黄金坝泵站平面S形贯流泵装置物理模型试验分析

Experimental Research on the Physical Models of S Tubular Pump of Huangjinba Pumping Station

平面S形贯流泵装置是特低扬程泵站的重要装置形式之一,以黄金坝泵站为研究对象,通过对该贯流泵装置S形弯管和流道的优化设计,达到了提高泵装置能量性能的目的。经物理模型试验结果表明,在叶片安放角为2°时,平面S形轴伸贯流泵装置的最高效率达78.35%,此时泵装置的流量为244.21 L/s,装置扬程为2.003 m。在扬程1.5~2.0m范围内,泵装置的效率均在73%以上,泵装置高效区运行的流量范围较大。该优化方法为后续S形贯流泵装置的优化设计提供了有效的参考。

The planar S-shaped shaft extension pumping system is an important device for the low-lift pumping station,and the existing planar S-shaped shaft secondary pump device is inefficient. By optimizing the traditional S-shaped elbow and flow conduits,the efficiency of the planar S-shaped shaft extension pumping system can be improved. To obtain the performance data of the pumping system,the pumping system model is tested on a high-precision hydro-mechanical test bench in the five different blade arrangement angles. The results show that,the highest efficiency of S-shaped shaft extension tubular pumping device is 78.35% at the blade angle +2°. At this moment,the flow rate of the pumping device is 244.21 L/s,and the head is 2.003 m. Within the head range of 1.5 ~ 2.0 m,the efficiency of the pump device is above73%.