倒流防止器止回阀紧闭性能检测方法探讨  

Discussion of Detecting Method for Tightness Characteristic of Check Valve in Backflow Preventer

作　　者：蒋威 Jiang Wei(National Quality Supervision and Inspection Center of Valve Products(Fujian),Quanzhou 362800,China)

机构地区：[1]国家阀门产品质量监督检验中心(福建),福建泉州362800

出　　处：《化工设备与管道》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)。

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.

关 键 词：倒流防止器 回流污染 止回阀 紧闭性能 检测 

分 类 号：TQ050.2[化学工程] TH122[机械工程—机械设计及理论]