Fluid cargo handling system with quick release
AssigneeStena Power & LNG Solutions AS
InventorsKnut-Erik Johansen, Svein Borge Hellesmark
Life of this patent
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Abstract
A fluid cargo handling system includes a quick release manifold system mounted on a floating marine platform. The quick release manifold system has a first valve in fluid communication with the first end of a first fluid transfer hose to control fluid flow within the first fluid transfer hose. A first coupler is attached to the first valve. The first coupler has a first port in fluid communication with the first valve, a second port, a purging fluid inlet and a waste fluid outlet. A drain tank is in fluid communication with the first coupler via the waste fluid outlet, and a pressurized fluid source carried is in fluid communication with the first coupler via the purging fluid inlet.
Claims27
A fluid cargo handling system comprising:
- a first fluid transfer line having a first end and a second end;
- a first valve disposed at the first end of the first fluid transfer line, the first valve having a valve port;
- a second fluid transfer line having a first end and a second end;
- a second valve disposed at the first end of the second fluid transfer line, the second valve having a valve port;
- a coupler attached to the first valve and the second valve, the coupler having a first port in fluid communication with the valve port of the first valve, a second port in fluid communication with the valve port of the second valve, a purging fluid inlet and a waste fluid outlet;
- a pressurized fluid source in fluid communication with the purging fluid inlet of the coupler;
- and a drain tank in fluid communication with the waste fluid outlet of the coupler.
A fluid cargo handling system comprising:
- a first marine platform;
- a first fluid transfer hose carried on the first marine platform, the first fluid transfer hose having a first end and a second end;
- and
- a manifold system carried on the first marine platform and in fluid communication with the first end of the first fluid transfer hose, wherein the manifold system comprises a first valve in fluid communication with first end of the first fluid transfer hose to control fluid flow within the first fluid transfer hose;
- a first coupler attached to the first valve downstream of the fluid transfer hose, wherein the first coupler has a first port in fluid communication with the first valve, a second port, a purging fluid inlet and a waste fluid outlet;
- a drain tank carried on the first marine platform and in fluid communication with the first coupler via the waste fluid outlet;
- and a pressurized fluid source carried on the first marine platform and in fluid communication with the first coupler via the purging fluid inlet.
A method for fluid cargo transfer comprising utilizing a coupling mechanism to couple a first valve of a first marine platform adjacent to a second valve of a second marine platform;
- operating the first and second valves to initiate flow of a cargo fluid between the first and second marine platforms;
- stopping the pumping of cargo fluid between the first and second marine platforms upon identification of an emergency release event;
- thereafter, closing the first and second valves to isolate the coupling mechanism;
- injecting a pressurized flushing fluid into the coupling mechanism;
- flushing the release mechanism of cargo fluid remaining in the coupling mechanism after the first and second valves are closed;
- and utilizing the injected pressurized fluid to drive the flushed cargo fluid into a drainage tank.
A method for fluid transfer comprising coupling a first valve adjacent to a second valve to define an internal cavity therebetween;
- operating the first and second valves to initiate flow of a cryogenic liquid through the internal cavity and between the first and second valves;
- pumping cryogenic liquid through the first and second valves;
- upon identification of an emergency release event, stopping the pumping of cryogenic liquid;
- thereafter closing the first and second valves to isolate the internal cavity;
- injecting a pressurized flushing gas into the internal cavity;
- flushing the internal cavity of cryogenic liquid remaining in the internal cavity after the first and second valves are closed;
- and utilizing the injected pressurized flushing gas to drive the cryogenic liquid into a drainage tank.
A method for fluid transfer comprising coupling a first valve adjacent to a second valve to define an internal cavity therebetween;
- operating the first and second valves to initiate flow of a cryogenic liquid through the internal cavity and between the first and second valves;
- closing the first and second valves to isolate the internal cavity;
- injecting a pressurized flushing gas into the internal cavity;
- flushing the internal cavity of cryogenic liquid remaining in the internal cavity after the first and second valves are closed;
- utilizing the injected pressurized flushing gas to drive the cryogenic liquid into a drainage tank;
- and disengaging the first valve from the second valve after the internal cavity has been flushed.
Dependencies are inferred from the claim text.