Failsafe close valve assembly
AssigneeOneSubsea IP UK Limited
InventorsJohn R. Meijer, Mangesh Edke
Life of this patent
Estimating the term…
Abstract
A valve assembly includes a ball configured to block fluid flow through the valve assembly while the ball is in a closed position and to enable fluid flow through the valve assembly while the ball is in an open position. The valve assembly also includes an actuator assembly configured to drive the ball to transition between the open position and the closed position. In addition, the valve assembly includes multiple compression springs disposed on one side of the ball. Each compression spring of the multiple compression springs is configured to directly urge the ball toward the closed position.
Claims20
A valve assembly, comprising:
- a ball configured to block fluid flow through the valve assembly while the ball is in a closed position and to enable fluid flow through the valve assembly while the ball is in an open position;
- an actuator assembly configured to drive the ball to transition between the open position and the closed position;
- and
- a plurality of compression springs disposed on one side of the ball, wherein each compression spring of the plurality of compression springs is configured to directly urge the ball toward the closed position.
A valve assembly, comprising:
- a ball configured to block fluid flow through the valve assembly while the ball is in a closed position and to enable fluid flow through the valve assembly while the ball is in an open position;
- an actuator assembly comprising a first piston and a second piston, wherein the first piston is configured to drive the ball to transition to the closed position, and the second piston is configured to drive the ball to transition to the closed position;
- and
- a plurality of compression springs disposed on one side of the ball, wherein each compression spring of the plurality of compression springs is configured to directly urge the first piston to drive the ball to transition to the closed position.
A valve assembly, comprising:
- a ball configured to block fluid flow through the valve assembly while the ball is in a closed position and to enable fluid flow through the valve assembly while the ball is in an open position;
- an actuator assembly comprising a first piston positioned on a first side of the ball and a second piston positioned on a second side of the ball, opposite the first side, wherein the first piston is configured to move is a first direction to drive the ball toward the closed position, and the second piston is configured to move in a second direction, opposite the first direction, to drive the ball toward the open position;
- a fluid chamber extending between the first piston and a base, wherein the fluid chamber is configured to receive pressurized fluid to drive the first piston to move in the first direction, and
- a plurality of compression springs disposed within the fluid chamber, wherein each compression spring of the plurality of compression springs is configured to directly urge the first piston to move in the first direction to drive the ball toward the closed position.
Dependencies are inferred from the claim text.