EP0248104B1 - Kreiselpumpe - Google Patents

Kreiselpumpe Download PDF

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Publication number
EP0248104B1
EP0248104B1 EP86107893A EP86107893A EP0248104B1 EP 0248104 B1 EP0248104 B1 EP 0248104B1 EP 86107893 A EP86107893 A EP 86107893A EP 86107893 A EP86107893 A EP 86107893A EP 0248104 B1 EP0248104 B1 EP 0248104B1
Authority
EP
European Patent Office
Prior art keywords
sub
block
input
blocks
diameter
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
EP86107893A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0248104A1 (de
Inventor
Stephen Medgyesy
Fernando Bermudez
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.)
Sulzer AG
Original Assignee
Gebrueder Sulzer AG
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 Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Publication of EP0248104A1 publication Critical patent/EP0248104A1/de
Application granted granted Critical
Publication of EP0248104B1 publication Critical patent/EP0248104B1/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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps 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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F04D1/063—Multi-stage pumps of the vertically split casing type
    • F04D1/066—Multi-stage pumps of the vertically split casing type the casing consisting of a plurality of annuli bolted together
    • 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
    • F04D29/18—Rotors
    • F04D29/20—Mounting rotors on shafts
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y10S415/912—Interchangeable parts to vary pumping capacity or size of pump

Definitions

  • the invention relates to a centrifugal pump with an inner block which can be inserted axially into a radially undivided (pot) housing and which contains two multi-stage partial blocks separated from one another by a central piece to form two independent partial pumps, the diameter of the drive-side partial block being smaller than the housing bore of the drive block away from the drive, and wherein the largest outer diameter of the drive-side pump bearing is smaller than the smallest diameter of the housing bore receiving the inner block.
  • a centrifugal pump of the type mentioned above is known from CH-A-637 185.
  • the inner block of the known construction which is inserted axially as a whole into the housing from one side, the two partial blocks are built up from the center towards the end . This means that the impellers can only be pushed and wedged onto the shaft, but cannot be shrunk on, since the back of the impeller on the non-drive part block, on which the hub area of the shrink fit is located, is no longer accessible for heating.
  • pumps of this type are to be used for high pressures - for example greater than 200 bar - and / or high speeds - for example greater than 300 rpm, shrinking of the impellers is practically an imperative for reasons of strength and rotor dynamics.
  • the object of the invention is to design the known construction so that the use of impellers shrunk onto the shaft is possible.
  • this object is achieved in that the impellers mounted from the side remote from the drive are shrunk onto the shaft, for which purpose the shaft diameter between the sub-blocks is reduced by a step-shaped shoulder for the sub-block remote from the drive, and the ring-shaped shrink fit areas of the impellers of this sub-block are on the latter Suction side are located, further characterized in that on the circumference of the last stage stator of the drive-side sub-block alternating with this sub-block holding axial tie bolts in recesses bolts and nuts are arranged, which fix the drive-side sub-block and the center piece separating the two sub-pumps relative to each other.
  • the inner block so that it can be assembled in one direction from the drive end.
  • the reduction of the shaft diameter for the sub-block away from the drive makes it possible to increase the radial thickness of the hub on the inlet side of the impellers present in this sub-block, without necessarily changing the hydraulic characteristics - such as the impeller diameter and the specific speed or edge shape index.
  • the radial reinforcement makes it possible to move the area of the shrink fit to the inlet side of the impeller, so that accessibility for heating the shrink area is ensured.
  • the reduction of the shaft diameter is made possible, in particular in advantageous embodiments of the invention, in which the two sub-blocks are hydraulically identical, in that the drive power to be transmitted from the shaft to the sub-pump remote from the drive is only half of the total power.
  • the two sub-pumps - apart from the speed - are independent of each other, they can be connected in series to increase the delivery head with the same delivery rate or parallel to each other to increase the delivery rate with the same delivery rate.
  • one of the sub-pumps as a turbine to drive the other sub-pump when there is a corresponding supply of pressurized water.
  • 1 is an axially undivided housing 1 of a pump, an inner block 2 with a left-handed sub-block 3 and a right-handed sub-block 4;
  • the impellers 7 and 8 of both sub-blocks 3 and 4 are shrunk onto the drive shaft 13, which is supported on both sides in bearings 14 and 15, respectively.
  • Both sub-blocks 3 and 4 form two separate sub-pumps I and 11, which are independent of one another apart from the common drive shaft 13. Each of the sub-blocks 3 and 4 is therefore assigned a separate suction or pressure port 5 or 6 on the housing 1.
  • the shrink fit area 9 of the impellers 7 is located on them Back.
  • the shaft 13 has a step-shaped shoulder 40, against which a throttle bush 41 bears.
  • the hubs of the impellers 8 on the inlet side can be made radially thicker than the inlet-side hubs of the impellers 7 in order to achieve the same diameter D 3 in sub-block 4, which is one of the characteristics for the hydraulic design of the two sub-pumps and II forms.
  • the hydraulic characteristic data should be the same for both sub-blocks 3 and 4 or sub-pumps I and 11 in the pump according to FIG. 1; therefore, the outer diameters Di of the impellers 7 and 8 and their widths are the same for both sub-blocks 3 and 4 with corresponding steps.
  • the radially thicker hub areas of the impellers 8 allow the shrink fit area 10 to be provided on their inlet side.
  • connection from the last stage stator 12a of the sub-block 3 to the center piece 23 is made by means of separate screw bolts 16 and nuts 17, which are arranged on the circumference of the stage stator 12a alternately with the tension bolts 20 in recesses 28 and 30 (FIG. 4), as later is described in more detail.
  • the drive-remote bearing 15 is supported by a cover 24 from the housing 1, which is held by a type of bayonet lock 25 and is sealed with the aid of a flange ring 29 (DE-C 34 10 931).
  • the bearing 14 is carried by the inlet housing 26, which is centered in a bore 27 in the housing 1 and at the same time forms the drive-side cover of the housing 1.
  • Only schematically indicated mechanical seals 37 of conventional construction are arranged between the shaft 13 and the cover 24 or 26.
  • the pump is powered by a prime mover, not shown, e.g. an electric motor, which is connected to the pump shaft 13 by means of a coupling 31.
  • a prime mover not shown, e.g. an electric motor, which is connected to the pump shaft 13 by means of a coupling 31.
  • the hydraulic characteristic data of the partial pumps and II are different from one another; therefore, the impellers 32 of the sub-pump 11 remote from the drive have a hub diameter D s different from the diameter D 3 . Likewise, their outer diameter D 2 and their widths have changed compared to those of the impellers 8 and 7, respectively.
  • the different hydraulic characteristic data are necessary because the pump according to FIG. 2 is designed so that after the first sub-pump I, the delivery rate should be divided and a further pressure increase should only take place for a partial amount.
  • a pressure port 34 is connected for withdrawing a part of the quantity conveyed by this sub-block 3 and, on the other hand, an inner flow path 35 running in the housing 1 for a further pressure increase of the other part of the Funding is available through an internal series connection of sub-pump II to sub-pump I.
  • the required division of the partial quantities into the two flow paths can take place with the aid of an adjustable or controllable throttle device in the pressure line to be connected to the pressure port 34, which is not expressly shown.
  • the recesses 28 and 30 are distributed on the circumference of the stator 12a of the last stage of the sub-block 3 at uniform angular intervals of ⁇ / 6. Screws 16 end in the recesses 28, which are screwed into the center piece 22 on the one hand and are connected to the step stator 12a by nuts 17 on the other hand.
  • the recesses 30 accommodate the drive-distant ends of the tension bolts 20, which hold the stator of the sub-block 3 together via nuts 18.
  • the assembly can take place, for example, in such a way that, after the sub-block 3 has been set up and fixed, the middle piece 22, into which the screw bolts 16 are already screwed, is inserted into bores 36 (FIG. 3) of the stepped guide wheel 12a of the sub-block 3 and from the periphery
  • the nuts 17 can be fixed. If the sub-block 3 and the middle piece 22 are firmly connected to one another, the step-by-step construction of the sub-block 4 can be carried out, with the impellers 8 and 32 being heated according to the invention in the shrink fit area 10 on their inlet side facing away from the drive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP86107893A 1986-04-30 1986-06-10 Kreiselpumpe Expired EP0248104B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1779/86A CH669979A5 (nl) 1986-04-30 1986-04-30
CH1779/86 1986-04-30

Publications (2)

Publication Number Publication Date
EP0248104A1 EP0248104A1 (de) 1987-12-09
EP0248104B1 true EP0248104B1 (de) 1989-12-13

Family

ID=4218416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86107893A Expired EP0248104B1 (de) 1986-04-30 1986-06-10 Kreiselpumpe

Country Status (4)

Country Link
US (1) US4778334A (nl)
EP (1) EP0248104B1 (nl)
CH (1) CH669979A5 (nl)
DE (1) DE3667525D1 (nl)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4031936A1 (de) * 1990-10-09 1992-04-16 Klein Schanzlin & Becker Ag Leiteinrichtung
DE4232020A1 (de) * 1992-09-24 1994-03-31 Sihi Gmbh & Co Kg Kreiselmaschine, insbesondere Kreiselpumpe, in Gliedergehäusebauart
DE4310467A1 (de) * 1993-03-31 1994-10-06 Klein Schanzlin & Becker Ag Topfgehäusepumpe
US5456577A (en) * 1994-07-28 1995-10-10 Ingersoll-Dresser Pump Company Centrifugal pump with resiliently biasing diffuser
GB0117941D0 (en) * 2001-07-24 2001-09-19 Weir Pumps Ltd Pump assembly
EP1420166B1 (de) * 2002-11-12 2005-09-07 Sulzer Pumpen Ag Hochdruck-Kreiselpumpe in einem Topfgehäuse mit einem Druckdeckel
DE50301139D1 (de) 2002-11-12 2005-10-13 Sulzer Pumpen Ag Winterthur Hochdruck-Kreiselpumpe in einem Topfgehäuse mit einem Druckdeckel
ITMI20032149A1 (it) * 2003-11-07 2005-05-08 Nuovo Pignone Spa Compressore centrifugo multistadio con cassa apribile orizzontalmente
EP1799101A4 (en) * 2004-09-02 2008-11-19 Proteus Biomedical Inc METHOD AND DEVICES FOR TISSUE ACTIVATION AND MONITORING
US7871243B2 (en) * 2007-06-05 2011-01-18 Honeywell International Inc. Augmented vaneless diffuser containment
TW201031467A (en) * 2009-02-19 2010-09-01 Galemed Corp Mist sprayer
US8267645B2 (en) * 2009-07-31 2012-09-18 Baker Hughes Incorporated Shaftless centrifugal pump
JP5260577B2 (ja) * 2010-02-24 2013-08-14 三菱重工業株式会社 二重ケーシング型ポンプ及び二重ケーシング型ポンプの性能調整方法
RU2459117C1 (ru) * 2011-02-04 2012-08-20 Общество С Ограниченной Ответственностью Научно-Производственное Предприятие "Насостехкомплект" Насос центробежный блочно-модульный
EP2719900B1 (de) * 2012-10-09 2020-07-15 Sulzer Management AG Pumpe
EP2759710A1 (en) * 2013-01-23 2014-07-30 Sulzer Pumpen AG A centrifugal pump and a sleeve for coupling the shaft of a centrifugal pump to a shaft of a drive motor
US9593694B2 (en) 2014-04-04 2017-03-14 Sulzer Management Ag Pump
DE102014218936A1 (de) * 2014-09-19 2016-03-24 Siemens Aktiengesellschaft Radialturbofluidenergiemaschine, Verfahren zur Montage
US10718346B2 (en) * 2015-12-21 2020-07-21 General Electric Company Apparatus for pressurizing a fluid within a turbomachine and method of operating the same
CN106089795A (zh) * 2016-06-20 2016-11-09 江苏大学 一种三工况平稳运行离心泵结构及其设计方法
CN106402036B (zh) * 2016-12-06 2019-01-25 江苏海天科技有限公司 一种卧式双壳径向剖分对称布置筒式多级离心泵
CN111207080B (zh) * 2020-01-22 2020-12-15 乐清市芮易经济信息咨询有限公司 一种带轴开中分便拆结构的化工泵
RU203322U1 (ru) * 2020-11-30 2021-03-31 Акционерное общество "ГМС Ливгидромаш" Центробежный двухкорпусной многоступенчатый насос со встречным расположением групп рабочих колес

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118386A (en) * 1964-01-21 Multi-stage centrifugal pump
US2248312A (en) * 1938-10-03 1941-07-08 Byron Jackson Co Double casing pump
US2265834A (en) * 1939-12-21 1941-12-09 Standard Oil Dev Co Pump lubrication
US2859698A (en) * 1956-03-21 1958-11-11 United States Steel Corp Centrifugal pump
US3105632A (en) * 1960-03-14 1963-10-01 Dresser Ind High pressure centrifugal compressor
US3232235A (en) * 1963-10-25 1966-02-01 Laval Turbine Pump
US3861825A (en) * 1970-12-21 1975-01-21 Borg Warner Multistage pump and manufacturing method
IT946916B (it) * 1971-07-13 1973-05-21 Carrier Corp Compressore centrifugo a due sezio ni a piu stadi
US3802795A (en) * 1972-04-19 1974-04-09 Worthington Cei Multi-stage centrifugal compressor
FR2295225A1 (fr) * 1974-12-16 1976-07-16 Europ Turb Vapeur Arbre de turbine a disques rapportes
CH637185A5 (en) * 1978-12-21 1983-07-15 Sulzer Ag Centrifugal pump
US4314396A (en) * 1979-03-05 1982-02-09 Sybron Corporation Separable blade agitator assembly and disassembly method
US4277223A (en) * 1979-11-29 1981-07-07 Guy F. Atkinson Company Case construction for multi-stage pump
JPS5870097A (ja) * 1981-10-23 1983-04-26 Hitachi Ltd 水平分割形ケ−シング
JPH0417762Y2 (nl) * 1985-06-19 1992-04-21

Also Published As

Publication number Publication date
CH669979A5 (nl) 1989-04-28
EP0248104A1 (de) 1987-12-09
DE3667525D1 (de) 1990-01-18
US4778334A (en) 1988-10-18

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