Electric bleed off valve assembly
AssigneeFMC Technologies, Inc.
InventorJames Cook
Life of this patent
Estimating the term…
Abstract
Systems and methods of controlling pressure bleed off by a bleed off valve assembly are disclosed. In some embodiments, a bleed off line is positioned along a main line. The bleed off line comprises a bleed off valve (BOV) and a first valve configured to provide fluid communication between the BOV and the main line. The BOV is configured to close under electrical energy to prevent the flow of the fluid through the BOV. When the electrical energy is removed, the BOV is operable to open under pressure from the fluid. The flow of the fluid through the BOV assembly may further be controlled by a choke and a choke saver positioned downstream of the BOV. In some embodiments, the electrically controlled BOV assembly is positioned parallel with a pressure relief system along the main line.
Claims20
An electric bleed off valve assembly for bleeding off pressure, the electric bleed off valve assembly comprising:
- a first valve operable to open and close and configured to allow fluid to flow through a bleed off line when open and prevent the fluid from flowing when closed;
- a bleed off valve provided downstream from the first valve and operable to open under pressure from the fluid and configured to allow the fluid to flow when open and prevent the fluid from flowing when closed;
- wherein the bleed off valve is electrically operable to close and operable to open under pressure from the fluid;
- and
- a choke provided downstream of the bleed off valve and operable to restrict flow of the fluid therethrough.
An electric bleed off valve assembly for bleeding off pressure, the electric bleed off valve assembly comprising:
- a first valve operable to open and close and configured to allow fluid to flow through a bleed off line when open and prevent the fluid from flowing when closed;
- a bleed off valve provided downstream from the first valve and configured to allow the fluid to flow when open and prevent the fluid from flowing when closed,
- wherein the bleed off valve is electrically operable to close and operable to open under pressure from the fluid;
- a choke provided downstream of the bleed off valve and operable to restrict flow of the fluid therethrough;
- and
- a pressure relief valve positioned in parallel with the bleed off valve and electrically operable to close and operable to open under pressure from the fluid when the pressure of the fluid is above a pressure threshold.
A method of controlling pressure bleed off in a bleed off line, the method comprising:
- energizing a solenoid to maintain a closed position of a bleed off valve preventing flow of a fluid through a pressure bleed off line;
- de-energizing the solenoid allowing the bleed off valve to transition from the closed position to an open position;
- opening the bleed off valve by providing pressure to a valve member of the bleed off valve and forcing the valve member to actuate allowing the flow of the fluid from upstream of the bleed off valve to downstream of the bleed off valve in the bleed off line;
- and
- controlling the flow of the fluid by a choke provided downstream of the bleed off valve.
Dependencies are inferred from the claim text.