초록 ▼

A multifunctional labyrinth seal support disk for a turbojet engine rotor is disclosed which also serves to axially lock the rotor blades onto the rotor wheel. A radial support disk has a generally conical, labyrinth seal means extending from the disk in an upstream direction and a conical collar ex

A multifunctional labyrinth seal support disk for a turbojet engine rotor is disclosed which also serves to axially lock the rotor blades onto the rotor wheel. A radial support disk has a generally conical, labyrinth seal means extending from the disk in an upstream direction and a conical collar extending from the disk in a downstream direction. The collar has a generally annular bearing surface which bears against an upstream side of the rotor blade roots. Several blade-retaining teeth extend from the collar in a downstream direction and are dimensioned so as to fit within axial grooves between the blade root and the rotor blade wheel. Radially extending spurs bear against the downstream portion of the rotor blade root to axially lock the rotor blade onto the disk. An attaching ring is interposed between the blade retaining teeth and the rotor blade wheel so as to axially lock the multifunctional disk with respect to the rotor blade wheel.

대표청구항 ▼

In a turbine structure having at least one rotor wheel rotatable about an axis, a peripheral portion of the rotor wheel defining a plurality of axial grooves and a plurality of rotor blades having blade roots attached to the rotor wheel in the axial grooves, the improvements comprising: (a) a radial

In a turbine structure having at least one rotor wheel rotatable about an axis, a peripheral portion of the rotor wheel defining a plurality of axial grooves and a plurality of rotor blades having blade roots attached to the rotor wheel in the axial grooves, the improvements comprising: (a) a radial support disk having: (i) labyrinth seal means extending from the disk in an upstream direction; (ii) a conical collar extending from the disk in a downstream direction, the collar defining a generally annular bearing surface adapted to contact an upstream side of the blade roots; and, (iii) a plurality of blade-retaining teeth extending in a downstream direction from the conical collar, the number of teeth being equal to the number of axial grooves, each of the teeth defining a radially outwardly extending spur adapted to contact a downstream side of the blade roots; and, (b) attachment means attaching the blade retaining teeth to the rotor wheel so as to prevent relative axial movement between the support disk and the rotor wheel.