Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1987-02-04
1988-01-26
Chambers, A. Michael
Fluid handling
Systems
Flow path with serial valves and/or closures
166321, 166332, 251250, 285 18, F16L 3728
Patent
active
047211326
ABSTRACT:
A quick disconnect coupling for a subsea well flowline has valves that open and close when the coupling is made up and released. The coupling has tubular upper and lower connectors, each with a flow passage. The upper connector inserts over a mandrel of the lower connector. Ball valves are located in the passage of each connector. A latch member engages the mandrel when moved by a hydraulically actuated piston and a cam. A gear assembly connected with the piston simultaneously moves the upper ball valve to the closed position. A gear assembly connected with the lower ball valve simultaneously opens the lower ball valve when the upper connector latches to the lower connector.
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Bradley James E.
Chambers A. Michael
Hughes Tool Company
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