南水北调来水调入密云水库调蓄工程梯级泵站机组选型设计与研究

南水北调来水调入密云水库调蓄工程,通过沿京密引水渠建梯级泵站将南水北调来水调入密云水库,解决来水与北京市用水过程不匹配问题,提高供水可靠性。本文通过重点分析调蓄工程梯级泵站特点,理论和试验相结合地选择合理的超低扬程供水泵站泵型,选用合适的水力模型优化了流道设计,提高了泵站水力性能和泵站装置效率。研究成果可为类似调蓄工程超低扬程泵站设计提供参考。

Design and research on pump type selection for cascade pumping stations for Miyun Reservoir Regulation and Storage Project for Incoming Water from South-to-North Water Transfer Project

Miyun Reservoir Regulation and Storage Project for Incoming Water from South-to-North Water transfer Project conveys the incoming water from the South-to-North Water Transfer Project to Miyun Reservoir through the cascade pumping stations constructed along Beijing-Miyun Water Diversion Canal, so as to solve the problem from the mismatch between the incoming water and the process of water use in Beijing and enhance the reliability of water supply concerned. Through the analysis on the characteristics of the cascade pumping stations for the regulation and storage project, the pump types of the water supply pumping stations with super-low heads are reasonably selected on the basis of the combination of theory and experiment, and then the designs of the relevant flow passages are optimized with suitable hydraulic model, thus the hydraulic performances of the pumping stations and the efficiencies of the equipment therein are enhanced as well. The result from this research can provide references for design of the pumping station with super-low head for the similar regulation and storage project.