Method for measuring water leakage of guide vane of pump turbine

• Main Authors: ZHANG LITIAN, WANG BOTIAN, CHANG TIANXU, YAO ZHIWEI, WANG PENG, LI MING, FAN WENJIE, LIU ZHIQI, QIAN ZHIQIANG, GUAN XUEMEI, LIU CHUNXIANG, HUANG LINGYU, ZHENG YIMING, YANG CHENCHANG, LIU WEIQIANG, LI BONAN, JI SHOUYUAN, LI YUHAO, LI CHUANGXIN, ZHAO LEI, XUE JIAXIN
• Format: Patent
• Language: Chinese; English
• Published: 28.03.2023
• Subjects: MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention relates to a method for measuring the water leakage amount of a guide vane of a pump turbine, which solves the technical problems of inaccuracy and complex operation process of the existing method for measuring the water leakage amount of the guide vane of the pump turbine, and comprises the following steps of: selecting an equal-diameter inclined pipe section which is far higher than the lower reservoir water level, and measuring the water leakage amount of the guide vane of the pump turbine through a pressure measuring pipeline laid on a pressure steel pipe during installation of a unit and a high-precision pressure gauge; under the two states of opening and closing of a ball valve, the water level of an inclined pipe section of a pressure steel pipe, the inlet pressure of a draft tube and required time are obtained by adopting two modes of manual reading and automatic collection of a unit state monitoring device which is installed on a test unit, and the nominal water leakage of a guide vane