EP1571349A1 - Aube de guidage pour une pompe - Google Patents

Aube de guidage pour une pompe Download PDF

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Publication number
EP1571349A1
EP1571349A1 EP05450036A EP05450036A EP1571349A1 EP 1571349 A1 EP1571349 A1 EP 1571349A1 EP 05450036 A EP05450036 A EP 05450036A EP 05450036 A EP05450036 A EP 05450036A EP 1571349 A1 EP1571349 A1 EP 1571349A1
Authority
EP
European Patent Office
Prior art keywords
guide vane
vane housing
housing
flange
peripheral wall
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Withdrawn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
EP05450036A
Other languages
German (de)
English (en)
Inventor
Johann Riefenthaler
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.)
Xylem Water Solutions Austria GmbH
Original Assignee
Pumpenfabrik Ernst Vogel GmbH
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 Pumpenfabrik Ernst Vogel GmbH filed Critical Pumpenfabrik Ernst Vogel GmbH
Publication of EP1571349A1 publication Critical patent/EP1571349A1/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Withdrawn legal-status Critical Current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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F04D1/063—Multi-stage pumps of the vertically split casing type
    • F04D1/066—Multi-stage pumps of the vertically split casing type the casing consisting of a plurality of annuli bolted together
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • F04D29/448—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers

Definitions

  • the invention relates to a stator housing for a centrifugal pump, which in Submersible pumps can be installed.
  • the invention also relates to single-stage or multi-stage Submersible pumps, each pump stage having a stator housing.
  • An inventive, single-stage or multi-stage submersible motor pump has in each Pump stage on a guide vane housing according to the invention.
  • An essential feature of the guide vane housing according to the invention is that at least in a predominant region of a circumferential wall of the guide vane housing, but preferably on the entire peripheral wall, the ratio of the wall thickness of Peripheral wall to the maximum outer diameter of the vane housing smaller than 0.03, preferably less than 0.025. Due to the small wall thickness of Guide vane housing makes it possible to carry larger inner diameter and thus to achieve more fluid throughput or delivery head per pump stage. The Inventive vane housing has a significantly lower weight than conventional vane housing. In total, this results from lower product costs due to the reduced material consumption in manufacturing a higher "customer value "as with currently existing products.
  • stator housings are in gray cast iron or cast steel produced. Both gray cast iron and cast steel are significant Minimum wall thickness required, with gray cast iron on the material properties is attributed to the previously used sand casting process which offers only small dimensional accuracy and therefore for safety reasons Sizing with large safety reserves requires. It is according to the invention however, it is preferred to manufacture the stator shell by investment casting. This is the preparation of the inventively provided low wall thicknesses of Circumferential wall of the guide vane housing reliably possible.
  • the invention Guide vane housing thus represents a further development of the known, by means Casting manufactured Leitschaufelgepatuse.
  • the invention produced by investment casting Guide vane housing made of stainless steel, or alloyed cast steel, or other high-alloyed Materials that are particularly suitable for the investment casting process and with where the desired strength is achieved. Design details can be beneficial with Finite element analyzes are performed and executed.
  • the guide vane housing comprises its fluid inlet side located housing connection two thin-walled flange rings. These can to increase the functionality and rigidity at least two slugs between the Flange rings of the fluid inlet side housing connection include preferably arranged sunk, wherein the slugs fastening means, such as Threaded holes for screwing the vane housing, may have.
  • the guide vane housing according to the invention has Fluid outlet side housing connection with a thin-walled flange with Passage holes to be provided in the area of the through holes as Has screw support surface acting reinforcements in the axial direction.
  • the guide vane housing according to the invention can thin-walled stiffening ribs have the outside of the flange of the fluid outlet-side housing connection attack, wherein the stiffening ribs on the flange preferably within the Set the bolt circle diameter. It proves to prevent angular rotation furthermore advantageous. if the flange and / or a centering ring of the fluid outlet side located housing connection at its / its transition to the peripheral wall at least two inner shell ribs is / are stiffened.
  • Fig. 1A and Fig. 1B show schematic section through the Guide vane housing according to the invention, wherein Fig. 1A shows a cross section and Fig. Figure 1B is a longitudinal section taken along line D-D of Figure 1B, Figures 2 and 3 show two different three-dimensional views of the guide vane housing according to the invention, where Fig. 2 is the view from the fluid inlet side and Fig. 3 is the view from the fluid outlet side shows.
  • the guide blade housing 1 has a a peripheral wall 11 which is formed as a pressure-carrying housing wall.
  • the Wall thickness s of the peripheral wall 11 is dimensioned so that their relationship to maximum outer diameter ⁇ d of the vane housing 1 is less than 0.03, preferably less than 0.025, is.
  • Flange rings 2, 3 7 thin-walled at the fluid inlet-side housing connection Flange rings 2, 3 are formed, which extend axially and concentrically with each other. Of the Flange 2 is outside and the flange 3 inside, the inner flange 3, the pressurized peripheral wall 11 continues. The outer flange 2 is possible tangentially integrated into the peripheral wall 11.
  • the two flange rings 2, 3 are through several slugs 9 connected to each other, the slugs 9 arranged slightly sunk are.
  • the slugs 9 radially stiffen the two flange rings 2, 3 and prevent themselves result in high deformations of the vane housing under pressure.
  • Butzen 9 also threaded holes 15 for the screw connection of adjacent vane housing on.
  • the fluid-outlet-side guide vane housing 8 has a thin-walled flange 4, which extends in the radial direction and through holes 16 has, by the screws, not shown, for screwing with the Threaded holes 15 of an adjacent vane housing can be passed.
  • the Flange 4 can in the areas of the through holes 16 optionally with as Bolt support surfaces acting reinforcements 10 may be provided in the axial direction.
  • 11 are thin-walled stiffening ribs on the outer circumference of the peripheral wall. 5 attached, which prevent the axial and radial deformation of the vane housing. These ribs 5 set within the screw-hole diameter 14 and Run with the dullest possible angle of the peripheral wall 11 away towards the flange.
  • Housing ribs 6 are provided, which is a substantial stiffening of the transition region from the radial fluid outlet-side housing connection 8 to the axial pressure-carrying Cause peripheral wall 11. These ribs 6 set below the Stage housing centering ring 12 and are straight or inclined to the Seal strip diameter 13 out.
  • the stiffening measures described serve to ensure that the maximum permissible Comparative voltage is not exceeded and not inadmissibly high deformations of the vane housing, the function of a realized with it pump would affect. It is especially important to the axial expansion of the housing to take at higher levels to large total expansion of the pump body being able to lead. Because of the internal pressure, the pump shaft with impellers on pressure is claimed and thus compressed, there is a shift of the axial Position of the wheels to the vane housing. Especially at high levels can This is up to touching the wheels on the vane housing and thus the failure of Lead the pump. However, this is done according to the invention by the described Stiffening measures prevented.
  • the guide vane housing 1 is made in a precision casting process Stainless steel, alloyed cast steel or other high-alloy materials.
  • the pressurized wall thickness s of the peripheral wall 11 to the minimum reduce castable wall thickness.
  • the precision casting process comprises first of all manufacturing a wax injection mold of the vane housing to be cast with the necessary Surface quality and dimensional accuracy, wherein the wax injection mold, the outer shape of the Defines the vane housing. Subsequently, with waxing machines in doughy Condition injected into the wax spray mold. The wax parts thus obtained become then to a wax structure, a "tree", glued together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP05450036A 2004-03-01 2005-02-28 Aube de guidage pour une pompe Withdrawn EP1571349A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3282004 2004-03-01
AT3282004A AT413427B (de) 2004-03-01 2004-03-01 Leitschaufelgehäuse einer pumpenstufe

Publications (1)

Publication Number Publication Date
EP1571349A1 true EP1571349A1 (fr) 2005-09-07

Family

ID=34715945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05450036A Withdrawn EP1571349A1 (fr) 2004-03-01 2005-02-28 Aube de guidage pour une pompe

Country Status (2)

Country Link
EP (1) EP1571349A1 (fr)
AT (1) AT413427B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011023873A1 (fr) * 2009-08-25 2011-03-03 Snecma Carter de turbomachine a etancheite renforcee
RU2497025C1 (ru) * 2012-03-12 2013-10-27 Закрытое Акционерное Общество "Научно-производственное объединение "Гидравлические аппараты" (ЗАО "НПО "Гидроаппарат") Вертикальный насос

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5385447A (en) * 1993-03-26 1995-01-31 Marine Pollution Control Axial flow pump for debris-laden oil
DE4433066A1 (de) * 1994-09-16 1996-03-21 Klein Schanzlin & Becker Ag Halbaxiale Einlaufdüsen für Axialpumpen
DE4446193A1 (de) * 1994-12-23 1996-06-27 Grundfos As Verfahren zur Herstellung eines Laufrades
US6042332A (en) * 1997-04-24 2000-03-28 Ksb Aktiengesellschaft Housing part for a propeller pump

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001055997A (ja) * 1999-08-18 2001-02-27 Kubota Corp ポンプ構成部材
IT1315390B1 (it) * 2000-02-11 2003-02-10 Vertical Srl Pompa centrifuga perfezionata

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5385447A (en) * 1993-03-26 1995-01-31 Marine Pollution Control Axial flow pump for debris-laden oil
DE4433066A1 (de) * 1994-09-16 1996-03-21 Klein Schanzlin & Becker Ag Halbaxiale Einlaufdüsen für Axialpumpen
DE4446193A1 (de) * 1994-12-23 1996-06-27 Grundfos As Verfahren zur Herstellung eines Laufrades
US6042332A (en) * 1997-04-24 2000-03-28 Ksb Aktiengesellschaft Housing part for a propeller pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011023873A1 (fr) * 2009-08-25 2011-03-03 Snecma Carter de turbomachine a etancheite renforcee
FR2949517A1 (fr) * 2009-08-25 2011-03-04 Snecma Carter de turbomachine a etancheite renforcee
US9086077B2 (en) 2009-08-25 2015-07-21 Snecma Turbine machine casing with reinforced sealing
RU2497025C1 (ru) * 2012-03-12 2013-10-27 Закрытое Акционерное Общество "Научно-производственное объединение "Гидравлические аппараты" (ЗАО "НПО "Гидроаппарат") Вертикальный насос

Also Published As

Publication number Publication date
AT413427B (de) 2006-02-15
ATA3282004A (de) 2005-07-15

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