Method and apparatus for remote control of an underwater valve

Details Method and apparatus for remote control of an underwater valve Method and apparatus for remote control of an underwater valve

1988-02-29

1989-02-21

Chambers, A. Michael

Fluid handling

Destructible or deformable element controlled

Destructible element

1372361, 251 68, F16K 3146

Patent

active

048056570

ABSTRACT:
Improved techniques are provided for opening or closing an underwater valve in a subsea fluid pipeline utilizing an acoustic signal transmitted from the surface to a receiver adjacent the valve. A predetermined torquing force is applied to a shaft directly coupled to the valve stem, although rotation of the valve stem is prevented by the mechanical connection of an explosive bolt. Receipt of the transmitted acoustic signal initiates the release of stored electrical energy which detonates the explosive bolt and breaks the mechanical connection, thereby enabling the pre-existing torquing force to rotate the valve stem. Valve operation reliability is significantly increased, since the torquing force for operating the valve is applied before the valve is installed in the subsea environment.

REFERENCES:
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patent: 3900211 (1975-08-01), Russell et al.
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Installation, Operation and Maintenance of Subsea Acoutic Valve Operation System--Savos.
FutureCraft 381 Series Reusable Explosive Operated Valves.
Danfoss Hydraulic Double-Acting Rotary Actuator.
Grove B-5 Ball Valves.

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