EP2383471A1 - Pompe à suspension - Google Patents

Pompe à suspension Download PDF

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Publication number
EP2383471A1
EP2383471A1 EP10161379A EP10161379A EP2383471A1 EP 2383471 A1 EP2383471 A1 EP 2383471A1 EP 10161379 A EP10161379 A EP 10161379A EP 10161379 A EP10161379 A EP 10161379A EP 2383471 A1 EP2383471 A1 EP 2383471A1
Authority
EP
European Patent Office
Prior art keywords
rotor
slurry pump
annular rotor
inlet
pump according
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Withdrawn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
EP10161379A
Other languages
German (de)
English (en)
Inventor
Aart Van den Dool
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.)
Castart BV
Original Assignee
Castart 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 Castart BV filed Critical Castart BV
Priority to EP10161379A priority Critical patent/EP2383471A1/fr
Publication of EP2383471A1 publication Critical patent/EP2383471A1/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Withdrawn legal-status Critical Current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
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid
    • 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
    • F04D29/181—Axial flow rotors
    • 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
    • F04D29/186—Shaftless rotors
    • 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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/548—Specially 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially 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
    • F04D3/00—Axial-flow pumps

Definitions

  • the invention relates to a slurry pump comprising:
  • centrifugal pump Pumping slurry while dredging is commonly done with centrifugal pumps.
  • a centrifugal pump has typically an axial inlet and a tangential outlet.
  • the necessary piping to connect such a centrifugal pump have necessarily a number of bends, especially when two or more pumps are arranged in series.
  • Slurry is a very abrasive fluid containing sand and rocks. This results in a high wear of the pumping system, in particular at bends and in the pump. Therefore it is common to use parts, which can be replaced easily.
  • the pump shell, the impeller, wear plates and suction liner can be replaced relatively easily.
  • an inline pump which can be arranged in line with a pipeline, such that the slurry does not need to go through bends and only has to flow in a linear direction.
  • the impeller vanes extend into the pathway and impel the slurry in a linear way, contrary to a centrifugal pump in which the slurry is sucked in axially, impelled radially and expelled tangentially.
  • a slurry pump according to the preamble which is characterized by barrier means which are arranged in the inlet and cover in view of the flow direction, during use of the pump, at least a bottom part of the rotor.
  • the barrier means thus shield of the lower part of the rotor, such that the heavy parts in the slurry cannot get into contact with the impeller vanes.
  • the barrier means extend to the outer edge of the through flow area. This ensures that the full vanes at the bottom are shielded from the heavy parts in the slurry.
  • the barrier means provide a kind of speed bump in the slurry pump, such that the heavy parts jump over the bottom impeller vanes.
  • the barrier means extend over at least 15% of the arc of the annular rotor. This ensures that the major part of the rocks in the slurry will be shielded from the impeller vanes.
  • the driving means comprise a number of coils arranged around the circumference of the annular rotor, such that the coils interact with the rotor and drive the rotor.
  • a linear drive motor is provided for driving the rotor and the arranged impeller blades.
  • the peripheral surface of the annular rotor is provided with gear teeth and wherein the driving means engage on the gear teeth to rotate the annular rotor.
  • the teeth on the peripheral surface it is possible to drive the rotor with a more conventional motor like an electric motor.
  • the output shaft of such an electric motor can be provided with a gear which engages on the peripheral surface of the annular rotor.
  • the inlet, outlet and through flow area are arranged substantially in line with each other. This provides for an effective inline pump.
  • the inlet and outlet are arranged in line with each other and wherein the barrier means are provided by arranging the annular rotor eccentric from the inlet and outlet. Due to the eccentric arrangement of the rotor, part of the rotor is outside of the flow path, such that the barrier means are provided by the inlet part and outlet part of the pump.
  • the slurry pump according to the invention can be arranged inline in a pipe line. Accordingly less elbows are needed in the pumping room in comparison to prior art centrifugal pumps, especially when two or more pumps are arranged after each other.
  • an inline pump has the advantage of creating less disturbance in the water due to its much more streamlined design without elbows, when used on a hopper dredger.
  • FIG 1 shows a first embodiment of a slurry pump 1 according to the invention.
  • the slurry pump has an inlet section 2 and an outlet section 3.
  • the inlet section 2 has a flange 4 for connection to a supply pipe (not shown).
  • the outlet section 3 has also a flange 5 for connection to further piping (not shown).
  • annular rotor 6 In the middle of the housing 2, 3 of the pump 1 an annular rotor 6 is arranged.
  • This annular rotor 6 has a number of impeller vanes 7 directed to the center axis 8 of the rotor 1.
  • a number of coils 9 are arranged for driving the rotor 6.
  • the coils 9 are arranged behind a removable cover 10, which enables a simple exchange of the coils 9 or the rotor 6.
  • the rotor 6 is sealed from the housing by sealings 18. This prevents water or slurry to get in to contact with the coils 9.
  • the bottom 11 of the inlet section 2 is inclined such that the bottom 11 runs up to the level of the tip 12 of the impeller vane 7.
  • Rocks 13 or heavy pieces in the fluid will sink to near the bottom 11.
  • the heavy pieces and rocks 13 will be guided over the tip 12 and it will be prevented that they do contact the impeller vanes 7.
  • the bottom 14 is also inclined to provide a smooth flow of the fluid and reduce any turbulence just after the impeller vanes 7.
  • Figure 2 shows a cross sectional view in flow direction.
  • the tips 12 of the impeller vanes 7 describe a path 15, which defines the outer edge of a through flow area 16.
  • the bottom 11 of the inlet section 2 is defined such that along an arc of the annular rotor 6, defined by the angle ⁇ , the bottom 11 extends above the outer edge 16.
  • FIG 3 shows a cross sectional view of a second embodiment 20 of a slurry pump according to the invention.
  • the pump 20 has a pipe shaped housing 21 with a center axis 22.
  • an annular rotor 23 is arranged in the middle of the housing 21 .
  • the center axis 25 of the annular rotor 23 is eccentric to the center axis 22 of the pipe shaped housing.
  • the tip 26 of the bottom impeller vane 26 is below the inner bottom wall of the housing 21, such that heavy particles in the pump fluid will not contact any of the impeller vanes 24.
  • Another advantage of the eccentric arrangement of the rotor 23, is that an electric motor 27 can be arranged near the housing 21 and that a gear 28 arranged on the axle 29 of the electric motor 27 can engage the gear teeth 24.
  • Figure 4 shows a variant of the slurry pump according to figure 1 .
  • the same reference signs are used for the same parts.
  • the slurry pump 30 is different from the slurry pump 1 of figure 1 , in that the bottom part 14 of the outlet section 3 is flat. As a result the bottom part of the rotor 6 is exposed on the side of the outlet section 3.
  • the advantage is that the impeller vanes 7 have a slightly increased contact surface with the fluid, such that the power is transferred better to the fluid. Also sand and other particles, which could have sunk to the bottom of the pump 30 between the rotor 6 and the housing are washed out more easily.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP10161379A 2010-04-28 2010-04-28 Pompe à suspension Withdrawn EP2383471A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10161379A EP2383471A1 (fr) 2010-04-28 2010-04-28 Pompe à suspension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10161379A EP2383471A1 (fr) 2010-04-28 2010-04-28 Pompe à suspension

Publications (1)

Publication Number Publication Date
EP2383471A1 true EP2383471A1 (fr) 2011-11-02

Family

ID=43079829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10161379A Withdrawn EP2383471A1 (fr) 2010-04-28 2010-04-28 Pompe à suspension

Country Status (1)

Country Link
EP (1) EP2383471A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110594165A (zh) * 2019-10-23 2019-12-20 合肥恒大江海泵业股份有限公司 一种潜水电泵
WO2020005072A1 (fr) * 2018-06-29 2020-01-02 Jungminds As Machine à fluide sans arbre dotée d'une roue à aubes entraînée par l'intermédiaire de son bord
WO2020104785A1 (fr) * 2018-11-20 2020-05-28 James Fisher Mfe Limited Appareil pour fouille dans l'eau
CN111927790A (zh) * 2020-09-07 2020-11-13 薛峰 一种无轴式潜水轴流电泵

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8201160A (nl) * 1982-03-19 1983-10-17 Staalverwerking Stroobos B V Stuwschroef, en schip of pomp die voorzien is van een stuwschroef.
BE901181A (fr) * 1984-11-30 1985-03-15 Bulatov Georges Helice de propulsion ou roue de pompe rotative.
US5181868A (en) * 1990-02-06 1993-01-26 Reinhard Gabriel Jet propulsion device for watercraft, aircraft, and circulating pumps
FR2681384A1 (fr) * 1991-09-12 1993-03-19 Doryokuro Kakunenryo Pompe hybride.
WO1997039244A1 (fr) * 1996-04-16 1997-10-23 Arthur John Arnold Appareil rotatif a pales

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8201160A (nl) * 1982-03-19 1983-10-17 Staalverwerking Stroobos B V Stuwschroef, en schip of pomp die voorzien is van een stuwschroef.
BE901181A (fr) * 1984-11-30 1985-03-15 Bulatov Georges Helice de propulsion ou roue de pompe rotative.
US5181868A (en) * 1990-02-06 1993-01-26 Reinhard Gabriel Jet propulsion device for watercraft, aircraft, and circulating pumps
FR2681384A1 (fr) * 1991-09-12 1993-03-19 Doryokuro Kakunenryo Pompe hybride.
WO1997039244A1 (fr) * 1996-04-16 1997-10-23 Arthur John Arnold Appareil rotatif a pales

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020005072A1 (fr) * 2018-06-29 2020-01-02 Jungminds As Machine à fluide sans arbre dotée d'une roue à aubes entraînée par l'intermédiaire de son bord
CN112352105A (zh) * 2018-06-29 2021-02-09 流经股份有限公司 具有经由叶轮的边缘驱动的叶轮的无轴流体机械
WO2020104785A1 (fr) * 2018-11-20 2020-05-28 James Fisher Mfe Limited Appareil pour fouille dans l'eau
CN110594165A (zh) * 2019-10-23 2019-12-20 合肥恒大江海泵业股份有限公司 一种潜水电泵
CN110594165B (zh) * 2019-10-23 2024-07-23 合肥恒大江海泵业股份有限公司 一种潜水电泵
CN111927790A (zh) * 2020-09-07 2020-11-13 薛峰 一种无轴式潜水轴流电泵

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