Labyrinth Seal For Adjusting Gap

摘要

The present invention relates to a labyrinth seal used for controlling the axial leakage rate of a working fluid by using the rotating shaft of a turbo-machine such as a compressor or turbine The labyrinth seal includes: a seal disk radially extending from a rotating shaft and being formed on the rotating shaft; a seal ring spaced apart from the seal disk and being opposed to the seal disk; an actuator for moving the seal ring to adjust a gap between the seal disk and the seal ring; and a controller for controlling an operation of the actuator. By actively adjusting the gap between the seal disk and the seal ring, it is possible to effectively prevent the working fluid from leaking.