Abstract: Installation for centering, in an outer housing, an inner housing of a steam turbine having an extraction interstage including a tubular shaped portion formed on the inner housing and communicating with the extraction interstage, the outer housing having a wall formed with a passageway wherein the tubular shaped portion is received, an extraction connecting pipe disposed on the outer housing over the passageway thereof, the extraction connecting pipe having sealing surfaces engaging with corresponding sealing surfaces formed on the wall of the outer housing, the mutually engaging sealing surface being disposd eccentrically to the passageway and to the tubular shaped portion, the tubular shaped portion having a projection with lateral flanks extending therefrom and engaging with clearance in a corresponding lateral recess formed in the wall of the outer housing, and key means disposed in the clearance between the lateral flanks of the projecton and the wall of the outer housing for centering the inner housing

Abstract: Shaft sealing system for a steam turbine having a horizontally divided outer housing and a shaft sealing cover disposed at an end of the outer housing includes a shaft seal having a part thereof received in the cover, an outer and lower part of the shaft seal together with a respective part of the cover being rigid with the outer housing, and an upper cover segment, having a parting joint in common with the lower part of the shaft seal at the level of an upper edge of a flange for the horizontally divided outer housing, being threadedly securable to the outer housing.