Patent ID: 8555477
Filing Date: 2013-10-15
Classification: F01D,F05D,Y10T

Abstract:
1. A system for adjusting the clearance between a stator member and the tip of a rotor member in a rotor apparatus; the system comprising: a position adjustment mechanism for adjusting the radial position of the stator member relative to an axis of the rotor apparatus to any one of at least two different radial positions; said position adjustment mechanism being operable when said rotor apparatus is in operation; and a variable pressure chamber having a first pressure state and a second pressure state; the system is arranged for applying a force for maintaining the stator member in either one of said at least two radial positions when said chamber is in said first pressure state and for allowing the position adjustment mechanism to adjust the radial position of the stator member between said at least two positions when the chamber is in said second pressure state, wherein the position adjustment mechanism comprises a first member and a second member, the second member being located radially outward from the first member and being physically separate from and movable relative to the first member, the system being arranged such that when the variable pressure chamber is in the first pressure state said force pushes the first and second members together, and when the variable pressure chamber is in the second pressure state said force is reduced, eliminated or reversed, and wherein either the first or second member comprises a rotable cam, whereby the radial position at which the stator member is supported can be adjusted by rotating said cam.