DETECTION METHOD OF SENSOR IN GAS TURBINE

摘要

Disclosed is a detection method of a sensor in a gas turbine, comprising: adopting a pressure sensor (88) to measure a pushing force (F) of a push rod (10); measuring a first rotational angle of a guide vane (70) at the position where a first angle sensor is mounted; measuring a second rotational angle of the guide vane (70) at the position where a second angle sensor is mounted; obtaining a maximum measured rotational angle deviation from the absolute value of a difference value between the first rotational angle and the second rotational angle; calculating a maximum calculated deviation from the pushing force (F) of the push rod (10), i.e. max”±=F×K, wherein F represents the pushing force (F) of the push rod (10) and K is a geometric constant of a geometric parameter related to a guide vane driving mechanism; calculating the absolute value of a difference value between the maximum measured rotational angle deviation and the maximum calculated rotational angle deviation, and if the absolute value is less than or equal to a standard value, determining that the angle sensors and the pressure sensor (88) have appropriate measurement accuracy; and if the absolute value is greater than the standard value, determining that the angle sensors and/or the pressure sensor (88) require a calibration.