Emergency shutdown valve diagnostics using a pressure transmitter
First Claim
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1. A method in an industrial process of diagnosing an emergency shutdown valve actuated by a source of pressurized fluid, the method comprising:
- controlling the source of pressurized fluid;
measuring a plurality of pressures related to the pressurized fluid;
storing the plurality of measurements in a pressure transmitter; and
comparing the pressure measurements with at least one known pressure signature to generate diagnostic information relative to the emergency shutdown valve.
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Abstract
An emergency shut down valve is operated using a pressurized fluid. A pressure transmitter is operably coupleable to the source of pressurized fluid and is configured to receive an indication relative to emergency shut down valve diagnostics. The pressure transmitter responsively captures pressure readings relative to the source of pressurized fluid for a selected duration. In some embodiments, the pressure transmitter may perform diagnostics upon the captured data. In other embodiments, the captured data is provided to an external device for analysis.
37 Citations
34 Claims
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1. A method in an industrial process of diagnosing an emergency shutdown valve actuated by a source of pressurized fluid, the method comprising:
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controlling the source of pressurized fluid;
measuring a plurality of pressures related to the pressurized fluid;
storing the plurality of measurements in a pressure transmitter; and
comparing the pressure measurements with at least one known pressure signature to generate diagnostic information relative to the emergency shutdown valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A pressure transmitter comprising:
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a pressure sensor coupleable to a source of pressurized fluid operably coupled to an emergency shut down valve;
an analog-to-digital converter coupled to the pressure sensor and providing a digital output; and
a controller operably coupled to the analog-to-digital converter, the controller adapted to receive an indication relative to a diagnostic of the emergency shutdown valve and wherein the controller is adapted to store a plurality of digital values from the analog-to-digital converter digital output after receipt of the diagnostic indication. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. An emergency shutdown valve system comprising:
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a source of pressurized fluid;
a valve coupled to the source of pressurized fluid and having a valve output that is selectable based upon an energization signal; and
an emergency shutdown valve operably coupled to the valve output; and
means for diagnosing operation of the emergency shutdown valve.
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34. A method of diagnosing operation of an ESD valve system driven by an applied fluid pressure, the method comprising:
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measuring the applied pressure with a pressure transmitter; and
responsively diagnosing operation of the ESD valve system with the pressure transmitter
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Specification