Abstract: The balance weight is fixed to the flange of a rotor element by a pre-fixing screw with a conical head engaged into a conical counterbore having a shape complementary to the flange, which places the weight at a very accurate position before permanently fixing it by a clamping stud.

Abstract: A cylindrical calibration head for the drilling of a shaft, includes three flutes arranged evenly around the circumference so that they are spaced one from the next by an angle of 120° with respect to a rotation with respect to the axis of the calibration head, the flutes allowing for the removal of chips and the passage of lubricant during drilling, each of the flutes including a machining insert of which the position in the flute can be adjusted using an adjusting cartridge.

Abstract: The balance weight is fixed to the flange of a rotor element by a pre-fixing screw with a conical head engaged into a conical counterbore having a shape complementary to the flange, which places the weight at a very accurate position before permanently fixing it by a clamping stud.

Abstract: A cylindrical calibration head for the drilling of a shaft, includes three flutes arranged evenly around the circumference so that they are spaced one from the next by an angle of 120° with respect to a rotation with respect to the axis of the calibration head, the flutes allowing for the removal of chips and the passage of lubricant during drilling, each of the flutes including a machining insert of which the position in the flute can be adjusted using an adjusting cartridge.

Abstract: A device for axially retaining blades mounted on a turbomachine rotor disk is disclosed. The device includes a rotor disk having a plurality of slots and a flange extending radially outwards, cooperating with a bearing face of the disk to define a groove that is open radially outwards. The device also includes a plurality of blades, each having a root mounted in a slot of the disk, each blade root having a respective radial bearing face that corresponds to the bearing face of the disk and that has at least one nib extending radially inwards thereover to define a notch that is open radially inwards, and a retaining ring that is mounted against the bearing faces of the disk and of the blade roots. The retaining ring is housed in the groove of the disk, is held outwardly in the notches of the blade roots, and is constituted by a plurality of angular segments placed end to end.

Abstract: An oil separator rotor for a turbomachine, including a tubular hub that includes an external annular flange and an annular cover which, in cross section, is substantially L-shaped and mounted around the hub. The hub flange includes, at its external periphery, a mechanism to radially retain the free end of the cylindrical wall of the cover, so as to center this end and prevent it from deforming in the radially outwards direction under the effect of centrifugal force.

Abstract: The invention relates to a device for cooling the slots of a turbomachine rotor disk, the device comprising a rotor disk having a plurality of slots and a flange that extends upstream from a radially upstream face of the disk. The device also comprises a retaining annulus having a flange that is placed around the flange of the disk, co-operating therewith to provide a space forming a cooling air diffusion cavity, said cavity opening out into the bottom of each of the slots of the disk, and a plurality of air admission orifices opening out into the diffusion cavity at the upstream end thereof, the cavity having means at its downstream end for reducing the flow rate of air penetrating into the slots of the disk that are situated radially in register with air admission orifices.

Abstract: The invention relates to a device for cooling slots in a turbomachine rotor disk, comprising a rotor disk having a plurality of slots and a flange. The device also comprises blades, each having its root mounted in a respective slot, a retaining annulus having one end mounted against the upstream radial face of the disk, and a flange disposed around the flange of the disk and co-operating therewith to define a space forming a cooling air diffusion cavity that opens out into the bottom of each of the slots, together with air admission orifices opening out into the diffusion cavity at the upstream end thereof, the end of the retaining annulus that is mounted against the upstream radial face of the disk including a plurality of openings that open out radially into the bottom of each of the slots in the disk, at the upstream ends thereof.

Abstract: An oil separator rotor for a turbomachine, including a tubular hub that includes an external annular flange and an annular cover which, in cross section, is substantially L-shaped and mounted around the hub. The hub flange includes, at its external periphery, a mechanism to radially retain the free end of the cylindrical wall of the cover, so as to center this end and prevent it from deforming in the radially outwards direction under the effect of centrifugal force.

Abstract: A method of attaching a labyrinth seal support to a turbine engine shaft is disclosed. The method includes inserting axial bolts to secure the labyrinth seal support, the shaft and a device for driving the turbine module with the shaft, and screwing tightening screws in extracting holes, for extracting the drive device with respect to the shaft, provided on the shaft to tighten the labyrinth seal support onto the shaft.

Abstract: The invention relates to a device for cooling the slots of a turbomachine rotor disk, the device comprising a rotor disk having a plurality of slots and a flange that extends upstream from a radially upstream face of the disk. The device also comprises a retaining annulus having a flange that is placed around the flange of the disk, co-operating therewith to provide a space forming a cooling air diffusion cavity, said cavity opening out into the bottom of each of the slots of the disk, and a plurality of air admission orifices opening out into the diffusion cavity at the upstream end thereof, the cavity having means at its downstream end for reducing the flow rate of air penetrating into the slots of the disk that are situated radially in register with air admission orifices.

Abstract: The invention relates to a device for cooling slots in a turbomachine rotor disk, comprising a rotor disk having a plurality of slots and a flange. The device also comprises blades, each having its root mounted in a respective slot, a retaining annulus having one end mounted against the upstream radial face of the disk, and a flange disposed around the flange of the disk and co-operating therewith to define a space forming a cooling air diffusion cavity that opens out into the bottom of each of the slots, together with air admission orifices opening out into the diffusion cavity at the upstream end thereof, the end of the retaining annulus that is mounted against the upstream radial face of the disk including a plurality of openings that open out radially into the bottom of each of the slots in the disk, at the upstream ends thereof.

Abstract: The invention relates to a device for axially retaining blades mounted on a turbomachine rotor disk, the device comprising a rotor disk having a plurality of slots and a flange extending radially outwards, cooperating with a bearing face of the disk to define a groove that is open radially outwards. The device also comprises a plurality of blades, each having a root mounted in a slot of the disk, each blade root having a respective radial bearing face that corresponds to the bearing face of the disk and that has at least one nib extending radially inwards thereover to define a notch that is open radially inwards, and a retaining ring that is mounted against the bearing faces of the disk and of the blade roots, said retaining ring being housed in the groove of the disk, being held outwardly in the notches of the blade roots, and being constituted by a plurality of angular segments placed end to end.

Abstract: A fin produced from thick sheet-metal and having a pattern reproduced in a general direction in accordance with a geometric pitch such that the ratio of the minimum thickness of the sheet-metal to the geometric pitch is greater than 0.2. The fin is obtained either by a hot-extrusion operation or by a material-removing machining operation.

Abstract: The fin according to the invention is produced from thick sheet-metal and has a pattern reproduced in a general direction (D2) in accordance with a geometric pitch (P) such that the ratio of the minimum thickness (e) of the sheet-metal to the geometric pitch (P) is greater than 0.2. The fin is obtained either by a hot-extrusion operation or by a material-removing machining operation.

Abstract: The invention relates to a vaporizer-condensor (4) of the bath type, comprising at least one heat exchange body (13), having a multitude of flat passages (18) for the countercurrent circulation of two fluids in a same direction, and a sealed chamber (14) for confining a fluid containing the or each heat exchange body, the confinement chamber comprising a central section (50) of generally cylindrical shape along a longitudinal axis (Y—Y). The longitudinal axis of the central section of said or each confinement chamber is orthogonal to the direction of countercurrent circulation of the fluids in the flat passages of the corresponding heat exchange body. Use in double column air distillation installations.

Abstract: In this corrugated fin, each corrugation leg (10A, 10B) has a notch (18A, 18B) on at least one edge (11A) and over at least part of its height. Application to brazed-plate heat exchangers.

Abstract: In this corrugated fin, each corrugation leg (10A, 10B) has a notch (18A, 18B) on at least one edge (11A) and over at least part of its height.

Abstract: Input/output chamber for a fluid, for part of a body (1) of an apparatus in which this fluid circulates, this part of the body including a face (3) for inlet or outlet of the said fluid, the chamber (6A) being intended to be connected with a leaktight joint to this face. At least part of the chamber consists of at least one spherical or ellipsoidal portion (20A) and of sectors of cones (22A) tangential to this spherical or ellipsoidal portion.

Abstract: A fluid circulation apparatus comprises a body part (2) in the shape of a dihedron with, on a first face of the dihedron, at least one opening for input/output of this fluid covering over the opening in a leaktight way. The bulb projects with respect to the body part (2) beyond the edge (13) of the dihedron and is produced by combination of metal sheets, of cylindrical, spherical and/or ellipsoidal shape, welded to one another. The apparatus is applicable to the integration of phase separators with heat exchangers of the brazed-plate type or alternatively to the input/output of fluids in such exchangers.