EP0985098B1 - Kreiselpumpe mit einer einlaufleiteinrichtung - Google Patents

Kreiselpumpe mit einer einlaufleiteinrichtung Download PDF

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Publication number
EP0985098B1
EP0985098B1 EP98925611A EP98925611A EP0985098B1 EP 0985098 B1 EP0985098 B1 EP 0985098B1 EP 98925611 A EP98925611 A EP 98925611A EP 98925611 A EP98925611 A EP 98925611A EP 0985098 B1 EP0985098 B1 EP 0985098B1
Authority
EP
European Patent Office
Prior art keywords
impeller
guide
vane
centrifugal pump
swirl
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
EP98925611A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0985098A1 (de
Inventor
Baogang Wang
Jürgen Schill
Dieter Hellmann
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 EP0985098A1 publication Critical patent/EP0985098A1/de
Application granted granted Critical
Publication of EP0985098B1 publication Critical patent/EP0985098B1/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
    • 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
    • F04D29/448—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers
    • 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
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes

Definitions

  • the invention relates to a centrifugal pump with an axial inlet and one Impeller upstream inlet guide device, which several rigid The guide vanes have one in each on their side facing the impeller or have an edge pointing against the direction of rotation of the impeller.
  • Centrifugal pumps with an axial inlet often have an inlet guiding device is connected upstream of the first impeller. Your job is a possible twist to take out of the liquid, so that after the inlet guide there is an axial flow.
  • the inlet guide device can consist of several evenly over the circumference of the Distributed guide vanes exist.
  • the guide vanes can be in the axis of the inlet are connected to each other and so a star or a cross form.
  • Inlet guidance devices are known from DE 471 149 and DE 649 668, whose blades are curved in or against the direction of rotation of the impeller to adapt to special inflow conditions or these bring about.
  • the curvature is arched and pulls with each constant axial extension over the entire radial course of the Shovel.
  • the curvature is only slight compared to the blade axial extension.
  • the angle of attack depends on the type of hydraulics is dependent. It can be determined on the basis of measurements, i. H. he can targeted to achieve different effects on the pump characteristic in all operating points.
  • the change achieved by the inlet guide device according to the invention Inflow leads to a performance-saving and the availability increasing operating point adjustment, since the rumor limit clearly to the left is moved. Due to the design of the invention, the Outflow on the impeller improved, so that secondary flows and Detachments behind the impeller blades can be reduced.
  • one or several of the guide vanes each on their side facing away from the impeller carry similar guide vanes in shape and size of the swirl vane. It shows that the flow guidance is still by such a guide vane is further improved.
  • the invention can be implemented with simple means if - as such known - the guide vanes arranged in the shape of a cross or a star are.
  • the centrifugal pump shown in FIG. 1 has a housing 1 with a upstream inlet nozzle 2.
  • An impeller 4 is arranged on a shaft 3.
  • a pressure connection 5 forms the end in the direction of flow.
  • the dimension S which is the distance from the center line of the guide vane 6 from the front edge of the impeller 4 indicates.
  • the dimension S which depends on the type of pump, especially the impeller geometry, is dependent - for example with the help of Try - to determine that the inlet guiding device an optimal Influences the flow and thus the pump characteristic.
  • the ratio of Guide vanes 6, the guide vanes 7 and the swirl vanes 8 to one another detect.
  • a possible angular range between + ⁇ and - ⁇ for is indicated here the direction of the twist scoops 8.
  • the positive angle + ⁇ points into the Direction of rotation of the impeller 4.
  • a negative angle - ⁇ leaves the guide vane 6 point against the direction of rotation of the impeller 4. Both directions can targeted use of the pump characteristics in the desired sense influence.
  • the number of guide vanes 6 depends on the geometry and the specific Characteristic of the pump determined. To determine this is in the range of Knowledge and skills of the relevant pump specialist.
  • FIGS. 3 and 4 For better recognition of the possible angular range for the employment of Swirl blade 8 on the guide blade 6, these are even further in FIGS. 3 and 4 shown clearly.
  • the blade thickness is also shown in these figures D.
  • the guide vane 6 has a height H L
  • the guide vane 7 has a height H V
  • the height of the swirl vane 8 is indicated by H D.
  • L L is the length of the guide vane 6.
  • L V indicates the length of the guide vane 7 and L D the length of the swirl vane 8.
  • the length and height of the guide vanes 6, the guide vanes 7 and the swirl vanes 8 are designed in such a way that they optimally influence the characteristic curve.
  • the swirl vane 8 develops its greatest influence in the area of the wall of the Inlet nozzle 2.
  • the Intensity reduced by the inlet guide When recirculation occurs in front of the impeller, the Intensity reduced by the inlet guide.
  • the Surface of the inlet guiding device as small as possible and hydraulically smooth should be carried out to reduce the friction loss.
  • the blades 6, 7 and 8 of the pre-guide device can also be profiled his.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP98925611A 1997-05-28 1998-05-18 Kreiselpumpe mit einer einlaufleiteinrichtung Expired - Lifetime EP0985098B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19722353A DE19722353A1 (de) 1997-05-28 1997-05-28 Kreiselpumpe mit einer Einlaufleiteinrichtung
DE19722353 1997-05-28
PCT/EP1998/002908 WO1998054471A1 (de) 1997-05-28 1998-05-18 Kreiselpumpe mit einer einlaufleiteinrichtung

Publications (2)

Publication Number Publication Date
EP0985098A1 EP0985098A1 (de) 2000-03-15
EP0985098B1 true EP0985098B1 (de) 2003-05-02

Family

ID=7830757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98925611A Expired - Lifetime EP0985098B1 (de) 1997-05-28 1998-05-18 Kreiselpumpe mit einer einlaufleiteinrichtung

Country Status (6)

Country Link
US (1) US6273677B1 (ja)
EP (1) EP0985098B1 (ja)
JP (1) JP3802572B2 (ja)
DE (2) DE19722353A1 (ja)
ES (1) ES2196563T3 (ja)
WO (1) WO1998054471A1 (ja)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD2432C2 (ro) * 2001-09-28 2004-11-30 Сочиетатя Пе Акциунь "Молдовахидромаш" Evacuator al pompei dinamice
MD2246C2 (ro) * 2001-09-28 2004-02-29 Сочиетатя Пе Акциунь "Молдовахидромаш" Evacuator cu palete al pompei centrifuge
US7089963B2 (en) * 2002-11-26 2006-08-15 David Meheen Flow laminarizing device
DE102007048019A1 (de) * 2007-10-06 2009-04-09 Bayerische Motoren Werke Aktiengesellschaft Pumpe
CA2736952C (en) 2008-09-10 2016-11-29 Pentair Pump Group, Inc. High-efficiency, multi-stage centrifugal pump and method of assembly
PL2172654T5 (pl) * 2008-10-01 2014-04-30 Grundfos Management As Agregat z pompą wirową
GB0821089D0 (en) * 2008-11-19 2008-12-24 Ford Global Tech Llc A method for improving the performance of a radial compressor
CN101929465B (zh) * 2009-06-19 2013-12-11 德昌电机(深圳)有限公司 排水泵
BR112012022324B1 (pt) 2010-03-05 2020-12-22 Weir Minerals Australia Ltd dispositivo de admissão de bomba de pasta, membro de desgaste para um dispositivo de admissão de bomba de pasta, conjunto de revestimento de bomba de pasta, método para substituir um membro de desgaste de um dispositivo de admissão de bomba de pasta e aparelho de bomba de pasta
US9033685B1 (en) * 2010-04-26 2015-05-19 Rex N. Await Well pump flow sleeve installation assembly and method
DE102010053510B4 (de) * 2010-12-04 2014-01-23 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Kühlmittelpumpe
DE102011109535B4 (de) * 2011-08-05 2013-08-08 Sew-Eurodrive Gmbh & Co. Kg Lüfteranordnung und Motor
US9303647B2 (en) 2011-08-15 2016-04-05 Dale A. Conway Centrifugal pump anti-air locking system
JP6078303B2 (ja) * 2012-11-13 2017-02-08 三菱重工業株式会社 遠心式流体機械
WO2014116842A1 (en) 2013-01-23 2014-07-31 Concepts Eti, Inc. Structures and methods for forcing coupling of flow fields of adjacent bladed elements of turbomachines, and turbomachines incorporating the same
CN106574636B (zh) 2014-06-24 2021-08-24 概创机械设计有限责任公司 用于涡轮机的流动控制结构及其设计方法
DE102014222877A1 (de) * 2014-11-10 2016-05-12 Siemens Aktiengesellschaft Laufrad einer Radialturbofluidenergiemaschine, Stufe
JP6806551B2 (ja) * 2016-12-14 2021-01-06 株式会社豊田中央研究所 遠心圧縮機、ターボチャージャ
CN110081026B (zh) * 2019-05-16 2020-05-22 西安交通大学 一种用于减弱离心压缩机叶顶泄漏流的进口导叶及调节方法
EP4193035A1 (en) 2020-08-07 2023-06-14 Concepts NREC, LLC Flow control structures for enhanced performance and turbomachines incorporating the same

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1716008A (en) * 1924-09-12 1929-06-04 Westinghouse Electric & Mfg Co Guide-vane construction for pumps and blowers
DE471149C (de) * 1925-12-24 1929-02-12 Gill Propeller Company Ltd Hydraulische Maschine mit axialem Durchfluss
DE649668C (de) * 1930-02-04 1937-09-04 James Herbert Wainwright Gill Laeufer fuer hydraulische Maschinen
US2083185A (en) * 1936-03-23 1937-06-08 American Blower Corp Fan
GB719061A (en) * 1950-06-21 1954-11-24 United Aircraft Corp Blade arrangement for improving the performance of a gas turbine plant
US2834536A (en) * 1955-09-29 1958-05-13 Westinghouse Electric Corp Spin vane controls for fans
US4147465A (en) * 1972-09-02 1979-04-03 Klein, Schanzlin & Becker Aktiengesellschaft Means for abruptly terminating the flow of fluid in closed fluid circuit systems of nuclear reactor plants or the like
JPS5896197A (ja) * 1981-12-02 1983-06-08 Nissan Motor Co Ltd 遠心圧縮機の空気取入口
JPS5929799A (ja) * 1982-08-12 1984-02-17 Matsushita Electric Ind Co Ltd 送風機
JPS59128998A (ja) * 1983-01-12 1984-07-25 Matsushita Electric Ind Co Ltd 電動送風機
FI843263A (fi) * 1984-08-17 1986-02-18 Nokia Oy Ab Centrifugalflaekt samt instaellningsvinggrupp och instaellningsvingserie foer dylika flaektar.
US4884942A (en) * 1986-06-30 1989-12-05 Atlas Copco Aktiebolag Thrust monitoring and balancing apparatus
US4764088A (en) * 1987-04-21 1988-08-16 Kapich Davorin D Inlet guide vane assembly
US4854818A (en) * 1987-12-28 1989-08-08 Rockwell International Corporation Shrouded inducer pump
JPH07117076B2 (ja) * 1989-05-26 1995-12-18 太平洋機工株式会社 ウオータジェット推進機のためのターボ型ポンプ用羽根車およびこの羽根車を有するターボ型ポンプ
DE4321260C1 (de) * 1993-06-25 1995-03-09 Westphal Dieter Dipl Ing Dipl Blutpumpe als Zentrifugalpumpe
US6375419B1 (en) * 1995-06-02 2002-04-23 United Technologies Corporation Flow directing element for a turbine engine

Also Published As

Publication number Publication date
JP3802572B2 (ja) 2006-07-26
US6273677B1 (en) 2001-08-14
WO1998054471A1 (de) 1998-12-03
DE19722353A1 (de) 1998-12-03
JP2001526757A (ja) 2001-12-18
EP0985098A1 (de) 2000-03-15
ES2196563T3 (es) 2003-12-16
DE59808172D1 (de) 2003-06-05

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