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US 10,767,784 B2Granted
Gate valve with pneumatic system for shearing application
AssigneeCameron International Corporation
InventorLoc Gia Hoang
Life of this patent
Estimating the term…
Abstract
Embodiments of the present disclosure are directed toward a second pneumatic actuator configured to couple to a gate valve, wherein the second pneumatic actuator is configured to apply a supplemental force to a gate of the gate valve, wherein the supplemental force supplements an actuating force of a first actuator of the gate valve.
Claims16
A system, comprising:
- a gate valve, comprising:
- a body comprising a cavity disposed along a fluid flow path, wherein the fluid flow path is configured to receive a line extending lengthwise along the fluid flow path;
- a gate configured to move across the fluid flow path into the cavity between an open position and a closed position to shear the line;
- a first actuator comprising at least one spring configured to bias the gate towards the closed position with a biasing force, wherein the at least one spring is undersized such that the biasing force is insufficient to enable the gate to shear through the line;
- a first piston coupled to a shaft and to the first actuator on a first side of the first piston;
- a first fluid actuator comprising a second piston and a first pressurized gas configured to apply a first supplemental pneumatic force against the second piston in a common direction with the biasing force to move the gate towards the closed position, and the second piston couples to the shaft;
- a second fluid actuator comprising a storage of a second pressurized gas configured to apply a second supplemental pneumatic force against the first piston in the common direction with the biasing force to move the gate towards the closed position;
- and
- a controller configured to control release of the second pressurized gas from the storage to provide the second supplemental pneumatic force that combines with the biasing force to create a cumulative force, wherein the controller is configured to increase a pressure of the second pressurized gas until the cumulative force is sufficient to enable the gate to shear through the line and complete a movement from the open position to the closed position.
6 more elements
A system, comprising:
- a valve assembly, comprising:
- a body having a cavity disposed along a fluid flow path;
- a valve member configured to move in the cavity between an open position and a closed position relative to the fluid flow path;
- a first actuator comprising at least one spring configured to bias the valve member with a first force in a first direction between the open position and the closed position, wherein the at least one spring is undersized such that the first force is insufficient to enable the valve member to shear through an obstruction in the fluid flow path;
- a first piston coupled to a shaft and to the first actuator on a first side of the first piston;
- a second actuator comprising a second piston and a first pressurized gas configured to bias the valve member with a second force in the first direction between the open position and the closed position;
- and
- a third actuator comprising a storage of a second pressurized gas configured to bias the valve member with a third force in the first direction between the open and the closed positions;
- wherein the valve assembly is configured to provide a cumulative force that combines the first, the second, and the third forces of the respective first, second, and third actuators, and the valve assembly is configured to increase a pressure provided by the second pressurized gas until the cumulative force is sufficient to enable the valve member to shear through the obstruction and complete a movement from the open position to the closed position.
6 more elements
A method, comprising:
- adjusting a fluid flow path with a valve assembly having a valve member that moves through a cavity between an open position and a closed position relative to the fluid flow path;
- biasing the valve member with a first force in a first direction between the open position and the closed position using a first actuator comprising at least one spring, wherein the at least one spring is undersized such that the first force is insufficient to enable the valve member to shear through an obstruction disposed along the fluid flow path;
- biasing the valve member with a second force in the first direction between the open position and the closed position using a second actuator comprising a first pressurized gas;
- biasing the valve member with a third force in the first direction between the open and closed positions using a third actuator comprising a second pressurized gas;
- and
- controlling the valve assembly to provide a cumulative force that combines the first, the second, and the third forces of the respective first, second, and third actuators, wherein controlling comprises increasing a pressure provided by the second pressurized gas until the cumulative force is sufficient to enable the valve member to shear through the obstruction and complete a movement from the open position to the closed position.
3 more elements
Dependencies are inferred from the claim text.