STEERING CROWN FOR A GAS TURBINE WITH AN INTERNAL RING, AN EXTERNAL RING, ONE OF WHICH IS SEPARATELY AND LIKELY TO BE MOVED SEPARATELY

摘要

A nozzle vane assembly for a gas turbine exhibits a number of circumferentially spaced vanes connected to a shroud. A second, concentric shroud is arranged separately and urged axially against the unrestrained ends of the vanes through a spring loaded clamping device. This arrangement serves to alleviate thermal stresses and thermal fatigue in the vane assembly.