WO2010125142A2 - Pompe à vis - Google Patents

Pompe à vis Download PDF

Info

Publication number
WO2010125142A2
WO2010125142A2 PCT/EP2010/055804 EP2010055804W WO2010125142A2 WO 2010125142 A2 WO2010125142 A2 WO 2010125142A2 EP 2010055804 W EP2010055804 W EP 2010055804W WO 2010125142 A2 WO2010125142 A2 WO 2010125142A2
Authority
WO
WIPO (PCT)
Prior art keywords
screw pump
profile
spindle
pump according
housing
Prior art date
Application number
PCT/EP2010/055804
Other languages
German (de)
English (en)
Other versions
WO2010125142A3 (fr
Inventor
Roland Maurischat
Original Assignee
Leistritz Aktiengesellschaft
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 Leistritz Aktiengesellschaft filed Critical Leistritz Aktiengesellschaft
Publication of WO2010125142A2 publication Critical patent/WO2010125142A2/fr
Publication of WO2010125142A3 publication Critical patent/WO2010125142A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter

Definitions

  • the invention relates to a screw pump, with a housing in which a drive spindle and at least one counter-rotating running spindle are received with interlocking profile packages.
  • Shear and spray pumps are used for the conveying of liquids and multiphase mixtures of different types.
  • the drive spindle and the at least one running spindle have delivery profiles, which together with the housing form displacement chambers through which the fluid is conveyed axially from the suction side to the pressure side.
  • Fig. 1 shows a conventional double-flow screw pump 1, with a housing 24 and a housing insert 2, in which a drive spindle 3 and an opposite running spindle 4 with intermeshing profile sections 5, 6 are added.
  • the screw pump 1 is also suitable for the promotion of non-lubricating, polluted or gas-laden media.
  • the maximum possible differential pressure is limited in such conventional screw pumps by the hydraulic lateral force and the associated deflection of the spindles.
  • the load capacity of the bearings at both ends of the spindles of a pressure increase limits, since larger are required at higher operating pressure, but the space available for the bearing space is limited.
  • the invention is therefore based on the object to provide a screw pump, which can be operated even at an increased differential pressure.
  • the invention is based on the finding that the hydraulic transverse force acting on the spindle is brought about by profile packs of different pitch can be influenced. With reduced lateral force acting on the spindles, the differential pressure can be increased, so that the pump can be operated at a higher operating pressure.
  • both the drive spindle and the at least one drive spindle have a first profile package with a "normal" pitch and a second profile package that has no pitch or whose pitch is zero acting hydraulic shear force halves, so that the differential pressure and thus the operating pressure at which the screw pump according to the invention can be operated, can be almost doubled.
  • the profile package having no pitch is configured as a labyrinth throttle having a plurality of throttle chambers. At this point, therefore, a throttle point is formed with a plurality of throttle chambers.
  • the efficiency can be increased by the housing having a labyrinth-like contour adapted to the profile pack in the region of the profile pack having no pitch. Due to the labyrinthine contour of this section of the housing, the length of the sealing line is significantly extended, resulting in a higher efficiency.
  • the drive spindle and / or the at least one running spindle have three bearing points.
  • the drive spindle and / or the at least one spindle can be mounted in plain bearings.
  • the plain bearings are sealed relative to the pumping chamber by mechanical seals.
  • Fig. 2 shows a screw pump 7, with a housing 8 and a
  • Housing insert 26 in which a drive spindle 9 and a counter-rotating
  • Running spindle with interlocking profile packages 11, 12 are arranged.
  • the two profile packages 1 1, 12 mesh with each other, whereby axially moving pressure chambers are generated to a medium from the suction side 13 to
  • the drive spindle 9 and the spindle 10 are each mounted in plain bearings 16, 17, 25, the sealing of the bearing with respect to the pumping chamber by means of mechanical seals 18, 19.
  • the drive spindle 9 and the spindle 10 have gears 20, 21, whereby the meshing movement the conveyor profiles is realized without contact.
  • the drive spindle 9 in addition to the profile package 11, which has a certain slope, another profile package 22 having a different pitch to it.
  • the running spindle 10 has a further profile pack 23, which has a pitch that is different from the profile pack 12.
  • the profile packs 22, 23 have no slope, or the slope or the Winkel Trents angle is zero. Accordingly, carried by the profile packages 22, 23 no promotion of the medium.
  • the hydraulic transverse force acting on the spindles 9, 10 is considerably reduced, this can be reduced to half be compared to a conventional screw pump, as shown for example in FIG. 1 is shown. The reduced hydraulic transverse force also reduces the spindle deflection, so that the screw pump 7 is suitable for a significantly increased differential pressure.
  • the profile packages 22, 23 form a multiple throttle chambers having labyrinth throttle.
  • the housing 8 has in the region of the no risung having profile packages 22, 23 adapted to the profile packages maze-like contour through which the Dichtl is 24 extended.
  • the extended Dichtl in ie 24 causes an increase in the efficiency of the screw pump. 7
  • the housing 8 of the screw pump 7 is horizontally, orthogonal to the longitudinal axis of the drive spindle 9 and the spindle 10, divided.
  • the double-suction two-spindle screw pump 7 is suitable for pumping lubricating and non-lubricating liquids with or without gaseous and abrasive components. Because of the higher operating pressure, it may e.g. in offshore applications at great depths of water, it is also able to transport the medium over long distances.

Abstract

L'invention concerne une pompe à vis, comprenant un corps dans lequel sont logées une vis d'entraînement et au moins une vis de roulement tournant en sens contraire, ces vis présentant des paquets de profilés venant en prise les uns dans les autres. Selon l'invention, les vis présentent deux paquets de profilés (12, 13, 22, 23) de pas différent.
PCT/EP2010/055804 2009-04-30 2010-04-29 Pompe à vis WO2010125142A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009019220.4 2009-04-30
DE200910019220 DE102009019220B4 (de) 2009-04-30 2009-04-30 Schraubenspindelpumpe

Publications (2)

Publication Number Publication Date
WO2010125142A2 true WO2010125142A2 (fr) 2010-11-04
WO2010125142A3 WO2010125142A3 (fr) 2011-07-14

Family

ID=42932291

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/055804 WO2010125142A2 (fr) 2009-04-30 2010-04-29 Pompe à vis

Country Status (2)

Country Link
DE (1) DE102009019220B4 (fr)
WO (1) WO2010125142A2 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2652192A (en) * 1947-06-13 1953-09-15 Curtiss Wright Corp Compound-lead screw compressor or fluid motor
DE801560C (de) * 1949-02-22 1951-01-11 Franz Dipl-Ing Burghauser Feinknetpumpe
SE302815B (fr) * 1965-01-13 1968-08-05 Svenska Rotor Maskiner Ab
GB1379575A (en) * 1971-06-08 1975-01-02 Stothert & Pitt Ltd Meshing screw pump
DD95186A1 (fr) * 1971-06-30 1973-01-12
GB2165890B (en) * 1984-10-24 1988-08-17 Stothert & Pitt Plc Improvements in pumps
DE60104086T2 (de) * 2001-04-03 2005-08-04 Cfs Slagelse A/S Schneckenfördereinrichtung für Flüssigkeiten und/oder Materialbrocken
DE20302990U1 (de) * 2003-02-24 2004-07-08 Werner Rietschle Gmbh + Co. Kg Drehkolbenpumpe
DE102005037118B3 (de) * 2005-08-03 2007-01-18 Leistritz Ag Mehrfach gelagerte zweiflutige Schraubenspindelpumpe
KR101184716B1 (ko) * 2005-08-22 2012-09-20 가시야마고교가부시끼가이샤 스크류 로터 및 진공 펌프
EP1957798B1 (fr) * 2005-12-08 2011-02-09 GHH-RAND Schraubenkompressoren GmbH Compresseur à vis

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
DE102009019220B4 (de) 2013-04-11
DE102009019220A1 (de) 2010-11-11
WO2010125142A3 (fr) 2011-07-14

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