Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1991-01-11
1992-03-31
Chambers, A. Michael
Fluid handling
Systems
Flow path with serial valves and/or closures
137614, 251282, 285106, 285900, F16L 3728
Patent
active
050998820
ABSTRACT:
A pressure-balanced hydraulic coupling for use in undersea drilling and production operations, the coupling having radial passageways communicating between the male and female members such that substantial fluid pressure is not exerted against the face of either member during coupling or uncoupling or during the coupled state. Check valves in both the male and female members are opened when the male member probe is fully inserted into the receiving chamber of the female member. Mutually opposed valve actuators contact one another to effectuate the simultaneous opening of each check valve, and allow fluid to flow through a valve port and then radially through matching fluid passageways in the male and female members. The radial passageways of the male and female members match up at their longitudinal surfaces so that fluid pressure between the male and female members is in a substantially radial direction and is not exerted at the face of either member. A first pair of seals is positioned on each side of the radial passage for sealing between the receiving chamber and the seal retainer. A second pair of seals is positioned on each side of the radial passage for sealing between the seal retainer and the male member. The seals are pressure-energized metal seals.
REFERENCES:
patent: 4709726 (1987-12-01), Fitzgibbons
patent: 4754780 (1988-07-01), Smith, III
patent: 4813454 (1989-03-01), Smith, III
patent: 4858648 (1989-08-01), Smith, III et al.
patent: 5015016 (1991-05-01), Smith, III
Chambers A. Michael
National Coupling Company Inc.
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