EP3430270B1 - Kreiselpumpe mit ausgleichsmittel und verfahren zum axialkraftausgleich der kreiselpumpe - Google Patents

Kreiselpumpe mit ausgleichsmittel und verfahren zum axialkraftausgleich der kreiselpumpe Download PDF

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Publication number
EP3430270B1
EP3430270B1 EP17707915.9A EP17707915A EP3430270B1 EP 3430270 B1 EP3430270 B1 EP 3430270B1 EP 17707915 A EP17707915 A EP 17707915A EP 3430270 B1 EP3430270 B1 EP 3430270B1
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EP
European Patent Office
Prior art keywords
balancing
disc
axial
centrifugal pump
accordance
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EP17707915.9A
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English (en)
French (fr)
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EP3430270A1 (de
Inventor
Matti Koivikko
Kalle Tiitinen
Hannu HEISKANEN
Teemu GÅSMAN
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Sulzer Management AG
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Sulzer Management AG
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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
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/041—Axial thrust balancing
    • 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
    • F04D29/0416—Axial thrust balancing balancing pistons
    • 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
    • F04D29/046—Bearings
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • F04D29/0473—Bearings hydrostatic; hydrodynamic for radial 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/29—Three-dimensional machined; miscellaneous
    • F05D2250/294—Three-dimensional machined; miscellaneous grooved

Claims (10)

  1. Eine Zentrifugalpumpe, umfassend ein Pumpengehäuse mit einem Einlass (12) und einem Auslass (18), eine Welle (14), die abgedichtet und mit Gleitlagern (40) an dem Pumpengehäuse montiert ist, wobei die Welle (14) in axialer Richtung beweglich ist, mindestens ein Laufrad (16), das auf der Welle (14) zur Drehung mit dieser befestigt ist, und ein Mittel (20) zum Ausgleichen von Axialkräften; wobei das Ausgleichsmittel (20) eine Ausgleichsscheibe (22) umfasst, die auf der Welle (14) zur Drehung mit dieser befestigt ist, und einen Außenumfang aufweist, und ein stationäres Gegenelement (28), das in Verbindung mit dem Pumpengehäuse angeordnet ist; wobei die Ausgleichsscheibe (22) und das Gegenelement (28) einen Ausgleichshohlraum (36) zwischen sich belassen; wobei die Ausgleichsscheibe (22) eine erste nicht-axiale Fläche (50, 50') aufweist, die auf den Außenumfang begrenzt ist, und das Gegenelement (28) eine zweite nicht-axiale Fläche (52) aufweist, wobei sich die erste und die zweite nicht-axiale Fläche (50, 50'; 52) gegenüberliegen und einen dünnen Spalt (36') zwischen sich belassen, wobei mindestens eine der ersten und zweiten nicht-axialen Flächen (50, 50'; 52) mit mindestens einer ringförmigen Nut (54, 64, 74, 84', 84", 94') versehen ist, wobei eine Drosselung stromabwärts der Ausgleichsscheibe (22) angeordnet ist, dadurch gekennzeichnet, dass das Gegenelement (28) mit einem Gegenring (26) versehen ist, der die zweite nicht-axiale Fläche (52) aufweist und/oder die Ausgleichsscheibe (22) mit einem kranzförmigen Ring (86) versehen ist, der die erste nicht-axiale Fläche (50') aufweist.
  2. Die Zentrifugalpumpe nach Anspruch 1, dadurch gekennzeichnet, dass mindestens eine der ersten und zweiten nicht-axialen Flächen (50, 50'; 52) mit kreisförmigen Ringen (94) zum Bilden von ringförmigen Nuten (94') zwischen sich versehen ist.
  3. Die Zentrifugalpumpe nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die ringförmige Nut (54, 64, 74, 84', 84", 94') eine Tiefe aufweist, wobei die Tiefe mindestens das 10-fache derjenigen des dünnen Spalts (36') beträgt.
  4. Die Zentrifugalpumpe nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die ringförmige Nut (54, 64, 74, 84', 84", 94') eine Abmessung von 1 bis 10 Millimetern in einer Richtung im rechten Winkel zu der ersten und der zweiten nicht-axialen Fläche (50; 52) aufweist.
  5. Die Zentrifugalpumpe nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die ringförmige Nut (54, 64, 74, 84', 84", 94') eine Abmessung von 1 bis 10 Millimetern in einer Richtung parallel zu der ersten und der zweiten nicht-axialen Fläche (50; 52) aufweist.
  6. Die Zentrifugalpumpe nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Gegenelement (28) die Rückwand der Zentrifugalpumpe ist.
  7. Die Zentrifugalpumpe nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass eine Nut in der Ausgleichsscheibe (22) einer Nut in dem Gegenelement (28) gegenüberliegt.
  8. Die Zentrifugalpumpe nach Anspruch 1, dadurch gekennzeichnet, dass die Drosselung stromabwärts eines Hohlraums (38) angeordnet ist, der stromabwärts der Ausgleichsscheibe (22) liegt.
  9. Die Zentrifugalpumpe nach Anspruch 1, dadurch gekennzeichnet, dass die Drosselung stromabwärts des Ausgleichsmittels (20) eines von einem Gleitlager, einem Ventil und einer Leitung mit einem geeigneten Strömungsquerschnitt ist.
  10. Ein Verfahren zum Ausgleichen eines Axialschubs einer Zentrifugalpumpe nach Anspruch 1, wobei das Verfahren den Schritt umfasst von:
    • Anordnen einer Drosselung stromabwärts der Ausgleichsscheibe (22) zum Steuern der Menge an Flüssigkeit, die über das Ausgleichsmittel (20) austritt, und
    • Versehen des Gegenelements (28) mit einem Gegenring (26), der die zweite nicht-axiale Fläche (52) aufweist, und/oder
    • Versehen der Ausgleichsscheibe (22) mit einem kranzförmigen Ring (86), der die erste nicht-axiale Fläche (50') aufweist.
EP17707915.9A 2016-03-17 2017-03-06 Kreiselpumpe mit ausgleichsmittel und verfahren zum axialkraftausgleich der kreiselpumpe Active EP3430270B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16160876 2016-03-17
PCT/EP2017/055118 WO2017157702A1 (en) 2016-03-17 2017-03-06 A centrifugal pump with balancing means and a method of balancing axial forces of the centrifugal pump

Publications (2)

Publication Number Publication Date
EP3430270A1 EP3430270A1 (de) 2019-01-23
EP3430270B1 true EP3430270B1 (de) 2019-11-13

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EP17707915.9A Active EP3430270B1 (de) 2016-03-17 2017-03-06 Kreiselpumpe mit ausgleichsmittel und verfahren zum axialkraftausgleich der kreiselpumpe

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US (1) US20190063450A1 (de)
EP (1) EP3430270B1 (de)
CN (1) CN108779782A (de)
BR (1) BR112018068267A2 (de)
RU (1) RU2018132444A (de)
WO (1) WO2017157702A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019206580A1 (en) 2018-04-25 2019-10-31 Sulzer Management Ag A balance ring, a balancing device, a centrifugal pump and a method of balancing an axial thrust of the centrifugal pump
CN109058103A (zh) * 2018-09-25 2018-12-21 宁波鲍斯能源装备股份有限公司 喷水式螺杆压缩机
DE102019001120A1 (de) * 2019-02-15 2020-08-20 KSB SE & Co. KGaA Entlastungseinrichtung
CN114508393B (zh) * 2021-12-27 2023-07-18 东方电气集团东方汽轮机有限公司 甩负荷时轴向推力为零的汽缸、一次及二次再热汽轮机
CN116447166A (zh) * 2023-04-19 2023-07-18 烟台东德实业有限公司 一种空气压缩机叶轮轴向力平衡方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1499056A (en) * 1922-07-05 1924-06-24 Hollander Aladar Centrifugal pump

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE539225C (de) * 1931-11-26 Georg Weyland Axialschubentlastung mittels stufenfoermiger Entlastungsscheiben
DE470581C (de) * 1924-05-15 1929-01-22 Ernst Holland Vorrichtung zur Axialdruckentlastung
DE867933C (de) * 1941-03-09 1953-03-05 Siemens Ag Pump-Spaltdichtung
DE1082803B (de) * 1957-04-27 1960-06-02 Rudolf Duemmerling Entlastungsscheibenpaar fuer mehrstufige Kreiselpumpen
US6309174B1 (en) * 1997-02-28 2001-10-30 Fluid Equipment Development Company, Llc Thrust bearing for multistage centrifugal pumps
DE10058499A1 (de) * 2000-11-24 2002-05-29 Ksb Ag Gleitlager für eine Kreiselpumpe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1499056A (en) * 1922-07-05 1924-06-24 Hollander Aladar Centrifugal pump

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Publication number Publication date
BR112018068267A2 (pt) 2019-01-15
WO2017157702A1 (en) 2017-09-21
RU2018132444A3 (de) 2020-05-19
RU2018132444A (ru) 2020-04-17
EP3430270A1 (de) 2019-01-23
CN108779782A (zh) 2018-11-09
US20190063450A1 (en) 2019-02-28

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