当代化工
噹代化工
당대화공
CONTEMPORARY CHEMICAL INDUSTRY
2014年
3期
397-398
,共2页
腐蚀%管道%杂散电流%交流腐蚀
腐蝕%管道%雜散電流%交流腐蝕
부식%관도%잡산전류%교류부식
Corrosion%Pipeline%Stray current%AC corrosion
结合工程实际对金属管道在土壤中的腐蚀原理进行了论述，并着重于高压电线的交流电对管道腐蚀的影响进行了论述。当高压线距离管道1000 m以上时无需考虑交流电对其防腐作用；交流电密度有三种判定强度，分别是弱、中、强。当判定为强时则必须采取防腐保护措施。采用“负电位接地”的方法对管道进行的防腐蚀办法。
結閤工程實際對金屬管道在土壤中的腐蝕原理進行瞭論述，併著重于高壓電線的交流電對管道腐蝕的影響進行瞭論述。噹高壓線距離管道1000 m以上時無需攷慮交流電對其防腐作用；交流電密度有三種判定彊度，分彆是弱、中、彊。噹判定為彊時則必鬚採取防腐保護措施。採用“負電位接地”的方法對管道進行的防腐蝕辦法。
결합공정실제대금속관도재토양중적부식원리진행료논술，병착중우고압전선적교류전대관도부식적영향진행료논술。당고압선거리관도1000 m이상시무수고필교류전대기방부작용；교류전밀도유삼충판정강도，분별시약、중、강。당판정위강시칙필수채취방부보호조시。채용“부전위접지”적방법대관도진행적방부식판법。
Combined with engineering practice,the corrosion theory of metal pipe in the soil was discussed, and effect of high-voltage wiring AC on pipeline corrosion was investigated. The results show that, when the distance between the high voltage line and the pipe is above 1 000 m, effect of the AC on the pipeline corrosion need not be considered;AC power density can be divided into three determining strength including weak, medium and strong. When AC power density is strong, the corrosion protection measures must be taken."Negative potential ground"is an effective method for corrosion protection of the pipelines.
