| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a rotary machine in which a leak flow rate can be further reduced.SOLUTION: A steam turbine 1A in which fluid flows along an axial line, includes: a tip shroud 51 of a moving blade 50 provided in a shaft body extending around the axial line; a diaphragm outer ring 11 provided opposite to the tip shroud 51 in a radial direction and in a casing arranged relatively rotatably around the axial line with respect to the tip shroud 51; a seal fin 15 extending from the diaphragm outer ring 11 to a radial-direction inside and forming a fine gap H between the tip shroud 51 and itself; and a steam introduction face 70a which is formed downstream from the seal fin 15, is arranged in a cavity C in which a main vortex Y1 based on a leak flow passing the fine gap H is generated so as to be opposite to the seal fin 15 and introduces a flow that is based on the main vortex Y1 to the fine gap H.</p> |
