| 利用规划求解法确定水泵工况点 |
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| 引用本文： | 姚青云,刘莉莉. 利用规划求解法确定水泵工况点[J]. 中国农村水利水电, 2011, 0(9) |
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| 作者姓名： | 姚青云 刘莉莉 |
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| 作者单位： | 1. 宁夏大学土木与水利工程学院,银川750021／旱区现代农业水资源高效利用教育部工程研究中心,银川750021
2. 宁夏大学土木与水利工程学院,银川,750021 |
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| 摘 要： | 利用Excel中的规划求解法的基本功能,解决了水泵工况点的确定问题。首先用抛物线方程H=A1＋B1Q＋C1Q2表示泵流量与扬程曲线,方程H需=H净＋h损表示水泵装置的需要扬程曲线。然后根据在水泵工况点水泵的扬程H与需要扬程H需相等这一理论,给出流量的初值,并分别写出水泵扬程H和需要扬程H需与流量Q之间的计算公式,运用Excel计算功能,分别计算出水泵的扬程和需要扬程。利用此方法和水泵工况点确定的相关理论,准确、快速地求解各类复杂条件下水泵的工况点。这种方法与传统的图解法、数解法相比,具有快捷、精确等优点。
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| 关 键 词： | 水泵工况点 规划求解法 流量扬程曲线 |
The Use of the Programming Solver to Determine the Pump Operation Points |
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| YAO Qing-yun,,LIU Li-li. The Use of the Programming Solver to Determine the Pump Operation Points[J]. China Rural Water and Hydropower, 2011, 0(9) |
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| Authors: | YAO Qing-yun LIU Li-li |
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| Affiliation: | YAO Qing-yun1,2,LIU Li-li1(1.Civil and Hydraulic Engineering Institute,Ningxia University,Yinchuan 750021,China,2.Arid Regions in Modern Agricultural Efficient Utilization of Water Resources Engineering Research Center,Ministry of Education,China) |
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| Abstract: | By using the basic function of programming solve method in Excel,this paper solves the problem of how to decide operating points of pumps.First,Parabola equation H=A1+B1 Q+C1 Q2 is used to show the flow-lift curve,equation H=Hst+hloss is used to show the need head curve of pump system.For the operating points of pumps,the head H of pump is equal to need head H.According to this theory,first the initial value of the flux is given and the calculating function of Excel is used,and then the computational formul... |
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| Keywords: | operating points of pumps programming solver flow-lift curve |
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