摘要
倒流防止器是市政供水管网防回流污染的重要设施,能严格限定管道中水单向流动并保护水质安全。进水和出水止回阀的紧闭性能是倒流防止器隔断安全性的重要指标之一。介绍了标准对倒流防止器止回阀紧闭性能的要求和检测方法,另外提出了两种检测方法,并探讨三种检测方法的优缺点和操作注意事项。
Backflow preventer is an important facility to prevent backflow pollution in municipal water supply network.It can be used to strictly limit the one-way flow of water in the pipeline and protect the safety of water quality.The drip tightness of inlet and outlet check valves is one of the important indexes for the safety of backflow preventer.In this paper,the standard requirements and detection methods for drip tightness of check valves of backflow preventer were introduced.In addition,two detection methods were presented,and the advantages and disadvantages of three detection methods and operation precautions were discussed.
作者
蒋威
Jiang Wei(National Quality Supervision and Inspection Center of Valve Products(Fujian),Quanzhou 362800,China)
出处
《化工设备与管道》
CAS
北大核心
2021年第6期68-71,共4页
Process Equipment & Piping
基金
福建省特种设备检验研究院科研项目(FJTJ2020002)。
关键词
倒流防止器
回流污染
止回阀
紧闭性能
检测
backflow preventer
backflow pollution
check valve
drip tightness
detection
