OPERATION CONTROLLER FOR THERMAL POWER PLANT EQUIPPED WITH STORED STEAM POWER GENERATION SYSTEM

摘要

PURPOSE:To permit heat accumulation in stable state by keeping constant steam pressure in a bleed pipe by means of the pressure controller which controls the turbing of an intercept valve during heat accumulation in which the regenerative heat-steam bleed valve is opened in the regenerative heat-steam bleed pipe which is branched from a boiler. CONSTITUTION:When the signal from a wattmeter 36 reaches a prescribed value, a starter 37 operates and a regenerative heat-steam bleed valve 22 is controlled in the opening direction. The pressure gauge 39 for detecting the pressure of the high-temperature regenerative-heat steam is installed in a high-temperature regenerative-heat steam pipe 8, and the pressure signal is transmitted to a function calculator 40. When the regenerative heat-steam bleeding valve 22 begins to open owing to the signal from the starter 37, the output signal from a starter 37 is applied into the function calculator 40 then the opening of the intercept valve 10 is controlled so that the pressure in the high- temperature-regenerative heat steam pipe 8 is kept at a prescribed value. The bleed valve 22 is closed by the signal of a regerative heat stopper 41 through the discriminator 38 for opening and closing of the regenerative heat-steam bleed valve, and the pressure control of the intercept valve 10 is released through the function calculator 40.