EP1401705B1 - Ship pod-mounted hydrojet propeller unit driven by a hollow electric motor - Google Patents
Ship pod-mounted hydrojet propeller unit driven by a hollow electric motor Download PDFInfo
- Publication number
- EP1401705B1 EP1401705B1 EP02740856A EP02740856A EP1401705B1 EP 1401705 B1 EP1401705 B1 EP 1401705B1 EP 02740856 A EP02740856 A EP 02740856A EP 02740856 A EP02740856 A EP 02740856A EP 1401705 B1 EP1401705 B1 EP 1401705B1
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- European Patent Office
- Prior art keywords
- ship
- hydrojet
- pod
- electrical motor
- propulsion
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- 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.)
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Classifications
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
- B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
- B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/08—Propulsion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
- B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
- B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
- B63H2011/081—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type with axial flow, i.e. the axis of rotation being parallel to the flow direction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
- B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
- B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
- B63H2011/084—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type with two or more pump stages
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- 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
- B63H2023/005—Transmitting power from propulsion power plant to propulsive elements using a drive acting on the periphery of a rotating propulsive element, e.g. on a dented circumferential ring on a propeller, or a propeller acting as rotor of an electric motor
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- 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
Definitions
- the invention relates to the field of propulsion of ships, submersible and unsinkable, by means of submerged thrusters, outside the shell, for example under or next to the shell of a submersible vessel, such as a boat, or any which side of the hull of a submarine. It relates to more particularly such a propulsion unit by hydrojet, driven by an electric motor.
- propulsion In the field of ship propulsion, submersible or unsinkable, it is known to use several propulsion techniques using fully submerged propulsion pods. Among these, we quote propulsion by hydraulic jets, commonly called “hydrojet”. Such a technique is illustrated by the French patent application of the same filing this application and published under number 2 766 262. This technique uses the principle of the reaction, the water being sucked up by a water intake placed in front of the nacelle. A high efficiency pump, placed inside the latter, communicates energy to the water to propel it outside under the shape of a jet, through a nozzle, thus creating a thrust that propels the ship. Such a gondola can be oriented in azimuth, the direction of propulsion can be chosen by the rotation of said nacelle.
- a such a gondola can also be oriented around a horizontal axis to allow the plate to be changed or the depth of a submarine.
- the object of the invention is to propose a third type of submerged and placed naval thruster in a basket, avoiding the drawbacks associated with these two types of propellants.
- the motor rotor is placed around the hydraulic screw.
- the electric motor can be of two types, a first which is of the field type radial, the motor being of large external diameter, the second being of the axial field type, and being likewise inner diameter, but of greater length.
- Figure 1 shows the propellant according to the invention, equipped with an electric field motor axial, i.e. with a rather elongated shape around axis 1 of the propellant.
- Inside a nacelle 2 is therefore mounted rotating a shaft 3, by means 4V and 4R hydraulic thrust bearings, mounted respectively in a part before 2V and a part rear 2R of nacelle 2.
- nacelle 2 Around the latter is fixed a screw hydraulic 7. On leaving the latter, the shape internal of nacelle 2 widens to form a channel rounded O-ring around the rear part 2R of the nacelle 2.
- the hydraulic circuit of the thruster ends with a nozzle 10 fixed to the nacelle 2.
- the electric motor is of the type immersed in water and is placed axially around the screw hydraulic 7.
- the stator 11S is integral with the nacelle 2, while the rotor 11R is fixed around the hydraulic screw 7 and is therefore integrated on the assembly propulsion turn.
- 11S stator and 11R rotor are jacketed.
- the motor can be either synchronous or asynchronous.
- 4V and 4R thrust bearings are of the type hydraulic, more precisely they are supplied with permanently by water in which the nacelle, under pressure.
- FIG. 2 represents the propellant according to the invention in an embodiment using an engine of the radial type, i.e. the electric field is radial. Consequently, its outside diameter is a little more important than that of the axial motor used in the embodiment described in FIG. 1. On the other hand, its length is shorter.
- Basket 12 is similar to basket 2 of Figure 1 and the rotating propulsion assembly is almost identical.
- the screw, the vanes 8 of the pump helical-axial, the rectifiers 9 and the nozzle 10, are identical. It is the same for tree 3 of the rotating propulsion assembly which is also rotatably mounted, by 4V and 4R thrust bearings in respective front 12V and rear 12R parts of the basket 12.
- the motor therefore includes a shaped rotor 21R discoid fixed around the hydraulic screw 17. It is placed between the two parts 21S of the stator which are fixed relative to the nacelle 12.
- hydrojet propulsion technique Several advantages are inherent in the hydrojet propulsion technique. Indeed, at equal power, a propeller propeller rotates approximately at 150 rpm, while a hydrojet thruster turns at around 600 revolutions / minute. The size of motors being inversely proportional to speed of rotation, the motor, used in a technique hydrojet, is much more compact than the one used to drive a propeller.
- hydraulic thrust bearings allows not to use ball bearings. This strengthens impact resistance, especially impact military.
- the propulsion by hydrojet presents many benefits.
- the type of pump, the speed, the causes it to be force-fed with a hydraulic screw and the water flow takes place in a confined channel are as many advantages compared to the propeller which turns in open environment and at low frequency. It is the same for the use of hydraulic thrust bearings, in replacement of noisy ball bearings.
- the propellant according to the invention does not require no ventilation, lubrication or cooling.
- the reverse thrust is done as on conventional hydrojets with a deflector concave, operated by a jack.
- the efficiency of a helical-axial pump, used in the propellant according to the invention, associated to a hydraulic screw which feeds the pump inlet helical-axial, is around 75%. So we can consider a 10% increase in yield overall propulsion compared to a propeller Traditional.
- propulsion by hydrojet and in particular by double hydrojet, can be harmoniously integrated into water lines and into the shapes of the ship's hull. In this case, it therefore finds much less cantilevered than a propellant propeller, detached from the hull of the ship in a nacelle mounted at the end of a mast. Hydraulic drag and tactical vulnerability is found considerably reduced.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Jet Pumps And Other Pumps (AREA)
- Hydraulic Turbines (AREA)
- Catching Or Destruction (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Nozzles (AREA)
- Hydraulic Motors (AREA)
Abstract
Description
L'invention concerne le domaine de la propulsion des navires, submersibles et insubmersibles, au moyen de propulseurs immergés, à l'extérieur de la coque, par exemple sous ou à côté de la coque d'un navire submersible, tel qu'un bateau, ou de n'importe quel côté de la coque d'un sous-marin. Elle concerne plus particulièrement une telle unité de propulsion par hydrojet, entraínée par un moteur électrique.The invention relates to the field of propulsion of ships, submersible and unsinkable, by means of submerged thrusters, outside the shell, for example under or next to the shell of a submersible vessel, such as a boat, or any which side of the hull of a submarine. It relates to more particularly such a propulsion unit by hydrojet, driven by an electric motor.
Dans le domaine de la propulsion des navires, submersibles ou insubmersibles, il est connu d'utiliser plusieurs techniques de propulsion mettant en oeuvre des nacelles de propulsion complètement immergées. Parmi celles-ci, on cite la propulsion par jets hydrauliques, appelée communément « hydrojet ». Une telle technique est illustrée par la demande de brevet français du même déposant de la présente demande et publiée sous le numéro 2 766 262. Cette technique utilise le principe de la réaction, l'eau étant aspirée par une prise d'eau placée devant la nacelle. Une pompe à haut rendement, placée à l'intérieur de cette dernière, communique de l'énergie à l'eau pour la propulser à l'extérieur sous la forme d'un jet, par une tuyère, créant ainsi une poussée qui propulse le navire. Une telle nacelle pouvant être orientée en azimut, la direction de propulsion peut être choisie par la rotation de ladite nacelle. Ce type de propulseur permet donc à un navire d'effectuer n'importe quelle manoeuvre au port, de se stabiliser en route ou de faire du positionnement dynamique, sans utilisation d'un autre mécanisme. Une telle nacelle peut également être orientée autour d'un axe horizontal pour permettre de changer l'assiette ou la profondeur d'un sous-marin.In the field of ship propulsion, submersible or unsinkable, it is known to use several propulsion techniques using fully submerged propulsion pods. Among these, we quote propulsion by hydraulic jets, commonly called "hydrojet". Such a technique is illustrated by the French patent application of the same filing this application and published under number 2 766 262. This technique uses the principle of the reaction, the water being sucked up by a water intake placed in front of the nacelle. A high efficiency pump, placed inside the latter, communicates energy to the water to propel it outside under the shape of a jet, through a nozzle, thus creating a thrust that propels the ship. Such a gondola can be oriented in azimuth, the direction of propulsion can be chosen by the rotation of said nacelle. This type of propellant therefore allows a ship carry out any maneuver at the port, stabilize en route or do positioning dynamic, without using any other mechanism. A such a gondola can also be oriented around a horizontal axis to allow the plate to be changed or the depth of a submarine.
D'autre part, dans un deuxième type de propulsion par nacelle immergée, on peut également citer la demande de brevet français du même déposant, publié sous le numéro 2 768 119, qui décrit un propulseur naval à hélice centrale et moteur asynchrone discoïde. Un tel propulseur est constitué principalement d'un moyeu central entouré des aubes d'une hélice autour desquelles est fixé le rotor électrique de forme discoïde et un fourreau portant des paliers. Le stator est placé de part et d'autre du rotor électrique, autour des paliers. En d'autres termes, le moteur électrique entoure la canalisation à l'intérieur de laquelle se trouve l'hélice et dans laquelle passe le flux d'eau. Toutefois, ce type de propulseur ne présente pas un excellent rendement, est très bruyant et soumis aux problèmes de la cavitation.On the other hand, in a second type of propulsion by submerged pod, you can also cite the same applicant's French patent application, published under number 2 768 119, which describes a naval thruster with central propeller and asynchronous motor discoid. Such a propellant is constituted mainly from a central hub surrounded by blades a propeller around which the rotor is fixed electric discoid shape and a sheath carrying bearings. The stator is placed on either side of the electric rotor, around the bearings. In others terms, the electric motor surrounds the pipeline to the interior of which is the propeller and in which passes the water flow. However, this type of propellant does not perform very well, is very noisy and subject to cavitation problems.
Le but de l'invention est de proposer un troisième type de propulseur naval immergé et placé dans une nacelle, en évitant les inconvénients liés à ces deux types de propulseurs. The object of the invention is to propose a third type of submerged and placed naval thruster in a basket, avoiding the drawbacks associated with these two types of propellants.
L'objet principal de l'invention est donc un propulseur de navire, en nacelle, utilisant à la fois la technique de l'hydrojet et la propulsion par un moteur électrique creux, c'est-à-dire entourant les éléments hydrauliques propulseurs et le flux d'eau propulsé. Il comprend principalement une nacelle à l'intérieur de laquelle se trouvent les éléments suivants :
- un moteur électrique ;
- un ensemble tournant de propulsion entraíné par le moteur électrique ;
- une tuyère de sortie, fixée à l'arrière de la nacelle, en aval de l'ensemble tournant de propulsion ; et
- des redresseurs fixés à la nacelle.
- an electric motor;
- a rotating propulsion unit driven by the electric motor;
- an outlet nozzle, fixed to the rear of the nacelle, downstream of the rotating propulsion assembly; and
- rectifiers attached to the nacelle.
Le propulseur se caractérise selon l'invention en ce que l'ensemble tournant de propulsion est de type hydrojet, et est constitué de :
- une vis hydraulique ; et
- une pompe hélico-axiale placée en aval et solidaire de la vis hydraulique ; et
- a hydraulic screw; and
- a helical-axial pump placed downstream and integral with the hydraulic screw; and
Dans la réalisation préférentielle de l'invention, le rotor du moteur est placé autour de la vis hydraulique.In the preferential realization of the invention, the motor rotor is placed around the hydraulic screw.
Pour faire pénétrer l'eau à l'intérieur de la nacelle et en particulier en amont de la vis hydraulique, il est prévu d'utiliser des ouïes d'entrée placées latéralement.To make the water penetrate inside the nacelle and in particular upstream of the screw hydraulic, it is planned to use inlet vents placed laterally.
Dans la principale réalisation mécanique de l'ensemble tournant de propulsion, celui-ci est monté sur un arbre monté lui-même tournant dans la nacelle par des paliers et butées hydrauliques.In the main mechanical realization of the rotating propulsion assembly, this is mounted on a tree mounted itself rotating in the nacelle by bearings and hydraulic stops.
Selon l'invention, le moteur électrique peut être de deux types, un premier qui est du type à champ radial, le moteur étant de large diamètre extérieur, le deuxième étant de type à champ axial, et étant de même diamètre intérieur, mais de plus grande longueur.According to the invention, the electric motor can be of two types, a first which is of the field type radial, the motor being of large external diameter, the second being of the axial field type, and being likewise inner diameter, but of greater length.
L'invention et ses différentes caractéristiques techniques seront mieux comprises à la lecture de la description suivante, donnée à titre d'exemple, et illustrée de deux figures représentant respectivement :
- figure 1, en coupe, une première réalisation du propulseur selon l'invention, équipé d'un moteur électrique axial ; et
- figure 2, en coupe, une deuxième réalisation du propulseur selon l'invention, équipé d'un moteur électrique radial.
- Figure 1, in section, a first embodiment of the propellant according to the invention, equipped with an axial electric motor; and
- Figure 2, in section, a second embodiment of the propellant according to the invention, equipped with a radial electric motor.
La figure 1 représente le propulseur selon
l'invention, équipé d'un moteur électrique à champ
axial, c'est-à-dire avec une forme plutôt allongée
autour de l'axe 1 du propulseur. A l'intérieur d'une
nacelle 2 est donc monté tournant un arbre 3, au moyen
de paliers-butées hydrauliques 4V et 4R, montés
respectivement dans une partie avant 2V et une partie
arrière 2R de la nacelle 2. Au niveau de l'extrémité
avant 3V de l'arbre 3, c'est-à-dire en aval de la
partie avant 2V de la nacelle 2, se trouve une chambre
d'entrée 5 équipée de plusieurs ouïes 6 placées
latéralement par rapport à l'axe 1 du propulseur. L'eau
est donc aspirée par ces ouïes 6 pour pénétrer à
l'entrée d'un ensemble tournant de propulsion supporté
par l'arbre 3.Figure 1 shows the propellant according to
the invention, equipped with an electric field motor
axial, i.e. with a rather elongated shape
around axis 1 of the propellant. Inside a
nacelle 2 is therefore mounted rotating a shaft 3, by
Autour de ce dernier est fixée une vis
hydraulique 7. A la sortie de cette dernière, la forme
interne de la nacelle 2 s'élargit pour former un canal
torique bombé autour de la partie arrière 2R de la
nacelle 2. Dans la première partie qui s'évase du canal
bombé, se trouvent les aubes 8 d'une pompe
hélico-axiale, solidaire de l'arbre 3. Elles sont
suivies, dans la deuxième partie qui se ressert du
canal bombé, par des redresseurs 9 fixés à la nacelle
2. Le circuit hydraulique du propulseur se termine par
une tuyère 10 fixée à la nacelle 2.Around the latter is fixed a screw
hydraulic 7. On leaving the latter, the shape
internal of nacelle 2 widens to form a channel
rounded O-ring around the
Le moteur électrique est du type immergé dans
l'eau et est placé axialement autour de la vis
hydraulique 7. Le stator 11S est solidaire de la
nacelle 2, tandis que le rotor 11R est fixé autour de
la vis hydraulique 7 et est donc intégré sur l'ensemble
tournant de propulsion. Le stator 11S et le rotor 11R
sont chemisés. Le moteur peut être soit synchrone, soit
asynchrone.The electric motor is of the type immersed in
water and is placed axially around the screw
hydraulic 7. The
Les paliers-butées 4V et 4R sont du type hydraulique, plus précisément ils sont alimentés en permanence par de l'eau dans laquelle se trouve la nacelle, sous pression.4V and 4R thrust bearings are of the type hydraulic, more precisely they are supplied with permanently by water in which the nacelle, under pressure.
La figure 2 représente le propulseur selon l'invention dans une réalisation utilisant un moteur du type radial, c'est-à-dire que le champ électrique est radial. En conséquence, son diamètre extérieur est un peu plus important que celui du moteur axial utilisé dans la réalisation décrite à la figure 1. Par contre, sa longueur est plus courte.FIG. 2 represents the propellant according to the invention in an embodiment using an engine of the radial type, i.e. the electric field is radial. Consequently, its outside diameter is a little more important than that of the axial motor used in the embodiment described in FIG. 1. On the other hand, its length is shorter.
La nacelle 12 s'apparente à la nacelle 2 de
la figure 1 et l'ensemble tournant de propulsion est
quasiment identique. La vis, les aubes 8 de la pompe
hélico-axiale, les redresseurs 9 et la tuyère 10, sont
identiques. Il en est de même pour l'arbre 3 de
l'ensemble tournant de propulsion qui est également
monté tournant, par des paliers-butées 4V et 4R dans
des parties respectives avant 12V et arrière 12R de la
nacelle 12. Basket 12 is similar to basket 2 of
Figure 1 and the rotating propulsion assembly is
almost identical. The screw, the
Par contre, le début du parcours hydraulique
est un peu différent en ce sens que la chambre d'entrée
15 est un peu plus allongée, des ouïes 16 étant
toutefois également placées latéralement.However, the start of the hydraulic journey
is a little bit different in that the
Le moteur comprend donc un rotor 21R de forme
discoïde fixé autour de la vis hydraulique 17. Il est
placé entre les deux parties 21S du stator qui sont
fixes par rapport à la nacelle 12.The motor therefore includes a shaped
Plusieurs avantages sont inhérents à la technique de propulsion par hydrojet. En effet, à puissance égale, un propulseur à hélice tourne environ à 150 tours/minute, tandis qu'un propulseur à hydrojet tourne environ à 600 tours/minute. La taille des moteurs étant inversement proportionnelle à la vitesse de rotation, le moteur, utilisé dans une technique hydrojet, est beaucoup plus compact que celui utilisé pour entraíner une hélice.Several advantages are inherent in the hydrojet propulsion technique. Indeed, at equal power, a propeller propeller rotates approximately at 150 rpm, while a hydrojet thruster turns at around 600 revolutions / minute. The size of motors being inversely proportional to speed of rotation, the motor, used in a technique hydrojet, is much more compact than the one used to drive a propeller.
Il est avantageux de coupler sur une même nacelle deux propulseurs, c'est-à-dire deux ensembles hydrojets. En effet, cela permet d'annuler le couple de torsions sur le système d'orientation de la nacelle si les deux groupes travaillent, l'un en rotation dextrogyre, et l'autre en rotation sénestrogyre, les deux couples s'annulant.It is advantageous to couple on the same nacelle two propellants, i.e. two sets waterjets. Indeed, this makes it possible to cancel the couple of twists on the nacelle orientation system if the two groups are working, one in rotation dextrorotatory, and the other in senestrogyrous rotation, the two couples canceling each other.
A grande vitesse, les propulseurs à hélice ont tendance à subir de la cavitation. Ce phénomène provoque du bruit et des risques d'endommagements au niveau des pales, contrairement au système de propulsion par hydrojet, qui ne cavite pas.At high speed, propeller thrusters tend to experience cavitation. This phenomenon causes noise and risk of damage to the blade level, unlike the propulsion by hydrojet, which does not cavitate.
L'utilisation de paliers-butées hydrauliques permet de ne pas utiliser de roulements à billes. Ceci renforce la résistance aux chocs, notamment aux chocs militaires.The use of hydraulic thrust bearings allows not to use ball bearings. This strengthens impact resistance, especially impact military.
Du point de vue de la discrétion acoustique, la propulsion par hydrojet présente de nombreux avantages. En effet, le type de pompe, la vitesse, le fait qu'elle soit gavée par une vis hydraulique et que l'écoulement de l'eau se fasse en canal confiné sont autant d'avantages par rapport à l'hélice qui tourne en milieu ouvert et à basse fréquence. Il en est de même pour l'utilisation de paliers-butées hydrauliques, en remplacement de roulements à billes de nature bruyante.From the point of view of acoustic discretion, the propulsion by hydrojet presents many benefits. In fact, the type of pump, the speed, the causes it to be force-fed with a hydraulic screw and the water flow takes place in a confined channel are as many advantages compared to the propeller which turns in open environment and at low frequency. It is the same for the use of hydraulic thrust bearings, in replacement of noisy ball bearings.
Le propulseur selon l'invention ne nécessite pas d'auxiliaire de ventilation, de lubrification ou de refroidissement. L'inversion de poussée se fait comme sur les hydrojets classiques avec un déflecteur concave, manoeuvré par un vérin.The propellant according to the invention does not require no ventilation, lubrication or cooling. The reverse thrust is done as on conventional hydrojets with a deflector concave, operated by a jack.
Le rendement d'une pompe hélico-axiale, utilisée dans le propulseur selon l'invention, associée à une vis hydraulique qui gave l'entrée de la pompe hélico-axiale, est de l'ordre de 75 %. On peut donc envisager une augmentation de 10 % sur le rendement global de propulsion par rapport à une hélice traditionnelle.The efficiency of a helical-axial pump, used in the propellant according to the invention, associated to a hydraulic screw which feeds the pump inlet helical-axial, is around 75%. So we can consider a 10% increase in yield overall propulsion compared to a propeller Traditional.
L'utilisation de la propulsion par hydrojet, et en particulier par double hydrojet, peut être intégrée harmonieusement dans les lignes d'eau et dans les formes de la carène du navire. Dans ce cas, elle se trouve donc bien moins en porte-à-faux qu'un propulseur à hélice, détaché de la coque du navire dans une nacelle monté en bout d'un mât. La traínée hydraulique et la vulnérabilité tactique s'en trouvent considérablement réduite.The use of propulsion by hydrojet, and in particular by double hydrojet, can be harmoniously integrated into water lines and into the shapes of the ship's hull. In this case, it therefore finds much less cantilevered than a propellant propeller, detached from the hull of the ship in a nacelle mounted at the end of a mast. Hydraulic drag and tactical vulnerability is found considerably reduced.
Il est possible d'utiliser quatre propulseurs selon l'invention sur une même plate-forme orientable, cette solution favorise une intégration dans la carène.Four thrusters can be used according to the invention on the same steerable platform, this solution promotes integration into the hull.
Claims (6)
- A ship's engine arranged in a pod and utilizing an electrical motor, comprising:a pod (2, 12);an electrical motor (11R, 11S, 21R, 21S) arranged in the pod;a rotating engine assembly (16, 17, 8, 9) driven by the rotor of the electrical motor, andan outlet nozzle (10), fixed to the rear of the pod (2, 12), downstream of the rotating engine assembly, andguide vanes (9) fixed to the pod (2, 12),a hydraulic screw (7, 17) anda helico-axial pump (8) placed downstream and integral with the hydraulic screw (7, 17) and
- The ship's engine according to claim 1, characterized in that the rotor (11R, 11S) is placed around the hydraulic screw (7, 17).
- The ship's engine according to claim 1, characterized in that it comprises lateral intakes (6, 16) for entry of the water into the rotating engine assembly.
- The ship's engine according to claim 1, characterized in that the rotating engine assembly is mounted on a shaft (3) mounted rotationally in the pod (12) by means of hydraulic thrust bearings (4V, 4R).
- The ship's engine according to claim 1, characterized in that the electrical motor (11R, 11S) is of the axial field type.
- The ship's engine according to claim 1, characterized in that the electrical motor (21R, 21S) is of the radial field type.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0107371 | 2001-06-06 | ||
FR0107371A FR2825679B1 (en) | 2001-06-06 | 2001-06-06 | HYDROJET NACELLE SHIP PROPELLER DRIVEN BY A HOLLOW ELECTRIC MOTOR |
PCT/FR2002/001875 WO2002098731A1 (en) | 2001-06-06 | 2002-06-04 | Ship pod-mounted hydrojet propeller unit driven by a hollow electric motor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1401705A1 EP1401705A1 (en) | 2004-03-31 |
EP1401705B1 true EP1401705B1 (en) | 2004-10-06 |
Family
ID=8863993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02740856A Expired - Lifetime EP1401705B1 (en) | 2001-06-06 | 2002-06-04 | Ship pod-mounted hydrojet propeller unit driven by a hollow electric motor |
Country Status (10)
Country | Link |
---|---|
US (1) | US20040203298A1 (en) |
EP (1) | EP1401705B1 (en) |
JP (1) | JP2004533363A (en) |
AT (1) | ATE278606T1 (en) |
BR (1) | BR0210065A (en) |
CA (1) | CA2449123A1 (en) |
DE (1) | DE60201541D1 (en) |
FR (1) | FR2825679B1 (en) |
NO (1) | NO20035445D0 (en) |
WO (1) | WO2002098731A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101830278B (en) * | 2010-05-13 | 2012-01-11 | 中国农业大学 | Serial axial-flow water jet propulsion pump |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1029389C2 (en) * | 2005-06-30 | 2007-01-04 | Marifin Beheer B V | Ashless screw. |
ITMI20060633A1 (en) * | 2006-03-31 | 2007-10-01 | Flavio Novelli | AUGER ELECTRIC TRACTION SYSTEM |
CN102486169B (en) * | 2009-12-12 | 2015-06-03 | 赵明 | High-efficiency axial flow and screw combined pump for ship |
CN102336262A (en) * | 2010-11-02 | 2012-02-01 | 唐瑞 | Stud screw impeller propelling device matched with sailing power accelerating device |
NL2008948C2 (en) | 2012-06-06 | 2013-12-09 | G A M Manshanden Man B V | SHIP SCREW. |
US9217435B2 (en) | 2012-10-23 | 2015-12-22 | Nidec Motor Corporation | Axial flow pump with integrated motor |
US10201155B2 (en) * | 2013-03-15 | 2019-02-12 | Troller Pro, Inc. | Mechanized trolling device |
CN103921921B (en) * | 2014-04-07 | 2017-08-25 | 深圳市云洲创新科技有限公司 | Pod propulsion full circle swinging pump sprays vector propeller |
EP2949574B1 (en) * | 2014-05-30 | 2018-07-11 | ABB Schweiz AG | Pod propulsion unit of a ship |
DE102015000259B4 (en) * | 2015-01-16 | 2016-12-29 | Cayago Gmbh | Swimming and diving aid |
CN105822598B (en) * | 2016-04-29 | 2019-01-22 | 合肥中科根云设备管理有限公司 | A kind of adjustable water jet propulsion pump of operating condition |
KR101825849B1 (en) * | 2016-12-15 | 2018-02-07 | 서문식 | Ship Ballast and Propulsion System that Using Ballastwater Flow Based on Axleless Motor |
KR102590604B1 (en) * | 2018-11-15 | 2023-10-16 | 한화오션 주식회사 | Propulsion motor of underwater moving body and the underwater moving body having the same |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1711045A (en) * | 1927-05-05 | 1929-04-30 | Davis Fred | Well-casing pump |
US3143972A (en) * | 1963-02-06 | 1964-08-11 | Watt V Smith | Axial flow unit |
US3939794A (en) * | 1969-02-17 | 1976-02-24 | Hull Francis R | Marine pump-jet propulsion system |
JPH06298181A (en) * | 1993-04-08 | 1994-10-25 | Yamaha Motor Co Ltd | Water jet propulsion device |
US5490768A (en) * | 1993-12-09 | 1996-02-13 | Westinghouse Electric Corporation | Water jet propulsor powered by an integral canned electric motor |
FR2766262B1 (en) | 1997-07-16 | 1999-09-17 | Soc D Const De Materiel Metall | CONTAINER IN WHICH CAN BE RELEASED AT A SELECTED MOMENT OF FRIGORIES OR CALORIES |
FR2768119B1 (en) | 1997-09-08 | 1999-11-12 | Technicatome | NAVAL PROPELLER WITH CENTRAL PROPELLER AND DISCOID ASYNCHRONOUS MOTOR |
US6200176B1 (en) * | 1998-07-17 | 2001-03-13 | Donald I. Bowers | Marine jet drive pump preloader for reducing cavitation |
-
2001
- 2001-06-06 FR FR0107371A patent/FR2825679B1/en not_active Expired - Fee Related
-
2002
- 2002-06-04 CA CA002449123A patent/CA2449123A1/en not_active Abandoned
- 2002-06-04 AT AT02740856T patent/ATE278606T1/en not_active IP Right Cessation
- 2002-06-04 DE DE60201541T patent/DE60201541D1/en not_active Expired - Lifetime
- 2002-06-04 EP EP02740856A patent/EP1401705B1/en not_active Expired - Lifetime
- 2002-06-04 WO PCT/FR2002/001875 patent/WO2002098731A1/en active IP Right Grant
- 2002-06-04 BR BR0210065-7A patent/BR0210065A/en not_active Application Discontinuation
- 2002-06-04 JP JP2003501740A patent/JP2004533363A/en active Pending
- 2002-06-06 US US10/480,491 patent/US20040203298A1/en not_active Abandoned
-
2003
- 2003-12-05 NO NO20035445A patent/NO20035445D0/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101830278B (en) * | 2010-05-13 | 2012-01-11 | 中国农业大学 | Serial axial-flow water jet propulsion pump |
Also Published As
Publication number | Publication date |
---|---|
CA2449123A1 (en) | 2002-12-12 |
FR2825679A1 (en) | 2002-12-13 |
JP2004533363A (en) | 2004-11-04 |
FR2825679B1 (en) | 2003-09-19 |
NO20035445D0 (en) | 2003-12-05 |
DE60201541D1 (en) | 2004-11-11 |
US20040203298A1 (en) | 2004-10-14 |
BR0210065A (en) | 2004-12-21 |
EP1401705A1 (en) | 2004-03-31 |
ATE278606T1 (en) | 2004-10-15 |
WO2002098731A1 (en) | 2002-12-12 |
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