EP1546563A1 - Support bearing for a vertical centrifugal pump - Google Patents

Support bearing for a vertical centrifugal pump

Info

Publication number
EP1546563A1
EP1546563A1 EP03807788A EP03807788A EP1546563A1 EP 1546563 A1 EP1546563 A1 EP 1546563A1 EP 03807788 A EP03807788 A EP 03807788A EP 03807788 A EP03807788 A EP 03807788A EP 1546563 A1 EP1546563 A1 EP 1546563A1
Authority
EP
European Patent Office
Prior art keywords
centrifugal pump
bearing
support bearing
housing
medium
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
EP03807788A
Other languages
German (de)
French (fr)
Other versions
EP1546563B1 (en
Inventor
Wolfgang Scharffenberger
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.)
KSB AG
Original Assignee
KSB 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 KSB AG filed Critical KSB AG
Publication of EP1546563A1 publication Critical patent/EP1546563A1/en
Application granted granted Critical
Publication of EP1546563B1 publication Critical patent/EP1546563B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/041—Axial thrust balancing
    • F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust bearings
    • 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
    • F04D29/06—Lubrication
    • F04D29/061—Lubrication especially adapted for liquid 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
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft sealings especially adapted for liquid pumps

Definitions

  • the invention relates to a vertically arranged centrifugal pump with a support bearing provided above it, which absorbs the axial and radial forces exerted by the centrifugal pump and which is lubricated and possibly cooled by a medium passed through the support bearing, the centrifugal pump being driven by a shaft , which is guided through a housing surrounding the support bearing and into a housing or housing part belonging to the delivery area of the centrifugal pump, and wherein a shaft seal is provided which separates the area containing the delivery medium from the environment.
  • Pumps of the type mentioned here have one or more stages, which are usually arranged in a pot.
  • the pumps are used, for example, as condensate pumps.
  • the support bearing of such a pump is primarily exposed to an axial load, but also has to absorb radial forces. So far, it has been customary to arrange the support bearing above the flow-bearing housing of the centrifugal pump in a separate housing.
  • the support bearing was either lubricated by a grease or oil stored in the housing or it was lubricated by a separately provided medium, for example oil, and possibly also cooled. So this medium to be pressurized was piped to the
  • the support bearing is divided into a thrust bearing and a radial bearing
  • the housing surrounding the support bearing is directly connected to the housing belonging to the delivery area of the centrifugal pump
  • the lubrication and any cooling that may be necessary is carried out by the delivery medium of the centrifugal pump
  • the shaft seal is arranged on the side of the support bearing facing away from the delivery area of the centrifugal pump.
  • the solution according to the invention does not require any foreign medium for the lubrication and cooling of the support bearing. This means a considerable saving and the elimination of a possible source of interference.
  • the direct connection of the bearing housing to the flow-bearing housing allows a reduction in the overall length.
  • Figure 1 shows a part of a condensate and feed water circuit, which is equipped with a centrifugal pump of the generic type.
  • FIG 3 shows the upper area of a centrifugal pump designed according to the invention.
  • the system shown in FIG. 1 is equipped with a centrifugal pump 1 which is driven by an electric motor 2.
  • the centrifugal pump 1 has five stages.
  • the medium to be conveyed by it, coming from a condenser 3 via a line 4, is guided via an inlet 6 arranged in an inlet / outlet housing 5 into a pot 7, from where it is sucked in via a pump inlet 8.
  • the centrifugal pump 1 conveys the medium into a pressure pipe 9 and from there via an outlet 10 and a line 11 to a feed water tank 12.
  • the centrifugal pump 1 is connected to the electric motor 2 via a drive shaft 13.
  • the drive shaft 13, which carries the impellers of the centrifugal pump 1, is received by a support bearing 14.
  • the embodiment shown in FIG. 2 has a support bearing 15, which is designed as a roller bearing that absorbs primarily axial but also radial forces.
  • the support bearing 15 is arranged in a housing 16.
  • the support bearing 15 is supplied with a lubricating and cooling medium via a connection 17.
  • the lubricating and cooling medium is discharged again via a connection 18.
  • shaft seals 19 and 20 are provided on the housing 16.
  • the inlet / outlet housing 5 is sealed by a shaft seal 21.
  • the support bearing is formed from two slide bearings: an axial bearing 22 and a radial bearing 23.
  • the support bearing is surrounded by a housing 24 which is placed directly on the inlet / outlet housing 25.
  • Delivery medium passes through the gap which is formed between the bearing shell 26 and the bushing 27 of the radial bearing 23 from the outlet area 28 into the interior of the housing 24.
  • the pumped medium lubricates both the radial bearing 23 and the axial bearing 22.
  • the discharge of the medium from the housing 24 is served by a pipeline 30 opening in the region of the inlet 29. The housing 24 thus becomes permanent flows through the medium and thus the thrust bearing 22 and
  • Radial bearing 23 continuously cooled. An external lubrication and cooling medium, an external pressure source and an external cooling for the medium are thus saved.

Abstract

The invention concerns a vertical centrifugal pump comprising a support bearing, arranged above the pump and consisting of an axial bearing (22) and a radial bearing (23). A housing (24) encasing the support bearing (22, 23) is directly connected to the case (25) of the centrifugal pump delivery zone. Lubrication and an optionally required cooling are performed by the pumping medium, which is sent to the support bearing (22, 23) through a connection leading to the pump compression zone (28), wherefrom it is evacuated into the pump suction zone (29). The shaft seals (31) are mounted on the surface of the support bearing (22, 23) opposite the centrifugal pump delivery zone.

Description

K S B A k t i e n g e s e l l s c h a f t K S B A c t i e n e s e l l s c h a f t
Beschreibungdescription
Traglager für eine vertikal angeordnete KreiselpumpeSupport bearing for a vertically arranged centrifugal pump
Gegenstand der Erfindung ist eine vertikal angeordnete Kreiselpumpe mit einem oberhalb von ihr vorgesehenen Traglager, das die durch die Kreiselpumpe ausgeübten Axial- und Radialkräfte aufnimmt und das durch ein über das Traglager geleitetes Medium geschmiert und gegebenenfalls gekühlt wird, wobei die Kreiselpumpe über eine Welle angetrieben wird, die durch ein das Traglager umgebendes Gehäuse und in ein zum Förderbereich der Kreiselpumpe gehörendes Gehäuse oder Gehäuseteil geführt ist, und wobei eine Wellenabdichtung vorgesehen ist, die den das Fördermedium enthaltenden Bereich von der Umgebung trennt.The invention relates to a vertically arranged centrifugal pump with a support bearing provided above it, which absorbs the axial and radial forces exerted by the centrifugal pump and which is lubricated and possibly cooled by a medium passed through the support bearing, the centrifugal pump being driven by a shaft , which is guided through a housing surrounding the support bearing and into a housing or housing part belonging to the delivery area of the centrifugal pump, and wherein a shaft seal is provided which separates the area containing the delivery medium from the environment.
Pumpen der hier angesprochenen Art besitzen eine oder mehrere Stufen, die meist in einem Topf angeordnet sind. Die Pumpen werden beispielsweise als Kondensatpumpen eingesetzt. Das Traglager einer solchen Pumpe ist vor allem einer axialen Belastung ausgesetzt, hat aber auch radiale Kräfte aufzunehmen. Bisher war es üblich, das Traglager oberhalb des strömungsführenden Gehäuses der Kreiselpumpe in einem von diesem getrennten Gehäuse anzuordnen. Das Traglager wurde entweder durch ein im Gehäuse gespeichertes Fett oder Öl geschmiert oder es wurde von einem gesondert bereitgestellten Medium, beispielsweise Öl, geschmiert und unter Umständen auch gekühlt. So wurde dieses unter Druck zu setzende Medium über jeweils eine Rohrleitung demPumps of the type mentioned here have one or more stages, which are usually arranged in a pot. The pumps are used, for example, as condensate pumps. The support bearing of such a pump is primarily exposed to an axial load, but also has to absorb radial forces. So far, it has been customary to arrange the support bearing above the flow-bearing housing of the centrifugal pump in a separate housing. The support bearing was either lubricated by a grease or oil stored in the housing or it was lubricated by a separately provided medium, for example oil, and possibly also cooled. So this medium to be pressurized was piped to the
Traglager zu- und von diesem abgeführt. Da die Antriebswelle der Kreiselpumpe über das Gehäuse des Traglagers und in das zum Förderbereich der Kreiselpumpe gehörende Gehäuse geführt wurde, waren hier drei verschiedene Wellenabdichtungen notwendig.Support bearing supplied and removed from this. Since the drive shaft of the centrifugal pump was guided over the housing of the support bearing and into the housing belonging to the delivery area of the centrifugal pump, three different shaft seals were necessary here.
Vor allem der bei der geschilderten Ausführung zu treibende Aufwand für die Bereitstellung sowie Zu- und Abführung eines gesonderten Schmier- und Kühlmittels für das Traglager, aber auch der Aufwand für die verschiedenen Wellenabdichtungen ließen den Wunsch entstehen, eine Ausführung zu schaffen, die diesen Aufwand entscheidend verringert. Die der Erfindung zugrundeliegende Aufgabe basiert auf diesem Wunsch.Above all, the effort to be made in the described embodiment for the provision and supply and removal of a separate lubricant and coolant for the support bearing, but also the effort for the various Shaft seals gave rise to the desire to create a version that significantly reduces this effort. The object underlying the invention is based on this desire.
Die somit gestellte Aufgabe wird ausgehend von einer Kreiselpumpe der eingangs zitierten Art erfindungsgemäß dadurch gelöst, daßThe object thus achieved is achieved on the basis of a centrifugal pump of the type cited in the invention in that
a) das Traglager in ein Axiallager und ein Radiallager unterteilt ist, b) das das Traglager umgebende Gehäuse unmittelbar an das zum Förderbereich der Kreiselpumpe gehörende Gehäuse anschließt, c) die Schmierung und eine gegebenenfalls notwendige Kühlung durch das Fördermedium der Kreiselpumpe erfolgt, d) das Fördermedium dem Traglager über eine zum Druckbereich der Kreiselpumpe verlaufende Verbindung zugeführt und von dort in den Saugbereich der Kreiselpumpe abgeführt wird, e) die Wellenabdichtung auf der vom Förderbereich der Kreiselpumpe abgewandten Seite des Traglagers angeordnet ist.a) the support bearing is divided into a thrust bearing and a radial bearing, b) the housing surrounding the support bearing is directly connected to the housing belonging to the delivery area of the centrifugal pump, c) the lubrication and any cooling that may be necessary is carried out by the delivery medium of the centrifugal pump, d) that Pumped medium is fed to the support bearing via a connection running to the pressure area of the centrifugal pump and is discharged from there into the suction area of the centrifugal pump, e) the shaft seal is arranged on the side of the support bearing facing away from the delivery area of the centrifugal pump.
Die erfindungsgemäße Lösung erfordert kein Fremdmedium für die Schmierung und Kühlung des Traglagers. Dies bedeutet eine erhebliche Einsparung und die Beseitigung einer möglichen Störquelle. Der unmittelbare Anschluß des Traglagergehäuses an das strömungsführende Gehäuse erlaubt eine Verringerung der Baulänge.The solution according to the invention does not require any foreign medium for the lubrication and cooling of the support bearing. This means a considerable saving and the elimination of a possible source of interference. The direct connection of the bearing housing to the flow-bearing housing allows a reduction in the overall length.
Es wird als zweckmäßigste Lösung angesehen, wenn das Axiallager und das Radiallager durch Gleitlager gebildet werden. Dies eröffnet im übrigen die Möglichkeit, das das Traglager umgebende Gehäuse über den von dem Radiallager gebildeten Spalt mit dem Förderbereich der Kreiselpumpe zu verbinden, um das der Schmierung dienende Medium über diesen Spalt dem Traglager zuzuführen. Hieraus ergibt sich der Vorzug, daß anstelle der bisher notwendigen drei Wellenabdichtungen nur noch eine erforderlich ist.It is considered the most expedient solution if the thrust bearing and the radial bearing are formed by plain bearings. This also opens up the possibility of connecting the housing surrounding the support bearing to the delivery area of the centrifugal pump via the gap formed by the radial bearing, in order to supply the lubrication medium to the support bearing via this gap. This results in the advantage that instead of the three shaft seals previously required, only one is required.
Anhand eines Ausführungsbeispiels wird die Erfindung näher erläutert. Es zeigt Fig. 1 einen Teil eines Kondensat- und Speisewasserkreislaufs, der mit einer Kreiselpumpe der gattungsgemäßen Art ausgestattet ist;The invention is explained in more detail using an exemplary embodiment. It shows Figure 1 shows a part of a condensate and feed water circuit, which is equipped with a centrifugal pump of the generic type.
Fig. 2 eine mit einem Traglager der vorbekannten Bauart ausgestattete Kreiselpumpe;2 shows a centrifugal pump equipped with a support bearing of the known type;
Fig. 3 den oberen Bereich einer erfindungsgemäß gestalteten Kreiselpumpe.3 shows the upper area of a centrifugal pump designed according to the invention.
Die in der Fig. 1 dargestellte Anlage ist mit einer Kreiselpumpe 1 ausgestattet, die durch einen Elektromotor 2 angetrieben wird. Die Kreiselpumpe 1 besitzt fünf Stufen. Das von ihr zu fördernde, von einem Kondensator 3 über eine Leitung 4 kommende Medium wird über einen in einem Ein-/Auslaufgehäuse 5 angeordneten Einlauf 6 in einen Topf 7 geführt, von wo es über einen Pumpeneinlaß 8 angesaugt wird. Die Kreiselpumpe 1 fördert das Medium in ein Druckrohr 9 und von dort aus über einen Auslaß 10 und eine Leitung 11 zu einem Speisewasserbehälter 12.The system shown in FIG. 1 is equipped with a centrifugal pump 1 which is driven by an electric motor 2. The centrifugal pump 1 has five stages. The medium to be conveyed by it, coming from a condenser 3 via a line 4, is guided via an inlet 6 arranged in an inlet / outlet housing 5 into a pot 7, from where it is sucked in via a pump inlet 8. The centrifugal pump 1 conveys the medium into a pressure pipe 9 and from there via an outlet 10 and a line 11 to a feed water tank 12.
Die Kreiselpumpe 1 ist über eine Antriebswelle 13 mit dem Elektromotor 2 verbunden. Die Antriebswelle 13, die die Laufräder der Kreiselpumpe 1 trägt, wird von einem Traglager 14 aufgenommen.The centrifugal pump 1 is connected to the electric motor 2 via a drive shaft 13. The drive shaft 13, which carries the impellers of the centrifugal pump 1, is received by a support bearing 14.
Die in der Fig. 2 dargestellte Ausführung besitzt ein Traglager 15, das als ein vor allem axiale, aber auch radiale Kräfte aufnehmendes Wälzlager ausgelegt ist. Das Traglager 15 ist in einem Gehäuse 16 angeordnet. Über einen Anschluß 17 wird das Traglager 15 mit einem Schmier- und Kühlmedium versorgt. Über einen Anschluß 18 wird das Schmier- und Kühlmedium wieder abgeführt. Um einen Austritt des Mediums in die Umgebung zu verhindern, sind Wellendichtungen 19 und 20 am Gehäuse 16 vorgesehen. Das Ein-/Auslaufgehäuse 5 ist durch eine Wellendichtung 21 abgedichtet.The embodiment shown in FIG. 2 has a support bearing 15, which is designed as a roller bearing that absorbs primarily axial but also radial forces. The support bearing 15 is arranged in a housing 16. The support bearing 15 is supplied with a lubricating and cooling medium via a connection 17. The lubricating and cooling medium is discharged again via a connection 18. In order to prevent the medium from escaping into the surroundings, shaft seals 19 and 20 are provided on the housing 16. The inlet / outlet housing 5 is sealed by a shaft seal 21.
Die Fig. 3 zeigt eine erfindungsgemäße Ausführung. Hier wird das Traglager aus zwei Gleitlagern gebildet: einem Axiallager 22 und einem Radiallager 23. Das Traglager ist von einem Gehäuse 24 umgeben, das unmittelbar auf das Ein- /Auslaufgehäuse 25 aufgesetzt ist. Über den Spalt, der zwischen der Lagerschale 26 und der Buchse 27 des Radiallagers 23 gebildet wird, gelangt Fördermedium aus dem Auslaufbereich 28 in das Innere des Gehäuses 24. Somit schmiert das Fördermedium sowohl das Radiallager 23 als auch das Axiallager 22. Der Abführung des Mediums aus dem Gehäuse 24 dient eine im Bereich des Einlaufs 29 mündende Rohrleitung 30. Das Gehäuse 24 wird somit ständig von dem Medium durchströmt und somit werden auch das Axiallager 22 und das3 shows an embodiment according to the invention. Here the support bearing is formed from two slide bearings: an axial bearing 22 and a radial bearing 23. The support bearing is surrounded by a housing 24 which is placed directly on the inlet / outlet housing 25. Delivery medium passes through the gap which is formed between the bearing shell 26 and the bushing 27 of the radial bearing 23 from the outlet area 28 into the interior of the housing 24. Thus, the pumped medium lubricates both the radial bearing 23 and the axial bearing 22. The discharge of the medium from the housing 24 is served by a pipeline 30 opening in the region of the inlet 29. The housing 24 thus becomes permanent flows through the medium and thus the thrust bearing 22 and
Radiallager 23 unausgesetzt gekühlt. Ein externes Schmier- und Kühlmedium, eine externe Druckquelle und eine externe Kühlung für das Medium werden also eingespart.Radial bearing 23 continuously cooled. An external lubrication and cooling medium, an external pressure source and an external cooling for the medium are thus saved.
Die in der Fig. 3 dargestellte erfindungsgemäße Ausführung benötigt imThe embodiment according to the invention shown in FIG. 3 requires in
Gegensatz zu der vorbekannten Ausführung der Fig. 2 nur eine Wellenabdichtung 31 am Austritt der Antriebswelle 13 in die Umgebung. Hieraus ergibt sich eine weitere Einsparung. Schließlich bleibt noch erwähnen, daß die erfindungsgemäße Ausführung eine kürzere Erstreckung besitzt als die vorbekannte Gestaltung. In contrast to the previously known embodiment of FIG. 2, only one shaft seal 31 at the outlet of the drive shaft 13 into the environment. This results in further savings. Finally, it should also be mentioned that the design according to the invention has a shorter extension than the previously known design.

Claims

Patentansprüche claims
1. Vertikal angeordnete Kreiselpumpe mit einem oberhalb von ihr vorgesehenen Traglager, das die durch die Kreiselpumpe ausgeübten Axial- und Radialkräfte aufnimmt und das durch ein über das Traglager geleitetes1. Vertically arranged centrifugal pump with a support bearing provided above it, which absorbs the axial and radial forces exerted by the centrifugal pump and that which is guided by the support bearing
Medium geschmiert und gegebenenfalls gekühlt wird, wobei die Kreiselpumpe über eine Welle angetrieben wird, die durch ein das Traglager umgebendes Gehäuse und in ein zum Förderbereich der Kreiselpumpe gehörendes Gehäuse oder Gehäuseteil geführt ist, und wobei eine Wellenabdichtung vorgesehen ist, die den das Fördermedium enthaltendenMedium is lubricated and optionally cooled, the centrifugal pump being driven via a shaft which is guided through a housing surrounding the support bearing and into a housing or housing part belonging to the delivery area of the centrifugal pump, and a shaft seal being provided which contains the medium to be conveyed
Bereich von der Umgebung trennt, dadurch gekennzeichnet, daßArea separates from the environment, characterized in that
a) das Traglager in ein Axiallager (22) und ein Radiallager (23) unterteilt ist, b) das das Traglager (22, 23) umgebende Gehäuse ( 24) unmittelbar an das zum Förderbereich der Kreiselpumpe gehörende Gehäuse (25) anschließt, c) die Schmierung und eine gegebenenfalls notwendige Kühlung durch das Fördermedium der Kreiselpumpe erfolgt, d) das Fördermedium dem Traglager (22, 23) über eine zuma) the support bearing is divided into an axial bearing (22) and a radial bearing (23), b) the housing (24) surrounding the support bearing (22, 23) is directly connected to the housing (25) belonging to the delivery area of the centrifugal pump, c) the lubrication and any cooling that may be required is carried out by the pumped medium of the centrifugal pump, d) the pumped medium to the support bearing (22, 23) via a
Druckbereich (28) der Kreiselpumpe verlaufende Verbindung zugeführt und von dort in den Saugbereich (29) der Kreiselpumpe abgeführt wird, e) die Wellenabdichtung (31 ) auf der vom Förderbereich der Kreiselpumpe abgewandten Seite des Traglagers (22, 23) angeordnet ist.Pressure area (28) of the connection to the centrifugal pump is fed and discharged from there into the suction area (29) of the centrifugal pump, e) the shaft seal (31) is arranged on the side of the support bearing (22, 23) facing away from the conveying area of the centrifugal pump.
2. Kreiselpumpe nach Anspruch 1 , dadurch gekennzeichnet, daß das Axiallager2. Centrifugal pump according to claim 1, characterized in that the axial bearing
(22) und das Radiallager (23) durch Gleitlager gebildet werden.(22) and the radial bearing (23) are formed by plain bearings.
3. Kreiselpumpe nach Anspruch 2, dadurch gekennzeichnet, daß das das Traglager (22, 23) umgebende Gehäuse (24) über den von dem Radiallager3. Centrifugal pump according to claim 2, characterized in that the bearing (22, 23) surrounding the housing (24) via the radial bearing
(23) gebildeten Spalt mit dem Druckbereich (28) der Kreiselpumpe verbunden ist und das der Schmierung dienende Medium über diesen Spalt dem Traglager (22, 23) zugeführt wird. (23) formed gap is connected to the pressure region (28) of the centrifugal pump and the medium used for lubrication is supplied to the support bearing (22, 23) via this gap.
EP03807788.9A 2002-10-02 2003-08-12 Support bearing for a vertical centrifugal pump Expired - Lifetime EP1546563B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10245957 2002-10-02
DE10245957A DE10245957A1 (en) 2002-10-02 2002-10-02 Thrust bearing for a vertical rotary pump has a combined thrust and radial bearing cooled and lubricated by the pumped liquid
PCT/EP2003/008919 WO2004033918A1 (en) 2002-10-02 2003-08-12 Support bearing for a vertical centrifugal pump

Publications (2)

Publication Number Publication Date
EP1546563A1 true EP1546563A1 (en) 2005-06-29
EP1546563B1 EP1546563B1 (en) 2013-10-02

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EP03807788.9A Expired - Lifetime EP1546563B1 (en) 2002-10-02 2003-08-12 Support bearing for a vertical centrifugal pump

Country Status (4)

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US (1) US7318707B2 (en)
EP (1) EP1546563B1 (en)
DE (1) DE10245957A1 (en)
WO (1) WO2004033918A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101691871B (en) * 2008-08-29 2011-03-16 浙江水泵总厂有限公司 Improvement on axial thrust balancing device of vertical multistage barrel pump
CA2736952C (en) 2008-09-10 2016-11-29 Pentair Pump Group, Inc. High-efficiency, multi-stage centrifugal pump and method of assembly
CN103016388B (en) * 2012-12-29 2015-05-13 山东星源矿山设备集团有限公司 Thrust bearing for high-power high-voltage dry motor
EP3199815B1 (en) * 2016-01-26 2020-07-15 Grundfos Holding A/S Centrifugal pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1279471B (en) * 1962-11-12 1968-10-03 Halbergerhuette G M B H Longitudinal bearing for a circulating centrifugal pump with an overhung impeller
US3220352A (en) * 1962-12-03 1965-11-30 Atkinson Guy F Co Pump lubrication system
US3171355A (en) * 1963-03-14 1965-03-02 Dresser Ind Well pump
US3482522A (en) * 1968-01-15 1969-12-09 Baker Mfg Co Pitless booster pump unit
US4234290A (en) * 1978-11-30 1980-11-18 Binks Manufacturing Company Turbine pump
US5413459A (en) * 1991-10-01 1995-05-09 Crane Co. Verticle turbine pump
US5961301A (en) * 1997-07-31 1999-10-05 Ansimag Incorporated Magnetic-drive assembly for a multistage centrifugal pump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004033918A1 *

Also Published As

Publication number Publication date
WO2004033918A1 (en) 2004-04-22
DE10245957A1 (en) 2004-04-15
US20050232794A1 (en) 2005-10-20
EP1546563B1 (en) 2013-10-02
US7318707B2 (en) 2008-01-15

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