泵站出水流道模型水力损失的测试

Measurement for Hydraulic Loss of Outlet Conduit of Pumping Station

根据低扬程水泵装置的研究方法可以多样化的观念,提出了将泵站出水流道模型从水泵装置模型中分离出来单独进行水力损失测试的新方法,介绍了该方法所采用的测试装置、水力损失计算方法及误差分析等有关问题。与传统测试方法相比,该方法的特点是:以较少的费用、较短的周期获得准确的结果。对2个不同几何形状的出水流道模型进行了水力损失测试及比较,试验结果表明:出水流道的水力损失与其几何形状有非常密切的关系。

Based on the new theory of variety for researching a low head pump system, a new method to separate outlet conduit from pump system is put forward for measuring its hydraulic loss. Problems relative to the test device, losses calculation method and error analysis, etc. are illustrated. Compared with the traditional method, the new method has advantages of reducing expenses, shortening period and being much more accurate. The new method is applied to measure the hydraulic losses of two outlet conduits, the geometry shape of which are different. The test results signify that the hydraulic losses of outlet conduit are very sensitive to their geometry shapes.