
The Design and Experiment of the Double-blade Sewage Pump Based on Statistical Regression Analysis
Dong-mei SONG, Xue-yin LIU, Xiao-ming CHEN, Dao-xing YE, Qi-yu TAN
The Design and Experiment of the Double-blade Sewage Pump Based on Statistical Regression Analysis
Impeller outlet diameter D 2, impeller outlet width b 2 and impeller inlet diameter Dj are selected, excellent hydraulic models of sewage pump are combined, the law of head coefficient λH, flow coefficient λQ, velocity coefficient λv changing with specific speed are obtained. The corresponding empirical formula are determined, and the double-blade sewage pump with high efficiency and good anti-clogging performance is designed. The full flow numerical simulation of the designed sewage pump is carried out by using CFX, the pressure and streamline distribution in the impeller are obtained. The efficiency of the rated flow point of the pump is 76.53%, the head is 14 meters, the efficiency is higher than the national standard 10%. The design method has some reference value for the hydraulic design of double-blade sewage pump.
double-blade sewage pump / hydraulic design / empirical coefficient / numerical simulation / experiment {{custom_keyword}} /
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