Internal Extraction Pressure Control Shin Nippon

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.

turbine with single internal extraction valve

turbine with dual internal extraction valve