METHODS AND APPARATUS OF ASSESSING A TEST OF A SOLENOID VALVE VIA A POSITIONER

METHODS AND APPARATUS OF ASSESSING A TEST OF A SOLENOID VALVE VIA A POSITIONER

Methods and apparatus of assessing a test of a solenoid valve via a positioner are disclosed. An example apparatus includes a solenoid valve to enable an actuator to close an emergency valve and a valve positioner fluidly and communicatively coupled to the solenoid valve. The valve positioner is to...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: JUNK, Kenneth, W, JELKEN, Shannon, E
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACTUATING-FLOATS
BLASTING
COCKS
DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
FLUID-PRESSURE ACTUATORS
FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HYDRAULICS OR PNEUMATICS IN GENERAL
LIGHTING
MECHANICAL ENGINEERING
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Beschreibung
Zusammenfassung:Methods and apparatus of assessing a test of a solenoid valve via a positioner are disclosed. An example apparatus includes a solenoid valve to enable an actuator to close an emergency valve and a valve positioner fluidly and communicatively coupled to the solenoid valve. The valve positioner is to instruct the solenoid valve to transition the solenoid valve from a first state to a second state. The valve positioner is to monitor a pressure change of a pressure chamber of the actuator in fluid communication with the solenoid valve relative to an initial pressure for a monitoring duration. The valve positioner is to identify a maximum pressure change during the monitoring duration and determine a ready state of the solenoid valve when the maximum pressure change is greater than a minimum trip value and the pressure change at a monitoring end time is less than a maximum reset value.