EP1903216A1 - Zentrifugalpumpe und deren Anwendung - Google Patents
Zentrifugalpumpe und deren Anwendung Download PDFInfo
- Publication number
- EP1903216A1 EP1903216A1 EP06120843A EP06120843A EP1903216A1 EP 1903216 A1 EP1903216 A1 EP 1903216A1 EP 06120843 A EP06120843 A EP 06120843A EP 06120843 A EP06120843 A EP 06120843A EP 1903216 A1 EP1903216 A1 EP 1903216A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- diameter
- rotor
- suction
- ratio
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 5
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 239000011435 rock Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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
- F04D29/2205—Conventional flow pattern
- F04D29/2216—Shape, geometry
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
- F04D7/045—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous with means for comminuting, mixing stirring or otherwise treating
Definitions
- the invention relates to a centrifugal pump, in particular for the pumping of a mixture of substances possibly including stones and/or pebbles, comprising:
- a centrifugal pump of this type is known.
- the rotor rotates about the axial rotation axis.
- the mass to be pumped is forced radially outward into the pump housing under the influence of centrifugal forces.
- Said mass is then entrained in the circumferential direction of the pump housing toward the tangential outlet spout of the pump housing.
- the junction between the inner wall of the tangential outlet and the inside of the circumferential wall of the housing defines what is known as a cutwater.
- the pumped mass which, after leaving the rotor, is entrained in the circumferential direction of the housing flows largely out of the tangential outlet of the housing.
- a small amount of the entrained mass recirculates, i.e. flows along the cutwater back into the pump housing.
- Said centrifugal pump can be used in dredging operations. If the centrifugal pump is located on board a dredging ship, such as a cutter suction dredger, the centrifugal pump has to fetch a loose mixture of substances, possibly including stones and/or pebbles, from the sea floor. The pump must have sufficient suction capacity to do this. Said mixture of substances, possibly including stones and/or pebbles, then flows through the centrifugal pump. In order to prevent blockage, said stones and/or pebbles have to be able to pass through the pump. A wide pump having few blades is suitable for this purpose. However, by widening the pump and reducing the number of blades, the suction characteristics are adversely affected.
- An object of the invention is to provide an improved centrifugal pump.
- this object is achieved in that the ratio between the spherical diameter Bol and the suction diameter D z is greater than 0.43, and the ratio between the width B w of the rotor and the suction diameter D z is greater than 0.43, and the ratio between the external diameter D w of the rotor and the suction diameter D z is between 2.3 and 2.5.
- the centrifugal pump according to the invention has a special hydraulic configuration.
- the pump has a larger spherical passage and better suction characteristics than known pumps having a comparable suction diameter.
- the centrifugal pump according to the invention is accordingly suitable for conveying very coarse materials, while the risk of blockage is minimal.
- the ratio between the spherical diameter Bol and the suction diameter D z is approximately 0.5.
- the ratio between the width B w of the rotor and the suction diameter D z is approximately 0.5
- the ratio between the external diameter D w of the rotor and the suction diameter D z is approximately 2.4.
- the spout-shaped outlet of the pump housing has a narrowest passage with a throat diameter D k , the ratio between the throat diameter D k of the spout-shaped outlet and the suction diameter D z being between 0.5 and 0.7. Said ratio between the throat diameter D k of the spout-shaped outlet and the suction diameter D z is, for example, approximately 0.68.
- the spout-shaped outlet may, at the head end thereof, define a press diameter Dp, the ratio between the press diameter Dp and the suction diameter D z being greater than 0.7 or 0.75.
- the invention also relates to the use of a centrifugal pump as described above.
- the specific rotational speed of the pump is, for example, between 0.05 and 0.12. For example: if the rotational speed of the rotor is 302 revolutions per second, the flow rate 4.4 m 3 /s and the pressure differential 610 kPa, then the specific rotational speed is 0.086.
- the centrifugal pump according to the invention is denoted in its entirety in figures 1 and 2 by reference numeral 1.
- the centrifugal pump 1 comprises a pump housing 2 shaped like a volute (spiral casing).
- the pump housing 2 has a circumferential wall 3 and a spout-shaped outlet 5 attached tangentially to the circumferential wall 3 of the pump housing 2.
- the junction between the inner surface of the tangential outlet 5 and the inner surface of the circumferential wall 3 of the pump housing 2 defines what is known as a cutwater 4.
- the pump housing 2 also has an axial inlet 6.
- a rotor 7 is attached in the pump housing 2 such that it may rotate about an axial rotation axis A.
- the rotor 7 has a central boss 9 which may be fastened to a drive shaft (not shown).
- a shaft shield 11 extends from the central boss 9.
- the shaft shield 11 forms a first wall for delimiting the flow within the rotor 7.
- the rotor has a suction shield 12 which defines a second wall for delimiting the flow within the rotor 7.
- the suction shield 12 has an axial supply 14 which is aligned with the axial inlet of the pump housing 2.
- a plurality of rotor blades 15 are fastened between the shields 11, 12.
- the rotor 7 comprises three rotor blades 15.
- the rotor blades 15 each extend substantially radially to the rotation axis A.
- Each rotor blade 15 comprises a radial inner end 18 and a radial outer end 17.
- the circumferential channel 19 has a passage surface area which increases somewhat in the circumferential direction from the cutwater 4 toward the outlet 5.
- the characteristic dimensions of the centrifugal pump 1 are indicated in figures 1 and 2. These characteristic dimensions largely determine the characteristics of the pump.
- the rotor 7 has an outermost diameter D w which is defined by the radial outer edges of the shields 11, 12.
- the rotor 7 has a width B w extending between the mutually facing surfaces of the shaft shield 11 and the suction shield 12.
- the axial supply 14 of the rotor 7 defines a suction diameter D z .
- An inlet pipe can be connected to the axial inlet 16 of the pump housing 2.
- the centrifugal pump 1 also has what is known as a spherical passage Bol which is defined by the diameter of the largest sphere able to pass between the rotor blades.
- a throat diameter D k which is defined by the narrowest passage of the spout-shaped outlet 5 of the pump housing 2. Said narrowest passage is located in proximity to the cutwater 4.
- the spout-shaped outlet 5 also has a press diameter Dp located at the tip thereof.
- the distance, extending parallel to the centre line B of the outlet 5, between the crossing 4 and the level of the rotation axis A is indicated by the parameter T.
- the thickness of the circumferential channel 19 at the location of the cutwater 4 is represented in Figure 1 by V.
- the characteristic dimensions of the centrifugal pump 1 are matched to one another in such a way that the ratio between the spherical diameter Bol and the suction diameter D z is greater than 0.43, the ratio between the width B w of the rotor and the suction diameter D z is greater than 0.43, and the ratio between the external diameter D w of the rotor and the suction diameter D z is between 2.3 and 2.5.
- the ratio between the spherical diameter Bol and the suction diameter D z and the ratio between the width B w of the rotor and the suction diameter D z are both approximately 0.5, whereas the ratio between the external diameter D w of the rotor and the suction diameter D z is approximately 2.4.
- the ratio between the throat diameter D k of the spout-shaped outlet and the suction diameter D z is between 0.5 and 0.7 - in this illustrative embodiment, approximately 0.68.
- the ratio between the press diameter D p and the suction diameter D z is in this case greater than 0.75.
- the V/D z value is, in accordance with the invention, preferably greater than 0.285 - for example, 0.3.
- the distance T is, for example, almost as great as the suction diameter D z .
- the characteristic dimensions of the centrifugal pump 1 are, in particular: Parameter D w B w D z D p D k V T Bol Dimensions (mm) 2640 550 1100 850 750 330 1095 550
- the centrifugal pump 1 has a hydraulic design which is particularly suitable for the pumping of a dredging mixture including stones and/or pebbles. Compared to known pumps, comparatively large stones and/or pebbles are able to pass through the centrifugal pump 1, so the risk of blockage is reduced. At the same time, this special hydraulic design of the centrifugal pump 1 ensures that the suction capacity thereof is sufficiently great to be able to pick up stones and/or pebbles of this type from the sea floor.
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)
- Saccharide Compounds (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06120843A EP1903216B1 (de) | 2006-09-18 | 2006-09-18 | Zentrifugalpumpe und deren Anwendung |
AT06120843T ATE447110T1 (de) | 2006-09-18 | 2006-09-18 | Zentrifugalpumpe und deren anwendung |
DE602006010075T DE602006010075D1 (de) | 2006-09-18 | 2006-09-18 | Zentrifugalpumpe und deren Anwendung |
CN2007101821975A CN101201055B (zh) | 2006-09-18 | 2007-09-18 | 离心泵及其应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06120843A EP1903216B1 (de) | 2006-09-18 | 2006-09-18 | Zentrifugalpumpe und deren Anwendung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1903216A1 true EP1903216A1 (de) | 2008-03-26 |
EP1903216B1 EP1903216B1 (de) | 2009-10-28 |
Family
ID=37762587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06120843A Active EP1903216B1 (de) | 2006-09-18 | 2006-09-18 | Zentrifugalpumpe und deren Anwendung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1903216B1 (de) |
CN (1) | CN101201055B (de) |
AT (1) | ATE447110T1 (de) |
DE (1) | DE602006010075D1 (de) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL2005810C2 (en) * | 2010-12-03 | 2012-06-05 | Ihc Syst Bv | Centrifugal pump and a double bent rotor blade for use in such a centrifugal pump. |
WO2012142386A1 (en) | 2011-04-14 | 2012-10-18 | Flsmidth A/S | Low-wear slurry pump |
WO2013112045A1 (en) | 2012-01-25 | 2013-08-01 | Ihc Holland Ie B.V. | Pump and a method of manufacturing such a pump |
WO2013163601A1 (en) * | 2012-04-27 | 2013-10-31 | Weir Minerals Australia, Ltd. | Centrifugal pump casing with offset discharge |
US20140056734A1 (en) * | 2012-08-24 | 2014-02-27 | Asmo Co., Ltd. | Impeller for centrifugal pump and centrifugal pump of vehicle washer device |
CN103742444A (zh) * | 2013-12-31 | 2014-04-23 | 江苏大学 | 一种多相混输泵叶轮的多工况设计方法 |
JP2014511973A (ja) * | 2011-04-21 | 2014-05-19 | カーエスベー・アクチエンゲゼルシャフト | 遠心ポンプに用いられるインペラ |
AU2012254210B2 (en) * | 2011-05-09 | 2016-02-25 | Luossavaara-Kiirunavaara Ab | Rotor machine intended to function as a pump or an agitator and an impeller for such a rotor machine |
JP2017214896A (ja) * | 2016-06-01 | 2017-12-07 | 株式会社クボタ | 羽根車 |
CN111102246A (zh) * | 2020-01-07 | 2020-05-05 | 宁波方太厨具有限公司 | 一种离心风机的蜗壳型线生成方法 |
KR20210110931A (ko) | 2020-03-02 | 2021-09-10 | 엘지전자 주식회사 | 유체 순환용 벌루트 펌프 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103334951B (zh) * | 2013-03-11 | 2015-07-22 | 梁遗祥 | 一种推力泵 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2307714A1 (de) * | 1972-02-21 | 1973-08-30 | Joenkoepings Mek Werkstads Ab | Pumpe, insbesondere fuer zelluloseund andere fasersuspensionen |
US5797724A (en) * | 1992-12-29 | 1998-08-25 | Vortex Australia Proprietary, Ltd. | Pump impeller and centrifugal slurry pump incorporating same |
DE10305726A1 (de) * | 2002-03-14 | 2003-10-02 | Ksb Ag | Kreiselpumpe mit Zerkleinerungseinrichtung |
WO2005002732A1 (en) * | 2003-06-27 | 2005-01-13 | Envirotech Pumpsystems, Inc. | Pump impeller and chopper plate for a centrifugal pump |
-
2006
- 2006-09-18 DE DE602006010075T patent/DE602006010075D1/de active Active
- 2006-09-18 AT AT06120843T patent/ATE447110T1/de not_active IP Right Cessation
- 2006-09-18 EP EP06120843A patent/EP1903216B1/de active Active
-
2007
- 2007-09-18 CN CN2007101821975A patent/CN101201055B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2307714A1 (de) * | 1972-02-21 | 1973-08-30 | Joenkoepings Mek Werkstads Ab | Pumpe, insbesondere fuer zelluloseund andere fasersuspensionen |
US5797724A (en) * | 1992-12-29 | 1998-08-25 | Vortex Australia Proprietary, Ltd. | Pump impeller and centrifugal slurry pump incorporating same |
DE10305726A1 (de) * | 2002-03-14 | 2003-10-02 | Ksb Ag | Kreiselpumpe mit Zerkleinerungseinrichtung |
WO2005002732A1 (en) * | 2003-06-27 | 2005-01-13 | Envirotech Pumpsystems, Inc. | Pump impeller and chopper plate for a centrifugal pump |
US20050045757A1 (en) | 2003-06-27 | 2005-03-03 | Doering Brandon R. | Pump impeller and chopper plate for a centrifugal pump |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9638206B2 (en) | 2010-12-03 | 2017-05-02 | Ihc Holland Ie B.V. | Centrifugal pump and a double bent rotor blade for use in such a centrifugal pump |
WO2012074402A1 (en) | 2010-12-03 | 2012-06-07 | Ihc Holland Ie B.V.I | Centrifugal pump and a double bent rotor blade for use in such a centrifugal pump |
CN103348142B (zh) * | 2010-12-03 | 2017-06-06 | Ihc荷兰Ie有限公司 | 离心泵以及在这种离心泵中使用的双弯曲转子叶片 |
NL2005810C2 (en) * | 2010-12-03 | 2012-06-05 | Ihc Syst Bv | Centrifugal pump and a double bent rotor blade for use in such a centrifugal pump. |
CN103348142A (zh) * | 2010-12-03 | 2013-10-09 | Ihc荷兰Ie有限公司 | 离心泵以及在这种离心泵中使用的双弯曲转子叶片 |
US9657739B2 (en) | 2011-04-14 | 2017-05-23 | Flsmidth A/S | Low-wear slurry pump |
AU2012242661B2 (en) * | 2011-04-14 | 2016-02-25 | Flsmidth A/S | Low-wear slurry pump |
WO2012142386A1 (en) | 2011-04-14 | 2012-10-18 | Flsmidth A/S | Low-wear slurry pump |
EP2697516A4 (de) * | 2011-04-14 | 2015-06-24 | Smidth As F L | Verschleissarme schlammpumpe |
JP2014511973A (ja) * | 2011-04-21 | 2014-05-19 | カーエスベー・アクチエンゲゼルシャフト | 遠心ポンプに用いられるインペラ |
AU2012254210B2 (en) * | 2011-05-09 | 2016-02-25 | Luossavaara-Kiirunavaara Ab | Rotor machine intended to function as a pump or an agitator and an impeller for such a rotor machine |
US9726193B2 (en) | 2012-01-25 | 2017-08-08 | Ihc Holland Ie B.V. | Pump and a method of manufacturing such a pump |
WO2013112045A1 (en) | 2012-01-25 | 2013-08-01 | Ihc Holland Ie B.V. | Pump and a method of manufacturing such a pump |
WO2013163601A1 (en) * | 2012-04-27 | 2013-10-31 | Weir Minerals Australia, Ltd. | Centrifugal pump casing with offset discharge |
US9222484B2 (en) | 2012-04-27 | 2015-12-29 | Weir Minerals Australia, Ltd. | Centrifugal pump casing with offset discharge |
CN104334889A (zh) * | 2012-04-27 | 2015-02-04 | 伟尔矿物澳大利亚私人有限公司 | 具有偏置式排出口的离心泵壳体 |
US20140056734A1 (en) * | 2012-08-24 | 2014-02-27 | Asmo Co., Ltd. | Impeller for centrifugal pump and centrifugal pump of vehicle washer device |
CN103742444A (zh) * | 2013-12-31 | 2014-04-23 | 江苏大学 | 一种多相混输泵叶轮的多工况设计方法 |
CN103742444B (zh) * | 2013-12-31 | 2017-11-17 | 江苏大学 | 一种多相混输泵叶轮的多工况设计方法 |
JP2017214896A (ja) * | 2016-06-01 | 2017-12-07 | 株式会社クボタ | 羽根車 |
CN111102246A (zh) * | 2020-01-07 | 2020-05-05 | 宁波方太厨具有限公司 | 一种离心风机的蜗壳型线生成方法 |
KR20210110931A (ko) | 2020-03-02 | 2021-09-10 | 엘지전자 주식회사 | 유체 순환용 벌루트 펌프 |
Also Published As
Publication number | Publication date |
---|---|
ATE447110T1 (de) | 2009-11-15 |
DE602006010075D1 (de) | 2009-12-10 |
CN101201055A (zh) | 2008-06-18 |
CN101201055B (zh) | 2012-06-13 |
EP1903216B1 (de) | 2009-10-28 |
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