend through the outer housing between the spaced-apart sealing elements, thereby providing in a practical way, ie in particular without, for example, additional pipe pressure lines, a fluid distribution , In particular, an oil distribution is feasible.
  • the sealing elements are each arranged in a groove formed in the outer wall of the tubular housing.
  • the sealing elements can also be arranged in each case in a groove formed in the inner wall of the opening of the outer housing.
  • the tubular housing has a step-shaped section, comprising a first section having a first outer wall section and a second section having a second outer wall section, wherein the first section is offset from the second section, and wherein the at least one aperture formed in the outer case is conformed to the step shape and having a first inner wall portion facing the first outer wall portion and a second inner wall portion facing the second outer wall portion, and further one of the two Sealing elements between the first outer wall portion and the first inner wall portion and the other Sealing element between the second outer wall portion and the second inner wall portion is provided.
  • the step thus formed according to the invention acts like a piston which can be pressurized with oil pressure via the fluid supply line provided in accordance with the invention in order to push the compressor unit out of its housing, thereby ultimately providing an additional advantageous means for disassembling the dynamic compressor.
  • the stepped portion may also be formed in two pieces, such that the first portion is detachably connected to the second portion.
  • the piston designed according to the invention can be used to radially separate radially and / or axially from each other under certain circumstances glued together sections for disassembly purposes by applying pressure to the piston with oil pressure.
  • the turbocompressor 10 comprises an outer housing 12 in which a compressor unit 14 is arranged in the form of a bundle.
  • the compressor unit 14 comprises an inner housing in the form of a tubular housing 16 in which an impeller 18 is mounted on a shaft 19 is.
  • a stator 22 is mounted on the inner wall 20 of the tubular housing.
  • Extending radially from the outer housing 12 are three housing elements in the form of support walls 24, which in the present case are also provided as partitions for different process stages.
  • the compressor unit 14 is received in three circular openings 26 which are formed in the support walls 24 and axially aligned, each in a close fit.
  • two sealing elements 32 spaced from each other in sealing element grooves formed in the tubular housing 16 are formed.
  • the sealing element grooves can also be formed in the inner wall 28 of the opening 26.
  • the two spaced sealing elements 32 extend around the tubular housing 16 and form, together with the outer wall 30 of the tubular housing 16 and the inner wall 28 of the opening 26, in which the compressor unit 14 is received, an annular space 34. Starting from this Interspace 34 extends a bore 36 through the support wall 24 and the outer housing 12 to the outside.
  • the bore 36 can be supplied via a hydraulic connection (not shown) from the outside oil to fill the annular space 34 with oil and in particular to set under high oil pressure.
  • a hydraulic connection not shown
  • the bore 36 can be supplied via a hydraulic connection (not shown) from the outside oil to fill the annular space 34 with oil and in particular to set under high oil pressure.
  • the in the Fig. 1 centrally arranged support wall 24 is also sealed by means of two spaced-apart sealing elements 32 against a collar 38, wherein the sealing elements 32 are received in grooves formed in the collar 38.
  • the grooves may also be formed in the inner wall 28 of the centrally arranged support wall 24.
  • These two sealing elements 32 form in conjunction with the end face of the compressor unit 14 comprehensive federal 38 and in conjunction with the inner wall 28 of the formed in the support wall 24 opening 26 an annular gap 34 which are radially expanded by applying oil pressure in the bore 36 can.
  • the compressor unit 14 including the collar 38 is received in a close fit in the formed in the support wall 24 opening 26.
  • right supporting wall 24 is the opening 26 of the recording of the compressor unit 14 together with a housing 16 of the compressor unit 14 comprehensive collar 38, in which case only one sealing element 32 is provided so that with respect to this support wall 24 an annular space formation is not provided, and therefore also no floating storage of the compressor unit 14 by means of oil pressure.
  • a plurality of radial walls 40 which in the present case are in the form of baffles, extend from the outer housing 12.
  • the support walls 24 may also extend from the housing 16 of the compressor unit 14, in which case the sealing elements 32 are arranged between the inner wall of the outer housing 12 and the free end faces of the support walls 24.
  • the support walls 24 may be welded to the housing 16 of the compressor unit 14 and to the outer housing 12, respectively.
  • they can also be integral with the outer housing 12th or the housing 16 of the compressor unit 14, such that they are already milled, for example, during the production of the housing 16 and the outer housing 12 from the "full".
  • the inventively provided support walls 24 allow effective support between the outer housing 12 and compressor unit 16th
  • Fig. 2 shows a sectional view of a section of another turbocompressor 10 according to the invention, wherein the housing 16 of the compressor unit 14 has a stepped portion, comprising two radially offset portions 42.
  • the two sections 42 are connected to each other via a screw 44. Due to the offset of the two sections 42, a stepped transition point is formed, wherein the compressor unit 14 bears axially at this transition point.
  • two sealing elements 32 are provided for sealing, with a bore 36 extends from the outside through the outer housing 12 and further through the support wall 24 up to the stepped transition point.
  • the step-shaped transition point which acts like a piston according to the invention, subjected to oil pressure acts on the right housing portion 42 an axially directed to the right power.
  • the housing 16 can be pressed from its formed in the support wall 24 recording.
  • the disassembly of the turbocompressor 10. substantially be simplified.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

The turbocompressor has a compressor unit (14) inside an inner cylindrical casing (16). This is mounted in an outer casing (12). Two annular seals (32) are fitted between the casings which are spaced from each other. An oil feed pipe (36) is positioned between the seals.

Description

Die Erfindung betrifft einen dynamischen Verdichter, insbesondere Turboverdichter, mit einem Außengehäuse, einer Verdichtereinheit, die ein rohrförmiges Gehäuse mit einer Außenwand und vorzugsweise kreisförmigem Querschnitt aufweist, wobei die Verdichtereinheit in wenigstens einer in dem Außengehäuse ausgebildeten, vorzugsweise kreisförmigen Öffnung, die eine Innenwand aufweist, aufgenommen ist. Die Druckschrift FR 232 909 A , die als nächstliegender Stand der Technik augesehen wird, offenbart die Merkmale des Oberbegriffs des Anspruchs 1.The invention relates to a dynamic compressor, in particular turbocompressor, with an outer housing, a compressor unit, which has a tubular housing with an outer wall and preferably circular cross section, wherein the compressor unit in at least one, preferably circular opening formed in the outer housing, which has an inner wall, is included. The publication FR 232 909 A , which will be the closest prior art, discloses the features of the preamble of claim 1.

Verdichtereinheiten in dynamischen Verdichtern, insbesondere in Turboverdichtern, müssen in engen Passungen zentriert werden. Eine nicht hinreichend eng ausgebildete Passung hat zur Folge, dass die zwischen rotierenden Bauteilen, wie insbesondere dem Rotor, und feststehenden Bauteilen, wie dem Gehäuse der Verdichtereinheit, erforderlichen Freiräume nicht so hinreichend eng ausgebildet werden können, wie es für einen hinreichend hohen Wirkungsgrad erforderlich ist.Compressor units in dynamic compressors, especially in turbocompressors, must be centered in close fits. A not sufficiently tight fit has the consequence that between free rotating components, such as in particular the rotor, and fixed components, such as the housing of the compressor unit, required clearances can not be formed sufficiently narrow, as required for a sufficiently high efficiency ,

Eine in hinreichend engen Passungen vorgenommene Zentrierung hat jedoch zur Folge, dass die Passungsstellen bei Verdichtung von verschmutzten oder korrosiven Gasen "verkleben". Diese "Verklebung" der Passungsstellen hat zur Folge, dass eine Demontage des Turboverdichters nur sehr schwierig und unter Umständen gar nicht mehr möglich ist.However, a centering made in sufficiently narrow fits has the result that the points of fit "stick" when compressed by polluted or corrosive gases. This "gluing" of the fitting points has the consequence that disassembly of the turbocompressor is very difficult and under certain circumstances no longer possible.

Der Erfindung liegt die Aufgabe zugrunde, einen dynamischen Verdichter, insbesondere einen Turboverdichter zu schaffen, der auch nach Verdichtung von verschmutzen oder korrosiven Gasen ohne größere Schwierigkeiten demontiert werden kann.The invention has for its object to provide a dynamic compressor, in particular a turbocompressor, which can be dismantled without much difficulty even after compression of polluted or corrosive gases.

Diese Aufgabe ist erfindungsgemäß mit dem eingangs genannten dynamischen Verdichter, insbesondere Turboverdichter gelöst, bei dem zwischen der Außenwand des rohrförmigen Gehäuses und der Innenwand der Öffnung, in der die Verdichtereinheit aufgenommen ist, zwei voneinander beabstandete Dichtelemente vorgesehen sind, und wobei ferner eine Fluid-Zuleitung vorgesehen ist, die das Außengehäuse durchdringt und sich bis zwischen die voneinander beabstandeten Dichtelemente erstreckt.This object is achieved with the above-mentioned dynamic compressor, in particular turbocompressor, in which between the outer wall of the tubular housing and the inner wall of the opening in which the compressor unit is received, two spaced-apart sealing elements are provided, and further wherein a fluid supply line is provided which penetrates the outer housing and extending to between the spaced-apart sealing elements.

Die Verdichtereinheit, in deren rohrförmigem Gehäuse die Statorelemente samt den auf einer Welle angebrachten Laufrädern angeordnet sind, ist in einer vorzugsweise kreisförmigen Öffnung des Außengehäuses aufgenommen, und zwar mit einer engen Passung, um hinreichend kleine Freiräume zwischen den mit der Welle rotierenden Laufrädern und der Innenwand des rohrförmigen Gehäuses zu gewährleisten, die für einen hinreichend hohen Wirkungsgrad des dynamischen Verdichters, insbesondere eines Turboverdichters zwingend erforderlich sind.The compressor unit, in the tubular housing, the stator elements are arranged together with the wheels mounted on a shaft, is received in a preferably circular opening of the outer housing, with a close fit to sufficiently small clearances between the rotating wheels with the shaft and the inner wall to ensure the tubular housing, which are imperative for a sufficiently high efficiency of the dynamic compressor, in particular a turbo compressor.

Erfindungsgemäß sind zwischen der Außenwand des rohrförmigen Gehäuses und der Innenwand der Öffnung, in der die Verdichtereinheit aufgenommen ist, zwei voneinander beabstandete Dichtelemente vorgesehen. Diese voneinander beabstandeten Dichtelemente bilden zusammen mit der Außenwand des rohrförmigen Gehäuses und der Innenwand der Öffnung, in der die Verdichtereinheit aufgenommen ist, einen ringförmigen Zwischenraum. In den so gebildeten Zwischenraum erstreckt sich erfindungsgemäß eine Fluid-Zuleitung, der von außen Fluid, insbesondere Öl, zugeführt werden kann, um den ringförmigen Zwischenraum mit Öl zu füllen und insbesondere mit hohem Öldruck zu beaufschlagen. Durch den so in dem ringförmigen Zwischenraum einstellbaren hohen Öldruck können sich durch Verdichtung von verschmutzten oder korrosiven Gasen gebildete Verklebungen, die sich zwischen der Gehäuseaußenwand der Verdichtereinheit und der Innenwand der Aufnahme befinden, durch Schmieren und Aufweiten beseitigt werden, wobei die Verklebungen sonst ein Herausziehen bzw. Herausdrücken der Verdichtereinheit aus der in Form einer engen Passung ausgebildeten Aufnahme stark behindern oder unter Umständen unmöglich machen.According to the invention, two spaced-apart sealing elements are provided between the outer wall of the tubular housing and the inner wall of the opening in which the compressor unit is accommodated. These spaced-apart sealing elements, together with the outer wall of the tubular housing and the inner wall of the opening in which the compressor unit is received, form an annular gap. According to the invention, a fluid supply line, which can be supplied with fluid from outside, in particular oil, in order to fill the annular intermediate space with oil and, in particular, to apply high oil pressure, extends into the intermediate space thus formed. As a result of the high oil pressure which can thus be set in the annular gap, adhesions formed by the compression of contaminated or corrosive gases, which are located between the housing outer wall of the compressor unit and the inner wall of the receiver, can be removed by greasing and widening, the adhesive bonds otherwise being pulled out Pushing out the compressor unit from the formed in the form of a close fit recording hinder or possibly impossible.

Insgesamt betrachtet, können mittels des so erfindungsgemäß gebildeten Zwischenraums, der mit Öldruck beaufschlagbar ist, radiale und/oder axiale Kräfte erzeugt werden. Eine Verklebung der Verdichtereinheit in der Aufnahme der Verdichtereinheit, die ein Folge der Verdichtung von verschmutzten oder korrosiven Gasen ist, kann mittels diese Kräfte problemlos beseitigt werden. Eine Demontage des erfindungsgemäßen Verdichters, die beispielsweise für Wartungsarbeiten vorzunehmen ist und bei der insbesondere die Verdichtereinheit aus ihrer Aufnahme zu lösen ist, kann dann nach Lösung der Verklebung problemlos vorgenommen werden.Overall, can be acted upon by means of the intermediate space according to the invention, which is acted upon by oil pressure, radial and / or axial forces are generated. Adhesion of the compressor unit in the receptacle of the compressor unit, which is a consequence of the compression of polluted or corrosive gases, can be easily eliminated by means of these forces. A disassembly of the compressor according to the invention, which is to be carried out for example for maintenance and in particular in which the compressor unit is to be released from their recording, can then be made easily after solving the bond.

Bei einer vorteilhaften Weiterbildung der Erfindung ist die Fluid-Zuleitung von einer oder mehreren Bohrungen gebildet, die sich durch das Außengehäuse bis zwischen die voneinander beabstandeten Dichtelemente erstrecken, wodurch auf praktische Weise, also insbesondere ohne beispielsweise zusätzliche Rohr-Druckleitungen vorzusehen, eine Fluid-Verteilung, insbesondere eine Öl-Verteilung realisierbar ist.In an advantageous embodiment of the invention, the fluid supply line is formed by one or more holes which extend through the outer housing between the spaced-apart sealing elements, thereby providing in a practical way, ie in particular without, for example, additional pipe pressure lines, a fluid distribution , In particular, an oil distribution is feasible.

Bei einer praktischen Weiterbildung der Erfindung sind die Dichtelemente jeweils in einer in der Außenwand des rohrförmigen Gehäuses ausgebildeten Nut angeordnet. Alternativ können die Dichtelemente auch jeweils in einer in der Innenwand der Öffnung des Außengehäuses ausgebildeten Nut angeordnet sein.In a practical development of the invention, the sealing elements are each arranged in a groove formed in the outer wall of the tubular housing. Alternatively, the sealing elements can also be arranged in each case in a groove formed in the inner wall of the opening of the outer housing.

Bei einer besonders praktischen Weiterbildung der Erfindung weist das rohrförmige Gehäuse einen stufenförmigen Abschnitt auf, umfassend einen ersten Teilabschnitt mit einem ersten Außenwand-Abschnitt und einen zweiten Teilabschnitt mit einem zweiten Außenwand-Abschnitt, wobei der erste Teilabschnitt gegenüber dem zweiten Teilabschnitt versetzt ist, und wobei die wenigstens eine in dem Außengehäuse ausgebildete Öffnung der Stufenform angepasst ist und einen ersten Innenwand-Abschnitt, der dem ersten Außenwand-Abschnitt gegenüberliegt, und einen zweiten Innenwand-Abschnitt, der dem zweiten Außenwand-Abschnitt gegenüberliegt, aufweist, und wobei ferner eines der beiden Dichtelemente zwischen dem ersten Außenwand-Abschnitt und dem ersten Innenwand-Abschnitt und das andere Dichtelement zwischen dem zweiten Außenwand-Abschnitt und dem zweiten Innenwand-Abschnitt vorgesehen ist.In a particularly practical development of the invention, the tubular housing has a step-shaped section, comprising a first section having a first outer wall section and a second section having a second outer wall section, wherein the first section is offset from the second section, and wherein the at least one aperture formed in the outer case is conformed to the step shape and having a first inner wall portion facing the first outer wall portion and a second inner wall portion facing the second outer wall portion, and further one of the two Sealing elements between the first outer wall portion and the first inner wall portion and the other Sealing element between the second outer wall portion and the second inner wall portion is provided.

Die so erfindungsgemäß gebildete Stufe wirkt wie ein Kolben, der über die erfindungsgemäß vorgesehene Fluid-Zuleitung mit Öldruck beaufschlagt werden kann, um die Verdichtereinheit aus ihrer Aufnahme zu drücken, wodurch letztlich ein zusätzliches vorteilhaftes Mittel für die Demontage des dynamischen Verdichters bereitgestellt wird. Mittels der Dichtelemente wird hierbei sichergestellt, dass ein hinreichend hoher Öldruck aufgebaut werden kann. Der stufenförmige Abschnitt kann auch zweistückig ausgebildet sein, derart, dass der erste Teilabschnitt lösbar mit dem zweiten Teilabschnitt verbunden ist. Ferner kann der erfindungsgemäß ausgebildete Kolben dazu verwendet werden, unter Umständen miteinander verklebte Teilabschnitte für Demontagezwecke durch Beaufschlagung des Kolbens mit Öldruck radial und/oder axial voneinander zu trennen.The step thus formed according to the invention acts like a piston which can be pressurized with oil pressure via the fluid supply line provided in accordance with the invention in order to push the compressor unit out of its housing, thereby ultimately providing an additional advantageous means for disassembling the dynamic compressor. By means of the sealing elements in this case it is ensured that a sufficiently high oil pressure can be built up. The stepped portion may also be formed in two pieces, such that the first portion is detachably connected to the second portion. Furthermore, the piston designed according to the invention can be used to radially separate radially and / or axially from each other under certain circumstances glued together sections for disassembly purposes by applying pressure to the piston with oil pressure.

Nachfolgend wird ein Ausführungsbeispiel eines erfindungsgemäßen Turboverdichters anhand der beigefügten Zeichnungen näher erläutert. Es zeigt:

Fig. 1
eine Halbschnitt-Darstellung eines erfindungsgemäßen Turboverdichters, und
Fig. 2
eine Schnitt-Darstellung eines Ausschnitts eines weiteren erfindungsgemäßen Turboverdichters.
Hereinafter, an embodiment of a turbocompressor according to the invention will be explained in more detail with reference to the accompanying drawings. It shows:
Fig. 1
a half-sectional view of a turbocompressor according to the invention, and
Fig. 2
a sectional view of a section of another turbocompressor according to the invention.

In der Fig. 1 ist ein erfindungsgemäßer Turboverdichter 10 in einer Halbschnitt-Darstellung gezeigt. Der Turboverdichter 10 umfasst ein Außengehäuse 12, in dem eine Verdichtereinheit 14 in Form eines Bündels angeordnet ist. Die Verdichtereinheit 14 umfasst ein Innengehäuse in Form eines rohrförmigen Gehäuses 16, in dem ein Laufrad 18 auf einer Welle 19 angebracht ist. An der Innenwand 20 des rohrförmigen Gehäuses ist ein Statorelement 22 angebracht.In the Fig. 1 an inventive turbocompressor 10 is shown in a half-sectional view. The turbocompressor 10 comprises an outer housing 12 in which a compressor unit 14 is arranged in the form of a bundle. The compressor unit 14 comprises an inner housing in the form of a tubular housing 16 in which an impeller 18 is mounted on a shaft 19 is. On the inner wall 20 of the tubular housing, a stator 22 is mounted.

Von dem Außengehäuse 12 erstrecken sich radial drei Gehäuseelemente in Form von Stützwänden 24, die vorliegend auch als Trennwände für unterschiedliche Prozess-Stufen vorgesehen sind. Die Verdichtereinheit 14 ist in drei kreisförmigen Öffnungen 26, die in den Stützwänden 24 ausgebildet und axial ausgerichtet sind, in jeweils einer engen Passung aufgenommen.Extending radially from the outer housing 12 are three housing elements in the form of support walls 24, which in the present case are also provided as partitions for different process stages. The compressor unit 14 is received in three circular openings 26 which are formed in the support walls 24 and axially aligned, each in a close fit.

Zwischen der als Sitz für die Verdichtereinheit 14 vorgesehenen Innenwand 28 der Öffnung 26, die in der in Fig. 1 links angeordneten Stützwand 24 ausgebildet ist, und der Außenwand 30 des rohrförmigen Gehäuses 16 sind zwei Dichtelemente 32 voneinander beabstandet in Dichtelement-Nuten angeordnet, die in dem rohrförmigen Gehäuse 16 ausgebildet sind. Alternativ können die Dichtelement-Nuten auch in der Innenwand 28 der Öffnung 26 ausgebildet sein. Vorliegend erstrecken sich die beiden voneinander beabstandeten Dichtelemente 32 um das rohrförmige Gehäuse 16 herum und bilden zusammen mit der Außenwand 30 des rohrförmigen Gehäuses 16 und der Innenwand 28 der Öffnung 26, in der die Verdichtereinheit 14 aufgenommen ist, einen ringförmigen Zwischenraum 34. Ausgehend von diesem Zwischenraum 34 erstreckt sich eine Bohrung 36 durch die Stützwand 24 und das Außengehäuse 12 nach außen.Between the intended as a seat for the compressor unit 14 inner wall 28 of the opening 26, which in the in Fig. 1 On the left side arranged support wall 24 is formed, and the outer wall 30 of the tubular housing 16, two sealing elements 32 spaced from each other in sealing element grooves formed in the tubular housing 16 are formed. Alternatively, the sealing element grooves can also be formed in the inner wall 28 of the opening 26. In the present case, the two spaced sealing elements 32 extend around the tubular housing 16 and form, together with the outer wall 30 of the tubular housing 16 and the inner wall 28 of the opening 26, in which the compressor unit 14 is received, an annular space 34. Starting from this Interspace 34 extends a bore 36 through the support wall 24 and the outer housing 12 to the outside.

Der Bohrung 36 kann über einen Hydraulik-Anschluss (nicht dargestellt) von außen Öl zugeführt werden, um den ringförmigen Zwischenraum 34 mit Öl zu füllen und insbesondere unter hohen Öldruck zu setzen. Durch den so in dem ringförmigen Zwischenraum 34 einstellbaren hohen Öldruck können sich durch Verdichtung von verschmutzten oder korrosiven Gasen gebildete Verklebungen, die sich zwischen der Außenwand 30 des rohrförmigen Gehäuses 16 und der Innenwand 28 der aufnehmenden Öffnung 26 befinden, durch Schmieren und Aufweiten beseitigt werden, die sonst ein Herausziehen bzw. Herausdrücken der Verdichtereinheit 14 aus der in Form einer engen Passung ausgebildeten Aufnahme stark behindern oder unter Umständen unmöglich machen würden. Gleichzeitig wird eine Axialkraft erzeugt, die ein Herausdrücken der Verdichtereinheit 14 aus der Passung, insbesondere für Demontagezwecke, unterstützt.The bore 36 can be supplied via a hydraulic connection (not shown) from the outside oil to fill the annular space 34 with oil and in particular to set under high oil pressure. By the high oil pressure thus adjustable in the annular space 34, adhesions formed between the outer wall 30 of the tubular housing 16 and the inner wall 28 of the receiving opening 26 by compaction of polluted or corrosive gases can be removed by lubrication and expansion, otherwise pulling out or pushing out the compressor unit 14 from the formed in the form of a tight fit To hinder reception or possibly make it impossible. At the same time an axial force is generated, which promotes a pushing out of the compressor unit 14 from the fit, in particular for disassembly purposes.

Die in der Fig. 1 mittig angeordnete Stützwand 24 ist ebenfalls mittels zweier voneinander beabstandeter Dichtelemente 32 gegenüber einem Bund 38 abgedichtet, wobei die Dichtelemente 32 in Nuten aufgenommen sind, die in dem Bund 38 ausgebildet sind. Alternativ können die Nuten auch in der Innenwand 28 der mittig angeordneten Stützwand 24 ausgebildet sein. Auch diese beiden Dichtelemente 32 bilden in Verbindung mit der Stirnseite des die Verdichtereinheit 14 umfassenden Bundes 38 und in Verbindung mit der Innenwand 28 der in der Stützwand 24 ausgebildeten Öffnung 26 einen ringförmigen Zwischenraum 34, der durch Aufbringen von Öldruck in der Bohrung 36 radial aufgeweitet werden kann. Auch hier ist die Verdichtereinheit 14 samt dem Bund 38 in einer engen Passung in der in Stützwand 24 ausgebildeten Öffnung 26 aufgenommen.The in the Fig. 1 centrally arranged support wall 24 is also sealed by means of two spaced-apart sealing elements 32 against a collar 38, wherein the sealing elements 32 are received in grooves formed in the collar 38. Alternatively, the grooves may also be formed in the inner wall 28 of the centrally arranged support wall 24. These two sealing elements 32 form in conjunction with the end face of the compressor unit 14 comprehensive federal 38 and in conjunction with the inner wall 28 of the formed in the support wall 24 opening 26 an annular gap 34 which are radially expanded by applying oil pressure in the bore 36 can. Again, the compressor unit 14 including the collar 38 is received in a close fit in the formed in the support wall 24 opening 26.

In der in Fig. 1 rechts dargestellten Stützwand 24 dient die Öffnung 26 der Aufnahme der Verdichtereinheit 14 samt einem das Gehäuse 16 der Verdichtereinheit 14 umfassenden Bund 38, wobei hier lediglich ein Dichtelement 32 vorgesehen ist, so dass hinsichtlich dieser Stützwand 24 eine ringförmige Zwischenraumausbildung nicht vorgesehen ist, und mithin auch keine schwimmende Lagerung der Verdichtereinheit 14 mittels Öldruck. Von dem Außengehäuse 12 erstrecken sich ferner noch mehrere Radialwände 40, die vorliegend in Form von Leitblechen ausgebildet sind.In the in Fig. 1 right supporting wall 24 is the opening 26 of the recording of the compressor unit 14 together with a housing 16 of the compressor unit 14 comprehensive collar 38, in which case only one sealing element 32 is provided so that with respect to this support wall 24 an annular space formation is not provided, and therefore also no floating storage of the compressor unit 14 by means of oil pressure. Furthermore, a plurality of radial walls 40, which in the present case are in the form of baffles, extend from the outer housing 12.

Alternativ können sich die Stützwände 24 auch von dem Gehäuse 16 der Verdichtereinheit 14 erstrecken, wobei in diesem Fall die Dichtelemente 32 zwischen der Innenwand des Außengehäuses 12 und der freien Stirnseiten der Stützwände 24 angeordnet sind. Die Stützwände 24 können an das Gehäuse 16 der Verdichtereinheit 14 bzw. an dem Außengehäuse 12 angeschweißt sein. Ferner können sie auch einstückig mit dem Außengehäuse 12 bzw. dem Gehäuse 16 der Verdichtereinheit 14 sein, derart, dass sie beispielsweise bereits während der Fertigung des Gehäuses 16 bzw. des Außengehäuses 12 aus dem "Vollen" gefräst werden. Die erfindungsgemäß vorgesehenen Stützwände 24 ermöglichen eine wirksame Abstützung zwischen Außengehäuse 12 und Verdichtereinheit 16.Alternatively, the support walls 24 may also extend from the housing 16 of the compressor unit 14, in which case the sealing elements 32 are arranged between the inner wall of the outer housing 12 and the free end faces of the support walls 24. The support walls 24 may be welded to the housing 16 of the compressor unit 14 and to the outer housing 12, respectively. Furthermore, they can also be integral with the outer housing 12th or the housing 16 of the compressor unit 14, such that they are already milled, for example, during the production of the housing 16 and the outer housing 12 from the "full". The inventively provided support walls 24 allow effective support between the outer housing 12 and compressor unit 16th

Fig. 2 zeigt eine Schnitt-Darstellung eines Ausschnitts eines weiteren erfindungsgemäßen Turboverdichters 10, wobei das Gehäuse 16 der Verdichtereinheit 14 einen stufenförmigen Abschnitt, umfassend zwei radial zueinander versetzte Teilabschnitte 42, aufweist. Die beiden Teilabschnitte 42 sind über eine Schraubenverbindung 44 miteinander verbunden. Durch den Versatz der beiden Teilabschnitte 42 bildet sich eine stufenförmige Übergangsstelle aus, wobei die Verdichtereinheit 14 an dieser Übergangsstelle axial anliegt. Auch hier sind zur Abdichtung je zwei Dichtelemente 32 vorgesehen, wobei sich eine Bohrung 36 von außen durch das Außengehäuse 12 und weiter durch die Stützwand 24 bis zu der stufenförmigen Übergangsstelle erstreckt. Wird die stufenförmige Übergangsstelle, die erfindungsgemäß wie ein Kolben wirkt, mit Öldruck beaufschlagt, wirkt auf den rechten Gehäuseabschnitt 42 eine axial nach rechts gerichtete Kraft ein. Durch einen geeignet hohen Öldruck kann daher das Gehäuse 16 aus seiner in der Stützwand 24 ausgebildeten Aufnahme gedrückt werden. So kann die Demontage des Turboverdichters 10.wesentlich vereinfacht werden. Fig. 2 shows a sectional view of a section of another turbocompressor 10 according to the invention, wherein the housing 16 of the compressor unit 14 has a stepped portion, comprising two radially offset portions 42. The two sections 42 are connected to each other via a screw 44. Due to the offset of the two sections 42, a stepped transition point is formed, wherein the compressor unit 14 bears axially at this transition point. Again, two sealing elements 32 are provided for sealing, with a bore 36 extends from the outside through the outer housing 12 and further through the support wall 24 up to the stepped transition point. If the step-shaped transition point, which acts like a piston according to the invention, subjected to oil pressure acts on the right housing portion 42 an axially directed to the right power. By a suitably high oil pressure, therefore, the housing 16 can be pressed from its formed in the support wall 24 recording. Thus, the disassembly of the turbocompressor 10.substantially be simplified.

Claims (5)

  1. Dynamic compressor,
    especially a turbocompressor (10),
    with an outer casing (12), and a compressor unit (14),
    which has a tubular housing (16) with an outer wall (30) and with a preferably circular cross section,
    wherein the compressor unit (14) is accommodated in at least one preferably circular opening (26) which is formed in the outer casing (12) and has an inner wall (28),
    characterized in that
    two sealing elements (32), which are spaced apart from each other, are provided between the outer wall (30) of the tubular housing (16) and the inner wall (28) of the opening (26) in which the compressor unit (14) is accommodated, and
    wherein a fluid feed line (36) is additionally provided, which penetrates the outer casing (12) and extends to between the sealing elements (32) which are spaced apart from each other.
  2. Dynamic compressor according to Claim 1,
    characterized in that
    the fluid feed line (36) is formed by one or more bores which extend through the outer casing (12) to between the sealing elements (32) which are spaced apart from each other.
  3. Dynamic compressor according to either of Claims 1 or 2,
    characterized in that
    the sealing elements (32) are arranged in each case in a groove which is formed in the outer wall (30) of the tubular housing (16).
  4. Dynamic compressor according to either of Claims 1 or 2,
    characterized in that
    the sealing elements (32) are arranged in each case in a groove which is formed in the inner wall (28) of the opening (26) of the outer casing (12).
  5. Dynamic compressor according to one of Claims 1 to 4,
    characterized in that
    the tubular housing (16) has a step-shaped section,
    which comprises a first part (42) with a first outer wall section, and a second part (42) with a second outer wall section,
    wherein the first part (42) is offset in relation to the second part (42), and
    wherein the at least one opening (46) which is formed in the outer casing (12) is adapted to the shape of the step, and has a first inner wall section, which lies opposite the first outer wall section,
    and a second inner-wall section, which lies opposite the second outer wall section, and
    wherein in addition one of the two sealing elements (32) is provided between the first outer wall section and the first inner wall section, and the other sealing element is provided between the second outer wall section and the second inner wall section.
EP07729332A 2006-05-26 2007-05-21 Multi-stage turbo compressor Not-in-force EP2024646B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07729332A EP2024646B1 (en) 2006-05-26 2007-05-21 Multi-stage turbo compressor

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06010926A EP1860326A1 (en) 2006-05-26 2006-05-26 Multistage turbocompressor
PCT/EP2007/054888 WO2007137959A1 (en) 2006-05-26 2007-05-21 Multi-stage turbo compressor
EP07729332A EP2024646B1 (en) 2006-05-26 2007-05-21 Multi-stage turbo compressor

Publications (2)

Publication Number Publication Date
EP2024646A1 EP2024646A1 (en) 2009-02-18
EP2024646B1 true EP2024646B1 (en) 2009-09-16

Family

ID=37115906

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06010926A Withdrawn EP1860326A1 (en) 2006-05-26 2006-05-26 Multistage turbocompressor
EP07729332A Not-in-force EP2024646B1 (en) 2006-05-26 2007-05-21 Multi-stage turbo compressor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP06010926A Withdrawn EP1860326A1 (en) 2006-05-26 2006-05-26 Multistage turbocompressor

Country Status (7)

Country Link
US (1) US8133021B2 (en)
EP (2) EP1860326A1 (en)
CN (1) CN101454578B (en)
AT (1) ATE443212T1 (en)
DE (1) DE502007001552D1 (en)
ES (1) ES2331980T3 (en)
WO (1) WO2007137959A1 (en)

Cited By (2)

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WO2015158905A1 (en) 2014-04-17 2015-10-22 Siemens Aktiengesellschaft Arrangement of components in a fluid energy machine and assembly method
DE102014216349A1 (en) 2014-08-18 2016-02-18 Siemens Aktiengesellschaft Suction insert for a turbo compressor, arrangement with the suction insert

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JP2016040461A (en) * 2014-08-13 2016-03-24 三菱重工業株式会社 Centrifugal rotary machine
CN105822681B (en) * 2016-05-27 2018-06-29 无锡沃尔德轴承有限公司 A kind of bearing gland installation mold
EP3441621A1 (en) 2017-08-10 2019-02-13 Siemens Aktiengesellschaft Turbocompressor with injection of liquefied process gas in the flow path
JP6963471B2 (en) * 2017-11-09 2021-11-10 三菱重工コンプレッサ株式会社 Rotating machine
DE102017223791A1 (en) 2017-12-27 2019-06-27 Siemens Aktiengesellschaft Shaft seal arrangement of a turbomachine, turbomachine
DE102018200287A1 (en) 2018-01-10 2019-07-11 Siemens Aktiengesellschaft Turbomachinery inner housing

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US3874814A (en) * 1974-04-05 1975-04-01 Carrier Corp Closure key apparatus
US3976395A (en) * 1975-09-12 1976-08-24 Igor Martynovich Kalnin Multiple-stage centrifugal compressor
FR2324909A1 (en) * 1975-09-22 1977-04-15 Kalnin Igor High pressure multiple stage centrifugal compressor - has impeller mounted on common shaft accommodated in single casing
EP0549579A1 (en) * 1991-01-23 1993-07-07 Andreas Treugut Rotary pump
WO1999046512A1 (en) * 1998-03-13 1999-09-16 Hitachi, Ltd. Centrifugal compressor and shaft seal
CN2581736Y (en) * 2002-09-24 2003-10-22 浙江科尔泵业股份有限公司 Ultrahigh pressure low specific speed multi-stage centrifugal pump with double case and rigid shaft
GB0329839D0 (en) * 2003-12-23 2004-01-28 Boc Group Plc Vacuum pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015158905A1 (en) 2014-04-17 2015-10-22 Siemens Aktiengesellschaft Arrangement of components in a fluid energy machine and assembly method
DE102014207461A1 (en) 2014-04-17 2015-10-22 Siemens Aktiengesellschaft Arrangement of components of a fluid energy machine, joining method
DE102014216349A1 (en) 2014-08-18 2016-02-18 Siemens Aktiengesellschaft Suction insert for a turbo compressor, arrangement with the suction insert

Also Published As

Publication number Publication date
EP1860326A1 (en) 2007-11-28
CN101454578B (en) 2012-03-14
US8133021B2 (en) 2012-03-13
ES2331980T3 (en) 2010-01-21
WO2007137959A1 (en) 2007-12-06
US20090175717A1 (en) 2009-07-09
ATE443212T1 (en) 2009-10-15
CN101454578A (en) 2009-06-10
EP2024646A1 (en) 2009-02-18
DE502007001552D1 (en) 2009-10-29

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