更多(duo)陰極(ji)(ji)(ji)保護(hu)(hu)知(zhi)識(shi)，請登錄(lu)pindiguo.com 鑫弘大陰極(ji)(ji)(ji)保護(hu)(hu)生產經營產品(pin)有：犧(xi)牲陽極(ji)(ji)(ji)、深(shen)井陽極(ji)(ji)(ji)、參比電(dian)極(ji)(ji)(ji)、鋅(xin)接地電(dian)池、測試樁、恒電(dian)位(wei)儀等陰極(ji)(ji)(ji)保護(hu)(hu)配套產品(pin)。咨詢電(dian)話(hua)：13723197736 聯系(xi)人：張賓
在(zai)陰極保(bao)護(hu)中(zhong)，是(shi)用犧牲陽(yang)極法還是(shi)外(wai)加(jia)電(dian)流法呢(ni)？這兩種保(bao)護(hu)方(fang)式的(de)(de)(de)選擇，主要(yao)取決于的(de)(de)(de)原因(yin)有(you)：工程(cheng)規(gui)模(mo)大小，有(you)無經濟方(fang)便的(de)(de)(de)電(dian)源，所需保(bao)護(hu)電(dian)流密度大小，與周(zhou)圍金屬構(gou)筑物(wu)的(de)(de)(de)相互影響，土壤(rang)電(dian)阻率的(de)(de)(de)高(gao)低(di)。在(zai)工程(cheng)設計中(zhong)，應綜合考慮因(yin)素(su)，全年(nian)分析比較(jiao)。當被保(bao)護(hu)管道的(de)(de)(de)防護(hu)涂(tu)層(ceng)良好、土壤(rang)電(dian)阻率低(di)、周(zhou)圍地下金屬構(gou)筑物(wu)較(jiao)多時，采用犧牲陽(yang)極保(bao)護(hu) 法。
犧牲(sheng)陽(yang)極陰極保(bao)護(hu)(hu)(hu) 法，不(bu)(bu)需(xu)要(yao)(yao)外加電(dian)(dian)源，要(yao)(yao)求介(jie)質(zhi)電(dian)(dian)阻(zu)率(lv)較低(di)(di)，管理(li)簡便(bian)，不(bu)(bu)需(xu)日常維護(hu)(hu)(hu)，設計(ji)(ji)安裝后(hou)保(bao)護(hu)(hu)(hu)參(can)數不(bu)(bu)能改變，提供大電(dian)(dian)流困難，一般(ban)不(bu)(bu)會造成過保(bao)護(hu)(hu)(hu)，陰陽(yang)極消耗需(xu)周期性更(geng)換，不(bu)(bu)易產生(sheng)雜散電(dian)(dian)流腐(fu)蝕。是將(jiang)電(dian)(dian)位更(geng)負(fu)的(de)金(jin)(jin)屬(shu)與被(bei)(bei)保(bao)護(hu)(hu)(hu)金(jin)(jin)屬(shu)連接(jie)，并(bing)處于同(tong)一電(dian)(dian)解質(zhi)中，使(shi)該(gai)金(jin)(jin)屬(shu)上的(de)電(dian)(dian)子(zi)轉(zhuan)移到被(bei)(bei)保(bao)護(hu)(hu)(hu)金(jin)(jin)屬(shu)上去，使(shi)整個被(bei)(bei)保(bao)護(hu)(hu)(hu)金(jin)(jin)屬(shu)處于一個較負(fu)的(de)，相同(tong)的(de)電(dian)(dian)位下。這種方(fang)式簡便(bian)易行，不(bu)(bu)需(xu)要(yao)(yao)外加電(dian)(dian)源，很少產生(sheng)腐(fu)蝕干擾，廣(guang)泛用于保(bao)護(hu)(hu)(hu)小型或處于低(di)(di)土壤電(dian)(dian)阻(zu)率(lv)環境下的(de)金(jin)(jin)屬(shu)結構。比如：城市管網(wang)、小型儲罐等(deng)。設計(ji)(ji)犧牲(sheng)陽(yang)極保(bao)護(hu)(hu)(hu)時，除了(le)嚴格控(kong)制陽(yang)極成分(fen)外，一定(ding)要(yao)(yao)選擇土壤電(dian)(dian)阻(zu)率(lv)低(di)(di)的(de)陽(yang)極地床位置(zhi)。
外(wai)加電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)陰極(ji)保(bao)護(hu)，需(xu)要(yao)外(wai)加電(dian)(dian)(dian)(dian)(dian)源，介質電(dian)(dian)(dian)(dian)(dian)阻率的制約較小，應該經常管(guan)理，運行(xing)中(zhong)保(bao)護(hu)參數易調整，可以(yi)提供大電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，有可能產(chan)生過(guo)保(bao)護(hu)，陽(yang)極(ji)消耗慢，容(rong)易產(chan)生雜散電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)腐蝕(shi)。外(wai)加電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)陰極(ji)保(bao)護(hu)是通過(guo)外(wai)加直(zhi)流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)源以(yi)及(ji)輔(fu)助(zhu)陽(yang)極(ji)，迫使電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)從土(tu)(tu)壤中(zhong)流(liu)(liu)(liu)行(xing)被保(bao)護(hu)金屬(shu)(shu)，使被保(bao)護(hu)金屬(shu)(shu)結構電(dian)(dian)(dian)(dian)(dian)位低于周圍環境，主要(yao)同于保(bao)護(hu)大型或處(chu)于高土(tu)(tu)壤電(dian)(dian)(dian)(dian)(dian)阻率土(tu)(tu)壤中(zhong)的金屬(shu)(shu)結構，比如長輸埋地(di)管(guan)道、大型儲罐等。
更(geng)多陰(yin)極保(bao)護知識，請(qing)登錄 鑫弘大陰(yin)極保護生產(chan)經(jing)營(ying)產(chan)品有(you)：犧牲陽極、深井(jing)陽極、參比電極、鋅(xin)接地電池(chi)、測試樁、恒電位儀等(deng)陰(yin)極保護配套產(chan)品。咨詢電話：13723197736 聯系(xi)人：張賓(bin)
