EP0660904B1 - Pompe centrifuge - Google Patents

Pompe centrifuge Download PDF

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Publication number
EP0660904B1
EP0660904B1 EP94918260A EP94918260A EP0660904B1 EP 0660904 B1 EP0660904 B1 EP 0660904B1 EP 94918260 A EP94918260 A EP 94918260A EP 94918260 A EP94918260 A EP 94918260A EP 0660904 B1 EP0660904 B1 EP 0660904B1
Authority
EP
European Patent Office
Prior art keywords
impeller
hub
space
liquid
gap
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
EP94918260A
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German (de)
English (en)
Other versions
EP0660904A1 (fr
Inventor
Martin Stähle
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0660904A1 publication Critical patent/EP0660904A1/fr
Application granted granted Critical
Publication of EP0660904B1 publication Critical patent/EP0660904B1/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
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
    • F04D7/045—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous with means for comminuting, mixing stirring or otherwise treating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/001—Preventing vapour lock
    • F04D9/002—Preventing vapour lock by means in the very pump
    • F04D9/003—Preventing vapour lock by means in the very pump separating and removing the vapour
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
    • F04D9/06—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock of jet type

Definitions

  • the present invention relates to a centrifugal pump according to the preamble of claim 1.
  • a centrifugal pump of this type is described for example in EP-PS 114 932.
  • the object of the present invention is to improve the separation of gas and liquid in a pump of the type mentioned.
  • the overpressures that occur locally in the pump chamber have different heights depending on the impeller configuration and accordingly cause different liquid-gas compositions.
  • the invention aims to improve the separation of liquid and gas compared to the prior art mentioned - regardless of the impeller configuration.
  • the vanes of the coaxial impeller which is non-rotatably connected to the impeller, or the vanes, which are attached to the impeller hub in a radial symmetry, capture the medium entering the hub space and set it in intensive rotation.
  • the separation of gas and liquid becomes clearer because the gas with the smallest diameter (at the shaft gap) can leave the hub space.
  • the gas leaves the hub space before it mixes with the liquid again and can return to the impeller channel due to the uneven pressure conditions in the labyrinth gap.
  • the separated liquid receives a higher pressure and is expelled through the nozzle of a liquid jet pump.
  • the negative pressure generated by the liquid jet is used to remove the separated gases.
  • the end The gas-liquid mixture emerging from the liquid jet pump can be passed into a gas separator of known construction, from where the liquid is returned to the pump suction line.
  • the centrifugal pump according to FIG. 1 has an open, single-bladed centrifugal pump wheel 1 and is rotatably mounted in a pump housing 2.
  • the centrifugal pump wheel 1 sits with its hub 3 on a shaft 4 mounted in a bearing 19 and rotates with little play "a" over the rear wall 5, which forms a labyrinth gap 6 with the hub 3 of the centrifugal pump wheel 1.
  • the labyrinth gap connects the pump chamber 2 'to a hub chamber 7.
  • a connecting line 14 (FIG. 2) connecting to the diffuser tube 13 leads the gas-liquid mixture into a gas separator 15, which connects the liquid to the suction side Returns connection 16 of the centrifugal pump and discharges the gas through a line 17 into a suitable room.
  • a shaft seal 18 protects drive and bearing elements from contact with the material to be conveyed.

Landscapes

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

Abstract

Le rotor (1) est monté, par son moyeu (3), solidaire en rotation sur un arbre (4). La rotation des bords, côté entraînement, du rotor (1) s'effectue avec un faible jeu (a) au-dessus d'une paroi arrière (5) du corps de pompe. Cette paroi forme, avec le rotor (1), une fente en labyrinthe (6). Cette dernière relie l'espace de la pompe (2') à une zone du moyeu (7). Dans cette zone du moyeu (7), une roue à ailettes est reliée coaxialement, solidaire en rotation, avec le rotor (1), dans le but de conférer au liquide dans la zone du moyeu (7), un plus fort mouvement de rotation et de l'accélérer. La zone du moyeu (7) est munie d'une ouverture périphérique (12) pour la sortie du liquide. L'air accumulé dans la zone de l'arbre (4) s'échappe par une fente (10) formée par la paroi (20) de l'enveloppe du moyeu et l'arbre (4). L'ouverture périphérique (12) est ménagée dans la paroi (20) de l'enveloppe du moyeu et est réalisée sous la forme d'une tuyère de propulsion; elle débouche dans un espace (11) limitrophe de la zone du moyeu (7) et relié à ladite zone par la fente (10); elle est orientée à l'encontre d'un tube-diffuseur (11) et forme une pompe à jet de liquide (12, 13) traversée par le liquide provenant de la zone du moyeu (7).

Claims (3)

  1. Pompe centrifuge servant à refouler des matières solides en suspension contenant des gaz, dans laquelle
    - une roue ouverte (1), solidaire par son moyeu (3) d'un arbre tournant (4) a son bord ou celui de ses pales situées du côté de son entraînement, qui tourne avec un faible jeu (a) devant la paroi arrière (5) du corps de pompe délimitant au niveau de son diamètre intérieur, avec la roue (1), une fente à labyrinthe (6) reliant la chambre de pompage (2') à une chambre de moyeu (7) située du côté de l'entraînement et délimitée par une paroi (20) du boîtier de moyeu, cette fente faisant passer le gaz qui se rassemble vers le centre de la roue sous forme d'un mélange liquide-gaz, dans la chambre de moyeu (7) où les grosses particules solides se trouvent retenues,
    - la chambre (7) contient une roue à ailettes solidaire de la roue (1), ou des ailettes (8) fixées avec symétrie radiale sur le moyeu (6), de manière à donner au liquide, à l'intérieur de la chambre (7), un assez fort mouvement de rotation créant un effet de centrifugation,
    - la chambre (7) comporte également une ouverture périphérique (12) de sortie du liquide, tandis que l'air rassemblé au niveau de l'arbre (4) s'échappe à travers une fente (10) délimitée par la paroi du boîtier du moyeu (20) et l'arbre (4),
    caractérisée en ce que
    - l'ouverture périphérique (12) est située dans la paroi (20) du boîtier de moyeu et a la forme d'une tuyère d'entraînement qui débouche dans une chambre (11) située à côté de la chambre (7), du côté entraînement et reliée à celle-ci par la fente (10),
    - l'ouverture (12) est dirigée vers un tube diffuseur de manière à former avec celui-ci une pompe à éjection de liquide (12, 13) à travers laquelle le liquide provenant de la chambre de moyeu (7) s'écoule en entraînant et en évacuant le gaz sortant de la fente (10).
  2. Pompe centrifuge selon la revendication 1,
    caractérisée en ce que
    le mélange liquide-gaz sortant de la pompe à éjection (12, 13) est conduit à un séparateur de gaz (15) à partir duquel le liquide séparé est ramené par une conduite (16) à l'entrée de la pompe centrifuge, tandis que le gaz est conduit à une chambre prévue pour le recevoir.
  3. pompe centrifuge selon la revendication 1 ou 2,
    caractérisée en ce que
    les ailettes de la roue ou les ailettes fixées au moyeu (6) de la roue de la pompe, se trouvent en face et à une certaine distance d'une spirale conductrice (9), de préférence une rainure en spirale (2) ou une nervure en spirale, conduisant vers l'extérieur dans le sens de rotation de l'arbre (4) et tenant ainsi les particules solides éloignées de la fente (10).
EP94918260A 1993-07-16 1994-06-24 Pompe centrifuge Expired - Lifetime EP0660904B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH2160/93 1993-07-16
CH02160/93A CH689004A5 (de) 1993-07-16 1993-07-16 Kreiselpumpe.
PCT/CH1994/000129 WO1995002768A1 (fr) 1993-07-16 1994-06-24 Pompe centrifuge

Publications (2)

Publication Number Publication Date
EP0660904A1 EP0660904A1 (fr) 1995-07-05
EP0660904B1 true EP0660904B1 (fr) 1997-03-05

Family

ID=4227284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94918260A Expired - Lifetime EP0660904B1 (fr) 1993-07-16 1994-06-24 Pompe centrifuge

Country Status (8)

Country Link
US (1) US5545005A (fr)
EP (1) EP0660904B1 (fr)
JP (1) JPH08501615A (fr)
CN (1) CN1063529C (fr)
CH (1) CH689004A5 (fr)
DE (1) DE59401938D1 (fr)
RU (1) RU2118712C1 (fr)
WO (1) WO1995002768A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE508348C2 (sv) * 1996-03-27 1998-09-28 Sunds Defibrator Ind Ab Sätt och anordning vid pumpning av ett gasinnehållande medium där gasen evakueras med hjälp av sugverkan från en ejektor
US5997242A (en) * 1996-12-02 1999-12-07 Alden Research Laboratory, Inc. Hydraulic turbine
DE102009030161A1 (de) * 2009-06-24 2011-02-10 Schröder Maschinenbau KG Umwälzsystem für lebensmittelverträgliche Flüssigkeiten
DE102015002397A1 (de) * 2015-02-24 2016-08-25 Dickow-Pumpen Kg Kühl- und Entgasungssystem
WO2016165090A1 (fr) * 2015-04-16 2016-10-20 威海凌云流体传动科技有限公司 Pompe à deux phases gaz-liquide
US20190023411A1 (en) * 2017-07-24 2019-01-24 Hamilton Sundstrand Corporation Hydrocarbon fuel system
WO2020046799A1 (fr) * 2018-08-27 2020-03-05 The Texas A&M University System Turbomachines a haute densité energetique

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB775161A (en) * 1954-05-17 1957-05-22 Rene Leduc Improvements in centrifugal pump installations
DE1098364B (de) * 1957-06-27 1961-01-26 Paul Bungartz Wellenspaltabdichtung fuer Kreiselpumpen, Kreiselkompressoren, Ruehrer u. dgl. mit einem Hilfsfoerderrad
GB1027790A (en) * 1964-03-10 1966-04-27 Frank Mohn Improvements in self-priming centrifugal pumps
DE2220875A1 (de) * 1972-04-28 1974-02-14 Rheinstahl Ag Selbstansaugende kreiselpumpe
CH557472A (de) * 1972-09-13 1974-12-31 Sulzer Ag Turbopumpe.
DE2757952C2 (de) * 1977-12-24 1983-02-24 Sihi Gmbh & Co Kg, 2210 Itzehoe Selbstansaugende Kreiselpumpe
DE3365881D1 (en) * 1982-12-22 1986-10-09 Staehle Martin Centrifugal pump of the open channel rotor type
FI73023C (fi) * 1984-07-17 1987-08-10 Ahlstroem Oy Anordning foer avskiljande av gas ur en fibersuspension.
US5114310A (en) * 1990-09-07 1992-05-19 A. Ahlstrom Corporation Centrifugal pump with sealing means
US5152663A (en) * 1990-09-07 1992-10-06 A. Ahlstrom Corporation Centrifugal pump
US5215430A (en) * 1992-02-26 1993-06-01 J. C. Carter Company, Inc. Ignition-source free fuel pump
US5413462A (en) * 1994-03-08 1995-05-09 Reliance Electric Industrial Co. Mechanical power transmission system having improved lubricant circulation apparatus

Also Published As

Publication number Publication date
DE59401938D1 (de) 1997-04-10
RU2118712C1 (ru) 1998-09-10
CN1112371A (zh) 1995-11-22
EP0660904A1 (fr) 1995-07-05
RU95108259A (ru) 1997-03-10
CN1063529C (zh) 2001-03-21
US5545005A (en) 1996-08-13
WO1995002768A1 (fr) 1995-01-26
CH689004A5 (de) 1998-07-15
JPH08501615A (ja) 1996-02-20

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