Electric valve on-line alarm system

The utility model discloses an electric valve on-line alarm system, which comprises an electric valve actuator and a regulating valve, the electric valve actuator is connected with the regulating valve, a limiter and a servo motor are arranged in the electric valve actuator, the servo motor is connected with an external power supply through a relay, the limiter and the relay are both electrically connected with an electric valve monitoring terminal, and the electric valve monitoring terminal is electrically connected with the regulating valve. The electrically operated valve monitoring terminal is detachably arranged on the electrically operated valve actuator, and the electrically operated valve monitoring terminal is in communication connection with the remote monitoring host and the mobile terminal. According to the utility model, the opening or closing state of the electrically operated valve can be monitored in real time, when the valve is opened or closed abnormally, the power supply of the servo motor