Turbomachine rotor arrangement
AssigneeSnecma Moteurs
InventorsMichel Gilbert Roland Brault, Laurent Luc Arnaud Palmisano
Life of this patent
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Abstract
In a succession of rotor disks, only the end disks are connected to a main structure by bolted extensions and the intermediate disks are suspended from rigid spacer pieces by centering and anti-rotation connections. The end disks are interconnected to clamp the assembly in the axial direction. There is no bolted connection between the successive disks. Assembly is very easy. The disks and the spacer pieces are stacked together in alternately, and the assembly is torsionally very rigid because of the use of a high number of claw-coupling teeth formed by protruding ends of the blade roots forming teeth that engage in spacer piece end rims.
Claims21
A rotor arrangement comprising a succession of disks carrying blades and joined by spacer pieces, wherein two of the disks, at opposite ends of the succession, are provided with extensions, wherein the extensions are tapered to meet at joined flanges, wherein said succession comprises at least one intermediary disk between said two disks, said at least one intermediary disk being suspended from at least one of said spacer pieces.
A rotor arrangement comprising a succession of disks carrying blades and joined by spacer pieces, wherein two of the disks, at opposite ends of the succession, are provided with extensions, the extensions are tapered to meet at joined flanges, each disk is provided with axially spaced annular ledges, the spacer pieces comprise axially spaced annular rims, each rim engaging an associated ledge, the disks and the rims comprise co-operating arrays of claw-coupling teeth and recesses for receiving said teeth and extending around the rims, and the rims of each spacer piece extend one radially inwardly and the other radially outwardly.
A rotor arrangement comprising a succession of disks carrying blades and joined by spacer pieces, wherein two of the disks, at opposite ends of the succession, are provided with extensions, the extensions are tapered to meet at joined flanges, each disk being provided with axially spaced annular ledges, the spacer pieces comprise axially spaced annular rims, each rim engaging an associated ledge, the disks and the rims comprise co-operating arrays of claw-coupling teeth and recesses for receiving said teeth and extending around the rims, blade roots are engaged in individual slots in the disks and pass through the disks, the teeth being formed by ends of the blade roots protruding from the slots, the rims on the spacer pieces extend radially inwardly, a shell ring extends between each adjacent pair of rings, concentric with the associated spacer piece, and each shell ring and the associated spacer piece form a ventilation chamber into which the slots of the associated disks open.
Dependencies are inferred from the claim text.