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涧沟泵站泵装置模型试验研究
周铭瑞1, 周秉南2, 刘健峰1, 陆伟刚1
1.扬州大学 水利科学与工程学院;2.宁波市水利水电规划设计研究院
摘要:
为进一步了解具有蜗壳式出水流道轴流泵装置的外特性,确保涧沟泵站完建后可以安全稳定运行,以模型试验为基础,研究了涧沟泵站泵装置的水力性能,并根据试验结果优选涧沟泵站运行方案。试验数据表明,该泵站以叶片角度-2°运行时,泵装置可以达到最高效率71.4%。流量扬程均与设计流量、扬程相近,可作为泵站未来运行时采用的角度。且随着扬程逐步增大,流量降低幅度较小,符合排涝泵站需长时间大流量排涝的经济性。该泵装置气蚀性能符合设计要求,叶片角度为-4°时,飞逸转速达到最高值,小于两倍的额定转速,飞逸特性优良。综上,此试验泵装置作为排涝泵装置时各项性能较为优异,具备深入研究开发的价值。
关键词:  立式轴流泵  蜗壳式出水流道  模型试验  泵装置
DOI:
分类号:TV675???????
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
Model test research on pump device of Jiangou pump station
ZHOU Mingrui1, ZHOU Binnan2, LIU Jianfeng1, LU Weigang1
1.College of Hydraulic Science and Engineering,Yangzhou University;2.Ningbo Water Conservancy Hydropower Planning and Design and Research Institute
Abstract:
ABSTRACT: In order to further study the external characteristics of axial flow pump device with volute outlet channel and ensure the safe and stable operation of Jiangou pump station after construction. Based on the model test, the hydraulic performance of Jiangou pump station is studied, and the operation scheme of Jiangou pump station is optimized according to the results of test. Some relevant data show that when the pump station operates with the blade angle of - 2 °, the pump device could operate with the highest efficiency of 71.4% when the flow and head are similar to the design flow and design head, which can be used as the design angle for the future operation of the pump station. And with the gradual increase of head, the flow decreases gently which is in line with the economy of large flow drainage for a long time. So the cavitation performance of the pump device meets the design requirements. When the blade angle is - 4 °, the runaway speed reaches the highest value which is less than twice the rated speed, and the runaway characteristics are excellent at this time. In conclusion, the performance of the pump device tested is relatively excellent as a drainage pump device which has the great value of in-depth research and development.
Key words:  Vertical axial flow pump  Volute outlet channel  model test  pump unit
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