| 摘要 |
PROBLEM TO BE SOLVED: To further reduce a leak flow rate and to improve performance of a gas turbine, with a constitution in which a high-pressure side and a low-pressure side are partitioned and blocked by a plurality of seal plates.SOLUTION: A seal device disposed between a plurality of segments adjacent to each other configuring a turbine, includes a first seal groove 32a and a second seal groove 31a respectively formed on opposed faces of the segments in opposition to each other, the first seal groove and the second seal groove are formed at a certain angle, and connected. A first seal plate 52 and a second seal plate 50 are respectively mounted in the first seal groove and the second seal groove in a state of crossing over the opposed seal groove. A seal 60 is disposed at a downstream side position with respect to leak flow, of a longitudinal end face 52a of the first seal plate, to block the leak flow flowing down in a clearance formed between the longitudinal end face 52a of the first seal plate and an anti-seal face 50d of the second seal plate.SELECTED DRAWING: Figure 12 |
