USB端口通讯机制下的安全阀在线校验系统

介绍了安全阀在线校验技术的现状 ,针对现有安全阀在线校验技术和装置存在的问题 ,提出一种利用计算机USB端口进行远距离安全阀在线校验的方法 ,并开发了相应的在线校验装置。实践证明与已有在线检测技术和装备相比 ,该系统装备集成程度更高 ,具有更加灵活的便携移动特性 ,适用于多种在线校验场合。为了与国家标准保持一致 ,在新校验系统中增加了阀杆位移的自动测量 ,与压力检测配合作为安全阀开启压力的判定依据。

A new on-line testing system of safety valves with USB mechanism

The survey of a technique for on-line testing of safety valves is described. A new technique using USB port for transmitting data for on-line testing is proposed. The equipment of the technique is developed and has been proved the ability adapting to various fields with higher portability and mobility.Moreover, the micro-distance of valve stem during testing was also detected and used as judgement as valve opening pressure with pressure data.