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US 9,518,672 B2Granted
Electronically actuated gate valve
AssigneeCameron International Corporation
InventorsJerry Allen Martino, Vinay Shyamlal Varma, Keith McKinley Adams
Life of this patent
Estimating the term…
Abstract
A system, in certain embodiments, includes a gate valve including a gate disposed within a valve body. The gate valve also includes a motorized ball screw actuator having an actuating rod assembly directly coupled to the gate. The motorized ball screw actuator is configured to linearly actuate the actuating rod assembly to drive the gate between an open position and a closed position.
Claims20
A system comprising:
- a gate valve comprising:
- a valve body having a flow path;
- a gate disposed within the flow path, wherein the gate substantially blocks fluid flow through the flow path while the gate is in a closed position, and allows fluid flow through the flow path while the gate is in an open position;
- an actuator configured to transition the gate between the open position and the closed position, wherein the actuator comprises:
- an outer casing;
- a permanent magnet, direct current (DC) motor comprising a stator rigidly coupled to an interior of the outer casing, and a rotor configured to rotate with respect to the stator;
- and
- an actuating rod assembly engaged with the rotor by a ball screw connection such that rotation of the rotor drives the actuating rod assembly along a longitudinal axis of the actuator, wherein the actuating rod assembly is directly and rigidly coupled to the gate without any gears and without any clutch between the permanent magnet DC motor and the gate.
5 more elements
A system comprising:
- a gate valve comprising:
- a gate disposed within a valve body;
- and
- a motorized ball screw actuator having an electric motor, a ball screw connection directly coupled to a rotor of the electric motor, and an actuating rod assembly directly coupled to the ball screw connection and the gate, wherein the motorized ball screw actuator is configured to linearly actuate the actuating rod assembly to drive the gate between an open position and a closed position.
1 more element
A method of operating a gate valve, comprising:
- applying electrical current to a motorized ball screw actuator having an actuating rod assembly directly coupled to a gate of the gate valve such that the actuating rod assembly drives the gate between an open position and a closed position, wherein the motorized ball screw actuator comprises an electric motor, a ball screw connection directly coupled to a rotor of the electric motor, and the actuating rod assembly directly couples to the ball screw connection and the gate.
Dependencies are inferred from the claim text.