Control valve and positioner diagnostics
First Claim
Patent Images
1. 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 an input signal to and an output signal from each of the at least two monitored components; and
determine a condition for each of the at least two components being individually monitored at least partially by comparing the respective input and output signals from each of the at least two monitored components.
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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.
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Citations
22 Claims
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1. A valve positioning system comprising:
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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 an input signal to and an output signal from each of the at least two monitored components; and determine a condition for each of the at least two components being individually monitored at least partially by comparing the respective input and output signals from each of the at least two monitored components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method performed by a valve positioning system, the method comprising:
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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 an input signal to and an output signal from each of the at least two monitored components; and determining a condition for each of at least two components being individually monitored at least partially by comparing the respective input and output signals from each of the at least two monitored components. - View Dependent Claims (12, 13, 14, 15)
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16. A method performed by a valve positioning system comprising:
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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. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification