EP0623752B1 - Rouet de pompe centrifuge - Google Patents

Rouet de pompe centrifuge Download PDF

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Publication number
EP0623752B1
EP0623752B1 EP94104842A EP94104842A EP0623752B1 EP 0623752 B1 EP0623752 B1 EP 0623752B1 EP 94104842 A EP94104842 A EP 94104842A EP 94104842 A EP94104842 A EP 94104842A EP 0623752 B1 EP0623752 B1 EP 0623752B1
Authority
EP
European Patent Office
Prior art keywords
blades
impeller
blade
shroud plates
centrifugal 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
EP94104842A
Other languages
German (de)
English (en)
Other versions
EP0623752A1 (fr
Inventor
Sönke Dr. Brodersen
Peter Hergt
Wolfgang Metzinger
Paul Krieger
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 EP0623752A1 publication Critical patent/EP0623752A1/fr
Application granted granted Critical
Publication of EP0623752B1 publication Critical patent/EP0623752B1/fr
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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • F04D29/242—Geometry, shape
    • 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
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2294—Rotors specially for centrifugal pumps with special measures for protection, e.g. against abrasion
    • 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
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/303—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the leading edge of a rotor blade

Definitions

  • the invention relates to a centrifugal pump impeller closed Design with blades arranged between cover disks, for Pumping liquids containing solids, and a process for the production of such a centrifugal pump impeller.
  • the invention addresses the problem for which to promote centrifugal pump impellers used by liquids in which hydroabrasive wear is to be expected, one that The service life of the pump is a decisive measure develop.
  • the configurations described in claims 2 to 4 give the orders of magnitude of the transitions or material removals on.
  • the blade thickness is the initial blade thickness understand that at the beginning of the blade according to the rounding radius is measurable between the blade suction and pressure side. Practical Experiments have shown that when these values are switched on an emergence of the cover plates and the beginning of the blade harmful vertebrae can be prevented.
  • a method of manufacturing a centrifugal pump impeller closed design with arranged between cover plates Scoops, for conveying liquids containing solids, whereby transition radii between the blades and cover plates are arranged, provides claim 5. Then be through material-accumulating (8, 9) and / or material-removing (12) Measures to extend the middle blade surfaces (11) transitions between the blade leading edges (6) the blades (3) and the impeller cover disks (4, 5) are formed, such that from the impeller cover plates (4, 5) to the Shovel starts (6) a flat rise and that the Transitions of the advanced blade tips (6) from the Impeller cover disks (4, 5) to the blades (3) as arches or Straight lines with slopes of 0 ° to a maximum of 30 ° are formed.
  • the centrifugal pump shown in Fig. 1 for delivery solid media is a single-stage design.
  • an impeller 2 is shown, the im Meridian section shown, projected into the section plane Blades 3 between the impeller cover disk 4 on the suction side and the pressure-side impeller cover plate 5 are arranged.
  • the latter is also known under the term support disc.
  • the Blade starts 6 extend between the two Cover plates.
  • the inlet cross-section of the impeller is through the impeller end face 2.1 limited.
  • Fig. 2 shows a flat development of a blade, the Cut through the middle blade surface.
  • this middle blade area over the Bucket beginnings 6 - or in the two-dimensional here Expressed differently - via the linear Blade leading edge 6 are material accumulations 8, 9 preceded by blade 3.
  • the radius of this arc is equal to or greater than 2.5 times the initial blade thickness D.
  • the initial Blade thickness D is mostly constant, but can in the initial area, which in Fig. 3 and 4 as a circular arc is shown for other contours, such as Ellipses, first climb over a short path.
  • Essential for the transition radius R shown in Fig. 2 from the Impeller cover plate at the beginning of blade 6 is the most Measurable blade thickness at the beginning of the blade; 3 and 4 so the Diameter of the semicircle at the character I. This applies if the Blade surfaces are arranged perpendicular to the cover plates. Are the blade surfaces to the cover plates at an angle arranged inclined, then that blade thickness D authoritative, the one to the impeller cover disc surface parallel cut results. With opposite Impeller cover plates with increasing inclination of the blades the flat rise also increases Radius R.
  • FIG. 3 is a plan view of the line I-I to IV-IV cut blade 3 of Fig. 2 shown.
  • a shovel in the area of Blade channels a small transition radius between the blade and cover plate.
  • the in this illustration with the Characters I to IV marked lines are in their function with Contour lines comparable.
  • the dash-dotted line 11 corresponds to the plane of the middle blade surface, the Blade thickness of blade tips 6 was measured with D featured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (5)

  1. Rouet de pompe centrifuge du type fermé, comprenant des aubes disposées entre des disques de recouvrement, pour le refoulement de fluides contenant des matières solides, des rayons de transition étant disposés entre les aubes et les disques de recouvrement, et les aubes étant réalisées à l'entrée des aubes sans épaississement des arêtes d'attaque des aubes, caractérisé en ce qu'au niveau des aubes (3) dans le prolongement de la surface médiane (11) des aubes au-delà des arêtes d'attaque (6) des aubes, les transitions entre les aubes (3) et les disques de recouvrement du rouet (4, 5) sont avancées, de telle sorte que l'on ait une pente plane depuis les disques de recouvrement du rouet (4, 5) jusqu'aux entrées (6) des aubes, et que les transitions depuis les disques de recouvrement (4, 5) du rouet jusqu'aux entrées (6) avancées des aubes soient en forme d'arcs ou de droites avec des pentes initiales de 0° jusqu'à 30° au maximum.
  2. Rouet de pompe centrifuge selon la revendication 1, caractérisé en ce que la transition en forme d'arc dans les entrées (6) des aubes présente un rayon (R), qui est égal ou supérieur à deux fois et demie l'épaisseur (D) des aubes à l'entrée des aubes (3).
  3. Rouet de pompe centrifuge selon la revendication 1 ou 2, caractérisé en ce que la section transversale entre les disques de recouvrement (4, 5) du rouet (2) se rétrécit en forme de buse vers les entrées (6) des aubes.
  4. Rouet de pompe centrifuge selon la revendication 3, caractérisé en ce que la profondeur d'un dépôt de matière (12) sur les disques de recouvrement (4 ,5) du rouet est au moins deux fois plus grande que l'épaisseur (D) des aubes à l'entrée des aubes (3).
  5. Procédé de fabrication d'un rouet de pompe centrifuge du type fermé, comprenant des aubes disposées entre des disques de recouvrement, pour le refoulement de fluides contenant des matières solides, des rayons de transition étant disposés entre les aubes et les disques de recouvrement, caractérisé en ce que, par des mesures d'accumulation de matière (8, 9) et/ou d'enlèvement de matière (12) dans le prolongement des surfaces médianes (11) des aubes au-delà des arêtes d'attaque (6) des aubes, des transitions sont formées entre les aubes (3) et les disques de recouvrement (4, 5) du rouet, de telle sorte que l'on ait une pente plane depuis les disques de recouvrement du rouet (4, 5) jusqu'aux entrées (6) des aubes, et que les transitions des entrées (6) avancées des aubes depuis les disques de recouvrement (4, 5) du rouet jusqu'aux aubes (3) soient en forme d'arcs ou de droites avec des pentes de 0° jusqu'à 30° au maximum.
EP94104842A 1993-04-08 1994-03-28 Rouet de pompe centrifuge Expired - Lifetime EP0623752B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4311746A DE4311746A1 (de) 1993-04-08 1993-04-08 Kreiselpumpenlaufrad
DE4311746 1993-04-08

Publications (2)

Publication Number Publication Date
EP0623752A1 EP0623752A1 (fr) 1994-11-09
EP0623752B1 true EP0623752B1 (fr) 1998-09-09

Family

ID=6485168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94104842A Expired - Lifetime EP0623752B1 (fr) 1993-04-08 1994-03-28 Rouet de pompe centrifuge

Country Status (3)

Country Link
US (1) US5478200A (fr)
EP (1) EP0623752B1 (fr)
DE (2) DE4311746A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3115613B1 (fr) 2015-07-06 2022-01-26 Zhejiang Sanhua Automotive Components Co., Ltd. Pompe à entraînement électrique

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0988887A (ja) * 1995-09-20 1997-03-31 Unisia Jecs Corp ウォータポンプ
US6435829B1 (en) 2000-02-03 2002-08-20 The Boeing Company High suction performance and low cost inducer design blade geometry
US6589015B1 (en) * 2002-05-08 2003-07-08 Pratt & Whitney Canada Corp. Discrete passage diffuser
JP4663259B2 (ja) * 2004-06-18 2011-04-06 日立アプライアンス株式会社 送風機及び電気掃除機
MX2011002665A (es) 2008-09-10 2011-07-28 Pentair Pump Group Inc Bomba centrifuga de multiples etapas, de alta eficiencia y metodo para ensamblado.
US8235648B2 (en) 2008-09-26 2012-08-07 Pratt & Whitney Canada Corp. Diffuser with enhanced surge margin
JP5164932B2 (ja) * 2009-06-11 2013-03-21 三菱電機株式会社 ターボファンおよび空気調和機
WO2011042515A1 (fr) * 2009-10-08 2011-04-14 Cardo Production Wexford Limited Roue à aubes de pompe
US8998582B2 (en) 2010-11-15 2015-04-07 Sundyne, Llc Flow vector control for high speed centrifugal pumps
US10570925B2 (en) 2015-10-27 2020-02-25 Pratt & Whitney Canada Corp. Diffuser pipe with splitter vane
US9926942B2 (en) 2015-10-27 2018-03-27 Pratt & Whitney Canada Corp. Diffuser pipe with vortex generators
FI3440360T3 (fi) * 2016-04-06 2023-09-26 Smidth As F L Alhaisen tulopyörrevoimakkuuden juoksupyörä, jolla on parannellut hydrodynaamiset kulumisominaisuudet
WO2018049435A1 (fr) * 2016-09-08 2018-03-15 Mechanical Engineering Transcendent Technology (Pty) Ltd Profil d'aube primaire de turbine
US10823197B2 (en) 2016-12-20 2020-11-03 Pratt & Whitney Canada Corp. Vane diffuser and method for controlling a compressor having same
NL2018044B1 (en) * 2016-12-22 2018-06-29 Ihc Holland Ie Bv Impeller with rotor blades for centrifugal pump
EP4204688A4 (fr) * 2020-09-30 2024-02-21 Weir Slurry Group Inc Roue de pompe à boue centrifuge

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US1246253A (en) * 1916-10-31 1917-11-13 Alexander T Fraser Pump.
US1947658A (en) * 1931-12-17 1934-02-20 Pizzuto Nicolas Impeller and shaft therefor for use in centrifugal and turbine pumps
US1946273A (en) * 1932-02-08 1934-02-06 American Manganese Steel Co Rotary pump impeller
US2625884A (en) * 1949-02-23 1953-01-20 William H Welsh Impeller
CH294450A (de) * 1952-12-10 1953-11-15 Schweizer Becker Werner Zentrifugalpumpe, insbesondere für dickflüssige Medien.
US3130678A (en) * 1961-04-28 1964-04-28 William F Chenault Centrifugal pump
US3260443A (en) * 1964-01-13 1966-07-12 R W Kimbell Blower
US3272429A (en) * 1964-10-16 1966-09-13 Westinghouse Electric Corp Rotors of centrifugal fans
DE2532791A1 (de) * 1975-07-22 1977-02-10 Dessair Jean Paul Vertikal- oder horizontaltraeger fuer die herstellung und einrichtung von bueroraeumen sowie haupt- und hilfsprofile zum zusammenbau eines solchen traegers
SU1101590A1 (ru) * 1983-02-17 1984-07-07 Специальное Конструкторско-Технологическое Бюро Герметичных И Скважинных Насосов Рабочее колесо центробежного насоса
DD253279A1 (de) * 1986-10-09 1988-01-13 Pumpen & Verdichter Veb K Pumpenlaufrad fuer die foerderung von fluessigkeits-feststoff-gemischen
DE3704360A1 (de) * 1987-02-12 1988-08-25 Klein Schanzlin & Becker Ag Kreiselpumpe zur foerderung von feststoffhaltigen fluessigkeiten
US5192193A (en) * 1991-06-21 1993-03-09 Ingersoll-Dresser Pump Company Impeller for centrifugal pumps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3115613B1 (fr) 2015-07-06 2022-01-26 Zhejiang Sanhua Automotive Components Co., Ltd. Pompe à entraînement électrique

Also Published As

Publication number Publication date
EP0623752A1 (fr) 1994-11-09
DE59406861D1 (de) 1998-10-15
DE4311746A1 (de) 1994-10-13
US5478200A (en) 1995-12-26

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