火电厂仪表取样管冬季防冻措施探讨

Discussion on Winter Antifreeze Measures for Instrument Sampling Pipes in Thermal Power Plants

冬季气温下降到0℃以下时,火力发电厂的仪表取样管道如果没有良好的防冻措施,将会造成取样管道内的介质凝固,轻则影响正常的参数测量,重则导致机组保护误动或者拒动。文章介绍了常见的几种仪表管道防冻措施以及常见的问题,以确保冬季仪表取样管道防冻工作正确开展。

When the temperature drops below 0℃in winter,if the instrument sampling pipeline in fossil-fuel power station does not have good antifreeze measures,the medium in the sampling pipeline will solidify,which may affect normal parameter measurement,or may cause the unit protection to misoperate or refuse to operate.This article introduces several common anti freezing measures and common problems for instrument pipelines to ensure the correct implementation of anti freezing work for instrument sampling pipelines in winter.