Design of Medium High-lift Motor and Pump of Suining Second Pumping Station in the East Line of South-to-North Water Diversion Project

Suining Second Pumping Station is a water pump station of the fifth step,which is the first phase of the east line of South-to-North Water Diversion Project in Jiangsu Province.It is a large project of first-class and medium high-lift,and complex under running conditions and difficult in technology,and its characteristic parameters often change in large scale.In this article,combining the project characteristics,through comparing the hydraulic model,selecting the vane adjustment method and calculating the conduit type and drying-up method,the final selection of the vane mixed-flow pump was the pumping station type,which matched the elbow-shaped inlet conduit and siphon outlet conduit.It could increase capacity of the station,enhance the adjusting range of water pump,optimize the running mode,and provide the reference value to the construction of South-to-North Water Transfer Project and the coming running of the station.