Overview
This turbine extracts steam internally from the middle of the impeller stages, establishing a stable supply of steam for plant processes at every turbine load up to the rated maximum. In internal extraction pressure control, a pressure control valve inside the turbine casing regulates pressure from the upstream, ensuring even extraction pressure at all times. In a single turbine, one or two internal control valves may be selected, allowing for steam extraction at medium and low pressures simultaneously.
