LABYRINTH SEAL, AND LABYRINTH SEAL STRUCTURE

摘要

To reduce a leakage rate of fluid in a labyrinth seal.SOLUTION: A labyrinth seal 40 comprises a first center branch fin 61 extending toward a first fin 51 from a side surface of a center fin 41 on an X1 side, and a second center branch fin 62 extending toward a second fin 52 from a side surface of the center fin 41 on an X2 side. A center fin tip part 41t (a tip part of the center fin 41) is arranged closer to the side of a first member 10 than an end part (61p) of the first center branch fin 61 on the side of the center fin 41. The center fin tip part 41t (the tip part of the center fin 41) is arranged closer to the side of the first member 10 than an end part (62p) of the second center branch fin 62 on the side of the center fin 41.SELECTED DRAWING: Figure 1