CONTROLLING METHOD OF WATER LEVEL

摘要

PURPOSE:To restore a water level to a reference water level for a short time and to stably supply water to the succeeding process by executing proportional and integrating operations at the variation of the water level and outputting inflow rate corresonding to the removal of the deviation of water levels during the period the water level deviation is kept. CONSTITUTION:The deviation between water levels is operated from a real water level obtained from a water level meter 2 and a reference water level and whether the deviation exists or not is detected by a water level deviation operation detecting circuit 12. A prescribed flow rate deviation is found from the obtained water level deviation by using proportional and integrating operation items in a flow rate operating circuit for conversion of water levels. An objective inflow rate is found from the outflow rate and flow rate deviation inputted to a converter 12 by an operator 15. When the deviation is detected by a discriminating circuit 12, the objective inflow calue is outputted to a flow rate controlling device 5 to restore the water level to the prescribed reference water level.