Hydraulic design standardization for inlet and outlet conduit of tubular pump system with front-positioned shaft
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Abstract:
Learning from the successful experience of hydraulic design standardization of water turbine drafttube, the excellent tubular pump system with front-positioned shaft are used for more and better in the pumping station with low head and extra low head. Therefore, the standardization of hydraulic design for conduits of tubular pump system with front-positioned shaft has been premeditated in depth. The statistical rules of conduit sizes of the tubular pump with front-positioned shaft are analyzed, and the series of hydraulic design schemes for the inlet and outlet conduits are reasonably graded. Taking the shaft width and the nominal average velocity of the pump as key parameters, 24 schemes of hydraulic design standardization of the inlet conduit are obtained. Furthermore, 17 schemes of hydraulic design standardization of the outlet conduit are obtained by taking the outlet section width of the outlet conduit and the nominal average velocity of the pump as key parameters. According to the results of the optimal hydraulic design calculation, the hydraulic performances of the 24 inlet conduit schemes and the 17 outlet conduit schemes are excellent.The hydraulic design standardization for the inlet and out let conduit of tubular pump system with the front-positioned shaft is studied for the first time at home and abroad, and it is of great significance to improve the design level of pumping stations with low head.
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