Automatic choking hydraulic shock reduction valve
AssigneeHydril USA Distribution LLC
InventorsAlexander McAuley, Thuc Ngoc Nguyen, Claudia Leon, Alexander Woodruff-Hall
Life of this patent
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Abstract
A valve for preventing hydraulic shock and water hammer in downstream equipment, the valve including a valve body with an internal oil dampening chamber, an orifice arranged within the oil dampening chamber, a flow dampener positioned between the valve inlet and the orifice, and a spring between the valve body and the orifice. The valve is pressure compensated based on the ambient fluid pressure.
Claims21
An automatic choking hydraulic shock reduction valve, the valve comprising:
- a valve body;
- a piston element slidably positioned within the valve body, wherein the piston element has an orifice formed axially therethrough;
- an oil dampening chamber positioned between the piston element and the valve body, wherein the oil dampening chamber is sealed from the orifice through the piston element;
- a flow dampener positioned between an inlet of the valve and the orifice of the piston element, wherein the piston element is movable relative to the flow dampener;
- and
- a spring positioned between the valved body and the piston element;
- wherein the valve is pressured compensated for a depth pressure of an ambient fluid.
An oil dampening system, the system comprising:
- an upstream oil dampening chamber substantially filled with an oil;
- a downstream oil dampening chamber substantially filled with the oil;
- a piston element between the upstream oil dampening chamber and the downstream oil dampening chamber that is axially moveable through the system, wherein the piston element seals the upstream oil dampening chamber from the downstream oil dampening chamber;
- an upstream port fluidly connected to the upstream oil dampening chamber;
- a downstream port fluidly connected to the downstream oil dampening chamber;
- where the oil dampening system is pressure compensated for a depth pressure of an ambient fluid.
A method of manufacturing an automatic choking hydraulic shock reduction valve comprising:
- manufacturing an upstream valve body, downstream valve body, a piston element, a flow dampener, and a spring, wherein the piston element has an orifice formed axially through the piston element;
- assembling the valve such that the piston element is axially moveable between the upstream valve body and the downstream valve body and the spring exerts a force on the piston element away from the downstream valve body;
- and
- positioning the flow dampener at least partially through the orifice of the piston element.
Dependencies are inferred from the claim text.