EP1918591A3 - Kreiselpumpe - Google Patents

Kreiselpumpe Download PDF

Info

Publication number
EP1918591A3
EP1918591A3 EP07018893A EP07018893A EP1918591A3 EP 1918591 A3 EP1918591 A3 EP 1918591A3 EP 07018893 A EP07018893 A EP 07018893A EP 07018893 A EP07018893 A EP 07018893A EP 1918591 A3 EP1918591 A3 EP 1918591A3
Authority
EP
European Patent Office
Prior art keywords
centrifugal pump
impeller
flow direction
inlet
inlet nozzle
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.)
Withdrawn
Application number
EP07018893A
Other languages
English (en)
French (fr)
Other versions
EP1918591A2 (de
Inventor
Günter Prof. Dr.-Ing. Kosyna
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.)
Technische Universitaet Braunschweig
Original Assignee
Technische Universitaet Braunschweig
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 Technische Universitaet Braunschweig filed Critical Technische Universitaet Braunschweig
Publication of EP1918591A2 publication Critical patent/EP1918591A2/de
Publication of EP1918591A3 publication Critical patent/EP1918591A3/de
Withdrawn legal-status Critical Current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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/548—Specially 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/688—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers 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
    • F04D3/00—Axial-flow pumps

Landscapes

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

Abstract

Die Erfindung betrifft eine Kreiselpumpe (1) mit einem Laufrad (4) axialer oder halbaxialer Bauart und einer Einlaufdüse (5) welche in einer Strömungsrichtung (SR) der Kreiselpumpe vor dem Laufrad angeordnet ist. Erfindungsgemäß ist eine zweite Einlaufdüse (6) vorgesehen, welche konzentrisch zu der ersten Einlaufdüse (5) angeordnet ist, wobei die beiden Einlaufdüsen (5, 6) in Strömungsrichtung (SR) derart hintereinander angeordnet sind, dass sich zwischen den beiden Einlaufdüsen (5, 6) ein Ringspalt (11) ausbildet. Bei einem Teillastbetrieb der Kreiselpumpe (1) kann eine Umfangskomponente der aus dem Laufrad (4) austretenden und der Strömungsrichtung (SR) der Kreiselpumpe (1) entgegen gerichteten Rückströmung (24) fast vollständig durch den Ringspalt (11) hindurch aus dem Saugkanal (13) abgeführt werden, wobei die kinetische Energie der Rückströmung (24) in dem die Einlaufdüsen (5, 6) umgebenen Flüssigkeitsvolumen (14) umgewandelt wird. Hierdurch wird die Entstehung eines Teillasiwirbels wirksam verhindert, das Auftreten von Kavitation und Kavitationsschäden vermieden und eine nahezu vollständige Stabilisierung der Kennlinie erreicht.
EP07018893A 2006-10-26 2007-09-26 Kreiselpumpe Withdrawn EP1918591A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610051012 DE102006051012A1 (de) 2006-10-26 2006-10-26 Kreiselpumpe

Publications (2)

Publication Number Publication Date
EP1918591A2 EP1918591A2 (de) 2008-05-07
EP1918591A3 true EP1918591A3 (de) 2010-01-20

Family

ID=39102065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07018893A Withdrawn EP1918591A3 (de) 2006-10-26 2007-09-26 Kreiselpumpe

Country Status (2)

Country Link
EP (1) EP1918591A3 (de)
DE (1) DE102006051012A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018128811A1 (de) * 2018-11-16 2020-05-20 Ebm-Papst Mulfingen Gmbh & Co. Kg Variabel mit unterschiedlichen Düsen kombinierbarer Diagonalventilator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57124099A (en) * 1981-01-26 1982-08-02 Ebara Corp Pump
DE3524297A1 (de) * 1985-07-02 1987-01-15 Sulzer Ag Kreiselpumpe
DE3724299A1 (de) * 1986-10-09 1988-04-21 Rockwell International Corp Pumpe mit ummanteltem vorlaufrad
WO2005059368A1 (en) * 2003-12-16 2005-06-30 The Boeing Company Inducer tip vortex suppressor
WO2005070147A2 (en) * 2004-01-14 2005-08-04 Concepts Eti, Inc. Secondary flow control system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57124099A (en) * 1981-01-26 1982-08-02 Ebara Corp Pump
DE3524297A1 (de) * 1985-07-02 1987-01-15 Sulzer Ag Kreiselpumpe
DE3724299A1 (de) * 1986-10-09 1988-04-21 Rockwell International Corp Pumpe mit ummanteltem vorlaufrad
WO2005059368A1 (en) * 2003-12-16 2005-06-30 The Boeing Company Inducer tip vortex suppressor
WO2005070147A2 (en) * 2004-01-14 2005-08-04 Concepts Eti, Inc. Secondary flow control system

Also Published As

Publication number Publication date
EP1918591A2 (de) 2008-05-07
DE102006051012A1 (de) 2008-04-30

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