EP1733147A2 - Stator pour une pompe a vis sans fin excentrique ou un moteur a vis sans fin excentrique selon le principe moineau - Google Patents

Stator pour une pompe a vis sans fin excentrique ou un moteur a vis sans fin excentrique selon le principe moineau

Info

Publication number
EP1733147A2
EP1733147A2 EP04803161A EP04803161A EP1733147A2 EP 1733147 A2 EP1733147 A2 EP 1733147A2 EP 04803161 A EP04803161 A EP 04803161A EP 04803161 A EP04803161 A EP 04803161A EP 1733147 A2 EP1733147 A2 EP 1733147A2
Authority
EP
European Patent Office
Prior art keywords
stator
inner tube
outer tube
stator according
thread
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
EP04803161A
Other languages
German (de)
English (en)
Other versions
EP1733147B1 (fr
Inventor
Sebastian Jäger
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.)
Artemis Kautschuk und Kunststoff Technik GmbH
Original Assignee
Artemis Kautschuk und Kunststoff Technik 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 Artemis Kautschuk und Kunststoff Technik GmbH filed Critical Artemis Kautschuk und Kunststoff Technik GmbH
Publication of EP1733147A2 publication Critical patent/EP1733147A2/fr
Application granted granted Critical
Publication of EP1733147B1 publication Critical patent/EP1733147B1/fr
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

Definitions

  • the invention relates to a stator for an eccentric screw pump or an eccentric screw motor with a stator, which has an outer tube with a lining made of rubber or a rubber-like material and a cavity shaped in the manner of a two- or multi-start helical thread for receiving a rigid, also shaped in the manner of a helical thread Has rotor, the steep thread of the stator each has a gear more than the steep thread of the rotor.
  • the invention has for its object to provide a stator that remains functional even under conditions where the tight bond between the liner and the outer tube z. B. would be destroyed by chemical influences or high temperatures.
  • This object is achieved in that an inner tube provided with openings is arranged in the lining.
  • the lining's elastomeric material clings to the inner tube by penetrating the openings. This results in a positive connection between the individual parts of the stator, which is far better suited to withstand the loads described above than a chemical rubber-metal connection, for example by means of an adhesion promoter.
  • spacer strips are arranged between the outer tube and the inner tube.
  • the elastomer material of the lining can not only penetrate the openings in the inner tube. It can also, at least in the area between the spacer strips
  • the inner tube Enclose inner tube and has a flat contact to the outer tube in these areas.
  • the inner tube can be connected to the outer tube, e.g. B. by welding on the end faces or holes that penetrate the outer tube.
  • the spacer strips achieve a particularly firm and secure connection between the parts of the stator without significantly increasing the effort involved in manufacturing the stator and with regard to the components used.
  • the stator is usually produced in such a way that the elastomer material that is to form the lining is introduced into the outer tube by spraying, the inner tube already being arranged in the outer tube.
  • the spacer strips prevent the inner tube from being pushed towards the outer tube by the spray pressure. They thus ensure that there is sufficient space between the outer tube and inner tube, which the elastomer material fills, which passes through the openings in the interior, thereby creating undercuts which ensure a very good positive connection with the inner tube.
  • the spacer strips can be straight, flat profiles which extend in the direction of the longitudinal axis of the stator and practically over most of its length, several spacer strips of this type being arranged distributed over the circumference of the inner tube.
  • the spacer strips are annular and enclose the circumference of the inner tube, it being possible for a plurality of such rings to be arranged spaced apart in the longitudinal direction on a stator.
  • the spacer bar can be helical. This embodiment has the advantage that a single spacer bar of this type may already be sufficient.
  • a similar intimate claw between the Elsto material of the lining and the inner tube can also be achieved by a further embodiment of the invention by the inner tube having perforations is wave-shaped, it being immaterial whether the waveform is chosen in the axial or radial direction of the inner tube ,
  • spacer bar / s in cross section is not limited. It can e.g. B. round, square and / or rectangular spacer strips can be used.
  • FIG. 2 shows another embodiment of the stator according to the invention in cross section
  • FIG. 3 shows a section of the outer and inner tubes of a stator according to FIG. 2 in a perspective view with partially exposed layers
  • FIG. 5 shows the perspective illustration of a further embodiment according to the invention with partially exposed layers
  • FIG. 6 shows a longitudinal section through the end piece of a stator according to FIG. 2,
  • FIG. 7 shows a longitudinal section through the end piece of a stator according to FIG. 2 in a modified version compared to FIG. 6,
  • FIG. 8 shows a further embodiment of a stator according to the invention in cross section
  • Fig. 9 shows another embodiment of a stator according to the invention in longitudinal section
  • FIG. 10 shows a further embodiment of a stator.
  • the stator shown in Fig. 1 has an outer tube 1 made of a solid material, for. B. steel, on the inside of which a lining 2 made of rubber or a rubber-like material is arranged.
  • the lining 2 has a bore 3, which is shown only roughly in the drawing.
  • the bore 3 forms the space for receiving the rotor (not shown) and the material to be conveyed (pump cavity) if the stator is used in an eccentric screw pump, or the space for receiving the flowing drive means if the stator is part of a device used as a motor is.
  • the bore 3 extends over the entire length of the stator.
  • an inner tube 4 is arranged in the outer tube 1, which has a perforation or a plurality of openings 5 and which is firmly connected to the outer tube 1.
  • the openings 5 are filled with the material of the lining 2. This results in a positive connection between the outer tube 1 and the liner 2, which secures the liner 2 both against displacement in the longitudinal direction and against rotation about its axis.
  • a connection between the outer tube and the lining produced by vulcanization or gluing can be omitted.
  • FIGS. 2 and 3 has the same components as the stator according to FIG. 1, but here there are spacers 6 between the outer tube 1 and the inner tube 4 are arranged.
  • FIG. 2 shows the cross section of the stator shown in perspective in FIG. 3.
  • the number of four spacer strips 4 selected in FIGS. 2 and 3 is exemplary.
  • the inner tube 4 can either consist of a tube having openings or be formed from a commercially available perforated plate which is bent cylindrically. To produce a stator according to the invention, the inner tube 4 and the spacer strips 6 m are pushed the outer tube 1. The rubber material of the lining 2 can then be introduced by spraying.
  • FIG. 4 and 5 show two possibilities of how the spacer strips 6 ', 6 "' can be arranged between the outer tube 1 and the inner tube 4. While in FIG. 4, a spacer strip 6 'surrounds the inner tube 4 in a helical shape 5 a ring formed from the spacer bar 6 'around the inner tube 4. It goes without saying that a plurality of rings 6 "" can be arranged distributed around the inner tube 4 (not shown here). It is also not mandatory, only to use a spacer strip 6 'which surrounds the inner tube 4. Two or more spacer strips can also be attached according to the invention.
  • connection can be made by welding at the front 8, which
  • connection can be made by spot welds 9, which are provided at various locations in bores distributed across the circumference and the length of the stator and which penetrate the outer tube 1 and the spacer bar 6 (FIG. 7).
  • the outer tube 1 and the inner tube 4 can be connected to one another by an interference fit.
  • connection techniques mentioned here can also be used if only one inner tube is used, that is to say without the spacer strips 6, 6 'or 6' ', as shown in FIG. 1.
  • the inner tube 4 has elevations 7 which extend outwards, that is to say in the direction of the outer tube 1. These elevations then ensure the desired spacing from the outer tube 1, so that the spacer bar / spacer bars 6 can be omitted.
  • the elastomer material of the lining 2 can then also enclose the inner tube.
  • the spacer strip (s) can also be dispensed with, for example, if the inner tube is designed in a wave shape.
  • FIG. 8 shows such a special embodiment.
  • the wave form of the inner tube 4 continues in the circumferential direction
  • FIG. 9 shows a stator in which the inner tube 4 is deformed in a wave shape in the axial direction.
  • the inner tube is enclosed by the elastomer compound.
  • the waveform could also continue helically around the longitudinal axis of the stator (not shown here).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention concerne un stator pour une pompe à vis sans fin excentrique ou un moteur à vis sans fin excentrique avec un stator, comprenant un tube extérieur, pourvu d'un revêtement en caoutchouc ou en matériau similaire au caoutchouc, et une cavité, formée à la manière d'un taraudage rapide double ou multiple et destinée à recevoir un rotor rigide formé à la manière d'un filetage rapide, le taraudage rapide du stator présentant un pas de plus que le filetage rapide du rotor. L'objectif de cette invention est de fournir un stator capable de fonctionner même dans des conditions où la liaison fixe entre le revêtement et le tube extérieur est détruite p. ex. sous l'effet d'actions chimiques ou de températures élevées. A cet effet, un tube intérieur, pourvu de trous, est placé à l'intérieur du revêtement et des baguettes d'écartement sont placées entre le tube extérieur et le tube intérieur.
EP04803161.1A 2003-11-17 2004-11-17 Stator pour une pompe a vis sans fin excentrique ou un moteur a vis sans fin excentrique selon le principe moineau Expired - Lifetime EP1733147B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/725,967 US7316548B2 (en) 2003-11-17 2003-11-17 Stator for an eccentric screw pump or an eccentric worm motor operating on the Moineau principle
PCT/EP2004/013029 WO2005047701A2 (fr) 2003-11-17 2004-11-17 Stator pour une pompe a vis sans fin excentrique ou un moteur a vis sans fin excentrique selon le principe moineau

Publications (2)

Publication Number Publication Date
EP1733147A2 true EP1733147A2 (fr) 2006-12-20
EP1733147B1 EP1733147B1 (fr) 2016-12-28

Family

ID=34574704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04803161.1A Expired - Lifetime EP1733147B1 (fr) 2003-11-17 2004-11-17 Stator pour une pompe a vis sans fin excentrique ou un moteur a vis sans fin excentrique selon le principe moineau

Country Status (5)

Country Link
US (1) US7316548B2 (fr)
EP (1) EP1733147B1 (fr)
BR (1) BRPI0416634A (fr)
CA (1) CA2473282C (fr)
WO (1) WO2005047701A2 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005308210A (ja) * 2004-03-26 2005-11-04 Hitachi Metals Ltd フレキシブル管
US7407372B2 (en) 2004-05-14 2008-08-05 Robbins & Myers Energy Systems L.P. Progressing cavity pump or motor
US9163629B2 (en) 2006-07-31 2015-10-20 Schlumberger Technology Corporation Controlled thickness resilient material lined stator and method of forming
US7739792B2 (en) * 2006-07-31 2010-06-22 Schlumberger Technology Corporation Method of forming controlled thickness resilient material lined stator
RU2402693C1 (ru) * 2009-03-10 2010-10-27 Открытое акционерное общество "Павловский машзавод" Одновинтовая гидравлическая машина
RU2402692C1 (ru) * 2009-03-10 2010-10-27 Открытое акционерное общество "Павловский машзавод" Одновинтовая гидромашина
BR112012003882A2 (pt) 2009-08-21 2016-03-29 Titeflex Corp tubo dissipador de energia, métodos de fabricação de tubulação dissipadora de energia, método de instalação e dispositivos de vedação de um tubo dissipador de energia
GB2481226A (en) * 2010-06-16 2011-12-21 Nat Oilwell Varco Lp Stator for a progressive cavity (PC) pump or motor
WO2012024215A2 (fr) 2010-08-16 2012-02-23 National Oilwell Varco, L.P. Stators renforcés et procédés de fabrication
US8944789B2 (en) 2010-12-10 2015-02-03 National Oilwell Varco, L.P. Enhanced elastomeric stator insert via reinforcing agent distribution and orientation
GB2499613B (en) 2012-02-22 2017-11-01 Nat Oilwell Varco Lp Stator for progressive cavity pump/motor
DE102012112044B4 (de) * 2012-05-04 2015-10-08 Netzsch Pumpen & Systeme Gmbh Selbstfixierendes Statorgehäuse
DE102012012076A1 (de) 2012-06-13 2013-12-19 Arnold Jäger Holding GmbH Stator einer Exzenterschneckenpumpe
RU2516094C2 (ru) * 2012-08-06 2014-05-20 Открытое акционерное общество Научно-производственное объединение "Искра" Статор одновинтового насоса
WO2014138068A1 (fr) 2013-03-05 2014-09-12 Schlumberger Canada Limited Procédé et appareil de fabrication d'un moteur ou pompe à cavité progressive
US9541225B2 (en) 2013-05-09 2017-01-10 Titeflex Corporation Bushings, sealing devices, tubing, and methods of installing tubing
EP3108142B1 (fr) 2014-02-18 2017-11-15 Vert Rotors UK Limited Machine volumétrique rotative
WO2015126955A2 (fr) 2014-02-18 2015-08-27 Reme Technologies, Llc Stator élastomère amélioré par incorporation de graphène
CN106685152B (zh) * 2015-11-10 2019-03-12 耐驰（兰州）泵业有限公司 制造用于偏心螺杆泵的可液压调整的定子的方法
RU2646664C1 (ru) * 2017-06-22 2018-03-06 Михаил Валерьевич Шардаков Статор винтовой гидромашины, устройство и способ для изготовления его внутренней зубчатой оболочки
JP7138383B1 (ja) * 2022-01-18 2022-09-16 兵神装備株式会社 一軸偏心ねじポンプ

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2250263C3 (de) 1972-10-13 1978-09-28 Gummi-Jaeger Kg Gmbh & Cie, 3000 Hannover Nachstellbarer Stator für Exzenterschneckenpumpen
DE2541779A1 (de) * 1975-09-19 1977-03-31 Allweiler Ag Stator fuer exzenterschneckenpumpen
US4313717A (en) * 1979-10-04 1982-02-02 Kopecky Eugene F Adjustable pressure extrusion pump
DE3119568A1 (de) * 1981-05-16 1982-12-02 Big Dutchman (International) AG, 8090 Wezep Exzenterschneckenpumpe
DE3322095A1 (de) * 1983-06-20 1984-12-20 Gummi-Jäger KG GmbH & Cie, 3000 Hannover Stator fuer exzenterschneckenpumpen
JPS61180512A (ja) * 1986-01-21 1986-08-13 日立電線株式会社 直接冷却型電力ケーブル線路の構成方法
US5171138A (en) * 1990-12-20 1992-12-15 Drilex Systems, Inc. Composite stator construction for downhole drilling motors
DE4134853C1 (fr) * 1991-05-22 1992-11-12 Netzsch-Mohnopumpen Gmbh, 8264 Waldkraiburg, De
US5171139A (en) * 1991-11-26 1992-12-15 Smith International, Inc. Moineau motor with conduits through the stator
DE4403598A1 (de) * 1994-02-07 1995-08-10 Arnold Jaeger Exzenterschneckenpumpe
DE19801020A1 (de) * 1998-01-14 1999-07-22 Artemis Kautschuk Kunststoff Elastomerstator für Exzenterschneckenpumpen
DE19842754C2 (de) 1998-09-18 2001-04-26 Seepex Seeberger Gmbh & Co Exzenterschneckenpumpe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005047701A2 *

Also Published As

Publication number Publication date
CA2473282C (fr) 2010-04-13
US20050106004A1 (en) 2005-05-19
US7316548B2 (en) 2008-01-08
EP1733147B1 (fr) 2016-12-28
CA2473282A1 (fr) 2005-05-17
WO2005047701A3 (fr) 2005-07-07
WO2005047701A2 (fr) 2005-05-26
BRPI0416634A (pt) 2007-01-16

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