TURBINE WHEEL OF AXIAL TURBOMACHINE Russian patent published in 2003 - IPC

FIELD: gas turbine and engine plants. SUBSTANCE: invention relates to gas turbine and engine plants using in first stage of turbines working blades made of ceramic materials at wall temperature app. 1900K and peripheral velocities (on outer radius of blades) app. 400 m/s. Proposed turbine wheel of axial turbomachine has disk, working blades with beads on inner radius, whose cross-section lines are arranged at angle to radius in direction of turbine wheel rotation. It has also ring shroud made integral with working blades. Beads of working blades form inner cylindrical (seat) surface being arranged with continuous butt-joining to each other tangential position covering the disk and provided with radial and axial projections from sides of leading and trailing edges, respectively. Disk has outer cylindrical (seat) surface mating at interference fit with inner surface of blade beads and radial and axial slots from opposite sides into which radial and axial projections of blade beads enter forming two-sided engagement with disk in tangential direction. EFFECT: improved reliability of turbine wheel. 3 cl, 9 dwg