吕梁横泉水库工业供水泵站优化设计与研究

Optimization Design and Development Research for Lyuliang Hengquan Reservoir Water Supply Pumping Station

目前国内工业供水设计中,对于自压输水工程处理供水压力不够的情况,通常的做法是建设加压泵站,并在泵站前建设进水池,该方法在泵站运行中偏于安全,但运行管理成本较大。结合吕梁横泉水库工业供水泵站设计要求,优化设计研究中提出了直接在管道上串接水泵,进行加压,无需建设进水池和增加调流调压阀。泵站运行中,小流量供水时采用自流,超过流量后加压,机组采用变频调节,逐步提高流速,这样不仅减少投资,而且运行管理较为方便,能够完全利用上游自流压力的剩余水头。针对泵前管道会出现真空导致爆管的问题,通过在管道沿线设置进排气阀来解决。经过已建成的38 km管线的现场测试结果表明,该设计方案能够达到系统设计的运行要求。

In the design of the current domestic industrial water supply,the most commonly used way to deal with water pressure shortage is to build pump station together with suction sump water supply. Though,such method tends to be safe,the costs of operation and management are greater. This study combined with the requirements of Hengquan Reservoir water supply pumping station and on the basis of successful optimization design research,put forward a method which was adding pump to water pipe directly without suction sump and regulating valve. In order to reduce investment,make management convenient and make full use of residual velocity head,small flow was transported by gravi-ty,only over flow was pumped up by the pump station,and pumps adopting variable frequency regulation and increasing the water velocity gradually. Air release valves were set along the pipes to avoid vacuum condition,which would lead to pipe explosion. According to the field test of the completed 38km pipeline results,it indicates that the design scheme can meet the demands of the system.