AXIAL-FLOW FLUID MACHINE, AND VARIABLE STATIONARY-BLADE DRIVING DEVICE THEREFOR

摘要

This variable stationary-blade driving device (30) is provided with an annular movable ring (31) disposed on the outer circumferential side of the casing (20) of an axial-flow compressor, four ring support mechanisms (40) disposed at an interval in the circumferential direction of the movable ring and for supporting the movable ring such that same can rotate around a rotor, and a link mechanism (70) for linking the movable ring with a variable stationary blade such that the orientation of the variable stationary blade changes with the rotation of the movable ring. The ring support mechanisms (40) each have an inner roller (41i), an outer roller (41o), and a roller support base (43) for supporting the inner roller and the outer roller in a rotatable manner while the inner roller and the outer roller sandwich the movable ring.