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结合上海北横泾双向潜水贯流泵,进行了模型泵正、反向能量和振动试验研究。结果表明:正向工况水力损失比反向工况偏大,效率比反向工况要低一些;高扬程下模型泵容易发生空化,流态出现紊乱,装置振动又加剧了空化形成和汽泡溃灭,导致水泵效率有所下降,低扬程(H=1~2 m)下双向潜水贯流模型泵具有良好的水力性能;正向工况模型最高效率区为59%~60%,反向工况模型最高效率区为60%~62%,且在高效率区附近,试验装置振动平稳,振幅较小,适用于低扬程双向泵站。
Combined with the Shanghai North Hengjing two-way submersible tubular pump, the model pump positive and negative energy and vibration tests were carried out. The results show that the hydraulic loss in the positive working condition is larger than that in the reverse working condition, and the efficiency is lower than that in the reverse working condition. The model pump is prone to cavitation and turbulence in the high lift, and the vibration of the equipment aggravates the formation of cavitation And bubble collapse, resulting in the pump efficiency decreased, low head (H = 1 ~ 2 m) under the two-way submersible tubular model pump has a good hydraulic performance; positive working model of the highest efficiency of 59% to 60% , The reverse efficiency model maximum efficiency area of 60% to 62%, and near the high efficiency area, the test device vibration smooth, small amplitude, suitable for low lift two-way pumping station.