| 摘要 |
<p>A seal apparatus for rotary machines, adapted to prevent the abrasion and a decrease in thickness of a seal plate, which are ascribed to the self-excited vibration of the seal plate, and the occurence of imperfect sealing due to these inconveniences by fixing the seal plate to a turbine disc reliably with a large fixing force and thereby reducing the self-excited vibration of the seal plate. In a rotary machine provided with a seal apparatus having in grooves (1a) formed in a rotated disc (1) a seal plate (2) for sealing a fluid between a fluid passage (12) on the outer circumferential side of the grooves (1a) and a fluid passage (14) on the inner circumferential side thereof, the seal plate (2) is divided into a plurality of parts in the circumferential direction thereof and inserted into the grooves (1a) of the disc (1), spring plates (3) being inserted in the inner side of the seal plate (2), the seal plate (2) being pressed against seal surfaces (1b) of the grooves (1a) by a resilient force of the spring plates (3), the seal plate (2) being inserted in the grooves by engaging projections (5) and grooves (6) with each other in the circumferential direction of the seal plate.</p> |
