EP2721301B1 - Submersible pump and assembly method for a submersible pump - Google Patents

Submersible pump and assembly method for a submersible pump Download PDF

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Publication number
EP2721301B1
EP2721301B1 EP12724979.5A EP12724979A EP2721301B1 EP 2721301 B1 EP2721301 B1 EP 2721301B1 EP 12724979 A EP12724979 A EP 12724979A EP 2721301 B1 EP2721301 B1 EP 2721301B1
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EP
European Patent Office
Prior art keywords
pump
insert
submersible pump
casing
clamping
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
EP12724979.5A
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German (de)
French (fr)
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EP2721301A1 (en
Inventor
Michael Fath
Christoph Jäger
Boris Werner
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KSB AG
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KSB AG
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Publication date
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Priority to RS20161153A priority Critical patent/RS55486B1/en
Publication of EP2721301A1 publication Critical patent/EP2721301A1/en
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Publication of EP2721301B1 publication Critical patent/EP2721301B1/en
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/008—Pumps for submersible use, i.e. down-hole pumping
    • 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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • F04D29/606—Mounting in cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/648—Mounting; Assembling; Disassembling of axial pumps especially adapted for liquid pumps
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/02—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making

Definitions

  • the invention relates to a submersible pump and a method for producing a submersible pump, comprising a housing having a suction-side inlet opening, a pressure-side outlet opening and an opening for electrical lines, an electronics unit, an electric motor, a pressure chamber and a pump unit.
  • Submersible pumps are a type of pump that has been designed for different applications and tailored to the respective requirements. It is essential to immerse the pump in the fluid to be pumped. A special design requires that the pump can be placed in a wellbore. Since wellbores, particularly very deep ones, are very expensive, fitting to the wellbore is an essential feature of such a pump.
  • the DE 297 11 534 U1 describes a kit for submersible pumps, which is suitable for larger wells.
  • a submersible pump in which the inlet, pump and outlet are arranged axially in a row.
  • the individual components are surrounded by a common shell, which is subdivided into a first area, which encloses the motor and a second area, which encloses the pump. Both areas are connected by a connecting element, by which both the distance of the components from the inner wall of the housing and the axial position is fixed.
  • a generic submersible pump in which the essential individual components of the pump are arranged axially.
  • the suction-side inlet cover, the pump impeller, the motor and the pressure-side outlet cover are housed in a tubular sheath, wherein the conveyed fluid is passed through a gap between the motor and the housing to the pressure-side outlet opening.
  • the gap between the tubular jacket and the motor housing is defined by an elastomeric padding.
  • the motor is mounted on the suction inlet cover, which also contains the pump impeller.
  • the pressure-side outlet cover is connected only to the tubular casing,
  • the object of the invention is to provide a generic submersible pump, which allows easy installation and repair of the submersible pump.
  • the solution provides a submersible pump according to claim 1, wherein the electronics unit, the electric motor, the pressure chamber and the pump unit are preassembled for use, wherein the preassembled insert is supported at one end of the housing and at the opposite end of the housing an axial clamping and fastening system is provided.
  • the electronics unit may include both power electronics and signal electronics.
  • the inventive construction of the submersible pump makes it possible to align the pre-assembled components before they are joined in the enclosing housing. Furthermore, it is possible to make the enveloping housing in one piece or in one piece, whereby the seal against ingress of fluid is improved. Due to the clamping and fastening system, it is possible to provide the insert with a bias.
  • the tensioning and fastening system can be released. This has the advantage that the insert can be removed from the enclosing housing for inspection purposes. Then it can be reused and fixed again in the housing by the clamping and fastening system.
  • all components of the insert are provided with fixed or releasable devices for supporting against the housing, in particular for radial support.
  • the devices are used to transfer heat from the motor to the enclosing housing and at the same time support the mounting kit on the housing with a precisely defined distance, whereby a displacement of individual components during operation of the pump is prevented.
  • the motor is a synchronous motor, in particular a permanent magnet tipped synchronous motor.
  • These motors are energy efficient, easy to operate and robust. If the submersible motor pump is used as a borehole pump, then it is urgently necessary that the technology used is robust, since the pump must be lifted out of the borehole for repairs.
  • the pump is designed as a centrifugal pump.
  • the advantage here is that large delivery volumes with variable delivery are possible. It is also possible with centrifugal pumps, mitzu terminaln small amounts of sand.
  • the pump is designed as a positive-displacement pump, in particular as an eccentric screw pump. This self-priming pump allows high delivery heights and variable delivery volumes in low pulsation operation.
  • a pressure line is provided on the pressure-side outlet opening, into which a holder for a pulling means of the submersible pump is integrated, in particular the outlet opening itself can act as a holder.
  • the pump can be lifted out of the borehole on the traction means. This simplifies the installation of the pump on site, especially in a borehole.
  • the object of the invention is to provide a method for producing a submersible pump of the type described above.
  • the solution provides a method according to claim 9 for the manufacture and assembly of a submersible pump of the type described above, wherein in a first step, an insert from an electronics unit, an electric motor, a pressure chamber and a pump unit is pre-assembled, in a second step, the use in a Housing is added, wherein the insert is centered in the housing, and in a third step, the use of a clamping and / or fastening system is clamped and fastened in the housing.
  • pre-assembly an exact alignment of the individual components is possible before the insert is joined in the enclosing housing.
  • the means for maintaining a fixed distance between the insert and the enclosing housing center the insert and the bearing on the pressure side and defines the exact position of the insert.
  • a bias voltage can be brought to the use.
  • the fastening system holds the insert in the enveloping housing. If a Taperlock fastening system is used, then the clamping set be braced freely at the suction end of the enclosing tube without further precautions must be taken there, such as holes or threads.
  • the attachment of the insert can be solved. If the length of the insert has been slightly changed during the revision, the insert can be fixed again in the enclosing housing with the same fastening system.
  • the Fig. 1 shows a submersible motor pump according to the invention 1.
  • a housing 2 is at the upper end indicated a drive 3, which is connected via a coupling element 4 with the actual pump element.
  • the pump element is formed in the example shown as an eccentric screw pump, consisting of a stator 5 and a rotor 6, which are represented by a metal-elastomer pairing or a plastic-elastomer pairing.
  • a detail is marked, which comprises the clamping system 7.
  • the eccentric screw pump allows continuous water delivery, the pump can be self-priming.
  • the technology of Stator 5 and Rotor 6 is very robust and can also be used in abrasive, for example sandy, environment.
  • the coupling element 4 designed as a long rod makes it possible to establish a connection between the eccentric rotor 5 and the drive 3.
  • the drive 3 is typically an electric motor used. To achieve a high power density, one with Permanent magnet equipped synchronous motor used. This results in a low construction dimension, whereby the cost of a deep well well can be significantly reduced.
  • the individual components of the submersible pump are introduced from below into the housing 2.
  • the housing 2 which is already connected to the rod as the coupling element 4 and the rotor 5.
  • the clamping system 7 according to the invention, in the form of a Taperlock clamping system, is provided.
  • the Fig. 2 shows the details of the axial clamping and fastening system of the submersible pump.
  • a contact piece 8 encloses the stator 5 and provides at the lower end of the stator 5 a contact surface for the other components of the clamping system 7.
  • a contact piece 8 includes a snap element 9, which is firmly connected by a latching function with the contact piece 8 and is supported against the housing 2.
  • Adjacent to the snap element 9, a conical, inner clamping ring 10 is arranged, which forms the taper bushing.
  • an outer clamping ring 11 is arranged, which is also provided with a thread, so that it can be clamped to the inner clamping ring 10.
  • Both clamping rings are braced so that they are supported against the snap element 9, ie also against the housing 2.
  • a feather key 12 is additionally provided.
  • recesses 13 are provided on the outer clamping ring, which serve for applying a suitable tool for bracing. The design with recesses 13 makes it possible to create a predefined, simple and cost-effective approach to tools, which significantly increases the reliability and ease of installation.
  • the Fig. 3 shows an isometric view of the submersible pump 1, in particular the detail of the clamping system 7 from Fig. 1 is shown.
  • the stator 5 and the rotor 6 are shown in the housing 2.
  • the snap element 9 connects. This is firmly connected to the pressing piece 8.
  • the conical inner clamping ring 10 and thus connected for example by screwing outer clamping ring 11 is shown.
  • the illustration illustrates the attachment points for a tool for screwing the outer clamping ring 11 into the inner clamping ring 10, which are clamped together due to the conical shape of the inner clamping ring 10, whereby they bear against the housing 2 radially.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Description

Die Erfindung betrifft eine Tauchpumpe und ein Verfahren zur Herstellung einer Tauchpumpe, umfassend ein Gehäuse mit einer saugseitigen Einlassöffnung, einer druckseitigen Auslassöffnung und einem Durchlass für elektrische Leitungen, eine Elektronikeinheit, einen Elektromotor, einen Druckraum und eine Pumpeneinheit.The invention relates to a submersible pump and a method for producing a submersible pump, comprising a housing having a suction-side inlet opening, a pressure-side outlet opening and an opening for electrical lines, an electronics unit, an electric motor, a pressure chamber and a pump unit.

Tauchpumpen sind eine Gattung von Pumpen, die für verschiedene Einsatzbereiche konzipiert und auf die jeweiligen Erfordernisse abgestimmt wurden. Wesentlich ist die Möglichkeit, die Pumpe ins zu fördernde Fluid einzutauchen. Eine spezielle Ausführung erfordert, dass die Pumpe in einem Bohrloch platziert werden kann. Da Bohrlöcher, insbesondere sehr tief ausgeführte, sehr kostspielig sind, ist eine Anpassung an das Bohrloch ein wesentliches Merkmal einer solchen Pumpe.Submersible pumps are a type of pump that has been designed for different applications and tailored to the respective requirements. It is essential to immerse the pump in the fluid to be pumped. A special design requires that the pump can be placed in a wellbore. Since wellbores, particularly very deep ones, are very expensive, fitting to the wellbore is an essential feature of such a pump.

Die US 2007/0074871A1 beschreibt eine Tauchpumpe bei der die Pume in einem speziellen Brunnenrohr befestigt ist.The US 2007 / 0074871A1 describes a submersible pump in which the pump is mounted in a special well pipe.

Die DE 297 11 534 U1 beschreibt einen Bausatz für Tauchmotorpumpen, der für größere Brunnenanlagen geeignet ist.The DE 297 11 534 U1 describes a kit for submersible pumps, which is suitable for larger wells.

Die US 6 595 295 B1 beschreibt eine Tauchmotorpumpe, die mit einem Schmiermittel gefüllt ist, wodurch Kontamination der ungenutzten Pumpe vermieden wird.The US Pat. No. 6,595,295 B1 describes a submersible pump which is filled with a lubricant, thereby avoiding contamination of the unused pump.

Durch die US 4,966,532 ist eine Tauchmotorpumpe bekannt, bei der Einlass, Pumpe und Auslass in einer Reihe axial angeordnet sind. Die Einzelkomponenten sind durch eine gemeinsame Hülle umgeben, die unterteilt ist in einen ersten Bereich, der den Motor umschließt und einen zweiten Bereich, der die Pumpe umschließt. Beide Bereiche sind durch ein Verbindungselement verbunden, durch das sowohl der Abstand der Komponenten von der Innenwand des Gehäuses als auch die axiale Position festgelegt ist.By the US 4,966,532 For example, a submersible pump is known in which the inlet, pump and outlet are arranged axially in a row. The individual components are surrounded by a common shell, which is subdivided into a first area, which encloses the motor and a second area, which encloses the pump. Both areas are connected by a connecting element, by which both the distance of the components from the inner wall of the housing and the axial position is fixed.

Durch die EP 0 746 683 B1 ist eine gattungsgemäße Tauchpumpe bekannt, bei der die wesentlichen Einzelkomponenten der Pumpe axial angeordnet sind. In einer Linie liegen der saugseitige Einlassdeckel, das Pumpenlaufrad, der Motor und der druckseitige Auslassdeckel. Diese Einzelkomponenten sind in einer rohrförmigen Ummantelung untergebracht, wobei das geförderte Fluid durch einen Spalt zwischen dem Motor und dem Gehäuse zur druckseitigen Auslassöffnung geführt wird. Der Spalt zwischen der rohrförmigen Ummantelung und dem Motorgehäuse wird durch einen elastomeren Polstern definiert. Der Motor ist am saugseitigen Einlassdeckel montiert, der auch das Pumpenlaufrad enthält. Der druckseitige Auslassdeckel ist lediglich mit der rohrförmigen Ummantelung verbunden,By the EP 0 746 683 B1 a generic submersible pump is known in which the essential individual components of the pump are arranged axially. In one line are the suction-side inlet cover, the pump impeller, the motor and the pressure-side outlet cover. These individual components are housed in a tubular sheath, wherein the conveyed fluid is passed through a gap between the motor and the housing to the pressure-side outlet opening. The gap between the tubular jacket and the motor housing is defined by an elastomeric padding. The motor is mounted on the suction inlet cover, which also contains the pump impeller. The pressure-side outlet cover is connected only to the tubular casing,

Aufgabe der Erfindung ist es, eine gattungsgemäße Tauchpumpe zu schaffen, die eine einfache Montage und Reparatur der Tauchpumpe ermöglicht.The object of the invention is to provide a generic submersible pump, which allows easy installation and repair of the submersible pump.

Die Lösung sieht eine Tauchpumpe gemäß Anspruch 1 vor, bei der die Elektronikeinheit, der Elektromotor, der Druckraum und die Pumpeneinheit zu einem Einsatz vormontierbar sind, wobei der vormontierte Einsatz an einem Ende des Gehäuses abgestützt ist und am gegenüberliegenden Ende des Gehäuses ein axiales Spann- und Befestigungssystem vorgesehen ist. Die Elektronikeinheit kann sowohl Leistungselektronik als auch Signalelektronik umfassen.The solution provides a submersible pump according to claim 1, wherein the electronics unit, the electric motor, the pressure chamber and the pump unit are preassembled for use, wherein the preassembled insert is supported at one end of the housing and at the opposite end of the housing an axial clamping and fastening system is provided. The electronics unit may include both power electronics and signal electronics.

Der erfindungsgemäße Aufbau der Tauchpumpe ermöglicht es, die vormontierten Einzelkomponenten auszurichten, bevor sie in das umhüllende Gehäuse gefügt werden. Des Weiteren ist es möglich, das umhüllende Gehäuse einteilig oder einstückig auszuführen, wodurch die Abdichtung gegen eindringendes Fluid verbessert wird. Durch das Spann- und Befestigungssystem ist es ermöglicht den Einsatz mit einer Vorspannung zu versehen.The inventive construction of the submersible pump makes it possible to align the pre-assembled components before they are joined in the enclosing housing. Furthermore, it is possible to make the enveloping housing in one piece or in one piece, whereby the seal against ingress of fluid is improved. Due to the clamping and fastening system, it is possible to provide the insert with a bias.

Nach einer Ausgestaltung der erfindungsgemäßen Tauchpumpe ist das Spann- und Befestigungssystem lösbar. Dies hat den Vorteil, dass der Einsatz aus dem umhüllenden Gehäuse zu Revisionszwecken entnommen werden kann. Anschließend kann er wieder eingesetzt und erneut durch das Spann- und Befestigungssystem im Gehäuse fixiert werden.According to one embodiment of the submersible pump according to the invention, the tensioning and fastening system can be released. This has the advantage that the insert can be removed from the enclosing housing for inspection purposes. Then it can be reused and fixed again in the housing by the clamping and fastening system.

Besonders vorteilhaft ist es, das Spann- und Befestigungssystem als Taperlock Spannbuchse auszuführen, wodurch eine kraftschlüssige Verbindung hergestellt werden kann, die axial zentriert ist.To carry out the tensioning and fastening system as Taperlock clamping bush, whereby a non-positive connection can be made, which is axially centered is particularly advantageous.

In einer weiteren vorteilhaften Ausgestaltung sind alle Komponenten des Einsatzes mit festen oder lösbaren Vorrichtungen zum Abstützen gegen das Gehäuse versehen, insbesondere zum radialen Abstützen. Die Vorrichtungen dienen zum Wärmetransport vom Motor an das umhüllende Gehäuse und stützen gleichzeitig den Einbausatz am Gehäuse mit genau definiertem Abstand ab, wobei eine Verschiebung einzelner Komponenten beim Betrieb der Pumpe verhindert wird.In a further advantageous embodiment, all components of the insert are provided with fixed or releasable devices for supporting against the housing, in particular for radial support. The devices are used to transfer heat from the motor to the enclosing housing and at the same time support the mounting kit on the housing with a precisely defined distance, whereby a displacement of individual components during operation of the pump is prevented.

Vorteilhaft ist es im Bereich der druckseitigen Auslassöffnung ein Lager zur Abstützung des Einsatzes vorzusehen, insbesondere zur zentrierten Abstützung. Der Einsatz kann bei der Montage mittels einer Führung direkt in dieses Lager eingepasst werden. Die Zentrierung vereinfacht die Herstellung der definierten Vorspannung des Einsatzes gegenüber dem umhüllenden Gehäuse.It is advantageous in the region of the pressure-side outlet opening to provide a bearing for supporting the insert, in particular for centered support. The insert can be fitted during assembly by means of a guide directly into this camp. The centering simplifies the production of the defined bias of the insert relative to the enclosing housing.

Vorteilhaft ist der Motor ein Synchronmotor, insbesondere ein permanentmagnetbestückter Synchronmotor. Diese Motoren sind energieeffizient, einfach zu betreiben und robust. Wird die Tauchmotorpumpe als Bohrlochpumpe eingesetzt, so ist es dringend notwendig, dass die verwendete Technik robust ist, da die Pumpe für Reparaturen aus dem Bohrloch gehoben werden muss.Advantageously, the motor is a synchronous motor, in particular a permanent magnet tipped synchronous motor. These motors are energy efficient, easy to operate and robust. If the submersible motor pump is used as a borehole pump, then it is urgently necessary that the technology used is robust, since the pump must be lifted out of the borehole for repairs.

In einer Ausgestaltung der Erfindung ist die Pumpe als eine Kreiselpumpe ausgeführt. Von Vorteil ist dabei, dass große Fördervolumen mit variabler Förderhöhe möglich sind. Außerdem ist es bei Kreiselpumpen möglich, geringe Mengen an Sand mitzufördern.In one embodiment of the invention, the pump is designed as a centrifugal pump. The advantage here is that large delivery volumes with variable delivery are possible. It is also possible with centrifugal pumps, mitzufördern small amounts of sand.

In einer weiteren Ausführungsform ist die Pumpe als eine Verdrängerpumpe ausgeführt, insbesondere als eine Exzenterschneckenpumpe. Diese selbstansaugende Pumpe ermöglicht große Förderhöhen und variable Fördervolumina bei pulsationsarmem Betrieb.In a further embodiment, the pump is designed as a positive-displacement pump, in particular as an eccentric screw pump. This self-priming pump allows high delivery heights and variable delivery volumes in low pulsation operation.

Erfindungsgemäß ist an der druckseitigen Auslassöffnung eine Druckleitung vorgesehen, in die eine Halterung für ein Zugmittel der Tauchpumpe integriert ist, insbesondere kann die Auslassöffnung selbst als Halterung fungieren. Für eine Re-vision kann die Pumpe an dem Zugmittel aus dem Bohrloch gehoben werden. Dies vereinfacht die Montage der Pumpe vor Ort, insbesondere in einem Bohrloch.According to the invention, a pressure line is provided on the pressure-side outlet opening, into which a holder for a pulling means of the submersible pump is integrated, in particular the outlet opening itself can act as a holder. For a re-vision, the pump can be lifted out of the borehole on the traction means. This simplifies the installation of the pump on site, especially in a borehole.

Des Weiteren besteht die Aufgabe der Erfindung darin, ein Verfahren zur Herstellung einer Tauchpumpe vorbeschriebener Bauart bereitzustellen.Furthermore, the object of the invention is to provide a method for producing a submersible pump of the type described above.

Die Lösung sieht ein Verfahren gemäß Anspruch 9 zur Herstellung und zum Zusammenbau einer Tauchpumpe der vorbeschriebenen Bauart vor, wobei in einem ersten Schritt ein Einsatz aus einer Elektronikeinheit, einem Elektromotor, einem Druckraum und einer Pumpeneinheit vormontiert wird, in einem zweiten Schritt der Einsatz in ein Gehäuse gefügt wird, wobei der Einsatz im Gehäuse zentriert wird, und in einem dritten Schritt der Einsatz durch ein Spann- und/oder Befestigungssystem im Gehäuse verspannt und befestigt wird. Durch die Vormontage ist eine exakte Ausrichtung der einzelnen Komponenten möglich, bevor der Einsatz in das umhüllende Gehäuse gefügt wird. Wird der Einsatz beispielsweise auf der Saugseite in das umhüllende Gehäuse eingeschoben, so zentrieren die Vorrichtungen zum Einhalten eines festen Abstandes zwischen dem Einsatz und dem umhüllenden Gehäuse den Einsatz und das Lager auf der Druckseite und definiert die genaue Position des Einsatzes. Durch das Spannsystem kann eine Vorspannung auf den Einsatz gebracht werden. Das Befestigungssystem hält den Einsatz im umhüllenden Gehäuse fest. Wird ein Taperlock Befestigungssystem verwendet, so kann der Spannsatz frei am saugseitigen Ende des umhüllenden Rohres verspannt werden, ohne dass dort weitere Vorkehrungen getroffen werden müssen, wie beispielsweise Löcher oder Gewinde. Für Revisionen kann die Befestigung des Einsatzes gelöst werden. Sollte die Länge des Einsatzes im Rahmen der Revision geringfügig verändert worden sein, so kann der Einsatz mit demselben Befestigungssystem wieder im umhüllenden Gehäuse befestigt werden.The solution provides a method according to claim 9 for the manufacture and assembly of a submersible pump of the type described above, wherein in a first step, an insert from an electronics unit, an electric motor, a pressure chamber and a pump unit is pre-assembled, in a second step, the use in a Housing is added, wherein the insert is centered in the housing, and in a third step, the use of a clamping and / or fastening system is clamped and fastened in the housing. By pre-assembly, an exact alignment of the individual components is possible before the insert is joined in the enclosing housing. For example, when the insert is inserted into the enclosing housing on the suction side, the means for maintaining a fixed distance between the insert and the enclosing housing center the insert and the bearing on the pressure side and defines the exact position of the insert. By the clamping system, a bias voltage can be brought to the use. The fastening system holds the insert in the enveloping housing. If a Taperlock fastening system is used, then the clamping set be braced freely at the suction end of the enclosing tube without further precautions must be taken there, such as holes or threads. For revisions, the attachment of the insert can be solved. If the length of the insert has been slightly changed during the revision, the insert can be fixed again in the enclosing housing with the same fastening system.

Weitere Ausgestaltungen ergeben sich aus der Kombination der bisher dargestellten und sind deshalb hier nicht weiter ausgeführt.Further embodiments result from the combination of the previously shown and are therefore not further elaborated here.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im Folgenden näher beschrieben. Es zeigen die

  • Fig. 1 eine erfindungsgemäße Tauchpumpe, die
  • Fig. 2 eine Detailansicht aus Fig. 1 und die
  • Fig. 3 eine isometrische Darstellung der Detailansicht.
Embodiments of the invention are illustrated in the drawings and will be described in more detail below. It show the
  • Fig. 1 a submersible pump according to the invention, the
  • Fig. 2 a detailed view Fig. 1 and the
  • Fig. 3 an isometric view of the detail view.

Die Fig. 1 zeigt eine erfindungsgemäße Tauchmotorpumpe 1. In einem Gehäuse 2 befindet sich am oberen Ende angedeutet ein Antrieb 3, der über ein Kuppelelement 4 mit dem eigentlichen Pumpenelement verbunden ist. Das Pumpenelement ist im dargestellten Beispiel als eine Exzenterschneckenpumpe ausgebildet, bestehend aus einem Stator 5 und einem Rotor 6, die durch eine Metall-Elastomer-Paarung oder eine Kunststoff-Elastomer-Paarung dargestellt werden. Am unteren Ende der Tauchpumpe 1 ist ein Detail markiert, das das Spannsystem 7 umfasst. Die Exzenterschneckenpumpe ermöglicht eine kontinuierliche Wasserförderung, wobei die Pumpe selbstansaugend sein kann. Die Technik aus Stator 5 und Rotor 6 ist sehr robust und kann auch im abrasiven, zum Beispiel sandigen, Umfeld eingesetzt werden. Das als lange Stange ausgeführte Kuppelelement 4 ermöglicht es, eine Verbindung zwischen dem exzentrischen Rotor 5 und dem Antrieb 3 herzustellen. Als Antrieb 3 kommt typischerweise ein Elektromotor zum Einsatz. Um eine hohe Leistungsdichte zu erreichen, wird ein mit Permanentmagneten bestückter Synchronmotor verwendet. Somit erhält man ein geringes Baumaß, wodurch die Kosten für eine tiefe Brunnenbohrung erheblich reduziert werden können.The Fig. 1 shows a submersible motor pump according to the invention 1. In a housing 2 is at the upper end indicated a drive 3, which is connected via a coupling element 4 with the actual pump element. The pump element is formed in the example shown as an eccentric screw pump, consisting of a stator 5 and a rotor 6, which are represented by a metal-elastomer pairing or a plastic-elastomer pairing. At the lower end of the submersible pump 1, a detail is marked, which comprises the clamping system 7. The eccentric screw pump allows continuous water delivery, the pump can be self-priming. The technology of Stator 5 and Rotor 6 is very robust and can also be used in abrasive, for example sandy, environment. The coupling element 4 designed as a long rod makes it possible to establish a connection between the eccentric rotor 5 and the drive 3. The drive 3 is typically an electric motor used. To achieve a high power density, one with Permanent magnet equipped synchronous motor used. This results in a low construction dimension, whereby the cost of a deep well well can be significantly reduced.

Die einzelnen Komponenten der Tauchpumpe werden von unten in das Gehäuse 2 eingebracht. Beim Zusammenbau wird zuerst der Antrieb 3 im Gehäuse 2 platziert, wobei dieser bereits mit der Stange als Kuppelelement 4 und dem Rotor 5 verbunden ist. Zur sicheren drehfesten Befestigung des Einsatzes im Gehäuse 2 ist das erfindungsgemäße Spannsystem 7, in Form eines Taperlock Spannsystems, vorgesehen.The individual components of the submersible pump are introduced from below into the housing 2. When assembling the drive 3 is first placed in the housing 2, which is already connected to the rod as the coupling element 4 and the rotor 5. For secure rotationally fixed attachment of the insert in the housing 2, the clamping system 7 according to the invention, in the form of a Taperlock clamping system, is provided.

Die Fig. 2 zeigt die Details des axialen Spann- und Befestigungssystems der Tauchpumpe. Ein Anpressstück 8 umschließt den Stator 5 und bietet am unteren Ende des Stators 5 eine Anpressfläche für die weiteren Komponenten des Spannsystems 7. Direkt an dieses Anpressstück 8 schließt ein Schnappelement 9 an, wobei dieses durch eine Rastfunktion fest mit dem Anpressstück 8 verbunden ist und sich gegen das Gehäuse 2 abstützt. An dem Schnappelement 9 anliegend ist ein kegelförmiger, innerer Spannring 10 angeordnet, der die Taper-Buchse bildet. Innerhalb dieses inneren Spannrings 10, der mit einem Gewinde versehen ist, ist ein äußerer Spannring 11 angeordnet, der ebenfalls mit einem Gewinde versehen ist, so dass er mit dem inneren Spannring 10 verspannt werden kann. Beide Spannringe werden so verspannt, dass sie sich gegen das Schnappelement 9, also auch gegen das Gehäuse 2 abstützen. Zur Verdrehsicherung ist zusätzlich eine Passfeder 12 vorgesehen. Zur vereinfachten Montage des Spannsystems sind an dem äußeren Spannring 11 Aussparungen 13 vorgesehen, die zum Ansetzen eines geeigneten Werkzeugs zum Verspannen dienen. Die Ausführung mit Aussparungen 13 ermöglicht es, einen vordefinierten, einfachen und kostengünstigen Ansatz für Werkzeug zu schaffen, was die Funktionssicherheit und Montagefreundlichkeit erheblich erhöht.The Fig. 2 shows the details of the axial clamping and fastening system of the submersible pump. A contact piece 8 encloses the stator 5 and provides at the lower end of the stator 5 a contact surface for the other components of the clamping system 7. Directly to this contact piece 8 includes a snap element 9, which is firmly connected by a latching function with the contact piece 8 and is supported against the housing 2. Adjacent to the snap element 9, a conical, inner clamping ring 10 is arranged, which forms the taper bushing. Within this inner clamping ring 10, which is provided with a thread, an outer clamping ring 11 is arranged, which is also provided with a thread, so that it can be clamped to the inner clamping ring 10. Both clamping rings are braced so that they are supported against the snap element 9, ie also against the housing 2. To prevent rotation, a feather key 12 is additionally provided. For simplified assembly of the clamping system 11 recesses 13 are provided on the outer clamping ring, which serve for applying a suitable tool for bracing. The design with recesses 13 makes it possible to create a predefined, simple and cost-effective approach to tools, which significantly increases the reliability and ease of installation.

Die Fig. 3 zeigt eine isometrische Darstellung der Tauchpumpe 1, wobei insbesondere das Detail des Spannsystems 7 aus Fig. 1 gezeigt ist. Im rechten Teil der Figur ist im Gehäuse 2 der Stator 5 und der Rotor 6 dargestellt. Links in der Fig. 3 ist die Anordnung der einzelnen Komponenten des axialen Spann- und Befestigungssystems gezeigt. Direkt an das Gehäuse 2 schließt das Schnappelement 9 an. Dieses ist fest mit dem Anpressstück 8 verbunden. Innerhalb dessen ist der konische innere Spannring 10 und der damit beispielsweise durch Verschraubung verbundene äußere Spannring 11 dargestellt. Die Darstellung veranschaulicht die Ansatzstellen für ein Werkzeug zum Einschrauben des äußeren Spannrings 11 in den inneren Spannring 10, die infolge der konischen Form des inneren Spannrings10 miteinander verspannt werden, wodurch sie sich gegen das Gehäuse 2 radial abstützen.The Fig. 3 shows an isometric view of the submersible pump 1, in particular the detail of the clamping system 7 from Fig. 1 is shown. In the right part of the figure, the stator 5 and the rotor 6 are shown in the housing 2. Left in the Fig. 3 is the arrangement of the individual components of the axial clamping and fastening system shown. Directly to the housing 2, the snap element 9 connects. This is firmly connected to the pressing piece 8. Within which the conical inner clamping ring 10 and thus connected for example by screwing outer clamping ring 11 is shown. The illustration illustrates the attachment points for a tool for screwing the outer clamping ring 11 into the inner clamping ring 10, which are clamped together due to the conical shape of the inner clamping ring 10, whereby they bear against the housing 2 radially.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Tauchpumpesubmersible pump
22
Gehäusecasing
33
Antriebdrive
44
Kuppelelementcoupling element
55
Statorstator
66
Rotorrotor
77
Spannsystemclamping system
88th
AnpressstückAnpressstück
99
Schnappelementsnap element
1010
Innerer SpannringInner tension ring
1111
Äußerer SpannringOuter tension ring
1212
PassfederAdjusting spring
1313
Aussparungenrecesses

Claims (9)

  1. Submersible pump (1) comprising a casing (2), with a suction-side inlet opening, a pressure-side outlet opening and a through-passage for electric lines, and also comprising an electronics unit, an electric motor, a pressure chamber and a pump unit, wherein the electronics unit, the electric motor, the pressure chamber and the pump unit can be preassembled to form an insert, wherein the preassembled insert is introduced into the casing such that it is supported at one end of the casing and a pressure line is provided on the pressure-side outlet opening, the pressure line being designed as a traction mechanism for retaining the submersible pump (1), characterized in that an axial clamping and fastening system (7) is provided at the opposite end of the casing (2), wherein the clamping system can subject the insert to prestressing and the fastening system prestresses and secures the insert in the surrounding casing.
  2. Submersible pump (1) according to Claim 1, characterized in that the clamping and fastening system (7) can be released from the casing (2).
  3. Submersible pump (1) according to Claim 1 or 2, characterized in that the clamping and fastening system (7) is configured as a taper lock clamping bushing.
  4. Submersible pump (1) according to Claim 1, 2 or 3, characterized in that components of the insert are provided with devices for providing support, in particular radial support, against the casing (2).
  5. Submersible pump (1) according to one of Claims 1 to 4, characterized in that a bearing for supporting the insert, in particular for supporting the same in a centered manner, is provided in the region of the pressure-side outlet opening.
  6. Submersible pump (1) according to one of Claims 1 to 5, characterized in that the drive (3) provided is a synchronous motor, in particular a synchronous motor equipped with permanent magnets.
  7. Submersible pump (1) according to one of Claims 1 to 6, characterized in that the pump is a centrifugal pump.
  8. Submersible pump (1) according to one of Claims 1 to 6, characterized in that the pump is a positive-displacement pump, in particular an eccentric screw pump.
  9. Method for assembling a submersible pump (1) according to one of Claims 1 to 8, wherein in a first step an insert is preassembled from an electronics unit, an electric motor, a pressure chamber and a pump unit, in a second step the insert is introduced into a casing (2), the insert being centered in the casing (2), and in a third step the insert is braced and fastened in the casing (2) by a clamping and fastening system (7).
EP12724979.5A 2011-06-17 2012-05-30 Submersible pump and assembly method for a submersible pump Active EP2721301B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RS20161153A RS55486B1 (en) 2011-06-17 2012-05-30 Submersible pump and assembly method for a submersible pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011077777A DE102011077777B3 (en) 2011-06-17 2011-06-17 Submersible pump and method for assembling a submersible pump
PCT/EP2012/060096 WO2012171792A1 (en) 2011-06-17 2012-05-30 Immersion pump and method for assembling an immersion pump

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EP2721301A1 EP2721301A1 (en) 2014-04-23
EP2721301B1 true EP2721301B1 (en) 2016-10-12

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US (1) US9605679B2 (en)
EP (1) EP2721301B1 (en)
CN (1) CN103827504B (en)
BR (1) BR112013030162B1 (en)
DE (1) DE102011077777B3 (en)
DK (1) DK2721301T3 (en)
ES (1) ES2609855T3 (en)
RS (1) RS55486B1 (en)
WO (1) WO2012171792A1 (en)
ZA (1) ZA201309468B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014102126A1 (en) * 2014-02-19 2015-08-20 Netzsch Pumpen & Systeme Gmbh A pumping system for delivering viscous or partially viscous media from a borehole and method for withdrawing an eccentric screw pump from a borehole
EP3345285B1 (en) 2015-09-03 2021-03-17 Fluid Handling LLC. Submersible pump motor housing for improving the serviceability of submersible pumps
CN108468646B (en) * 2018-05-24 2024-01-19 劳伦斯泵业机械(北京)有限公司 Submersible pump applied to ground
CN214577769U (en) * 2021-04-06 2021-11-02 台州佳迪泵业有限公司 Deep well pump

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BR112013030162A8 (en) 2018-07-31
ZA201309468B (en) 2014-08-27
RS55486B1 (en) 2017-04-28
DE102011077777B3 (en) 2012-07-26
US9605679B2 (en) 2017-03-28
US20140134013A1 (en) 2014-05-15
WO2012171792A1 (en) 2012-12-20
BR112013030162A2 (en) 2017-03-14
CN103827504A (en) 2014-05-28
CN103827504B (en) 2016-08-17
EP2721301A1 (en) 2014-04-23
ES2609855T3 (en) 2017-04-24
DK2721301T3 (en) 2017-01-30
BR112013030162B1 (en) 2021-05-11

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