Abrégé

To recover the axial forces transmitted by a rotating shaft (12), the bearing assembly (8) of the invention includes a plurality of distributed bearing units (30). Each bearing unit (30) comprises: a stationary base (70); a resilient member (50) having a stationary portion and a portion that is completely movable in a main direction (X50) of the forces to be supported; and a bearing surface that defines, together with the shaft (12), a water film. The bearing surface is connected to the movable portion. The minimum radius (R31) of the bearing surface is between 1 m and 3 m. The resilient member (50) and the base (70) define at least one water chamber. A plurality of ducts are arranged so as to connect the chambers together, thereby defining a closed circuit.

Classes IPC  ?

• F03B 11/06 - Disposition des paliers
• F16C 17/04 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges axiales uniquement
• F16C 17/14 - Paliers à contact lisse pour mouvement de rotation exclusivement caractérisés par des particularités sans rapport avec la direction de la charge spécialement adaptés au fonctionnement dans l'eau

Abrégé

The invention relates to an air-cooled generator, through which cooling air flows in order to dissipate lost heat, wherein the cooling air flows across interfaces (23) acting as cooling surfaces and in the process takes up the heat from said interfaces (23). With minimal cooling air usage, the heat transfer is maximized by providing the interfaces (23) with spatially distributed local elevations (24) which enlarge the cooling surface and the heat transmission coefficient. In particular, local elevations in the form of pyramid-shaped or truncated pyramid-shaped bodies (24, 26, 29) are preferred.

Classes IPC  ?

• H02K 1/24 - Noyaux rotoriques à pôles saillants
• H02K 1/32 - Parties tournantes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement
• H02K 3/24 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p. ex. avec des conducteurs en barre avec des canaux ou des conduits pour un agent de refroidissement entre les conducteurs
• H02K 9/02 - Dispositions de refroidissement ou de ventilation par l'air ambiant s'écoulant à travers la machine

Abrégé

This Francis turbine runner comprises a crown, a band, and several vanes (26i) distributed about an axis of rotation (X2) of the runner. The vanes (26i) are not symmetric with respect to the axis of rotation (X2) and have a distribution about this axis (X2) which is not periodic and even.

Classes IPC  ?

• F03B 3/12 - AubesRotors portant les aubes
• F03B 11/04 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes pour diminuer la cavitation ou les vibrations, p. ex. équilibrage

Abrégé

This method for protecting a component of a hydraulic machine against erosion comprises steps involving preparing, in the flat state, several sheets (300) of polymerized synthetic material, in applying a coat of adhesive (200) to one side of each sheet (300), and in lying (F1) the sheets (300) on the surface of the component that is to be covered with the layer of coating.

Classes IPC  ?

• F03B 11/00 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes

Abrégé

The present invention relates to a pad-type thrust bearing (1) in which each pad (104) rests on a volume of liquid enclosed in a cavity (V4) connected to adjacent cavities by ducts (6). The thrust bearing (1) comprises a number of convex casings (4) each on its own delimiting a cavity (V4) and which are connected to one another by ducts (6). The convex casings (4) and the ducts (6) together form a hollow functional subassembly (2) which is separate from the other constituent components of the thrust bearing (1) and which delimits a liquid-filled closed volume (V2). According to the invention, each casing (4) comprises two half-shells positioned one on each side of a flexible bladder and each duct (6) comprises a flexible hose inserted in a sheath.

Classes IPC  ?

• F16C 17/06 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges axiales uniquement avec segments supportés obliquement, p. ex. paliers Michell
• F16C 41/02 - Dispositions pour répartir également la charge sur plusieurs paliers ou sur les éléments de paliers
• F16C 23/04 - Paliers à contact lisse à autoréglage

Abrégé

The invention relates to a rotating electric machine, in particular a double-fed asynchronous machine with a power range of 20 MVA - 500 MVA. Said machine comprises a rotor, which can be rotated about a shaft and is concentrically surrounded by a stator, and a hollow cylindrical rotor sheet body that has a layered sheet stack consisting of a plurality of sheet metal segments (27) in the form of ring segments, to which a uniform pressure is applied by a press plate. Said segments are braced by bolts that run in an axial direction through the rotor sheet body. The sheet stack engages with a concentric central body of the rotor by means of grooves (29) running axially along the inner radius (31) of the rotor sheet body (15). In order to obtain a mechanical coupling for a machine of this type that does not adversely affect the cooling system, each of the grooves (29) is formed by pairs of ribs (30) that are located on the inner radius (31) of the sheet metal segments (27) and are separated by the width of the groove, said ribs being oriented radially inwards.

Classes IPC  ?

• H02K 1/30 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor utilisant des pièces intermédiaires, p. ex. des croisillons
• H02K 1/26 - Noyaux rotoriques à encoches pour enroulements

Abrégé

A wet-mateable electrical connector comprises a vertically movable female connector unit 52 locatable over a vertically fixed male connector unit 50. The female connector unit 52 defines a chamber 62 containing a gas to exclude water and the like therefrom and having a closed upper end and an open lower end for receiving an upper end of the male connector unit 50. An insulating sheath 6 is locatable within the upper end of the female connector unit 52 to move it from a first position that protects a first electrical contactor 4 provided on the upper end of the male connector unit 50 to a second position that exposes the first electrical contactor 4. The upper end of the female connector unit 52 houses a second electrical contactor 3 which is engageable with the first electrical contactor 4 upon movement of the insulating sheath 6 from the first position to the second position.

Classes IPC  ?

• H01R 13/523 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes pour l'emploi sous l'eau

Abrégé

The invention relates to a rotating electric machine, in particular a double-fed asynchronous machine with a power range of 20 MVA - 500 MVA. Said machine comprises a rotor, which can be rotated about a shaft and is concentrically surrounded by a stator, and a rotor sheet body that has a layered sheet stack consisting of a plurality of sheet metal segments (27) in the form of ring segments. Said segments are braced by bolts that run in an axial direction through the rotor sheet body. In order to improve a machine of this type, means (29, 30) are provided for the positive connection of neighbouring sheet metal segments (27), said means allowing tangential forces to be transmitted between neighbouring sheet metal segments (27) that lie on one plane.

Classes IPC  ?

• H02K 1/26 - Noyaux rotoriques à encoches pour enroulements

Abrégé

The invention relates to a rotating electrical machine (26), which comprises a rotor (19) which is mounted such that it can rotate about a machine shaft (18) and is surrounded concentrically by a stator (10), which has a stator winding (13) which is embedded in slots (12) of a stator laminate stack (11). Effective damping is achieved by virtue of the fact that an open stator damper winding (15) is provided so as to reduce unbalanced magnetic forces in the stator (10).

Classes IPC  ?

• H02K 3/16 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p. ex. avec des conducteurs en barre disposés dans des encoches assurant des rôles auxiliaires, p. ex. un effet d'amortissement ou de commutation

Abrégé

The invention relates to a rotating electric machine (10), especially synchronous permanent magnet machine, comprising a rotor (11) with a given number (Nr) of magnets (23) distributed along the circumference and a given number (pr) of rotor pole pairs, and further comprising a stator (12) with a given number (ps) of stator pole pairs and a given number (Ns) of stator slots (21). The efficiency and the power of the machine are improved by making the number (ps) of stator pole pairs independent of the number (pr) of rotor pole pairs.

Classes IPC  ?

• H02K 21/12 - Moteurs synchrones à aimants permanentsGénératrices synchrones à aimants permanents avec des induits fixes et des aimants tournants

Abrégé

The present invention relates to a synchronous generator (10), especially for wind turbines, comprising a rotor (11), which rotates around a machine axis (28) and is concentrically surrounded by a stator (19) with a stator winding (20), whereby a plurality of permanent magnets (16) and pole pieces (17) is alternating arranged at the rim of the rotor (11) with the permanent magnets (16) being oriented in an essentially tangential direction. The torque and power characteristic of the generator are improved by alternating pole pieces (17) and pairs of permanent magnets (16), whereby the permanent magnets (16) each have a rectangular cross section in the axial direction, the pole pieces (17) each have a symmetric trapezoidal cross section in the axial direction with the symmetry plane of the trapezoid going through the machine axis (28) and the larger of the parallel sides lying outside, and the two permanent magnets (16) of each pair of permanent magnets are separated from each other by means of an intermediate wedge (15), which corresponds with its cross section to the trapezoidal pole pieces (17).

Classes IPC  ?

• H02K 1/27 - Noyaux rotoriques à aimants permanents
• H02K 1/30 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor utilisant des pièces intermédiaires, p. ex. des croisillons

Abrégé

A rotating electric machine (10) comprises a rotor rotating around an axis and a stator (11) concentrically surrounding the rotor, whereby stator (11) is built up from a plurality of packages (P1, P2) of laminations and comprises a plurality of axial slots (12) distributed along the inner circumference of the stator (11) for receiving a stator winding, and whereby cooling means (13, 14) are provided within the stator (11) for removing heat from the stator (11) by a flow of cooling air flowing through said stator (11). The cooling efficiency and stator design are improved by providing radial and axial channels (13, 14) for the cooling air at the slots (12) by combining packages (P1, P2) of laminations (15, 16) with different shapes (S1, S2) of the slot cut-outs.

Classes IPC  ?

• H02K 1/20 - Parties fixes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement

Abrégé

A rotating electric machine (10), especially multi-phase synchronous generator, comprises a rotor (11) rotating around an axis, and a stator (12) concentrically surrounding said rotor (11), said stator (12) being equipped with a stator winding (16), which comprises a plurality of coils, characterised in that each of said coils is wound in a series of adjacent single coils around a respective series of adjacent teeth (14) distributed along the inner circumference of a laminated stator core (13) and extending in axial direction, whereby all single coils of each coil are wound in an uninterrupted fashion with one continuous cable (17).

Classes IPC  ?

• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 15/04 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques d'enroulements avant leur montage dans les machines

Abrégé

The invention relates to a device (1), which controls the movement of a ring gate (2) of a hydraulic machine between an open position and a blockage position. The device (1) includes at least four cylinders (11, 12, 21, 22, 31, 32), the rods (11.3, 12.3) of which are suitable for being connected to the ring gate (2) at locations located on a perimeter (C2) of the ring gate (2). The device (1) also includes at least two hydraulic members (10.1, 20.1, 30.1) for synchronising pistons (11.4, 12.4), the hydraulic synchronisation members (10.1, 20.1, 30.1) being connected to the cylinders (11, 12, 21, 22, 31, 32) such as to form at least two groups (10, 20, 30). Each group (10, 20, 30) encompasses at least two cylinders (11-12, 21-22, 31-32) connected by at least one hydraulic synchronisation member (10.1, 20.1, 30.1), two cylinders (11, 21, 31, 12, 22, 32) belonging to two separate groups (10, 20, 30) not being connected by a hydraulic synchronisation member (10.1, 20.1, 30.1).

Classes IPC  ?

• F03B 3/18 - Aubes de statorsAubes distributrices, p. ex. réglables
• F15B 11/22 - Synchronisation du mouvement de plusieurs servomoteurs

Abrégé

The invention relates to a leaf (1) for a mitre gate, which includes: a skin plate (2) intended for withstanding a pressure (P) exerted by a liquid; and at least two uprights (4, 6) respectively located on either side (24, 26) of the skin plate (2), the uprights (4, 6) being secured to the skin plate (2). The skin plate (2) is in the overall shape of a cylinder portion (C2), the longitudinal axis of the cylinder (C2) being essentially parallel to the uprights (4, 6). Each upright (4, 6) extends overall according to a generatrix (Z24) of the cylinder (C2). Each upright (4, 6) includes at least one bearing element (40, 60), arranged to project relative to the skin plate (2) and each bearing element (40, 60) includes a bearing surface, for supporting the bearing element (40, 60) against a lock wall or another leaf of the mitre gate. The bearing surface of each bearing element (40, 60) is aligned with a plane (P4, P6) that is tangential to the skin plate (2).

Classes IPC  ?

• E02B 7/20 - Barrages mobilesPortes d'écluse
• E02B 7/40 - Vannes basculantes ou tournantes

Abrégé

A foundation structure (10) for locating an object (14) mounted on the foundation structure (10) on a sea bed or a river bed comprises an integral buoyancy device (22) having variable buoyancy and a rigid control surface (23). The integral buoyancy device (22) is movable relative to the foundation structure (10) to vary the position of the rigid control surface (23) and to control the position of the centre of buoyancy relative to the position of the centre of gravity. This stabilises the foundation structure 10 during submergence and surfacing. A method for controlling the deployment and retrieval of the foundation structure (10) is also described.

Classes IPC  ?

• E02D 23/12 - Fonçage incliné
• E02D 27/52 - Fondations submergées
• E02D 23/02 - Caissons susceptibles d'être déplacés par flottaison sur l'eau et d'être coulés sur place
• E02D 27/06 - Fondations sous forme de caissons flottants
• E02D 15/08 - Enfoncement d'ouvrages dans l'eau ou dans le sol
• E02B 17/02 - Iles artificielles montées sur pilotis ou supports similaires, p. ex. plates-formes sur pieds extensiblesProcédés de construction de celles-ci mises en place par abaissement de la structure de support jusqu'à toucher le fond, p. ex. en la fixant ensuite sur celui-ci

Abrégé

Said dispensing assembly (1), for a Pelton turbine wheel (R), includes a dispensing pipe (20), having the shape of a torus portion, and a plurality of injection pipes (31-35) that are distributed around the site of the wheel (R) so as to inject water into the buckets. Each injection pipe (31-35) is connected to the dispensing pipe (20). The dispensing assembly (1) comprises at least one auxiliary pipe (310-340, 350) that includes an outlet (340.2, 350.2), connected to the inner portion of an injection pipe (31-35), and an inlet (340.1, 350.1), directly connected to the dispensing pipe (20) upstream from said corresponding injection pipe (31-35), between the inlet of said injection pipe (31-35) and the inlet (340.1, 350.1) of the preceding injection pipe (31-35) in the water flow direction.

Classes IPC  ?

• F03B 1/04 - TuyèresOrganes portant les tuyères
• F03B 11/00 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes

Abrégé

The invention relates to a collector ring arrangement (30) for a rotating electrical machine, said collector ring arrangement (30) comprising a plurality of collector rings (18) disposed concentric to the machine axis and one after the other in the axial direction. A simplified, weight-saving construction suitable for particularly effective cooling is achieved in that the collector ring arrangement (30) is implemented as self-supporting.

Classes IPC  ?

• H02K 13/00 - Association structurelle de collecteurs de courant et de moteurs ou de génératrices, p. ex. plaques de montage des balais ou connexions avec les enroulementsAgencement des collecteurs de courant dans les moteurs ou les génératricesDispositions pour améliorer la commutation
• H02K 9/28 - Refroidissement des collecteurs, des bagues collectrices ou des balais, p. ex. par ventilation

Abrégé

The invention relates to an electric machine (10) in a performance range of several MVA, particularly an asynchronous machine, wherein said electric machine (10) comprises a rotor rotating about an axis with a rotor winding which is arranged in a rotor sheet metal body and comprises in each case an exposed winding head (16) outside the rotor sheet metal body. Said winding head is provided with a winding head restraint system (29) for absorbing the centrifugal forces which occur during operation, said winding head restraint system comprising a plurality of radially acting retaining elements (20, 21). The safety of the machine is increased in that the retaining elements (20, 21) are provided with securing means (22, 23) which secure the retaining elements (20, 21) against unintended release and/or from flying away in the event of a fracture.

Classes IPC  ?

• H02K 3/51 - Fixation des têtes de bobines, des connexions équipotentielles ou des connexions s'y raccordant appropriée uniquement aux rotors

Abrégé

The invention relates to a rotating electric machine, particularly a double-fed asynchronous machine in the performance range between 20 and 500 MVA, comprising a rotor which rotates about an axis and is concentrically surrounded by a stator. According to the invention, said rotor comprises a rotor sheet metal body (14) which is composed of metal sheets which are layered and pressed together in the axial direction using a pressing plate (19) to form a composite, said rotor sheet metal body being divided in the radial direction into an inner mechanical region (14b) and an outer electric region (14a). A rotor winding (18) is accommodated in the electric region (14a). Said electric machine is characterized in that the axial tensioning of the rotor sheet metal body is optimized in that the pressing plate (19) is radially divided into a separate inner pressing plate and a separate outer pressing plate, corresponding to the radial division of the rotor sheet metal body (14).

Classes IPC  ?

• H02K 1/28 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor

Abrégé

The invention relates to an electric machine (10) in a performance range of several MVA, particularly an asynchronous or synchronous machine, wherein said electric machine (10) comprises a rotor (19) rotating about an axis (18) with a rotor sheet metal body (12) which is concentrically enclosed by a stator sheet metal body (14) of a stator and is separated thereof by an annular air gap (21). In order to ensure a flawless operation, means (23), which extend through said air gap in the axial direction, are provided for monitoring the air gap (21) and by means of which a change of the geometry of the rotor and/or the penetration of foreign bodies into the air gap (21) can be detected.

Classes IPC  ?

• H02K 11/00 - Association structurelle de machines dynamo-électriques à des organes électriques ou à des dispositifs de blindage, de surveillance ou de protection

Abrégé

The invention relates to a rotating electric machine, in particular a double-fed asynchronous machine in the performance range between 20 and 500 MVA, comprising a rotor which rotates about an axis and is concentrically surrounded by a stator. According to the invention, said rotor comprises a rotor sheet metal body (14) which is composed of metal sheets which are layered and pressed together in the axial direction to form a composite, said rotor sheet metal body being divided in the radial direction into an inner mechanical region (14b) and an outer electric region (14a). A rotor winding (18) is accommodated in the electric region (14a). Said electric machine is characterized in that the axial tensioning of the rotor sheet metal body is optimized in that the rotor sheet metal body (14) is pressed, in the mechanical region (14b), by means of shear pins (22) which pass through the rotor sheet metal body (14) in the axial direction and, in the electric region (14a), by means of additional pins (21).

Classes IPC  ?

• H02K 1/28 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor

Abrégé

The invention relates to a unit comprising a hydraulic turbine (1), a duct (5) leading a forced flow of water to the turbine, a duct (8) discharging the outgoing flow from the turbine and vanes (20) for guiding the flow through the discharge duct. Each guide vane (20) is able to rotate about an axis (x22) secant to the wall (84) of the discharge duct. Means (30) are provided for controlling the angular position of the vane (20) about its axis of rotation (x22). Each guide vane (20) can also be retracted into the wall (84) of the discharge duct (8), and means (21) are provided for adjusting the extent to which they are withdrawn into the wall.

Classes IPC  ?

• F03B 3/18 - Aubes de statorsAubes distributrices, p. ex. réglables
• F03B 11/00 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes

Abrégé

The invention relates to a facility for converting water power into mechanical or electrical energy, including at least one hydraulic turbine, a water reservoir (R), and a pipe (5) for supplying the turbine with water (E) from the water reservoir. The facility also includes a device (200) submerged in the water reservoir and suitable for imposing an ascending movement on a water flow (E0) moving in the water reservoir (R) towards the opening (51) of the supply pipe (5), and a gas-collecting means (400), arranged above a portion (V200) of the device (200) in which the ascending movement of the water flow (E0) takes place.

Classes IPC  ?

• B01D 19/00 - Dégazage de liquides

Abrégé

The invention relates to a ring (120) that is intended for being mounted tightly around a shaft of a hydraulic machine to form a portion of a hydrostatic or hydrodynamic bearing. The ring includes at least one first section (122), at least one second section (124) and means (132) for mounting the first and second sections around the shaft. Each section (122, 124) includes two edge surfaces (1223, 1243) connecting the external (1221, 1241) and internal (1222, 1242) radial surfaces thereof. The first section (122) is provided with at least one threaded hole (127) accessible via an edge surface (1223) and capable of receiving a screw (132) projecting from an edge surface (1243) of the second section (124). The screw (132) is provided, on the portion of the shank (134) thereof that projects from the second section (124), with at least one raised pattern (140) for rotatably moving the shank (134) in order to screw or unscrew the shank in the threaded hole (127). The screw (132) is provided with a piston (130) sliding in a recess (128) arranged in the second section (124), connecting to the edge surface (1243) of the second section and isolated from the outside by a bearing (136). The second section (124) is provided with means for supplying pressurised fluid to a chamber (C1) with variable volume arranged between the piston (130) and the bearing (136), inside the recess (128).

Classes IPC  ?

• F16B 31/04 - Assemblages à vis spécialement modifiés en vue de résister à une charge de tractionBoulons de rupture maintenant constante la charge de traction
• F16B 35/06 - Têtes de forme particulière
• F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
• F16C 17/14 - Paliers à contact lisse pour mouvement de rotation exclusivement caractérisés par des particularités sans rapport avec la direction de la charge spécialement adaptés au fonctionnement dans l'eau
• F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air
• F16C 33/04 - CoussinetsBaguesGarnitures antifriction
• F04D 29/047 - Paliers hydrostatiquesPaliers hydrodynamiques

Abrégé

The present invention relates to a Francis runner for a hydraulic machine that comprises a belt with a rotational symmetry about a central axis of the runner, a ceiling with a rotational symmetry about the axis, and a plurality of blades (21, 22) extending between the ceiling and the belt. The runner also includes at least two elements (41, 42, 43, 61, 62, 63) partially defining at least the belt and/or the ceiling while at least one edge (231, 232, 241, 242) of a blade (21, 22) is inserted between the two elements defining the belt and/or the ceiling.

Classes IPC  ?

• F03B 3/12 - AubesRotors portant les aubes

Abrégé

This hydraulic machine comprises a wheel supported by a shaft (5), the wheel and the shaft being able to rotate about a vertical axis (X5) while a radial hydrostatic or hydrodynamic bearing (100) is formed between, on the one hand, a radial peripheral surface (52) of the shaft and, on the other hand, an internal radial surface (102) of a member (101) that is fixed relative to the vertical axis. The bearing (100) extends between two edges (121, 122) which, in normal operation, constitute regions for the removal of a film of water formed in the bearing. At least one cavity (130) is created in the fixed member (101) and opens onto its internal radial surface (102) near a first edge (122) of the bearing. The machine comprises means (131, 132, 133) for placing the cavity (130) in fluidic communication with a volume (V1) situated outside the bearing near the second edge (121) of the bearing (100). That allows some (E2) of the film of water from the bearing (100) to be removed towards the second edge (121) if the bearing becomes obstructed near the first edge (122).

Classes IPC  ?

• F03B 11/06 - Disposition des paliers
• F04D 29/047 - Paliers hydrostatiquesPaliers hydrodynamiques

Abrégé

This member (4) can be attached to the crown (12) of a wheel (1) of a hydraulic machine. It is provided with a skirt (42) of which a surface (421) is able to be arranged in the continuation of a wet surface (121) of the crown. This member is equipped with at least one fin (43) arranged radially inside the skirt (42) and projecting axially (h) from the skirt (42) in the downward direction.

Classes IPC  ?

• F03B 3/02 - "Machines" ou machines motrices du type "à réaction"Parties constitutives ou détails particuliers les concernant à écoulement radial du côté haute pression et écoulement axial du côté basse pression des rotors, p. ex. turbines Francis
• F03B 11/04 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes pour diminuer la cavitation ou les vibrations, p. ex. équilibrage

Abrégé

This wheel comprises a plurality of vanes (2) arranged on a crown (3) and is equipped with a tip-forming member (10) attached to a central region (32) of the crown or hub of the wheel (1), radially inside the vanes (2), the crown defining a wet surface (31) for guiding a flow (E) passing between the vanes. The tip-forming member (10) is provided with at least one opening (121) for diverting a fraction (E1) of the flow towards the internal volume (V10) of this member. This member comprises a frustoconical annular skirt (11) and at least one fin (15) arranged in its internal volume (V10) and able to modify the path of the flow fraction (E1) entering this volume through the opening (121). This fin (15) extends as far as the edge (112) of the skirt (11) which defines an outlet opening (14) of the member (10) for the flow fraction (E1).

Classes IPC  ?

• F03B 3/02 - "Machines" ou machines motrices du type "à réaction"Parties constitutives ou détails particuliers les concernant à écoulement radial du côté haute pression et écoulement axial du côté basse pression des rotors, p. ex. turbines Francis
• F03B 11/04 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes pour diminuer la cavitation ou les vibrations, p. ex. équilibrage

Abrégé

The invention relates to a wheel (R) of the Francis type that comprises a ring (1) with revolution symmetry about the rotation axis (Z) of the wheel (R), and curved blades (21, 22) connected to the ring (1) and each having an outer peripheral edge (212, 222) and an inner central edge (211, 221). The connection points (B21, B22) between the ring (1) and the inner central edges (211, 221) of the blades (21, 22) are located on a same circle (C20) centred on the axis (Z). The connection points (A21, A22) between the ring (1) and the outer peripheral edges (212, 222) of the blades (21, 22) are located on at least two distinct circles (C21, C22) (D21, D22) centred on the axis (Z).

Classes IPC  ?

• F01D 5/04 - Organes de support des aubes, p. ex. rotors pour "machines" ou machines à flux radial
• F03B 3/12 - AubesRotors portant les aubes

Abrégé

This hydraulic machine (1) comprises a wheel (2) which is able to rotate with respect to a fixed structure (9) and about a fixed axis of rotation (X2), a forced flow (E) of water being intended to flow through this wheel (2). A hydrostatic bearing (100), which is formed between, firstly, an element (111) coupled in rotation to the wheel (2) and, secondly, a part (91) of the fixed structure (9), is arranged between a first region (Z1) of the machine, which is in fluid communication with the forced flow (E) and in which, during operation, there prevails a pressure similar to that of the forced flow, and a second region (Z2) of the machine, which is isolated from the forced flow by this bearing.

Classes IPC  ?

• F03B 11/00 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes
• F03B 11/06 - Disposition des paliers
• F03B 3/02 - "Machines" ou machines motrices du type "à réaction"Parties constitutives ou détails particuliers les concernant à écoulement radial du côté haute pression et écoulement axial du côté basse pression des rotors, p. ex. turbines Francis
• F03B 13/00 - Adaptations des "machines" ou machines motrices pour une utilisation particulièreCombinaisons des "machines" ou machines motrices avec les appareils entraînés ou qu'ils entraînentCentrales électriques ou ensembles machine-appareil

Abrégé

This hydraulic machine comprises an impeller (2) able to rotate with respect to a fixed structure (9) and about a fixed axis, this impeller being intended to have passing through it a forced flow of water. At least one device (100) for limiting water leaks is positioned between the impeller (2) and the fixed structure (9), this device defining an operating clearance (J) between the impeller and the fixed structure. This leak limiting device (100) comprises at least one member (103) that can be deformed and/or moved, while the impeller (2) is rotating, in a radial direction (F1) with respect to the axis of rotation of the impeller.

Classes IPC  ?

• F03B 11/00 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes
• F03B 3/02 - "Machines" ou machines motrices du type "à réaction"Parties constitutives ou détails particuliers les concernant à écoulement radial du côté haute pression et écoulement axial du côté basse pression des rotors, p. ex. turbines Francis
• F03B 13/00 - Adaptations des "machines" ou machines motrices pour une utilisation particulièreCombinaisons des "machines" ou machines motrices avec les appareils entraînés ou qu'ils entraînentCentrales électriques ou ensembles machine-appareil

Abrégé

The invention relates to a hydraulic machine that comprises a mobile wheel (2) capable of rotation relative to a fixed structure (9, 92, 93) and having a forced water flow (E) flowing therethrough. A chamber (Ci) is defined both by the wheel (2) and the fixed structure (9). The chamber (Ci) is insulated from the flow (E) passing through the wheel (2) by a first seal (J1) provided between the wheel (2) and the fixed structure (9) in the vicinity of a first portion (231) of the wheel (2). A second seal (J2) is advantageously provided between the wheel (2) and the fixed structure (9) in the vicinity of a second portion (232) of the wheel (2). The machine may also include means (95, 96) for filling the chamber (Ci) with pressurised air.

Classes IPC  ?

• F03B 11/00 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes

Abrégé

The invention relates to a hydraulic plant (I) that defines a path (4, 5, 6) for a forced water flow (E), and comprises at least one machine (1) of the turbine, pump or turbine-pump type, a member (8) provided with at least one deformable wall (81) and defining at least one closed volume (V8) with variable dimensions. The plant also includes means (9, 91) for supplying (Fg) the closed volume with a pressurised fluid. The member with a deformable wall (81) is mounted in a hydraulic duct (6) located downstream from a rotary portion (2) of the machine (1). The deformable wall defines, locally and downstream from the rotary portion (2), a modular section (S63) for the flow (E) passage in the hydraulic duct (6). According to the method of the invention, a pressurised fluid is injected (F9) into a closed volume having variable dimensions (V8) and defined by a member (8) provided in a hydraulic duct (6) located downstream from the rotary portion (2), in order to modulate the passage section (S63).

Classes IPC  ?

• F03B 3/06 - "Machines" ou machines motrices du type "à réaction"Parties constitutives ou détails particuliers les concernant à écoulement à travers les rotors essentiellement axial, p. ex. turbopropulseurs à aubes réglables, p. ex. turbines Kaplan
• F03B 3/14 - Rotors à aubes réglables
• F03B 3/18 - Aubes de statorsAubes distributrices, p. ex. réglables
• F03B 15/04 - Commande par variation de l'écoulement du liquide dans les turbines
• F03B 11/00 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes

Abrégé

The invention relates to a Pelton turbine that comprises a plurality of sub-assemblies arranged about the rotation axis of the wheel and each including a bucket (111) and an anchoring leg (112). At least one blocking pin (13) is provided in a direction (X13) parallel to the rotation axis (X1) of the wheel between two adjacent anchoring legs (112, 112'), wherein said pin is inserted into two housings (1126, 1127) respectively formed in the two anchoring legs (112, 112'). According to the method of the invention, the blocking pin (13) is placed by inserting the same into the two housings (1126, 1127) of two adjacent anchoring legs (112, 112'). The pins are placed into the housings with a clearance, thereby allowing the relative sliding of the anchoring legs (112, 112') before blocking them with the pins (13).

Classes IPC  ?

• F03B 1/02 - AugetsRotors portant les augets

Abrégé

The invention relates to a machine through which a main flow (E) of water passes, including a turbine wheel (4), with at least a turbulent zone, reduced-pressure zone or cavitation zone (8, 10, 33) being formed close to said wheel. The wheel includes blades (6) disposed between a ceiling (28) and a belt (30). The machine also includes means for injecting a flow (E2) drawn from the main flow into the aforementioned zone (8, 10, 33) such as to alter the main flow (E) locally or increase the pressure in said zone (8, 10, 33). Said injection means inject the drawn flow (E2) from the ceiling (28) or from the belt (30) through holes (31, 32) provided in the ceiling (28) or belt (30).

Classes IPC  ?

• F03B 11/04 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes pour diminuer la cavitation ou les vibrations, p. ex. équilibrage
• F03B 11/00 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes
• F03B 3/12 - AubesRotors portant les aubes
• F03B 1/04 - TuyèresOrganes portant les tuyères

Abrégé

The invention relates to a hydraulic machine through which a main flow (E) of water passes, including at least one turbine blade profile (1) having an upstream end (8) and a downstream end (10), with at least a turbulent zone, reduced-pressure zone or cavitation zone (14) being formed close to said downstream end. The machine also includes means for injecting a flow (E1, E2) drawn from the main flow into the aforementioned zone (14). The injection means include a channel (16) for drawing said flow (E1, E2) from the main flow (E) and discharging same at the downstream end (10) substantially in the direction of the main flow (E).

Classes IPC  ?

• F03B 11/04 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes pour diminuer la cavitation ou les vibrations, p. ex. équilibrage
• F03B 11/00 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes
• F03B 3/12 - AubesRotors portant les aubes
• F03B 1/04 - TuyèresOrganes portant les tuyères

Abrégé

The invention relates to a Pelton machine through which a main flow (E) of water passes, including at least one Pelton turbine (54) manifold (56), with at least a turbulent zone or a reduced-pressure zone (64) being formed close to said manifold. The machine also includes means for injecting a flow (E4) drawn from the main flow, and unaltered in relation to the main flow (E), into the turbulent or reduced-pressure zone (64) such as to alter the main flow (E) locally or increase the pressure in said zone (64).

Classes IPC  ?

• F03B 11/04 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes pour diminuer la cavitation ou les vibrations, p. ex. équilibrage
• F03B 11/00 - Parties constitutives ou détails non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes
• F03B 3/12 - AubesRotors portant les aubes
• F03B 1/04 - TuyèresOrganes portant les tuyères