Patent ID: 6665589
Filing Date: 2003-12-16
Classification: F01D,F05D,G01B

Abstract:
A method for aligning a component of a turbine having an outer shell and an inner shell, each having an upper casing, comprising the steps of:with said upper casings of said inner and outer shells removed, determining first relative elevations of left and right support points for said component with respect to elevations of left and right points on said inner shell; with said upper casings of said inner and outer shells removed, determining second relative elevations of left and right points on said outer shell with respect to an elevation of an outer shell support point; calculating left and right total displacement values by adding said first relative elevations to said second relative elevations; calculating a prediction offset value using said left and right total displacement values; and adjusting said left and right support points of said component in accordance with said prediction offset value, wherein said prediction offset value compensates for distortion caused by replacement of said upper casings of said inner and outer shells.