EP2433008B1 - Pitot tube pump - Google Patents

Pitot tube pump Download PDF

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Publication number
EP2433008B1
EP2433008B1 EP10714252.3A EP10714252A EP2433008B1 EP 2433008 B1 EP2433008 B1 EP 2433008B1 EP 10714252 A EP10714252 A EP 10714252A EP 2433008 B1 EP2433008 B1 EP 2433008B1
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EP
European Patent Office
Prior art keywords
pitot tube
hydraulic chamber
tube pump
rotor
dynamic seal
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EP10714252.3A
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German (de)
French (fr)
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EP2433008A1 (en
Inventor
Axel Binder
Christoph Emde
Christoph Keller
Christoph Jäger
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KSB SE and Co KGaA
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KSB SE and Co KGaA
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Publication of EP2433008A1 publication Critical patent/EP2433008A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/12—Pumps with scoops or like paring members protruding in the fluid circulating in a bowl
    • 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
    • F04D13/0673—Units comprising pumps and their driving means the pump being electrically driven the motor being of the inside-out type

Definitions

  • the present invention relates to a pitot tube with at least one supply line and at least one outgoing line and a hydraulic chamber and a drive.
  • pitot tubes are also known as pitot pumps, jet pumps, turbopumps or pumps with a pitite element.
  • Conventional pumps according to the pitot tube principle are driven by means of a bearing carrier and a motor coupled thereto.
  • On the opposite side of the hydraulic chamber are fluid connections and sealed by a dynamic seal passage of the pitot tube in the hydraulic chamber.
  • the dynamic seal is aligned with the hydraulic chamber via a housing enclosing the hydraulic chamber, which housing is connected to the bearing carrier.
  • a pitot tube pump are arranged in the motor and inlet and outlet from or to the pumping chamber on different sides of the pumping chamber.
  • a pitot tube pump are arranged in the motor and inlet and outlet from or to the pumping chamber on different sides of a pump chamber located within a housing.
  • the US 5,145,314 describes a pitot tube pump, wherein drive and fluid-carrying line are arranged on different sides of the pumping chamber.
  • the DE 11 2006 000 496 T5 describes a pitot tube pump with a pumping chamber in which a wear ring is inserted adjacent to the pitot tube within the pumping chamber in a groove. Drive and fluid-carrying lines are arranged in this pitot tube pump on different sides of the pump.
  • the WO 03/089788 A1 describes a pitot tube pump, are arranged in the pump drive and inlet and outlet from / to the pumping chamber on different sides of a pump chamber located within a housing.
  • the GB 493 333 A shows a further generic pitot tube.
  • the feeding and / or the discharging line may preferably be formed by axial bores along the longitudinal axis of the axis.
  • this axial bore (s) is / are connected to the connection or connections located in the projection, which are preferably designed as radial bores.
  • the rotor may be part of the hydraulic chamber.
  • the electric motor has at least one stator and at least one rotor, wherein the stator is rotatably connected to the axis and / or wherein the rotor is part of the hydraulic chamber and / or the rotor is non-rotatably connected to the hydraulic chamber.
  • the stator can for example also be part of the axis. But it can also be provided that the stator is positively and / or frictionally rotationally connected to the axis, such as by a press fit or by a tongue and groove connection.
  • the rotor may be formed, for example, by a wall or Wandungsausformung the hydraulic chamber. Just as well, however, is also possible that the rotor form fit and / or frictionally rotationally fixed, z. B.
  • connection with the hydraulic chamber is realized indirectly and / or directly. It may be sufficient, for example, if the rotor is attached to a component which is connected to a wall forming a wall of the hydraulic chamber forming element or a wall of the hydraulic chamber forming element.
  • the inventive arrangement has the advantage that the pitot tube pump can be made very compact. For example, a storage on both sides of the hydraulic chamber can be omitted.
  • no separate housing for the hydraulic chamber and the other components of the pitot tube pump is provided.
  • At least one bearing preferably the mounting of the movable components of the pitot tube pump, is arranged on the common side.
  • the standing axis has a projection which projects into the hydraulic chamber, wherein the feeding and discharging line opens into the approach or has a connection.
  • the connections can be realized by radial holes in the neck.
  • At least one pitot tube is provided, which is arranged on the approach. It is preferably provided that the pitot tube is connected to the terminal located at the approach of the laxative line.
  • the drive is an electric motor. This makes it possible to utilize a particularly advantageous type of drive.
  • the control or regulation of the pitot tube pump can thereby be made simple and advantageous.
  • a customary control or a customary control and / or control unit can be used.
  • a dynamic seal which seals a gap between the movable and immovable components of the pitot tube pump.
  • the dynamic seal seals the gap between the axle and a movable rotor carrier.
  • a dynamic seal is to be understood as a broad concept, which may include, for example, one or more radial shaft seals.
  • a component of a dynamic seal may be a sealing labyrinth which is functionally connected to the dynamic seal. In principle, however, it may already be sufficient if the dynamic seal is formed by a radial shaft seal.
  • a rotor carrier may for example be a rotatable about the stationary axis of the pitot tube pump component, preferably with the rotating hydraulic chamber communicates. The rotor carrier may be part of the hydraulic chamber or connected in rotation therewith. According to the invention it is provided in this context that the rotor carrier forms a wall of the hydraulic chamber.
  • a single dynamic seal is provided and / or that the dynamic seal is seated and / or running on the stationary axle or on the attachment of the axle.
  • the pitot tube has only a single gap to be sealed between the stationary axis and the rotor carrier.
  • a dynamic seal is provided.
  • a radial shaft seal is used such that the sealing lip rotatably rotor arm or the rotating about the axis of the component of the pitot tube pump is connected and rotates on the approach.
  • the hydraulic chamber has a removable lid. This results in the advantage that the hydraulic chamber is easily accessible. As a result, for example, a maintenance or inspection can be carried out quickly and easily.
  • the lid substantially surrounds or forms the hydraulic chamber and / or that the lid is fastened to a wall of the movable components of the pitot tube pump, preferably to the rotor carrier.
  • the lid engages over the pitot tube. This results in the advantage that during maintenance or inspection, the condition of the pitot tube can be easily checked. Further, if necessary, the pitot tube can be easily cleaned or replaced, since it is freely accessible due to the pitot tube overlapping lid upon removal of the lid.
  • the cover is arranged on the side opposite the common side of the hydraulic chamber. As a result, a simple removal of the lid is possible.
  • FIG. 1 shows a cross-sectional view through a pitot tube 10 according to the invention in this pitot tube 10 are on the in FIG. 1 Left side of the hydraulic chamber 20, the fluid ports 30 and 32, that is, the supply line 30 and the laxative line 32 is arranged.
  • the dynamic seal 40 and the bearing 50 and the drive 60th are on the in FIG. 1 Left side of the hydraulic chamber 20, the fluid ports 30 and 32, that is, the supply line 30 and the laxative line 32 is arranged.
  • the bearing 50 and the drive 60 are designed as an integrated storage and drive unit 70, d. H.
  • the storage 50 takes on both the task of supporting the rotating hydraulic chamber 20 and the storage of the drive 60. This results in the advantage of a much smaller footprint and significant cost advantages, since a variety of hitherto mandatory components such as clutch and bearing carrier according to the invention no longer necessary is.
  • the standing pitot tube 80 is inserted into the rotating hydraulic chamber 20 and sealed by means of a dynamic seal 40.
  • the pitot tube 80 is placed on the projection 92 of the standing shaft 90 and arranged on a 92 in approach Radial bore 33 connected.
  • This radial bore 33 is connected to the laxative line 32.
  • the supplying line 30 is connected to a radial bore 31 arranged in the shoulder 92, wherein the radial bore 32 allows an inflow of the supplied fluid into the hydraulic chamber 20.
  • the radial bores 31 and 33 are each perpendicular to the associated lines or holes 30 and 32nd
  • the drive 60 is designed as an external rotor motor and is located on the same side as the fluid ports 30 and 32.
  • the rotor 62 of the drive 60 is preferably already part of the hydraulic chamber 20 or as in FIG. 1 illustrated, directly or rotationally coupled to the hydraulic chamber 20, so that an additional coupling can be omitted.
  • the stator 64 of the drive 60 is rotationally fixed to the stationary axis 90 of the pitot tube 10.
  • the rotor 62 is rotatably mounted on a rotor carrier 100.
  • the rotor carrier 100 forms a wall of the hydraulic chamber 20 with a flange-like wall 102.
  • the lid 22 of the hydraulic chamber 20 is fixed to this flange-like wall 102 of the rotor carrier 100.
  • the actual interior of the hydraulic chamber 20 is formed by the recess in the cover 22.
  • the cover 22 engages both the shoulder 92 and the pitot tube 80, so that when removing the cover 22, the components located in the hydraulic chamber 20 are freely accessible.
  • the gap between the neck 92 of the standing axis 90 and the rotor arm 100 is.
  • this gap designed as a pressure-resistant radial shaft seal dynamic seal 40 is used, wherein the sealing lip of the radial shaft seal, for example, can run on the hardened neck 92.
  • the fluid to be pumped is supplied via the arranged in the axis 90 feeding line 30 to the hydraulic chamber 20 and after entering the standing pitot tube 80, which is connected at the end with the discharge line 32, discharged via the likewise arranged in the axis 90 discharging line 32.
  • a supply and discharge line may be provided for a cooling medium, by means of which the drive 60 and / or the hydraulic chamber 20 can be cooled.
  • a complete inspection of the drive 60 and the bearing 50 can be carried out by pulling down the rotor 62 from the stator 64 or from the axis 90.
  • the assembly or assembly of the pitot tube pump 10 is carried out after maintenance or inspection then in the reverse order as in disassembly.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Description

Die vorliegende Erfindung betrifft eine Staurohrpumpe mit wenigstens einer zuführenden Leitung und wenigstens einer abführenden Leitung sowie einer Hydraulikkammer und einem Antrieb.The present invention relates to a pitot tube with at least one supply line and at least one outgoing line and a hydraulic chamber and a drive.

Derartige Staurohrpumpen sind auch als Pitotpumpen, Jet-Pumpen, Turbopumpen oder Pumpen mit einem Pitotelement bekannt. Herkömmliche Pumpen nach dem Staurohrprinzip werden mittels eines Lagerträgers und eines hieran gekuppelten Motors angetrieben. Auf der gegenüberliegenden Seite der Hydraulikkammer befinden sich Fluidanschlüsse sowie die durch eine dynamische Dichtung abgedichtete Durchführung des Staurohres in die Hydraulikkammer. Die dynamische Dichtung wird dabei über ein die Hydraulikkammer umschließendes Gehäuse, welches mit dem Lagerträger verbunden ist, zur Hydraulikkammer hin ausgerichtet.Such pitot tubes are also known as pitot pumps, jet pumps, turbopumps or pumps with a pitite element. Conventional pumps according to the pitot tube principle are driven by means of a bearing carrier and a motor coupled thereto. On the opposite side of the hydraulic chamber are fluid connections and sealed by a dynamic seal passage of the pitot tube in the hydraulic chamber. In this case, the dynamic seal is aligned with the hydraulic chamber via a housing enclosing the hydraulic chamber, which housing is connected to the bearing carrier.

Die Nachteile der beschriebenen Ausführung ergeben sich durch fertigungsbedingte Fluchtungsfehler zwischen Lagerung der Hydraulikkammer mittels des Lagerträgers und der durch das Gehäuse getragenen gegenüberliegenden dynamischen Dichtung des Staurohres. Um die Funktion der Anordnung gewährleisten zu können, sind enge Fertigungstoleranzen sowie eine aufwändige Montage notwendig. Außerdem haben unvermeidliche Fluchtungsfehler zur Folge, dass ein erhöhter Verschleiß der dynamischen Dichtung stattfindet, was wiederum zwangsläufig bei längerer Standzeit zu einer Leckage bzw. einem Totalausfall der Dichtung führen kann. Somit sind regelmäßige Wartungsintervalle zwingend, um die dynamische Dichtung rechtzeitig auswechseln zu können. Ein weiterer Nachteil ist der große Platzbedarf der herkömmlichen Anordnungen.The disadvantages of the described embodiment result from production-related misalignment between storage of the hydraulic chamber by means of the bearing carrier and the housing carried by the opposite dynamic seal of the pitot tube. In order to ensure the function of the arrangement, tight manufacturing tolerances and a complex assembly are necessary. In addition, unavoidable misalignments have the consequence that increased wear of the dynamic seal takes place, which in turn inevitably leads to a longer service life Leakage or a total failure of the seal can lead. Thus, regular maintenance intervals are mandatory in order to replace the dynamic seal in good time. Another disadvantage is the large space requirement of the conventional arrangements.

Aus der US 4,875,826 ist eine Staurohrpumpe bekannt, die mehrere Pitotelemente in einer gekapselten Pumpkammer aufweist. Dabei sind Zulauf und Ablauf der Hydraulickammer auf unterschiedlichen Seiten der Pumpe angeordnet.From the US 4,875,826 is known a pitot tube pump having a plurality of pit elements in an encapsulated pumping chamber. In this case, inlet and outlet of the hydraulic chamber are arranged on different sides of the pump.

Aus der DE 10 2007 033 644 A1 ist eine Staurohrpumpe bekannt, bei der Motor und Zu- bzw. Ablauf von bzw. zu der Pumpkammer auf unterschiedlichen Seiten der Pumpkammer angeordnet sind.From the DE 10 2007 033 644 A1 is known a pitot tube pump, are arranged in the motor and inlet and outlet from or to the pumping chamber on different sides of the pumping chamber.

Aus der DE 10 2006 028 597 A1 ist eine Staurohrpumpe bekannt, bei der Motor und Zu- bzw. Ablauf von bzw. zu der Pumpkammer auf unterschiedlichen Seiten einer innerhalb eines Gehäuses befindlichen Pumpkammer angeordnet sind.From the DE 10 2006 028 597 A1 is known a pitot tube pump, are arranged in the motor and inlet and outlet from or to the pumping chamber on different sides of a pump chamber located within a housing.

Die US 5,145,314 beschreibt eine Staurohrpumpe, wobei Antrieb und fluidführende Leitung auf unterschiedlichen Seiten der Pumpkammer angeordnet sind. Dagegen zeigt die US 1,032,892 eine Staurohrpumpe mit wenigstens einer zuführenden Leitung und wenigstens einer abführenden Leitung sowie einer Hydraulikkammer und einem Antrieb. Antrieb, zuführende Leitung und abführende Leitung sind auf einer gemeinsamen Seite der Hydraulikkammer angeordnet.The US 5,145,314 describes a pitot tube pump, wherein drive and fluid-carrying line are arranged on different sides of the pumping chamber. In contrast, the shows US 1,032,892 a pitot tube with at least one supply line and at least one laxative line and a hydraulic chamber and a drive. Drive, supply line and laxative line are arranged on a common side of the hydraulic chamber.

Die DE 11 2006 000 496 T5 beschreibt eine Staurohrpumpe mit einer Pumpkammer, bei der ein Verschleißring benachbart zum Staurohr innerhalb der Pumpkammer in einer Nut eingesetzt ist. Antrieb und fluidführende Leitungen sind bei dieser Staurohrpumpe auf unterschiedlichen Seiten der Pumpe angeordnet.The DE 11 2006 000 496 T5 describes a pitot tube pump with a pumping chamber in which a wear ring is inserted adjacent to the pitot tube within the pumping chamber in a groove. Drive and fluid-carrying lines are arranged in this pitot tube pump on different sides of the pump.

Die WO 03/089788 A1 beschreibt eine Staurohrpumpe, bei der Pumpantrieb und Zu- bzw. Ablauf von/zur Pumpkammer auf unterschiedlichen Seiten einer innerhalb eines Gehäuses befindlichen Pumpkammer angeordnet sind.The WO 03/089788 A1 describes a pitot tube pump, are arranged in the pump drive and inlet and outlet from / to the pumping chamber on different sides of a pump chamber located within a housing.

Die GB 493 333 A zeigt eine weitere, gattungsgemäße Staurohrpumpe.The GB 493 333 A shows a further generic pitot tube.

Es ist daher die Aufgabe der vorliegenden Erfindung, eine Staurohrpumpe der eingangs genannten Art in vorteilhafter Weise weiterzubilden, insbesondere dahingehend, dass eine Staurohrpumpe einfacher und verschleißärmer aufgebaut werden kann, eine einfachere Wartung bzw. Inspektion ermöglicht ist und die Staurohrpumpe insgesamt kompakter ausgebaut ist.It is therefore an object of the present invention to develop a pitot tube pump of the type mentioned in an advantageous manner, in particular to the effect that a pitot tube pump can be constructed simpler and less wear, easier maintenance and inspection is possible and the pitot tube pump is constructed more compact overall.

Diese Aufgabe wird erfindungsgemäß durch eine Staurohrpumpe mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a pitot tube pump with the features of claim 1.

Die zuführende und/oder die abführende Leitung können vorzugsweise durch Axialbohrungen entlang der Längsachse der Achse ausgebildet sein. Vorteilhafterweise ist bzw. sind diese Axialbohrung(en) mit dem bzw. den im Ansatz befindlichen Anschluss bzw. Anschlüsse, die vorzugsweise als Radialbohrungen ausgeführt sind, konnektiert. Beispielsweise kann die im Ansatz der Achse angeordnete Radialbohrung senkrecht auf die den Ansatz nicht durchbrechende Axialbohrung der zu- bzw. abführenden Leitung treffen und somit einen Ablauf bzw. Zulauf zur Hydraulikkammer schaffen. Vorteilhafterweise kann der Rotor Bestandteil der Hydraulikkammer sein.The feeding and / or the discharging line may preferably be formed by axial bores along the longitudinal axis of the axis. Advantageously, this axial bore (s) is / are connected to the connection or connections located in the projection, which are preferably designed as radial bores. For example, arranged in the approach of the axis radial bore perpendicular to the neck not breaking through the axial bore of the incoming or discharging line and thus create a drain or inlet to the hydraulic chamber. Advantageously, the rotor may be part of the hydraulic chamber.

Der Elektromotor weist wenigstens einen Stator und wenigstens einen Rotor auf, wobei der Stator drehfest mit der Achse verbunden ist und/oder wobei der Rotor Bestandteil der Hydraulikkammer ist und/oder der Rotor drehfest mit der Hydraulikkammer verbunden ist. Der Stator kann dabei beispielsweise ebenfalls Bestandteil der Achse sein. Es kann aber auch vorgesehen sein, dass der Stator formschlüssig und/oder reibschlüssig drehfest mit der Achse verbunden ist, etwa durch eine Presspassung oder durch eine Nut-Passfeder-Verbindung. Der Rotor kann beispielsweise durch eine Wandung bzw. Wandungsausformung der Hydraulikkammer ausgebildet sein. Genauso gut ist jedoch ebenso möglich, dass der Rotor formschlüssig und/oder reibschlüssig drehfest, z. B. mittels Presspassung oder durch eine Nut-Passfeder-Verbindung mit der Hydraulickammer verbunden ist. Dabei ist es auch denkbar, dass die Verbindung mit der Hydraulikkammer mittelbar und/oder unmittelbar verwirklicht ist. Ausreichend kann es beispielsweise sein, wenn der Rotor an einem Bauteil befestigt ist, das mit einem eine Wandung der Hydraulikkammer ausbildenden Element verbunden ist oder ein eine Wandung der Hydraulikkammer ausbildendes Element ist.The electric motor has at least one stator and at least one rotor, wherein the stator is rotatably connected to the axis and / or wherein the rotor is part of the hydraulic chamber and / or the rotor is non-rotatably connected to the hydraulic chamber. The stator can for example also be part of the axis. But it can also be provided that the stator is positively and / or frictionally rotationally connected to the axis, such as by a press fit or by a tongue and groove connection. The rotor may be formed, for example, by a wall or Wandungsausformung the hydraulic chamber. Just as well, however, is also possible that the rotor form fit and / or frictionally rotationally fixed, z. B. is connected by means of interference fit or by a groove-key combination with the hydraulic chamber. It is also conceivable that the connection with the hydraulic chamber is realized indirectly and / or directly. It may be sufficient, for example, if the rotor is attached to a component which is connected to a wall forming a wall of the hydraulic chamber forming element or a wall of the hydraulic chamber forming element.

Durch die erfindungsgemäße Anordnung ergibt sich der Vorteil, dass die Staurohrpumpe sehr kompakt aufgebaut werden kann. Beispielsweise kann eine Lagerung zu beiden Seiten der Hydraulikkammer entfallen. Dadurch, dass die wesentlichen Komponenten der Staurohrpumpe auf einer gemeinsamen Seite von der Hydraulikkammer angeordnet sind, ergibt sich eine verbesserte Zugänglichkeit zur Hydraulikkammer. Hierdurch wird die Wartung und Inspektion vereinfacht. Vorteilhafterweise ist kein gesondertes Gehäuse für die Hydraulikkammer und die übrigen Komponenten der Staurohrpumpe vorgesehen.The inventive arrangement has the advantage that the pitot tube pump can be made very compact. For example, a storage on both sides of the hydraulic chamber can be omitted. The fact that the essential components of the pitot tube pump are arranged on a common side of the hydraulic chamber, results in improved accessibility to the hydraulic chamber. This simplifies maintenance and inspection. Advantageously, no separate housing for the hydraulic chamber and the other components of the pitot tube pump is provided.

Weiter ist denkbar, dass wenigstens ein Lager, vorzugsweise die Lagerung der beweglichen Komponenten der Staurohrpumpe auf der gemeinsamen Seite angeordnet ist. Insbesondere ergibt sich dadurch der Vorteil, dass sämtliche beweglichen und auch unbeweglichen Komponenten der Staurohrpumpe nur auf einer Seite der Hydraulickammer angeordnet sind, so dass die Hydraulikkammer über die frei bleibende Seite grundsätzlich frei zugänglich ist. Hierdurch wird die Wartung bzw. Inspektion deutlich vereinfacht.It is also conceivable that at least one bearing, preferably the mounting of the movable components of the pitot tube pump, is arranged on the common side. In particular, this results in the advantage that all movable and immovable components of the pitot tube pump are arranged only on one side of the hydraulic chamber, so that the hydraulic chamber on the free side basically freely accessible. As a result, the maintenance or inspection is significantly simplified.

Ferner ist möglich, dass die stehende Achse einen Ansatz aufweist, der in die Hydraulikkammer ragt, wobei die zuführende und abführende Leitung in dem Ansatz mündet bzw. einen Anschluss aufweist. Beispielsweise können die Anschlüsse durch Radialbohrungen im Ansatz verwirklicht werden.It is also possible that the standing axis has a projection which projects into the hydraulic chamber, wherein the feeding and discharging line opens into the approach or has a connection. For example, the connections can be realized by radial holes in the neck.

Des Weiteren kann vorgesehen sein, dass wenigstens ein Staurohr vorgesehen ist, das an dem Ansatz angeordnet ist. Vorzugsweise ist vorgesehen, dass das Staurohr an dem am Ansatz befindlichen Anschluss der abführenden Leitung angeschlossen ist.Furthermore, it can be provided that at least one pitot tube is provided, which is arranged on the approach. It is preferably provided that the pitot tube is connected to the terminal located at the approach of the laxative line.

Erfindungsgemäß ist der Antrieb ein Elektromotor. Hierdurch lässt sich eine besonders vorteilhafte Antriebsart nutzbar machen. Auch die Steuerung bzw. Regelung der Staurohrpumpe kann hierdurch einfach und vorteilhaft gestaltet werden. Hierzu kann eine fachübliche Ansteuerung bzw. eine fachübliche Steuerungs- und/oder Reglungseinheit verwendet werden.According to the invention, the drive is an electric motor. This makes it possible to utilize a particularly advantageous type of drive. The control or regulation of the pitot tube pump can thereby be made simple and advantageous. For this purpose, a customary control or a customary control and / or control unit can be used.

Ferner ist möglich, dass eine dynamische Dichtung vorgesehen ist, die einen Spalt zwischen den beweglichen und unbeweglichen Komponenten der Staurohrpumpe dichtet. Vorzugsweise dichtet die dynamische Dichtung den Spalt zwischen Achse und einem beweglichen Rotorträger. Eine dynamische Dichtung ist dabei als weit gefasster Begriff zu verstehen, der beispielsweise ein oder mehrere Radial-Wellendichtringe umfassen kann. Des Weiteren kann Bestandteil einer dynamischen Dichtung ein mit der dynamischen Dichtung in funktionalem Zusammenhang stehendes Dichtlabyrinth sein. Grundsätzlich kann es jedoch bereits ausreichen, wenn die dynamische Dichtung durch einen Radial-Wellendichtring ausgebildet ist. Ein Rotorträger kann beispielsweise ein um die stehende Achse der Staurohrpumpe drehbares Bauteil sein, das vorzugsweise mit der drehenden Hydraulikkammer in Verbindung steht. Der Rotorträger kann Bestandteil der Hydraulikkammer sein oder mit dieser drehfest verbunden sein. Erfindungsgemäß ist in diesem Zusammenhang vorgesehen, dass der Rotorträger eine Wandung der Hydraulikkammer ausbildet.It is also possible that a dynamic seal is provided which seals a gap between the movable and immovable components of the pitot tube pump. Preferably, the dynamic seal seals the gap between the axle and a movable rotor carrier. A dynamic seal is to be understood as a broad concept, which may include, for example, one or more radial shaft seals. Furthermore, a component of a dynamic seal may be a sealing labyrinth which is functionally connected to the dynamic seal. In principle, however, it may already be sufficient if the dynamic seal is formed by a radial shaft seal. A rotor carrier may for example be a rotatable about the stationary axis of the pitot tube pump component, preferably with the rotating hydraulic chamber communicates. The rotor carrier may be part of the hydraulic chamber or connected in rotation therewith. According to the invention it is provided in this context that the rotor carrier forms a wall of the hydraulic chamber.

Des Weiteren kann vorgesehen sein, dass eine einzige dynamische Dichtung vorgesehen ist und/oder dass die dynamische Dichtung auf der stehenden Achse bzw. auf dem Ansatz der Achse sitzt und/oder läuft. Vorzugsweise weist die Staurohrpumpe nur einen einzigen abzudichtenden Spalt zwischen der stehenden Achse und dem Rotorträger auf. Somit ergibt sich der Vorteil, dass nur an dieser Stelle eine dynamische Dichtung vorzusehen ist. Vorzugsweise wird ein Radial-Wellendichtring derart eingesetzt, dass die Dichtlippe drehfest Rotorträger bzw. dem um die Achse drehenden Bauteil der Staurohrpumpe verbunden ist und auf dem Ansatz umläuft. Dadurch ist es beispielsweise ausreichend, nur den Ansatz zu härten, wodurch die Standzeit der dynamischen Dichtung erhöht werden kann. Zugleich ist das Härten des Ansatzes vergleichsweise einfach und kostengünstig möglich.Furthermore, it can be provided that a single dynamic seal is provided and / or that the dynamic seal is seated and / or running on the stationary axle or on the attachment of the axle. Preferably, the pitot tube has only a single gap to be sealed between the stationary axis and the rotor carrier. Thus, there is the advantage that only at this point a dynamic seal is provided. Preferably, a radial shaft seal is used such that the sealing lip rotatably rotor arm or the rotating about the axis of the component of the pitot tube pump is connected and rotates on the approach. Thus, it is sufficient, for example, only to harden the approach, whereby the life of the dynamic seal can be increased. At the same time hardening of the approach is comparatively easy and inexpensive possible.

Es ist möglich, dass die Hydraulikkammer einen abnehmbaren Deckel aufweist. Dadurch ergibt sich der Vorteil, dass die Hydraulikkammer einfach zugänglich ist. Hierdurch kann beispielsweise eine Wartung oder Inspektion schnell und unproblematisch durchgeführt werden.It is possible that the hydraulic chamber has a removable lid. This results in the advantage that the hydraulic chamber is easily accessible. As a result, for example, a maintenance or inspection can be carried out quickly and easily.

Darüber hinaus ist denkbar, dass der Deckel die Hydraulikkammer im Wesentlichen umgreift bzw. ausbildet und/oder dass der Deckel an einer Wandung der beweglichen Komponenten der Staurohrpumpe, vorzugsweise an dem Rotorträger befestigt ist.In addition, it is conceivable that the lid substantially surrounds or forms the hydraulic chamber and / or that the lid is fastened to a wall of the movable components of the pitot tube pump, preferably to the rotor carrier.

Ferner ist möglich, dass der Deckel das Staurohr übergreift. Dadurch ergibt sich der Vorteil, dass bei einer Wartung oder Inspektion der Zustand des Staurohres einfach überprüft werden kann. Ferner kann gegebenenfalls das Staurohr einfach gereinigt oder ausgetauscht werden, da es aufgrund des das Staurohr übergreifenden Deckels bei Entfernung des Deckels frei zugänglich ist.It is also possible that the lid engages over the pitot tube. This results in the advantage that during maintenance or inspection, the condition of the pitot tube can be easily checked. Further, if necessary, the pitot tube can be easily cleaned or replaced, since it is freely accessible due to the pitot tube overlapping lid upon removal of the lid.

Bevorzugt wird es, wenn der Deckel auf der der gemeinsamen Seite gegenüberliegenden Seite der Hydraulikkammer angeordnet ist. Dadurch ist eine einfache Entfernung des Deckels möglich.It is preferred if the cover is arranged on the side opposite the common side of the hydraulic chamber. As a result, a simple removal of the lid is possible.

Besonders vorteilhaft ist es, wenn nach Demontage des Deckels die Hydraulikkammer und/oder das Staurohr zugänglich ist und/oder wenn der Rotorträger derart zugänglich wird, dass er von der stehenden Achse abziehbar ist.It when the hydraulic chamber and / or the pitot tube is accessible after disassembly of the lid and / or when the rotor carrier is accessible so that it is removable from the standing axis is particularly advantageous.

Weitere Einzelheiten und Vorteile der Erfindung sollen nun anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert werden.Further details and advantages of the invention will now be explained in more detail with reference to an embodiment shown in the drawing.

Es zeigt:

Figur 1:
eine Schnittzeichnung durch eine erfindungsgemäße Staurohrpumpe.
It shows:
FIG. 1:
a sectional drawing through a pitot tube according to the invention.

Figur 1 zeigt eine Schnittzeichnung durch eine erfindungsgemäße Staurohrpumpe 10. Bei dieser Staurohrpumpe 10 sind auf der in Figur 1 links dargestellten Seite der Hydraulikkammer 20 die Fluidanschlüsse 30 und 32, also die zuführende Leitung 30 und die abführende Leitung 32 angeordnet. Außerdem befinden sich in diesem Teil der Staurohrpumpe 10 bzw. auf dieser Seite auch die dynamische Dichtung 40 sowie die Lagerung 50 und der Antrieb 60. FIG. 1 shows a cross-sectional view through a pitot tube 10 according to the invention in this pitot tube 10 are on the in FIG. 1 Left side of the hydraulic chamber 20, the fluid ports 30 and 32, that is, the supply line 30 and the laxative line 32 is arranged. In addition, in this part of the pitot tube 10 or on this page, the dynamic seal 40 and the bearing 50 and the drive 60th

Die Lagerung 50 und der Antrieb 60 sind als integrierte Lager- und Antriebseinheit 70 ausgeführt, d. h. die Lagerung 50 übernimmt sowohl die Aufgabe der Lagerung der rotierenden Hydraulikkammer 20 als auch die Lagerung des Antriebs 60. Dadurch ergibt sich der Vorteil eines wesentlich geringeren Platzbedarfs sowie erheblicher Kostenvorteile, da eine Vielzahl von bislang zwingend erforderlichen Komponenten wie Kupplung und Lagerträger erfindungsgemäß nicht mehr notwendig ist.The bearing 50 and the drive 60 are designed as an integrated storage and drive unit 70, d. H. The storage 50 takes on both the task of supporting the rotating hydraulic chamber 20 and the storage of the drive 60. This results in the advantage of a much smaller footprint and significant cost advantages, since a variety of hitherto mandatory components such as clutch and bearing carrier according to the invention no longer necessary is.

Das stehende Staurohr 80 ist in die rotierende Hydraulikkammer 20 eingeführt und mittels einer dynamischen Dichtung 40 abgedichtet. Das Staurohr 80 ist dabei auf dem Ansatz 92 der stehenden Welle 90 aufgesetzt und an eine im Ansatz 92 angeordneten Radialbohrung 33 angeschlossen. Diese Radialbohrung 33 ist dabei mit der abführenden Leitung 32 verbunden. Auch die zuführende Leitung 30 ist mit einer im Ansatz 92 angeordneten Radialbohrung 31 verbunden, wobei die Radialbohrung 32 ein Einströmen des zugeführten Fluids in die Hydraulikkammer 20 ermöglicht. Die Radialbohrungen 31 und 33 stehen jeweils senkrecht auf den zugehörigen Leitungen bzw. Bohrungen 30 und 32.The standing pitot tube 80 is inserted into the rotating hydraulic chamber 20 and sealed by means of a dynamic seal 40. The pitot tube 80 is placed on the projection 92 of the standing shaft 90 and arranged on a 92 in approach Radial bore 33 connected. This radial bore 33 is connected to the laxative line 32. Also, the supplying line 30 is connected to a radial bore 31 arranged in the shoulder 92, wherein the radial bore 32 allows an inflow of the supplied fluid into the hydraulic chamber 20. The radial bores 31 and 33 are each perpendicular to the associated lines or holes 30 and 32nd

Der Antrieb 60 ist als Außenläufermotor ausgeführt und befindet sich auf der gleichen Seite wie die Fluidanschlüsse 30 und 32. Der Rotor 62 des Antriebs 60 ist vorzugsweise bereits ein Bestandteil der Hydraulikkammer 20 bzw. wie in Figur 1 dargestellt, direkt bzw. drehfest an die Hydraulikkammer 20 gekoppelt, so dass eine zusätzliche Kupplung entfallen kann. Der Stator 64 des Antriebs 60 ist drehfest an der stehenden Achse 90 der Staurohrpumpe 10.The drive 60 is designed as an external rotor motor and is located on the same side as the fluid ports 30 and 32. The rotor 62 of the drive 60 is preferably already part of the hydraulic chamber 20 or as in FIG. 1 illustrated, directly or rotationally coupled to the hydraulic chamber 20, so that an additional coupling can be omitted. The stator 64 of the drive 60 is rotationally fixed to the stationary axis 90 of the pitot tube 10.

Im in Fig. 1 dargestellten Ausführungsbeispiel ist der Rotor 62 auf einem Rotorträger 100 drehfest befestigt. Der Rotorträger 100 bildet dabei mit einer flanschartigen Wandung 102 eine Wandung der Hydraulikkammer 20 aus. Darüber hinaus ist der Deckel 22 der Hydraulikkammer 20 an dieser flanschartigen Wandung 102 des Rotorträgers 100 befestigt. Der eigentliche Innenraum der Hydraulikkammer 20 wird durch die Ausnehmung im Deckel 22 ausgebildet. Der Deckel 22 übergreift sowohl den Ansatz 92 als auch das Staurohr 80, so dass beim Abnehmen des Deckels 22 die in der Hydraulickammer 20 befindlichen Komponenten frei zugänglich sind.Im in Fig. 1 illustrated embodiment, the rotor 62 is rotatably mounted on a rotor carrier 100. The rotor carrier 100 forms a wall of the hydraulic chamber 20 with a flange-like wall 102. In addition, the lid 22 of the hydraulic chamber 20 is fixed to this flange-like wall 102 of the rotor carrier 100. The actual interior of the hydraulic chamber 20 is formed by the recess in the cover 22. The cover 22 engages both the shoulder 92 and the pitot tube 80, so that when removing the cover 22, the components located in the hydraulic chamber 20 are freely accessible.

Von besonderem Vorteil bei dem dargestellten Ausführungsbeispiel ist, dass der einzige abzudichtende Spalt zwischen bewegten und unbewegten Teilen der Staurohrpumpe 10 der Spalt zwischen Ansatz 92 der stehenden Achse 90 und dem Rotorträger 100 ist. Hierzu ist in diesem Spalt die als druckbeständiger Radial-Wellendichtring ausgeführte dynamische Dichtung 40 eingesetzt, wobei die Dichtlippe des Radial-Wellendichtrings beispielsweise auf dem gehärteten Ansatz 92 laufen kann.Of particular advantage in the illustrated embodiment is that the only sealed gap between moving and unmoving parts of the pitot tube 10, the gap between the neck 92 of the standing axis 90 and the rotor arm 100 is. For this purpose, in this gap designed as a pressure-resistant radial shaft seal dynamic seal 40 is used, wherein the sealing lip of the radial shaft seal, for example, can run on the hardened neck 92.

In der stehenden Achse 90 der Staurohrpumpe 10 wird das zu pumpende Fluid über die in der Achse 90 angeordnete zuführende Leitung 30 zur Hydraulikkammer 20 zugeführt und nach Eintritt in das stehende Staurohr 80, das mit der abführenden Leitung 32 endseitig verbunden ist, über die ebenfalls in der Achse 90 angeordnete abführenden Leitung 32 abgeführt.In the vertical axis 90 of the pitot tube pump 10, the fluid to be pumped is supplied via the arranged in the axis 90 feeding line 30 to the hydraulic chamber 20 and after entering the standing pitot tube 80, which is connected at the end with the discharge line 32, discharged via the likewise arranged in the axis 90 discharging line 32.

Grundsätzlich ist denkbar, dass in der stehenden Achse 90 eine nicht näher dargestellte Zuführ- und Abführleitung für ein Kühlmedium vorgesehen sein kann, mittels dessen der Antrieb 60 und/oder die Hydraulikkammer 20 gekühlt werden kann.In principle, it is conceivable that in the standing axis 90, a supply and discharge line, not shown, may be provided for a cooling medium, by means of which the drive 60 and / or the hydraulic chamber 20 can be cooled.

Durch die aufgrund der Anordnung stark verkürzte Toleranzkette zwischen Lagerung 50 und Einbauraum der dynamischen Dichtung 40 lässt sich eine einfachere und kostengünstigere Herstellung erreichen. Des Weiteren ist ein zuverlässigerer Betrieb bei verlängerten Standzeiten möglich, insbesondere aufgrund der weniger belasteten dynamischen Dichtung 40.Due to the greatly shortened due to the arrangement tolerance chain between storage 50 and installation space of the dynamic seal 40 can be a simpler and more cost-effective production can be achieved. Furthermore, a more reliable operation with extended service life is possible, in particular due to the less loaded dynamic seal 40th

Durch die Gesamtanordnung der Komponenten der Staurohrpumpe 10 ist eine einfache Montage möglich. Die Wartung der Hydraulikkammer 20 bzw. des Staurohres 80 ist deutlich vereinfacht. Nach Entfernen des Deckels 22 der Hydraulikkammer 20 sind sowohl die Hydraulikkammer 20 als auch das Staurohr 80 frei zugänglich.Due to the overall arrangement of the components of the pitot tube pump 10 a simple assembly is possible. The maintenance of the hydraulic chamber 20 and the pitot tube 80 is significantly simplified. After removal of the lid 22 of the hydraulic chamber 20, both the hydraulic chamber 20 and the pitot tube 80 are freely accessible.

Nach einer Demontage des Staurohres 80 kann durch Herunterziehen des Rotors 62 vom Stator 64 bzw. von der Achse 90 eine vollständige Inspektion des Antriebs 60 und der Lagerung 50 durchgeführt werden. Die Montage bzw. das Zusammensetzen der Staurohrpumpe 10 erfolgt nach Wartung bzw. Inspektion sodann in umgekehrter Reihenfolge wie bei der Demontage.After disassembly of the pitot tube 80, a complete inspection of the drive 60 and the bearing 50 can be carried out by pulling down the rotor 62 from the stator 64 or from the axis 90. The assembly or assembly of the pitot tube pump 10 is carried out after maintenance or inspection then in the reverse order as in disassembly.

Claims (11)

  1. Pitot tube pump (10) comprising at least one supply line (30) and at least one discharge line (32), as well as a hydraulic chamber (20) and a drive (60), wherein the drive (60), supply line (30) and discharge line (32) are arranged on a common side of the hydraulic chamber (20), wherein the drive (60) is an electric motor (60), and wherein the supply line and the discharge line (30, 32) are arranged in a fixed shaft (90) and wherein the electric motor has at least one stator (64) and at least one rotor (62), wherein the stator (64) is connected in a rotationally secure manner to the shaft (90) and wherein the rotor (62) is connected in a rotationally secure manner to the hydraulic chamber (20), characterized in that a rotor bracket (100) forms a wall of the hydraulic chamber (20).
  2. Pitot tube pump (10) according to Claim 1, characterized in that at least one bearing, preferably the mounting (50) of the moving components of the pitot tube pump (10), is arranged on the common side.
  3. Pitot tube pump (10) according to Claim 1 or 2, characterized in that the fixed shaft (90) has a protrusion (92) which projects into the hydraulic chamber (20), wherein the supply line and/or discharge line (30, 32) emerges in the protrusion (92) or has a port.
  4. Pitot tube pump (10) according to Claim 3, characterized in that at least one pitot tube (80) is provided, which pitot tube is arranged on the protrusion (92).
  5. Pitot tube pump (10) according to one of the preceding claims, characterized in that a dynamic seal (40) is provided, which dynamic seal seals a gap between the moving and non-moving components of the pitot tube pump (10), preferably the gap between the shaft (90) and a moving rotor bracket (100).
  6. Pitot tube pump (10) according to Claim 5, characterized in that a single dynamic seal (40) is provided, and/or in that the dynamic seal (40) is seated and/or runs on the fixed shaft (90), preferably on the protrusion (92) of the shaft (90).
  7. Pitot tube pump (10) according to one of the preceding claims, characterized in that the hydraulic chamber (20) has a removable cover (22).
  8. Pitot tube pump (10) according to Claim 7, characterized in that the cover (22) substantially embraces or forms the hydraulic chamber (20), and/or in that the cover (22) is fastened to a wall of the moving components of the pitot tube pump (10), preferably to the rotor bracket (100).
  9. Pitot tube pump (10) according to Claim 7 or 8, characterized in that the cover (22) overlaps the pitot tube (80).
  10. Pitot tube pump (10) according to one of Claims 7 to 9, characterized in that the cover (22) is arranged on that side of the hydraulic chamber (20) which lies opposite the common side.
  11. Pitot tube pump (10) according to one of Claims 7 to 10, characterized in that following disassembly of the cover (22), the hydraulic chamber (20) and/or the pitot tube (80) is accessible, and/or in that the rotor bracket (100) becomes accessible such that it can be pulled off the fixed shaft (90).
EP10714252.3A 2009-05-19 2010-04-15 Pitot tube pump Active EP2433008B1 (en)

Applications Claiming Priority (2)

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DE102009021922A DE102009021922B3 (en) 2009-05-19 2009-05-19 Pitot tube pump
PCT/EP2010/054920 WO2010133405A1 (en) 2009-05-19 2010-04-15 Pitot tube pump

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EP2433008A1 EP2433008A1 (en) 2012-03-28
EP2433008B1 true EP2433008B1 (en) 2019-06-12

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US (1) US8403625B2 (en)
EP (1) EP2433008B1 (en)
JP (1) JP2012527562A (en)
CN (1) CN102428278B (en)
AU (1) AU2010251423B2 (en)
DE (1) DE102009021922B3 (en)
WO (1) WO2010133405A1 (en)
ZA (1) ZA201108152B (en)

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US10151314B2 (en) 2013-03-15 2018-12-11 Envirotech Pumpsystems, Inc. Gear-driven flow-through pitot tube pump
CN104389791B (en) * 2014-11-20 2017-05-31 浙江胜发泵业有限公司 A kind of rotary-jet pump and improved method for improving volumetric efficiency

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US20120107093A1 (en) 2012-05-03
DE102009021922B3 (en) 2010-09-09
CN102428278B (en) 2014-08-27
CN102428278A (en) 2012-04-25
AU2010251423A1 (en) 2011-11-17
JP2012527562A (en) 2012-11-08
EP2433008A1 (en) 2012-03-28
WO2010133405A1 (en) 2010-11-25
AU2010251423B2 (en) 2012-12-20
US8403625B2 (en) 2013-03-26
ZA201108152B (en) 2012-07-25

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