FIELD: control of superheat temperature of steam generated by boiler units (steam generators) of thermal power stations. SUBSTANCE: system of delivery of feed water to spray-type attemperators of boiler includes spare lines fitted with adjusting valves and brought in communication with feed main through branch pipe provided with throttling device. Inlet sections of spray lines are connected to dispensing header; outlet section of branch pipe after throttling device is connected only to above-mentioned header. Throttling device is made in form of adjusting throttle valve whose regulator is connected with water pressure pickup fitted in header. Pressure setting of valve regulator is so selected that pressure at throttle valve and adjusting valves of spray lines is maintained at level ensuring their erosion safety. EFFECT: enhanced erosion safety. 1 dwg
