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Experimental Study on Hydraulic Torque of Guide Vane of Pump Turbine under Turbine Working Condition

Qifei Li, Guangxian Li, Hui Quan, Renben Wang, Zhengjie Zhang, Chaoben Zhao

Abstract


In order to analyze the magnitude and variation of water torque of the guide vane of the pump turbine under turbine conditions, a pump turbine model of a pumped storage power station in China was used to process the movable guide vane shaft based on electrical stress analysis method, and the water torque tests of synchronous guide vane and asynchronous guide vane were conducted respectively. Analysis of the test results shows that: when the asynchronous guide vane is not used, the change of the guide vane water moment factor of all the guide vanes tested keeps consistent with the increase of the guide vane opening, and the direction of the water moment gradually turns from the guide vane closing direction to the guide vane opening direction;  After setting 10 # guide vane as asynchronous guide vane, when the difference between the opening of asynchronous guide vane and the opening of synchronous guide vane is less than 16.4%, the water torque factor of the measured guide vane tends to be evenly distributed. when the difference is greater than 16.4%, the water torque increases sharply with the increase of the opening value, and the water torque factor of different guide vanes differs greatly.  


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References


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Copyright (c) 2019 Qifei Li, Guangxian Li, Hui Quan, Renben Wang, Zhengjie Zhang, Chaoben Zhao

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