更多陰(yin)極保護(hu)知(zhi)識，請(qing)登(deng)錄chenghuanjiu.cn 鑫弘大陰(yin)極保護(hu)生產(chan)經營產(chan)品有：犧牲陽極、深井陽極、參比(bi)電(dian)極、鋅接地電(dian)池(chi)、測(ce)試樁、恒電(dian)位儀等陰(yin)極保護(hu)配套產(chan)品。咨詢電(dian)話：13723197736 聯系人(ren)：張賓
在陰(yin)極(ji)保(bao)護(hu)中(zhong)，是(shi)用(yong)犧牲(sheng)陽極(ji)法還(huan)是(shi)外加(jia)電(dian)流(liu)法呢？這兩(liang)種保(bao)護(hu)方式(shi)的(de)(de)選擇，主(zhu)要取決于的(de)(de)原因有：工(gong)程規模大小(xiao)，有無經濟方便的(de)(de)電(dian)源，所需(xu)保(bao)護(hu)電(dian)流(liu)密度(du)大小(xiao)，與(yu)周圍(wei)金(jin)屬構(gou)筑(zhu)(zhu)物的(de)(de)相互影響，土(tu)壤電(dian)阻(zu)(zu)率的(de)(de)高低。在工(gong)程設計中(zhong)，應綜合考慮因素，全年分析比較(jiao)。當被保(bao)護(hu)管道的(de)(de)防護(hu)涂(tu)層良(liang)好、土(tu)壤電(dian)阻(zu)(zu)率低、周圍(wei)地(di)下金(jin)屬構(gou)筑(zhu)(zhu)物較(jiao)多時，采用(yong)犧牲(sheng)陽極(ji)保(bao)護(hu) 法。
犧(xi)牲陽(yang)極(ji)(ji)陰極(ji)(ji)保(bao)(bao)護(hu) 法(fa)，不需要(yao)外加(jia)電(dian)(dian)(dian)(dian)(dian)源(yuan)，要(yao)求(qiu)介質(zhi)電(dian)(dian)(dian)(dian)(dian)阻率(lv)較低(di)，管理簡便，不需日(ri)常維護(hu)，設(she)計安(an)裝后保(bao)(bao)護(hu)參數不能改變，提供大(da)電(dian)(dian)(dian)(dian)(dian)流(liu)困難，一般不會造成過(guo)保(bao)(bao)護(hu)，陰陽(yang)極(ji)(ji)消耗需周期性更換，不易(yi)(yi)產(chan)生(sheng)(sheng)雜散電(dian)(dian)(dian)(dian)(dian)流(liu)腐蝕。是(shi)將電(dian)(dian)(dian)(dian)(dian)位(wei)(wei)更負的金(jin)(jin)屬(shu)與被保(bao)(bao)護(hu)金(jin)(jin)屬(shu)連(lian)接(jie)，并處(chu)(chu)于(yu)同一電(dian)(dian)(dian)(dian)(dian)解質(zhi)中，使(shi)該金(jin)(jin)屬(shu)上的電(dian)(dian)(dian)(dian)(dian)子轉移到被保(bao)(bao)護(hu)金(jin)(jin)屬(shu)上去，使(shi)整個(ge)(ge)被保(bao)(bao)護(hu)金(jin)(jin)屬(shu)處(chu)(chu)于(yu)一個(ge)(ge)較負的，相同的電(dian)(dian)(dian)(dian)(dian)位(wei)(wei)下。這種(zhong)方式(shi)簡便易(yi)(yi)行，不需要(yao)外加(jia)電(dian)(dian)(dian)(dian)(dian)源(yuan)，很少(shao)產(chan)生(sheng)(sheng)腐蝕干擾，廣泛用于(yu)保(bao)(bao)護(hu)小型或(huo)處(chu)(chu)于(yu)低(di)土壤電(dian)(dian)(dian)(dian)(dian)阻率(lv)環境下的金(jin)(jin)屬(shu)結構。比如：城市管網(wang)、小型儲罐等。設(she)計犧(xi)牲陽(yang)極(ji)(ji)保(bao)(bao)護(hu)時，除(chu)了嚴格控制陽(yang)極(ji)(ji)成分外，一定要(yao)選擇(ze)土壤電(dian)(dian)(dian)(dian)(dian)阻率(lv)低(di)的陽(yang)極(ji)(ji)地床(chuang)位(wei)(wei)置。
外(wai)加(jia)電(dian)(dian)(dian)(dian)流(liu)陰(yin)極保(bao)(bao)護(hu)(hu)，需(xu)要(yao)外(wai)加(jia)電(dian)(dian)(dian)(dian)源，介(jie)質電(dian)(dian)(dian)(dian)阻率的(de)制約較小，應(ying)該(gai)經常管理，運行中保(bao)(bao)護(hu)(hu)參數易調整，可以提供大電(dian)(dian)(dian)(dian)流(liu)，有(you)可能產生過(guo)(guo)保(bao)(bao)護(hu)(hu)，陽(yang)極消耗慢(man)，容易產生雜散(san)電(dian)(dian)(dian)(dian)流(liu)腐蝕。外(wai)加(jia)電(dian)(dian)(dian)(dian)流(liu)陰(yin)極保(bao)(bao)護(hu)(hu)是通過(guo)(guo)外(wai)加(jia)直流(liu)電(dian)(dian)(dian)(dian)源以及輔助陽(yang)極，迫使(shi)電(dian)(dian)(dian)(dian)流(liu)從土壤中流(liu)行被保(bao)(bao)護(hu)(hu)金屬，使(shi)被保(bao)(bao)護(hu)(hu)金屬結(jie)構(gou)電(dian)(dian)(dian)(dian)位低于周圍環境，主(zhu)要(yao)同于保(bao)(bao)護(hu)(hu)大型或處于高土壤電(dian)(dian)(dian)(dian)阻率土壤中的(de)金屬結(jie)構(gou)，比如(ru)長輸埋(mai)地管道、大型儲罐等。
更多陰(yin)極保護知(zhi)識，請(qing)登(deng)錄 鑫弘大陰極保護(hu)生產(chan)(chan)經(jing)營產(chan)(chan)品有：犧(xi)牲陽極、深井陽極、參比電極、鋅接地(di)電池(chi)、測試樁、恒(heng)電位儀(yi)等陰極保護(hu)配套產(chan)(chan)品。咨詢電話：13723197736 聯系人：張(zhang)賓
