| 摘要 |
<p>Disclosed are a turbine and turbine rotor blade that can improve performance while ensuring turbine rotor blade strength. Said turbine is provided with: a rotor blade (4) that rotates around a rotation axis (C) inside a main flow channel (2) in a casing (3); a stator vane (5) disposed inside the casing (3); a tip shroud (42) disposed on the radially outside tip of the rotor blade (4), the length of said tip shroud along the rotation axis (C) decreasing with increasing separation from the rotor blade (4); and a cavity section (32) formed inside the casing (3) at a position opposite the rotor blade (4). The tip shroud (42) fits inside the cavity section. The angle of inclination (0b) of the inner surface of the tip shroud (42) is larger than the angle of inclination of the inner surface of the casing (3), which is also the average angle of inclination (¸a) from the trailing edge of the stator vane (5), which is disposed upstream with respect to the main flow, to the cavity section (32), which is disposed downstream with respect to the main flow.</p> |
