EP2238019B1 - Antrieb für ein wasserfahrzeug mit einem elektromotor - Google Patents

Antrieb für ein wasserfahrzeug mit einem elektromotor Download PDF

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Publication number
EP2238019B1
EP2238019B1 EP09707102A EP09707102A EP2238019B1 EP 2238019 B1 EP2238019 B1 EP 2238019B1 EP 09707102 A EP09707102 A EP 09707102A EP 09707102 A EP09707102 A EP 09707102A EP 2238019 B1 EP2238019 B1 EP 2238019B1
Authority
EP
European Patent Office
Prior art keywords
rotor
drive unit
stator
propeller
air gap
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.)
Not-in-force
Application number
EP09707102A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2238019A2 (de
Inventor
Benjamin Holstein
Norman Perner
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Priority to PL09707102T priority Critical patent/PL2238019T3/pl
Publication of EP2238019A2 publication Critical patent/EP2238019A2/de
Application granted granted Critical
Publication of EP2238019B1 publication Critical patent/EP2238019B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor

Definitions

  • the invention relates to a drive for a watercraft, in particular a pod drive or a drive for an underwater vehicle.
  • pod ship propulsion systems for which an electric propulsion engine is housed in a nacelle hinged to a ship's hull.
  • the energy for operating the outside-mounted engine is usually generated by means of a diesel generator, which is housed in a suitable location in the ship's hull.
  • Pod marine propulsion systems have a number of advantages over conventional propulsion systems. This is on the one hand, the connection of an effective propulsion system with a control unit, resulting from the rotation of pod ship propulsion relative to the ship's longitudinal axis. This circumstance is particularly important for ferries and icebreakers.
  • pod ship propulsion engines are characterized by a reduced noise within the hull and lower vibration tendency. Furthermore, additional space is created in the hull by displacing at least parts of the drive to the outside. Due to the above advantages, pod ship propulsion systems, especially for cruise liners, in which, in addition to the high Eigenmanövrierpronounced high comfort for the passengers, enforced.
  • the US 2714866 discloses a design of a pod ship propulsion with a Frischwasserumströmten electric motor with coaxial arrangement of rotor and stator.
  • the radially inner rotor is rotationally rigidly connected to a hollow shaft, which cooperates via a coupling with a coaxially disposed within the hollow shaft drive shaft of the propeller. Due to the intermediate coupling, the construction is expensive, in addition, the drive shaft of the propeller is supported by radial bearings with a relatively small diameter.
  • a pod ship propulsion is from the DE 102004048754 A1 known. Described is a pod ship propulsion with high efficiency, wherein a slow-running, large-scale propeller is driven by a high-speed electric motor via an intermediate hydrodynamic power split transmission. This measure creates an energy-efficient drive system, which, however, is structurally complex.
  • the invention has for its object to provide a drive for a watercraft, which overcomes the disadvantages set out above. What is needed is a transmission-free direct drive, which leads to a structurally simplified and yet stable generic ship propulsion and whose large-sized electric motor provides an efficient drive for a slowly revolving propeller.
  • the drive according to the invention for a watercraft comprises a revolving unit, which additionally carries the rotor of an electric motor in addition to the propeller, so that there is a rotationally fixed connection between the rotor and the propeller.
  • the electric motor has a coaxial arrangement of rotor and stator and a radially directed magnetic field in the air gap between Rotor and stator on.
  • the stator is housed either in an air gap pointing portion of the hull of the vessel or in a hinged to the hull of the vessel gondola housing a pod drive. Preference is given to a radially large-sized generator having a plurality of poles.
  • the air gap between the rotor and the stator is flooded, in which area either ambient water, preferably filtered, or fresh water is supplied.
  • the stator cladding is preferably encapsulated waterproof. This is achieved either by a can of austenitic steel or another non-electrically conductive material. For this purpose, inter alia, a glass or carbon fiber reinforced material or an elastomer in question. Alternatively, the seal can be done by a potting compound.
  • a pressure compensation vessel is preferably provided for this area.
  • the rotor is encapsulated, as far as this is not carried out purely passive with permanent magnets. This therefore relates to embodiments with external excitation, in which case the energy required for the external excitation preferably is transmitted without contact, in particular inductively, across the air gap.
  • At least one water lubricated sliding bearing is arranged for supporting the rotating unit in the axial direction on both sides of the air gap, which is designed and oriented such that at least one support takes place in the radial direction for the revolving unit.
  • the water-lubricated sliding bearings lead to a variety of advantages, on the one hand they are characterized by a high load capacity and a high resistance to contamination and the ingress of sediments. In addition, they tolerate to some extent structural deformations, especially when using a hard-soft mating, and thus can absorb vibrations and shocks.
  • water-lubricated slide bearings used in the invention are inexpensive and can be constructed of individual segments, which in turn are separately exchangeable.
  • the water-lubricated plain bearings used according to the invention for the axial support of the rotating unit allow safe guidance even for high-performance drives.
  • a segmented design of the sliding bearing is preferred, so that when worn individual components can be replaced. It also simplifies the assembly and adjustment of the plain bearing.
  • the region of the circulating unit which serves to support the propeller, is axially spaced from that region in which the rotor is arranged and on which the water-lubricated plain bearings are provided for radial support.
  • the thrust bearing is designed to intercept the propeller thrust as close as possible to the point of introduction of the propeller forces. The further design is advantageous because the propeller forces and the associated deformations are kept as far as possible from the rotor and its storage, thereby remain largely constant during operation, the air gap tolerances, so that unwanted fluctuations in the drive power can be avoided.
  • a hub disc which carries the propeller and which is rotationally rigidly connected to the part of the revolving unit which carries the rotor.
  • This part can be cylindrical or hollow cylindrical.
  • the rotor is designed as an internal rotor.
  • the rotating unit comprises a rotor supporting or receiving part, which is inserted into a recess in that part of the ship's hull or the nacelle, which serves to receive the stator (fixed part) is inserted. Subsequently, this is referred to as a support body. Accordingly, the support body runs through the water-lubricated plain bearings on both sides of the air gap on the inner wall of the recess in the fixed part.
  • a particular advantage of this embodiment is the fact that the support body for receiving and / or for supporting the rotor may have a separate buoyancy volume, for example, by a voluminous, watertight executed embodiment or by separate buoyancy bodies. Due to the buoyancy volume, the water-lubricated plain bearings on both sides of the air gap can be relieved and / or the rotating unit is balanced so that a defined preload of the bearings is made. As a result, especially when starting the area of mixed friction in the camps go through quickly.
  • FIG. 1 shows schematically simplified a preferred embodiment of the invention in longitudinal section along the axis of rotation 17. Shown is a revolving unit 1, comprising a propeller 2, which is supported by a hub disc 15. An additional part of the rotating unit 1 is the hood 14, which is designed aerodynamically.
  • the rotor 4 of the electric motor 3 is part of the rotating unit and is arranged coaxially with the stator 5, which is housed in a fixed part 16.
  • the fixed part may be either a gondola housing of a pod ship drive rotatably hinged to a ship's hull, or a part of the ship hull itself, such as the stern area of an underwater vehicle.
  • a first water-lubricated sliding bearing 12.1 and a second water-lubricated sliding bearing 12.2 is provided for the expiry of the rotating unit 1 on the fixed part 16.
  • these water-lubricated plain bearings 12.1, 12.2 are designed as radial bearings. Further embodiments, such as a combination of radial and axial bearings, are conceivable.
  • a separate thrust bearing 13 is provided to intercept the thrust forces of the propeller 2, which is mounted as possible propellemah.
  • the support is made on a flange 19 connected to the fixed part 16, wherein the separate thrust bearing 13 double-acting is formed and traction / thrust loads of the propeller 2 traps in the axial direction.
  • the water-lubricated plain bearings 12.1, 12.2 used according to the invention and the correspondingly designed separate axial bearings 13 are preferably segmented and designed as a hard-soft pairing. This results in bearings with high load capacity, which are insensitive to penetrating sediments.
  • the bearings are inexpensive and can safely intercept the forces and moments even for drives with high performance in the range of a few megawatts.
  • the bearings spring safely from a certain inherent elasticity shocks. That is, they are deformable to some extent. However, only so far as the necessary tolerances of the air gap 11 for the electric motor 3 can be safely met.
  • the electric motor 3 has a watertight encapsulation, in particular of the plated areas.
  • a Tokapseiter stator 8 is provided to protect the stator.
  • a rotor 4 is selected with external excitation, so that on the rotor side an encapsulated rotor region 7 is present.
  • a unit for contactless energy transfer 6 is provided for supplying the energy required for the external excitation from the existing part 16 to the circulating unit 1. This can be designed as an annular coil arrangement for inductive energy transmission or as an exciter machine. The details of the embodiment are not shown in the figures.
  • encapsulated rotor region 7 and the encapsulated stator region 8 different embodiments are conceivable, for example the use of a split tube or the use of casting compounds for watertight encapsulation.
  • a pressure compensation vessel 9 is provided for pressure equalization of the encapsulated rotor portion 7.
  • the rotor 4 is designed as an internal rotor. Accordingly, the rotor-carrying part 10 of the rotating unit 1 is formed as a support body 18 which receives or supports the rotor 4. This support member 18 is inserted into a recess in the fixed part 16 and is supported by means of the water-lubricated plain bearings 12.1, 12.2 in the radial direction against the inner wall of this recess in the fixed part 16 from.
  • the relative position of the lifting point and the center of gravity of the rotating unit 2 and the size of the resulting torque can be adjusted so that the lubricated sliding bearings 12.1, 12.2 are defined to be biased and so bearing vibrations be damped. Furthermore, the mixed friction phase is traversed faster at low speeds.
  • an inventive drive more than comprise a propeller, it is conceivable in particular for a pod ship propulsion that a pulling and pushing propeller are mounted on both sides of a nacelle, and it is conceivable that each propeller is driven by a separate electric motor or drive multiple propellers with an electric motor.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Sliding-Contact Bearings (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Valve Device For Special Equipments (AREA)
EP09707102A 2008-01-30 2009-01-28 Antrieb für ein wasserfahrzeug mit einem elektromotor Not-in-force EP2238019B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09707102T PL2238019T3 (pl) 2008-01-30 2009-01-28 Napęd pojazdu wodnego z silnikiem elektrycznym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008006809A DE102008006809A1 (de) 2008-01-30 2008-01-30 Antrieb für ein Wasserfahrzeug
PCT/EP2009/000527 WO2009095212A2 (de) 2008-01-30 2009-01-28 Antrieb für ein wasserfahrzeug

Publications (2)

Publication Number Publication Date
EP2238019A2 EP2238019A2 (de) 2010-10-13
EP2238019B1 true EP2238019B1 (de) 2012-04-25

Family

ID=40785271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09707102A Not-in-force EP2238019B1 (de) 2008-01-30 2009-01-28 Antrieb für ein wasserfahrzeug mit einem elektromotor

Country Status (5)

Country Link
EP (1) EP2238019B1 (pl)
AT (1) ATE555007T1 (pl)
DE (1) DE102008006809A1 (pl)
PL (1) PL2238019T3 (pl)
WO (1) WO2009095212A2 (pl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010037834B4 (de) 2010-09-28 2021-07-22 Aleksandar Miletic Wasserfortbewegungsmittel zum Schleppen eines Schwimmers oder Tauchers.
JP5804312B2 (ja) * 2011-05-30 2015-11-04 国立研究開発法人海上技術安全研究所 船舶用電気推進装置及び船舶
DE102021111401A1 (de) * 2021-05-03 2022-11-03 Rosen Swiss Ag Antriebsvorrichtung zum Antrieb eines Wasserfahrzeuges

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE877254C (de) * 1949-11-29 1955-01-31 Pleuger K G Elektromotorische Antriebsvorrichtung fuer Propeller od. dgl. von Schiffen
US2714866A (en) 1951-02-19 1955-08-09 Friedrich W Pleuger Device for propelling a ship
FR1162934A (fr) * 1954-04-14 1958-09-18 Goodrich Co B F Palier
DE3141339C2 (de) 1981-10-17 1984-10-31 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Elektrischer Antrieb für Wasserfahrzeuge, insbesondere für Unterwasserfahrzeuge
US5509830A (en) 1994-08-23 1996-04-23 Newport News Shipbuilding And Dry Dock Company Marine propulsor cooling and lubricating system
US5607329A (en) * 1995-12-21 1997-03-04 The United States Of America As Represented By The Secretary Of The Navy Integrated motor/marine propulsor with permanent magnet blades
FR2788032B1 (fr) 1998-12-30 2002-03-22 Jeumont Ind Dispositif de propulsion d'un batiment naval
DE10158757A1 (de) * 2001-11-29 2003-06-18 Siemens Ag Schiffsantrieb
DE102004048754A1 (de) 2004-10-05 2006-04-13 Voith Turbo Gmbh & Co. Kg Pod-Schiffsantrieb mit Getriebe
US7371134B2 (en) * 2005-02-18 2008-05-13 American Superconductor Corporation Motor mount for azimuthing pod
DE102006026230B4 (de) * 2006-06-06 2011-11-24 Alexander Rubinraut Antrieb für Schiffe

Also Published As

Publication number Publication date
DE102008006809A1 (de) 2009-08-06
PL2238019T3 (pl) 2012-07-31
WO2009095212A2 (de) 2009-08-06
ATE555007T1 (de) 2012-05-15
WO2009095212A3 (de) 2010-05-14
EP2238019A2 (de) 2010-10-13

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