Flow Conduit Optimization and Model Test Analysis of Pump Device in Beitan Pumping Station
In order to reduce the hydraulic loss of the inlet and outlet conduits and ensure the safety and stability of the pumping station operation,this paper applied numerical simulation technique to optimize the geometry of the elbow-inlet conduit and the low-hump outlet conduit of the Beitan pumping station.By comparing the hydraulic characteristics of the flow conduits with different sizing schemes,the optimized scheme was finally determined and a model test study was conducted on the pump device with the optimal combination of schemes.The results show that the flow uniformity at the outlet of the elbow-shaped inlet conduit is improved by 0.1%,and the hydraulic loss of the low-humped outlet conduit is reduced by 23.91%for the optimized scheme.The maximum efficiency of the model pump device exceeded 72.00%at different impeller blade placement angles(-4°,-2°,0°,+2° and +4°),and the maximum efficiency of the pump device was 74.97%at the impeller blade placement angle of +2°.The optimized pump device has high hydraulic efficiency and operational stability,which can provide reference for the optimization of flow conduit in the same type of pumping stations.
NETL
NSTL
万方数据
维普
