EP0618369B1 - Topfgehäusepumpe - Google Patents

Topfgehäusepumpe Download PDF

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Publication number
EP0618369B1
EP0618369B1 EP94103537A EP94103537A EP0618369B1 EP 0618369 B1 EP0618369 B1 EP 0618369B1 EP 94103537 A EP94103537 A EP 94103537A EP 94103537 A EP94103537 A EP 94103537A EP 0618369 B1 EP0618369 B1 EP 0618369B1
Authority
EP
European Patent Office
Prior art keywords
insert
spiral
centrifugal pump
housing
pump
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
EP94103537A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0618369A1 (de
Inventor
Alexander Nicklas
Jürgen Schill
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.)
KSB AG
Original Assignee
KSB 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 KSB AG filed Critical KSB AG
Publication of EP0618369A1 publication Critical patent/EP0618369A1/de
Application granted granted Critical
Publication of EP0618369B1 publication Critical patent/EP0618369B1/de
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
    • 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
    • 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps

Definitions

  • the invention relates to a centrifugal pump according to the preamble of the main claim.
  • Centrifugal pump types of this type also known as double-casing pumps, jacket casing pumps and / or so-called "barrel-type" pumps, are centrifugal pumps which are surrounded by a pot-like casing.
  • the pot equipped with suction and pressure nozzles, is firmly closed with a lid in a plane perpendicular to the shaft.
  • the drive shaft is passed through the cover and a shaft seal.
  • the advantage of this type of housing is that when the pump is dismantled, the pot housing can remain connected to the pipes and the foundation.
  • these are multi-stage pumps for use as high and ultra-high pressure pumps, in particular also as boiler feed pumps.
  • a forged housing can be used as a pot, which has the highest resistance to the pressures that occur. In order to operate this type of pump with the best possible efficiency, a very precise coordination of impellers and downstream guide wheels is required for the respective application. This requires a considerable design and manufacturing effort for every purpose.
  • a single-stage centrifugal pump is known from GB-A-1 081 164, the impeller of which pumps into an annular space. From the The pumped medium exits the annular space through a tangential outlet nozzle.
  • a diffuser-shaped insert protrudes into the annular space, with a free space remaining on both sides thereof.
  • the insert protruding into the annular space in a protruding manner is provided with a flow-carrying lining on its side facing away from the flow.
  • US-A-2 708 883 shows a multi-stage pump design in which stator inserts are arranged after the impellers within a housing. The inserts develop in a radial direction and the last insert opens into a radially developed spiral.
  • the object of the invention is to develop a design for such pump housing types, with the aid of which easier adaptation to different systems is possible with improved efficiency.
  • An embodiment of the invention provides that the radially and / or axially developed spiral is part of a housing cover and / or the last stage housing.
  • a spiral shape has proven to be advantageous, which first develops in the radial direction and then in the axial direction. If larger rooms are available, other directions of development of the spiral are also possible. It is thus advantageously possible to dispense with an enlargement of the pot and the previously available annular space, in which the delivery medium emerging from the centrifugal pump is collected and fed to the pressure port, can be used for measures to improve efficiency.
  • the volume of the pump can be kept constant through the appropriate design of the lid closing the pot and its use as a performance-enhancing flow-conducting component.
  • a further embodiment provides that the spiral insert is arranged after the stator insert when viewed in the direction of flow. This makes it possible to adapt only the idler wheel insert to a turned and / or wider impeller within a desired n q range of the impeller. Changes or adjustments to the spiral insert can thus be completely omitted. It is also possible that To design the guide wheel insert itself without blades and to provide it as a kind of ring diffuser, from which a transfer to the spiral insert takes place. This depends on the overall circumstances under which the pump is to be used.
  • another embodiment of the invention provides that it can be inserted into the pressure nozzle from the inside of the housing. So it is easily possible, for example with a protruding collar, to have the insert rest directly on the pot housing. Furthermore, there is the advantage that the diffuser-shaped insert can be made from a particularly resistant material in order to be able to withstand the high flow velocities in the area of the last pump stage. The pot housing itself can then be produced from a material which is less expensive and which, for reasons of wear resistance, is provided with a corresponding plating in the area of the liquid-carrying surfaces.
  • the spiral insert 1 shows a meridian section through the spiral insert 1 with a downstream diffuser insert 2, the stator insert not being shown for reasons of clarity.
  • the spiral 3 widens in the spiral insert 1 over approximately 100 ° to its maximum diameter D, in order to then experience a cross-sectional widening in the axial direction with the same diameter.
  • the spiral insert In the area of the transition from the spiral insert 1 to the pressure nozzle insert 2, the spiral insert has a largest cross-sectional area. The spiral begins in the area of the stator outlet diameter D L.
  • the pressure port insert 2 has a diffuser-shaped extension 4 in its interior, which largely corresponds to the cross section of a pressure line to be connected in the area of the outlet 5.
  • the surface 6 of the diffuser insert 2 facing the spiral insert 1 is chamfered in the shape of a cylinder, in order to enable a good adaptation to the spiral insert 1.
  • a projecting collar 7 serves to hold the diffuser insert 2 within the pot housing, which is only indicated by hatching.
  • FIG. 2 a section according to II-II of FIG. 1, corresponds to a longitudinal section through a pot housing 8 in the area of the last stage. It can be seen here that a diffuser insert 2 is inserted into the pressure socket 9 from the inside of the pump into the pot housing 8. A last stage housing 10 inserted from the outside into the pot housing 8 holds the diffuser insert 2 in position. Between an end face 11 of the last stage housing 10 and a cover 12 which closes the pot housing 8, a guide wheel insert 13 is arranged, which is held in position by elements 14 preventing rotation. The last one shown here Impeller 15 is arranged on a shaft 16, which is held by a sealing and bearing housing 17 located within cover 12.
  • stator, stage housing and spiral inserts as well as impellers can be used to easily adapt the efficiency to the respective system conditions.
  • the spiral insert 1 which was designed here as an independent component, can also be an integral part of the cover 12 closing the pot housing 8. The same applies to the stator insert 13. It is also readily possible to transfer the function of the spiral insert and / or the stator insert 13 to the last stage housing part 10.
  • the free spiral cross section is marked here with 18.
  • the individual cross-sectional extensions of the spiral are shown in the representation of FIG. 3.
  • the area outlined with a thick line corresponds to a free spiral cross section 18 at a 360 ° wrap angle, i. H. at the spiral outlet.
  • the thin lines arranged within this area which are provided with degrees, represent the spiral cross section which is marked with identical degrees in FIG. 1.
  • the spiral In the range from approx. 100 ° spiral wrap angle, the spiral has a constant outer diameter.
  • the spiral cross section then only changes laterally in the axial direction and, if appropriate, also radially inwards.
  • FIG. 4 shows a section along line IV-IV of FIG. 1 through the last stage of the pump at a spiral angle of approximately 180 °.
  • the spiral cross section 18 of the spiral corresponds to that from FIG. 3 at 180 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP94103537A 1993-03-31 1994-03-09 Topfgehäusepumpe Expired - Lifetime EP0618369B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4310467A DE4310467A1 (de) 1993-03-31 1993-03-31 Topfgehäusepumpe
DE4310467 1993-03-31

Publications (2)

Publication Number Publication Date
EP0618369A1 EP0618369A1 (de) 1994-10-05
EP0618369B1 true EP0618369B1 (de) 1997-05-21

Family

ID=6484325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103537A Expired - Lifetime EP0618369B1 (de) 1993-03-31 1994-03-09 Topfgehäusepumpe

Country Status (4)

Country Link
US (1) US5522701A (ja)
EP (1) EP0618369B1 (ja)
JP (1) JP2794160B2 (ja)
DE (2) DE4310467A1 (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8398361B2 (en) 2008-09-10 2013-03-19 Pentair Pump Group, Inc. High-efficiency, multi-stage centrifugal pump and method of assembly
JP5889622B2 (ja) * 2010-12-14 2016-03-22 株式会社クボタ 多段ポンプ
JP5649055B2 (ja) 2011-01-05 2015-01-07 株式会社日立製作所 バーレル型多段ポンプ
DE102012107441B4 (de) * 2012-08-14 2016-05-25 Ebm-Papst St. Georgen Gmbh & Co. Kg Radiallüfter mit Spiralgehäuse
WO2014047516A1 (en) * 2012-09-21 2014-03-27 Energy Recovery Inc. Hydraulic system with modular inserts
JP6049852B2 (ja) 2013-02-26 2016-12-21 三菱重工コンプレッサ株式会社 圧縮機の組立方法、および、バンドル案内装置
DE102014214805A1 (de) 2014-07-29 2016-02-04 Ksb Aktiengesellschaft Mantelgehäusepumpe
JP6920819B2 (ja) * 2017-01-10 2021-08-18 三菱重工業株式会社 立形ポンプ、そのケーシングカバー及び尿素合成プラント並びに立形ポンプのケーシングカバー製造方法
EP3486493B1 (en) * 2017-01-10 2020-05-13 Mitsubishi Heavy Industries, Ltd. Vertical pump and urea synthesizing plant
DE102017103933A1 (de) 2017-02-24 2018-08-30 Minebea Mitsumi Inc. Strömungsoptimiertes Lüftergehäuse
US10920652B2 (en) 2017-07-12 2021-02-16 Ford Global Technologies, Llc Coolant pump for an internal combustion engine
DE102018218989A1 (de) 2018-11-07 2020-05-07 KSB SE & Co. KGaA Mantelgehäusepumpe
DE102019001882A1 (de) * 2019-03-19 2020-09-24 KSB SE & Co. KGaA Mantelgehäusepumpe und Herstellungsverfahren für eine Mantelgehäusepumpe
CN113266576A (zh) 2021-05-28 2021-08-17 惠州汉旭五金塑胶科技有限公司 一种液冷泵腔室流道结构及液冷泵

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE21571C (de) * G. HAMBRL'CH in Berlin Neuerungen an Indikatoren zur Untersuchung von Dampfmaschinen
US2161695A (en) * 1938-08-01 1939-06-06 Pacific Pump Works Rotary pump for hot fluids
GB526732A (en) * 1939-03-27 1940-09-24 Mather & Platt Ltd Improvements in multi-stage centrifugal pumps
US2708883A (en) * 1950-03-03 1955-05-24 Escher Wyss Ag Arrangement for use in radial centrifugal compressors and pumps for the conversion of kinetic energy of the flowing medium into pressure energy
US2651998A (en) * 1951-06-29 1953-09-15 Dayton Pump & Mfg Company Centrifugal pump
FR1251632A (fr) * 1960-03-17 1961-01-20 G & J Weir Ltd Perfectionnements aux pompes centrifuges
US3091182A (en) * 1960-12-08 1963-05-28 Shell Oil Co Centrifugal pumps
DE1453723A1 (de) * 1963-07-19 1969-07-31 Barske Ulrich Max Kreiselpumpe,insbesondere fuer kleine bis mittlere Foerderstroeme
US3370542A (en) * 1965-10-21 1968-02-27 Dresser Ind Temperature detection device
US3689931A (en) * 1971-05-19 1972-09-05 Luis R Pagan Fortis Centrifugal pumps
US4076450A (en) * 1976-01-14 1978-02-28 United Centrifugal Pumps Double volute pump with replaceable lips
DE2614163C2 (de) * 1976-04-02 1977-10-13 Balcke-Dürr AG, 4030 Ratingen Mehrstufige Kreiselpumpe
US4893986A (en) * 1979-10-29 1990-01-16 Rockwell International Corporation High-pressure high-temperature coal slurry centrifugal pump and let-down turbine
DE3011888A1 (de) * 1980-03-27 1981-10-01 Richard 7066 Baltmannsweiler Halm Kreiselpumpe
CH669979A5 (ja) * 1986-04-30 1989-04-28 Sulzer Ag
DE4041545A1 (de) * 1990-02-21 1991-08-22 Klein Schanzlin & Becker Ag Kreiselpumpe
US5180280A (en) * 1990-05-28 1993-01-19 Toshiharu Honda Centrifugal pump
US5076758A (en) * 1990-07-18 1991-12-31 Ingersoll-Rand Company Centrifugal pumps

Also Published As

Publication number Publication date
EP0618369A1 (de) 1994-10-05
DE4310467A1 (de) 1994-10-06
JP2794160B2 (ja) 1998-09-03
DE59402797D1 (de) 1997-06-26
JPH0754798A (ja) 1995-02-28
US5522701A (en) 1996-06-04

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