EP2403750A2 - Turbomachine having a housing having increased impermeability - Google Patents

Turbomachine having a housing having increased impermeability

Info

Publication number
EP2403750A2
EP2403750A2 EP10706611A EP10706611A EP2403750A2 EP 2403750 A2 EP2403750 A2 EP 2403750A2 EP 10706611 A EP10706611 A EP 10706611A EP 10706611 A EP10706611 A EP 10706611A EP 2403750 A2 EP2403750 A2 EP 2403750A2
Authority
EP
European Patent Office
Prior art keywords
housing
turbomachine
transmission
propeller
shaft
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.)
Granted
Application number
EP10706611A
Other languages
German (de)
French (fr)
Other versions
EP2403750B1 (en
Inventor
Ernst-Christoph Krackhardt
Dierk SCHRÖDER
Jan Pellinghoff
Michael Wycisk
Robin De Ruiter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2403750A2 publication Critical patent/EP2403750A2/en
Application granted granted Critical
Publication of EP2403750B1 publication Critical patent/EP2403750B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts
    • B63H23/321—Bearings or seals specially adapted for propeller shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
    • B63H2005/1254—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis
    • B63H2005/1258—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis with electric power transmission to propellers, i.e. with integrated electric propeller motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts
    • B63H23/321—Bearings or seals specially adapted for propeller shafts
    • B63H2023/327—Sealings specially adapted for propeller shafts or stern tubes

Definitions

  • the invention relates to a turbomachine according to the preamble of patent claim 1;
  • a turbomachine is known, for example, from EP 1 972 545 A1.
  • EP 1 972 545 A1 discloses a turbomachine which serves as a pod drive for a ship.
  • the turbomachine comprises an underwater housing, which is arranged on the hull of the ship, a propeller, which is arranged outside the housing, and a propeller shaft, on which the propeller sits.
  • the propeller shaft is mounted in the housing.
  • the housing has a passage opening through which the propeller shaft is guided out of the housing.
  • a transmission in the form of a planetary gear is arranged, which is coupled to the propeller shaft and having a transmission housing.
  • a shaft seal seals the passage opening against entry of liquid into the housing.
  • the gear is spaced from the shaft seal.
  • the drive of the propeller shaft or of the propeller via the transmission is effected by a drive motor device, which contains, for example, an electric motor.
  • This electric motor can be arranged inside the housing or outside the housing in the hull.
  • the drive of the propeller shaft or the propeller takes place via a vertical shaft, which is guided from the ship's hull into the housing, and a ring gear and bevel gear arranged between the gearbox and the vertical shaft.
  • the transmission housing is at least partially filled with a transmission fluid and the shaft seal is applied to the transmission housing or is integrated into the transmission housing.
  • the resulting direct thermal contact between the seal and the transmission fluid makes it particularly easy to transfer heat from the seal to the transmission fluid.
  • the heat of the seal can thus be dissipated better than with the air inside the housing when the gear is spaced from the shaft seal. As a result, the thermal load of the seal can be improved and the risk of leaks can be reduced.
  • the transmission can be designed as a single or multi-stage transmission. Furthermore, the transmission can be designed as a mechanical transmission, in particular a planetary gear, wherein it may then be a lubricant in the transmission fluid.
  • the transmission can also be designed as a hydraulic transmission, in particular as a hydrodynamic transmission, wherein the transmission fluid can then be the operating fluid of the transmission.
  • the transmission may be connected to another machine, e.g. an electric machine or an internal combustion engine, be coupled.
  • another machine e.g. an electric machine or an internal combustion engine
  • the transmission is coupled to an electric machine, which is also arranged within the housing of the flow machine.
  • the housing When coupled with an electric machine, a hydrodynamically particularly advantageous form of the housing is possible in that the transmission is designed such that during operation of the turbomachine, the rotational speed of the electric
  • Machine is greater than the speed of the propeller shaft (eg 4 to 5 times the propeller speed). As an electric machine, a high-speed machine can then be used. the one that has smaller dimensions than a machine running at the propeller speed. This is especially true when using the turbomachine as a drive device for a floating or diving device.
  • the electric machine can be designed as an electric motor that drives the propeller.
  • electrical motors are a variety of electric motors such.
  • Asynchronous or synchronous motors are possible, which can be excited by permanent magnets or a winding system, which can also be implemented in HTS (high-temperature superconductor) technology.
  • the electric machine can also be designed as a generator, which is driven by the propeller.
  • At least part of the transmission housing itself already forms part of the housing of the turbomachine. As a result, the weight and the size of the turbomachine can be reduced.
  • this preferably comprises a motor housing for its protection.
  • At least a part of the motor housing may form part of the housing of the turbomachine.
  • the motor housing rests against the gear housing, the motor can be particularly well protected against liquid entering the housing.
  • a turbomachine according to the invention may have on its side facing away from the propeller a further above-described arrangement according to the invention of a propeller, a propeller shaft, a shaft seal and a gear, wherein the propeller shaft or the propeller is coupled to the same electric machine or to a second electric machine could be.
  • the two propellers can rotate in the same direction or even contrarotate, the rotational speeds may be the same or different. In such an arrangement with two gearboxes and two propellers distribute the mechanical loads on two gearboxes with constant drive power, so that they can be designed smaller.
  • the turbomachine may advantageously be modularly constructed from at least one or two propeller modules, one or two Getriebemo- modules and one or two motor modules.
  • the modules can be provided by a modular system comprising gear modules, motor modules and propeller modules of different power classes and characteristics, reduction ratios, rotational speeds, directions of rotation, etc.
  • a turbomachine can then be assembled, for example, as needed, from the following modules, which are lined up in the order given: - a motor module, a transmission module and a traction propeller module,
  • a pressure propeller module a transmission module and a motor module
  • a pressure propeller module a first transmission module, an engine module, a second transmission module and a traction propeller module, wherein the engine of the engine module drives both transmissions or both propellers, a motor, a first engine module, a second engine module, a second transmission module and a traction propeller module, wherein the engine of the first engine module, the transmission of the first transmission module or the pressure propeller and the engine of the second engine module, the transmission of the second transmission module or . the drive propeller drives.
  • turbomachine lies in a drive device for a floating or submersing device, such. a ship or an offshore platform, wherein the turbomachine, preferably horizontally and / or vertically rotatable, is attached to a hull of the floating or diving device.
  • turbomachine can be advantageously used as a pump, a fan or a compressor.
  • turbomachine can be used as a turbine, in particular for power generation in a floating or diving device, in a flow or tidal power plant or in a wind turbine.
  • FIG. 1 shows a turbomachine with a shaft seal integrated into a transmission housing
  • FIG. 2 shows the turbomachine of FIG. 1 with a vertical shaft (L version), FIG.
  • FIG 3 shows the turbomachine of FIG 1 with a voltage applied to a transmission housing shaft seal.
  • 1 shows a simplified and schematic representation of a partial longitudinal section through a turbomachine 1, which serves as a drive device for a floating or diving device such as a ship or an offshore platform and this purpose is rotatably mounted about an axis A on the hull 10 of the floating device ,
  • a drive device is often referred to as a rudder propeller or pod drive and usually has a drive power of 0.5 - 10 MW.
  • the turbomachine 1 comprises a hydrodynamically optimized designed underwater housing 2, which is arranged on the hull 10 of the ship, a propeller 3, which is arranged outside of the housing 2, and a propeller shaft 4, on which the propeller 3 is seated.
  • the propeller shaft 4 is rotatably supported by bearings 12 within the housing 2 and led out of the housing 2 via a passage opening 5.
  • a planetary gear 6 is coupled to the propeller shaft 4 and includes a transmission housing 7 which is filled with a transmission fluid 8 in the form of oil or other lubricant.
  • the gear housing 7 forms with its peripheral surface a part of the circumferential surface of the housing 2 of the turbomachine. Both the passage opening 5 and the shaft seal 9 are thus an integral part of the transmission housing. 7
  • a shaft seal 9 seals the passage opening 5 against entry of liquid from outside the housing 2 into an interior of the housing 2.
  • an electric machine in the form of an electric motor 11 for driving the propeller 3, the electric motor 6 being coupled to the propeller shaft 4 or to the propeller 3 by means of the gear 6.
  • the electric motor 11 comprises a motor housing 13, wherein the peripheral surface of this housing 13 forms a part of the peripheral surface of the housing 2 of the turbomachine 1.
  • the gear housing 7 rests on the motor housing 13, so that the electric motor 11 is well protected against a through the passage opening 5 into the interior of the housing 2 entering liquid.
  • the electric motor 11 is designed as a high-speed machine, wherein the planetary gear 6 is designed such that during operation of the turbomachine 1, the rotational speed of the electric machine 11 is greater than that
  • Speed of the propeller shaft 4 (e.g., 4 to 5 times the propeller speed).
  • a cooling of the electric motor 11 takes place at least for the most part by a heat transfer through the housing 2 of the turbomachine 1 to the seawater outside the turbomachine 1.
  • FIG. 2 shows the turbomachine 1 of FIG. 1, but with no electric motor in the interior of the housing 2.
  • the propeller shaft 3 is coupled via the gear 6 with a vertical shaft 21 (L-arrangement), which is coupled to an electric motor not shown in detail, which is arranged in the interior of the hull 10.
  • a crown-bevel gear 22 is arranged for transmitting power between the propeller shaft 4 and the vertical shaft 21 in the drive train between the planetary gear 6 and the vertical shaft 21.
  • FIG. 3 shows the turbomachine 1 of FIG. 1 with a shaft seal 9 integrated into the housing 2 and resting against the transmission housing 7 instead of a shaft seal integrated into the transmission housing 7.
  • the turbomachines 1 of FIGS. 1-3 may each have a further arrangement according to the invention described above of a propeller, a propeller shaft, a shaft seal and a gear on its side facing away from the propeller 3, wherein the propeller shaft or the propeller with the same electric machine 11 or can be coupled with a second electric machine.
  • the two propellers can rotate in the same direction or even contrarotate, the rotational speeds may be the same or different.
  • the turbomachines 1 of FIGS. 1-3 are modularly constructed from a pressure propeller module 23, a transmission module 24, a motor module 25 and an end cap module 26.
  • the modules 23-26 are components of a modular construction system. includes transmission modules, motor modules and propeller modules of different power classes and characteristics, reduction ratios, rotational speeds, directions of rotation, etc.

Abstract

The invention relates to a turbomachine having a housing (2), at least one propeller (3) outside of the housing (2), a propeller shaft (4) that is coupled to the propeller (3), wherein the propeller shaft (4) is mounted within the housing (2) and led out of the housing (2) via an opening (5), a transmission (6) that is coupled to the propeller shaft (4), wherein the transmission (6) is arranged within the housing (2) and comprises a transmission housing (7) and a shaft seal (9) that seals the opening (5) against the entry of fluid into the housing (2), the transmission housing (7) is at least partially filled with a transmission fluid (8) and the shaft seal (9) contacts the transmission housing (7) or is integrated in the transmission housing (7). Mechanical and thermal stress to the shaft seal and, consequently, the risk of leaks can thus be reduced.

Description

Beschreibungdescription
Strömungsmaschine mit einem Gehäuse mit erhöhter DichtheitTurbomachine with a housing with increased tightness
Die Erfindung betrifft eine Strömungsmaschine gemäß Oberbegriff des Patentanspruchs 1; eine derartige Strömungsmaschine ist beispielsweise durch die EP 1 972 545 Al bekannt.The invention relates to a turbomachine according to the preamble of patent claim 1; Such a turbomachine is known, for example, from EP 1 972 545 A1.
Die EP 1 972 545 Al offenbart eine Strömungsmaschine, die als Pod-Antrieb für ein Schiff dient. Die Strömungsmaschine um- fasst ein Unterwassergehäuse, das an dem Rumpf des Schiffes angeordnet ist, einen Propeller, der außerhalb des Gehäuses angeordnet ist, und eine Propellerwelle, auf der der Propeller sitzt. Die Propellerwelle ist in dem Gehäuse gelagert. Das Gehäuse weist eine Durchtrittsöffnung auf, über die die Propellerwelle aus dem Gehäuse heraus geführt ist. Innerhalb des Gehäuses ist ein Getriebe in Form eines Planetengetriebes angeordnet, das mit der Propellerwelle gekoppelt ist und ein Getriebegehäuse aufweist. Eine Wellendichtung dichtet die Durchtrittsöffnung gegen einen Eintritt von Flüssigkeit in das Gehäuse ab. Das Getriebe ist dabei von der Wellendichtung beabstandet .EP 1 972 545 A1 discloses a turbomachine which serves as a pod drive for a ship. The turbomachine comprises an underwater housing, which is arranged on the hull of the ship, a propeller, which is arranged outside the housing, and a propeller shaft, on which the propeller sits. The propeller shaft is mounted in the housing. The housing has a passage opening through which the propeller shaft is guided out of the housing. Within the housing, a transmission in the form of a planetary gear is arranged, which is coupled to the propeller shaft and having a transmission housing. A shaft seal seals the passage opening against entry of liquid into the housing. The gear is spaced from the shaft seal.
Der Antrieb der Propellerwelle bzw. des Propellers über das Getriebe erfolgt durch eine Antriebsmotoreneinrichtung, die beispielsweise einen elektrischen Motor enthält. Dieser elektrische Motor kann im Inneren des Gehäuses oder außerhalb des Gehäuses im Schiffsrumpf angeordnet sein. Bei einer Anordnung im Schiffsrumpf erfolgt der Antrieb der Propellerwel- Ie bzw. des Propellers über eine Vertikalwelle, die von dem Schiffsrumpf in das Gehäuse geführt ist, und einem zwischen dem Getriebe und der Vertikalwelle angeordneten Tellerrad-Kegelrad-Getriebe .The drive of the propeller shaft or of the propeller via the transmission is effected by a drive motor device, which contains, for example, an electric motor. This electric motor can be arranged inside the housing or outside the housing in the hull. In an arrangement in the ship's hull, the drive of the propeller shaft or the propeller takes place via a vertical shaft, which is guided from the ship's hull into the housing, and a ring gear and bevel gear arranged between the gearbox and the vertical shaft.
Mit der vorstehend beschriebenen Lösung ist bereits ein hoher Grad an Dichtheit der Strömungsmaschine gegeben. Beim Betrieb der Strömungsmaschine liegt jedoch an der Wellendichtung eine relativ hohe Druckdifferenz zwischen der sich außerhalb der Strömungsmaschine befindlichen Flüssigkeit (z.B. Meerwasser) und dem üblicherweise mit Luft gefüllten Innenraum an. Außerdem erwärmt sich die Dichtung aufgrund von Reibung an der sich drehenden Welle. Dies führt zu hohen mechanischen und thermischen Belastungen der Wellendichtung, die im Extremfall zu einer Undichtigkeit der Dichtung und somit zu einem Eintritt von Flüssigkeit in das Gehäuse führen können.With the solution described above, a high degree of tightness of the turbomachine is already given. During operation of the turbomachine, however, there is a relatively high pressure difference between the outside of the shaft seal and the outside Turbine fluid located (eg seawater) and the usually filled with air inside space. In addition, the seal heats up due to friction on the rotating shaft. This leads to high mechanical and thermal loads on the shaft seal, which in extreme cases can lead to leaking of the seal and thus to the ingress of liquid into the housing.
Es ist deshalb Aufgabe vorliegender Erfindung, bei einer Strömungsmaschine gemäß Oberbegriff des Patentanspruchs 1 die Dichtheit noch weiter zu verbessern. Außerdem ist es Aufgabe vorliegender Erfindung, besonders vorteilhafte Verwendungen einer derartigen Strömungsmaschine anzugeben.It is therefore an object of the present invention, in a turbomachine according to the preamble of claim 1 to improve the tightness even further. Moreover, it is an object of the present invention to provide particularly advantageous uses of such a turbomachine.
Die Lösung dieser Aufgabe gelingt durch eine Strömungsmaschine gemäß Patentanspruch 1. Vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche 2 bis 10. Besonders vorteilhafte Verwendungen der erfindungsgemäßen Strömungsmaschine sind Gegenstand der Patentansprüche 11 bis 13.The solution of this object is achieved by a turbomachine according to claim 1. Advantageous embodiments are the subject of the dependent claims 2 to 10. Particularly advantageous uses of the turbomachine according to the invention are the subject of claims 11 to 13.
Erfindungsgemäß ist das Getriebegehäuse zumindest teilweise mit einer Getriebeflüssigkeit gefüllt und die Wellendichtung liegt an dem Getriebegehäuse an oder ist in das Getriebegehäuse integriert. Über den hierdurch entstehenden direkten thermischen Kontakt zwischen der Dichtung und der Getriebeflüssigkeit kann besonders leicht Wärme von der Dichtung an die Getriebeflüssigkeit übertragen werden. Die Wärme der Dichtung kann somit besser abgeführt werden als mit der im Inneren des Gehäuses befindlichen Luft, wenn das Getriebe von der Wellendichtung beabstandet ist. Hierdurch kann die thermische Belastung der Dichtung verbessert und die Gefahr von Undichtigkeiten verringert werden.According to the transmission housing is at least partially filled with a transmission fluid and the shaft seal is applied to the transmission housing or is integrated into the transmission housing. The resulting direct thermal contact between the seal and the transmission fluid makes it particularly easy to transfer heat from the seal to the transmission fluid. The heat of the seal can thus be dissipated better than with the air inside the housing when the gear is spaced from the shaft seal. As a result, the thermal load of the seal can be improved and the risk of leaks can be reduced.
Zusätzlich wird die an der Wellendichtung anliegende Druck- differenz und somit die mechanische Belastung der Dichtung reduziert, wodurch ebenfalls die Gefahr von Undichtigkeiten der Dichtung verringert wird. Bei einer Anordnung der elektrischen Maschine innerhalb des Gehäuses der Strömungsmaschine wird weiterhin sichergestellt, dass bei einer schadhaften Wellendichtung eine von außen in das Gehäuse eindringende Flüssigkeit, z.B. Meerwasser, nicht direkt auf die elektrische Maschine, sondern zuerst auf das Getriebe trifft. Hierdurch kann die elektrische Maschine besser gegen eine eindringende Flüssigkeit geschützt werden.In addition, the pressure difference applied to the shaft seal and thus the mechanical stress on the seal are reduced, which also reduces the risk of leaks in the seal. In an arrangement of the electric machine within the housing of the turbomachine is further ensured that in a defective shaft seal a penetrating from the outside into the housing liquid, eg seawater, does not hit directly on the electric machine, but first on the transmission. As a result, the electrical machine can be better protected against an ingress of liquid.
Nicht zuletzt kann durch die Erfindung die Ausdehnung der Strömungsmaschine in Richtung der Propellerwelle verkleinert werden, was in einigen Anwendungsfällen zu einer hydrodynamisch besseren Form der Strömungsmaschine führen kann.Not least can be reduced by the invention, the expansion of the turbomachine in the direction of the propeller shaft, which may result in some applications to a hydrodynamically better shape of the turbomachine.
Das Getriebe kann als ein ein- oder mehrstufiges Getriebe ausgebildet sein. Weiterhin kann das Getriebe als ein mechanisches Getriebe, insbesondere ein Planetengetriebe ausgebildet sein, wobei es sich bei der Getriebeflüssigkeit dann um ein Schmiermittel handeln kann. Das Getriebe kann auch als ein hydraulisches Getriebe, insbesondere als ein hydrodynami- sches Getriebe ausgebildet sein, wobei es sich bei der Getriebeflüssigkeit dann um die Betriebsflüssigkeit des Getriebes handeln kann.The transmission can be designed as a single or multi-stage transmission. Furthermore, the transmission can be designed as a mechanical transmission, in particular a planetary gear, wherein it may then be a lubricant in the transmission fluid. The transmission can also be designed as a hydraulic transmission, in particular as a hydrodynamic transmission, wherein the transmission fluid can then be the operating fluid of the transmission.
Das Getriebe kann mit einer weiteren Maschine, wie z.B. einer elektrischen Maschine oder einer Verbrennungskraftmaschine, gekoppelt sein.The transmission may be connected to another machine, e.g. an electric machine or an internal combustion engine, be coupled.
Bevorzugt ist das Getriebe mit einer elektrischen Maschine gekoppelt, die ebenfalls innerhalb des Gehäuses der Strö- mungsmaschine angeordnet ist.Preferably, the transmission is coupled to an electric machine, which is also arranged within the housing of the flow machine.
Bei Kopplung mit einer elektrischen Maschine ist eine hydrodynamisch besonders vorteilhafte Form des Gehäuses dadurch möglich, dass das Getriebe derart ausgebildet ist, dass beim Betrieb der Strömungsmaschine die Drehzahl der elektrischenWhen coupled with an electric machine, a hydrodynamically particularly advantageous form of the housing is possible in that the transmission is designed such that during operation of the turbomachine, the rotational speed of the electric
Maschine größer ist als die Drehzahl der Propellerwelle (z.B. 4 bis 5faches der Propellerdrehzahl) . Als elektrische Maschine kann dann eine schnell laufende Maschine eingesetzt wer- den, die kleinere Abmessungen als eine mit der Propellerdrehzahl laufende Maschine hat. Dies gilt insbesondere bei einer Verwendung der Strömungsmaschine als eine Antriebseinrichtung für eine schwimmende oder tauchende Einrichtung.Machine is greater than the speed of the propeller shaft (eg 4 to 5 times the propeller speed). As an electric machine, a high-speed machine can then be used. the one that has smaller dimensions than a machine running at the propeller speed. This is especially true when using the turbomachine as a drive device for a floating or diving device.
Die elektrische Maschine kann dabei als ein elektrischer Motor ausgebildet sein, der den Propeller antreibt. Als elektrische Motoren sind unterschiedlichste Elektromotoren wie z.B. Asynchron oder Synchronmotoren möglich, die durch Perma- nentmagnete oder ein Wicklungssystem erregt sein können, wobei diese auch in HTS (Hochtemperatur-Supraleiter) -Technik ausgeführt sein können.The electric machine can be designed as an electric motor that drives the propeller. As electrical motors are a variety of electric motors such. Asynchronous or synchronous motors are possible, which can be excited by permanent magnets or a winding system, which can also be implemented in HTS (high-temperature superconductor) technology.
Die elektrische Maschine kann aber auch als ein Generator ausgebildet sein, der von dem Propeller angetrieben wird.The electric machine can also be designed as a generator, which is driven by the propeller.
In einer konstruktiv besonders einfachen Ausgestaltung bildet zumindest ein Teil des Getriebegehäuses selbst bereits einen Teil des Gehäuses der Strömungsmaschine. Hierdurch können das Gewicht und die Abmessung der Strömungsmaschine verringert werden .In a structurally particularly simple embodiment, at least part of the transmission housing itself already forms part of the housing of the turbomachine. As a result, the weight and the size of the turbomachine can be reduced.
Bei Verwendung eines im Inneren des Gehäuses angeordneten Elektromotors umfasst dieser zu seinem Schutz bevorzugt ein Motorgehäuse.When using an electric motor arranged in the interior of the housing, this preferably comprises a motor housing for its protection.
Zur weiteren Reduzierung des Gewichts und der Abmessungen der Strömungsmaschine kann zumindest ein Teil des Motorgehäuses einen Teil des Gehäuses der Strömungsmaschine bilden.To further reduce the weight and dimensions of the turbomachine, at least a part of the motor housing may form part of the housing of the turbomachine.
Wenn das Motorgehäuse an dem Getriebegehäuse anliegt, kann der Motor besonders gut gegen in das Gehäuse eindringende Flüssigkeit geschützt werden.If the motor housing rests against the gear housing, the motor can be particularly well protected against liquid entering the housing.
Von besonderem Vorteil erfolgt eine Kühlung der elektrischen Maschine durch eine Wärmeübertragung durch das Gehäuse der Strömungsmaschine hindurch an eine Flüssigkeit außerhalb des Gehäuses . Eine erfindungsgemäße Strömungsmaschine kann auf ihrer dem Propeller abgewandten Seite eine weitere vorstehend geschilderte erfindungsgemäße Anordnung eines Propellers, einer Propellerwelle, einer Wellendichtung und eines Getriebes aufwei- sen, wobei die Propellerwelle bzw. der Propeller mit der gleichen elektrischen Maschine oder mit einer zweiten elektrischen Maschine gekoppelt sein können. Die beiden Propeller können dabei in gleicher Richtung rotieren oder auch kontrarotieren, wobei die Drehgeschwindigkeiten gleich oder auch unterschiedlich sein können. Bei einer derartigen Anordnung mit zwei Getrieben und zwei Propellern verteilen sich bei gleichbleibender Antriebsleistung die mechanischen Belastungen auf zwei Getriebe, so dass diese kleiner ausgelegt werden können .Of particular advantage is a cooling of the electric machine by a heat transfer through the housing of the turbomachine through to a liquid outside the housing. A turbomachine according to the invention may have on its side facing away from the propeller a further above-described arrangement according to the invention of a propeller, a propeller shaft, a shaft seal and a gear, wherein the propeller shaft or the propeller is coupled to the same electric machine or to a second electric machine could be. The two propellers can rotate in the same direction or even contrarotate, the rotational speeds may be the same or different. In such an arrangement with two gearboxes and two propellers distribute the mechanical loads on two gearboxes with constant drive power, so that they can be designed smaller.
Wenn das Gehäuse der Strömungsmaschine zumindest zum Teil durch das Getriebegehäuse und das Motorgehäuse gebildet wird, kann die Strömungsmaschine vorteilhaft modular aus zumindest einem oder zwei Propellermodulen, einem oder zwei Getriebemo- dulen und einem oder zwei Motormodulen aufgebaut sein. Die Module können dabei durch ein modulares Baukastensystem bereitgestellt werden, das Getriebemodule, Motormodule und Propellermodule unterschiedlicher Leistungsklassen und - Charakteristiken, Untersetzungsverhältnissen, Drehgeschwin- digkeiten, Drehrichtungen, etc. umfasst.If the housing of the turbomachine is at least partially formed by the gear housing and the motor housing, the turbomachine may advantageously be modularly constructed from at least one or two propeller modules, one or two Getriebemo- modules and one or two motor modules. The modules can be provided by a modular system comprising gear modules, motor modules and propeller modules of different power classes and characteristics, reduction ratios, rotational speeds, directions of rotation, etc.
Eine Strömungsmaschine kann dann beispielsweise je nach Bedarf aus folgenden Modulen zusammengesetzt werden, die in der angegebenen Reihenfolge aneinander gereiht werden: - einem Motormodul, einem Getriebemodul und einem Zugpropellermodul,A turbomachine can then be assembled, for example, as needed, from the following modules, which are lined up in the order given: - a motor module, a transmission module and a traction propeller module,
- einem Druckpropellermodul, einem Getriebemodul und einem Motormodul,a pressure propeller module, a transmission module and a motor module,
- einem Druckpropellermodul, einem ersten Getriebemodul, ei- nem Motormodul, einem zweiten Getriebemodul und einem Zugpropellermodul, wobei der Motor des Motormoduls beide Getriebe bzw. beide Propeller antreibt, - einem Druckpropellermodul, einem ersten Getriebemodul, einem ersten Motormodul, einem zweiten Motormodul, einem zweiten Getriebemodul und einem Zugpropellermodul, wobei der Motor des ersten Motormoduls das Getriebe des ersten Getriebemoduls bzw. den Druckpropeller und der Motor des zweiten Motormoduls das Getriebe des zweiten Getriebemoduls bzw. den Zugpropeller antreibt.a pressure propeller module, a first transmission module, an engine module, a second transmission module and a traction propeller module, wherein the engine of the engine module drives both transmissions or both propellers, a motor, a first engine module, a second engine module, a second transmission module and a traction propeller module, wherein the engine of the first engine module, the transmission of the first transmission module or the pressure propeller and the engine of the second engine module, the transmission of the second transmission module or . the drive propeller drives.
Eine besonders vorteilhafte Verwendung der erfindungsgemäßen Strömungsmaschine liegt in einer Antriebseinrichtung für eine schwimmende oder tauchende Einrichtung, wie z.B. ein Schiff oder eine Offshore-Plattform, wobei die Strömungsmaschine, vorzugsweise horizontal und/oder vertikal drehbar, an einem Rumpf der schwimmenden oder tauchenden Einrichtung befestigt ist.A particularly advantageous use of the turbomachine according to the invention lies in a drive device for a floating or submersing device, such. a ship or an offshore platform, wherein the turbomachine, preferably horizontally and / or vertically rotatable, is attached to a hull of the floating or diving device.
Weiterhin kann die Strömungsmaschine vorteilhaft als eine Pumpe, ein Ventilator oder ein Verdichter verwendet werden.Furthermore, the turbomachine can be advantageously used as a pump, a fan or a compressor.
Außerdem kann die Strömungsmaschine als eine Turbine verwendet werden, insbesondere zur Stromerzeugung bei einer schwimmenden oder tauchenden Einrichtung, in einem Strömungs- oder Gezeitenkraftwerk oder in einer Windkraftanlage.In addition, the turbomachine can be used as a turbine, in particular for power generation in a floating or diving device, in a flow or tidal power plant or in a wind turbine.
Die Erfindung sowie weitere vorteilhafte Ausgestaltungen der Erfindung gemäß Merkmalen der Unteransprüche werden im Folgenden anhand von Ausführungsbeispielen in den Figuren näher erläutert; dabei zeigt:The invention and further advantageous embodiments of the invention according to features of the subclaims are explained in more detail below with reference to exemplary embodiments in the figures; showing:
FIG 1 eine Strömungsmaschine mit einer in ein Getriebegehäuse integrierten Wellendichtung1 shows a turbomachine with a shaft seal integrated into a transmission housing
FIG 2 die Strömungsmaschine von FIG 1 mit einer Vertikalwelle (L-Ausführung) ,2 shows the turbomachine of FIG. 1 with a vertical shaft (L version), FIG.
FIG 3 die Strömungsmaschine von FIG 1 mit einer an ein Getriebegehäuse anliegenden Wellendichtung. FIG 1 zeigt in vereinfachter und schematischer Darstellung einen teilweisen Längsschnitt durch eine Strömungsmaschine 1, die als Antriebseinrichtung für eine schwimmende oder tauchende Einrichtung wie z.B. ein Schiff oder eine Offshore- Plattform dient und hierzu um eine Achse A drehbar am Rumpf 10 der schwimmenden Einrichtung befestigt ist. Eine derartige Antriebseinrichtung wird häufig auch als Ruderpropeller oder als Pod-Antrieb bezeichnet und hat üblicherweise eine Antriebsleistung von 0.5 - 10 MW.3 shows the turbomachine of FIG 1 with a voltage applied to a transmission housing shaft seal. 1 shows a simplified and schematic representation of a partial longitudinal section through a turbomachine 1, which serves as a drive device for a floating or diving device such as a ship or an offshore platform and this purpose is rotatably mounted about an axis A on the hull 10 of the floating device , Such a drive device is often referred to as a rudder propeller or pod drive and usually has a drive power of 0.5 - 10 MW.
Die Strömungsmaschine 1 umfasst ein hydrodynamisch optimiert gestaltetes Unterwassergehäuse 2, das an dem Rumpf 10 des Schiffes angeordnet ist, einen Propeller 3, der außerhalb des Gehäuses 2 angeordnet ist, und eine Propellerwelle 4, auf der der Propeller 3 sitzt. Die Propellerwelle 4 ist dabei mittels Lager 12 innerhalb des Gehäuses 2 drehbar gelagert und über eine Durchtrittsöffnung 5 aus dem Gehäuse 2 herausgeführt.The turbomachine 1 comprises a hydrodynamically optimized designed underwater housing 2, which is arranged on the hull 10 of the ship, a propeller 3, which is arranged outside of the housing 2, and a propeller shaft 4, on which the propeller 3 is seated. The propeller shaft 4 is rotatably supported by bearings 12 within the housing 2 and led out of the housing 2 via a passage opening 5.
Ein Planetengetriebe 6 ist mit der Propellerwelle 4 gekoppelt und umfasst ein Getriebegehäuse 7, das mit einer Getriebeflüssigkeit 8 in Form von Öl oder einem anderen Schmiermittel gefüllt ist. Das Getriebegehäuse 7 bildet mit seiner Umfangs- fläche einen Teil der Umfangsflache des Gehäuses 2 der Strömungsmaschine. Sowohl die Durchtrittsöffnung 5 als auch die Wellendichtung 9 sind somit integraler Bestandteil des Getriebegehäuses 7.A planetary gear 6 is coupled to the propeller shaft 4 and includes a transmission housing 7 which is filled with a transmission fluid 8 in the form of oil or other lubricant. The gear housing 7 forms with its peripheral surface a part of the circumferential surface of the housing 2 of the turbomachine. Both the passage opening 5 and the shaft seal 9 are thus an integral part of the transmission housing. 7
An der Durchtrittsöffnung 5 für die sich drehende Propellerwelle 4 durch das Gehäuse 2 dichtet eine Wellendichtung 9 die Durchtrittsöffnung 5 gegenüber einem Eintritt von Flüssigkeit von außerhalb des Gehäuses 2 in einen Innenraum des Gehäuses 2 ab.At the passage opening 5 for the rotating propeller shaft 4 through the housing 2, a shaft seal 9 seals the passage opening 5 against entry of liquid from outside the housing 2 into an interior of the housing 2.
Durch den direkten thermischen Kontakt zwischen der Dichtung 9 und der Getriebeflüssigkeit 8 kann besonders leicht Wärme von der Dichtung 9 an die Getriebeflüssigkeit 8 übertragen werden, wodurch die thermische Belastung der Dichtung und somit die Gefahr von Beschädigungen verringert wird. Zwischen dem Meerwasser, das das Gehäuse 2 der Strömungsmaschine 1 umströmt, und der Getriebeflüssigkeit 8 besteht nur eine geringe Druckdifferenz, wodurch die mechanische Belastung der Dichtung 9 und somit ebenfalls die Gefahr von Be- Schädigungen der Dichtung 9 verringert werden.Due to the direct thermal contact between the seal 9 and the transmission fluid 8 heat can be transferred from the seal 9 to the transmission fluid 8 particularly easily, whereby the thermal load on the seal and thus the risk of damage is reduced. Between the seawater, which flows around the housing 2 of the turbomachine 1, and the transmission fluid 8, there is only a small pressure difference, whereby the mechanical load on the seal 9 and thus also the risk of damage to the seal 9 are reduced.
Innerhalb des Gehäuses 2 befindet sich eine elektrische Maschine in Form eines elektrischen Motors 11 zum Antrieb des Propellers 3, wobei der elektrische Motor 6 mittels des Ge- triebes 6 mit der Propellerwelle 4 bzw. mit dem Propeller 3 gekoppelt ist.Within the housing 2 there is an electric machine in the form of an electric motor 11 for driving the propeller 3, the electric motor 6 being coupled to the propeller shaft 4 or to the propeller 3 by means of the gear 6.
Der elektrische Motor 11 umfasst ein Motorgehäuse 13, wobei die Umfangsflache dieses Gehäuses 13 einen Teil der Umfangs- fläche das Gehäuse 2 der Strömungsmaschine 1 bildet.The electric motor 11 comprises a motor housing 13, wherein the peripheral surface of this housing 13 forms a part of the peripheral surface of the housing 2 of the turbomachine 1.
Das Getriebegehäuse 7 liegt dabei an dem Motorgehäuse 13 an, so dass der elektrische Motor 11 gut gegen eine durch die Durchtrittsöffnung 5 in das innere des Gehäuses 2 eintretende Flüssigkeit geschützt ist.The gear housing 7 rests on the motor housing 13, so that the electric motor 11 is well protected against a through the passage opening 5 into the interior of the housing 2 entering liquid.
Der elektrische Motor 11 ist als eine schnell laufende Maschine ausgebildet, wobei das Planetengetriebe 6 derart ausgebildet ist, dass beim Betrieb der Strömungsmaschine 1 die Drehzahl der elektrischen Maschine 11 größer ist als dieThe electric motor 11 is designed as a high-speed machine, wherein the planetary gear 6 is designed such that during operation of the turbomachine 1, the rotational speed of the electric machine 11 is greater than that
Drehzahl der Propellerwelle 4 (z.B. 4 bis 5faches der Propellerdrehzahl) .Speed of the propeller shaft 4 (e.g., 4 to 5 times the propeller speed).
Von besonderem Vorteil erfolgt eine Kühlung des elektrischen Motors 11 zumindest zum größten Teil durch eine Wärmeübertragung durch das Gehäuse 2 der Strömungsmaschine 1 hindurch an das Meerwasser außerhalb der Strömungsmaschine 1.Of particular advantage, a cooling of the electric motor 11 takes place at least for the most part by a heat transfer through the housing 2 of the turbomachine 1 to the seawater outside the turbomachine 1.
Bevorzugt sind der elektrische Motor 11 und das Getriebe 6 gekapselt und damit besonders gut gegen Einflüsse von außen geschützt . FIG 2 zeigt die Strömungsmaschine 1 von FIG 1, wobei sich jedoch kein elektrischer Motor im Inneren des Gehäuses 2 befindet. Statt dessen ist die Propellerwelle 3 über das Getriebe 6 mit einer Vertikalwelle 21 (L-Anordnung) gekoppelt, die mit einem nicht näher gezeigten elektrischen Motor gekoppelt ist, der im Inneren des Schiffsrumpfes 10 angeordnet ist. Dabei ist zur Kraftübertragung zwischen der Propellerwelle 4 und der Vertikalwelle 21 in dem Antriebsstrang zwischen dem Planetengetriebe 6 und der Vertikalwelle 21 ein Tellerrad- Kegelrad-Getriebe 22 angeordnet.Preferably, the electric motor 11 and the gear 6 are encapsulated and thus particularly well protected against external influences. FIG. 2 shows the turbomachine 1 of FIG. 1, but with no electric motor in the interior of the housing 2. Instead, the propeller shaft 3 is coupled via the gear 6 with a vertical shaft 21 (L-arrangement), which is coupled to an electric motor not shown in detail, which is arranged in the interior of the hull 10. In this case, a crown-bevel gear 22 is arranged for transmitting power between the propeller shaft 4 and the vertical shaft 21 in the drive train between the planetary gear 6 and the vertical shaft 21.
FIG 3 zeigt die Strömungsmaschine 1 von FIG 1 mit einer in das Gehäuse 2 integrierten und an dem Getriebegehäuse 7 anliegenden Wellendichtung 9 statt mit einer in das Getriebege- häuse 7 integrierten Wellendichtung. Auch bei einer derartigen Ausgestaltung kann besonders leicht Wärme von der Dichtung 9 an die Getriebeflüssigkeit 8 übertragen sowie eine nur verhältnismäßig geringe Druckdifferenz an der Dichtung ermöglicht werden, wodurch die im Zusammenhang mit FIG 1 erläuter- ten Vorteile erzielt werden. Das Getriebegehäuse 7 besteht hierbei bevorzugt aus einem besonders wärmeleitfähigen Material .FIG. 3 shows the turbomachine 1 of FIG. 1 with a shaft seal 9 integrated into the housing 2 and resting against the transmission housing 7 instead of a shaft seal integrated into the transmission housing 7. Even with such a configuration, it is particularly easy to transfer heat from the seal 9 to the transmission fluid 8 and to allow only a relatively small pressure difference at the seal, as a result of which the advantages explained in connection with FIG. 1 are achieved. The gear housing 7 here preferably consists of a particularly thermally conductive material.
Die Strömungsmaschinen 1 der FIG 1 - 3 können auf ihrer dem Propeller 3 abgewandten Seite jeweils eine weitere vorstehend geschilderte erfindungsgemäße Anordnung eines Propellers, einer Propellerwelle, einer Wellendichtung und eines Getriebes aufweisen, wobei die Propellerwelle bzw. der Propeller mit der gleichen elektrischen Maschine 11 oder mit einer zweiten elektrischen Maschine gekoppelt sein können. Die beiden Propeller können dabei in gleicher Richtung rotieren oder auch kontrarotieren, wobei die Drehgeschwindigkeiten gleich oder auch unterschiedlich sein können.The turbomachines 1 of FIGS. 1-3 may each have a further arrangement according to the invention described above of a propeller, a propeller shaft, a shaft seal and a gear on its side facing away from the propeller 3, wherein the propeller shaft or the propeller with the same electric machine 11 or can be coupled with a second electric machine. The two propellers can rotate in the same direction or even contrarotate, the rotational speeds may be the same or different.
Die Strömungsmaschinen 1 der FIG 1 - 3 sind modular aus einem Druckpropellermodul 23, einem Getriebemodul 24, einem Motormodul 25 und einem Endkappenmodul 26 aufgebaut. Die Module 23 - 26 sind dabei Bestandteile eines modularen Baukastensys- tems, das Getriebemodule, Motormodule und Propellermodule unterschiedlicher Leistungsklassen und -Charakteristiken, Untersetzungsverhältnissen, Drehgeschwindigkeiten, Drehrichtungen, etc. umfasst. The turbomachines 1 of FIGS. 1-3 are modularly constructed from a pressure propeller module 23, a transmission module 24, a motor module 25 and an end cap module 26. The modules 23-26 are components of a modular construction system. includes transmission modules, motor modules and propeller modules of different power classes and characteristics, reduction ratios, rotational speeds, directions of rotation, etc.

Claims

Patentansprüche claims
1. Strömungsmaschine (1) mit1. Turbomachine (1) with
- einem Gehäuse (2), - wenigstens einem Propeller (3) außerhalb des Gehäuses (2),a housing (2), at least one propeller (3) outside the housing (2),
- einer Propellerwelle (4), die mit dem Propeller (3) gekoppelt ist, wobei die Propellerwelle (4) innerhalb des Gehäuses (2) gelagert ist und über eine Durchtrittsöffnung (5) aus dem Gehäuse (2) heraus geführt ist, - einem Getriebe (6), das mit der Propellerwelle (4) gekoppelt ist, wobei das Getriebe (6) innerhalb des Gehäuses (2) angeordnet ist und ein Getriebegehäuse (7) umfasst,- A propeller shaft (4) which is coupled to the propeller (3), wherein the propeller shaft (4) is mounted within the housing (2) and via a passage opening (5) out of the housing (2) out, - a Transmission (6), which is coupled to the propeller shaft (4), wherein the transmission (6) is arranged within the housing (2) and comprises a transmission housing (7),
- eine Wellendichtung (9), die die Durchtrittsöffnung (5) gegen einen Eintritt von Flüssigkeit in das Gehäuse (2) ab- dichtet, dadurch gekennzeichnet, dass das Getriebegehäuse (7) zumindest teilweise mit einer Getriebeflüssigkeit (8) gefüllt ist und dass die Wellendichtung (9) an dem Getriebegehäuse (7) anliegt oder in das Getriebegehäuse (7) integriert ist.- A shaft seal (9) which seals the passage opening (5) against ingress of liquid into the housing (2), characterized in that the transmission housing (7) is at least partially filled with a transmission fluid (8) and that Shaft seal (9) on the transmission housing (7) rests or in the transmission housing (7) is integrated.
2. Strömungsmaschine (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Getriebe (6) als ein Planetengetriebe ausgebildet ist.2. Turbomachine (1) according to claim 1, characterized in that the transmission (6) is designed as a planetary gear.
3. Strömungsmaschine (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Getriebe (6) mit einer elektrischen Maschine (11) gekoppelt ist.3. Turbomachine (1) according to claim 1 or 2, characterized in that the transmission (6) with an electric machine (11) is coupled.
4. Strömungsmaschine (1) nach Anspruch 3, dadurch gekennzeichnet, dass die elektrische Maschine (11) innerhalb des Gehäuses (2) angeordnet ist.4. turbomachine (1) according to claim 3, characterized in that the electric machine (11) within the housing (2) is arranged.
5. Strömungsmaschine (1) nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Getriebe (6) derart ausge- bildet ist, dass beim Betrieb der Strömungsmaschine (1) die Drehzahl der elektrischen Maschine (11) größer ist als die Drehzahl der Propellerwelle (4) . 5. turbomachine (1) according to claim 3 or 4, characterized in that the transmission (6) is designed such that during operation of the turbomachine (1), the rotational speed of the electric machine (11) is greater than the rotational speed of the propeller shaft (4).
6. Strömungsmaschine (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zumindest ein Teil des Getriebegehäuses (7) einen Teil des Gehäuses (2) der Strömungsmaschine (1) bildet.6. Turbomachine (1) according to one of the preceding claims, characterized in that at least part of the transmission housing (7) forms part of the housing (2) of the turbomachine (1).
7. Strömungsmaschine (1) nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass die elektrische Maschine (11) ein Maschinengehäuse (13) umfasst, wobei zumindest ein Teil des Maschinengehäuses (13) einen Teil des Gehäuses (2) der Strömungsmaschine (1) bildet.7. Turbomachine (1) according to one of claims 3 to 6, characterized in that the electric machine (11) comprises a machine housing (13), wherein at least a part of the machine housing (13) forms a part of the housing (2) of the turbomachine ( 1) forms.
8. Strömungsmaschine (1) nach Anspruch 7, dadurch gekennzeichnet, dass das Maschinengehäuse (13) an dem Getriebegehäuse (7) anliegt.8. Turbomachine (1) according to claim 7, characterized in that the machine housing (13) rests against the gear housing (7).
9. Strömungsmaschine (1) nach Anspruch 3, dadurch gekennzeichnet, dass eine Kühlung der elektrischen Maschine (11) durch eine Wärmeübertragung durch das Gehäuse (2) der Strömungsmaschine (1) hindurch an die Umgebung außerhalb der Strömungsmaschine (1) erfolgt.9. turbomachine (1) according to claim 3, characterized in that a cooling of the electric machine (11) by a heat transfer through the housing (2) of the turbomachine (1) through to the environment outside of the turbomachine (1).
10. Strömungsmaschine (1) nach Anspruch 6 und 7, gekennzeichnet durch einen modularen Aufbau aus zumindest einem oder zwei Propellermodulen (23), einem oder zwei Getriebemodulen (24) und einem oder zwei Motormodulen (25) .10. Turbomachine (1) according to claim 6 and 7, characterized by a modular construction of at least one or two propeller modules (23), one or two gear modules (24) and one or two motor modules (25).
11. Verwendung der Strömungsmaschine (1) nach einem der Ansprüche 1 bis 10 als eine Antriebseinrichtung für eine schwimmende oder tauchende Einrichtung, wie z.B. ein Schiff oder eine Offshore-Plattform, wobei die Strömungsmaschine, vorzugsweise horizontal und/oder vertikal drehbar, an einem Rumpf (10) der schwimmenden oder tauchenden Einrichtung befestigt ist.Use of the turbomachine (1) according to any one of claims 1 to 10 as a drive means for a floating or submersible device, e.g. a ship or an offshore platform, wherein the turbomachine, preferably horizontally and / or vertically rotatable, is attached to a hull (10) of the floating or submersible device.
12. Verwendung der Strömungsmaschine (1) nach einem der Ansprüche 1 bis 10 als eine Pumpe, ein Ventilator oder ein Verdichter . 12. Use of the turbomachine (1) according to one of claims 1 to 10 as a pump, a fan or a compressor.
13. Verwendung der Strömungsmaschine (1) nach einem der Ansprüche 1 bis 10 als eine Turbine, insbesondere zur Stromerzeugung bei einer schwimmenden oder tauchenden Einrichtung, in einem Strömungs- oder Gezeitenkraftwerk oder in einer Windkraftanlage. 13. Use of the turbomachine (1) according to any one of claims 1 to 10 as a turbine, in particular for power generation in a floating or diving device, in a flow or tidal power plant or in a wind turbine.
EP10706611.0A 2009-03-02 2010-02-26 Non-positive displacement engine with a housing having improved watertightness Not-in-force EP2403750B1 (en)

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