Pilot Assisted Self-Powered Actuator Valve and Device
OwnerMingsheng Liuinventor
Life of this patent
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Abstract
A pilot assisted self-powered valve actuator for vertical action valves (global valve, gate valves, and others), rotation action valves (ball valves, butterfly valves, and other plug valves), and four-way modulation valves to control flow from 0% to 100%. It consists of actuator chamber which is connected to both valve inlet and outlet, an actuator plug which is positioned by one or two coil springs and is driven under the pressure difference from inlet and outlet of the valve, and a pilot valve and bleeding hole(s) which control and adjust the pressure on one side of the actuator plug. The pilot assisted self-powered valve provides superior control performance and costs a fraction of the pneumatic and/or electrical control actuators.
Claims22
A pilot assisted self-powered valve actuator and method for modulating the valve flow from 0% to 100% to satisfy dynamic control purpose, said self-powered actuator for a valve comprising:
- at least one actuator plug which either moves vertically or rotates to the control the valve position.
- at least one coil spring which pre-positions the valve and provide stability of the actuator plug.
- at least two ports which are located at the valve inlet and outlet respectively.
- at least one actuator chamber which hosts the actuator plug and is connected to the inlet and the outlet of the valve.
- at least two pipelines which connect the actuator chamber to both inlet and outlet ports.
- at least one pilot valve which can be installed on either the pipeline which connects the inlet port and the actuator chamber or the pipeline which connects the outlet port to the actuator chamber.
- at least one bleeding hole which adjust the pressure on one side of the actuator plug.
- at least one track rod.
Dependencies are inferred from the claim text.