Exhaust chamber of steam turbines, steam turbines and steam turbine exchange processes

摘要

An exhaust chamber of a steam turbine in a design form includes an outer casing comprising an end wall part in an axial direction and an extension part extending upwards in the axial direction from the end wall part, a first guide formed into a ring shape, where the first river line forms a flow-upward region of a diffuser surface in a hub line and is fixed to a flow-upward end of the extension section on a radial inner side of the diffuser surface, and a second river line formed into a ring form,where the second line forms a downstream region of the diffuser surface at a downstream position of the first line and on a radial exterior of the extension part and is fixed to the extension part.