| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a pressure control circuit which allows continuous pressure control by eliminating an overshoot phenomenon when an automatic resetting circuit of an intensifier is operated by a pressure control device using the intensifier. <P>SOLUTION: The hydraulic control circuit having improved pressure controllability is equipped with a control means for eliminating the pressure difference between a pressure container 3 and the high pressure side of the intensifier 2, even when the automatic resetting circuit of the intensifier 2 is operated resulting from oil leakage out of a high pressure shut-off valve 8 or the like, eliminates a phenomenon that the hydraulic pressure of the pressure container overshoots when the automatic resetting circuit of the intensifier 2 is operated, and minimizes a pressure drop on a VC roll side when a high pressure shut-off valve is opened, so that the continuous pressure control of the pressure container becomes possible. Thereby, the hydraulic control circuit is widely applicable to a continuous pressure control device such as the pressure vessel. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
