全面腐蚀控制
全麵腐蝕控製
전면부식공제
TOTAL CORROSION CONTROL
2014年
9期
82-87
,共6页
杂散电流%交流电密度%排流保护%固态去耦合器
雜散電流%交流電密度%排流保護%固態去耦閤器
잡산전류%교류전밀도%배류보호%고태거우합기
stray current%alternating current density%discharge protection%solid state to coupler
杂散电流是指在管道周围土壤环境中漫流的一种大小、方向都不固定的电流,这种电流对金属管道的腐蚀称为杂散电流腐蚀,属于电解腐蚀范畴。杂散电流在管道中的流动会加速管道的腐蚀,对管道的安全性产生极大的影响。有杂散电流干扰的管道中,需要对管道实施排流保护,排除管道中的杂散电流。而杂散电流的排流工程是否合理充分,则需要应用相应的检测手段来测定。本文是在已经采取杂散电流排流保护的管道上,通过测量管道上的阴保电位、交流电压和交流电密度来判定管道的杂散电流排流情况。
雜散電流是指在管道週圍土壤環境中漫流的一種大小、方嚮都不固定的電流,這種電流對金屬管道的腐蝕稱為雜散電流腐蝕,屬于電解腐蝕範疇。雜散電流在管道中的流動會加速管道的腐蝕,對管道的安全性產生極大的影響。有雜散電流榦擾的管道中,需要對管道實施排流保護,排除管道中的雜散電流。而雜散電流的排流工程是否閤理充分,則需要應用相應的檢測手段來測定。本文是在已經採取雜散電流排流保護的管道上,通過測量管道上的陰保電位、交流電壓和交流電密度來判定管道的雜散電流排流情況。
잡산전류시지재관도주위토양배경중만류적일충대소、방향도불고정적전류,저충전류대금속관도적부식칭위잡산전류부식,속우전해부식범주。잡산전류재관도중적류동회가속관도적부식,대관도적안전성산생겁대적영향。유잡산전류간우적관도중,수요대관도실시배류보호,배제관도중적잡산전류。이잡산전류적배류공정시부합리충분,칙수요응용상응적검측수단래측정。본문시재이경채취잡산전류배류보호적관도상,통과측량관도상적음보전위、교류전압화교류전밀도래판정관도적잡산전류배류정황。
Stray current refers to a size, direction of flow in the soil around the pipeline in the current environment is not fixed, the corrosion of the metal pipeline this current is known as the stray current corrosion, which belongs to the category of electrolytic corrosion. The flow of stray current in the pipe can accelerate the corrosion of pipeline, greatly influence the safety of pipeline. Pipeline stray current interference, the need to implement drainage protection of pipeline, excluding the stray current. The stray current drainage engineering is reasonable enough, you need to apply a corresponding detection method to determine. This paper is in the pipeline stray current has taken discharging protection, by measuring the pipeline cathodic protection potential, the AC voltage and current density to determine the stray current drainage conditions.