| 摘要 |
<p>1,106,264. Valves. J. L. GRATZMULLER. 28 March, 1966 [31 March, 1965], No. 13542/66. Heading F2V. An hydraulically-operated valve, controlling the flow of oil from a submarine oil well head 4 to storage tanks, comprises a valve closure 24, loaded to the closed position by a spring 26 and opened by fluid pressure fed through a pipe 20 to act on a jack piston 30. The supply and exhaust of fluid in the pipe 20 is controlled by a manually actuated valve or solenoid valve at a remote control station. To provide a rapid closing action of the valve 24, a valve 80 carried by a piston 82 is subjected at opposite sides to the pressure in the pipe 20 and the jack cylinder 32 so that when the pipe 20 is connected to exhaust, the pressure in the jack opens the valve 80 to allow exhaust into a bell chamber 64. The chamber 64 is filled with oil to prevent corrosion from sea water and the chamber has an outlet 65 to a tube 86 so that oil may pass into the tube when the ram descends, due to the reduced space caused by the size of the ram plunger 70, the discharge through the valve 80 makes up the oil when the plunger 70 is retracted. A two-way non-return valve arrangement 88, 92 may be provided in the tube 86.</p> |
