摘要
随着社会的发展,长距离供水工程越来越多,人们对长距离供水的过渡过程计算也愈加重视。重力流输水管道因无水泵加压,故无停泵水锤危害。但是,其管线末端阀门关闭过快也会导致输水系统出现很高的水锤压力,在有多重起伏管线的高点容易产生断流,造成弥合水锤,严重影响管线及阀门等设备的安全。本文结合工程实例,对长距离重力流供水管线末端阀门关闭的过渡过程进行分析,并提出相应的防护措施。
With the development of society,more and more long-distance water supply projects,people pay more attention to the calculation of long-distance water supply transition process.Because there is no pump pressurization in gravity flow pipeline,there is no water hammer hazard of pump stop.However,if the valve at the end of the pipeline is closed too fast,the water hammer pressure in the water delivery system will be very high,and the high point of the pipeline with multiple ups and downs is easy to produce flow interruption,resulting in the closure of water hammer,seriously affecting the safety of pipelines and valves and other equipment.This paper analyzed the transition process of closing the valve at the end of the long distance gravity flow water supply line and put forward the corresponding protection measures.
作者
卜新魁
PU Xinkui(Jilin Province Water Resource and Hydropower Consultative Company,Changchun Jilin 100012)
出处
《河南科技》
2020年第31期67-69,共3页
Henan Science and Technology
关键词
长距离重力流供水
水击泄放阀
水力过渡过程
long distance gravity flow water supply
water hammer relief valve
hydraulic transition process