METHOD AND SYSTEM FOR CONTROLLING OPERATION OF UTILIZATION STEAM BOILER PLANT Russian patent published in 1995 - IPC

FIELD: heat power engineering. SUBSTANCE: when intensity of heating of utilization boiler 1 decreases, evaporation inside the boiler stops and the boiler begins to fill with water instead of steam-water mixture. The level of water in the steam separator 2 begins to decrease. As the result, pickup 9 generates a signal that causes opening of control valve 8 . When steam pressure in separator becomes lesser than the working pressure of steam in boiler 10 operated by cold fuel, pressure gauge 15 generates control signal which causes cutting of supply of feeding water by shutting the feed pump off. EFFECT: simplified method and enhanced reliability of the system. 2 dwg