US3771910A - Axial thrust compensation for centrifugal pumps - Google Patents

Axial thrust compensation for centrifugal pumps Download PDF

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Publication number
US3771910A
US3771910A US3771910DA US3771910A US 3771910 A US3771910 A US 3771910A US 3771910D A US3771910D A US 3771910DA US 3771910 A US3771910 A US 3771910A
Authority
US
United States
Prior art keywords
impeller
bearing
centrifugal pump
casing
separating wall
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
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English (en)
Inventor
N Laing
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Individual
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Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3771910A publication Critical patent/US3771910A/en
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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F04D13/026—Details of the 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • 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
    • F04D29/0467—Spherical 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
    • F04D29/18—Rotors
    • F04D29/186—Shaftless rotors
    • 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
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/02—Sliding-contact bearings
    • F16C23/04—Sliding-contact bearings self-adjusting
    • F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
    • F16C17/18—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with floating brasses or brushing, rotatable at a reduced speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/44—Centrifugal pumps

Definitions

  • the seal element 20 is relatively much larger in effective area, corresponding to the larger projected area of the eye 3; the area of the shroud is proportionately less.
  • the seal element 20 is screwed on to the tubular axial extension 22 of the wall 14.
  • the element 20 is notched as at 21 for the engagement of a tool for which access is provided by the hole 16.
  • the size of the element 20 is now such that it could not effectively seal in a cylinder as in FIG. 1, so the mass 15 is provided with a spherically formed liner 23 with which the margin of the element 20 forms a small but constant clearance.
  • the function of the design is the same as in the FIG. 1 example.
  • a centrifugal pump according to claim 1 wherein said impeller has a convex spherical surface, said separating wall has a concave spherical surface closely spaced with respect to said convex surface, and wherein said sealing means comprises an annular element fixed to said separating wall, said element being closely spaced from a circular surface on said impeller.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US3771910D 1970-09-11 1971-09-08 Axial thrust compensation for centrifugal pumps Expired - Lifetime US3771910A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT826070A AT305778B (de) 1970-09-11 1970-09-11 Kreiselpumpe

Publications (1)

Publication Number Publication Date
US3771910A true US3771910A (en) 1973-11-13

Family

ID=3603895

Family Applications (1)

Application Number Title Priority Date Filing Date
US3771910D Expired - Lifetime US3771910A (en) 1970-09-11 1971-09-08 Axial thrust compensation for centrifugal pumps

Country Status (7)

Country Link
US (1) US3771910A (cg-RX-API-DMAC10.html)
JP (1) JPS55170492U (cg-RX-API-DMAC10.html)
AT (1) AT305778B (cg-RX-API-DMAC10.html)
DE (1) DE2135529C3 (cg-RX-API-DMAC10.html)
FR (1) FR2109770A5 (cg-RX-API-DMAC10.html)
GB (1) GB1326305A (cg-RX-API-DMAC10.html)
SE (1) SE368604B (cg-RX-API-DMAC10.html)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043706A (en) * 1973-06-05 1977-08-23 Alan John Walker Bearing support structure for electro-magnet driven pump
US4462752A (en) * 1981-07-17 1984-07-31 Karsten Laing In-line centrifugal pump
US4984972A (en) * 1989-10-24 1991-01-15 Minnesota Mining And Manufacturing Co. Centrifugal blood pump
US5795127A (en) * 1995-10-20 1998-08-18 Tecumseh Products Company Vertical shaft self-priming centrifugal pump
FR2788313A1 (fr) * 1999-01-13 2000-07-13 Technicatome Pompe centrifuge a moteur discoidal integre destinee a la circulation d'ammoniac dans un satellite
US6264440B1 (en) * 1998-10-29 2001-07-24 Innovative Mag-Drive, L.L.C. Centrifugal pump having an axial thrust balancing system
US6416215B1 (en) 1999-12-14 2002-07-09 University Of Kentucky Research Foundation Pumping or mixing system using a levitating magnetic element
US6758593B1 (en) 2000-10-09 2004-07-06 Levtech, Inc. Pumping or mixing system using a levitating magnetic element, related system components, and related methods
WO2005090792A1 (de) * 2004-03-18 2005-09-29 Medos Medizintechnik Ag Pumpe
US20060024182A1 (en) * 2004-03-18 2006-02-02 Mustafa Akdis Pump
US20110002794A1 (en) * 2009-07-06 2011-01-06 Levitronix Gmbh Centrifugal pump and method for compensating the axial thrust in a centrifugal pump
US20130338559A1 (en) * 2010-02-17 2013-12-19 Novita Therapeutics, Llc Blood pump systems and methods
US20140134012A1 (en) * 2012-11-15 2014-05-15 Samsung Electro-Mechanics Co., Ltd. Impeller and electric blower having the same
CN104179694A (zh) * 2014-08-29 2014-12-03 夏善胜 新型直流无阻泵
US9539380B2 (en) 2011-08-17 2017-01-10 Flow Forward Medical, Inc. System and method to increase the overall diameter of veins and arteries
US9662431B2 (en) 2010-02-17 2017-05-30 Flow Forward Medical, Inc. Blood pump systems and methods
US10258730B2 (en) 2012-08-17 2019-04-16 Flow Forward Medical, Inc. Blood pump systems and methods
US10260558B2 (en) * 2015-10-08 2019-04-16 Skf Magnetic Mechatronics Rotary machine having magnetic and mechanical bearings
US10293089B2 (en) 2010-02-17 2019-05-21 Flow Forward Medical, Inc. System and method to increase the overall diameter of veins
US10426878B2 (en) 2011-08-17 2019-10-01 Flow Forward Medical, Inc. Centrifugal blood pump systems
US11371326B2 (en) 2020-06-01 2022-06-28 Saudi Arabian Oil Company Downhole pump with switched reluctance motor
US11499563B2 (en) 2020-08-24 2022-11-15 Saudi Arabian Oil Company Self-balancing thrust disk
US11534593B2 (en) 2016-04-29 2022-12-27 Artio Medical, Inc. Conduit tips and systems and methods for use
US11591899B2 (en) 2021-04-05 2023-02-28 Saudi Arabian Oil Company Wellbore density meter using a rotor and diffuser
US11644351B2 (en) 2021-03-19 2023-05-09 Saudi Arabian Oil Company Multiphase flow and salinity meter with dual opposite handed helical resonators
US11913464B2 (en) 2021-04-15 2024-02-27 Saudi Arabian Oil Company Lubricating an electric submersible pump
US11920469B2 (en) 2020-09-08 2024-03-05 Saudi Arabian Oil Company Determining fluid parameters
US11994016B2 (en) 2021-12-09 2024-05-28 Saudi Arabian Oil Company Downhole phase separation in deviated wells
US12085687B2 (en) 2022-01-10 2024-09-10 Saudi Arabian Oil Company Model-constrained multi-phase virtual flow metering and forecasting with machine learning

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4730989A (en) * 1984-10-11 1988-03-15 Karsten Laing Rotodynamic pump with spherical bearing
US4728268A (en) * 1984-11-02 1988-03-01 Karsten Laing Rotodynamic pump
DE3538504C2 (de) * 1984-11-02 1995-04-27 Laing Karsten Koaxial durchströmte Kreiselpumpe
US4615662A (en) * 1985-11-21 1986-10-07 Karsten Laing Axial thrust compensation for centrifugal pump
DE3643565A1 (de) * 1985-12-23 1987-07-09 Klifa Gmbh & Co Wasserpumpe fuer ein kraftfahrzeug
CN102425566A (zh) * 2011-12-15 2012-04-25 合肥新沪屏蔽泵股份有限公司 叶轮为背靠背布置的多级屏蔽电泵

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810349A (en) * 1954-07-19 1957-10-22 Tormag Transmissions Ltd Direct coupled magnetic drive centrifugal pumps
US3107310A (en) * 1960-08-03 1963-10-15 Const Mecanique Magnetic coupling having a magnetic bearing
US3354833A (en) * 1964-11-27 1967-11-28 Nikolaus Laing Device for the magnetic transmission of torque
US3447469A (en) * 1967-10-17 1969-06-03 Nikolaus Laing Induction motor having spherical airgap
US3490379A (en) * 1967-06-22 1970-01-20 Vortex Pumpen Ag Circulating pump
US3649137A (en) * 1970-11-30 1972-03-14 Nikolaus Laing Centrifugal pump with magnetic coupling
US3710156A (en) * 1969-12-01 1973-01-09 Laing Nikolaus Rotating electric machine with evaporation cooling

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810349A (en) * 1954-07-19 1957-10-22 Tormag Transmissions Ltd Direct coupled magnetic drive centrifugal pumps
US3107310A (en) * 1960-08-03 1963-10-15 Const Mecanique Magnetic coupling having a magnetic bearing
US3354833A (en) * 1964-11-27 1967-11-28 Nikolaus Laing Device for the magnetic transmission of torque
US3490379A (en) * 1967-06-22 1970-01-20 Vortex Pumpen Ag Circulating pump
US3447469A (en) * 1967-10-17 1969-06-03 Nikolaus Laing Induction motor having spherical airgap
US3710156A (en) * 1969-12-01 1973-01-09 Laing Nikolaus Rotating electric machine with evaporation cooling
US3649137A (en) * 1970-11-30 1972-03-14 Nikolaus Laing Centrifugal pump with magnetic coupling

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043706A (en) * 1973-06-05 1977-08-23 Alan John Walker Bearing support structure for electro-magnet driven pump
US4462752A (en) * 1981-07-17 1984-07-31 Karsten Laing In-line centrifugal pump
US4984972A (en) * 1989-10-24 1991-01-15 Minnesota Mining And Manufacturing Co. Centrifugal blood pump
EP0425257A3 (en) * 1989-10-24 1991-07-24 Minnesota Mining And Manufacturing Company Centrifugal blood pump
US5795127A (en) * 1995-10-20 1998-08-18 Tecumseh Products Company Vertical shaft self-priming centrifugal pump
US6264440B1 (en) * 1998-10-29 2001-07-24 Innovative Mag-Drive, L.L.C. Centrifugal pump having an axial thrust balancing system
FR2788313A1 (fr) * 1999-01-13 2000-07-13 Technicatome Pompe centrifuge a moteur discoidal integre destinee a la circulation d'ammoniac dans un satellite
US6416215B1 (en) 1999-12-14 2002-07-09 University Of Kentucky Research Foundation Pumping or mixing system using a levitating magnetic element
US6758593B1 (en) 2000-10-09 2004-07-06 Levtech, Inc. Pumping or mixing system using a levitating magnetic element, related system components, and related methods
US6899454B2 (en) * 2000-10-09 2005-05-31 Levtech, Inc. Set-up kit for a pumping or mixing system using a levitating magnetic element
WO2005090792A1 (de) * 2004-03-18 2005-09-29 Medos Medizintechnik Ag Pumpe
US20060024182A1 (en) * 2004-03-18 2006-02-02 Mustafa Akdis Pump
US8512012B2 (en) * 2004-03-18 2013-08-20 Circulite, Inc. Pump
US20110002794A1 (en) * 2009-07-06 2011-01-06 Levitronix Gmbh Centrifugal pump and method for compensating the axial thrust in a centrifugal pump
US9115725B2 (en) * 2009-07-06 2015-08-25 Levitronix Gmbh Centrifugal pump and method for compensating the axial thrust in a centrifugal pump
US20130338559A1 (en) * 2010-02-17 2013-12-19 Novita Therapeutics, Llc Blood pump systems and methods
US11724018B2 (en) 2010-02-17 2023-08-15 Artio Medical, Inc. System and method to increase the overall diameter of veins
US10537674B2 (en) 2010-02-17 2020-01-21 Flow Forward Medical, Inc. System and method to increase the overall diameter of veins
US10376629B2 (en) 2010-02-17 2019-08-13 Flow Forward Medical, Inc. Methods to increase the overall diameter of donating veins and arteries
US10293089B2 (en) 2010-02-17 2019-05-21 Flow Forward Medical, Inc. System and method to increase the overall diameter of veins
US9662431B2 (en) 2010-02-17 2017-05-30 Flow Forward Medical, Inc. Blood pump systems and methods
US9555174B2 (en) * 2010-02-17 2017-01-31 Flow Forward Medical, Inc. Blood pump systems and methods
US9539380B2 (en) 2011-08-17 2017-01-10 Flow Forward Medical, Inc. System and method to increase the overall diameter of veins and arteries
US11400275B2 (en) 2011-08-17 2022-08-02 Artio Medical, Inc. Blood pump system for causing persistent increase in the overall diameter of a target vessel
US10426878B2 (en) 2011-08-17 2019-10-01 Flow Forward Medical, Inc. Centrifugal blood pump systems
US11160914B2 (en) 2012-08-17 2021-11-02 Artio Medical, Inc. Blood pump systems and methods
US10258730B2 (en) 2012-08-17 2019-04-16 Flow Forward Medical, Inc. Blood pump systems and methods
CN103821762A (zh) * 2012-11-15 2014-05-28 三星电机株式会社 叶轮及包括该叶轮的电动风机
US20140134012A1 (en) * 2012-11-15 2014-05-15 Samsung Electro-Mechanics Co., Ltd. Impeller and electric blower having the same
CN104179694B (zh) * 2014-08-29 2016-02-17 夏善胜 直流无阻泵
CN104179694A (zh) * 2014-08-29 2014-12-03 夏善胜 新型直流无阻泵
US10260558B2 (en) * 2015-10-08 2019-04-16 Skf Magnetic Mechatronics Rotary machine having magnetic and mechanical bearings
US11534593B2 (en) 2016-04-29 2022-12-27 Artio Medical, Inc. Conduit tips and systems and methods for use
US11371326B2 (en) 2020-06-01 2022-06-28 Saudi Arabian Oil Company Downhole pump with switched reluctance motor
US11499563B2 (en) 2020-08-24 2022-11-15 Saudi Arabian Oil Company Self-balancing thrust disk
US11920469B2 (en) 2020-09-08 2024-03-05 Saudi Arabian Oil Company Determining fluid parameters
US11644351B2 (en) 2021-03-19 2023-05-09 Saudi Arabian Oil Company Multiphase flow and salinity meter with dual opposite handed helical resonators
US11591899B2 (en) 2021-04-05 2023-02-28 Saudi Arabian Oil Company Wellbore density meter using a rotor and diffuser
US11913464B2 (en) 2021-04-15 2024-02-27 Saudi Arabian Oil Company Lubricating an electric submersible pump
US11994016B2 (en) 2021-12-09 2024-05-28 Saudi Arabian Oil Company Downhole phase separation in deviated wells
US12085687B2 (en) 2022-01-10 2024-09-10 Saudi Arabian Oil Company Model-constrained multi-phase virtual flow metering and forecasting with machine learning

Also Published As

Publication number Publication date
JPS55170492U (cg-RX-API-DMAC10.html) 1980-12-06
AT305778B (de) 1973-03-12
DE2135529B2 (de) 1980-01-03
DE2135529A1 (de) 1972-03-16
GB1326305A (en) 1973-08-08
DE2135529C3 (de) 1980-08-28
SE368604B (cg-RX-API-DMAC10.html) 1974-07-08
FR2109770A5 (cg-RX-API-DMAC10.html) 1972-05-26

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