Control valve and positioner diagnostics
AssigneeDresser, Inc.
InventorsHENRY W. BOGER, SANDRO ESPOSITO
Life of this patent
Estimating the term…
Abstract
Valve positioning systems may include one or more components and a controller. Components may include one or more electric-to-pressure output converters, relays, gas supplies, and/or actuators. A controller may adjust a position of a valve by sending a signal. The valve positioning system may individually monitor components and determine the condition of each component being individually monitored. The valve positioning system may determine if a component will fail prior to failure and/or determine if a problem will occur in a component prior to the problem occurring.
Claims22
A valve positioning system comprising:
- at least two or more components, wherein at least one of the components comprises an electric-to-pressure output converter;
- and
- a controller configured to:
- adjust a position of a valve by sending a command signal to the electric-to-pressure output converter;
- individually monitor at least two of the components of the valve positioning system by determining signals from an inlet and an outlet of each of the at least two components;
- and
- determine e a condition for each of at least two of the components being individually monitored by comparing the inlet and outlet signals from the at least two components.
A method performed by a valve positioning system, the method comprising:
- individually monitoring at least two components of a valve positioning system, wherein one of the components comprises an electric-to-pressure output converter, by determining signals from an inlet and an outlet of each of the at least two components;
- and
- determining a condition for each of at least two of the components being individually monitored by comparing the inlet and outlet signals from the at least two components.
A method performed by a valve positioning system comprising:
- adjusting an input signal to at least one component of a valve positioning system such that a valve actuator is inhibited from responding to the input signal change;
- and
- determining a condition of at least one of the components at least partially based on the adjusted input signal.
Dependencies are inferred from the claim text.