Patent ID: 7524164

Claim:
An arrangement for automatic running gap control on a turbine having at least two stages, comprising first and second rotors within an outer casing, shroud segments moveably arranged around the rotors, stator vanes positioned upstream, between and downstream of these rotors, a bridge connecting the upstream and downstream stator vanes at outer platforms thereof, the bridge being axially and circumferentially fixed and radially located on the outer casing, the intermediate stator vanes and shroud segments being attached to the bridge; wherein the bridge includes a plurality of circumferentially arranged bridge elements and the bridge elements are each located on the outer casing by radially flexible links which form a segmented inner casing, with a separate supporting element, which is radially, axially and circumferentially fixed on each bridge element, being integrally connected to the respective intermediate stator vane and the second shroud segment.