| 摘要 |
The invention relates to a turbine (1) of a power plant, preferably a steam turbine, comprising a stator (2), which has a housing (4) and in the housing (4) at least one stator blade carrier (5, 6, 7) comprising stator blades (8), a rotor (3), which has a rotor shaft (9) comprising rotor blades (11), and at least one sealing device (12), which axially seals the respective stator blade carrier (5, 6, 7) with respect to the housing (4) and separates two regions (20, 21) having different pressures from one another. Improved sealing action is achieved in that the sealing device (12) comprises an axially acting primary sealing ring (24) extending in the circumferential direction, said sealing ring facing the region (21) having the lower pressure, and an axially acting additional sealing ring (25) extending in the circumferential direction, said sealing ring facing the region (20) having the higher pressure. The primary sealing ring is attached axially rigidly on the stator blade carrier and the additional sealing ring is attached axially movably, wherein the additional sealing ring is tensioned axially in the direction of the region having the higher pressure by means of at least one spring element. |
