WO2000040460A1 - Propulsion device for naval vessel - Google Patents

Propulsion device for naval vessel Download PDF

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Publication number
WO2000040460A1
WO2000040460A1 PCT/FR1999/003260 FR9903260W WO0040460A1 WO 2000040460 A1 WO2000040460 A1 WO 2000040460A1 FR 9903260 W FR9903260 W FR 9903260W WO 0040460 A1 WO0040460 A1 WO 0040460A1
Authority
WO
WIPO (PCT)
Prior art keywords
nacelle
shaft
rotor
propulsion
propulsion device
Prior art date
Application number
PCT/FR1999/003260
Other languages
French (fr)
Inventor
Jean-Marc Canini
Raymond Michaux
Original Assignee
Jeumont Sa
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 Jeumont Sa filed Critical Jeumont Sa
Priority to JP2000592183A priority Critical patent/JP2002534316A/en
Priority to EP99961152A priority patent/EP1140618A1/en
Publication of WO2000040460A1 publication Critical patent/WO2000040460A1/en

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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
    • 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
    • B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
    • B63H5/10—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • 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

  • Propulsion device for a naval vessel.
  • the invention relates to a device for propelling a naval vessel such as a ship, a submarine, an oil platform or a barge.
  • Propulsion devices are known for ships or more generally for buildings at least partially submerged in a body of water such as a sea or an ocean.
  • Such propulsion devices may include a nacelle on which is mounted at least one rotary propulsion propeller driven by a motor.
  • the nacelle which has a profiled shape, is generally fixed to the end of a leg mounted to rotate around a direction perpendicular to the longitudinal direction of the building, according to which this building moves in water.
  • the leg which is supported by the structure of the building is associated with a pivoting device making it possible to adjust the orientation of the leg and of the nacelle.
  • propulsion devices comprising at least one engine integrated into the nacelle.
  • Such an arrangement makes it possible in particular to eliminate the drive motor disposed in the building and the members for transmitting rotation to the propellers.
  • the stator of the motor is fixed around the part of the nacelle on which the rotor is mounted, facing rotor.
  • the rotor is mounted between two parts of the stator and opposite the stops making it possible to transmit the thrust to the nacelle and, through it, to the ship.
  • the nacelle has an outer casing of generally profiled shape inside which are arranged the stator parts and the rotor parts of the electric propeller drive motor.
  • the envelope of the nacelle comprises at least one annular opening allowing the passage of the propellers fixed to the stator, towards the body of water in which the nacelle is immersed.
  • propellers constituting one or more pairs of counter-rotating propellers, that is to say propellers rotating in opposite directions and having blades of propeller with reversed orientations placed one after the other. This increases the efficiency of the propulsion device.
  • the object of the invention is therefore to propose a device for propelling a naval vessel in a longitudinal direction of the vessel, comprising a nacelle on which is mounted at least one rotary propeller and at least one electric drive motor.
  • the propeller and at least one suspension and orientation leg of the nacelle substantially perpendicular to the longitudinal direction of the building, pivotally mounted around an axis perpendicular to the longitudinal direction, by a first end on a part of the building structure and secured to the nacelle by a second end, this propulsion device making it possible to considerably simplify the construction of the nacelle, in the case of propulsion provided by at least one pair of counter-rotating propellers.
  • the nacelle comprises a substantially longitudinal steering shaft secured to the second end of the suspension and orientation leg, on which is mounted at least one pair of counter-rotating propellers, each of the propellers being secured to a support rotor rotatably mounted around the nacelle shaft, carrying at least one rotor element placed opposite at least one stator fixed around the nacelle shaft and disposed inside the support rotor which constitutes at least part of an envelope of the nacelle.
  • Figure 1 is a side elevational view in partial section of the lower part of a building and the propulsion nacelle of this building.
  • Figure 2 is an enlarged view of part of Figure 1.
  • Figure 3 is a side elevational view in partial section of the lower part of a building and the propulsion nacelle of this building, according to an alternative embodiment.
  • FIG. 1 we see a lower part 2 of the structure of a ship generally designated by the reference 1.
  • the lower part 2 of the structure is crossed by an opening in which is engaged an upper end part d 'a suspension and orientation leg 3 arranged vertically and rotatably mounted in the structure 2 around its vertical axis 4.
  • a nacelle 5 for propelling the ship 1 is fixed to the lower end of the suspension and orientation leg 3.
  • Orientation means 6 fixed to the structure 2 of the building 1 make it possible to orient the suspension and orientation leg 3 and the nacelle 5 around the vertical axis 4 of the strut.
  • the nacelle 5 ensures the propulsion of the ship, in a general longitudinal direction of this ship substantially parallel to the axis 7 of the nacelle.
  • the nacelle 5 comprises a longitudinal shaft 8 fixed relative to the nacelle, of axis 7, of tubular shape, on which are mounted two propulsion assemblies 9 and 10 of the ship 1.
  • the nacelle 5 further comprises profiling elements 11 and 12 fixed to the axial ends of the shaft 8.
  • the propulsion assemblies 9 and 10 each comprise a first propulsion unit respectively 9a and 10a and a second propulsion unit, respectively 9b and 10b.
  • the first and second propulsion units of a propulsion assembly comprise counter-rotating propellers, that is to say propellers rotating in opposite directions to one another, the blades 14 of which are oriented in an inverted manner.
  • the propulsion units 9a, 9b, 10a and 10b are identical. Only one propulsion unit will therefore be described with reference to FIGS. 1 and 2.
  • the propulsion unit (for example 9a) comprises an electric drive motor 13 and a propeller constituted by blades 14 fixed on a rotor support 15 of the motor 13 whose stator 16 is disposed inside the rotor support 15 produced in an annular form.
  • the rotor support 15 is rotatably mounted on the shaft 8 of the nacelle, around the axis 7, by means of two bearings 17 and 17 '.
  • the rotor support 15 is made in two parts which are assembled together according to a junction zone 19.
  • Each of the two parts of the rotor support has a circular flange on the internal surface of which are fixed rotor elements 18 which can be constituted for example by permanent magnets distributed circumferentially on the surface of the flange, around the axis 7 of the nacelle also constituting the axis of rotation of the motor 13.
  • the stator 16 comprises a stator support 20 in the form of a disc fixed around the shaft 8 of the nacelle, on which are fixed stator elements 21 preferably constituted by windings associated with ma- genetic.
  • the stator elements 21 are distributed circumferentially on the stator support 20 and arranged opposite the rotor elements 18, on each of the faces of the stator support.
  • the motor 13 constitutes a motor having a double discoid structure.
  • the stator windings 21 are powered so as to generate an axial direction field, that is to say parallel to the axis of rotation 7 of the motor rotating around the axis 7.
  • the stator supply also makes it possible to run the motor at a variable and adjustable speed.
  • the stators of two drive motors of two propulsion units such as 9a, 9b of a propulsion assembly such as 9 are supplied so as to create fields rotating in opposite directions, so that the propulsion assemblies 9a and 9b rotate in opposite directions.
  • the stator supply produces an overall rotation of the rotor supports and of the blades carried by the external lateral surface of the rotor supports.
  • the counter-rotating propellers of each of the propulsion units rotate in opposite directions at the same speed or at a very slightly different speed.
  • the propellers such as 9a and 10a constituting the propellers located upstream in the direction of movement of the ship given by arrow 22, constitute propelling propellers, the propellers located immediately downstream of the propellers 9a and 10a of the assemblies 9 and 10 constituting straightening propellers.
  • the righting propellers 9b and 10b which rotate at the same speed or at a speed very slightly different from the speed of the propelling propellers, absorb the same power as the propelling propellers.
  • the various drive motor assemblies of the propulsion units 9a, 9b, 10a and 10b can be controlled independently of one another to rotate the propellers in the desired direction and at the speed required.
  • the construction of the nacelle is particularly simple, since the envelope of the nacelle is constituted solely by profiiage elements 11 and 12 and by the rotor supports 15 carrying the blades 14 of the propellers.
  • the stator supports are fixed directly to the shaft 8 of the nacelle and the rotor supports are themselves fixed around the shaft of the nacelle, by means of bearings which ensure the transmission of the propelling force to the nacelle and the ship.
  • the rotor supports constituting parts of the shell of the nacelle are not necessarily made in a watertight manner and do not have to withstand the pressure of the water in which the ship is moving. .
  • the rotor supports 15 are traversed by openings such as 23 allowing the passage of seawater.
  • the elements of the engine 13 must therefore be provided with insulation resistant to seawater.
  • the rotor elements of which are made up of permanent magnets, special protection must be provided for the magnets, of the plate type made of composite material, paint or resin.
  • the bearings 17 and 17 ' are constituted by thrust bearings making it possible to transmit the propulsion forces to the nacelle and to the ship.
  • These bearings can be produced in the form of hydrodynamic bearings operating in seawater. It is also possible to use a single double-acting thrust bearing produced in the form of a hydrodynamic bearing operating in seawater.
  • the shaft 8 is made of three parts 8a, 8b and 8c which are assembled during assembly of the propulsion device.
  • the central part 8a of the shaft is integral with the suspension and orientation strut 3 and carries the propulsion units 9b and 10a, the right part 8b carries the propulsion unit 9a and the left part 8c, l propulsion unit 10b.
  • the propulsion assemblies 9 and 10 consist of counter-rotating propellers.
  • One of the propulsion systems could have a single propeller.
  • the propulsion device according to the invention may include a nacelle whose shaft supports any number of propulsion assemblies each consisting of two counter-rotating propellers driven by an electric motor.
  • the propulsion device according to the invention can be used on any type of ship and on any installation at least partially submerged such as an oil platform or a barge.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Power Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Wind Motors (AREA)

Abstract

The invention concerns a naval vessel (1) comprising a pod (5) whereon is mounted a rotary propulsion device (9a, 9b, 10a, 10b) and at least an electric motor (13) driving the propeller in rotation. The pod comprises a longitudinally oriented shaft (8) fixed at one end of a suspension and orientation strut (3) mounted rotating about an axis (4) on the naval vessel (1) structure (2). The pod (5) shaft (8) carries at least a pair of contra-rotating propellers (9, 10). Each of the propellers in integral with a rotor support (15) mounted rotating about the pod shaft (8), bearing at least a rotor element placed opposite at least a stator (16) fixed around the pod shaft (8) and arranged inside the rotor support (15) which constitutes at least part of a casing for the pod (5).

Description

Dispositif de propulsion d ' un bâtiment naval . Propulsion device for a naval vessel.
L'invention concerne un dispositif de propulsion d'un bâtiment naval tel qu'un navire, un sous-marin, une plate-forme pétrolière ou une barge.The invention relates to a device for propelling a naval vessel such as a ship, a submarine, an oil platform or a barge.
On connaît des dispositifs de propulsion pour des navires ou plus généralement pour des bâtiments au moins partiellement immergés dans une masse d'eau telle qu'une mer ou un océan.Propulsion devices are known for ships or more generally for buildings at least partially submerged in a body of water such as a sea or an ocean.
De tels dispositifs de propulsion peuvent comporter une nacelle sur laquelle est montée au moins une hélice de propulsion rotative entraînée par un moteur. La nacelle, qui présente une forme profilée, est généralement fixée à l'extrémité d'une jambe montée rotative autour d'une direction per- pendiculaire à la direction longitudinale du bâtiment, suivant laquelle ce bâtiment se déplace dans l'eau. Pour cela, la jambe qui est supportée par la structure du bâtiment est associée à un dispositif de pivotement permettant de régler l'orientation de la jambe et de la nacelle.Such propulsion devices may include a nacelle on which is mounted at least one rotary propulsion propeller driven by a motor. The nacelle, which has a profiled shape, is generally fixed to the end of a leg mounted to rotate around a direction perpendicular to the longitudinal direction of the building, according to which this building moves in water. For this, the leg which is supported by the structure of the building is associated with a pivoting device making it possible to adjust the orientation of the leg and of the nacelle.
Pour entraîner en rotation la ou les hélices portées par la nacelle, on a proposé d'utiliser un moteur électrique ou un moto-réducteur porté par une partie de structure du bâtiment et comportant au moins un arbre de sortie disposé à l'intérieur de la jambe de suspension et d'orientation s'étendant jusqu'à la nacelle où l'entraînement d'un arbre, solidaire des hélices, est assuré par l'intermédiaire d'une pignonnerie. Un tel dispositif présente des inconvénients, en particulier du fait qu'il est nécessaire de loger le moteur à l'intérieur du bâtiment et de transmettre le couple du moteur à distance, suivant toute la longueur de la jambe de suspension et d'orientation. Il est également nécessaire de prévoir une pignonnerie permettant d'effectuer des renvois d'angie pour entraîner l'arbre disposé dans la nacelle.To rotate the propeller (s) carried by the nacelle, it has been proposed to use an electric motor or a geared motor carried by a structural part of the building and comprising at least one output shaft disposed inside the suspension and orientation leg extending to the nacelle where the drive of a shaft, secured to the propellers, is ensured by means of a pinion. Such a device has drawbacks, in particular the fact that it is necessary to house the engine inside the building and to transmit the engine torque from a distance, along the entire length of the suspension and orientation strut. It is also necessary to provide a gear making it possible to carry out angular references to drive the tree arranged in the nacelle.
On a donc proposé d'utiliser des dispositifs de propulsion comportant au moins un moteur intégré à la nacelle. Une telle disposition permet en particulier de supprimer le moteur d'entraînement disposé dans le bâtiment et les organes de transmission de la rotation aux hélices. Dans le cas d'une utilisation d'un tel moteur intégré à la nacelle, il est possible de fixer directement les hélices sur le rotor du moteur monté rotatif autour d'une partie de la nacelle. Dans ce cas, le stator du moteur est fixé autour de la partie de la nacelle sur laquelle est monté le rotor, en vis-à-vis du rotor. Généralement, le rotor est monté entre deux parties de stator et en vis-à-vis de butées permettant de transmettre la poussée à la nacelle et, par son intermédiaire, au navire. La nacelle comporte une enveloppe externe de forme généralement profilée à l'intérieur de laquelle sont disposées les par- ties de stator et les parties de rotor du moteur électrique d'entraînement des hélices. L'enveloppe de la nacelle comporte au moins une ouverture annulaire permettant le passage des hélices fixées au stator, vers la masse d'eau dans laquelle est plongée la nacelle.It has therefore been proposed to use propulsion devices comprising at least one engine integrated into the nacelle. Such an arrangement makes it possible in particular to eliminate the drive motor disposed in the building and the members for transmitting rotation to the propellers. In the case of the use of such an engine integrated into the nacelle, it is possible to fix the propellers directly on the rotor of the engine rotatably mounted around a part of the nacelle. In this case, the stator of the motor is fixed around the part of the nacelle on which the rotor is mounted, facing rotor. Generally, the rotor is mounted between two parts of the stator and opposite the stops making it possible to transmit the thrust to the nacelle and, through it, to the ship. The nacelle has an outer casing of generally profiled shape inside which are arranged the stator parts and the rotor parts of the electric propeller drive motor. The envelope of the nacelle comprises at least one annular opening allowing the passage of the propellers fixed to the stator, towards the body of water in which the nacelle is immersed.
Il peut être extrêmement avantageux, d'autre part, d'utiliser des héli- ces de propulsion constituant une ou plusieurs paires d'hélices contrarotatives, c'est-à-dire d'hélices tournant en sens inverse et comportant des pales d'hélice ayant des orientations inversées placées l'une à la suite de l'autre. On augmente ainsi le rendement du dispositif de propulsion.On the other hand, it can be extremely advantageous to use propellers constituting one or more pairs of counter-rotating propellers, that is to say propellers rotating in opposite directions and having blades of propeller with reversed orientations placed one after the other. This increases the efficiency of the propulsion device.
L'utilisation de moteurs électriques intégrés à la nacelle est particuliè- rement indiquée dans le cas où la propulsion est assurée par des paires d'hélices contrarotatives, dans la mesure où il suffit alors d'alimenter les stators des moteurs d'entraînement des hélices contrarotatives d'une paire d'hélices, de manière à faire tourner les rotors des moteurs en sens inverse. On évite ainsi en particulier d'exercer des forces de vrillage sur le support de la nacelle. Cependant, la structure des nacelles à moteur intégré connues de l'art antérieur est extrêmement complexe, dans le cas où la propulsion est assurée par une ou a fortiori par plusieurs paires d'hélices contrarotatives.The use of electric motors integrated in the nacelle is particularly indicated in the case where the propulsion is ensured by pairs of counter-rotating propellers, insofar as it then suffices to power the stators of the propeller drive motors contra-rotating a pair of propellers, so that the rotors of the motors rotate in opposite directions. This in particular avoids exerting twisting forces on the support of the nacelle. However, the structure of nacelles with an integrated motor known from the prior art is extremely complex, in the case where the propulsion is provided by one or a fortiori by several pairs of counter-rotating propellers.
Le but de l'invention est donc de proposer un dispositif de propulsion d'un bâtiment naval dans une direction longitudinale du bâtiment, comportant une nacelle sur laquelle est montée au moins une hélice de propulsion rotative et au moins un moteur électrique d'entraînement de l'hélice et au moins une jambe de suspension et d'orientation de la nacelle sensiblement perpendiculaire à la direction longitudinale du bâtiment, montée pivotante autour d'un axe perpendiculaire à la direction longitudinale, par une première extrémité sur une partie de structure du bâtiment et solidaire de la nacelle par une seconde extrémité, ce dispositif de propulsion permettant de simplifier considérablement la construction de la nacelle, dans le cas d'une propulsion assurée par au moins une paire d'hélices contrarotatives.The object of the invention is therefore to propose a device for propelling a naval vessel in a longitudinal direction of the vessel, comprising a nacelle on which is mounted at least one rotary propeller and at least one electric drive motor. the propeller and at least one suspension and orientation leg of the nacelle substantially perpendicular to the longitudinal direction of the building, pivotally mounted around an axis perpendicular to the longitudinal direction, by a first end on a part of the building structure and secured to the nacelle by a second end, this propulsion device making it possible to considerably simplify the construction of the nacelle, in the case of propulsion provided by at least one pair of counter-rotating propellers.
Dans ce but, la nacelle comporte un arbre de direction sensiblement longitudinale solidaire de la seconde extrémité de la jambe de suspension et d'orientation, sur lequel est montée au moins une paire d'hélices contrarotatives, chacune des hélices étant solidaire d'un support de rotor monté rotatif autour de l'arbre de la nacelle, portant au moins un élément de rotor placé en vis-à-vis d'au moins un stator fixé autour de l'arbre de la nacelle et disposé à l'intérieur du support de rotor qui constitue une partie au moins d'une enveloppe de la nacelle.For this purpose, the nacelle comprises a substantially longitudinal steering shaft secured to the second end of the suspension and orientation leg, on which is mounted at least one pair of counter-rotating propellers, each of the propellers being secured to a support rotor rotatably mounted around the nacelle shaft, carrying at least one rotor element placed opposite at least one stator fixed around the nacelle shaft and disposed inside the support rotor which constitutes at least part of an envelope of the nacelle.
Afin de bien faire comprendre l'invention, on va maintenant décrire, à titre d'exemple en se référant aux figures jointes en annexe, un mode de réalisation de l'invention, dans le cas d'une nacelle comportant deux paires d'hélices contrarotatives. La figure 1 est une vue en élévation latérale et en coupe partielle de la partie inférieure d'un bâtiment et de la nacelle de propulsion de ce bâtiment.In order to clearly understand the invention, we will now describe, by way of example with reference to the appended figures, an embodiment of the invention, in the case of a nacelle comprising two pairs of propellers contra-rotating. Figure 1 is a side elevational view in partial section of the lower part of a building and the propulsion nacelle of this building.
La figure 2 est une vue agrandie d'une partie de la figure 1.Figure 2 is an enlarged view of part of Figure 1.
La figure 3 est une vue en élévation latérale et en coupe partielle de la partie inférieure d'un bâtiment et de la nacelle de propulsion de ce bâtiment, suivant une variante de réalisation.Figure 3 is a side elevational view in partial section of the lower part of a building and the propulsion nacelle of this building, according to an alternative embodiment.
Sur la figure 1 , on voit une partie inférieure 2 de la structure d'un navire désignée de manière générale par le repère 1. La partie inférieure 2 de la structure est traversée par une ouverture dans laquelle est engagée une partie d'extrémité supérieure d'une jambe de suspension et d'orientation 3 disposée verticalement et montée rotative dans la structure 2 autour de son axe vertical 4. Une nacelle 5 de propulsion du navire 1 est fixée à l'extrémité inférieure de la jambe de suspension et d'orientation 3. Des moyens d'orientation 6 fixés sur la structure 2 du bâtiment 1 permettent d'orienter la jambe de suspension et d'orientation 3 et la nacelle 5 autour de l'axe vertical 4 de la jambe de force. La nacelle 5 permet d'assurer la propulsion du navire, dans une direction générale longitudinale de ce navire sensiblement parallèle à l'axe 7 de la nacelle.In Figure 1, we see a lower part 2 of the structure of a ship generally designated by the reference 1. The lower part 2 of the structure is crossed by an opening in which is engaged an upper end part d 'a suspension and orientation leg 3 arranged vertically and rotatably mounted in the structure 2 around its vertical axis 4. A nacelle 5 for propelling the ship 1 is fixed to the lower end of the suspension and orientation leg 3. Orientation means 6 fixed to the structure 2 of the building 1 make it possible to orient the suspension and orientation leg 3 and the nacelle 5 around the vertical axis 4 of the strut. The nacelle 5 ensures the propulsion of the ship, in a general longitudinal direction of this ship substantially parallel to the axis 7 of the nacelle.
Selon l'invention, la nacelle 5 comporte un arbre longitudinal 8 fixé par rapport à la nacelle, d'axe 7, de forme tubulaire, sur lequel sont montés deux ensembles de propulsion 9 et 10 du navire 1.According to the invention, the nacelle 5 comprises a longitudinal shaft 8 fixed relative to the nacelle, of axis 7, of tubular shape, on which are mounted two propulsion assemblies 9 and 10 of the ship 1.
La nacelle 5 comporte de plus des éléments de profilage 11 et 12 fixés aux extrémités axiales de l'arbre 8.The nacelle 5 further comprises profiling elements 11 and 12 fixed to the axial ends of the shaft 8.
Les ensembles de propulsion 9 et 10 comportent chacun une pre- mière unité de propulsion respectivement 9a et 10a et une seconde unité de propulsion, respectivement 9b et 10b.The propulsion assemblies 9 and 10 each comprise a first propulsion unit respectively 9a and 10a and a second propulsion unit, respectively 9b and 10b.
La première et la seconde unités de propulsion d'un ensemble de propulsion comportent des hélices contrarotatives, c'est-à-dire des hélices tournant en sens inverse l'une de l'autre, dont les pales 14 sont orientées de manière inversée. Cependant, en ce qui concerne leur structure générale, les unités de propulsion 9a, 9b, 10a et 10b sont identiques. On ne décrira donc qu'une seule unité de propulsion en se référant aux figures 1 et 2.The first and second propulsion units of a propulsion assembly comprise counter-rotating propellers, that is to say propellers rotating in opposite directions to one another, the blades 14 of which are oriented in an inverted manner. However, as regards their general structure, the propulsion units 9a, 9b, 10a and 10b are identical. Only one propulsion unit will therefore be described with reference to FIGS. 1 and 2.
L'unité de propulsion (par exemple 9a) comporte un moteur électrique d'entraînement 13 et une hélice constituée par des pales 14 fixées sur un support de rotor 15 du moteur 13 dont le stator 16 est disposé à l'intérieur du support de rotor 15 réalisé sous une forme annulaire. Le support de rotor 15 est monté rotatif sur l'arbre 8 de la nacelle, autour de l'axe 7, par l'intermédiaire de deux paliers 17 et 17'.The propulsion unit (for example 9a) comprises an electric drive motor 13 and a propeller constituted by blades 14 fixed on a rotor support 15 of the motor 13 whose stator 16 is disposed inside the rotor support 15 produced in an annular form. The rotor support 15 is rotatably mounted on the shaft 8 of the nacelle, around the axis 7, by means of two bearings 17 and 17 '.
De préférence, comme représenté sur la figure 2, le support de rotor 15 est réalisé en deux parties qui sont assemblées entre elles suivant une zone de jonction 19. Chacune des deux parties du support de rotor comporte un flasque circulaire sur la surface interne duquel sont fixés des éléments de rotor 18 qui peuvent être constitués par exemple par des aimants permanents répartis circonférentiellement à la surface du flasque, autour de l'axe 7 de la nacelle constituant également l'axe de rotation du moteur 13.Preferably, as shown in FIG. 2, the rotor support 15 is made in two parts which are assembled together according to a junction zone 19. Each of the two parts of the rotor support has a circular flange on the internal surface of which are fixed rotor elements 18 which can be constituted for example by permanent magnets distributed circumferentially on the surface of the flange, around the axis 7 of the nacelle also constituting the axis of rotation of the motor 13.
Le stator 16 comporte un support de stator 20 en forme de disque fixé autour de l'arbre 8 de la nacelle, sur lequel sont fixés des éléments de stator 21 constitués de préférence par des bobinages associés à des noyaux ma- gnétiques. Les éléments de stator 21 sont répartis circonférentiellement sur le support de stator 20 et disposés en vis-à-vis des éléments de rotor 18, sur chacune des faces du support de stator. Le moteur 13 constitue un moteur ayant une double structure discoïde. Les bobinages 21 du stator sont ali- mentes de manière à engendrer un champ de direction axiale, c'est-à-dire parallèle à l'axe de rotation 7 du moteur tournant autour de l'axe 7.The stator 16 comprises a stator support 20 in the form of a disc fixed around the shaft 8 of the nacelle, on which are fixed stator elements 21 preferably constituted by windings associated with ma- genetic. The stator elements 21 are distributed circumferentially on the stator support 20 and arranged opposite the rotor elements 18, on each of the faces of the stator support. The motor 13 constitutes a motor having a double discoid structure. The stator windings 21 are powered so as to generate an axial direction field, that is to say parallel to the axis of rotation 7 of the motor rotating around the axis 7.
L'alimentation des stators permet également de faire tourner le moteur à une vitesse variable et réglable.The stator supply also makes it possible to run the motor at a variable and adjustable speed.
Les stators de deux moteurs d'entraînement de deux unités de pro- pulsion tels que 9a, 9b d'un ensemble de propulsion tel que 9 sont alimentés de manière à créer des champs tournant en sens inverse, de telle sorte que les ensembles de propulsion 9a et 9b tournent en sens inverse. L'alimentation des stators produit une rotation d'ensemble des supports de rotor et des pales portées par la surface latérale externe des supports de rotor.The stators of two drive motors of two propulsion units such as 9a, 9b of a propulsion assembly such as 9 are supplied so as to create fields rotating in opposite directions, so that the propulsion assemblies 9a and 9b rotate in opposite directions. The stator supply produces an overall rotation of the rotor supports and of the blades carried by the external lateral surface of the rotor supports.
La rotation en sens inverse des unités de propulsion de chacun des ensembles 9 et 10, ces unités constituant des hélices contrarotatives, permet d'obtenir, entre les deux hélices contrarotatives, un flux de liquide purement axial. On diminue ainsi les pertes du dispositif de propulsion et, de plus, on évite de vriller le support de la nacelle constitué par l'axe tubulaire 8. Le rendement du moteur de propulsion est ainsi considérablement accru.The rotation in the opposite direction of the propulsion units of each of the assemblies 9 and 10, these units constituting counter-rotating propellers, makes it possible to obtain, between the two counter-rotating propellers, a flow of purely axial liquid. This reduces the losses of the propulsion device and, in addition, avoids twisting the support of the nacelle constituted by the tubular axis 8. The efficiency of the propulsion engine is thus considerably increased.
Les hélices contrarotatives de chacun des ensembles de propulsion tournent en sens inverse à la même vitesse ou à une vitesse très légèrement différente. Les hélices telles que 9a et 10a, constituant les hélices situées en amont dans le sens de déplacement du navire donné par la flèche 22, constituent des hélices propulsives, les hélices situées immédiatement en aval des hélices 9a et 10a des ensembles 9 et 10 constituant des hélices redresseuses. Les hélices redresseuses 9b et 10b, qui tournent à la même vitesse ou à une vitesse très légèrement différente de la vitesse des hélices propulsives absorbent la même puissance que les hélices propulsives. Les différents ensembles moteurs d'entraînement des unités de propulsion 9a, 9b, 10a et 10b peuvent être commandés indépendamment les uns des autres pour réaliser la mise en rotation des hélices dans le sens et à la vitesse voulus. De plus, la construction de la nacelle est particulièrement simple, puisque l'enveloppe de la nacelle est constituée uniquement par des éléments de profiiage 11 et 12 et par les supports de rotor 15 portant les pales 14 des hélices. Les supports de stator sont fixés directement sur l'arbre 8 de la nacelle et les supports de rotor sont eux-mêmes fixés autour de l'arbre de la nacelle, par l'intermédiaire de paliers qui assurent la transmission de la force de propulsion à la nacelle et au navire.The counter-rotating propellers of each of the propulsion units rotate in opposite directions at the same speed or at a very slightly different speed. The propellers such as 9a and 10a, constituting the propellers located upstream in the direction of movement of the ship given by arrow 22, constitute propelling propellers, the propellers located immediately downstream of the propellers 9a and 10a of the assemblies 9 and 10 constituting straightening propellers. The righting propellers 9b and 10b, which rotate at the same speed or at a speed very slightly different from the speed of the propelling propellers, absorb the same power as the propelling propellers. The various drive motor assemblies of the propulsion units 9a, 9b, 10a and 10b can be controlled independently of one another to rotate the propellers in the desired direction and at the speed required. In addition, the construction of the nacelle is particularly simple, since the envelope of the nacelle is constituted solely by profiiage elements 11 and 12 and by the rotor supports 15 carrying the blades 14 of the propellers. The stator supports are fixed directly to the shaft 8 of the nacelle and the rotor supports are themselves fixed around the shaft of the nacelle, by means of bearings which ensure the transmission of the propelling force to the nacelle and the ship.
D'autre part, les supports de rotor constituant des parties de l'enveloppe de la nacelle ne sont pas réalisés nécessairement de manière étanche à l'eau et n'ont pas à supporter la pression de l'eau dans laquelle se déplace le navire. Les supports de rotor 15 sont traversés par des ouvertures telles que 23 permettant le passage de l'eau de mer. Les éléments du moteur 13 doivent donc être pourvus d'une isolation résistant à l'eau de mer. Dans le cas de moteurs de propulsion de type synchrone dont les éléments de rotor sont constitués par des aimants permanents, une protection particu- lière doit être prévue pour les aimants, du type plaque en matériau composite, peinture ou résine.On the other hand, the rotor supports constituting parts of the shell of the nacelle are not necessarily made in a watertight manner and do not have to withstand the pressure of the water in which the ship is moving. . The rotor supports 15 are traversed by openings such as 23 allowing the passage of seawater. The elements of the engine 13 must therefore be provided with insulation resistant to seawater. In the case of engines of synchronous type propulsion, the rotor elements of which are made up of permanent magnets, special protection must be provided for the magnets, of the plate type made of composite material, paint or resin.
Les paliers 17 et 17' sont constitués par des paliers de butées permettant de transmettre les efforts de propulsion à la nacelle et au navire. Ces paliers peuvent être réalisés sous la forme de paliers hydrodynamiques fonctionnant dans l'eau de mer. On pourrait également utiliser un seul palier de butée à double effet réalisé sous la forme d'un palier hydrodynamique fonctionnant dans l'eau de mer.The bearings 17 and 17 'are constituted by thrust bearings making it possible to transmit the propulsion forces to the nacelle and to the ship. These bearings can be produced in the form of hydrodynamic bearings operating in seawater. It is also possible to use a single double-acting thrust bearing produced in the form of a hydrodynamic bearing operating in seawater.
Du fait que non seulement le support de rotor15 constituant une partie de l'enveloppe de la nacelle et de la carcasse du moteur, mais encore les éléments de rotor et le stator sont noyés dans l'eau de mer, le refroidissement du moteur est très efficace. Ce refroidissement intense permet de réduire la taille du moteur de propulsion. Sur la figure 3, on a représenté une variante de réalisation du dispositif de propulsion suivant l'invention. Les éléments correspondants sur les figures 1 et 3 portent les mêmes repères.Because not only the rotor support 15 constituting a part of the envelope of the nacelle and the carcass of the engine, but also the rotor elements and the stator are embedded in sea water, the cooling of the engine is very effective. This intense cooling reduces the size of the propulsion engine. In Figure 3, there is shown an alternative embodiment of the propulsion device according to the invention. The corresponding elements in Figures 1 and 3 have the same references.
Selon la variante de la figure 3, l'arbre 8 est réalisé en trois parties 8a, 8b et 8c qui sont assemblées lors du montage du dispositif de propulsion.According to the variant of Figure 3, the shaft 8 is made of three parts 8a, 8b and 8c which are assembled during assembly of the propulsion device.
La partie centrale 8a de l'arbre est solidaire de la jambe de suspension et d'orientation 3 et porte les unités de propulsion 9b et 10a, la partie de droite 8b porte l'unité de propulsion 9a et la partie de gauche 8c, l'unité de propulsion 10b. Comme précédemment, les ensembles de propulsion 9 et 10 sont constitués d'hélices contrarotatives. L'un des ensembles de propulsion pourrait comporter une seule hélice.The central part 8a of the shaft is integral with the suspension and orientation strut 3 and carries the propulsion units 9b and 10a, the right part 8b carries the propulsion unit 9a and the left part 8c, l propulsion unit 10b. As before, the propulsion assemblies 9 and 10 consist of counter-rotating propellers. One of the propulsion systems could have a single propeller.
La variante représentée sur la figure 3 permet une réalisation modulaire du dispositif de propulsion. Bien entendu, le dispositif de propulsion suivant l'invention peut comporter une nacelle dont l'arbre supporte un nombre quelconque d'ensembles de propulsion constitués chacun de deux hélices contrarotatives entraînées par un moteur électrique.The variant shown in Figure 3 allows a modular embodiment of the propulsion device. Of course, the propulsion device according to the invention may include a nacelle whose shaft supports any number of propulsion assemblies each consisting of two counter-rotating propellers driven by an electric motor.
Le dispositif de propulsion suivant l'invention peut être utilisé sur tout type de navire et sur toute installation au moins partiellement immergée telle qu'une plate-forme pétrolière ou une barge. The propulsion device according to the invention can be used on any type of ship and on any installation at least partially submerged such as an oil platform or a barge.

Claims

REVENDICATIONS 1.- Dispositif de propulsion d'un bâtiment naval (1 ) dans une direction longitudinale (22) du bâtiment (1 ), comportant une nacelle (5) sur laquelle est montée au moins une hélice de propulsion rotative (14) et au moins un moteur électrique (13) d'entraînement de l'hélice (14), et au moins une jambe de suspension et d'orientation (3) de la nacelle (5) sensiblement perpendiculaire à la direction longitudinale (22) du bâtiment, montée pivotante autour d'un axe (4) perpendiculaire à la direction longitudinale (22), par une première extrémité, sur une partie de structure (2) du bâtiment (1 ) et soli- daire de la nacelle (5) par une seconde extrémité, caractérisé par le fait que la nacelle (5) comporte un arbre (8) de direction sensiblement longitudinale solidaire de la seconde extrémité de la jambe de suspension et d'orientation (3), sur lequel est montée au moins une paire d'hélices contrarotatives (9a, 9b, 10a, 10b), chacune des hélices étant solidaire d'un support de rotor (15) monté rotatif autour de l'arbre (8) de la nacelle (5), portant au moins un élément de rotor (18), placé en vis-à-vis d'au moins un stator (20, 21 ) fixé autour de l'arbre (8) de la nacelle (5) et disposé à l'intérieur du support de rotor (15) qui constitue une partie au moins d'une enveloppe de la nacelle (5).CLAIMS 1.- Propulsion device of a naval vessel (1) in a longitudinal direction (22) of the vessel (1), comprising a nacelle (5) on which is mounted at least one rotary propulsion propeller (14) and at at least one electric motor (13) for driving the propeller (14), and at least one suspension and orientation leg (3) of the nacelle (5) substantially perpendicular to the longitudinal direction (22) of the building, pivotally mounted around an axis (4) perpendicular to the longitudinal direction (22), by a first end, on a structural part (2) of the building (1) and fixed to the nacelle (5) by a second end, characterized in that the nacelle (5) comprises a shaft (8) of substantially longitudinal direction integral with the second end of the suspension and orientation leg (3), on which is mounted at least one pair of counter-rotating propellers (9a, 9b, 10a, 10b), each of the propellers being soli of a rotor support (15) rotatably mounted around the shaft (8) of the nacelle (5), carrying at least one rotor element (18), placed opposite at least one stator (20, 21) fixed around the shaft (8) of the nacelle (5) and arranged inside the rotor support (15) which constitutes at least part of an envelope of the nacelle (5) .
2.- Dispositif de propulsion suivant la revendication 1 , caractérisé par le fait qu'il comporte au moins deux ensembles (9, 10), de deux unités de propulsion (9a, 9b, 10a, 10b) constituant des hélices contrarotatives.2.- propulsion device according to claim 1, characterized in that it comprises at least two sets (9, 10), of two propulsion units (9a, 9b, 10a, 10b) constituting counter-rotating propellers.
3.- Dispositif de propulsion suivant la revendication 2, caractérisé par le fait que chacun des supports de rotor (15) de forme annulaire comporte deux flasques sur les surfaces internes desquels sont fixés des éléments de rotor (18) dans une disposition circonférentielle autour de l'axe (7) du support de rotor disposés en vis-à-vis de deux ensembles d'éléments de stator (21 ).3.- propulsion device according to claim 2, characterized in that each of the rotor supports (15) of annular shape comprises two flanges on the internal surfaces of which are fixed rotor elements (18) in a circumferential arrangement around the axis (7) of the rotor support arranged opposite two sets of stator elements (21).
4.- Dispositif de propulsion suivant l'une quelconque des revendications 1 à 3, caractérisé par le fait que chacun des supports de rotor (15) de forme annulaire est monté sur l'arbre (8) de la nacelle (5), par l'intermédiaire d'au moins un palier de butée (17, 17').4.- propulsion device according to any one of claims 1 to 3, characterized in that each of the rotor supports (15) of annular shape is mounted on the shaft (8) of the nacelle (5), by through at least one thrust bearing (17, 17 ').
5.- Dispositif de propulsion suivant la revendication 4, caractérisé par le fait que le support de rotor (15) comporte une ouverture de passage de fluide (23) dans sa paroi, le moteur électrique (13) étant entièrement noyé dans le liquide dans lequel se déplace le bâtiment naval.5.- propulsion device according to claim 4, characterized in that the rotor support (15) has a passage opening of fluid (23) in its wall, the electric motor (13) being entirely embedded in the liquid in which the naval vessel moves.
6.- Dispositif de propulsion suivant la revendication 5, caractérisé par le fait que le palier unique ou les paliers de butée (17, 17') de montage rota- tif du support de rotor sur l'arbre (8) de la nacelle sont constitués par des paliers de butée hydrodynamiques fonctionnant dans l'eau de mer.6.- Propulsion device according to claim 5, characterized in that the single bearing or the thrust bearings (17, 17 ') for rotary mounting of the rotor support on the shaft (8) of the nacelle are consisting of hydrodynamic thrust bearings operating in seawater.
7.- Dispositif de propulsion suivant l'une quelconque des revendications 1 à 6, caractérisé par le fait que des parties (11 , 12) de l'enveloppe de la nacelle (5) disposées aux extrémités de l'arbre (8) de la nacelle consti- tuent des pièces de profilage de la nacelle. 7.- Propulsion device according to any one of claims 1 to 6, characterized in that parts (11, 12) of the shell of the nacelle (5) disposed at the ends of the shaft (8) of the nacelle constitute parts for profiling the nacelle.
PCT/FR1999/003260 1998-12-30 1999-12-22 Propulsion device for naval vessel WO2000040460A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2000592183A JP2002534316A (en) 1998-12-30 1999-12-22 Equipment to propel a ship
EP99961152A EP1140618A1 (en) 1998-12-30 1999-12-22 Propulsion device for naval vessel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR98/16672 1998-12-30
FR9816672A FR2788032B1 (en) 1998-12-30 1998-12-30 PROPULSION DEVICE FOR A NAVAL VESSEL

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WO2009143669A1 (en) * 2008-05-27 2009-12-03 Tian Yu Aircraft and the power driving system thereof
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JP4753843B2 (en) * 2006-11-21 2011-08-24 中国電力株式会社 Ship
JP5100370B2 (en) 2007-12-28 2012-12-19 川崎重工業株式会社 Thrust generator
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KR101174421B1 (en) * 2010-05-27 2012-08-16 박용헌 Submersible propulsor apparatus
JP5804312B2 (en) * 2011-05-30 2015-11-04 国立研究開発法人海上技術安全研究所 Ship electric propulsion device and ship

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JP2002534316A (en) 2002-10-15
FR2788032B1 (en) 2002-03-22
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EP1140618A1 (en) 2001-10-10

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