Turbine blade for turbo machine, has annular space between free end of liner and internal edge of vane to define leak zone for cool air where internal edge has cavity to create load loss in zone to reduce flow of cool air

摘要

The blade has multi-perforated liner (18) defining an annular cavity (20) between an outer wall of the liner and an inner wall of a vane (10). An air admission opening (24) supplies cool air to interior of the liner. An annular space between free end of the liner and internal edge of the vane defines a leak zone for the cool air. The internal edge has a cavity to create load loss in the zone to reduce flow of cool air. An independent claim is also included for a turbine with blades.