不同型式贯流泵装置结构特点与水力特性分析

Structural Features and Hydraulic Performances Analysis of Various Tubular Pumping Systems

在保持水泵模型不变的情况下,选择3座典型的已建贯流泵站的进出水流道设计,组成3种不同型式的贯流泵装置,用数值分析方法研究了装置的水力特性。结果表明,贯流泵装置的水力特性与进出水流道型线设计密切相关,所研究的3种贯流泵装置最优效率点差值达10.48%。出水流道的水力损失是影响水泵装置效率的关键因素,应针对不同型式贯流泵装置结构特点,开展出水流道的水力设计优化。

Keeping the pump model unchanged, the typical design parameters of suction boxes and discharge passages of three pumping stations existed are selected to constitute 3 different tubular pumping systems, and numerical analysis method is adopted to investigated the hydraulic performances of pumping systems. The results show that the hydraulic performances of tubular pumping system are closely related with the design of suction box and discharge passage＇s shape and size, and the maximum efficiency difference in best efficiency point reaches to 10.48%. The hydraulic loss of discharge passage is the key factor affecting pumping system efficiency, and optimal hydraulic design of discharge passage should be carried out depending on the different structural features of various tubular pumping systems.