用数值方法求解离心泵运行工况点

发布时间：2018-02-23 18:24

本文关键词： 离心泵工况点 MATLAB 三次样条插值法二分法　出处：《中国农村水利水电》2017年02期 　论文类型：期刊论文

【摘要】：正确确定水泵工况点是水泵优化选型、泵站优化设计以及泵站安全经济运行的必要条件。用离散点描述离心泵流量与扬程性能曲线,非离散点的水泵性能参数采用三次样条插值获得。根据水力学原理建立了求解离心泵单泵运行、并联运行和串联运行工况点方程组,给出了采用数值方法的二分法的计算步骤。提出了求解离心泵运行工况点的一种新方法。以某供水工程取水泵站为例,利用MATLAB编程求解,得到正常工作时4口井12台同型号潜水泵并联运行的工况点。算例表明提出的离心泵运行工况点数值计算方法是可行的。
[Abstract]:Determining the pump working point correctly is the necessary condition for the optimal selection of the pump, the optimal design of the pump station and the safe and economical operation of the pump station. The discrete points are used to describe the flow rate and lift performance curve of the centrifugal pump. The pump performance parameters of non-discrete points are obtained by cubic spline interpolation. According to the hydraulics principle, the equations of single pump operation, parallel operation and series operation of centrifugal pump are established. The calculation steps of dichotomy using numerical method are given. A new method to solve the operating point of centrifugal pump is proposed. Taking a water pumping station of a water supply project as an example, the solution is solved by MATLAB programming. The operating conditions of 12 submersible pumps of the same type in 4 wells in normal operation are obtained. The numerical calculation results show that the proposed numerical calculation method for the operating conditions of centrifugal pumps is feasible.
【作者单位】：西安理工大学西北旱区生态水利工程国家重点实验室培育基地;
【基金】：国家自然科学基金资助项目(51479160)
【分类号】：TV675

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