EP2420443B1 - Entraînement de nacelle électrique pour un dispositif flottant doté d'un refroidissement de stator interne - Google Patents

Entraînement de nacelle électrique pour un dispositif flottant doté d'un refroidissement de stator interne Download PDF

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Publication number
EP2420443B1
EP2420443B1 EP20110165672 EP11165672A EP2420443B1 EP 2420443 B1 EP2420443 B1 EP 2420443B1 EP 20110165672 EP20110165672 EP 20110165672 EP 11165672 A EP11165672 A EP 11165672A EP 2420443 B1 EP2420443 B1 EP 2420443B1
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EP
European Patent Office
Prior art keywords
stator
space
underwater housing
housing
nacelle drive
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EP20110165672
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German (de)
English (en)
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EP2420443A1 (fr
Inventor
Dierk SCHRÖDER
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Siemens AG
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Siemens AG
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    • 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
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • B63H21/383—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like for handling cooling-water
    • 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
    • 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

Definitions

  • the invention relates to an electric nacelle drive for a floating device such as a ship or an offshore platform according to the preamble of patent claim 1;
  • a pod drive is for example from the DE 877 254 C known.
  • Electric pod drives are mostly used as a propulsion drive for larger floating equipment, e.g. Ships and offshore platforms, and are often referred to as pod drives, thrusters or rudder propellers. They are rotatable by means of a shaft on a body of the floating device, e.g. mounted in the stern of a ship, and typically have a power of more than 0.5 MW, usually from about 0.5 to 30 MW.
  • Electric nacelle propulsion systems typically include a gondola underwater housing circumscribed by water having a propeller shaft rotatably mounted therein with at least one propeller disposed thereon and an electric motor disposed in the underwater housing having a stator and a rotor for driving the propeller shaft.
  • On the propeller shaft can be arranged at both ends in each case a propeller.
  • the propellers can be driven in the same direction or in opposite directions by means of a gearbox.
  • a pod drive may also include two electric motors disposed in the underwater housing, each driving a propeller shaft with a propeller disposed thereon.
  • the electric motors in such gondola drives must be characterized by the smallest possible diameter and low speed with the highest possible torque. This requires special measures to dissipate the resulting engine heat, especially at high power levels.
  • One way to dissipate engine heat is to circulate air axially around the engine in a housing and recool this air in the vessel.
  • a relatively large space between the stator and the underwater housing is required, which leads to an increase in the diameter of the underwater housing, and large air ducts must be guided by the shaft and a twisting device for rotating the nacelle drive.
  • a relatively large recooling device is needed in the floating device, which must be near the nacelle drive, where there is often no space (e.g., for landing craft and ferries).
  • Another possibility is to dehumidify the engine directly via the underwater housing through the water flowing around the underwater housing.
  • the stator is pressed directly into the underwater housing.
  • the stator housing particularly good heat conducting materials must be used.
  • a pod drive is known in which there is a ring-shaped gap between a housing of the engine and the underwater housing, which is flowed through by the gondola flooding water, so that the heat of the engine is dissipated.
  • the problem here is that the gondola flooding water can lead to impurities that can clog the gap and thus can lead to losses in heat dissipation.
  • the gondola flooding water may have different temperatures depending on the location of the floating device. A heat dissipation over the gondola flooding water can therefore not be sufficient at high power.
  • the space in which flows for cooling the motor a cooling liquid for which the underwater housing flowing around water, that is, the engine is not directly cooled by the water flowing around the underwater housing. Instead, heat is transferred from the stator via the cooling liquid in the space to the portion of the underwater housing that defines the space and thence to the water that flows around the underwater housing. Since the water flowing around the underwater housing does not flow in the room, it is possible to prevent clogging of the room by contaminants.
  • a liquid coolant the comparatively better heat transfer capacity of liquids to air is used for good heat dissipation.
  • a rapid distribution of heat over a large area can be carried out, which can be avoided overheating punctual.
  • Another advantage over a direct heat dissipation through the underwater housing is that it is more independent of the temperature of the water flowing around the underwater housing and the cooling of the engine can be tested without this water.
  • the space extends in the longitudinal direction of the stator over at least the entire length of the stator, preferably including winding heads of the stator. This creates a large cooling surface for good heat dissipation of the engine.
  • a particularly good heat dissipation is possible if the space in the circumferential direction of the stator extends over at least a major part of its circumference, preferably even over its entire circumference.
  • the stator is supported on the housing via a plurality of support elements that run through the space.
  • the support elements can also be used to stiffen the housing and the motor arranged therein.
  • you can serve the support elements of particular advantage for the steering of the cooling liquid in the room.
  • the support elements are designed for this purpose as ribs, which preferably extend in the longitudinal direction of the motor.
  • the cooling liquid is distilled water.
  • Conductivity measurement of the distilled water makes it very easy to monitor the cooling for a leak. If necessary, an antifreeze can be added to the water for ice travel.
  • the electric motor is designed as a permanent magnetically excited motor, since such motors generate comparatively little heat.
  • FIG. 1 shows in a simplified and schematic representation a longitudinal section through a nacelle drive 1, which serves as a drive device for a floating device, such as a ship or an offshore platform, and this purpose is rotatably mounted about an axis A on the hull of the floating device 2.
  • a gondola drive is often referred to as a rudder propeller or pod drive and usually has a drive power of 0.5 to 30 MW.
  • the nacelle drive 1 comprises a hydrodynamically optimized designed underwater housing 3, which is arranged by means of a shaft 4 rotatably mounted on the hull of the floating device 2.
  • a propeller shaft 5 is rotatably supported by bearing 6 within the housing 3 and led out of the housing 3.
  • On the propeller shaft 5 is seated at both ends in each case one outside the housing 3 arranged propeller 7.
  • the propeller shaft 5 is driven by a likewise disposed within the housing 3 electric motor 8.
  • the two propellers 7 are driven by the motor 8 in the same direction.
  • the two propellers 7 can also be driven in opposite directions by means of a transmission arranged in the underwater housing 3.
  • two electric motors arranged back to back in the underwater housing 3 may also be present, each of which has an electric motor Propeller shaft drive only one of the two propellers 7.
  • the electric motor 8 comprises a stator 9 and a rotator or rotor 10 connected in a rotationally fixed manner to the shaft 5.
  • the electric motor 8 is preferably a motor permanently magnetically excited on the rotor side.
  • the housing 3 in this case has two end portions 13, which form the end face of the housing 3 and in which the propeller shaft 5 is rotatably mounted, and arranged between the two end portions 13 central housing portion 14, which forms the peripheral surface of the housing 3 and in its area the motor 8 is arranged.
  • a space 15 is formed between the stator 9 and the central housing portion 14 of the underwater housing 3, which is bounded for the most part by the stator 9 and a designated 16 portion of the underwater housing and in which for cooling the motor 8, a cooling liquid, preferably distilled water, circulated. If necessary, an anti-freeze agent may be added to the water for ice travel.
  • a cooling liquid preferably distilled water
  • the space 15 is closed for the water flowing around the underwater housing, i. this water can not flow through the space 15.
  • cooling liquid Via the circulating between the outer diameter of the stator 9 and the inner diameter of the central housing portion 14 cooling liquid is a heat transfer from the stator 9 to the portion 16 of the underwater housing, which limits the space 15, and from there to the underwater housing 3 around flowing water.
  • the space 15 extends in the longitudinal direction of the stator 9 over the entire length of the stator 9 including the winding heads of the stator and in the circumferential direction of the stator 9 over its entire peripheral surface. Through the space 15 is thus a cooling liquid ring is formed around the electric motor 8.
  • this can - as in the case of the embodiment - be difficult in the region of the connection of the housing 3 to the shaft 4.
  • the outer surface of the underwater housing 3 flowed around by water increases and thus good heat dissipation to the water flowing around can be achieved.
  • the stator 9 is supported on the housing 3 via a plurality of support elements 17 which extend through the space 15.
  • the support elements 17 are formed as ribs extending in the longitudinal direction of the motor 8 and stator 9.
  • the support members 17 are used for torque transmission from the motor 8 to the housing 3, for guiding the cooling liquid in the space 15 and for stiffening the entire arrangement.
  • the motor 8 may be positively or frictionally connected to the support members 17.
  • the stator 9 can be fixed in the housing 3 by shrinking into a housing 3 provided with the support elements 17.
  • FIG. 3 is shown in a partial plan view of the space 15 and the underlying stator 9, are formed by the arrangement and the course of the rib-shaped support members 17 in the space 15 channels for the cooling liquid through which the cooling liquid in the longitudinal direction of the stator 9 alternately from a End of the stator 9 flows to the other end of the stator 9.
  • the cooling liquid is deflected by passages 18 at the ends of the stator 9 in each case by 180 ° in its flow direction.
  • a part of the engine heat can be dissipated via a cooling circuit 20 which is connected to the space 15 and comprising a pump 21 and a heat exchanger 22 for a re-cooling of the cooling liquid.
  • the heat exchanger 22 may for example be designed by a double wall of the shaft 4, which is cooled by the water flowing around the shaft 4.
  • the heat exchanger 22 may also be arranged in the floating device heat exchanger which is connected via a piping system. It is also possible to carry out the recooling via a refrigeration unit (air conditioning).
  • the stator 9 is usually constructed from a plurality of individual components, here for example a stator tube 9a with iron teeth 9b, in which stator windings with winding heads 9c are inserted.
  • the stator 9 with the cooling chamber 15 with the rib-shaped support elements 17 may together with a cable connection box 31 and parts of the underwater housing 3 also form a unit 30, attached to the not shown flanges of the shaft 4 and the bilge hoods 34 of the underwater housing 3 of the nacelle drive can be.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (8)

  1. Entraînement ( 1 ) de nacelle pour un dispositif ( 2 ) flottant comprenant :
    - un carter ( 3 ) submersible, autour duquel s'écoule de l'eau et ayant un arbre ( 5 ) d'hélice qui y est monté tournant et qui a au moins une hélice ( 7 ) qui y est montée,
    - un moteur ( 8 ) électrique disposé dans le carter ( 3 ) submersible et ayant un stator ( 9 ) et un rotor ( 10 ) pour entraîner l'arbre ( 5 ) de l'hélice,
    dans lequel il est formé entre le stator ( 9 ) et le carter ( 3 ) submersible un espace ( 15 ) qui est délimité au moins en partie par le stator ( 15 ) et par une partie ( 16 ) du carter ( 15 ) submersible et dans lequel s'écoule un liquide de refroidissement du moteur ( 8 ),
    dans lequel l'espace ( 15 ) est fermé à de l'eau s'écoulant autour du carter ( 3 ) submersible et il s'effectue une transmission de chaleur par le liquide de refroidissement s'écoulant dans l'espace ( 15 ) du stator ( 9 ) à la partie du carter ( 3 ) submersible qui délimite l'espace ( 15 ) et de là à l'eau s'écoulant autour du carter ( 3 ) submersible,
    caractérisé en ce que l'évacuation de toute la chaleur du moteur s'effectue par le liquide de refroidissement dans l'espace ( 15 ) sur la partie ( 16 ) du carter ( 3 ) submersible, qui délimite l'espace ( 15 ) et de là sur l'eau s'écoulant autour du carter ( 3 ) submersible.
  2. Entraînement ( 1 ) de nacelle suivant la revendication 1, caractérisé en ce que l'espace ( 15 ) s'étend dans la direction longitudinale du stator ( 9 ) au moins sur toute sa longueur, y compris de préférence de têtes de bobine du stator ( 9 ).
  3. Entraînement ( 1 ) de nacelle suivant la revendication 1 ou 2, caractérisé en ce que l'espace ( 15 ) s'étend dans la direction périphérique du stator ( 9 ) au moins sur la plus grande partie de sa périphérie, de préférence sur toute sa périphérie.
  4. Entraînement ( 1 ) de nacelle suivant l'une des revendications précédentes, caractérisé en ce que le stator ( 9 ) s'appuie sur le carter ( 3 ) par plusieurs éléments ( 17 ) d'appui qui s'étendent dans l'espace ( 15 ).
  5. Entraînement ( 1 ) de nacelle suivant la revendication 4, caractérisé en ce que les éléments ( 17 ) d'appui servent à diriger le fluide de refroidissement dans l'espace ( 15 ).
  6. Entraînement ( 1 ) de nacelle suivant la revendication 4 ou 5, caractérisé en ce que les éléments ( 17 ) d'appui sont constitués sous la forme de nervures qui s'étendent de préférence dans la direction longitudinale du moteur ( 8 ).
  7. Entraînement ( 1 ) de nacelle suivant l'une des revendications précédentes, caractérisé en ce que le liquide de refroidissement est de l'eau distillée.
  8. Entraînement ( 1 ) de nacelle suivant l'une des revendications précédentes, caractérisé en ce que le moteur ( 8 ) électrique est constitué sous la forme d'un moteur à excitation magnétique permanente.
EP20110165672 2010-08-20 2011-05-11 Entraînement de nacelle électrique pour un dispositif flottant doté d'un refroidissement de stator interne Active EP2420443B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010039609A DE102010039609A1 (de) 2010-08-20 2010-08-20 Elektrischer Gondelantrieb für eine schwimmende Einrichtung mit interner Statorkühlung

Publications (2)

Publication Number Publication Date
EP2420443A1 EP2420443A1 (fr) 2012-02-22
EP2420443B1 true EP2420443B1 (fr) 2014-08-06

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EP20110165672 Active EP2420443B1 (fr) 2010-08-20 2011-05-11 Entraînement de nacelle électrique pour un dispositif flottant doté d'un refroidissement de stator interne

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EP (1) EP2420443B1 (fr)
DE (1) DE102010039609A1 (fr)
ES (1) ES2500943T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017050447A1 (fr) 2015-09-22 2017-03-30 Siemens Aktiengesellschaft Refroidissement d'une machine électrique tournante

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2824027T3 (en) * 2013-07-09 2016-06-06 Abb Oy Progress unit for a ship
EP2876039A1 (fr) * 2013-11-20 2015-05-27 Siemens Aktiengesellschaft Refroidissement d'un propulseur de nacelle électrique
EP2949574B1 (fr) * 2014-05-30 2018-07-11 ABB Schweiz AG Unité de propulsion pod d'un navire
CN106573667B (zh) * 2014-06-03 2018-04-06 劳斯莱斯股份公司 吊舱推进装置及其冷却方法
CN104229113B (zh) * 2014-09-24 2017-11-17 江苏科技大学 吊舱式船舶电力直驱推进装置、推进系统及推进方法
EP3020625A1 (fr) 2014-11-13 2016-05-18 Siemens Aktiengesellschaft Entraînement de nacelle électrique
CN107070064B (zh) * 2016-10-27 2023-11-24 中国人民解放军海军工程大学 水下电机电缆的橡胶双密封结构
CN109301973B (zh) * 2017-07-24 2021-07-30 西门子公司 电机和船舶推进装置

Family Cites Families (5)

* 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
EP1010614B1 (fr) * 1998-12-18 2002-10-23 ABB Industria S.p.A. Module de propulsion et de gouverne pour navires de guerre
DE10158757A1 (de) * 2001-11-29 2003-06-18 Siemens Ag Schiffsantrieb
DE10322275A1 (de) * 2003-05-16 2004-12-02 Siemens Ag Kühlsystem für Elektrisches Antriebssystem mit Synchronmaschine mit Hochtemperatur-Supraleitender Feldwicklung für Propeller- und Jetantrieb mit besonders kleinen Durchmessern in schwimmenden Geräten
DE102008045667A1 (de) * 2008-09-03 2010-03-04 Siemens Aktiengesellschaft Dynamoelektrische Maschine mit Kühlung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017050447A1 (fr) 2015-09-22 2017-03-30 Siemens Aktiengesellschaft Refroidissement d'une machine électrique tournante

Also Published As

Publication number Publication date
ES2500943T3 (es) 2014-10-01
EP2420443A1 (fr) 2012-02-22
DE102010039609A1 (de) 2012-02-23

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