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EP2112380A1 - Pompe centrifuge en plusieurs étages en construction en ligne - Google Patents

Pompe centrifuge en plusieurs étages en construction en ligne Download PDF

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Publication number
EP2112380A1
EP2112380A1 EP08007716A EP08007716A EP2112380A1 EP 2112380 A1 EP2112380 A1 EP 2112380A1 EP 08007716 A EP08007716 A EP 08007716A EP 08007716 A EP08007716 A EP 08007716A EP 2112380 A1 EP2112380 A1 EP 2112380A1
Authority
EP
European Patent Office
Prior art keywords
centrifugal pump
flow
guide element
pump according
annular space
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.)
Withdrawn
Application number
EP08007716A
Other languages
German (de)
English (en)
Inventor
Wil Ouwehand
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.)
DP Industries BV
Original Assignee
DP Industries BV
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 DP Industries BV filed Critical DP Industries BV
Priority to EP08007716A priority Critical patent/EP2112380A1/fr
Priority to US12/386,385 priority patent/US20090274555A1/en
Priority to AU2009201570A priority patent/AU2009201570A1/en
Priority to CNA2009101352365A priority patent/CN101566161A/zh
Publication of EP2112380A1 publication Critical patent/EP2112380A1/fr
Withdrawn legal-status Critical Current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
    • F04D29/426—Casings; Connections of working fluid for 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

Definitions

  • the invention relates to a centrifugal pump of the inline type, comprising a connection housing with connection piece in the form of suction and discharge nozzle, a pump body, wherein the pump body is surrounded to form a flow-leading annular space at a distance from a jacket tube, pump body and casing pipe between the connection housing and a head piece are mounted force transmitting, the head piece is provided with a passage for a motor-driven pump shaft and the connector is provided with a suction and pressure area dividing partition.
  • centrifugal pump is through the DE 36 29 123 A1 known.
  • a pump body equipped with several pump stages, wherein impellers arranged therein are driven by a shaft from a motor arranged above a head piece.
  • a pumped medium flows through the pump body in the direction of the head piece in order to be diverted radially outwardly into an annular gap and after it leaves the pump body.
  • a perforated support ring centers the pump body in the head piece.
  • the annular gap forms a jacket tube, which surrounds the pump body at a distance. In the annular gap, the fluid flows back to the connector, is diverted therein and exits through a second connection from the connector body.
  • Such fittings are designed as a cast or multi-part welded construction and have a partition, with the help of a subdivision into Suction and pressure area takes place.
  • the head pieces are known as cast or multipart weldments.
  • the cohesion of the centrifugal pump usually require several tie rods, which are attached to the connector and the head piece and clamp between the pump body and the jacket tube.
  • the invention has for its object to improve the efficiency of such a centrifugal pump.
  • the first solution to this problem provides that a flow-deflecting guide element is arranged in the transition region between the annular space and a connecting piece.
  • the guide element is a directed flow deflection from the annular channel in a connection piece.
  • This solution improves in the fitting the entire flow guide in this complex deflection and merge zone. Because in the fitting the uniformed annular channel flow is deflected under very tight spatial conditions and merged in the connecting piece cross-section, usually the outlet or discharge nozzle to a full-area flow cross-section.
  • the guide element is a partial flow of the annular space flow, preferably that which is closest to the connecting piece, flow-deflected in the direction of an outlet flow.
  • Embodiments of the invention provide that the guide element between the annulus and the discharge nozzle is arranged, that the guide element is formed as part of the partition wall, or that the guide element is connected to one or more rib-like elements with the partition wall and / or with a wall surface of the connecting piece, or that the guide element is arranged and / or connected as an insert part between connection piece, pump body and / or jacket tube.
  • the appropriate mounting option for the guide can be selected.
  • the guide element is spatially curved and in a projection on the flow plane has a trapezoidal or triangular contour, or that the guide element is designed tongue-shaped, or that the guide element with its free end up to or into the connecting piece cross-section protrudes, or that the guide element is fixed with one end in the transition between the partition and Annraum- inner wall surface.
  • a second solution of the problem provides that a flow-guiding ring element with a convexly designed flow-guiding surface bridges the space between an outflow opening of the pump body and an inner diameter at the annular gap inlet cross section.
  • an embodiment provides that an annular gap nozzle is formed between the flow-guiding head piece surface and the ring element.
  • an additional influencing of the flow is possible, which emerges from the last stage of the pump body and is deflected with little loss into the inlet cross-section of the annular gap.
  • the flow-guiding surface opposite the ring element in the head piece has a concave configuration.
  • the ring element is connected to one or more guide elements with the head piece.
  • the guide elements extend in the direction of the pump shaft and extend in the direction of the flow to be deflected. Thus, they provide the flow only a minimal resistance.
  • the head piece can be formed one or more parts and made of a variety of materials. This depends on a selected manufacturing process.
  • connection pieces 2, 3 in the form of suction and discharge nozzles. Arrows show the flow direction within the connection housing. 1
  • the connecting pieces 2, 3 provide the main flow direction of the centrifugal pump and perpendicular to a pump body 4 is arranged, which is surrounded to form a flow-guiding annular space 5 at a distance from a jacket tube 6.
  • a mounted above the pump body 4 head piece 7 serves to receive a drive motor. Passed through the head piece 7 is a pump shaft 8 with the aid of which the individual impellers are driven within the multistage pump body 4.
  • a partition wall 9 Within the connecting piece 1 is a partition wall 9, with the aid of the connector 1 is divided into a Saugund pressure range.
  • a guide element 10 is integrated and formed as part of the partition wall 9.
  • the guide element can also be integrated into another component or connected thereto as a separate component.
  • a funded from the pump part 4 liquid flow is deflected in the head piece 7 and flows through the annular gap 5 formed by the jacket tube 5 back to the connector 1. Since the flow direction in the annular gap is perpendicular to the inflow and outflow of the pump, takes place in the connecting piece 1 along the partition. 9 a flow deflection in the direction of the connecting piece 3.
  • the flow is deflected from the adjacent to the connecting piece 3 annulus area 5.1 from the guide element 10 in a streamlined manner loss-making and directed to the outlet cross-section of the connecting piece 3.
  • the guide element 10 thus prevents in the annulus 5.1 completely or partially intersecting currents.
  • connection housing 1 shielded from the flow in the connection housing 1, whereby a substantial improvement in efficiency within the centrifugal pump is conditional.
  • Terminal housing 1 shielded, whereby a substantial improvement in efficiency within the centrifugal pump is conditional.
  • the Fig. 2 shows a plan view of the connector 1 in half section.
  • the upper half of the Fig. 2 gives the view free on the connection level for the pump part 4.
  • the guide element 10 recognizable with the aid of the annulus 5 with the aid of the guide element 10 is a flow deflection from the vertical downward and in the horizontal direction to the connection piece 3.
  • the guide element 10 is drawn in the annular gap area 5.1 as a visible edge and continues as a dashed line in the connecting piece 3. From the projection onto the direction of flow marked by the arrows, it can be seen that the guide element 10 is configured in the form of a tongue in this exemplary embodiment.
  • the guide element 10 can be formed by means of rib-like elements on the partition wall 9 and / or on a flow-deflecting wall surface 11 (cf. Fig. 1 ) of the connecting piece 3.
  • the lower half of the Fig. 2 corresponds to a section through the center line of the connecting pieces 2, 3.
  • the partition wall 9 is liquid-tightly connected to the connecting piece 2 and causes the deflection of a flowing into the connector 1 fluid in the standing perpendicular to the center line pump part. 4
  • Fig. 3 is a section of Fig. 1
  • the end of the pump body 4 is covered by a flow-guiding ring element 12, which between an outflow opening 13 of the pump body 4 and an inner diameter in the region of the annular gap inlet cross section 14th bridged.
  • Arrows indicate the direction of flow within the head piece 7.
  • a flow-guiding head piece surface 15 forms a kind of annular gap nozzle with the ring element 12 for the flow to be deflected.
  • the ring element 12 is connected to one or more guide elements 16 with the head piece 7. With the help of the guide elements 16, which are designed as a kind of ribs or as flow ribs, an additional influence on the flow to be deflected can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP08007716A 2008-04-21 2008-04-21 Pompe centrifuge en plusieurs étages en construction en ligne Withdrawn EP2112380A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP08007716A EP2112380A1 (fr) 2008-04-21 2008-04-21 Pompe centrifuge en plusieurs étages en construction en ligne
US12/386,385 US20090274555A1 (en) 2008-04-21 2009-04-17 Multiple-stage centrifugal pump of inline design
AU2009201570A AU2009201570A1 (en) 2008-04-21 2009-04-21 Multiple-stage centrifugal pump of inline design
CNA2009101352365A CN101566161A (zh) 2008-04-21 2009-04-21 直列式设计的多级离心泵

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08007716A EP2112380A1 (fr) 2008-04-21 2008-04-21 Pompe centrifuge en plusieurs étages en construction en ligne

Publications (1)

Publication Number Publication Date
EP2112380A1 true EP2112380A1 (fr) 2009-10-28

Family

ID=39735226

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08007716A Withdrawn EP2112380A1 (fr) 2008-04-21 2008-04-21 Pompe centrifuge en plusieurs étages en construction en ligne

Country Status (4)

Country Link
US (1) US20090274555A1 (fr)
EP (1) EP2112380A1 (fr)
CN (1) CN101566161A (fr)
AU (1) AU2009201570A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011116904A1 (de) * 2011-10-25 2013-04-25 Wilo Se Mehrstufige Kreiselpumpe
WO2014206638A1 (fr) * 2013-06-24 2014-12-31 Grundfos Holding A/S Pompe centrifuge
EP2818722A1 (fr) * 2013-06-24 2014-12-31 Grundfos Holding A/S Pompe centrifuge
CN115076742A (zh) * 2021-03-15 2022-09-20 芜湖美的厨卫电器制造有限公司 吸油烟机

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101086846B1 (ko) 2010-01-07 2011-11-24 펌프텍코리아(주) 침전물 제거용 수중펌프
SE534906C2 (sv) * 2010-06-09 2012-02-14 Itt Mfg Enterprises Inc Suganslutning för förbindning av en sugledning till en torrt uppställd centrifugalpump
WO2017030382A1 (fr) * 2015-08-18 2017-02-23 한온시스템 주식회사 Dispositif de chauffage de véhicule, et pompe de circulation d'eau de refroidissement située à l'intérieur de ce dernier
EP3176441B1 (fr) * 2015-12-02 2021-09-15 Grundfos Holding A/S Pompe à plusieurs étages
USD946629S1 (en) 2020-11-24 2022-03-22 Aquastar Pool Products, Inc. Centrifugal pump
USD986289S1 (en) 2020-11-24 2023-05-16 Aquastar Pool Products, Inc. Centrifugal pump
US11193504B1 (en) 2020-11-24 2021-12-07 Aquastar Pool Products, Inc. Centrifugal pump having a housing and a volute casing wherein the volute casing has a tear-drop shaped inner wall defined by a circular body region and a converging apex with the inner wall comprising a blocker below at least one perimeter end of one diffuser blade

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9310091U1 (de) 1993-07-07 1993-09-23 J. Hartlage GmbH & Co. KG, 49090 Osnabrück Vertikale kreiselpumpe
EP0664398A1 (fr) 1994-01-21 1995-07-26 WILO GmbH Pompe centrifuge avec clapet de non-retour
DE29817337U1 (de) * 1998-09-26 1998-12-17 Grundfos A/S, Bjerringbro Kreiselpumpe der Inline-Bauart zum Fördern heißer Flüssigkeiten
EP0907029A2 (fr) * 1997-10-04 1999-04-07 Grundfos A/S Ensemble de pompe centrifuge
EP1170509A2 (fr) * 2000-07-06 2002-01-09 Grundfos A/S Connexion d'aspiration ou de refoulement d'une pompe centrifuge
WO2006008843A1 (fr) 2004-07-16 2006-01-26 Ebara Corporation Pompe centrifuge

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244675A (en) * 1979-04-30 1981-01-13 Worthington Pump, Inc. Multi-stage barrel type centrifugal pump with resilient compensator means for maintaining the seals between interstage pumping assemblies
FR2661218B1 (fr) * 1990-04-24 1992-07-31 Salmson Pompes Ensemble de pompe centrifuge verticale.
US5180280A (en) * 1990-05-28 1993-01-19 Toshiharu Honda Centrifugal pump
JP3986317B2 (ja) * 2002-01-21 2007-10-03 株式会社荏原製作所 多段ポンプ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9310091U1 (de) 1993-07-07 1993-09-23 J. Hartlage GmbH & Co. KG, 49090 Osnabrück Vertikale kreiselpumpe
EP0664398A1 (fr) 1994-01-21 1995-07-26 WILO GmbH Pompe centrifuge avec clapet de non-retour
EP0907029A2 (fr) * 1997-10-04 1999-04-07 Grundfos A/S Ensemble de pompe centrifuge
DE29817337U1 (de) * 1998-09-26 1998-12-17 Grundfos A/S, Bjerringbro Kreiselpumpe der Inline-Bauart zum Fördern heißer Flüssigkeiten
EP1170509A2 (fr) * 2000-07-06 2002-01-09 Grundfos A/S Connexion d'aspiration ou de refoulement d'une pompe centrifuge
WO2006008843A1 (fr) 2004-07-16 2006-01-26 Ebara Corporation Pompe centrifuge

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011116904A1 (de) * 2011-10-25 2013-04-25 Wilo Se Mehrstufige Kreiselpumpe
WO2014206638A1 (fr) * 2013-06-24 2014-12-31 Grundfos Holding A/S Pompe centrifuge
EP2818722A1 (fr) * 2013-06-24 2014-12-31 Grundfos Holding A/S Pompe centrifuge
EP2818721A1 (fr) * 2013-06-24 2014-12-31 Grundfos Holding A/S Pompe centrifuge
WO2014206637A1 (fr) * 2013-06-24 2014-12-31 Grundfos Holding A/S Pompe centrifuge
CN105339667A (zh) * 2013-06-24 2016-02-17 格兰富控股联合股份公司 离心泵
CN105339667B (zh) * 2013-06-24 2018-09-14 格兰富控股联合股份公司 离心泵
US10082155B2 (en) 2013-06-24 2018-09-25 Grundfos Holding A/S Centrifugal pump
US10502214B2 (en) 2013-06-24 2019-12-10 Grundfos Holding A/S Centrifugal pump
CN115076742A (zh) * 2021-03-15 2022-09-20 芜湖美的厨卫电器制造有限公司 吸油烟机

Also Published As

Publication number Publication date
AU2009201570A1 (en) 2009-11-05
US20090274555A1 (en) 2009-11-05
CN101566161A (zh) 2009-10-28

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