Patent ID: 8105023
Filing Date: 2012-01-31
Classification: F01D,F05D

Abstract:
1. A steam turbine comprising: a casing; a rotor rotatably arranged in the casing; at least one nozzle diaphragm substantially concentrically arranged with respect to the rotor, the nozzle diaphragm being engaged with the casing; a plurality of moving blades arranged in circumferential direction on outer circumference of the rotor at positions adjacent to the nozzle diaphragm; one or more seal strips circumferentially extending on tips of the moving blades, the seal strips protruding in radial outward direction; and an abradable structure rigidly connected to the nozzle diaphragm, the abradable structure facing the seal strips in radial direction at a facing surface and having an abradable part made of an abradable material arranged at the facing surface.