常用(yong)的極化探頭在埋地鋼質管道陰(yin)極保護中的應用(yong)

  焦(jiao)作弘坤防腐(fu)陰(yin)極(ji)(ji)(ji)保(bao)護公司，位于河南(nan)省焦(jiao)作市(shi)，*的(de)陰(yin)極(ji)(ji)(ji)保(bao)護廠家，常用的(de)極(ji)(ji)(ji)化探頭在埋(mai)地鋼質管道陰(yin)極(ji)(ji)(ji)保(bao)護中(zhong)的(de)應用。

   今天為大家分析管(guan)道陰(yin)(yin)極(ji)保(bao)護(hu)電位(wei)測(ce)量(liang)誤差的原(yuan)因，論(lun)述極(ji)化(hua)探(tan)頭(tou)的結構和使(shi)用方法等知(zhi)識。歡(huan)迎大家查閱。參比電極(ji)的極(ji)化(hua)探(tan)頭(tou)在埋地(di)天然氣(qi)鋼(gang)質管(guan)道陰(yin)(yin)極(ji)保(bao)護(hu)參數測(ce)量(liang)中的實(shi)際效果。通過測(ce)量(liang)結果與其他方法的測(ce)量(liang)結果相比，在管(guan)道陰(yin)(yin)極(ji)保(bao)護(hu)正常(chang)運行(xing)狀態下(xia)，用極(ji)化(hua)探(tan)頭(tou)法可以使(shi)電位(wei)測(ce)量(liang)誤差小，可以測(ce)到(dao)接(jie)近真實(shi)值的管(guan)道陰(yin)(yin)極(ji)保(bao)護(hu)電位(wei)。

   在管(guan)道(dao)保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)位(wei)的(de)(de)測量(liang)(liang)中(zhong)，存(cun)在誤(wu)差(cha)(cha)(cha)(cha)的(de)(de)原(yuan)因(yin)，在此為(wei)(wei)大家講解。在運(yun)行餓陰(yin)極(ji)(ji)保(bao)護(hu)系統中(zhong)，將參(can)(can)比電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)置于管(guan)道(dao)附近土(tu)壤中(zhong)測量(liang)(liang)管(guan)道(dao)和(he)參(can)(can)比電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)之間的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)位(wei)差(cha)(cha)(cha)(cha)，得到通電(dian)(dian)(dian)(dian)(dian)(dian)狀態下的(de)(de)保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)位(wei)，稱為(wei)(wei)通電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)位(wei)。根據參(can)(can)比電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)與(yu)管(guan)道(dao)的(de)(de)距離不(bu)同(tong)(tong)，其測量(liang)(liang)又分為(wei)(wei)地表參(can)(can)比、近參(can)(can)比等不(bu)同(tong)(tong)方法(fa)。一般(ban)情(qing)況(kuang)下，采用(yong)斷(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)法(fa)即切斷(duan)(duan)陰(yin)極(ji)(ji)保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)后(hou)測量(liang)(liang)，可消除(chu)部(bu)(bu)分誤(wu)差(cha)(cha)(cha)(cha)。但在某(mou)些(xie)(xie)情(qing)況(kuang)下，這(zhe)些(xie)(xie)誤(wu)差(cha)(cha)(cha)(cha)就(jiu)是(shi)(shi)R將造(zao)成(cheng)(cheng)的(de)(de)。不(bu)能(neng)(neng)用(yong)斷(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)法(fa)消除(chu)的(de)(de)誤(wu)差(cha)(cha)(cha)(cha)是(shi)(shi)各(ge)種雜(za)散(san)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)、二(er)(er)次電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)造(zao)成(cheng)(cheng)的(de)(de)地電(dian)(dian)(dian)(dian)(dian)(dian)位(wei)梯度引起的(de)(de)，是(shi)(shi)非(fei)(fei)陰(yin)極(ji)(ji)保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)造(zao)成(cheng)(cheng)的(de)(de)歐(ou)姆(mu)壓降(jiang)，稱為(wei)(wei)非(fei)(fei)歐(ou)姆(mu)壓降(jiang)。雜(za)散(san)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)是(shi)(shi)在非(fei)(fei)指定回路中(zhong)流(liu)(liu)動的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)。二(er)(er)次電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)是(shi)(shi)因(yin)為(wei)(wei)被保(bao)護(hu)金(jin)屬(shu)極(ji)(ji)化(hua)(hua)(hua)程(cheng)度不(bu)同(tong)(tong)造(zao)成(cheng)(cheng)的(de)(de)在極(ji)(ji)化(hua)(hua)(hua)差(cha)(cha)(cha)(cha)異部(bu)(bu)位(wei)之間流(liu)(liu)動的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)。這(zhe)兩種電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)都不(bu)會因(yin)保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)中(zhong)斷(duan)(duan)而立(li)即消失(shi)。除(chu)了介質電(dian)(dian)(dian)(dian)(dian)(dian)阻、涂層電(dian)(dian)(dian)(dian)(dian)(dian)阻外，某(mou)些(xie)(xie)非(fei)(fei)歐(ou)姆(mu)因(yin)素也可能(neng)(neng)造(zao)成(cheng)(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)位(wei)測量(liang)(liang)誤(wu)差(cha)(cha)(cha)(cha)。在工程(cheng)施工中(zhong)，近年來(lai)推出管(guan)道(dao)瞬間斷(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)法(fa)、試片(pian)斷(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)法(fa)、極(ji)(ji)化(hua)(hua)(hua)探頭法(fa)等消除(chu)R降(jiang)的(de)(de)測量(liang)(liang)技(ji)術。