Study on Energy Characteristics and Flow Characteristics of Return Water and Exhaust Pipe in Pumped Storage Power Station
When the pumped storage power station is at the end of the phase adjustment condition,mechanical vibration often occurs during the exhaust of the high-pressure gas in the runner chamber,causing damage to the plant equipment.Based on the model of the return and exhaust system of a pumped storage power station,this paper uses the fluid calculation software Ansys Fluent to study the flow field characteristics of the exhaust system,the energy characteristics and flow characteristics of the flow field in the pipeline with the diameter of the main pipe of the return and exhaust system of the pumped storage power station as a single variable.The changes of gas motion characteristics of the exhaust main pipe at different diameters are revealed,and the gas motion characteristic parameters of each section of the flow field are analyzed to obtain the energy change characteristics of the gas along the pipeline.The results show that with the increase of diameter,the energy lost by gas motion gradually increases.The exhaust flow does not increase all the time with the increase of the pipe diameter,and when the diameter of the main pipe increases to a certain value,the pipe flow rate will not change significantly.
pumped storage power stationreturn water exhaust systemmain pipe diameterenergy characteristicsnumerical simulation
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