Leaf seal for a turbomachine

Abstract

A leaf seal is provided for sealing a radial gap between a stator and rotor of a turbo machine. The seal includes a plurality of metallic sealing leaves, arranged in a row and attached to a carrier. The leaves are arranged concentrically around the circumference of the rotor and are arranged inclined at an angle to the radial direction of the rotor and in an opposite direction to the rotation direction and also includes front and rear plates connected to the carrier and extend over a circumference of the seal on both sides of the sealing leaves. A first axial distance is defined between the rear plate and the sealing leaves, and a second axial distance is defined between the front plate and the sealing leaves. An apparatus is also included for actively controlled variation of the first axial distance during operation of the turbomachine.

Dependencies are inferred from the claim text.