EP2572108A1 - Centrifugal compressor - Google Patents

Centrifugal compressor

Info

Publication number
EP2572108A1
EP2572108A1 EP11721272A EP11721272A EP2572108A1 EP 2572108 A1 EP2572108 A1 EP 2572108A1 EP 11721272 A EP11721272 A EP 11721272A EP 11721272 A EP11721272 A EP 11721272A EP 2572108 A1 EP2572108 A1 EP 2572108A1
Authority
EP
European Patent Office
Prior art keywords
shaft
centrifugal compressor
shaft end
housing
spiral
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.)
Granted
Application number
EP11721272A
Other languages
German (de)
French (fr)
Other versions
EP2572108B1 (en
Inventor
Jürgen Geisner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2572108A1 publication Critical patent/EP2572108A1/en
Application granted granted Critical
Publication of EP2572108B1 publication Critical patent/EP2572108B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps

Definitions

  • the invention relates to a centrifugal compressor having a shaft extending along a machine axis, wherein a drive on the side of a collecting spiral, the
  • Machine module collects which drive on one of a
  • Housing of the centrifugal compressor guided out shaft end is disposed, wherein at an opposite shaft end of the shaft axial suction is provided at an overhang stage of the centrifugal compressor.
  • Such compressors are used in particular for compressing large volume flows (eg 600,000 m 3 per hour) to pressures of, for example, 8 bar.
  • the axial suction here has the advantage that the suction is designed to be particularly large and at the same time the maximum diameter of the wheels remains moderate, so that the machine can be operated at higher speeds without overloading the materials of the rotating parts.
  • Cooling unit Regularly, such a collecting spiral is a slightly helically executed annular chamber whose cross-sectional area is in the circumferential direction
  • the invention has therefore taken on the task of improving the initially defined centrifugal compressor such that on the one hand the production cost is reduced and on the other hand no high pressure losses in the
  • Circumference is undivided and is flanged to the housing of the centrifugal compressor.
  • the tolerance chain between the wheels of the shaft and opposite inner surfaces of the housing is particularly short.
  • Centrifugal compressor on one side final component as it formed a lid Accordingly, the number of components is reduced.
  • the directional data axial, radial, circumferential direction always refer to the machine axis.
  • the invention is based on a special
  • Figure 1 is a schematic representation of a
  • FIG. 1 shows a schematic longitudinal section through a compressor CO according to the invention.
  • Essential components of the compressor CO are a housing C, a shaft SH, the wheels IM, of which only one is shown and carries an overhang stage ST, one to the housing C.
  • the shaft SH extends along a machine axis AX, which is the axis of rotation of the drive D at the same time.
  • Process fluid F is axially drawn in by the compressor CO and enters an overhang stage ST, is further compressed downstream by means of impellers IM, and enters a final stage LST to be subsequently collected in the collection coil CC for entry into the subsequent machine modules.
  • the shaft SH is mounted in two radial bearings BEI, BE2.
  • the shaft SH has a first shaft end SEI and a second shaft end SE2, wherein the first shaft end SEI is driven by the drive D and the second
  • End of the shaft SE2 carries the overhang ST.
  • Shaft end SEI, SE2 the invention means a portion of the shaft extending from the respective end of the shaft in the direction of the shaft center, wherein about one third of the
  • the shaft end In the region of the first shaft end SEI, in addition to the torque-transmitting connection with the drive D, the collecting spiral CC, the second radial BE2 and a shaft seal SHS
  • Machine axis AX has a parting line is the
  • the collecting spiral CC carries the second radial bearing BE2 and the shaft seal SHS.
  • Design of the collecting spiral which is designed as a casting, has the advantage that it does not have any paragraph otherwise caused by a parting line in the circumferential direction, which could cause flow losses.
  • the attachment of the second radial bearing BE2 and the shaft seal SHS to the collecting spiral CC has the shortest possible tolerance chain between the radial bearing B2 and the shaft seal SHS result so that necessary for example thermal expansions radial clearances of the shaft SH in the shaft seal SHS can be minimal. In this way, a particularly good efficiency can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to a centrifugal compressor (CO) for compressing a fluid (F), comprising: a housing (C) comprising a partial joint plane (SP) extending parallel to or along a machine axis (AX), a shaft (SH) extending along the machine axis (AX) and having a first shaft end (SE1) and a second shaft end (SE2), at least one impeller (IM) mounted on the shaft (SH), a collector helix (CC) disposed downstream of the at least one impeller (IM) and collecting the compressed fluid (F) prior to outflow into a downstream machine module, wherein the collector helix (CC) is disposed at the first shaft end (SE1), and a drive (D) disposed on the first shaft end (SE1), wherein an axial intake is provided on the shaft (SH) at the second shaft end (SE2) at an overhang stage (ST) of the centrifugal compressor (CO). In order to improve the centrifugal compressor defined above, such that the production effort is reduced and no great pressure losses are produced in the collector helix, the collector helix (CC) is formed seamlessly in the circumferential direction and is flange mounted on the housing (C) of the centrifugal compressor (CO).

Description

Beschreibung description
Zentrifugalverdichter Die Erfindung betrifft einen Zentrifugalverdichter mit einer sich entlang einer Maschinenachse erstreckenden Welle, wobei ein Antrieb auf der Seite einer Sammelspirale, die The invention relates to a centrifugal compressor having a shaft extending along a machine axis, wherein a drive on the side of a collecting spiral, the
stromabwärts mindestens eines Laufrades ein verdichtetes Fluid vor einer Abströmung in ein nachfolgendes downstream of at least one impeller, a compressed fluid before an outflow into a subsequent
Maschinenmodul sammelt, welcher Antrieb an einem aus einemMachine module collects which drive on one of a
Gehäuse des Zentrifugalverdichters herausgeführten Wellenende angeordnet ist, wobei an einem gegenüberliegenden Wellenende der Welle eine axiale Ansaugung an einer Überhangstufe des Zentrifugalverdichters vorgesehen ist. Housing of the centrifugal compressor guided out shaft end is disposed, wherein at an opposite shaft end of the shaft axial suction is provided at an overhang stage of the centrifugal compressor.
Derartige Verdichter werden insbesondere zur Verdichtung von großen Volumenströmen (z.B. 600.000m3 pro Stunde) auf Drücke von beispielsweise 8bar eingesetzt. Die axiale Ansaugung hat hierbei den Vorteil, dass die Ansaugfläche besonders groß ausgebildet ist und gleichzeitig der maximale Durchmesser der Laufräder moderat bleibt, so dass die Maschine bei höheren Drehzahlen betrieben werden kann ohne die Materialien der rotierenden Teile zu überlasten. Diese Maschinen sind Such compressors are used in particular for compressing large volume flows (eg 600,000 m 3 per hour) to pressures of, for example, 8 bar. The axial suction here has the advantage that the suction is designed to be particularly large and at the same time the maximum diameter of the wheels remains moderate, so that the machine can be operated at higher speeds without overloading the materials of the rotating parts. These machines are
besonders zur Luftverdichtung bevorzugt. especially preferred for air compression.
In der sog. Sammelspirale sammelt sich das verdichtete In the so-called collective spiral, the condensed accumulates
Prozessfluid hinter dem Laufrad und strömt in ein Process fluid behind the impeller and flows into
nachfolgendes Maschinenmodul ein, beispielsweise ein Subsequent machine module, for example a
Kühlaggregat. Regelmäßig handelt es sich bei einer solchen Sammelspirale um eine leicht helikal ausgeführte Ringkammer, deren Querschnittsfläche sich in Umfangsrichtung mit Cooling unit. Regularly, such a collecting spiral is a slightly helically executed annular chamber whose cross-sectional area is in the circumferential direction
zunehmender Nähe zu der Abströmung in das nachfolgende increasing proximity to the effluent in the subsequent
Aggregat in Drehrichtung aufweitet, da der Volumenstrom durch den Sammelraum in gleicher Weise zunimmt. Diese aufwändige Geometrie ist dem Umstand geschuldet, dass ungünstige Aggregate widens in the direction of rotation, since the volume flow through the plenum increases in the same way. This elaborate geometry is due to the fact that unfavorable
Strömungskonturen, welche hohe Druckverluste in dem Flow contours, which high pressure losses in the
Sammelraum erzeugen, auch in Folge der erhöhten Dichte dieses Fluids besonders schädlich für den Wirkungsgrad sind. Bei herkömmlichen Verdichtern besitzt die Sammelspirale ebenso wie das Gehäuse eine horizontale Teilfugen, die entweder in der Strömungskontur der Sammelspiraleeinen ungünstigen Absatz erzeugt, der zu Druckverlusten führt oder einer aufwendigen Nachbearbeitung bedarf, die an dem in der Regel als Gussteil ausgebildeten Element zeitintensiv individualisiert Generate collecting space, also due to the increased density of this fluid are particularly detrimental to the efficiency. at Conventional compressors has the collecting spiral as well as the housing a horizontal parting lines, either in the flow contour of the collecting spiral generates an unfavorable paragraph, which leads to pressure losses or requires a costly reworking, which individualized time-consuming on the usually formed as a cast member element
ausgeführt werden muss. must be executed.
Die Erfindung hat es sich daher zur Aufgabe gemacht, den eingangs definierten Zentrifugalverdichter derartig zu verbessern, dass einerseits der Fertigungsaufwand reduziert ist und andererseits keine hohen Druckverluste in der The invention has therefore taken on the task of improving the initially defined centrifugal compressor such that on the one hand the production cost is reduced and on the other hand no high pressure losses in the
Sammelspirale erzeugt werden. Erfindungsgemäß wird vorgeschlagen, dass die Spirale in Generating spiral be generated. According to the invention it is proposed that the spiral in
Umfangsrichtung ungeteilt ausgebildet ist und an das Gehäuse des Zentrifugalverdichters angeflanscht ist.  Circumference is undivided and is flanged to the housing of the centrifugal compressor.
Die ungeteilte Ausbildung der Sammelspirale hat den Vorteil, dass die in der Regel als Gussteil ausgebildete Spirale keinen durch eine Teilfuge erzeugten Absatz auf der The undivided design of the collecting spiral has the advantage that the spiral formed as a rule as a casting no paragraph generated by a parting line on the
Strömungskontur ausbildet, der entweder in Folge einer Flow contour trains, either as a result of
Störung der Strömung zu unerwünschten Druckverlusten führt oder einer aufwendigen individualisierten Nachbearbeitung bedarf. Disturbing the flow leads to undesirable pressure losses or requires a complex individualized post-processing.
Daneben hat die ungeteilte Ausbildung der Spirale den In addition, the undivided formation of the spiral has the
Vorteil, dass Verformungen der Spirale aufgrund des hohen Druckes des abströmenden Fluids weitestgehend Advantage that deformations of the spiral largely due to the high pressure of the outflowing fluid
rotationssymmetrisch erfolgen und nicht, wie bei be rotationally symmetric and not, as in
herkömmlichen Ausbildungen, durch die Trennung in einer conventional training, by the separation in one
Teilfuge stark verzerrt auftreten. Insbesondere öffnet sich keine Teilfuge in Folge des Abströmdruckes und es gibt auch keine Ovalisierung des in der Regel rund ausgebildeten Teilfuge strongly distorted occur. In particular, no parting line opens as a result of Abströmdruckes and there is also no ovalization of the generally round trained
Flansches bzw. des Anschlussdurchmessers der Sammelspirale. Flange or the connection diameter of the collecting spiral.
Eine vorteilhafte Weiterbildung der Erfindung sieht vor, dass die Spirale als Träger eines Wellenlagers zur Lagerung der Welle ausgebildet ist. Hierdurch wird einerseits eine An advantageous development of the invention provides that the spiral as a carrier of a shaft bearing for the storage of Shaft is formed. This will on the one hand a
besonders kompakte Ausbildung erreicht und andererseits ist die Toleranzkette zwischen den Laufrädern der Welle und gegenüberliegenden Innenflächen des Gehäuses besonders kurz. achieved particularly compact design and on the other hand, the tolerance chain between the wheels of the shaft and opposite inner surfaces of the housing is particularly short.
Weiterhin vorteilhaft ist eine Ausbildung der Sammelspirale als Träger einer Wellendichtung auf der Seite, desjenigen Wellenendes an der der Antrieb des Zentrifugalverdichters angeordnet ist und die Welle aus dem Gehäuse des Further advantageous is an embodiment of the collecting spiral as a carrier of a shaft seal on the side of that shaft end on which the drive of the centrifugal compressor is arranged and the shaft of the housing of the
Zentrifugalverdichters herausgeführt ist. Insbesondere inCentrifugal compressor is led out. In particular in
Kombination mit der Ausbildung der Spirale als Trägerin des Lagers ergibt sich eine besonders kurze Toleranzkette Combination with the formation of the spiral as the wearer of the bearing results in a particularly short tolerance chain
zwischen der Lagerung der Welle und den Flächen der Dichtung, die der Welle gegenüberstehen, so dass besonders geringe Dichtungsspiele verwirklicht werden können bzw. die Dichtung eine besonders niedrige Lässigkeit hat. between the bearing of the shaft and the surfaces of the seal, which face the shaft, so that particularly small sealing play can be realized or the seal has a particularly low permeability.
Zweckmäßig ist die Sammelspirale als das Gehäuse des Appropriately, the collecting spiral as the housing of the
Zentrifugalverdichters einseitig abschließendes Bauteil gleichsam einem Deckel ausgebildet. Dementsprechend wird die Anzahl der Bauteile reduziert. Centrifugal compressor on one side final component as it formed a lid. Accordingly, the number of components is reduced.
Die Richtungsangaben axial, radial, Umfangsrichtung beziehen sich stets auf die Maschinenachse. The directional data axial, radial, circumferential direction always refer to the machine axis.
Im Folgenden ist die Erfindung anhand eines speziellen In the following, the invention is based on a special
Ausführungsbeispiels unter Bezugnahme auf eine Zeichnung näher beschrieben, wobei dem Fachmann sich neben diesen Embodiment described in more detail with reference to a drawing, the skilled person next to these
Ausführungsbeispiel insbesondere aus beliebiger Kombination der in den abhängigen Unteransprüchen definierten Merkmale weitere Möglichkeiten der Umsetzung der Erfindung ergeben. Es zeigt : Embodiment, in particular from any combination of the features defined in the dependent subclaims further possibilities of implementing the invention. It shows :
Figur 1 eine schematische Darstellung eines Figure 1 is a schematic representation of a
Längsschnitts durch einen Verdichter gemäß Erfindung . Figur 1 zeigt einen schematischen Längsschnitt durch einen Verdichter CO gemäß der Erfindung. Wesentliche Bestandteile des Verdichters CO sind ein Gehäuse C, eine Welle SH, die Laufräder IM, die von denen nur eines dargestellt ist und eine Überhangstufe ST trägt, eine an das Gehäuse C Longitudinal section through a compressor according to the invention. Figure 1 shows a schematic longitudinal section through a compressor CO according to the invention. Essential components of the compressor CO are a housing C, a shaft SH, the wheels IM, of which only one is shown and carries an overhang stage ST, one to the housing C.
angeflanschte Sammelspirale CC und ein Antrieb D, welcher die Welle SH dreht. flanged collecting spiral CC and a drive D, which rotates the shaft SH.
Die Welle SH erstreckt sich entlang einer Maschinenachse AX, welche gleichzeitig Drehachse des Antriebes D ist. Ein The shaft SH extends along a machine axis AX, which is the axis of rotation of the drive D at the same time. One
Prozessfluid F wird von dem Verdichter CO axial angesaugt und tritt ein in eine Überhangstufe ST, wird stromabwärts mittels Laufrädern IM weiter verdichtet und tritt in eine letzte Stufe LST ein, um anschließend in der Sammelspirale CC für den Eintritt in die nachfolgenden Maschinenmodule gesammelt zu werden. Die Welle SH ist in zwei Radiallagern BEI, BE2 gelagert. Die Welle SH weist ein erstes Wellenende SEI und ein zweites Wellenende SE2 auf, wobei das erste Wellenende SEI von dem Antrieb D angetrieben ist und das zweite  Process fluid F is axially drawn in by the compressor CO and enters an overhang stage ST, is further compressed downstream by means of impellers IM, and enters a final stage LST to be subsequently collected in the collection coil CC for entry into the subsequent machine modules. The shaft SH is mounted in two radial bearings BEI, BE2. The shaft SH has a first shaft end SEI and a second shaft end SE2, wherein the first shaft end SEI is driven by the drive D and the second
Wellenende SE2 die Überhangstufe ST trägt. Unter einem End of the shaft SE2 carries the overhang ST. Under a
Wellenende SEI, SE2 versteht die Erfindung einen Bereich der Welle, der sich von dem jeweiligen Ende der Welle in Richtung der Wellenmitte erstreckt, wobei etwa ein Drittel der  Shaft end SEI, SE2, the invention means a portion of the shaft extending from the respective end of the shaft in the direction of the shaft center, wherein about one third of the
gesamten Wellenlänge jeweils in der Terminologie der entire wavelength respectively in the terminology of
Erfindung als Wellenende bezeichnet wird. In dem Bereich des ersten Wellenendes SEI ist neben der drehmomentübertragenden Verbindung mit dem Antrieb D auch die Sammelspirale CC, das zweite Radiallager BE2 und eine Wellendichtung SHS Invention is referred to as the shaft end. In the region of the first shaft end SEI, in addition to the torque-transmitting connection with the drive D, the collecting spiral CC, the second radial BE2 and a shaft seal SHS
angeordnet. Während das Gehäuse CC in Erstreckung der arranged. While the housing CC in extension of
Maschinenachse AX eine Teilfuge aufweist, ist die Machine axis AX has a parting line is the
Sammelspirale CC in Erstreckung der Maschinenachse oder parallel dazu ungeteilt und wird mittels ersten  Collecting spiral CC in extension of the machine axis or parallel undivided and is by means of first
Befestigungselementen SM1 an das Gehäuse C angeflanscht. Fastened SM1 to the housing C flanged.
Gleichzeitig ist die Sammelspirale CC Trägerin des zweiten Radiallagers BE2 und der Wellendichtung SHS. Die ungeteilteAt the same time, the collecting spiral CC carries the second radial bearing BE2 and the shaft seal SHS. The undivided one
Ausführung der Sammelspirale, welche als Gussteil ausgebildet ist, hat den Vorteil, dass diese in Umfangsrichtung keinen ansonsten durch eine Teilfuge verursachten Absatz aufweist, der Strömungsverluste verursachen könnte. Die Befestigung des zweiten Radiallagers BE2 und der Wellendichtung SHS an der Sammelspirale CC hat eine möglichst kurze Toleranzkette zwischen dem Radiallager B2 und der Wellendichtung SHS zur Folge, so dass für beispielsweise thermische Ausdehnungen notwendige Radialspiele der Welle SH in der Wellendichtung SHS minimal ausfallen können. Auf diese Weise kann ein besonders guter Wirkungsgrad erzielt werden. Design of the collecting spiral, which is designed as a casting, has the advantage that it does not have any paragraph otherwise caused by a parting line in the circumferential direction, which could cause flow losses. The attachment of the second radial bearing BE2 and the shaft seal SHS to the collecting spiral CC has the shortest possible tolerance chain between the radial bearing B2 and the shaft seal SHS result so that necessary for example thermal expansions radial clearances of the shaft SH in the shaft seal SHS can be minimal. In this way, a particularly good efficiency can be achieved.

Claims

Patentansprüche claims
1. Zentrifugalverdichter (CO) zum Verdichten eines 1. Centrifugal compressor (CO) for compacting a
Fluids (F) , aufweisend: Fluids (F), comprising:
- ein Gehäuse (C) , welches eine sich parallel zu oder entlang einer Maschinenachse (AX) erstreckende Teilfugenebene (SP) aufweist, a housing (C) having a parting plane (SP) extending parallel to or along a machine axis (AX),
- eine sich entlang der Maschinenachse (AX) erstreckende Welle (SH) mit einem ersten Wellenende (SEI) und einem zweiten Wellenende (SE2),  a shaft (SH) extending along the machine axis (AX), having a first shaft end (SEI) and a second shaft end (SE2),
- mindestens ein Laufrad (IM), welches an der Welle (SH) angebracht ist,  at least one impeller (IM) mounted on the shaft (SH),
- eine Sammelspirale (CC) , welche stromabwärts des mindestens einen Laufrades (IM) angeordnet ist und das verdichtete  - A collecting spiral (CC), which downstream of the at least one impeller (IM) is arranged and the compressed
Fluid (F) vor einer Abströmung in ein nachfolgendes Fluid (F) before an outflow into a subsequent
Maschinenmodul sammelt, wobei die Sammelspirale (CC) an dem ersten Wellenende (SEI) angeordnet ist,  Machine module collects, wherein the collecting spiral (CC) is arranged on the first shaft end (SEI),
- ein Antrieb (D) , welcher an dem ersten Wellenende (SEI) angeordnet ist,  a drive (D) which is arranged on the first shaft end (SEI),
- wobei an dem zweiten Wellenende (SE2) eine axiale Ansaugung an einer Überhangstufe (ST) des Zentrifugalverdichters (CO) an der Welle (SH) vorgesehen ist, - wherein at the second shaft end (SE2) an axial suction at an overhang stage (ST) of the centrifugal compressor (CO) on the shaft (SH) is provided,
dadurch gekennzeichnet, characterized,
dass die Sammelspirale (CC) in Umfangsrichtung ungeteilt ausgebildet ist und an das Gehäuse (C) des in that the collecting spiral (CC) is designed to be undivided in the circumferential direction and to the housing (C) of the
Zentrifugalverdichters (CO) angeflanscht ist.  Centrifugal compressor (CO) is flanged.
2. Zentrifugalverdichter (CO) nach Anspruch 1, 2. Centrifugal compressor (CO) according to claim 1,
wobei die Sammelspirale (CC) als Träger eines radialen wherein the collecting spiral (CC) as a carrier of a radial
Lagers (BE2) zur Lagerung Welle (SH) ausgebildet ist. Bearing (BE2) for bearing shaft (SH) is formed.
3. Zentrifugalverdichter (CO), 3. Centrifugal compressor (CO),
wobei die Sammelspirale (CC) als Trägerin einer wherein the collecting spiral (CC) as a wearer of a
Wellendichtung (SHS) zur Abdichtung eines sich in Shaft seal (SHS) for sealing a in
Umfangsrichtung um die Welle (SH) erstreckenden Laufspaltes ausgebildet ist. Circumferentially around the shaft (SH) extending running gap is formed.
EP11721272.0A 2010-05-18 2011-05-12 Centrifugal compressor Not-in-force EP2572108B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010020891 2010-05-18
PCT/EP2011/057660 WO2011144515A1 (en) 2010-05-18 2011-05-12 Centrifugal compressor

Publications (2)

Publication Number Publication Date
EP2572108A1 true EP2572108A1 (en) 2013-03-27
EP2572108B1 EP2572108B1 (en) 2015-08-26

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Country Link
US (1) US20130064659A1 (en)
EP (1) EP2572108B1 (en)
CN (1) CN102893033B (en)
WO (1) WO2011144515A1 (en)

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Also Published As

Publication number Publication date
WO2011144515A1 (en) 2011-11-24
US20130064659A1 (en) 2013-03-14
EP2572108B1 (en) 2015-08-26
CN102893033A (en) 2013-01-23
CN102893033B (en) 2015-06-03

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