| 摘要 |
PROBLEM TO BE SOLVED: To provide a water-discharging pressure control device capable of quickly performing automatic pressure-adjusting control against fluctuation in flow rate and pressure.SOLUTION: A control part 28 drives a motor of an actuator 24 so as to eliminate a deviation &Dgr;P between a secondary side target water-discharging pressure Pi of an open valve 20 and a secondary side pressure P detected by a pressure sensor 26 to perform control so as to keep a set pressure of a pressure-regulating valve 22 at the target water-discharging pressure. The pressure-regulating valve 22 adjusts a valve opening degree of the open valve 20 so as to keep the secondary side pressure of the open valve 20 at the target water-discharging pressure Pi through driving of the actuator 24 that is controlled by the control part 28. |
