EP0009449A1 - Lager für ambivalente Zentrifugalpumpe - Google Patents

Lager für ambivalente Zentrifugalpumpe Download PDF

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Publication number
EP0009449A1
EP0009449A1 EP79400651A EP79400651A EP0009449A1 EP 0009449 A1 EP0009449 A1 EP 0009449A1 EP 79400651 A EP79400651 A EP 79400651A EP 79400651 A EP79400651 A EP 79400651A EP 0009449 A1 EP0009449 A1 EP 0009449A1
Authority
EP
European Patent Office
Prior art keywords
centrifugal pump
stop
pump
motor
ring
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.)
Granted
Application number
EP79400651A
Other languages
English (en)
French (fr)
Other versions
EP0009449B1 (de
Inventor
Claude Van Rossem
Jean-Claude Le Dall
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.)
ELECTRO-HYDRAULIQUE SEH Ste
Thales SA
Original Assignee
ELECTRO-HYDRAULIQUE SEH Ste
Le Materiel Telephonique Thomson CSF
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 ELECTRO-HYDRAULIQUE SEH Ste, Le Materiel Telephonique Thomson CSF filed Critical ELECTRO-HYDRAULIQUE SEH Ste
Publication of EP0009449A1 publication Critical patent/EP0009449A1/de
Application granted granted Critical
Publication of EP0009449B1 publication Critical patent/EP0009449B1/de
Expired 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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage 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
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system

Definitions

  • the present invention relates to centrifugal pumps, in particular those of them which, constituted by a plurality of stackable pump elements driven by an incorporated electric motor, belong to the so-called multicellular type.
  • the invention relates more particularly to an improvement of the multicellular centrifugal pump intended to give it a double possibility of operation in the air and in the liquid to be pumped.
  • centrifugal pumps In the construction technique of centrifugal pumps, a distinction is made between pumps intended to operate in air and others capable of pumping a liquid in which they are immersed.
  • the electric motor driving the pump is cooled by the effect of a circulation - usually forced - of the fluid borrowed from the ambient environment: air for the former, the liquid to be pumped for seconds.
  • the invention provides, according to its main characteristic, a centrifugal pump in which the cooling of the electric drive motor is linked to the fluid to be pumped and not borrowed from the ambient medium.
  • centrifugal pump according to the invention gives the centrifugal pump according to the invention a new character, that of being an ambivalent centrifugal pump whose use accommodates two ambient media.
  • the invention relates to an ambivalent centrifugal pump of the "amphibious" type, that is to say operating indifferently in air or in water.
  • the central drive part M comprises an electric motor with a flooded rotor. This rotor is visible in 3, the motor stator is illustrated in 4, the motor windings in 5. In order to avoid a possible short circuit between metallic masses of the rotor and the stator by a pumped liquid which would be conductive it is planned to isolate them according to the rules of art.
  • the motor shaft 6 drives the pump elements, by means of the extensions 7, 7 'along the common axis of rotation R'R and on either side of the central drive part.
  • each of the pump ends is formed by stacking two pump elements, such as the stacks EP1 and EP2 at the right end of FIG. 1.
  • any pump element such as the PPE stack
  • a wheel capable of turning in a chamber such as the wheel 11 in the chamber 12 of the PPE stack, under the action of a driving driving force. from the single engine.
  • the wheels such as the wheel 11, are included coaxially with the pump shaft.
  • the wheels of the various superimposed elements are rigidly assembled together by a dog clutch as has been described in French patent application No. 76 05 510 filed on February 27, 1976 by the applicant and published under No. 2,342,416.
  • clutches of the superimposed wheels is provided by means of a clutch of claw teeth with a trapezoidal profile eliminating any axial play, as described in the aforementioned patent.
  • circulation conduits are provided for the engine coolant.
  • a longitudinal circulation duct which puts the front cavities 13 'and rear 13 of the pumps in communication with each other.
  • the cavities 13 'and 13 are individually in communication with the chambers 12' and 12 by means of the elements 15 'and 15 usually designated each by the term "return channel", the pumped liquid existing in the cavity 13' is routed along the arrow by the conduit 14 in the cavity 13.
  • the circulation of liquids established by the conduit 14 continuously and constitutes a true engine coolant jacket.
  • FIG. 2 shows the detail arrangement of a bearing in the embodiment of the invention illustrated by Figure 1.
  • the shaft sleeve is designated by 8, the stop support by 9, the bearing by 10, the stop ring by 29, the O-ring by 19.
  • the stop is constituted by a part in the form of a ring 29.
  • On the periphery of large diameter of this ring are hollowed out several notches in the example described there are three notches at 120 ° relating to the thickness of the ring.
  • the circumferential edge of small diameter of the stop ring 29 is chamfered on one of its planar faces, as is particularly visible in the sectional view of Figure 1.
  • the assembly between the support stop 9 and the shaft sleeve 8 is made by dog clutch.
  • the stop support 9 is made integral with the motor shaft by means of a pin fixing 90 visible in FIG. 1.
  • the O-ring 19 is introduced at the bottom of the low-cut part of the stop support 9.
  • the stop support 9 has on its large diameter periphery three flexible extensions, such as the extension 39 in the shape of a claw or tongue.
  • the stopper ring 29 is threaded by anchoring the flexible tabs in the notches provided, so that the chamfered edge comes to bear on the joint 19.
  • the dog clutch 8-9 is assembled.
  • the stop support 9 rotates the sleeve by dog clutch and by means of the three claws, in retaining tabs, the stop ring.
  • any alignment imperfection is erased by the recommended arrangement.
  • the parts: shirt, pad and stopper are made of a material of the ceramic type.
  • the stop support is made of a thermoplastic material of the noryl type, flexible and robust.
  • the recommended solution is economical since the arrangement is self-aligning without requiring machined surfaces with too narrow tolerances. It has the very great advantage of erasing the alignment imperfections or those of surfacing of the parts.
  • the two bearings, front and rear, are both lubricated by the pumped liquid.
  • the abutment face of the bearings has three grooves at 120 °, so as to maintain a constant liquid film, between the friction faces. These grooves are not shown in the figure.
  • Such a pump is designed to be used interchangeably in air: for example, in line, on a pipe, or in the liquid to be pumped in which it is immersed without damage.
  • the liquid to be pumped can for example be pure water or water containing salts or impurities such as to make it electrically conductive.
  • the liquid can be different from water, the adaptation to the liquid to be pumped being within the skill of the art.
  • the example described constitutes an ambivalent pump model of the "amphibious" type operating both in air and in water.
  • It can be used to drain water by submerging it at the bottom of a pond, a river, a well, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP79400651A 1978-09-22 1979-09-18 Lager für ambivalente Zentrifugalpumpe Expired EP0009449B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7827164A FR2436898A1 (fr) 1978-09-22 1978-09-22 Pompe centrifuge ambivalente
FR7827164 1978-09-22

Publications (2)

Publication Number Publication Date
EP0009449A1 true EP0009449A1 (de) 1980-04-02
EP0009449B1 EP0009449B1 (de) 1982-05-05

Family

ID=9212906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400651A Expired EP0009449B1 (de) 1978-09-22 1979-09-18 Lager für ambivalente Zentrifugalpumpe

Country Status (4)

Country Link
EP (1) EP0009449B1 (de)
DK (1) DK394179A (de)
ES (1) ES484345A1 (de)
FR (1) FR2436898A1 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3014103A1 (de) * 1980-04-12 1981-10-15 Hermetic-Pumpen Gmbh, 7803 Gundelfingen Pumpenaggregat mit einem mehrstufigen pumpenteil
DE3239601A1 (de) * 1981-11-03 1983-05-11 K. Rütschi AG Pumpenbau, 5200 Brugg Spaltrohrmotortauchpumpe
DE3539883A1 (de) * 1985-09-18 1987-03-26 Hermetic Pumpen Gmbh Selbstansaugende kreiselpumpe
GB2244095A (en) * 1990-05-17 1991-11-20 Hwang Cheng Luen Aquarium pump arrangement
US5494418A (en) * 1992-04-14 1996-02-27 Ebara Corporation Pump casing made of sheet metal
EP0719941A1 (de) * 1994-12-27 1996-07-03 Ebara Corporation Doppelseitig saugende Pumpe
WO2001020168A1 (de) * 1999-09-16 2001-03-22 Gwj Engineering Gbr Turbogebläse
GB2414278A (en) * 2004-05-18 2005-11-23 Weir Pumps Ltd Pump assembly with driving means located in a pump casing
WO2006021560A1 (en) * 2004-08-23 2006-03-02 Frank Mohn Flatøy As Rotodynamic fluid machine
JP2015089697A (ja) * 2013-11-05 2015-05-11 トヨタ自動車株式会社 車両用音声認識装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB410322A (en) * 1933-05-31 1934-05-17 Daniel James Moran Pump assemblies
FR2175388A5 (de) * 1972-03-10 1973-10-19 Pierburg Autogeraetebau Kg
FR2342416A1 (fr) * 1976-02-27 1977-09-23 Materiel Telephonique Pompe centrifuge multicellulaire auto-amorcante
DE2709673A1 (de) * 1977-03-05 1978-09-07 Licentia Gmbh Mit einer axialen lagerflaeche versehene lagerkalotte

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB410322A (en) * 1933-05-31 1934-05-17 Daniel James Moran Pump assemblies
FR2175388A5 (de) * 1972-03-10 1973-10-19 Pierburg Autogeraetebau Kg
FR2342416A1 (fr) * 1976-02-27 1977-09-23 Materiel Telephonique Pompe centrifuge multicellulaire auto-amorcante
DE2709673A1 (de) * 1977-03-05 1978-09-07 Licentia Gmbh Mit einer axialen lagerflaeche versehene lagerkalotte

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3014103A1 (de) * 1980-04-12 1981-10-15 Hermetic-Pumpen Gmbh, 7803 Gundelfingen Pumpenaggregat mit einem mehrstufigen pumpenteil
DE3239601A1 (de) * 1981-11-03 1983-05-11 K. Rütschi AG Pumpenbau, 5200 Brugg Spaltrohrmotortauchpumpe
DE3539883A1 (de) * 1985-09-18 1987-03-26 Hermetic Pumpen Gmbh Selbstansaugende kreiselpumpe
GB2244095A (en) * 1990-05-17 1991-11-20 Hwang Cheng Luen Aquarium pump arrangement
US5494418A (en) * 1992-04-14 1996-02-27 Ebara Corporation Pump casing made of sheet metal
EP0747599A1 (de) * 1992-04-14 1996-12-11 Ebara Corporation Pumpengehäuse in Blechbauweise
EP0719941A1 (de) * 1994-12-27 1996-07-03 Ebara Corporation Doppelseitig saugende Pumpe
WO2001020168A1 (de) * 1999-09-16 2001-03-22 Gwj Engineering Gbr Turbogebläse
GB2414278A (en) * 2004-05-18 2005-11-23 Weir Pumps Ltd Pump assembly with driving means located in a pump casing
WO2006021560A1 (en) * 2004-08-23 2006-03-02 Frank Mohn Flatøy As Rotodynamic fluid machine
JP2015089697A (ja) * 2013-11-05 2015-05-11 トヨタ自動車株式会社 車両用音声認識装置

Also Published As

Publication number Publication date
EP0009449B1 (de) 1982-05-05
DK394179A (da) 1980-03-23
ES484345A1 (es) 1980-05-16
FR2436898A1 (fr) 1980-04-18
FR2436898B1 (de) 1982-05-14

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