Thermal turbo-machine e.g. gas turbine, has at least two adjacent turbine vanes, and continuous cover band that extends in rear part of vane to smallest cross-section region of maximum plus/minus 3 per cent of chord length

摘要

The thermal turbo-machine has at least two adjacent turbine vanes (11,12) in a hot gas channel. Each turbine vane has a blade with leading (4) and trailing (5) edges, suction and pressure sides, a vane tip and a transverse cover band element in the center of the blade on the tip. The cover band element forms a continuous cover band that extends in the rear part of the vane up to a region (y) of smallest cross-section of maximum plus or minus 3 per cent of the chord length (x).