基于Python的水泵稳定工况点优化求解方法研究

Research on Optimization Method for Stable Operating Point of Water Pump Based on Python

水泵稳定工况点的确定对于提高供水泵站的运行性能和效率至关重要。基于Python编程语言开发一款计算水泵稳定工况点的软件,充分考虑水泵进、出水段管路水头损失,优化水泵稳定工况点数学模型。根据供水泵站已知水力参数,计算不同管段的管路水头损失参数和水泵特性曲线参数,绘制管路特性曲线、水泵特性曲线和流量—效率曲线,快速确定不同地形扬程的水泵稳定工况点。以引冶入昌供水工程为例,进行软件的实际应用。应用情况表明:初选的KQSN350-M6型水泵在地形扬程为52.6 m时最大工作扬程为81.53 m,没有达到设计扬程83.00 m;重新选择的SD250-600A型水泵在地形扬程为52.6 m时最大工作扬程为83.96 m,满足设计扬程要求。

The determination of stable operating points for water pumps is crucial for improving the operational performance and efficiency of water supply pumping stations.Based on Python programming language,a software was developed to calculate the stable working condition point of the pump,and the mathematical model of the stable working condition point of the pump was optimized by fully considering the head loss of the pipeline in the inlet and outlet sections of the pump.According to the known hydraulic parameters of the water supply pump station,the pipeline head loss parameters and pump characteristic curve parameters of different pipe sections were calculated,the pipeline characteristic curve,the pump characteristic curve and the flow-efficiency curve were drawn,and the pump stable working conditions of different terrain heads were quickly determined.Taking the Yinye to Chang Water Supply Project as an example,the practical application of the software was carried out.The application situation shows that when the KQSN350-M6 pump is located at the topographic lift of 52.6 m,the maximum working lift is 81.53 m,but it still does not meet the requirements of the design lift of 83.00 m.When the reselected SD250-600A pump is located at the topographic lift of 52.6 m,the maximum working lift is 83.96 m,which meets the design lift requirements.