靜電(dian)是陰極(ji)系統的(de)主要部件。具有伏安(an)特性好，對(dui)粉塵比電(dian)阻變化的(de)適(shi)應性強(qiang)，截止電(dian)壓比使(shi)用其它(ta)電(dian)暈線的(de)收(shou)(shou)塵器高兩萬伏以長處。他的(de)好壞直接影響著收(shou)(shou)塵效(xiao)果。

芒(mang)刺(ci)線(xian)（陰(yin)極線(xian)、電(dian)暈線(xian)）可以安裝在(zai)各種臥式或(huo)立式靜電(dian)收(shou)塵器中，芒(mang)刺(ci)線(xian)（陰(yin)極又稱為放電(dian)極或(huo)電(dian)暈極）與陽極一起(qi)形成(cheng)非均勻電(dian)場，產生電(dian)暈電(dian)流。由(you)陰(yin)極線(xian)、陰(yin)極框(kuang)架(jia)和陰(yin)極吊(diao)掛(gua)裝置等組成(cheng)。

芒刺線(xian)(xian)(xian)型式有(you)好(hao)多(duo)(duo)種,放電(dian)(dian)尖角(jiao)越(yue)(yue)多(duo)(duo)則(ze)電(dian)(dian)暈(yun)(yun)(yun)的(de)(de)(de)效(xiao)果也就越(yue)(yue)好(hao),但是(shi)放電(dian)(dian)尖角(jiao)越(yue)(yue)多(duo)(duo),制作(zuo)及安裝較為難題.電(dian)(dian)暈(yun)(yun)(yun)線(xian)(xian)(xian)極(ji)一(yi)般(ban)都(dou)接有(you)高(gao)壓電(dian)(dian),需(xu)要有(you)良好(hao)的(de)(de)(de)絕(jue)緣裝置(zhi)，電(dian)(dian)暈(yun)(yun)(yun)線(xian)(xian)(xian)之間(jian)的(de)(de)(de)間(jian)隔要適當(dang),間(jian)隔太(tai)遠影響電(dian)(dian)暈(yun)(yun)(yun)的(de)(de)(de)電(dian)(dian)流，間(jian)隔太(tai)近,電(dian)(dian)暈(yun)(yun)(yun)線(xian)(xian)(xian)間(jian)可能會產(chan)生屏弊現象(xiang),造成電(dian)(dian)暈(yun)(yun)(yun)線(xian)(xian)(xian)表面電(dian)(dian)場強(qiang)度減弱.集(ji)(ji)塵(chen)極(ji)集(ji)(ji)塵(chen)極(ji)的(de)(de)(de)上(shang)下部(bu)都(dou)是(shi)固定(ding)的(de)(de)(de),并且集(ji)(ji)塵(chen)極(ji)都(dou)是(shi)接地.一(yi)般(ban)要求粉塵(chen)易于沉降在(zai)極(ji)板上(shang),在(zai)振(zhen)打的(de)(de)(de)時候(hou)所產(chan)生的(de)(de)(de)二次揚(yang)塵(chen)少,同時還要求極(ji)板較為輕便,又(you)要有(you)的(de)(de)(de)剛度,振(zhen)打時粉塵(chen)易于沉落(luo)又(you)不會發生變形。

芒(mang)刺(ci)(ci)(ci)(ci)(ci)線(xian)(xian)(xian)（陰(yin)(yin)(yin)極線(xian)(xian)(xian)）屬(shu)于(yu)點狀(zhuang)放電(dian)(dian)，其(qi)起暈(yun)電(dian)(dian)壓比其(qi)他形(xing)式芒(mang)刺(ci)(ci)(ci)(ci)(ci)線(xian)(xian)(xian)（陰(yin)(yin)(yin)極線(xian)(xian)(xian)）低，放電(dian)(dian)，在(zai)(zai)正常情況下比星(xing)形(xing)線(xian)(xian)(xian)的(de)(de)電(dian)(dian)暈(yun)電(dian)(dian)流高1倍。此芒(mang)刺(ci)(ci)(ci)(ci)(ci)線(xian)(xian)(xian)（陰(yin)(yin)(yin)極線(xian)(xian)(xian)）力學，不(bu)易斷線(xian)(xian)(xian)和變形(xing)。由(you)于(yu)芒(mang)刺(ci)(ci)(ci)(ci)(ci)線(xian)(xian)(xian)（陰(yin)(yin)(yin)極線(xian)(xian)(xian)）尖(jian)(jian)放電(dian)(dian)，增 強了板線(xian)(xian)(xian)附近的(de)(de)電(dian)(dian)風，芒(mang)刺(ci)(ci)(ci)(ci)(ci)點不(bu)易積塵(chen)，除塵(chen)，此芒(mang)刺(ci)(ci)(ci)(ci)(ci)線(xian)(xian)(xian)（陰(yin)(yin)(yin)極線(xian)(xian)(xian)）適用(yong)于(yu)含塵(chen)濃度高的(de)(de)場(chang)合，在(zai)(zai)大型靜電(dian)(dian)除塵(chen)器中，常在(zai)(zai)一、二(er)電(dian)(dian)場(chang)內(nei)使用(yong)陰(yin)(yin)(yin)極線(xian)(xian)(xian)。芒(mang)刺(ci)(ci)(ci)(ci)(ci)線(xian)(xian)(xian)（陰(yin)(yin)(yin)極線(xian)(xian)(xian)）電(dian)(dian)極的(de)(de)刺(ci)(ci)(ci)(ci)(ci)尖(jian)(jian)有時會(hui)結小球，因而不(bu)易清灰。常用(yong)的(de)(de)有柱狀(zhuang)芒(mang)刺(ci)(ci)(ci)(ci)(ci)線(xian)(xian)(xian)、扁鋼(gang)(gang)芒(mang)刺(ci)(ci)(ci)(ci)(ci)線(xian)(xian)(xian)、管狀(zhuang)芒(mang)刺(ci)(ci)(ci)(ci)(ci)線(xian)(xian)(xian)、鋸齒芒(mang)刺(ci)(ci)(ci)(ci)(ci)線(xian)(xian)(xian)、角鋼(gang)(gang)芒(mang)刺(ci)(ci)(ci)(ci)(ci)線(xian)(xian)(xian)、波(bo)形(xing)芒(mang)刺(ci)(ci)(ci)(ci)(ci)線(xian)(xian)(xian)和魚(yu)骨(gu)陰(yin)(yin)(yin)極線(xian)(xian)(xian)等。

管(guan)(guan)狀芒(mang)(mang)(mang)刺(ci)(ci)線(xian)亦稱RS陰(yin)(yin)極(ji)(ji)(ji)線(xian)，一(yi)般和(he)480C形板(ban)(ban)或385Z形板(ban)(ban)配(pei)用(yong)，是使用(yong)較(jiao)為普遍的電暈(yun)電極(ji)(ji)(ji)。早期的管(guan)(guan)狀芒(mang)(mang)(mang)刺(ci)(ci)線(xian)（陰(yin)(yin)極(ji)(ji)(ji)線(xian)）是由(you)兩(liang)個半圓(yuan)管(guan)(guan)組(zu)成(cheng)并焊上(shang)(shang)芒(mang)(mang)(mang)刺(ci)(ci)。因芒(mang)(mang)(mang)刺(ci)(ci)線(xian)的芒(mang)(mang)(mang)刺(ci)(ci)點焊不好容易脫落(luo)，如果把芒(mang)(mang)(mang)刺(ci)(ci)和(he)半圓(yuan)管(guan)(guan)由(you)一(yi)塊鋼板(ban)(ban)沖出(chu)，成(cheng)為整體鋒狀陰(yin)(yin)極(ji)(ji)(ji)線(xian)，芒(mang)(mang)(mang)刺(ci)(ci)線(xian)的芒(mang)(mang)(mang)刺(ci)(ci)不會脫落(luo)，但測試(shi)表明，與(yu)圓(yuan)管(guan)(guan)相對(dui)的收塵極(ji)(ji)(ji)板(ban)(ban)處(chu)電流密度為零。現在在圓(yuan)管(guan)(guan)上(shang)(shang)壓出(chu)尖刺(ci)(ci)的管(guan)(guan)形陰(yin)(yin)極(ji)(ji)(ji)線(xian)，解決了電暈(yun)電流不均勻問題。

的安(an)裝(zhuang)標準：

①牢(lao)固、機械強(qiang)度大、不易(yi)斷線。每個(ge)電場(chang)(chang)往往有數百根(gen)甚至數千根(gen)陰極(ji)線，其中(zhong)只要有一根(gen)折斷便可(ke)能(neng)造成整個(ge)電場(chang)(chang)短(duan)路，使該電場(chang)(chang)停(ting)止運(yun)行或(huo)處于低(di)除塵效(xiao)率(lv)(lv)狀態下(xia)運(yun)行。靜電除塵器停(ting)止運(yun)行或(huo)低(di)效(xiao)率(lv)(lv)運(yun)行，都會使出(chu)口煙氣排放(fang)濃(nong)度提高，導致引(yin)風機的(de)葉片(pian)磨損增大而縮短(duan)使用壽命。因此(ci)，陰極(ji)線在設計、制造時應考慮具有足夠的(de)機械強(qiang)度。

②電(dian)氣性(xing)能良好。陰極線的(de)形狀和尺寸可在某(mou)種(zhong)程度上改變起暈電(dian)壓、電(dian)流和電(dian)場強度的(de)大(da)小和分(fen)布(bu)。良好的(de)電(dian)氣性(xing)能通常是(shi)指使陽(yang)極板上的(de)電(dian)流密(mi)度分(fen)布(bu)均勻、平均電(dian)場；對(dui)于含塵(chen)濃度高(gao)、粉塵(chen)粒(li)徑細及高(gao)比電(dian)阻粉塵(chen)均表現出的(de)適應性(xing)。

③伏(fu)安(an)特(te)性曲線理想。指每個獨立供電(dian)(dian)(dian)的電(dian)(dian)(dian)場或室在通電(dian)(dian)(dian)后(hou)，伏(fu)安(an)特(te)性的斜率(lv)要(yao)大(da)(da)，這意味(wei)著在相同的電(dian)(dian)(dian)壓(ya)下粉塵荷電(dian)(dian)(dian)的概率(lv)大(da)(da)。而且，良好的伏(fu)安(an)特(te)性還要(yao)求(qiu)電(dian)(dian)(dian)場的擊穿電(dian)(dian)(dian)壓(ya)高，電(dian)(dian)(dian)場的能量(liang)大(da)(da)。