CAVITATIONS MONITORING AND DIAGNOSIS OF HYDROPOWER TURBINE ON LINE BASED ON VIBRATION AND ULTRASOUND ACOUSTIC
The cavitations erosion in hydropower turbines is always a restrict factor of their profitability, which leads to the requirements of periodic inspections and repairs.Detection of cavitations in hydropower turbines with adequate and accurate methods has always been the main goal for hydro-generators researchers in order to diminish or even eliminate its damaging consequences.In the present paper, A multiplex approach was introduced for cavitations detection in which vibratory & ultrasonic sensors are employed and mounted at the lower guide gearing in the direction +X and -Y on the draft tube manhole door and on the head cover etc.A case study of cavitations detection in a large Kaplan turbine is performed in order to detect the cavitations occurrence and to quantify its aggressiveness.Such analysis allows identifying the operating conditions associated with a high erosion risk, which may be taken into account for optimizing turbine operation in order to extend inspections and repairs interval.
Cavitations Monitoring Diagnosis Vibration Ultrasound
SU-YI LIU SHU-QING WANG
The Electronics and Information Department of Wuhan University of Science & Engineering, Wuhan 43007 School of Electrical and Electronic Engineering of Hubei University of Technology, Wuhan 430073, Chi
国际会议
2007 International Conference on Machine Learning and Cybernetics(IEEE第六届机器学习与控制论国际会议)
香港
英文
2976-2981
2007-08-19（万方平台首次上网日期，不代表论文的发表时间）