| 摘要 |
<p>An axial flow turbine comprising solids of revolution (109, 112, 102, 118) and stationary parts (103, 101, 111), wherein the internal downstream side of a balance hole (120), which is formed in a rotor disc (112) constituting part of the solids of revolution and is parallel with the direction of a revolution axis (100), is provided with a guiding channel member (130) in which a plurality of guiding channels, which are inclined in the direction opposite to that which the solids of revolution revolve, are formed from the upstream side toward the downstream side of the balance hole. The tangential velocity of leakage flow passing between the solids of revolution and the stationary parts can thereby be reduced, and unstable vibration of the solids of revolution can be effectively suppressed.</p> |
