| 摘要 |
A labyrinth seal (24) is provided for forming a seal between a first and a second component which rotate relative to each other. The seal has an abradable lining (38) mounted to the first component, and a plurality of fins (46) projecting from the second component. The fins are arranged in abutment with the abradable lining to form a labyrinthal path for a flow of air through the seal. The seal further has a bypass passage (36) which extends through the abradable lining. The bypass passage allows air to flow through the seal and bypass the labyrinthal path. |
