EP1546563B1 - Palier d'appui pour pompe centrifuge verticale - Google Patents

Palier d'appui pour pompe centrifuge verticale Download PDF

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Publication number
EP1546563B1
EP1546563B1 EP03807788.9A EP03807788A EP1546563B1 EP 1546563 B1 EP1546563 B1 EP 1546563B1 EP 03807788 A EP03807788 A EP 03807788A EP 1546563 B1 EP1546563 B1 EP 1546563B1
Authority
EP
European Patent Office
Prior art keywords
centrifugal pump
support bearing
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.)
Expired - Lifetime
Application number
EP03807788.9A
Other languages
German (de)
English (en)
Other versions
EP1546563A1 (fr
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/fr
Application granted granted Critical
Publication of EP1546563B1 publication Critical patent/EP1546563B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 by an over the support bearing medium and optionally cooled, the centrifugal pump is driven by a shaft which is guided by a housing surrounding the support bearing and in a housing or housing part belonging to the conveying region of the centrifugal pump, and wherein a shaft seal is provided which separates the area containing the conveying medium from the environment.
  • Pumps of the type discussed 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 mainly 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-guiding housing of the centrifugal pump in a separate housing from this.
  • the support bearing was either lubricated by a stored in the housing grease or oil or it was lubricated by a separately provided medium, such as oil, and possibly also cooled. Thus, this under pressure medium to be added via one pipe to the support bearing and discharged from this. Since the drive shaft of the centrifugal pump was passed over the housing of the support bearing and in the belonging to the delivery area of the centrifugal pump housing, here three different shaft seals were necessary.
  • the US-A-5 413 459 discloses a vertical pump assembly operated in an explosive environment with a magnetic drive. A shaft seal is not available for this pump. From the pump discharge nozzle, a part of the delivery liquid is removed via an external pipeline and a complex lubricant and coolant device integrated therein and fed as a lubricant and coolant flow from the outside into the magnetic coupling. A flowing out of this lubricant flow is used for cooling an axial support bearing.
  • the object thus posed is achieved on the basis of a centrifugal pump of the type cited in the present invention that the housing surrounding the support bearing is connected via the gap formed by the radial bearing with the pressure range of the centrifugal pump and the medium serving for lubrication is fed through this gap to the support bearing , During the discharge of the medium, a pipe connecting the housing with the inlet region of the centrifugal pump, and wherein a shaft seal is arranged on the side facing away from the conveying region of the centrifugal pump side of the support bearing.
  • the solution according to the invention requires no 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 support bearing housing to the flow-guiding housing allows a reduction in the overall length.
  • the in the Fig. 1 shown system 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 delivered by it, coming from a condenser 3 via a line 4 medium is passed through a arranged in an inlet / outlet housing 5 inlet 6 in 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 feedwater tank 12th
  • the centrifugal pump 1 is connected via a drive shaft 13 to the electric motor 2.
  • the drive shaft 13, which carries the impellers of the centrifugal pump 1 is received by a support bearing 14.
  • the in the Fig. 2 embodiment shown has a support bearing 15 which is designed as a mainly axial, but also radial forces receiving rolling bearing.
  • the support bearing 15 is arranged in a housing 16. Via a connection 17, the support bearing 15 is supplied with a lubricating and cooling medium. About a terminal 18, the lubricating and cooling medium is discharged again.
  • shaft seals 19 and 20 are provided on the housing 16. The inlet / outlet housing 5 is sealed by a shaft seal 21.
  • the Fig. 3 shows an embodiment of the invention.
  • the support bearing is formed of two plain bearings: a thrust 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. Via the gap which is formed between the bearing shell 26 and the bushing 27 of the radial bearing 23, conveying medium passes from the outlet region 28 into the interior of the housing 24.
  • the conveying medium lubricates both the radial bearing 23 and the axial bearing 22.
  • the discharge of the medium from the housing 24 is used in the region of the inlet 29 opening pipe 30.
  • the housing 24 is thus constantly flowed through by the medium and thus also the thrust bearing 22 and the radial bearing 23 are continuously cooled. An external lubrication and cooling medium, an external pressure source and an external cooling for the medium are thus saved.

Landscapes

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

Claims (1)

  1. Pompe centrifuge disposée verticalement, comprenant un palier d'appui prévu au-dessus de celle-ci, lequel est divisé en un palier axial (22) et un palier radial (23) et est lubrifié et éventuellement refroidi par le fluide refoulé par la pompe centrifuge, le fluide refoulé étant acheminé au palier d'appui (22, 23) par le biais d'une conduite s'étendant jusqu'à la région de pression (28) de la pompe centrifuge et étant évacué depuis celle-ci, le boîtier (24) entourant le palier axial (22) et le palier radial (23) se raccordant en outre directement au boîtier (25) appartenant à la région de refoulement de la pompe centrifuge, et la région de la pompe centrifuge contenant le fluide refoulé étant fermée hermétiquement par rapport à l'environnement, caractérisée en ce que le boîtier (24) entourant le palier d'appui (22, 23) est connecté à la région de pression (28) de la pompe centrifuge par le biais de la fente formée par le palier radial (23) et le fluide servant à la lubrification est acheminé par le biais de cette fente au palier d'appui (22, 23), tandis que l'évacuation du fluide est réalisée par le biais d'une conduite tubulaire (30) reliant le boîtier (24) et la région d'entrée (29) de la pompe centrifuge, et un joint d'étanchéité d'arbre (31) étant disposé sur le côté du palier d'appui (22, 23) opposé à la région de refoulement de la pompe centrifuge.
EP03807788.9A 2002-10-02 2003-08-12 Palier d'appui pour pompe centrifuge verticale Expired - Lifetime EP1546563B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10245957A DE10245957A1 (de) 2002-10-02 2002-10-02 Traglager für eine vertikal angeordnete Kreiselpumpe
DE10245957 2002-10-02
PCT/EP2003/008919 WO2004033918A1 (fr) 2002-10-02 2003-08-12 Palier d'appui pour pompe centrifuge verticale

Publications (2)

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

Family

ID=32010089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03807788.9A Expired - Lifetime EP1546563B1 (fr) 2002-10-02 2003-08-12 Palier d'appui pour pompe centrifuge verticale

Country Status (4)

Country Link
US (1) US7318707B2 (fr)
EP (1) EP1546563B1 (fr)
DE (1) DE10245957A1 (fr)
WO (1) WO2004033918A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101691871B (zh) * 2008-08-29 2011-03-16 浙江水泵总厂有限公司 立式多级筒袋泵轴向力平衡装置的改进
BRPI0918721A2 (pt) 2008-09-10 2017-02-07 Pentair Pump Group Inc bomba centrifuga multiestágio de alta eficiência e método de montagem
CN103016388B (zh) * 2012-12-29 2015-05-13 山东星源矿山设备集团有限公司 一种大功率高电压干式系列电动机用止推轴承
EP3199815B1 (fr) * 2016-01-26 2020-07-15 Grundfos Holding A/S Pompe centrifuge

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1279471B (de) * 1962-11-12 1968-10-03 Halbergerhuette G M B H Laengslager fuer eine Umwaelz-Kreiselpumpe mit fliegend gelagertem Laufrad
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

Also Published As

Publication number Publication date
DE10245957A1 (de) 2004-04-15
US20050232794A1 (en) 2005-10-20
WO2004033918A1 (fr) 2004-04-22
US7318707B2 (en) 2008-01-15
EP1546563A1 (fr) 2005-06-29

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