OPERATION OF EXTRACTION TURBINE ACCORDING TO HEATING-LOAD CURVE Russian patent published in 1998 - IPC

FIELD: thermal engineering; cogeneration power plants using extraction turbines. SUBSTANCE: in case of poor tightness in steam-extraction elements of extraction turbines whose stop-valve servomotor is connected to safety pressure controller, safety device is installed in plugs of receiver connecting high-pressure cylinder to low-pressure cylinder, pulsed line is organized to prevent impact of steam exhausted from high-pressure cylinder on main steam valve, and steam is passed from high-pressure cylinder to low-pressure one until main steam valve fully closes. EFFECT: improved economic efficiency and prevention of excessive pressure in high-pressure cylinder during shut-down periods. 1 dwg