大型灌排泵站改造应用研究

我国拥有数量庞大的灌排泵站,近年来特别是大中型泵站的发展已经成为我国灌排水网络的骨干和支柱工程。但随着在建和新建大型泵站中水泵单机功率的不断提升,能耗过高和运行稳定性的问题日益突出。单级双吸离心泵是我国灌排泵站的一种常见泵型,以宁夏回族自治区固海扬水工程白府都泵站更新改造工程中的单级双吸离心泵为研究对象,分析了该泵的运行中存在的问题,并给出了改进的叶轮优化方案,结果表明相对于传统的双吸式离心泵,采用交替加载与V形交错技术设计得到的双吸离心泵最明显的优势是具有高效区宽、压力脉动低的优点。本文丰富了单机双吸离心泵的改造设计方法,对未来泵站改造双吸离心泵具有一定的借鉴意义。

Research on the Application of Large-scale Irrigation and Drainage Pump Station

China has a large number of irrigation and drainage pump stations.In recent years,the development of large and medium-sized pumping stations has become the main part of China's irrigation and drainage networks.However,with the continuous improvement of the power of the pump in the large-scale pumping station under construction,the problem of excessive energy consumption and operational stability has become increasingly prominent.Single-stage double-suction centrifugal pump is a common pump type in irrigation and drainage pumping station.In this paper,a single-stage double-suction centrifugal pump is analyzed,which is used in the renovation project of Baifudu Pumping Station of Guhai Yangshui Project in Ningxia.Results show that the most obvious advantage of the double-suction centrifugal pump designed by blade loading distributions and V-shaped staggering technology compared to the traditional type is it has a wider high efficiency zone and lower pressure pulsation.The result also enriches the design and modification method of single-machine double-suction centrifugal pump,which has certain reference significance for the future pump station reconstruction double-suction centrifugal pump.