Patent application number | Description | Published |
20090297331 | TURBOMACHINE CASING INCLUDING A DEVICE FOR PREVENTING INSTABILITY DURING CONTACT BETWEEN THE CASING AND THE ROTOR - The invention relates to a cylindrical casing for a turbomachine that is suitable for receiving a rotor fitted with at least one bladed wheel, the casing including a device for preventing instability during contact between the casing and the bladed wheel. In characteristic manner, said device comprises a succession of elements disposed around the circumference of the casing, and presenting between two adjacent elements, different stiffnesses, the number of elements having the same stiffness not being equal to a multiple of the wave number of the vibratory mode of the bladed wheel that is to be inhibited. The invention is applicable to a compressor, a turbine, or a fan. | 12-03-2009 |
20110033283 | TURBOMACHINE ROTOR COMPRISING AN ANTI-WEAR PLUG, AND ANTI-WEAR PLUG - A turbomachine rotor including a disc including a rim and axial slots machined in the rim for the individual housing of blades, a ring being attached to one face of the rim, the ring being pierced with holes in the axial continuation of the slots, at least some of the holes in the continuation of the slots including a plug. The plug includes a first half-plug made of a first wear-resistant material and a second half-plug made of a second material, one of the two half-plugs bearing on one side of the ring and the other bearing on the other side of the ring and being connected to one another through the hole. The plug is configured to form an anti-wear device. | 02-10-2011 |
20110091310 | THERMOMECHANICAL PART CONSTITUTING A BODY OF REVOLUTION ABOUT A LONGITUDINAL AXIS AND INCLUDING AT LEAST ONE ABRADABLE RING FOR A SEALING LABYRINTH - The invention relates to a turbomachine thermomechanical part forming a body of revolution about a longitudinal axis, and including at least one abradable ring for a labyrinth seal. In characteristic manner, the abradable ring is made up of angular sectors that present different stiffnesses between adjacent pairs of sectors. The invention is applicable to a compressor, a turbine, or to a rotor and stator assembly. | 04-21-2011 |