Subaqueous sequence valve mechanism

Details Subaqueous sequence valve mechanism Subaqueous sequence valve mechanism

1977-10-31

1980-01-29

Cohan, Allan

Fluid handling

Ambient condition change responsive

Underwater

60398, 137628, 137637, 251 25, E21B 4301

Patent

active

041856520

ABSTRACT:
A subaqueous sequence valve mechanism includes one or more main valves each adapted to be disposed in the water below the surface thereof. A first expansible chamber hydraulic actuator on the main valve operates that valve and also operates a second expansible chamber device against a spring. A hydraulic pressure line or lead from a controlled source above the surface is joined to and controls the submerged actuator. The second expansible chamber is connected in sequence through a throttle valve and a pressure relief valve to one side of a movable barrier in a hydraulic accumulator. On the other side of the movable barrier the accumulator is open to the water. There is also a return, one way flow valve shunting the pressure relief valve. The accumulator is hydraulically protected by a spring loaded check valve discharging into the water.

REFERENCES:
patent: 3993100 (1976-11-01), Pollard et al.

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