EP3666639A1 - Système de propulsion pour vaisseau marin - Google Patents

Système de propulsion pour vaisseau marin Download PDF

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Publication number
EP3666639A1
EP3666639A1 EP18211692.1A EP18211692A EP3666639A1 EP 3666639 A1 EP3666639 A1 EP 3666639A1 EP 18211692 A EP18211692 A EP 18211692A EP 3666639 A1 EP3666639 A1 EP 3666639A1
Authority
EP
European Patent Office
Prior art keywords
propulsion system
coupling
motor
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
EP18211692.1A
Other languages
German (de)
English (en)
Other versions
EP3666639B1 (fr
Inventor
Mattias Hansson
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.)
Berg Propulsion Production AB
Original Assignee
Caterpillar Propulsion Production AB
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 Caterpillar Propulsion Production AB filed Critical Caterpillar Propulsion Production AB
Priority to EP18211692.1A priority Critical patent/EP3666639B1/fr
Priority to CN201980079200.1A priority patent/CN113165726B/zh
Priority to PCT/EP2019/025451 priority patent/WO2020119945A1/fr
Publication of EP3666639A1 publication Critical patent/EP3666639A1/fr
Application granted granted Critical
Publication of EP3666639B1 publication Critical patent/EP3666639B1/fr
Active 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
    • 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
    • B63H23/22—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing
    • B63H23/24—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
    • B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
    • B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
    • B63H2003/088—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid characterised by supply of fluid actuating medium to control element, e.g. of hydraulic fluid to actuator co-rotating with the propeller
    • 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
    • B63H2005/075—Arrangements on vessels of propulsion elements directly acting on water of propellers using non-azimuthing podded propulsor units, i.e. podded units without means for rotation about a vertical axis, e.g. rigidly connected to the hull
    • 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
    • B63H2023/325—Thrust bearings, i.e. axial bearings for propeller shafts

Definitions

  • the present disclosure relates to marine vessels, in particular, to a propulsion system for a marine vessel.
  • a marine vessel such as, for example, an offshore support vessel generally includes one or more combustion engines driving one or more main propellers for propulsion of the vessel.
  • the one or more main propellers are mechanically coupled to the one or more engines, for example, via one or more drive shafts.
  • the one or more engines rotate at a given speed, resulting in a corresponding rotation of the one or more main propellers.
  • the vessel may include a pair of diesel engines drivably coupled to a pair of main propellers.
  • the diesel engines and the main propellers are generally operating at constant speed.
  • a gear box For transmitting a power output of the engines to the main propellers, a gear box may be arranged between a propulsion shaft coupled to the engine and a propeller shaft coupled to an associated propeller.
  • the gear box is configured as a speed change mechanism that changes the speed of the propulsion shaft to a speed of the propeller shaft that is suitable for rotating the propeller.
  • US 9,919,780 B2 discloses a propulsion system for vessels including a permanent magnet motor having an outer housing structure.
  • a motor shaft is connected to a propeller shaft including a propeller.
  • a thrust bearing and a propeller pitch control system are integrated into the permanent magnet motor.
  • the present disclosure is directed, at least in part, to improving or overcoming one or more aspects of prior systems.
  • a propulsion system for a marine vessel comprises a controllable pitch propeller, a propeller shaft connected to the controllable pitch propeller, and an electric motor including a motor shaft drivably connected to the propeller shaft via at least a first coupling.
  • a thrust bearing is provided separately from the electric motor and includes a support portion and a hollow shaft portion rotatably supported by the support portion. The hollow shaft portion is coupled to the motor shaft via a second coupling.
  • a fluid distribution unit is fluidly connected to the hollow shaft portion and configured to provide a flow of hydraulic fluid to the controllable pitch propeller via the hollow shaft portion, the motor shaft and the propeller shaft.
  • a marine vessel comprises a main engine or main motor and the propulsion system in accordance with the above aspect.
  • the main engine or main motor is configured to supply electric power to the electric motor of the propulsion system to drive the same.
  • a propulsion system for a marine vessel comprises a propeller, a propeller shaft connected to the propeller, and an electric motor including a motor shaft drivably connected to the propeller shaft via at least a first coupling.
  • a thrust bearing is provided separately from the electric motor and includes a support portion and a shaft portion rotatably supported by the support portion. The shaft portion is coupled to the motor shaft via a second coupling.
  • the propeller may be a fixed pitch propeller.
  • the thrust bearing may be disposed forward or aft of the electric motor.
  • the propulsion system may not include a gear unit.
  • the electric motor may be directly coupled to the propeller shaft via the first coupling in case the thrust bearing is disposed forward of the electric motor, or the electric motor may be directly coupled to the propeller shaft via the second coupling, the thrust bearing and the first coupling in case the thrust bearing is disposed aft of the electric motor.
  • the present disclosure may be based in part of the realization that, in order to fulfil demands for, e.g., silent operation of a propulsion system of a marine vessel and reducing mechanical and energy convertion losses, it may be desirable to provide an electric motor for driving a main propeller of the vessel. In particular, it has been realized that this can be achieved without providing a reduction gearbox system between the electric motor and a propeller shaft of the propeller.
  • the propulsion system in particular, the electric motor, the hydraulic unit and the thrust bearing.
  • This allows using the system in vessels of any size, for example, small to medium up to large scale vessels, and in applications ranging from light to heavy and extreme duty operation.
  • the propulsion system is easier to service and maintain, and replacement of individual parts is much easier.
  • the propulsion system disclosed herein can be retrofitted to marine vessels, for example, by providing the propulsion system in a fin attached to a hull of the vessel.
  • a plurality of propulsion systems and respective fins can be provided to achieve a desired output power.
  • the propulsion system is especially advantageous when a controllable pitch propeller is used, as it is possible to provide hydraulic lines for supplying hydraulic fluid to the controllable pitch propeller inside the respective shafts of the propulsion system, which are appropriately coupled to each other to achieve a fluid connection between, for example, control chambers in a hub of the propeller and the fluid distribution unit, which may be disposed forward of the electric motor and the propeller shaft.
  • Fig. 1 shows a partial side sectional view of a marine vessel 100 having a propulsion system 10
  • Fig. 2 shows an enlarged partial view of the propulsion system illustrating a thrust bearing in accordance with the present disclosure.
  • marine vessel 100 which may be an arctic vessel, for example, an arctic supply vessel, or a multi-purpose offshore vessel, comprises a hull 14. Further, marine vessel 100 includes one or more main engines or motors 20.
  • Each main engine 20 may be an internal combustion engine configured to burn a supply of gaseous and/or liquid fuel to produce a mechanical output.
  • each main engine 20 may be a diesel engine, a gaseous fuel engine or a dual fuel engine configured to burn both gaseous fuel and liquid fuel, for example, diesel oil.
  • each main engine 20 may be configured as an electric motor powered by a generator.
  • Each main engine 20 may be a variable speed engine that is configured to operate at varying speeds, or may be a constant speed engine configured to operate at a constant speed.
  • An alternator may be mechanically connected to main engine 20.
  • an input of the alternator may be mechanically connected to a flywheel (not shown) of engine 20.
  • the alternator may be configured to receive a mechanical output from the associated engine 20 and convert the same to electrical power.
  • the electrical power generated by the alternator may be provided to an electric motor 26 of a propulsion system 10 as described below, and, optionally, an electric motor (not shown) associated with a front tunnel thruster provided at a bow of vessel 100, which may generate a water jet resulting in a steering force which facilitates maneuvering of vessel 100.
  • the electrical power generated by the alternator may be provided to an electric motor (not shown) associated with a rear tunnel thruster.
  • electrical power output by the alternator may be supplied to one or more other electrical loads (not shown) of vessel 100.
  • the electrical loads may be heating systems, pumps, navigation and bridge systems or other auxiliary systems on vessel 100.
  • a fin 12 is formed in a rear portion of hull 14 and projects downward from hull 14.
  • fin 12 may be formed integrally with hull 14.
  • fin 12 may be a separate member fastened to hull 14 by appropriate fastening means, for example, by being bolted or welded to hull 14. It will be appreciated that a plurality of fins 12 may be provided, for example, two, three or four fins 12, if desired. In this case, each fin 12 accommodates a corresponding propulsion system 10.
  • propulsion system 10 may be provided in hull 14, or in another hull appendage, for example, a gondola or the like. Also in this case, a plurality of propulsion systems 10 may be provided, if desired.
  • each fin 12 may have any appropriate shape that provides an inner space formed inside each fin 12 that can accommodate propulsion system 10 while providing extra buoyancy for vessel 100. Therefore, the present disclosure is not limited to the shape of fin 12 shown in Fig. 1 .
  • propulsion system 10 of marine vessel 100 further includes a propeller 24, for example, a controllable pitch propeller, a propeller shaft 22 connected to controllable pitch propeller 24, an electric motor 26 including a motor shaft 28 drivably connected to propeller shaft 22 via a first coupling 32, and a thrust bearing 30 provided separately from electric motor 26 and including a support portion 38 mounted to an appropriate mounting structure arranged inside fin 12 and a hollow shaft portion 36 rotatably supported by support portion 38. Hollow shaft portion 36 is coupled to motor shaft 28 via a second coupling 34.
  • a propeller 24 for example, a controllable pitch propeller
  • a propeller shaft 22 connected to controllable pitch propeller 24
  • an electric motor 26 including a motor shaft 28 drivably connected to propeller shaft 22 via a first coupling 32
  • a thrust bearing 30 provided separately from electric motor 26 and including a support portion 38 mounted to an appropriate mounting structure arranged inside fin 12 and a hollow shaft portion 36 rotatably supported by support portion 38.
  • Hollow shaft portion 36 is
  • a fluid distribution unit 40 is fluidly coupled to hollow shaft portion 36 of thrust bearing 30 and configured to provide a flow of hydraulic fluid, for example, hydraulic oil, to control the pitch of the blades of propeller 24 via hollow shaft portion 36, motor shaft 28 and propeller shaft 22.
  • hydraulic fluid for example, hydraulic oil
  • propeller shaft 22, motor shaft 28 and hollow shaft portion 36 are arranged in sequence along an axial direction L in an in-line configuration.
  • propeller shaft 22 and hollow shaft portion 36 are coupled to motor shaft 28 on opposite ends of motor shaft 28.
  • electric motor 26 is arranged between thrust bearing 30 and propeller shaft 28 and coupled to the same via the respective couplings 32, 34.
  • fluid distribution unit 40 is detachably mounted to thrust bearing 30 on the side that is opposite to the side where the connection to the motor shaft 28 via coupling 34 is made.
  • fluid distribution unit 40 includes a housing portion 54 detachably attached to support portion 36 of thrust bearing 30, and a rotatable portion 56 connected to hollow shaft portion 36 of thrust bearing 30 to rotate together with the same.
  • Fluid distribution unit 40 is configured to supply hydraulic fluid to inner spaces (control chambers) provided in a propeller hub 46 (see Fig. 1 ) of propeller 24 to actuate corresponding actuators for changing the pitch angle of the blades of propeller 24 in a known manner.
  • thrust bearing 30 includes hollow shaft portion 36 as a rotatable member coupled to motor shaft 28, which is also configured as a hollow shaft including a plurality of inner bores or conduits (not shown) for transporting the hydraulic fluid.
  • propeller shaft 22 also includes a corresponding plurality of hydraulic conduits (inner bores) for supplying the hydraulic fluid received via motor shaft 28 to the inner spaces formed in propeller hub 46.
  • the hydraulic fluid is received by fluid distribution unit 40 from one or more hydraulic pumps via corresponding conduits (not shown) and distributed to propeller hub 46. It will be appreciated that appropriate seals may be provided to obtain a fluid-tight connection between the respective conduits. Details of a corresponding fluid supply in order to adjust the pitch angle of the blades of propeller 24 are known to the skilled person and will therefore not be described in detail.
  • a rudder 48 which forms part of a steering system of vessel 100, is provided aft of propeller 24 and used to steer vessel 100 in a known manner.
  • Propulsion system 10 further includes a protective guard 50 mounted forward of propeller 24, and an aft seal 44 provided forward of protective guard 50.
  • the rear part of propeller shaft 22 is radially supported by a stern tube assembly 42, and a forward seal 52 is arranged at the front end of stern tube assembly 42.
  • Propulsion system 10 further comprises a shaft earthing device 18 and a break system 16 configured to break propeller shaft 22, if necessary. These components and their functions are known, such that a detailed description thereof will be omitted herein.
  • electric motor 26 includes a motor housing 58 supported on a corresponding mounting structure inside fin 12.
  • thrust bearing 30 is also mounted on a corresponding mounting structure inside fin 12 and radially supports the shaft system including propeller shaft 22, motor shaft 28 and hollow shaft portion 36 while, at the same time, receiving axial loads acting on said shaft system. Due to thrust bearing 30 being arranged separately from electric motor 26, any appropriate thrust bearing 30 can be used, depending on the application, with any given size or configuration, as long as hollow shaft portion 36 is provided in order to supply hydraulic fluid to propeller 24.
  • a conventional thrust bearing may be used and modified accordingly, for example, by providing an inner bore inside the same to form hollow shaft portion 36 or installing hollow shaft portion 36 in order to provide the respective hydraulic lines or conduits.
  • a configuration of thrust bearings is known, and it will readily apparent to the skilled person how to modify a given thrust bearing, if necessary, in order to provide hollow shaft portion 36.
  • a fluid distribution unit to support portion 38 of thrust bearing 30 such that the rotatable portion 56 of the same can rotate with hollow shaft portion 36.
  • first coupling 32 and second coupling 34 may include a flange to flange connection of the respective shafts and/or coupling members provided for said shafts.
  • a shaft to shaft coupling could be provided between motor shaft 28 and hollow shaft portion 34.
  • any appropriate coupling can be used for each of first coupling 32 and second coupling 34.
  • at least one of first coupling 32 and second coupling 34 may include a sleeve coupling connecting open shaft ends of the respective shafts.
  • such a sleeve coupling may be used as coupling 32 between propeller shaft 22 and motor shaft 28.
  • Corresponding couplings are well-known and will therefore not be described in detail herein.
  • first coupling 32 and second coupling 34 may include a flexible element or damping element provided between the respective shafts in order to reduce vibrations and the like.
  • one or more disconnection devices for disconnecting at least one of first coupling 32 and second coupling 34 may be provided. This facilitates disconnection of, for example, hollow shaft portion 36 from motor shaft 28, or disconnection of motor shaft 28 from propeller shaft 22. In this manner, the individual components of propulsion system 10 are easier to service or repair, where necessary.
  • Electric motor 26 is a variable speed electric motor.
  • electric motor 26 may be a constant speed electric motor.
  • electric motor 26 may be a permanent magnet motor including a rotor integrated with motor shaft 28 and a stator arranged, for example, radially outwards of the rotor.
  • a rated power of electric motor 26 may be between 100 and 40,000 kW, preferably between 2,000 and 6,000 kW.
  • any type of electric motor can be used as electric motor 26, for example, a DC motor, an AC motor, a synchronous or asynchronous motor, etc.
  • a plurality of electric motors may be drivably coupled to propeller shaft 22, for example, in series, with an appropriate arrangement of thrust bearing 30 and fluid distribution unit 40 in the above-described manner.
  • fluid distribution unit 40 may include a rotation sensor 60 configured to detect a rotation angle of hollow shaft portion 36 and, accordingly, propeller shaft 22. In this manner, fluid distribution unit 40 can be controlled in an appropriate manner to supply the hydraulic fluid to the respective chambers inside propeller hub 46.
  • one or more lubrication supply channels may be formed inside the respective shafts in order to supply a lubricant, for example, mineral oil or the like, to propeller hub 46.
  • thrust bearing 30 is arranged forward of electric motor 26 and connected to fluid distribution unit 40 on the opposite side
  • thrust bearing 30 may be provided aft of electric motor 26.
  • thrust bearing 30 may be provided such that hollow shaft portion 36 of the same is connected between propeller shaft 22 and motor shaft 28 via first and second couplings 32, 34, respectively.
  • housing portion 54 of fluid distribution unit 40 may be detachably attached to motor housing 58 of electric motor 26, and rotatable portion 56 of the same may be connected to motor shaft 28 of electric motor 26.
  • the hydraulic fluid is then supplied to propeller 24 via motor shaft 28, hollow shaft portion 36 and propeller shaft 22 in this order.
  • the remaining configuration is essentially the same as described above. It should be noted, however, that in this configuration vibrations of, for example, electric motor 26 may be transmitted to fluid distribution unit 40. If this is not desired, the previously described configuration should be used instead.
  • marine vessel 100 has been described above as an arctic vessel, it will be readily appreciated that the engine room arrangement disclosed herein may be used in any other type of marine vessel, for example, (multi-purpose) offshore vessels, research vessels, cruise and ferry vessels, military vessels, cargo vessels, fishing vessels etc.
  • propeller 24 has been described above as a variable pitch propeller, in other examples, propeller 24 may be a fixed pitch propeller. It will be appreciated that fluid distribution unit 40 will be omitted in this case, and the respective shafts will not be hollow shafts. The remaining configuration may be the same as in the embodiments described above.
  • the propulsion system for a marine vessel disclosed herein is applicable to marine vessels in general for improving the serviceability and maintenance of a propulsion system of the same, in particular, in case the propulsion system includes an electric motor directly coupled to a propeller shaft without a gear unit.
  • Main engine 20 may combust a fuel such as liquid fuel and/or gaseous fuel to provide output power.
  • the output power provided by main engine 20 is converted into electrical power and supplied to electric motor 26 to rotate the same.
  • the rotation of motor shaft 28 is transmitted to propeller shaft 22 via coupling 32, and the rotation of propeller shaft 22 rotates propeller 24.
  • the thrust provided by propeller 24 can be controlled by varying the rotation speed of electric motor 26.
  • the thrust provided by propeller 24 can also be controlled by changing a pitch angle of the blades of controllable pitch propeller 24 in an appropriate manner.
  • fluid distribution unit 40 may supply hydraulic fluid to respective control chambers provided in propeller 46 via hollow shaft portion 36, motor shaft 28 and propeller shaft 22, more particularly, via corresponding hydraulic conduits or passages provided therein. In this manner, a desired thrust can also be set by an appropriate control of the pitch angle of the blades of propeller 24.
  • Axial loads received by shafts 22, 28 and 36 are received by thrust bearing 30. Accordingly, fluid distribution unit 40 is decoupled from, for example, vibrations produced by propeller 24 and electric motor 26.
  • the corresponding components can be separated from the remaining components by disconnecting, for example, couplings 32 and/or 34. This facilitates easy servicing and repair of, for example, fluid distribution unit 40, hydraulic lines provided within the respective shafts, etc.
EP18211692.1A 2018-12-11 2018-12-11 Système de propulsion pour vaisseau marin Active EP3666639B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18211692.1A EP3666639B1 (fr) 2018-12-11 2018-12-11 Système de propulsion pour vaisseau marin
CN201980079200.1A CN113165726B (zh) 2018-12-11 2019-12-10 用于海洋船舶的推进系统
PCT/EP2019/025451 WO2020119945A1 (fr) 2018-12-11 2019-12-10 Système de propulsion pour un navire marin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18211692.1A EP3666639B1 (fr) 2018-12-11 2018-12-11 Système de propulsion pour vaisseau marin

Publications (2)

Publication Number Publication Date
EP3666639A1 true EP3666639A1 (fr) 2020-06-17
EP3666639B1 EP3666639B1 (fr) 2022-04-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18211692.1A Active EP3666639B1 (fr) 2018-12-11 2018-12-11 Système de propulsion pour vaisseau marin

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EP (1) EP3666639B1 (fr)
CN (1) CN113165726B (fr)
WO (1) WO2020119945A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114633865A (zh) * 2022-03-02 2022-06-17 中国船舶重工集团公司第七一九研究所 磁力支承的柔性推进轴系和船舶

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754923A (en) * 1952-06-30 1956-07-17 John H Strandell Single crank controllable pitch propeller
US20050106953A1 (en) * 2000-12-11 2005-05-19 Peter Andersen Hybrid ship propulsion system
US9919780B2 (en) 2012-10-18 2018-03-20 Scana Volda As Propulsion system for vessels

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1483753A (en) * 1974-02-15 1977-08-24 Stone Manganese Marine Ltd Controllable-pitch propeller systems
US4934901A (en) * 1989-04-21 1990-06-19 Duchesneau Jerome G Pitch change actuation system
CN105517891B (zh) * 2013-06-10 2018-07-31 卡特彼勒推进产品公司 螺旋桨装置
NO2990327T3 (fr) * 2014-08-29 2018-09-22
EP3067266A1 (fr) * 2015-03-13 2016-09-14 Caterpillar Propulsion Production AB Agencement salle des machines pour un navire maritime

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754923A (en) * 1952-06-30 1956-07-17 John H Strandell Single crank controllable pitch propeller
US20050106953A1 (en) * 2000-12-11 2005-05-19 Peter Andersen Hybrid ship propulsion system
US9919780B2 (en) 2012-10-18 2018-03-20 Scana Volda As Propulsion system for vessels

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114633865A (zh) * 2022-03-02 2022-06-17 中国船舶重工集团公司第七一九研究所 磁力支承的柔性推进轴系和船舶
CN114633865B (zh) * 2022-03-02 2023-10-27 中国船舶重工集团公司第七一九研究所 磁力支承的柔性推进轴系和船舶

Also Published As

Publication number Publication date
CN113165726B (zh) 2022-12-16
CN113165726A (zh) 2021-07-23
WO2020119945A1 (fr) 2020-06-18
EP3666639B1 (fr) 2022-04-06

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