Valve leakage detection system and method based on ultrasonic detection

The invention discloses a valve leakage detection system and method based on ultrasonic detection, and belongs to the technical field of valve leakage detection. The method comprises the steps that S10, ultrasonic waves are emitted into the valve through an ultrasonic detector, at the determined moment, ultrasonic signals reflected by the surface of the valve are received through the ultrasonic detector, the received ultrasonic signals are processed, and the intensity conditions of all positions of the valve are analyzed according to the processing result; s20, whether the leakage phenomenon occurs at all positions of the valve or not is judged; s30, predicting a leakage coefficient of a position where no leakage phenomenon occurs on the surface of the valve; and S40, the welding condition of the valve is determined. In the process of predicting the strength coefficient, the influence of deposits on the calculation accuracy of the strength coefficient is eliminated, it is guaranteed that the calculation resul