21426 水圧用圧力補償型流量調整弁の研究(複雑流の計測,OS.4 流れの計測と制御)

抄録

This paper describes study on pressure-compensated flow control valve for water hydraulics. A pressure-compensation valve with two throttles in series was installed to suppress cavitation. A pressure-compensation valve has hydrostatic supports to reduce the friction and has a damper to reduce vibration of the valve. The developed flow control valve has adjustable flowrate range of 2.5-20L/min within pressure range of 2-14MPa. Although there are some leakage through hydrostatic supports, discharge flowrate remains almost constant. Flowrate variations is almost 5% in the experimental range. The static characteristics show no hysteresis. The valve is dynamically stable, i.e., no sustained vibration was observed in the range of experiment.