EP0448941A3 - Stator for an eccentric screw pump - Google Patents

Stator for an eccentric screw pump Download PDF

Info

Publication number
EP0448941A3
EP0448941A3 EP19910101831 EP91101831A EP0448941A3 EP 0448941 A3 EP0448941 A3 EP 0448941A3 EP 19910101831 EP19910101831 EP 19910101831 EP 91101831 A EP91101831 A EP 91101831A EP 0448941 A3 EP0448941 A3 EP 0448941A3
Authority
EP
European Patent Office
Prior art keywords
stator
screw pump
eccentric screw
thread
profile
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
Application number
EP19910101831
Other languages
German (de)
Other versions
EP0448941B1 (en
EP0448941A2 (en
Inventor
Heinz Gruber
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.)
GD-ANKER GRUBER-DUEBEL-ANKER GMBH
Original Assignee
GD-ANKER 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 GD-ANKER GmbH filed Critical GD-ANKER GmbH
Publication of EP0448941A2 publication Critical patent/EP0448941A2/en
Publication of EP0448941A3 publication Critical patent/EP0448941A3/en
Application granted granted Critical
Publication of EP0448941B1 publication Critical patent/EP0448941B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
    • F04C2/1075—Construction of the stationary member

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

The stator for an eccentric scroll pump has a thread-like profile on the inside and a rubber-elastic insert (2) carried on a metallic cover (1). Part of the cover is provided on the inner side with a thread-like profile and another part has a smooth cylindrical shape which amounts to up to 50 per cent of the length of the stator.
EP91101831A 1990-03-01 1991-02-09 Stator for an eccentric screw pump Expired - Lifetime EP0448941B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4006339A DE4006339C2 (en) 1990-03-01 1990-03-01 Stator for an eccentric screw pump
DE4006339 1990-03-01

Publications (3)

Publication Number Publication Date
EP0448941A2 EP0448941A2 (en) 1991-10-02
EP0448941A3 true EP0448941A3 (en) 1992-06-24
EP0448941B1 EP0448941B1 (en) 1996-05-15

Family

ID=6401145

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101831A Expired - Lifetime EP0448941B1 (en) 1990-03-01 1991-02-09 Stator for an eccentric screw pump

Country Status (5)

Country Link
US (1) US5145342A (en)
EP (1) EP0448941B1 (en)
JP (1) JP2950629B2 (en)
AT (1) ATE138160T1 (en)
DE (2) DE4006339C2 (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6183226B1 (en) 1986-04-24 2001-02-06 Steven M. Wood Progressive cavity motors using composite materials
US5611397A (en) * 1994-02-14 1997-03-18 Wood; Steven M. Reverse Moineau motor and centrifugal pump assembly for producing fluids from a well
GB2244517B (en) * 1990-05-31 1994-05-04 Mono Pumps Ltd Helical gear pump and stator
HU207569B (en) * 1990-12-20 1993-04-28 Drilex Syst Inc Hydraulis engine
DE4111166C2 (en) * 1991-04-06 1999-03-18 Gummi Jaeger Kg Gmbh & Cie Eccentric screw pump
US5759019A (en) * 1994-02-14 1998-06-02 Steven M. Wood Progressive cavity pumps using composite materials
US6102681A (en) * 1997-10-15 2000-08-15 Aps Technology Stator especially adapted for use in a helicoidal pump/motor
DE19754818A1 (en) * 1997-12-10 1999-06-17 Artemis Kautschuk Kunststoff Process for the production of elastomer stators for eccentric screw pumps
CZ295717B6 (en) 1997-12-18 2005-10-12 Baker Hughes Incorporated Process for producing drilling motor
DE19821867A1 (en) * 1998-05-15 1999-11-18 Artemis Kautschuk Kunststoff Downhole deep drilling motor based on eccentric mono-pump principle
US6309195B1 (en) * 1998-06-05 2001-10-30 Halliburton Energy Services, Inc. Internally profiled stator tube
WO2005042910A2 (en) * 2003-10-27 2005-05-12 Dyna-Drill Technologies, Inc. Asymmetric contouring of elastomer liner on lobes in a moineau style power section stator
DE102004038477B3 (en) * 2004-08-07 2005-10-06 Netzsch-Mohnopumpen Gmbh Cavity Pump
US7214042B2 (en) * 2004-09-23 2007-05-08 Moyno, Inc. Progressing cavity pump with dual material stator
US7517202B2 (en) * 2005-01-12 2009-04-14 Smith International, Inc. Multiple elastomer layer progressing cavity stators
US7396220B2 (en) * 2005-02-11 2008-07-08 Dyna-Drill Technologies, Inc. Progressing cavity stator including at least one cast longitudinal section
CN100507274C (en) * 2006-11-03 2009-07-01 江苏大学 motor screw pump
WO2008091262A1 (en) 2007-01-24 2008-07-31 Halliburton Energy Services, Inc. Electroformed stator tube for a progressing cavity apparatus
US7950914B2 (en) * 2007-06-05 2011-05-31 Smith International, Inc. Braze or solder reinforced Moineau stator
US7878774B2 (en) * 2007-06-05 2011-02-01 Smith International, Inc. Moineau stator including a skeletal reinforcement
US8182252B2 (en) * 2007-10-30 2012-05-22 Moyno, Inc. Progressing cavity pump with split stator
US8215014B2 (en) * 2007-10-31 2012-07-10 Moyno, Inc. Method for making a stator
US20110058930A1 (en) * 2009-09-04 2011-03-10 Robbins & Myers Energy Systems L.P. Motor/pump with spiral wound stator tube
US9393648B2 (en) 2010-03-30 2016-07-19 Smith International Inc. Undercut stator for a positive displacment motor
US10450800B2 (en) * 2011-03-08 2019-10-22 Schlumberger Technology Corporation Bearing/gearing section for a PDM rotor/stator
CN103216449A (en) * 2012-01-18 2013-07-24 熊荣华 Fluid power technology of pipe cavity with linear track and closed cross section
US10527037B2 (en) * 2016-04-18 2020-01-07 Baker Hughes, A Ge Company, Llc Mud motor stators and pumps and method of making
HUE073393T2 (en) * 2021-01-19 2026-01-28 Musashi Eng Inc Fluid transfer device, coating device comprising same, and coating method
US20260062999A1 (en) * 2024-08-28 2026-03-05 Thru Tubing Solutions, Inc. Downhole fluid motor and associated methods

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3084631A (en) * 1962-01-17 1963-04-09 Robbins & Myers Helical gear pump with stator compression
US3139035A (en) * 1960-10-24 1964-06-30 Walter J O'connor Cavity pump mechanism
GB1150339A (en) * 1966-03-15 1969-04-30 Karl Schlecht Improvements in or relating to Screw Pumps
FR1592149A (en) * 1967-11-02 1970-05-11
DE2713468A1 (en) * 1977-03-26 1978-09-28 Allweiler Ag Eccentric worm pump stator - has elastomer body surrounded by reinforcement consisting of plastic impregnated fabric strip wrapping

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527673A (en) * 1947-02-28 1950-10-31 Robbins & Myers Internal helical gear pump
US3499389A (en) * 1967-04-19 1970-03-10 Seeberger Kg Worm pump
DE1703602A1 (en) * 1968-06-15 1972-04-20 Seeberger Kg Maschinen & Gerae Screw pump
DE3304751C2 (en) * 1983-02-11 1985-08-01 Kunststofftechnik Obernkirchen GmbH & Co KG, 3063 Obernkirchen Eccentric screw pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3139035A (en) * 1960-10-24 1964-06-30 Walter J O'connor Cavity pump mechanism
US3084631A (en) * 1962-01-17 1963-04-09 Robbins & Myers Helical gear pump with stator compression
GB1150339A (en) * 1966-03-15 1969-04-30 Karl Schlecht Improvements in or relating to Screw Pumps
FR1592149A (en) * 1967-11-02 1970-05-11
DE2713468A1 (en) * 1977-03-26 1978-09-28 Allweiler Ag Eccentric worm pump stator - has elastomer body surrounded by reinforcement consisting of plastic impregnated fabric strip wrapping

Also Published As

Publication number Publication date
EP0448941B1 (en) 1996-05-15
ATE138160T1 (en) 1996-06-15
DE59107796D1 (en) 1996-06-20
DE4006339C1 (en) 1991-08-01
JP2950629B2 (en) 1999-09-20
JPH0742679A (en) 1995-02-10
EP0448941A2 (en) 1991-10-02
DE4006339C2 (en) 1994-08-04
US5145342A (en) 1992-09-08

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