EP0844397B1 - Exzeuterschneckenpumpe - Google Patents

Exzeuterschneckenpumpe Download PDF

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Publication number
EP0844397B1
EP0844397B1 EP97402779A EP97402779A EP0844397B1 EP 0844397 B1 EP0844397 B1 EP 0844397B1 EP 97402779 A EP97402779 A EP 97402779A EP 97402779 A EP97402779 A EP 97402779A EP 0844397 B1 EP0844397 B1 EP 0844397B1
Authority
EP
European Patent Office
Prior art keywords
stator
rotor
gear pump
pump according
steel
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.)
Expired - Lifetime
Application number
EP97402779A
Other languages
English (en)
French (fr)
Other versions
EP0844397A1 (de
Inventor
Jean-Paul Papin
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.)
PCM Pompes
Original Assignee
PCM Pompes
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9497865&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0844397(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by PCM Pompes filed Critical PCM Pompes
Publication of EP0844397A1 publication Critical patent/EP0844397A1/de
Application granted granted Critical
Publication of EP0844397B1 publication Critical patent/EP0844397B1/de
Anticipated expiration legal-status Critical
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity
    • F05C2251/044—Expansivity similar

Definitions

  • the present invention relates to improvements brought to gear pumps, or Moineau pumps, comprising two internal helical gears, one to the other, the internal helical gear which is rotating (rotor) having one tooth less than the helical gear which is fixed (stator).
  • Document GB 2 120 729 A shows such a helical gear pump.
  • the rotor is made of high strength steel, coated with chrome to withstand abrasion; he is suspended at the end of a drill string which drives it in rotation.
  • the stator is made of molded elastomer encased in a steel tube; it hangs at the end of a train of tubes surrounding the above-mentioned train of rods. The seal between rotor and stator is obtained by giving the rotor slightly larger than the minimum diameter of the stator.
  • the pumps thus constituted give full satisfaction in pumping wells where the temperature does not exceed about 140 ° C.
  • the object of the invention is essentially to remedy to this disadvantage and to propose an improved arrangement Sparrow pump clean to operate correctly in a wide temperature range which can extend up to temperature significantly above 140 ° C, which is therefore usable in particular for oil extraction in wells deep.
  • a gear pump or Moineau pump improved arrangement in accordance with the invention includes the provisions set out in the characterizing part of claim 1 below.
  • the improved arrangement according to the invention is based on the fact that, due to the appropriate choice of constituent materials respectively of the rotor and the stator, the transverse and longitudinal dimensions of the rotor and the transverse and longitudinal dimensions respectively of the stator cavity move in the same direction and of same order of magnitude during thermal variations (i.e. that the transverse dimension of the rotor and the dimension transverse of the stator cavity increase significantly of the same order of magnitude when the temperature increases and decreases by roughly the same order of magnitude when the temperature decreases).
  • the pump therefore remains functionally operational in the presence of ambient thermal variations when the rotor and stator are made of respective materials having coefficients of thermal expansion such that a predetermined functional clearance between rotor and stator is kept approximately over a wide range of temperature, ranging from around 15 ° C (room temperature rotor assembly in the stator in the workshop) up to a ambient temperature during operation of the order of 300 ° C.
  • the operational temperature range of the pump can be from about 40 ° C to about 250 ° C.
  • stator the two materials constituting the stator and the rotor respectively, so that the game is kept approximately constant between rotor and stator, have expansion coefficients thermal of the same order of magnitude, even relatively neighbors.
  • the rotor being metallic for possess sufficient mechanical strength it is desirable that the stator is also metallic.
  • the material of the rotor and the material of the stator are chosen so as to be compatible mechanically vis-à-vis friction problems and wear, and are therefore selected in accordance with the rules known to those skilled in the art.
  • a pair of preferentially suitable materials in the context of the invention is formed by 316 L steel, whose coefficient of linear thermal expansion is 16.5 x 10 -6 mm / ° / mm, to form the rotor and bronze UE7 Pb6 Z4, whose coefficient of linear thermal expansion is 17 x 10 -6 mm / ° / mm, to form the stator.
  • a privileged (although not exclusive) area of use a gear pump or sparrow pump arranged in accordance to the invention resides in petroleum extraction in deep well, with an ambient temperature at the bottom of wells can vary from about 40 ° C to about 250 ° C.

Landscapes

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

Claims (6)

  1. Zahnradpumpe oder Moineau-Pumpe mit zwei ineinander angeordneten schraubenförmigen Zahnrädern, wobei das innere schraubenförmige Zahnrad, das rotierend ist (Rotor), einen Zahn weniger als das äußere schraubenförmige Zahnrad, das feststehend ist (Stator), besitzt, dadurch gekennzeichnet, daß der Rotor und der Stator jeweils aus mechanisch kompatiblen Werkstoffen bestehen, die aus Stahl Z 3 OC 13, Stahl 316L, Gußeisen FGS 415, Gußeisen FGS Ni 20, Gußeisen FGS Ni 30 Crl und Bronze UE 7 Pb 6Z4 ausgewählt sind, die jeweils Wärmeausdehnungskoeffizienten besitzen, die jeweils zu solchen Ausdehnungen des Rotors und des Stators führen, daß zwischen dem Rotor und dem Stator in einem Umgebungstemperaturbereich zwischen etwa 15°C und 300°C ein annähernd konstantes Spiel aufrecht erhalten wird.
  2. Zahnradpumpe nach Anspruch 1, dadurch gekennzeichnet, daß der Rotor aus Stahl 316L und der Stator aus Spezialbronze UE 7 Pb 6Z4 besteht.
  3. Zahnradpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das im wesentliche konstante Spiel zwischen dem Rotor und dem Stator in einem Temperaturbereich von etwa 40°C bis etwa 250°C aufrecht erhalten wird.
  4. Zahnradpumpe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Stator durch äußere Komprimierung eines massiven Teils um einen Stempel herum, der das endgültige Profil der Innenform des Stators besitzt, hergestellt ist.
  5. Zahnradpumpe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Stator aus Elementen besteht, die einzeln durch Rolldrücken erhalten wurden und miteinander durch Muffen verbunden sind.
  6. Verwendung einer Zahnradpumpe nach einem der Ansprüche 1 bis 5 für die Extraktion von Erdölprodukten im Tiefschacht.
EP97402779A 1996-11-21 1997-11-19 Exzeuterschneckenpumpe Expired - Lifetime EP0844397B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9614227 1996-11-21
FR9614227A FR2756018B1 (fr) 1996-11-21 1996-11-21 Pompe a engrenages helicoidaux

Publications (2)

Publication Number Publication Date
EP0844397A1 EP0844397A1 (de) 1998-05-27
EP0844397B1 true EP0844397B1 (de) 2003-05-14

Family

ID=9497865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97402779A Expired - Lifetime EP0844397B1 (de) 1996-11-21 1997-11-19 Exzeuterschneckenpumpe

Country Status (8)

Country Link
US (1) US6082980A (de)
EP (1) EP0844397B1 (de)
AR (1) AR010071A1 (de)
AT (1) ATE240459T1 (de)
CA (1) CA2221487C (de)
DE (1) DE69721943T2 (de)
ES (1) ES2198539T3 (de)
FR (1) FR2756018B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011086014A1 (de) 2011-11-09 2013-05-16 Bayerische Motoren Werke Aktiengesellschaft Antriebssystem für ein Kraftfahrzeug mit einem temperaturgesteuerten Dämpfungselement
DE102011086013A1 (de) 2011-11-09 2013-05-16 Bayerische Motoren Werke Aktiengesellschaft Antriebssystem für ein Kraftfahrzeug mit einer Dämpfungseinrichtung
DE102011086008A1 (de) 2011-11-09 2013-05-16 Bayerische Motoren Werke Aktiengesellschaft Antriebssystem für ein Kraftfahrzeug mit einem steuerbaren Dämpfungselement

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10141863A1 (de) * 2000-08-28 2002-03-14 Dana Corp Hydraulische Verdrängerpumpe
FR2826407B1 (fr) * 2001-06-21 2004-04-16 Pcm Pompes Stator de pompe moineau et procede pour sa fabrication
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
DE102008036511B4 (de) 2008-08-05 2015-04-30 Netzsch Pumpen & Systeme Gmbh Exzenterschneckenpumpe
US8523545B2 (en) * 2009-12-21 2013-09-03 Baker Hughes Incorporated Stator to housing lock in a progressing cavity pump
ES2630365T3 (es) 2014-09-16 2017-08-21 Netzsch Pumpen & Systeme Gmbh Estator para una bomba helicoidal excéntrica, bomba helicoidal excéntrica y procedimiento para fabricar un estator
US10184462B2 (en) 2015-11-06 2019-01-22 Caterpillar Inc. Drive assembly and pump assembly arrangement for cryogenic pump

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622254A (en) * 1969-06-20 1971-11-23 Precision Scient Co Pump
US4008015A (en) * 1975-11-03 1977-02-15 Eaton Corporation Rotor-stator gear set
JPS5379108A (en) * 1976-12-24 1978-07-13 Toyota Motor Corp Rotor housing for a rotary engine
GB2120729B (en) * 1982-05-21 1985-07-24 Mono Pumps Ltd Helical gear pump
FR2617534A1 (fr) * 1987-06-30 1989-01-06 Inst Francais Du Petrole Dispositif de pompage d'un fluide dans le fond d'un puits
US5772418A (en) * 1995-04-07 1998-06-30 Tochigi Fuji Sangyo Kabushiki Kaisha Screw type compressor rotor, rotor casting core and method of manufacturing the rotor
US5876192A (en) * 1996-11-08 1999-03-02 Ford Global Technologies, Inc. Differential expansion control assembly for a pump
US5797734A (en) * 1996-11-26 1998-08-25 Chrysler Corporation Pump for hot and cold fluids

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011086014A1 (de) 2011-11-09 2013-05-16 Bayerische Motoren Werke Aktiengesellschaft Antriebssystem für ein Kraftfahrzeug mit einem temperaturgesteuerten Dämpfungselement
DE102011086013A1 (de) 2011-11-09 2013-05-16 Bayerische Motoren Werke Aktiengesellschaft Antriebssystem für ein Kraftfahrzeug mit einer Dämpfungseinrichtung
DE102011086008A1 (de) 2011-11-09 2013-05-16 Bayerische Motoren Werke Aktiengesellschaft Antriebssystem für ein Kraftfahrzeug mit einem steuerbaren Dämpfungselement
DE102011086014B4 (de) * 2011-11-09 2021-02-25 Bayerische Motoren Werke Aktiengesellschaft Antriebssystem für ein Kraftfahrzeug mit einem temperaturgesteuerten Dämpfungselement
DE102011086008B4 (de) * 2011-11-09 2021-02-25 Bayerische Motoren Werke Aktiengesellschaft Antriebssystem für ein Kraftfahrzeug mit einem steuerbaren Dämpfungselement

Also Published As

Publication number Publication date
EP0844397A1 (de) 1998-05-27
AR010071A1 (es) 2000-05-17
CA2221487C (en) 2004-09-28
US6082980A (en) 2000-07-04
DE69721943D1 (de) 2003-06-18
ATE240459T1 (de) 2003-05-15
FR2756018A1 (fr) 1998-05-22
FR2756018B1 (fr) 1999-01-22
CA2221487A1 (en) 1998-05-21
ES2198539T3 (es) 2004-02-01
DE69721943T2 (de) 2004-02-19

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