| 摘要 |
PURPOSE:To secure stably a necessary pressure of each consumer at all times by executing a booster fan discharge pressure control based on a prescribed expression, forecasting a variation of a gas holder level, and correcting a pressure control thereby. CONSTITUTION:A marketing gas which is supplied from a gas generating part is stored temporarily in a gas holder D, and when supplying it to plural consumers F1-F4 through a booster fan BF, a discharge pressure of the booster fan BF is controlled so that the maximum pressure obtained from a prescribed expression is secured, in the necessary supply pressure of every consumer deviced from a pressure loss of a piping system and a necessary pressure of each consumer. Also, a variation of a gas holder level is forecast from the generated gas quality in a gas generating part and the consumed gas quantity in each consumer. In case this forecasting value is above the upper limit or below lower limit, an alarm is generated, and a correction control by a feedback is executed. |
