摘要
为减轻分布式泵群停电产生的负水锤对供水系统的危害,提出了一种单向塔和空气阀联合防护的方案,明确了单向塔的防护效果,给出了主管集中段设置空气阀的基本公式,并以坦桑尼亚城市供水工程为研究对象,通过数值模拟的方法,验证了其合理性。研究结果表明:单向塔和空气阀的联合防护相较于单一的单向塔防护,效果更好,可以大幅减少工程造价;单向塔直径和连接管直径均需结合实际工程进行参数优选。
To reduce the damage to a water supply system caused by negative water hammers that occur in its distributed pump group after power outage,a new joint protection scheme using a one-way tower and an air valve is described.The effect of one-way tower protection is clarified and a basic formula for setting the air valve in a main pipe concentration section is presented.This scheme is verified through numerical simulations in a case study of the urban water supply project in Tanzania.The results show that the protection by adopting both a one-way tower and an air valve is more effective than that adopting a one-way tower alone,and it reduces the project cost greatly.The diameters of the one-way tower and its connecting pipes should be optimized according to the conditions of a practical project.
作者
仇为鑫
潘益斌
张健
QIU Weixin;PAN Yibin;ZHANG Jian(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210000;Institute of Hydropower and Water Conservancy Engineering,Huadong Engineering Corporation Limited,Hangzhou 311122)
出处
《水力发电学报》
CSCD
北大核心
2022年第3期101-112,共12页
Journal of Hydroelectric Engineering
基金
国家重点研发计划资助(2016YFC0401810)
国家自然科学基金青年科学基金项目(51709087)
中央高校基本科研业务费专项资金资助(2018B55514)。
关键词
复杂供水系统
分布式
负水锤
单向塔
空气阀
complex water supply systems
distributed pump group
negative water hammer
one-way tower
air valve
