EP0623752B1 - Kreiselpumpenlaufrad - Google Patents
Kreiselpumpenlaufrad Download PDFInfo
- 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
Links
Images
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)
Description
- Fig. 1
- einen Schnitt durch ein Kreiselpumpengehäuse, die
- Fig. 2
- die Abwicklung einer im Bereich ihrer mittleren Schaufelfläche geschnittenen und mit Materialanhäufungen versehene Schaufel, die
- Fig. 3 und 4
- Schnitte durch die Abwicklung gemäß Fig. 2, die
- Fig. 5
- eine Abwicklung einer im Bereich ihrer mittleren Schaufelfläche geschnittenen Schaufel, wobei ein Materialabtrag im Übergang zwischen Deckscheibe und Schaufel erfolgt.
Claims (5)
- Kreiselpumpenlaufrad geschlossener Bauart mit zwischen Deckscheiben angeordneten Schaufeln, zur Förderung feststoffhaltiger Flüssigkeiten, wobei zwischen den Schaufeln und Deckscheiben Übergangsradien angeordnet sind, und die Schaufeln am Schaufelanfang ohne Verdickung der Schaufelanströmkanten ausgeführt sind, dadurch gekennzeichnet, daß an den Schaufeln (3) in Verlängerung der mittleren Schaufelfläche (11) über die Schaufelanströmkanten (6) hinaus die Übergänge zwischen den Schaufeln (3) und den Laufraddeckscheiben (4, 5) vorgezogen sind, derart, daß ein flacher Anstieg von den Laufraddeckscheiben (4, 5) zu den Schaufelanfängen (6) erfolgt und daß die Übergänge von den Laufraddeckscheiben (4, 5) zu den vorgezogenen Schaufelanfängen (6) als Bögen oder Geraden mit Anfangssteigungen von 0° bis maximal 30° erfolgen.
- Kreiselpumpenlaufrad nach Anspruch 1, dadurch gekennzeichnet, daß der bogenförmige Übergang in die Schaufelanfänge (6) einen Radius (R) aufweist, der gleich oder größer als das 2,5fache der anfänglichen Schaufelstärke (D) der Schaufeln (3) ist.
- Kreiselpumpenlaufrad nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sich der Querschnitt zwischen den Deckscheiben (4, 5) des Laufrades (2) zu den Schaufelanfängen (6) hin düsenförmig verengt.
- Kreiselpumpenlaufrad nach Anspruch 3, dadurch gekennzeichnet, daß die Tiefe eines Materialabtrages (12) an den Laufraddeckscheiben (4, 5) mindestens zweimal größer als die anfängliche Schaufelstärke (D) der Schaufeln (3) ist.
- Verfahren zur Herstellung eines Kreiselpumpenlaufrades geschlossener Bauart mit zwischen Deckscheiben angeordneten Schaufeln, zur Förderung feststoffhaltiger Flüssigkeiten, wobei zwischen den Schaufeln und Deckscheiben Übergangsradien angeordnet sind, dadurch gekennzeichnet, daß durch materialanhäufende (8, 9) und/oder materialabtragende (12) Maßnahmen in Verlängerung der mittleren Schaufelflächen (11) über die Schaufelanströmkanten (6) hinaus Übergänge zwischen den Schaufeln (3) und den Laufraddeckscheiben (4, 5) gebildet werden, derart, daß von den Laufraddeckscheiben (4, 5) zu den Schaufelanfängen (6) ein flacher Anstieg erfolgt und daß die Übergänge der vorgezogenen Schaufelanfänge (6) von den Laufraddeckscheiben (4, 5) zu den Schaufeln (3) als Bögen oder Geraden mit Steigungen von 0° bis maximal 30° ausgebildet sind.
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 (de) | 1994-11-09 |
EP0623752B1 true EP0623752B1 (de) | 1998-09-09 |
Family
ID=6485168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94104842A Expired - Lifetime EP0623752B1 (de) | 1993-04-08 | 1994-03-28 | Kreiselpumpenlaufrad |
Country Status (3)
Country | Link |
---|---|
US (1) | US5478200A (de) |
EP (1) | EP0623752B1 (de) |
DE (2) | DE4311746A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3115613B1 (de) | 2015-07-06 | 2022-01-26 | Zhejiang Sanhua Automotive Components Co., Ltd. | Elektrisch angetriebene pumpe |
Families Citing this family (16)
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 |
US8398361B2 (en) | 2008-09-10 | 2013-03-19 | Pentair Pump Group, Inc. | High-efficiency, multi-stage centrifugal pump and method of assembly |
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 |
ES2702096T3 (es) * | 2009-10-08 | 2019-02-27 | Sulzer Management Ag | Impulsor de bomba |
US8998582B2 (en) | 2010-11-15 | 2015-04-07 | Sundyne, Llc | Flow vector control for high speed centrifugal pumps |
US9926942B2 (en) | 2015-10-27 | 2018-03-27 | Pratt & Whitney Canada Corp. | Diffuser pipe with vortex generators |
US10570925B2 (en) | 2015-10-27 | 2020-02-25 | Pratt & Whitney Canada Corp. | Diffuser pipe with splitter vane |
EP3440360B1 (de) * | 2016-04-06 | 2023-08-30 | FLSmidth A/S | Wirbelrad mit niedrigem einlass und verbesserten hydrodynamischen verschleisseigenschaften |
WO2018049435A1 (en) * | 2016-09-08 | 2018-03-15 | Mechanical Engineering Transcendent Technology (Pty) Ltd | Impeller primary vane profile |
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 |
WO2022067385A1 (en) * | 2020-09-30 | 2022-04-07 | Weir Slurry Group, Inc. | Centrifugal slurry pump impeller |
Family Cites Families (13)
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 |
-
1993
- 1993-04-08 DE DE4311746A patent/DE4311746A1/de not_active Withdrawn
-
1994
- 1994-03-28 DE DE59406861T patent/DE59406861D1/de not_active Expired - Lifetime
- 1994-03-28 EP EP94104842A patent/EP0623752B1/de not_active Expired - Lifetime
- 1994-04-06 US US08/224,640 patent/US5478200A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3115613B1 (de) | 2015-07-06 | 2022-01-26 | Zhejiang Sanhua Automotive Components Co., Ltd. | Elektrisch angetriebene pumpe |
Also Published As
Publication number | Publication date |
---|---|
US5478200A (en) | 1995-12-26 |
DE59406861D1 (de) | 1998-10-15 |
EP0623752A1 (de) | 1994-11-09 |
DE4311746A1 (de) | 1994-10-13 |
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