Patent ID: 9441500
Filing Date: 2016-09-13
CPC Classification: F01D,F05D

Claim Text:
1. A steam turbine casing position adjusting apparatus comprising: a rotor; an inner casing that is disposed coaxially with the rotor; an outer casing that is disposed so as to surround an outer side of the inner casing; and an actuator that moves the inner casing in an axial direction with respect to the rotor; at least three sensors that are fixed to the inner casing or a ground on which the outer casing is installed; and a controller configured to control the actuator based on data from the at least three sensors such that the relative position relation between the inner casing and the rotor is maintained by canceling a thermal elongation difference of the rotor in the axial direction with respect to the inner casing and an angle of inclination of the rotor with respect to the inner casing, wherein the actuator is disposed radially outside an outer peripheral surface forming the inner casing.