DE10360812A1 - Long electric motor for submersible pumps has cylindrical abrasion resistant insert mounted near its center between rotor and stator which has radial ribs fitting into grooves of stator which contain windings - Google Patents
Long electric motor for submersible pumps has cylindrical abrasion resistant insert mounted near its center between rotor and stator which has radial ribs fitting into grooves of stator which contain windings Download PDFInfo
- Publication number
- DE10360812A1 DE10360812A1 DE10360812A DE10360812A DE10360812A1 DE 10360812 A1 DE10360812 A1 DE 10360812A1 DE 10360812 A DE10360812 A DE 10360812A DE 10360812 A DE10360812 A DE 10360812A DE 10360812 A1 DE10360812 A1 DE 10360812A1
- Authority
- DE
- Germany
- Prior art keywords
- stator
- rotor
- submersible motor
- motor according
- submersible
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/132—Submersible electric motors
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
Abstract
Description
Die Erfindung geht aus von einem langen elektrischen Tauchmotor für eine Tauchpumpe, wobei der Tauchmotor eine drehbar gelagerte Motorwelle, einen darauf drehfest angeordneten Rotor und einen den Rotor umgebenden Stator mit zu dem Motor hin offenen Längsnuten mit darin angeordneten elektrischen Windungen aufweist.The Invention is based on a long electric submersible motor for a submersible pump, wherein the submersible motor has a rotatably mounted motor shaft, one thereon rotatably mounted rotor and a stator surrounding the rotor with longitudinal grooves open to the engine having disposed therein electrical windings.
Bei langen elektrischen Tauchmotoren der vorgenannten Art für Tauchpumpen, wobei die Rotoren dieser Motoren eine Länge von wenigstens 1 m, aber auch eine Länge von über 2 m aufweisen, ist der Nachteil gegeben, dass sich die Motorwelle im Bereich des Rotors und der darauf sitzende Rotor im Betrieb des Motors derart durchbiegen, dass der übliche umfangsmäßige Luftspalt zwischen dem Rotor und dem ihn umgebenen Stator überwunden wird. Dadurch legt sich der rotierende Rotor in seinem Mittelbereich an den stationären Stator schleifend an, so dass es in diesem Mittelbereich zu einem Verschleiß und Riefenbildung an Rotor und Stator und im ungünstigsten Fall zum Festfressen des Rotors an dem Stator kommt. Um diese Mängel möglichst zu vermeiden, hat man bisher zumindest die Motorwelle relativ biegesteif ausgebildet, d. h. es wurde im Wesentlichen eine Motorwelle mit einem äußeren Durchmesser gewählt, der eine die genannten Mängel bedingende Durchbiegung der Motorwelle nach Möglichkeit vermeidet. Einem solchen Vorgehen sind jedoch bei sehr langen Tauchmotoren, insbesondere wenn sie länger als 2,00 m sind, grenzen gesetzt, weil dies unverhältnismäßig große Durchmesser auch für den Rotor und für den Sta tor zu Folge hat. Des Weiteren ist der höhere Materialverbrauch für die Motorwelle sowie auch für den Rotor und den Stator nachteilig, so dass auch der fertige Tauchmotor einen dementsprechend größeren Durchmesser aufweist. Dies wiederum schränkt die Einsetzbarkeit der Tauchpumpe in sehr engen Brunnenbohrungen und Brunnenrohren ein.at long electric submersible motors of the aforementioned type for submersible pumps, the rotors of these motors being at least 1 m in length but also a length from above 2 m, the disadvantage is that the motor shaft in the area of the rotor and the rotor sitting on it in the operation of the Bend the engine so that the usual circumferential air gap is overcome between the rotor and the stator surrounding it. This puts the rotating rotor in its central region to the stationary stator dragging on, leaving it in this mid-range to wear and scoring on rotor and stator and in the most unfavorable Case for seizing the rotor comes to the stator. To these defects as possible To avoid, so far at least the motor shaft has been relatively rigid trained, d. H. it was essentially a motor shaft with an outer diameter selected one of the mentioned shortcomings conditional deflection of the motor shaft avoids as far as possible. a However, such procedures are for very long submersible motors, in particular if they last longer than 2.00 m are set, because they are disproportionately large diameter also for the rotor and for the goal has to result. Furthermore, the higher material consumption for the motor shaft as well also for the rotor and the stator adversely, so that the finished submersible motor a correspondingly larger diameter having. This in turn restricts the applicability of the submersible pump in very narrow wells and well pipes.
Die Aufgabe der Erfindung besteht in der Verbesserung eines Tauchmotors der einleitend angeführten Art dahingehend, dass die Auswirkungen der Durchbiegung des rotierenden Rotors des Tauchmotors zumindest abgemildert sind.The The object of the invention is to improve a submersible motor the introductory Type to the effect that the bending of the rotating Rotor of the submersible motor are at least mitigated.
Die Lösung dieser Aufgabe besteht darin, dass der einleitend angeführte Tauchmotor derart weitergestaltet ist, dass im Bereich seiner axialen Längsmitte an sich radial gegenüberliegenden Umfangsflächen des Stators und/oder des Rotors ein Einsatz aus verschleißtem Material vorgesehen ist.The solution this task is that the initially mentioned submersible motor is further developed such that in the region of its axial longitudinal center in itself radially opposite peripheral surfaces of the stator and / or the rotor is an insert of worn material is provided.
Durch die erfindungsgemäße Lösung sind die Verschleißerscheinung und die Riefenbildung zwischen dem Stator und dem Rotor im Bereich der axialen Längsmitte des Tauchmotors, d. h. an dem Rotor und an dem Stator, an den sich radial gegenüberliegenden Umfangsflächen erheblich gemindert, wenn sich der Tauchmotor beispielsweise in einem rauen Betrieb befindet und/oder in einer mehr oder weniger starken Schräglage seine rotierende Antriebsfunktion für die Tauchpumpe durchführt. Auch ist die Gefahr, dass sich der Rotor innerhalb des Stators festfressen kann, dadurch vermieden, zumindest aber erheblich herabgesetzt. Ein weiterer Vorteil besteht darin, dass eine im Bereich der Längserstreckung des Rotors und des Stators im Außendurchmesser wie bisher oder kleiner ausgebildete Motorwelle gewählt werden kann, weil eine eventuelle Durchbiegung der Motorwelle im Bereich der axialen Längsmitte des Rotors sich praktisch nicht mehr schädlich auswirkt.By the solution according to the invention are the of wear and the scoring between the stator and the rotor in the area the axial longitudinal center of the submersible, d. H. on the rotor and on the stator to which radially opposite peripheral surfaces significantly reduced when the submersible motor, for example, in a rough operation and / or more or less strong tilt performs its rotary drive function for the submersible pump. Also is the risk of the rotor seizing inside the stator can, thereby avoided, or at least significantly reduced. Another advantage is that one in the region of the longitudinal extent the rotor and the stator in the outer diameter as before or Less trained motor shaft can be chosen because a Possible bending of the motor shaft in the area of the axial longitudinal center of the rotor is practically no longer harmful.
Eine vorteilhafte Ausgestaltung der erfindungsgemäßen Lösung besteht darin, dass der Einsatz aus verschleißfestem Material eine Stützlagerausbildung ist, die den Rotor einerseits mit radialem Abstand entsprechend dem üblichen Luftspalt zwischen dem Rotor und dem Stator umgibt und andererseits ortsfest teilweise in die Längsnuten des Stators eingreift. Diese Ausgestaltung des verschleißfesten Einsatzes erlaubt eine einfache und sichere Befestigung der Stützlagerausbildung an dem Stator.A advantageous embodiment of the solution according to the invention is that the Insert made of wear-resistant Material a support bearing training is that corresponding to the rotor on the one hand with a radial distance the usual Air gap between the rotor and the stator surrounds and on the other hand stationary partly in the longitudinal grooves engages the stator. This embodiment of the wear-resistant Insert allows a simple and secure attachment of the support bearing training on the stator.
In weiterer Ausgestaltung der Stützlagerausbildung ist diese einstückig aus einem Lagermetall hergestellt und besteht aus einem dem Rotor zugekehrten Ringteil mit radial auswärts gerichteten, formschlüssig in die Längsnuten des Stators eingreifenden Formelementen. Eine derartige Stützlagerausbildung lässt sich einfach und kostengünstig durch Gießen herstellen.In further embodiment of the support bearing training is this one piece made of a bearing metal and consists of a rotor facing ring part with radially outwardly directed, form-fitting in the longitudinal grooves the stator engaging form elements. Such a support bearing training let yourself easy and inexpensive through to water produce.
Die Erfindung ist nachstehend anhand eines in der anliegenden Zeichnung dargestellten Ausführungsbeispieles näher erläutert. Es zeigen:The Invention is described below with reference to an attached drawing illustrated embodiment explained in more detail. It demonstrate:
Der
in
Derartige
Tauchmotoren können
eine sehr große
Länge aufweisen,
insbesondere wenn sie Tauchpumpen antreiben, die eine große Förderleistung
und insbesondere eine große
Förderhöhe erbringen
müssen.
In diesem Fall kann der Rotor
Wie
Die
Der
Stator
Vorzugsweise
wird die Stützlagerausbildung
Die
Stützlagerausbildung
Alternativ
kann die Stützlagerausbildung
Vorstehend
ist der Einsatz
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10360812A DE10360812A1 (en) | 2003-12-23 | 2003-12-23 | Long electric motor for submersible pumps has cylindrical abrasion resistant insert mounted near its center between rotor and stator which has radial ribs fitting into grooves of stator which contain windings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10360812A DE10360812A1 (en) | 2003-12-23 | 2003-12-23 | Long electric motor for submersible pumps has cylindrical abrasion resistant insert mounted near its center between rotor and stator which has radial ribs fitting into grooves of stator which contain windings |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10360812A1 true DE10360812A1 (en) | 2005-09-15 |
Family
ID=34853295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10360812A Ceased DE10360812A1 (en) | 2003-12-23 | 2003-12-23 | Long electric motor for submersible pumps has cylindrical abrasion resistant insert mounted near its center between rotor and stator which has radial ribs fitting into grooves of stator which contain windings |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10360812A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2461113C2 (en) * | 2007-08-29 | 2012-09-10 | Шлюмбергер Текнолоджи Б.В. | System and method of submersible motor winding protection |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE460178C (en) * | 1925-01-30 | 1928-05-22 | Bbc Brown Boveri & Cie | Bearing arrangement for induction regulators of relatively large iron length, the runner of which is still supported between the two end bearings by at least one intermediate bearing |
GB953844A (en) * | 1962-02-26 | 1964-04-02 | Allis Chalmers Mfg Co | Improved dynamo-electric machine |
GB2166908A (en) * | 1984-11-07 | 1986-05-14 | Ebara Corp | Motor |
-
2003
- 2003-12-23 DE DE10360812A patent/DE10360812A1/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE460178C (en) * | 1925-01-30 | 1928-05-22 | Bbc Brown Boveri & Cie | Bearing arrangement for induction regulators of relatively large iron length, the runner of which is still supported between the two end bearings by at least one intermediate bearing |
GB953844A (en) * | 1962-02-26 | 1964-04-02 | Allis Chalmers Mfg Co | Improved dynamo-electric machine |
GB2166908A (en) * | 1984-11-07 | 1986-05-14 | Ebara Corp | Motor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2461113C2 (en) * | 2007-08-29 | 2012-09-10 | Шлюмбергер Текнолоджи Б.В. | System and method of submersible motor winding protection |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |