EP2199616A2 - Pompe centrifuge avec arbre fixe - Google Patents

Pompe centrifuge avec arbre fixe Download PDF

Info

Publication number
EP2199616A2
EP2199616A2 EP09012896A EP09012896A EP2199616A2 EP 2199616 A2 EP2199616 A2 EP 2199616A2 EP 09012896 A EP09012896 A EP 09012896A EP 09012896 A EP09012896 A EP 09012896A EP 2199616 A2 EP2199616 A2 EP 2199616A2
Authority
EP
European Patent Office
Prior art keywords
pump
axis
centrifugal pump
pump according
head
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
EP09012896A
Other languages
German (de)
English (en)
Other versions
EP2199616A3 (fr
EP2199616B1 (fr
Inventor
Michael John Werson
Colin Richard French
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.)
Buehler Motor GmbH
Original Assignee
Buehler Motor GmbH
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 Buehler Motor GmbH filed Critical Buehler Motor GmbH
Publication of EP2199616A2 publication Critical patent/EP2199616A2/fr
Publication of EP2199616A3 publication Critical patent/EP2199616A3/fr
Application granted granted Critical
Publication of EP2199616B1 publication Critical patent/EP2199616B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0666—Units comprising pumps and their driving means the pump being electrically driven the motor being of the plane gap type
    • 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
    • F04D13/021—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
    • F04D13/027—Details of the magnetic circuit
    • 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
    • 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
    • F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid
    • 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
    • F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • 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
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/60—Shafts
    • F05D2240/61—Hollow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making
    • Y10T29/49245—Vane type or other rotary, e.g., fan

Definitions

  • the invention relates to a centrifugal pump (1) comprising a multipart pump housing (4) comprising a suction nozzle (6) and a discharge nozzle (7), a pump impeller (5) mounted on a stationary axle (3), the pump impeller (5 ) is designed as a permanent magnet rotor, which cooperates with an electromagnetic stator.
  • the axial bearing ring serves for the axial bearing of the pump impeller on the axle.
  • the thrust bearing ring is received in a partially tubular heat-conducting body. This protrudes into the pump room.
  • a bearing receiving ring is provided between the heat conducting body and the Axiallagerring.
  • the axis protrudes freely according to a preferred development of the invention with a substantial part of its length in a cavity which is bounded by the heat-conducting body. This cavity is flowed through by the pumped medium to cool the pump.
  • the proportion of the freely projecting into the cavity axis is between 30 and 50% of the total length of the axis.
  • the method according to the invention for producing an exact alignment of the axis to an inner wall region of the pump head comprises the following steps: inserting the axis (3) into an injection mold for the pump head (2), original moldings of the pump head (2) with exact alignment of the axis (3 ) to an inner wall portion of the pump head (2).
  • the axle (3) is pressed into the pump head (2).
  • Fig. 1 shows a sectional view through a driven by an axial motor 56 centrifugal pump 1, with a pump housing 4, consisting of the first pump housing part 2 (pump head), a second pump housing part 24, with a split plate 18 and a drying chamber 54 delimiting a motor housing 14, a pump impeller 5, the is rotatably mounted on an axle 3 via a fixed bearing 12, which bearing 12 axially on the one hand to a first Axiallagerring 8 and on the other hand on a second Axiallagerring 9 is supported, consisting of aluminum, forming part of the stator 55 sauceleitmaschine 10, stator 15, stator windings 16, a circuit board 17, which is fastened with stator mounting screws 21 on the heat conducting body 10 on the second pump housing part 24.
  • a pump housing 4 consisting of the first pump housing part 2 (pump head), a second pump housing part 24, with a split plate 18 and a drying chamber 54 delimiting a motor housing 14, a pump impeller 5, the is rotatably mounted on an axle 3 via
  • a suction nozzle 6 is arranged, which is coaxial with the axis 3.
  • the axis 3 is fixed in a receiving mandrel 22, which is integral with the suction nozzle 6 via spokes 23.
  • the end of the mandrel 22 tapers to provide little resistance to the on-flowing pumping medium.
  • the center of the mandrel 22 forms a passage 25 to a flow channel 26 in the center of the hollow axis 3.
  • the heat-conducting body consists of a Statortragin 40, projecting in the central region of a stator support tube 39 and at the periphery of three spacers 38.
  • the connecting region of the heat-conducting body 10 with the gap plate 18 is sealed by a ring-cord seal 19, which is inserted in a circumferential groove 29 in the stator support tube 39.
  • Stator fastening screws 21 serve for fastening a printed circuit board 17 and for fastening the heat conducting body 10 on the second pump housing part 24.
  • Fig. 2 shows from top to bottom, the motor housing 4, with the molded connector housing 28, the stator mounting screws 21, the circuit board 17, the heat-conducting body 10, with the Statortragin 40, the spacer sleeves 38, the Statortragrohr 39 and the groove 29, the bearing housing ring 20, the thrust bearing 9, a stator yoke ring 27 which are fixed with yoke mounting screws 37, insulating bodies 30, with pins 31, wherein the insulating body 30 are wound with stator windings 16, the stator poles 15th , with larger cross-section pole pieces 32, a rotor magnet 33, a rotor return ring 34, the fixed bearing 12, with notches 41 for closer connection with the pump impeller 5, a cover plate 36, the second pump housing part 24 with the gap plate 18, the axis 3, the first pump housing 2 (pump head) a mounting ring 35, the suction nozzle 6 and a discharge nozzle 7.
  • the sake of clarity is in Fig. 2 the order of the components partially reversed.
  • the pump motor from the FIGS. 1 and 2 It is an electronically commutated DC motor with aligned parallel to the axis of rotation single poles, each with a solenoid.
  • the engine has an axial air gap.
  • the return ring 27 of the stator consists of a sheet stack.
  • the stator poles 15 are manufactured by powder metallurgy. Return ring 27 and pole 15 are bolted together and to the stator body.
  • the printed circuit board 17 is screwed to the heat conducting body 10 and the second pump housing part 24.
  • the pump impeller 5 forms the permanent magnet rotor of the DC motor, with the rotor magnet 33, the rotor yoke ring 34 and the hollow cylindrical bearing 12.
  • the rotor magnet 33, and the rotor yoke 34th The rotor magnet 33, and the rotor yoke 34th
  • Fig. 3 shows spatial views of the jacketleit stresses 10, with the Statortragin 40, the Statortragrohr 39, the spacer sleeves 38, the groove 29, a receiving space 42 for the bearing receiving ring 20 and pole mounting recesses 43rd
  • Fig. 4 shows spatial views of the first pump housing part 2, with the mandrel 22, the spokes 23, the passage 25 and a receiving space for the first thrust bearing ring 44th
  • Fig. 5 shows spatial views of the second pump housing part 24, with the gap plate 18 having in the region of the pole to be mounted recesses 45 to obtain the smallest possible air gap in the magnetic circuit of the motor, a central passage 46 for the axis 3 and three threaded bushings 47 for attachment of the stator using the stator mounting screws.
  • Fig. 6 shows a sectional view through the first pump housing part 2 with the mounted fixed axis 3, with its flow channel 26, the passage 25, the first Axliallagerring 8, the spokes 23 and the suction nozzle 6.
  • the axis has a notch 48, which is in intimate communication with ensures the mandrel.
  • Fig. 7 shows an enlarged partial sectional view of the centrifugal pump 1 according to the invention, this is designed so that a continuous cooling and degassing from a pressure range 51 forth via the "air gap” 49 and an annular gap 50 between the second thrust ring 9 and the axis 3 in the cavity 11th and from there via the flow channel 26 of the hollow shaft 3 and the passage 25 of the mandrel 22 back into the suction region 52 extends.
  • the peculiarity here is the large area over which the heat-conducting body 10, which consists of the good heat-conducting aluminum, is in contact with the conveying medium.
  • the size of this surface is determined by the length of the cavity 11, its diameter, the length of the Statortragrohrs 39, which projects into the pump chamber 13 and its diameter.
  • the fluid is forced into a kind of meandering course and can take longer than in previously known solutions heat from the heat-conducting body 10 and carry away.
  • this large heat transfer surface size is comparable to comparable pumps not enlarged and there is also only a small annular sealing area available, which can be sealed by simple means, as here with the inserted into the groove 29 ring cord seal 19.
  • Fig. 7 is clearer than in Fig. 1 a gap 53 between the cover plate 36 of the pump impeller 5 and the first pump housing part 2 can be seen. This gap 53 must be as small as possible in order to achieve a high degree of efficiency.
EP09012896.8A 2008-12-19 2009-10-13 Pompe centrifuge avec arbre fixe Not-in-force EP2199616B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008064099.9A DE102008064099B4 (de) 2008-12-19 2008-12-19 Kreiselpumpe mit einer feststehenden Achse

Publications (3)

Publication Number Publication Date
EP2199616A2 true EP2199616A2 (fr) 2010-06-23
EP2199616A3 EP2199616A3 (fr) 2012-07-11
EP2199616B1 EP2199616B1 (fr) 2014-12-10

Family

ID=41319468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09012896.8A Not-in-force EP2199616B1 (fr) 2008-12-19 2009-10-13 Pompe centrifuge avec arbre fixe

Country Status (3)

Country Link
US (1) US8303268B2 (fr)
EP (1) EP2199616B1 (fr)
DE (1) DE102008064099B4 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103696979A (zh) * 2013-12-26 2014-04-02 重庆水泵厂有限责任公司 轴可自由膨胀或自由收缩的离心泵
CN104024644A (zh) * 2011-12-30 2014-09-03 皮泊弗罗制造公司 具有位于叶轮内的电磁联轴器的叶片泵
CN104196750A (zh) * 2014-09-01 2014-12-10 青蛙泵业有限公司 一种深井泵转子长轴及其加工工艺
WO2017054310A1 (fr) * 2015-09-29 2017-04-06 佛山市威灵洗涤电机制造有限公司 Pompe centrifuge
EP3379085B1 (fr) * 2017-03-23 2022-07-27 Volkswagen Aktiengesellschaft Rotor externe de pompe encapsulé et équilibré

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO327557B2 (no) * 2007-10-09 2013-02-04 Aker Subsea As Beskyttelsessystem for pumper
KR101237023B1 (ko) * 2010-05-19 2013-02-25 주식회사 아모텍 완전 방수구조를 갖는 유체 펌프
WO2012042919A1 (fr) * 2010-09-27 2012-04-05 日機装株式会社 Connecteur étanche à la pression et antidéflagrant
US8931455B2 (en) * 2012-03-23 2015-01-13 Boots Rolf Hughston Rotary engine
KR101481627B1 (ko) 2012-06-11 2015-01-14 주식회사 아모텍 워터 펌프
TW201634817A (zh) * 2015-03-30 2016-10-01 林聖梁 抽水馬達裝置
CN106300722A (zh) * 2015-05-18 2017-01-04 德昌电机(深圳)有限公司 电机与电动泵
DE102016202417A1 (de) * 2016-02-17 2017-08-17 Bühler Motor GmbH Kreiselpumpe
DE102016206406A1 (de) 2016-04-15 2017-10-19 Bühler Motor GmbH Pumpenmotor mit einem Spalttopf
US10865794B2 (en) 2017-01-27 2020-12-15 Regal Beloit Australia Pty Ltd Centrifugal pump assemblies having an axial flux electric motor and methods of assembly thereof
US10731653B2 (en) * 2017-01-27 2020-08-04 Regal Beloit Australia Pty Ltd Centrifugal pump assemblies having an axial flux electric motor and methods of assembly thereof
US10830252B2 (en) 2017-01-27 2020-11-10 Regal Beloit Australia Pty Ltd Centrifugal pump assemblies having an axial flux electric motor and methods of assembly thereof
US10584739B2 (en) 2017-01-27 2020-03-10 Regal Beloit Australia Pty Ltd Centrifugal pump assemblies having an axial flux electric motor and methods of assembly thereof
US11323003B2 (en) 2017-10-25 2022-05-03 Flowserve Management Company Compact, modular, pump or turbine with integral modular motor or generator and coaxial fluid flow
US11724813B2 (en) 2021-05-24 2023-08-15 General Electric Company Midshaft rating for turbomachine engines
CN113738657B (zh) * 2021-11-03 2022-03-15 西安泵阀总厂有限公司 稀土永磁电机驱动离心泵及自润滑方法

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DE19646617A1 (de) 1996-11-12 1998-05-14 Pierburg Ag Kühlmittelpumpe mit elektrisch kommutiertem Elektromotor
JP2002257074A (ja) 2001-02-28 2002-09-11 Asmo Co Ltd 流体ポンプ装置
EP1329638A1 (fr) 2002-01-18 2003-07-23 CP Pumpen AG Pompe centrifuge à entrainement magnétique
DE102006034385A1 (de) 2006-07-25 2008-01-31 Robert Bosch Gmbh Fluidpumpe sowie Verfahren zur Herstellung einer Fluidpumpe

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013384A (en) 1974-07-18 1977-03-22 Iwaki Co., Ltd. Magnetically driven centrifugal pump and means providing cooling fluid flow
JPS5114803A (en) 1974-07-29 1976-02-05 Nippon Steel Corp Koroheno genryosonyuhoho
DE19646617A1 (de) 1996-11-12 1998-05-14 Pierburg Ag Kühlmittelpumpe mit elektrisch kommutiertem Elektromotor
JP2002257074A (ja) 2001-02-28 2002-09-11 Asmo Co Ltd 流体ポンプ装置
EP1329638A1 (fr) 2002-01-18 2003-07-23 CP Pumpen AG Pompe centrifuge à entrainement magnétique
DE102006034385A1 (de) 2006-07-25 2008-01-31 Robert Bosch Gmbh Fluidpumpe sowie Verfahren zur Herstellung einer Fluidpumpe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104024644A (zh) * 2011-12-30 2014-09-03 皮泊弗罗制造公司 具有位于叶轮内的电磁联轴器的叶片泵
CN104024644B (zh) * 2011-12-30 2016-02-24 皮泊弗罗制造公司 具有位于叶轮内的电磁联轴器的叶片泵
CN103696979A (zh) * 2013-12-26 2014-04-02 重庆水泵厂有限责任公司 轴可自由膨胀或自由收缩的离心泵
CN103696979B (zh) * 2013-12-26 2016-03-30 重庆水泵厂有限责任公司 轴可自由膨胀或自由收缩的离心泵
CN104196750A (zh) * 2014-09-01 2014-12-10 青蛙泵业有限公司 一种深井泵转子长轴及其加工工艺
WO2017054310A1 (fr) * 2015-09-29 2017-04-06 佛山市威灵洗涤电机制造有限公司 Pompe centrifuge
EP3379085B1 (fr) * 2017-03-23 2022-07-27 Volkswagen Aktiengesellschaft Rotor externe de pompe encapsulé et équilibré

Also Published As

Publication number Publication date
DE102008064099A1 (de) 2010-07-01
EP2199616A3 (fr) 2012-07-11
EP2199616B1 (fr) 2014-12-10
DE102008064099B4 (de) 2016-05-04
US20100158725A1 (en) 2010-06-24
US8303268B2 (en) 2012-11-06

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