长距离供水系统水力振动特性和减振措施研究综述

Reviews on hydraulic vibration characteristics and vibration reduction measures of long-distance water supply system

为保证长距离供水系统的稳定运行,分别针对新型分段低压供水系统和常用的泵站加压供水系统,归纳总结已有的理论分析、试验研究和数值模拟研究成果,分析了长距离供水系统的水力振动特性,并探讨了相应的减振措施。认为在长距离供水系统的布置设计和运行控制中,应充分考虑有压供水系统内水体的高阶振动特性,结合动态系统分析理论,开展必要的水力振动特性及减振措施分析,以保证供水的可靠性。

To ensure stable operation of the long-distance water supply system, the existing theoretical discussions, experimental researches and numerical simulations of the stepped low-pressure water supply system and the commonly used water-pumping system are summarized. The hydraulic vibration characteristics and methods of the long-distance water supply system are comprehensively analyzed, and the relevant vibration reduction measures are discussed. The results indicate that, for the layout, design and operation of the long-distance water supply system, high-order vibration characteristics of flows in the pressurized water supply system should be fully considered. The analysis of hydraulic vibration characteristics and vibration reduction measures should be carried out by means of the analytical theories of dynamic system, so as to guarantee the reliable operation of the long-distance water supply system.