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US 2016/0098042 A1Published application
Valve position demand systems and methods
AssigneeGeneral Electric Company
InventorWilliam Randolph Shinkle
Life of this patent
Estimating the term…
Abstract
A method includes: obtaining a measurement; determining whether the measurement is in a first range, a second range, or a third range; controlling operation of a valve in a full-freeze mode when the data measurement falls within the first range; controlling the operation of the valve of the turbine system in a semi-freeze mode when the data measurement falls within the second range; and controlling the operation of the valve of the turbine system in a full-operation mode when the data measurement falls within the third range.
Claims20
A valve system, comprising:
- a valve, comprising:
- a valve disk configured to restrict airflow when in a closed position and allow airflow when in an open position;
- and
- an actuator configured to move the valve disk based upon one or more commands;
- and
- a controller configured to provide the one or more commands to the actuator, wherein the controller is configured to:
- obtain a turbine system data measurement;
- determine which range of a first range, a second range, or a third range the turbine system data measurement falls within;
- provide the one or more commands to the actuator according to a full-freeze mode when the data measurement falls within the first range;
- provide the one or more commands to the actuator according to a semi-freeze mode when the data measurement falls within the second range;
- and
- provide the one or more commands to the actuator according to a full-operation mode when the data measurement falls within the third range;
- wherein the full-operation mode:
- enables provision of the one or more commands to the actuator at a rapid rate;
- enables actuation of the valve disk to a full open position, a full closed position, or both;
- or both;
- wherein the full-freeze mode:
- suspends provision of the one or more commands to the actuator for a pre-determined interval, such that no actuation of the valve disk occurs during the full-freeze mode;
- and
- wherein the semi-freeze mode:
- enables provision of the one or more commands to the actuator at a rate less than the rapid rate;
- enables actuation of the valve disk to less than the full open position, less than the full closed position, or both;
- or both.
20 more elements
A non-transitory, machine-readable medium, comprising machine-readable instructions to:
- obtain a turbine system data measurement;
- determine which range of a first range, a second range, or a third range the turbine system data measurement falls within;
- control operation of a valve of the turbine system in a full-freeze mode when the data measurement falls within the first range;
- control the operation of the valve of the turbine system in a semi-freeze mode when the data measurement falls within the second range;
- and
- control the operation of the valve of the turbine system in a full-operation mode when the data measurement falls within the third range;
- wherein the full-operation mode:
- enables operation of the valve at a rapid rate;
- enables operation of the valve to a full open position, a full closed position, or both;
- or both;
- wherein the full-freeze mode:
- suspends operation of the valve for a pre-determined interval, such that no actuation of the valve occurs during the full-freeze mode;
- and
- wherein the semi-freeze mode:
- enables operation of the valve at a rate less than the rapid rate;
- enables operation of the valve to less than the full open position, less than the full closed position, or both;
- or both.
14 more elements
A method, comprising:
- obtaining a turbine system data measurement;
- determining which range of a first range, a second range, or a third range the turbine system data measurement falls within;
- controlling operation of a valve of the turbine system in a full-freeze mode when the data measurement falls within the first range;
- controlling the operation of the valve of the turbine system in a semi-freeze mode when the data measurement falls within the second range;
- and
- controlling the operation of the valve of the turbine system in a full-operation mode when the data measurement falls within the third range;
- wherein the full-operation mode:
- enables operation of the valve at a rapid rate;
- enables operation of the valve to a full open position, a full closed position, or both;
- or both;
- wherein the full-freeze mode:
- suspends operation of the valve for a pre-determined interval, such that no actuation of the valve occurs during the full-freeze mode;
- and
- wherein the semi-freeze mode:
- enables operation of the valve at a rate less than the rapid rate;
- enables operation of the valve to less than the full open position, less than the full closed position, or both;
- or both.
14 more elements
Dependencies are inferred from the claim text.