| 摘要 |
PURPOSE:To perform optimum water distribution to a water distributing pipeline network by putting the 1st water distribution source whose discharge flow rate is varied and the 2nd water distribution source whose terminal pressure is controlled in special operation. CONSTITUTION:A water distribution system consists of the distributing pipe network 11, three water distributing sources, i.e. source 12 which distributes water by a discharge flow rate varying device with an abnormal pressure limiting fnction, source 12' which distributes water by a discharge flow rate varying device, and source 13 which distributes water by a discharge pressure varying device, and terminal pressure detectors PD1-PD3. The partial charge flow rates of the respective water distributing sources are preset to obtain a distribution flow rate command based upon a daily distribution flow rate pattern. Flow rate control is performed through the water distributing sources 12 and 12' to a basic flow rate at an optional discharge rate while the pressure is suppressed to an upper-limit or a lower-limit value. The terminal pressure is compensated by the water distribution source 13, so water distribution pressure control is performed with signals from the pressure detectors PD1-PD3. |
