| 摘要 |
PURPOSE:To prevent the mutual interference with a control system of water supply pressure by controlling a water pressure control valve with a prescribed pattern based on the deviation of the water supply pressure of each water supply control terminal and the variance of the water flow rate. CONSTITUTION:This control system contains the water supply control terminals in the course of a pipeline for supply of water to each house from a distributing reservoir. The water pressure P2 of each terminal is kept at a prescribed level, and each terminal compares the real water pressure P2 measured by a pressure gauge 103 with the target water pressure P02 indicated through a telemeter 105 to obtain a deviation DELTAP. This deviation is supplied to a valve drive part 204 via a blind sector setting unit 201, a valve characteristics correcting part 202 and a control amount deciding part 203 for control of the opening amount of a valve 102. Then a pipeline flow rate meter 1104 is provided together with a detecting part 1101 for flow rate variance DELTAQ/DELTAT, a control pattern deciding part 1102 and a gain setting part 1103. Thus it is possible to decide whether the correction and control should be carried out at an own area or not from the combination of the amount and the direction of variance of the water supply pressure of the own area and the combination of the amount and the direction of the flow rate variance of water. |
