Patent ID: 11028716

Abstract:
A leaf seal assembly 10′ is disclosed for use in a gap between a rotating component 1 and a stationary component 2, for example of a turbo-machine. The leaf seal assembly 10 comprises at least one leaf seal 20′ having a generally planar surface. A runner 50′ is coupled to a distal end of the least one leaf seal 20′. The at least one leaf seal 20′ maintains the runner 50′ in a first position away from the rotating component 1 in an unpressurised inoperative state. The runner 50′ moves to a second position, close to, but not contacting, the rotating component 1 in a pressurised operative state. In some embodiments the at least one leaf seal is angled in the direction of the flow. In some embodiments a first leaf seal is vented. In some embodiments the leaf seal assembly is segmented. In some embodiments the runner comprises segments having a radial thickness which varies circumferentially.