FLUID CONTROL VALVE WITH SENSOR
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United States of America Patent
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Issued Date -
Jan 4, 2018
app pub date -
Jun 22, 2017
filing date -
Jun 29, 2016
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Abstract
A fluid control valve includes a valve main body and a vibration sensor. The valve main body has an actuator section and a valve section. The sensor detects vibration generated in the valve main body. The vibration is generated by a water hammer phenomenon. The water hammer phenomenon generates impact when the valve element comes into contact with the valve seat and no fluid leaks between a valve element and a valve seat. The fluid control valve further includes a controller to execute an abnormality determining program and determines the valve main body to be normal when the sensor detects the vibration with an amplitude exceeding the predetermined threshold, while determines the valve main body to be abnormal when the sensor does not detect the vibration with an amplitude exceeding the predetermined threshold.
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