DE2424552C2 - Centrifugal pump - Google Patents

Centrifugal pump

Info

Publication number
DE2424552C2
DE2424552C2 DE2424552A DE2424552A DE2424552C2 DE 2424552 C2 DE2424552 C2 DE 2424552C2 DE 2424552 A DE2424552 A DE 2424552A DE 2424552 A DE2424552 A DE 2424552A DE 2424552 C2 DE2424552 C2 DE 2424552C2
Authority
DE
Germany
Prior art keywords
centrifugal pump
impeller
pole ring
concave bearing
housing
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
Application number
DE2424552A
Other languages
German (de)
Other versions
DE2424552A1 (en
Inventor
Alan J. Dornoch Sutherland Walker
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.)
RE Dupont Research and Investment Services Ltd
Original Assignee
RE Dupont Research and Investment Services Ltd
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 RE Dupont Research and Investment Services Ltd filed Critical RE Dupont Research and Investment Services Ltd
Publication of DE2424552A1 publication Critical patent/DE2424552A1/en
Application granted granted Critical
Publication of DE2424552C2 publication Critical patent/DE2424552C2/en
Expired 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
    • F04D29/046—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
    • 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
    • F04D13/0606—Canned motor pumps
    • F04D13/0633—Details of the 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
    • F16C17/04—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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
    • H02K5/1282—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs the partition wall in the air-gap being non cylindrical
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/086—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
    • H02K7/088—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly radially supporting the rotor directly
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/11—Structural association with clutches, brakes, gears, pulleys or mechanical starters with dynamo-electric clutches
    • 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
    • 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
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

Landscapes

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

Description

2525th

Die Erfindung betrifft eine Kreiselpumpe nach dem Oberbegriff des Hauptanspruches.The invention relates to a centrifugal pump according to the preamble of the main claim.

Aus der DE-OS 22 46 418 ist eine Kreiselpumpe der vorstehend beschriebenen Art bekannt, bei welcher durch das Magnetfeld in Richtung der Trennwand eine Kraft erzeugt wird, wobei eine Hilfseinrichtung in Form eines elastischen Ringes ein Abfallen des Rotors nach Abschalten des Magnetfeldes verhindert. Bei Kreiselpumpen der gattungsgemäßen Art treten im wesentlichen zwei entgegengesetzt gerichtete Kräfte auf: Zum einen die Magnetkraft, zum anderen die hydraulische Schubkraft. Gegen beide Kräfte muß der Polring drehbar gelagert sein, wobei zu berücksichtigen ist, daß die magnetischen Kräfte beim Einschalten des Motors sofort wirksam werden, während die entgegengesetzt gerichteten hydraulischen Kräfte als Funktion der Drehzahl erst mit dem Hochlaufen der Pumpe ihre höchsten Werte erreichen. Letztgenanntem Umstand ist bei der gattungsgemäßen Kreiselpumpe nicht ausreichend Rechnung getragen.From DE-OS 22 46 418 a centrifugal pump of the type described above is known in which a force is generated by the magnetic field in the direction of the partition wall, with an auxiliary device in the form an elastic ring prevents the rotor from falling off after the magnetic field has been switched off. With centrifugal pumps of the generic type essentially occur two oppositely directed forces: For on the one hand the magnetic force, on the other hand the hydraulic thrust. The pole ring must be rotatable against both forces be stored, taking into account that the magnetic forces when the motor is switched on immediately take effect while the oppositely directed hydraulic forces as a function of the speed only reach their highest values when the pump starts up. The latter circumstance is with the generic centrifugal pump not sufficiently taken into account.

Der Erfindung liegt die Aufgabe zugrunde, eine Kreiselpumpe der eingangs genannten Art zu schaffen, bei der in allen Betriebszuständen der Pumpe, also insbesondere in der Anlauf- und in der Hochlaufphase, eine sichere Lagerung der Polring-Laurad-Einheit gewährleistet ist.The invention is based on the object of creating a centrifugal pump of the type mentioned at the beginning which is one in all operating states of the pump, especially in the start-up and run-up phase safe storage of the Polring-Laurad unit is guaranteed.

Erfindungsgemäß wird diese Aufgabe durch die im Kennzeichen des Hauptanspruches aufgeführten Merkmale gelöst. Eine besonders bevorzugte Ausführungsform der Erfindung ist Gegenstand des Unteranspruches. According to the invention, this object is achieved by the features listed in the characterizing part of the main claim solved. A particularly preferred embodiment of the invention is the subject of the dependent claim.

Im Gegensatz zu der gattungsgemäßen Kreiselpumpe ist bei der Erfindung nicht der konvexe, sondern der konkave Lagerpartner fest mit dem Gehäuse verbunden, also stationär angeordnet. Hierdurch läßt sich der konkave Lagerpartner entsprechend den hohen Anforderungen an die Lagerung in der Hochlaufphase, in der große Schubkräfte auftreten, anpassen, während die gegenüberliegende Stützsäule im wesentlichen die kon- ,65 stanten magnetischen Kräfte aufnimmt und entsprechend klein ausgestaltet werden kann.In contrast to the generic centrifugal pump, the invention is not the convex, but the concave bearing partners firmly connected to the housing, that is, arranged in a stationary manner. This allows the concave bearing partners in accordance with the high requirements for storage in the run-up phase in the large shear forces occur, adjust while the opposite support column is essentially the con, 65 absorbs constant magnetic forces and can be made correspondingly small.

Zwar ist aus der DE-OS 21 09 341 eine Lagerung beschrieben, bei der eine Kugel mit einer Radscheibe eine umlaufende Einheit bildet, die einen durch einen Permanentmagneten angezogenen Rotor lagert, jedoch ist dort das Magnetfeld nicht abschaltbar, so daß die der Erfindung zugrundeliegenden Lagerungsprobleme, nämlich das Auftreten eines Magnetfeldes beim Einschalten sowie das Auftreten von hydraulischen Kräften in der Hochlaufphase, nicht auftreten können.Although DE-OS 21 09 341 describes a storage, in which a ball with a wheel disc forms a revolving unit, one by a permanent magnet The rotor is attracted, but the magnetic field cannot be switched off there, so that the Invention underlying storage problems, namely the occurrence of a magnetic field when switching on as well as the occurrence of hydraulic forces in the run-up phase, cannot occur.

Ein Ausführungsbeispiel der erfindungsgemäßen Kreiselpumpe, welche auch bei hohen Leistungen bzw. bei Pumpen, deren Laufrad einen hohen Druck erzeugt, verwendet werden kann, ist nachstehend anhand der Zeichnung im einzelnen erläutert Dabei zeigt die aus einer einzigen Figur bestehende Zeichnung ein Ausführungsbeispiel der Kreiselpumpe nach der Erfindung im axialen SchnittAn embodiment of the centrifugal pump according to the invention, which can also be used for high performance or can be used with pumps whose impeller generates high pressure, is shown below with reference to the Drawing explained in detail The drawing, which consists of a single figure, shows an exemplary embodiment the centrifugal pump according to the invention in axial section

Wie die Zeichnung erkennen läßt, weist die Kreiselpumpe nach der Erfindung bei dem gezeigten Ausführungsbeispie) ein Laufrad 1 auf, welches mit einem Polring 2 eine Einheit bildet Die Oberfläche des Polringes 2 verläuft zu einer magnetisch durchlässigen Trennwand 3 hin sphärisch. Hinter der Trennwand 3 ist ein Elektromotorenstator angeordnet, der aus magnetisch leitenden Zähnen 4, Spulen 5 und einem magnetischen Rückschluß 6 besteht. Mit der Polring-Laufradeinheit ist eine Kugel 7, einen konvexen Lagerpartner bildend, fest verbunden, die in einer konkaven Lagerschale 8, also einem konkaven Lagerpartner, gelagert ist Letztere ist durch ein Rohr 9 mit einem Pumpengehäuse 10 fest verbunden. Das Laufrad 1 erzeugt im Betrieb eine Kraft entsprechend dem Pfeil 11, während der Polring 2 eine Kraft erzeugt, die in Richtung eines Pfeiles 12 weist.As the drawing shows, the centrifugal pump according to the invention in the illustrated Ausführungsbeispie) an impeller 1, which with a pole ring 2 forms a unit The surface of the pole ring 2 runs to a magnetically permeable partition 3 spherical. Behind the partition 3, an electric motor stator is arranged, which is made of magnetically conductive Teeth 4, coils 5 and a magnetic yoke 6 consists. With the Polring impeller unit is a Ball 7, forming a convex bearing partner, firmly connected, in a concave bearing shell 8, so one concave bearing partner, is mounted. The latter is firmly connected to a pump housing 10 by a pipe 9. The impeller 1 generates a force according to the arrow 11 during operation, while the pole ring 2 generates a Force generated, which points in the direction of an arrow 12.

Diese letztgenannte Kraft wird durch eine Stützsäule 13 abgefangen. Sobald die Kraft gemäß dem Pfeil 11 größer wird als die Kraft gemäß dem Pfeil 12, wandert die Kugel 7 von der Stützsäule 13 weg in die konkave Lagerschale 8.This last-mentioned force is absorbed by a support column 13. As soon as the force according to arrow 11 becomes greater than the force according to the arrow 12, the ball 7 migrates away from the support column 13 into the concave Bearing shell 8.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (2)

Patentansprüche:Patent claims: 1. Kreiselpumpe mit einem Polring, der mit einem Laufrad eine Einheit bildet, mit einem im Pumpengehäuse angeordneten Elektromotorenstator, welcher sowohl in axialer als auch in radialer Richtung durch eine sphärische Trennwand hindurch Magnetkräfte auf den Polring überträgt, die dem auf das Laufrad wirkenden hydraulischen Schub entgegengesetzt gerichtet sind, und mit einem sphärischen Lager für die Polring-Laufradeinheit, welches einen konvexen und eben konkaven Lagerpartner aufweist, wovon einer fest mit dem Gehäuse verbunden ist, und wobei dem konkaven Lagerpartner gegenüber eine Stützsäule vorgesehen ist, welche den konvexen Lagerpattner abstützt, dadurch gekennzeichnet, daß der konkave Lagerpartner (8) fest mit dem Gehäuse in dessen Ansaugbereich verbunden ist1. Centrifugal pump with a pole ring that forms a unit with an impeller, with one in the pump housing arranged electric motor stator, which both in the axial and in the radial direction by a spherical partition wall transmits magnetic forces to the pole ring, which then to the impeller acting hydraulic thrust are oppositely directed, and with a spherical bearing for the pole ring impeller unit, which has a convex and concave bearing partner, of which one is fixedly connected to the housing, and the concave bearing partner opposite one Support column is provided, which supports the convex Lagerpattner, characterized in that that the concave bearing partner (8) is firmly connected to the housing in its suction area 2. Kreiselpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Stützsäule (13) mit der Trennwand (3) fest verbunden ist.2. Centrifugal pump according to claim 1, characterized in that that the support column (13) is firmly connected to the partition (3).
DE2424552A 1973-06-05 1974-05-21 Centrifugal pump Expired DE2424552C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2663073A GB1420840A (en) 1973-06-05 1973-06-05 Electromagentically driven pumps

Publications (2)

Publication Number Publication Date
DE2424552A1 DE2424552A1 (en) 1975-01-16
DE2424552C2 true DE2424552C2 (en) 1986-05-28

Family

ID=10246665

Family Applications (2)

Application Number Title Priority Date Filing Date
DE2424552A Expired DE2424552C2 (en) 1973-06-05 1974-05-21 Centrifugal pump
DE2463394A Expired DE2463394C2 (en) 1973-06-05 1974-05-21 Centrifugal pump

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE2463394A Expired DE2463394C2 (en) 1973-06-05 1974-05-21 Centrifugal pump

Country Status (6)

Country Link
JP (1) JPS5048504A (en)
AT (1) AT330888B (en)
CA (1) CA998293A (en)
DE (2) DE2424552C2 (en)
FR (1) FR2240369B1 (en)
GB (1) GB1420840A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3631710A1 (en) * 1986-09-18 1988-03-24 Birger Laing HANDLABLE MOTOR-PUMP UNIT
CN102084135B (en) * 2008-05-05 2013-07-31 Itt制造企业公司 Circulating pump

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2541500A1 (en) * 1975-09-17 1977-03-31 Vortex Pumpen Ag HOUSING FOR MOTORS WITH SPHERICAL AIR GAP
DE2951563A1 (en) * 1979-12-21 1981-07-02 Vorwerk & Co Interholding Gmbh, 5600 Wuppertal BEARING FOR THE ROTOR SHAFT OF ELECTRIC MOTORS WITH BLOWING WHEEL
DE3538504C2 (en) * 1984-11-02 1995-04-27 Laing Karsten Centrifugal pump with coaxial flow
US4615662A (en) * 1985-11-21 1986-10-07 Karsten Laing Axial thrust compensation for centrifugal pump
DE3635202A1 (en) * 1986-10-16 1988-04-21 Laing Karsten Service-water circulating pump not sensitive to backflow
GB8625509D0 (en) * 1986-10-24 1986-11-26 Horseman C J Driving mixers & pumps
DE3744101C2 (en) * 1987-12-24 1998-07-30 Ludin Ludwig Bearing system with ceramic bearing ball for small pumps with spherical drive
DE102004003931B4 (en) * 2004-01-26 2015-06-18 Volkswagen Ag Hydraulic circuit or method for controlling a pressure and / or a volume flow of a hydraulic medium in a hydraulic circuit, in particular for a dual-clutch transmission of a motor vehicle
DE102004008158A1 (en) * 2004-02-12 2005-09-22 Laing, Oliver Spherical bearing, electric motor and circulation pump
DE102004058591A1 (en) * 2004-11-26 2006-06-01 Laing, Oliver Circulation pump and method for producing a circulation pump
CN110552894B (en) * 2019-09-23 2024-04-19 扬州大学 Shaftless pump and application method thereof
CN114645854B (en) * 2020-12-17 2024-10-22 日益电机股份有限公司 Permanent magnet pump with leakage detection function

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2109341A1 (en) * 1970-03-17 1971-11-04 Standard Magnet Ag Cooling water pump for automobiles
AT309230B (en) * 1970-10-13 1973-08-10 Standard Magnet Ag Magnetic coupling, especially for coupling a pump impeller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3631710A1 (en) * 1986-09-18 1988-03-24 Birger Laing HANDLABLE MOTOR-PUMP UNIT
CN102084135B (en) * 2008-05-05 2013-07-31 Itt制造企业公司 Circulating pump

Also Published As

Publication number Publication date
JPS5048504A (en) 1975-04-30
ATA460174A (en) 1975-10-15
DE2424552A1 (en) 1975-01-16
FR2240369B1 (en) 1979-10-19
DE2463394C2 (en) 1986-07-24
CA998293A (en) 1976-10-12
FR2240369A1 (en) 1975-03-07
GB1420840A (en) 1976-01-14
AT330888B (en) 1976-07-26

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