| 摘要 |
An apparatus, fixed or recoverable to control a remote device includes a valve assembly having a cylinder, a piston dividing the cylinder into a first hydraulic chamber and a second hydraulic chamber, a spring to bias the piston toward the first hydraulic chamber, and a linkage to connect the piston to the remote device, a quick-vent valve assembly comprising an inlet connected to a hydraulic source, an outlet connected to the first hydraulic chamber, and a vent port, wherein the quick- vent valve assembly is configured to discharge fluid from the outlet to the vent when a pressure of the hydraulic source connected to the inlet drops below a threshold value, and a vent line connecting the vent port of the quick-vent valve assembly to a hydraulic accumulator. |
