EP2998584B1 - Stator pour une pompe à vis excentrique, pompe à vis excentrique et procédé de fabrication d'un stator - Google Patents

Stator pour une pompe à vis excentrique, pompe à vis excentrique et procédé de fabrication d'un stator Download PDF

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Publication number
EP2998584B1
EP2998584B1 EP14184955.4A EP14184955A EP2998584B1 EP 2998584 B1 EP2998584 B1 EP 2998584B1 EP 14184955 A EP14184955 A EP 14184955A EP 2998584 B1 EP2998584 B1 EP 2998584B1
Authority
EP
European Patent Office
Prior art keywords
stator
core
housing
stator core
temperature
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.)
Active
Application number
EP14184955.4A
Other languages
German (de)
English (en)
Other versions
EP2998584A1 (fr
Inventor
Johann Kreidl
Walter Reisinger
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.)
3 S Schnecken and Spindeln and Spiralen Bearbeitungsge
Netzsch Pumpen and Systeme GmbH
Original Assignee
3 S Schnecken and Spindeln and Spiralen Bearbeitungsgesellschaft Mbh
Netzsch Pumpen and Systeme 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
Priority to EP14184955.4A priority Critical patent/EP2998584B1/fr
Application filed by 3 S Schnecken and Spindeln and Spiralen Bearbeitungsgesellschaft Mbh, Netzsch Pumpen and Systeme GmbH filed Critical 3 S Schnecken and Spindeln and Spiralen Bearbeitungsgesellschaft Mbh
Priority to ES14184955.4T priority patent/ES2630365T3/es
Priority to US15/512,004 priority patent/US10563651B2/en
Priority to RU2017113004A priority patent/RU2017113004A/ru
Priority to PCT/EP2015/067936 priority patent/WO2016041686A1/fr
Priority to CN201580049771.2A priority patent/CN106715908B/zh
Priority to JP2017515817A priority patent/JP2017528648A/ja
Priority to AU2015317188A priority patent/AU2015317188A1/en
Priority to KR1020177009884A priority patent/KR20170056619A/ko
Publication of EP2998584A1 publication Critical patent/EP2998584A1/fr
Application granted granted Critical
Publication of EP2998584B1 publication Critical patent/EP2998584B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0065—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
    • 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
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • 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
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • 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
    • F04C2240/00—Components
    • F04C2240/10—Stators
    • F04C2240/102—Stators with means for discharging condensate or liquid separated from the gas pumped
    • 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
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings

Definitions

  • the present invention relates to a stator for an eccentric screw pump, an eccentric screw pump and a method for producing a stator according to the features of the preamble of claims 1, 5 and 7.
  • Eccentric screw pumps are pumps for pumping a large number of media, in particular viscous, highly viscous and abrasive media such as sludges, liquid manure, crude oil and fats.
  • Progressing cavity pumps known from the prior art are formed from a rotor and a stator, the rotor being accommodated in the stator and moving eccentrically in the stator.
  • the stator is formed by a housing with a spiral-shaped inside. From the movement of the rotor and mutual conditioning between the stator and rotor moving conveyor chambers are formed, by means of which liquid media can be transported along the stator.
  • the rotor performs an eccentric rotational movement about the stator axis or about the longitudinal axis of the eccentric screw pump.
  • the outer screw ie the stator
  • the rotor screw is designed to be catchy in this case.
  • Multi-speed versions work on the same kinematic principle.
  • progressing cavity pumps are suitable for conveying water, petroleum and a large number of other liquids.
  • the shape of the delivery chambers is constant during the movement of the rotor within the stator, so that the pumped medium is not crushed.
  • a suitable design not only fluids but also solids can be conveyed with progressing cavity pumps.
  • the rotor is usually made of a highly abrasion resistant material such as steel.
  • the stator for many applications of an elastic material, for example rubber.
  • the elastomer is vulcanized in a designated as a stator jacket tubular metal housing.
  • stators are preferred which have a cylindrical outer shell shape.
  • US 2009/0110578 A1 a split stator having at least two radially separable stator parts. If one of these stator parts removed, then the arranged in the stator rotor and / or the interior of the stator is at least partially accessible.
  • DE 3902740 C2 describes the manufacture of a stator by means of machining.
  • partial segments of the inner hole profile of the stator to be formed are used as outer processing surfaces on rod-like blanks customary machining action.
  • the blanks are then divided in the direction of their longitudinal axes in each case in a predetermined number of sections in such a way that each section has a sub-segment of the inner hole profile, and these sections are then assembled together so that the sub-segments complement each other to the complete inner hole profile of the stator.
  • the object of the invention is to provide a stator for an eccentric screw pump or an eccentric screw pump with a stator, wherein the stator consists of a stator core made of a first temperature-resistant material and is fixed in a stator shell.
  • stator for an eccentric screw pump an eccentric screw pump and a method for producing a stator comprising the features in claims 1, 5 and 7. Further advantageous embodiments are described by the subclaims.
  • the invention relates to a stator for an eccentric screw pump or an eccentric screw pump with a corresponding stator.
  • the stator has an inner cavity with a spiral-shaped inner contour for receiving a rotor.
  • moving conveyor spaces for transporting conveyed material are formed by the movement of the rotor in the inner cavity of the stator between the rotor and the inner contour of the stator.
  • the stator comprises a stator core arranged in a stator jacket.
  • the stator core consists of at least two radially separable core parts.
  • the at least two radially separable core parts each consist of a metallic material or a technical ceramic material, ie of a material which is also resistant to material in a higher temperature range, for example at temperatures around 300 ° C and a enables reliable operation of an eccentric screw pump with such a stator.
  • Technical ceramics are ceramics whose properties have been optimized for technical applications. It differs from the decorative ceramics or dishes, tiles or sanitary objects, among other things, by the purity and the closer tolerated grain size of their starting materials and often by special combustion processes. Depending on the manufacturing process, technical ceramics may have quite different material properties.
  • the stator jacket is formed by a stator tube made of a metallic material and is shrunk onto the stator core.
  • the stator jacket is fixed to the stator core without using an adhesive or the like.
  • the core parts each have a partial inner contour.
  • the partial inner contours of the at least two core parts form the inner contour of the stator core.
  • the correspondingly formed part inner contour is preferably introduced into the respective core part by multi-axis form milling or another suitable method such that the core parts assembled to form the stator core form the inner contour of the stator core.
  • the stator core is divided in a plane comprising the central stator longitudinal axis, that is, the stator core is formed by two equal sized core parts.
  • At least one first core part has at least one positioning pin on a contact surface with the at least one second core part. Furthermore, the at least one second core part has, at a corresponding position of a contact surface with the at least one first core part, at least one corresponding recess for receiving the positioning pin.
  • These positioning means serve in particular for the partial inner contours of the core parts to be associated with one another in such a way that the inner contour of the stator core is formed. It is important that to the Contact areas, the partial inner contours adjacent to each other such that no offset of the partial inner contours is formed against each other, which would interfere with the movement of the rotor.
  • the at least two core parts are joined together in such a way that the at least one positioning pin of the at least one first core part engages in the at least one corresponding recess of the at least one second core part with as little clearance as possible.
  • the stator core composed of at least two core parts before shrinking the stator jacket at an ambient temperature in a temperature range between 5 ° C to 25 ° C in an area of an outer circumferential surface has an outer circumference which is at least slightly greater than the inner circumference of Statormantels at the specified ambient temperature.
  • the invention further relates to a method for producing a stator described above.
  • This is made of a stator core made of a metallic material or a technical ceramic material and a stator shell made of a metallic material.
  • a stator tube forming the stator jacket is shrunk onto the stator core, that is to say the fixing of the stator core in the stator jacket does not require additional connecting and / or adhesive means.
  • the stator core composed of at least two core parts and pinned is cooled to a first temperature.
  • the material from which the stator core is formed contracts, so that the outer circumference of the cooled stator core is smaller than the outer circumference of the stator core at a normal ambient temperature of about 5 ° C to 25 ° C.
  • the outer circumference of the cooled stator core is smaller than the inner circumference of the stator shell at an ambient temperature in the aforementioned temperature range.
  • the cooled stator core is inserted into the stator case, taking care that the radial distance between the stator core and the stator jacket is the same everywhere. Due to the temperature compensation between the stator core and the stator shell and / or by adapting the stator core and stator shell to the ambient temperature, the stator core shrinks into the stator shell.
  • the stator core consisting of at least two composite core parts is cooled to a first temperature.
  • the stator jacket is heated to a second temperature.
  • the material of the stator jacket is selected such that the inner circumference of the stator jacket increases as a result of the heating.
  • the second outer circumference of the cooled stator core is at least slightly smaller than the inner circumference of the heated stator shell.
  • the cooled stator core is inserted into the heated stator shell, taking care that the radial distance between the cooled stator core and the heated stator shell is the same everywhere. Due to the temperature compensation between the cooled stator core and the heated stator jacket and / or by adapting the stator core and stator jacket to the ambient temperature, the stator jacket is shrunk onto the stator core.
  • the stator core is cooled to a first temperature in a first temperature range between -50 ° C and -250 ° C.
  • the stator core is cooled in liquid nitrogen to a first temperature of about -200 ° C.
  • the stator jacket is heated to a second temperature in a second temperature range between 35 ° C and 150 ° C.
  • the method may comprise, as an alternative or in addition to the described features, one or more features and / or properties of the device described above.
  • the device may alternatively or additionally comprise one or more features and / or properties of the described method.
  • the stator according to the invention is particularly suitable for use in progressing cavity pumps for conveying oil-gas-water mixtures at ambient and conveying medium temperatures of more than 150 ° C, for example in boreholes or the like.
  • stator core allows more precise manufacturing. In addition, better with corresponding progressing cavity pumps Efficiencies are achieved because a narrower and more uniform gap between the stator and rotor is possible. In addition, stators made of a metallic material or a technical ceramic have lower wear problems compared to stators with an elastomer core.
  • FIGS. 1A and B show schematic views of the essential components of a stator 1 according to the invention prior to assembly of the stator 1 (see FIG. 2) and FIG. 2 shows a schematic view of a stator 1 produced according to the invention.
  • Figure 1A shows two core parts 3a, 3b, which together form a stator core 2.
  • the stator core 2 has a substantially cylindrical outer jacket 6 is formed.
  • the core parts 3a, 3b each have a partial contour 8a, 8b, which form the inner contour 7 of the stator 1 after the combination of the core parts 3a, 3b (see FIG FIG. 2 ).
  • the partial contours 8a, 8b are manufactured by multi-axis form milling with high precision. It is important here that the two core parts 3a, 3b have a common reference point.
  • the one core part 3a comprises at its contact surfaces 5a to the second core part 3b two dowel pins 9-1, 9-2 and the second core part 3b has at corresponding positions of its contact surfaces 5b to the first core part 3a two pin receptacles 10-1, 10-2.
  • the two core parts 3a, 3b are joined together and pinned together by means of the dowel pins 9-1, 9-2 and pin receptacles 10-1, 10-2 in position.
  • FIG. 1B shows a stator shell 4, for example a steel pipe.
  • the core parts 3a, 3b are made oversized, that is, the pinned core parts 3a, 3b form a stator core 2, which has an outer circumference in the uninstalled state, which is greater than the inner circumference of the tubular stator shell 4th
  • FIG. 3 schematically show the method steps for producing a stator 1 according to the invention.
  • the components of the stator in particular the stator core 2 composed of at least two core parts 3 and the stator jacket 4, have the ambient temperature T (U) (cf. FIG. 3A ).
  • a first method step I the pinned stator core 2 is cooled by removing Q1 from this heat, whereby the stator core is cooled to a first temperature T (1) which is below the ambient temperature T (U).
  • T (1) which is below the ambient temperature T (U).
  • the pinned stator core 2 is cooled by means of liquid nitrogen to about -200 ° C.
  • the material constituting the core parts 3 of the stator core 2 contracts, so that the outer circumference of the stator core 2 T (1) cooled to the first temperature T (1) is smaller than the outer circumference of the stator core 2 Stator core 2 at normal ambient temperature T (U).
  • stator jacket 4 is heated by supplying heat Q2 to a second temperature T (2).
  • the stator shell 4 expands.
  • the material of the stator jacket 4 is selected such that the inner circumference of the stator jacket 4 is increased by the heating.
  • the outer periphery of the first temperature T (1) cooled stator core 2 T (1) is less than the inner circumference of the heated stator casing 4 T (2).
  • stator core 2 T (1) is inserted into the stator jacket 4 T (2) (see FIG. 4C) and positioned, whereby it is ensured that the radial distance between stator core 2 T (1) and stator jacket 4 T (2) is the same everywhere
  • a continuous heat exchange between stator core 2 and stator shell 4 leads to a temperature compensation between the stator core 2 and the stator shell 4, as a result of which the stator shell 4 shrinks onto the stator core 2.
  • a permanently fixed connection between the stator core 2 and the stator shell 4 is thus produced.
  • This permanent solid compound is particularly in the temperature fluctuations between 15 ° C to 300 ° C during operation of an eccentric screw pump with a stator 1 resistant because no adhesives are used, which can cause problems at high temperatures.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Claims (14)

  1. Stator (1) pour une pompe à vis excentrique, comprenant une cavité intérieure ayant un contour intérieur (7) spiralé de façon hélicoïdale et destinée à loger un rotor, dans lequel le stator (1) comprend un noyau de stator (2) disposé à l'intérieur d'une chemise de stator (4), dans lequel le noyau de stator (2) se compose d'au moins deux parties de noyau (3a, 3b) radialement séparables, dans lequel lesdites au moins deux parties de noyau (3a, 3b) radialement séparables sont réalisées chacune dans un matériau métallique ou un matériau céramique technique, que la chemise de stator (4) est formée par un tube de stator en un matériau métallique et caractérisé par le fait que la chemise de stator (4) est frettée sur le noyau de stator (2) ou bien que le noyau de stator (2) est fretté dans la chemise de stator (4).
  2. Stator (1) selon la revendication 1, dans lequel les parties de noyau (3a, 3b) présentent chacune un contour intérieur partiel (8a, 8b) et dans lequel les contours intérieurs partiels (8a, 8b) desdites au moins deux parties de noyau (3a, 3b) forment le contour intérieur (7) du noyau de stator (2) dans le noyau de stator (2) assemblé.
  3. Stator (1) selon la revendication 1 ou 2, dans lequel au moins une première partie de noyau (3a) présente, sur une surface de contact (5a) vers au moins une deuxième partie de noyau (3b), au moins une broche de positionnement (9-1), et dans lequel ladite au moins une deuxième partie de noyau (3b) présente, sur une position correspondante d'une surface de contact (5b) vers ladite au moins une première partie de noyau (3a), au moins un creux correspondant (10-1) destiné à recevoir ladite broche de positionnement (9).
  4. Stator (1) selon l'une quelconque des revendications précédentes, dans lequel, avant le frettage de la chemise de stator (4) ou bien avant le frettage dans la chemise de stator (4), le noyau de stator (2) composé d'au moins deux parties de noyau (3a, 3b) présente, à une température ambiante (T(U)) comprise entre 5 °C et 25 °C, une circonférence extérieure qui est au moins légèrement plus grande que la circonférence intérieure de la chemise de stator (4) à une température ambiante (T(U)) dans une plage comprise entre 5 °C à 25 °C.
  5. Pompe à vis excentrique comprenant un stator (1) selon la revendication 1, dans laquelle des espaces de transport migrant en fonctionnement de la pompe à vis excentrique et destinés à transporter de la matière à transporter sont formés par le rotor et le stator (1).
  6. Pompe à vis excentrique selon la revendication 5, comprenant un stator (1) selon la revendication 2 à 4.
  7. Procédé de réalisation d'un stator (1) se composant d'un noyau de stator (2) disposé à l'intérieur d'une chemise de stator (4), ledit noyau de stator (2) comprenant une cavité intérieure ayant un contour intérieur (7) spiralé de façon hélicoïdale et destinée à loger un rotor, dans lequel le noyau de stator (2) se compose d'au moins deux parties de noyau (3a, 3b) radialement séparables, caractérisé par le fait que lesdites au moins deux parties de noyau (3a, 3b) radialement séparables du noyau de stator (2) sont réalisées dans un matériau métallique ou un matériau céramique technique, que la chemise de stator (4) est réalisée en tant que tube de stator en un matériau métallique et que la chemise de stator (4) est frettée sur le noyau de stator (2) ou bien que le noyau de stator (2) est fretté dans la chemise de stator (4).
  8. Procédé selon la revendication 7, dans lequel le noyau de stator (2) est réalisé à partir de deux parties de noyau (3a, 3b) qui sont divisées par un plan à travers l'axe longitudinal central de stator.
  9. Procédé selon la revendication 7 ou 8, dans lequel un contour intérieur partiel (8a, 8b) formé de manière correspondante est réalisé dans les parties de noyau (3a, 3b) respectives par un fraisage de forme multiaxial de telle manière que les parties de noyau (3a, 3b) assemblées pour former le noyau de stator (2) forment le contour intérieur (7) du noyau de stator (2).
  10. Procédé selon l'une quelconque des revendications 7 à 9, dans lequel au moins une broche de positionnement (9-1) est montée sur au moins une première partie de noyau (3a), sur une surface de contact (5a) vers au moins une deuxième partie de noyau (3b), et dans lequel au moins un creux correspondant (10-1) destiné à recevoir ladite broche de positionnement (9-1) est ménagé sur au moins une deuxième partie de noyau (3b), sur une position correspondante d'une surface de contact (5b) vers ladite au moins une première partie de noyau (3a), dans lequel lesdites au moins deux parties de noyau (3a, 3b) sont assemblées de telle sorte que ladite au moins une broche de positionnement (9-1) de ladite au moins une première partie de noyau (3a) s'engage dans ledit au moins un creux correspondant (10-1) de ladite au moins une deuxième partie de noyau (3b).
  11. Procédé selon l'une quelconque des revendications 7 à 10, dans lequel, avant le frettage dans la chemise de stator (4), le noyau de stator (2) composé d'au moins deux parties de noyau (3a, 3b) présente, à une température ambiante (T(U)) comprise entre 5 °C et 25 °C, une première circonférence extérieure qui est au moins légèrement plus grande que la circonférence intérieure de la chemise de stator (4) à une température ambiante (T(U)) comprise entre 5 °C et 25 °C, dans lequel le noyau de stator (2) composé d'au moins deux parties de noyau (3a, 3b) est refroidi à une première température (T(1)), dans lequel le noyau de stator refroidi (2T(1)) présente, à la première température (T(1)), une deuxième circonférence extérieure qui est au moins légèrement plus petite que la circonférence intérieure de la chemise de stator (4), dans lequel le noyau de stator refroidi (2T(1)) est inséré dans la chemise de stator (4) de sorte que la distance radiale entre le noyau de stator refroidi (2T(1)) et la chemise de stator (4) est partout identique, dans lequel le noyau de stator (2T(1)) est fretté dans la chemise de stator (4) par un équilibrage de température entre le noyau de stator (2T(1)) et la chemise de stator (4) et/ou par une adaptation à une température ambiante (T(U)).
  12. Procédé selon l'une quelconque des revendications 7 à 10, dans lequel, avant le frettage de la chemise de stator (4), le noyau de stator (2) composé d'au moins deux parties de noyau (3a, 3b) présente, à une température ambiante (T(U)) comprise entre 5 °C et 25 °C, une première circonférence extérieure qui est au moins légèrement plus grande que la circonférence intérieure de la chemise de stator (4) à une température ambiante (T(U)) comprise entre 5 °C et 25 °C, dans lequel le noyau de stator (2) composé d'au moins deux parties de noyau (3a, 3b) est refroidi à une première température (T(1)) et dans lequel la chemise de stator (4) est chauffée à une deuxième température (T(2)), dans lequel le noyau de stator refroidi (2T(1)) présente, à la première température (T(1)), une deuxième circonférence extérieure qui est au moins légèrement plus petite que la circonférence intérieure de la chemise de stator chauffée (4T(2)), dans lequel le noyau de stator refroidi (2T(1)) est inséré dans la chemise de stator chauffée (4T(2)) de sorte que la distance radiale entre le noyau de stator refroidi (2T(1)) et la chemise de stator chauffée (4T(2)) est partout identique, dans lequel la chemise de stator (4) est frettée sur le noyau de stator (2) par l'équilibrage de température entre le noyau de stator (2) et la chemise de stator (4) et/ou par un refroidissement à une température ambiante (T(U)).
  13. Procédé selon la revendication 11 ou 12, dans lequel le noyau de stator (2) est refroidi à une première température (T(1)) dans une première plage de températures comprise entre -50 °C et -250 °C et/ou dans lequel la chemise de stator (4) est chauffée à une deuxième température (T(2)) dans une deuxième plage de températures comprise entre 35 °C et 150 °C.
  14. Procédé selon l'une quelconque des revendications 11 à 13, dans lequel le noyau de stator (2) est refroidi au moyen de l'azote liquide à une première température (T(1)) de -200 °C à peu près.
EP14184955.4A 2014-09-16 2014-09-16 Stator pour une pompe à vis excentrique, pompe à vis excentrique et procédé de fabrication d'un stator Active EP2998584B1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
ES14184955.4T ES2630365T3 (es) 2014-09-16 2014-09-16 Estator para una bomba helicoidal excéntrica, bomba helicoidal excéntrica y procedimiento para fabricar un estator
EP14184955.4A EP2998584B1 (fr) 2014-09-16 2014-09-16 Stator pour une pompe à vis excentrique, pompe à vis excentrique et procédé de fabrication d'un stator
RU2017113004A RU2017113004A (ru) 2014-09-16 2015-08-04 Статор для одновинтового насоса, одновинтовой насос и способ изготовления статора
PCT/EP2015/067936 WO2016041686A1 (fr) 2014-09-16 2015-08-04 Stator pour une pompe à vis sans fin excentrique, pompe à vis sans fin excentrique et procédé de fabrication d'un stator
US15/512,004 US10563651B2 (en) 2014-09-16 2015-08-04 Stator for an eccentric screw pump, an eccentric screw pump and a method for producing a stator
CN201580049771.2A CN106715908B (zh) 2014-09-16 2015-08-04 用于偏心螺杆泵的定子、偏心螺杆泵和制造定子的方法
JP2017515817A JP2017528648A (ja) 2014-09-16 2015-08-04 偏心ねじポンプ用のステータ、偏心ねじポンプ、及びステータの製造方法
AU2015317188A AU2015317188A1 (en) 2014-09-16 2015-08-04 Stator for an eccentric screw pump, eccentric screw pump and method for producing a stator
KR1020177009884A KR20170056619A (ko) 2014-09-16 2015-08-04 편심 스크루 펌프용 고정자, 편심 스크루 펌프, 및 고정자 제조 방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14184955.4A EP2998584B1 (fr) 2014-09-16 2014-09-16 Stator pour une pompe à vis excentrique, pompe à vis excentrique et procédé de fabrication d'un stator

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EP2998584A1 EP2998584A1 (fr) 2016-03-23
EP2998584B1 true EP2998584B1 (fr) 2017-04-05

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EP14184955.4A Active EP2998584B1 (fr) 2014-09-16 2014-09-16 Stator pour une pompe à vis excentrique, pompe à vis excentrique et procédé de fabrication d'un stator

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US (1) US10563651B2 (fr)
EP (1) EP2998584B1 (fr)
JP (1) JP2017528648A (fr)
KR (1) KR20170056619A (fr)
CN (1) CN106715908B (fr)
AU (1) AU2015317188A1 (fr)
ES (1) ES2630365T3 (fr)
RU (1) RU2017113004A (fr)
WO (1) WO2016041686A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10215546B2 (en) * 2016-10-06 2019-02-26 Roper Pump Company Rotor profile comparator
BE1025569B1 (nl) * 2017-09-21 2019-04-17 Atlas Copco Airpower Naamloze Vennootschap Cilindrisch symmetrische volumetrische machine
CN109538112B (zh) * 2019-01-04 2023-09-08 中国地质大学（北京） 一种套装拼接式全金属螺杆定子加工方法

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FR1488652A (fr) * 1967-10-25
DE3902740C2 (de) 1989-01-31 1993-10-07 Linsinger Maschinenbau Gmbh Verfahren zum Herstellen von Statoren für Exzenterwellen-Pumpen oder -Motoren mit einem Innenlochprofil und Vorrichtung zum Erzeugen von Teilsegmenten des Innenlochprofils
JPH0326523U (fr) * 1989-07-25 1991-03-18
FR2756018B1 (fr) 1996-11-21 1999-01-22 Pcm Pompes Pompe a engrenages helicoidaux
CN1273330A (zh) * 2000-06-28 2000-11-15 孙平 一种制造螺杆泵定子的方法
CN1172782C (zh) * 2002-09-25 2004-10-27 上海橡胶制品研究所 螺杆抽油泵衬胶定子的制造方法
CN1621694A (zh) * 2003-11-24 2005-06-01 大庆油田有限责任公司 复合材料螺杆泵定子加工方法
US7396220B2 (en) * 2005-02-11 2008-07-08 Dyna-Drill Technologies, Inc. Progressing cavity stator including at least one cast longitudinal section
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
DE102009049311B4 (de) * 2009-10-14 2012-11-29 Brinkmann Pumpen K.H. Brinkmann Gmbh & Co. Kg Schraubenspindelmaschine und Verfahren zu ihrer Herstellung
CN103831930A (zh) * 2014-02-28 2014-06-04 广东斯坦德流体系统有限公司 一种橡胶定子成型夹具及橡胶定子成型工艺

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Also Published As

Publication number Publication date
AU2015317188A1 (en) 2017-03-30
RU2017113004A3 (fr) 2018-10-18
ES2630365T3 (es) 2017-08-21
CN106715908B (zh) 2019-05-31
EP2998584A1 (fr) 2016-03-23
WO2016041686A1 (fr) 2016-03-24
US10563651B2 (en) 2020-02-18
CN106715908A (zh) 2017-05-24
JP2017528648A (ja) 2017-09-28
RU2017113004A (ru) 2018-10-18
US20170254327A1 (en) 2017-09-07
KR20170056619A (ko) 2017-05-23

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