化工廠防爆配電箱的密封構造處理

防爆配電箱的密封結構處理

防爆箱為要求嚴格密封，各進出線孔的電線均采用套封膠套、膠墊密閉，箱內不允許外面氣體自由滲入；
普通箱為了散熱是提倡空氣對流的。 防爆配電箱該產品元件和結普通構要滿足防爆等級要求，生產單位還在
通過國家防爆安全檢測，拿到產品的防爆合格證，產品工藝材質較普通箱精細些。配電箱只是一個如同的
電氣控制箱，防爆配電箱是一種能防爆的配電裝置，對電器元件有要求，
尤其是對殼體有明確的要求可規定，還要求有防爆合格證，具體還要看你要的是什么防爆技術型的配電箱，不
同的有不同技術要求。

防(fang)爆箱進(jin)出線口zui基本(ben)的密封處(chu)理就是使用密封圈(quan)。防(fang)爆設備(bei)對密封圈(quan)有(you)較為嚴格(ge)的要(yao)求：

防爆設(she)備(bei)密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)膠(jiao)(jiao)圈(quan)(quan)(quan)(quan)(quan)(quan)的(de)(de)具體規定  1、膠(jiao)(jiao)圈(quan)(quan)(quan)(quan)(quan)(quan)外徑(jing)(jing)(jing)(jing)(jing)(jing)D與(yu)腔室(shi)內(nei)徑(jing)(jing)(jing)(jing)(jing)(jing)間(jian)隙不(bu)(bu)(bu)大(da)于(yu)(yu)2mm。 2、膠(jiao)(jiao)圈(quan)(quan)(quan)(quan)(quan)(quan)內(nei)徑(jing)(jing)(jing)(jing)(jing)(jing)d與(yu)電(dian)(dian)(dian)(dian)(dian)纜(lan)外徑(jing)(jing)(jing)(jing)(jing)(jing)間(jian)隙不(bu)(bu)(bu)大(da)于(yu)(yu)1mm。  3、膠(jiao)(jiao)圈(quan)(quan)(quan)(quan)(quan)(quan)寬(kuan)度(du)(du)(du)(du)A不(bu)(bu)(bu)得(de)小(xiao)于(yu)(yu)0.7倍的(de)(de)電(dian)(dian)(dian)(dian)(dian)纜(lan)外徑(jing)(jing)(jing)(jing)(jing)(jing)，但不(bu)(bu)(bu)得(de)小(xiao)于(yu)(yu)10mm。 4、膠(jiao)(jiao)圈(quan)(quan)(quan)(quan)(quan)(quan)厚度(du)(du)(du)(du)B不(bu)(bu)(bu)得(de)小(xiao)于(yu)(yu)0.3倍的(de)(de)電(dian)(dian)(dian)(dian)(dian)纜(lan)外徑(jing)(jing)(jing)(jing)(jing)(jing)，但不(bu)(bu)(bu)得(de)小(xiao)于(yu)(yu)4mm。      用(yong)(yong)(yong)螺(luo)栓(shuan)(shuan)固定的(de)(de)隔爆結合(he)面在(zai)(zai)(zai)(zai)什麼情況下(xia)為(wei)(wei)(wei)(wei)失(shi)爆 1、缺螺(luo)栓(shuan)(shuan)、彈(dan)簧墊或(huo)螺(luo)母(mu)。 2、彈(dan)簧墊未(wei)(wei)壓(ya)(ya)平或(huo)螺(luo)栓(shuan)(shuan)松動。  3、螺(luo)栓(shuan)(shuan)或(huo)螺(luo)孔(kong)滑(hua)扣(kou)未(wei)(wei)采取規定措施。      隔爆設(she)備(bei)的(de)(de)電(dian)(dian)(dian)(dian)(dian)纜(lan)引(yin)(yin)(yin)入(ru)(ru)裝(zhuang)(zhuang)置在(zai)(zai)(zai)(zai)什麼情況下(xia)為(wei)(wei)(wei)(wei)失(shi)爆     答：電(dian)(dian)(dian)(dian)(dian)纜(lan)引(yin)(yin)(yin)入(ru)(ru)裝(zhuang)(zhuang)置（即(ji)進(jin)(jin)線嘴(zui)(zui)）應(ying)完整、齊全(quan)、緊(jin)(jin)固、 密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)良好。有下(xia)列之(zhi)(zhi)(zhi)一(yi)即(ji)為(wei)(wei)(wei)(wei)失(shi)爆： 1、密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)內(nei)徑(jing)(jing)(jing)(jing)(jing)(jing)大(da)于(yu)(yu)引(yin)(yin)(yin)入(ru)(ru)電(dian)(dian)(dian)(dian)(dian)纜(lan)外徑(jing)(jing)(jing)(jing)(jing)(jing)1mm以上(shang)。  2、進(jin)(jin)線嘴(zui)(zui)內(nei)徑(jing)(jing)(jing)(jing)(jing)(jing)D0與(yu)密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)外徑(jing)(jing)(jing)(jing)(jing)(jing)D的(de)(de)差(cha)值超過(guo)下(xia)表的(de)(de)規定  D（mm） D0-D（mm） D≤20 1.0 20＜D≤60 1.5 D＞60 2.0  3、密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)尺寸不(bu)(bu)(bu)符(fu)合(he)規定的(de)(de)。  4、密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)的(de)(de)單孔(kong)內(nei)穿進(jin)(jin)多根電(dian)(dian)(dian)(dian)(dian)纜(lan)的(de)(de)。 5、密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)割開套在(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)纜(lan)上(shang)的(de)(de)。 6、密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)部分破損。  7、密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)沒(mei)(mei)有*套在(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)纜(lan)護(hu)套上(shang)。  8、密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)與(yu)電(dian)(dian)(dian)(dian)(dian)纜(lan)護(hu)套之(zhi)(zhi)(zhi)間(jian)有其(qi)他包(bao)扎物。 9、一(yi)個引(yin)(yin)(yin)入(ru)(ru)裝(zhuang)(zhuang)置內(nei)用(yong)(yong)(yong)多個密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)。  10、空(kong)閑(xian)引(yin)(yin)(yin)入(ru)(ru)裝(zhuang)(zhuang)置沒(mei)(mei)有密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)擋(dang)(dang)(dang)(dang)板；擋(dang)(dang)(dang)(dang)板直徑(jing)(jing)(jing)(jing)(jing)(jing)比引(yin)(yin)(yin)入(ru)(ru)裝(zhuang)(zhuang)置內(nei)徑(jing)(jing)(jing)(jing)(jing)(jing)小(xiao)2mm以上(shang)，擋(dang)(dang)(dang)(dang)板厚度(du)(du)(du)(du)小(xiao)于(yu)(yu) 1.82mm（公稱厚度(du)(du)(du)(du)2mm   ，允差(cha)為(wei)(wei)(wei)(wei)±0.18mm）  11、擋(dang)(dang)(dang)(dang)板裝(zhuang)(zhuang)在(zai)(zai)(zai)(zai)密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)里邊的(de)(de)；金屬圈(quan)(quan)(quan)(quan)(quan)(quan)放在(zai)(zai)(zai)(zai)擋(dang)(dang)(dang)(dang)板與(yu)密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)之(zhi)(zhi)(zhi)間(jian)。  12、進(jin)(jin)線嘴(zui)(zui)壓(ya)(ya)緊(jin)(jin)后沒(mei)(mei)有余量，或(huo)進(jin)(jin)線嘴(zui)(zui)內(nei)緣(yuan)(yuan)壓(ya)(ya)不(bu)(bu)(bu)緊(jin)(jin)密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)，或(huo)密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)端面與(yu)器壁(bi)接(jie)(jie)觸不(bu)(bu)(bu)嚴， 或(huo)密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)能(neng)(neng)活(huo)動的(de)(de)。  13、壓(ya)(ya)盤式(shi)引(yin)(yin)(yin)入(ru)(ru)裝(zhuang)(zhuang)置缺壓(ya)(ya)緊(jin)(jin)螺(luo)栓(shuan)(shuan)，或(huo)壓(ya)(ya)緊(jin)(jin)螺(luo)栓(shuan)(shuan)未(wei)(wei)上(shang)緊(jin)(jin)。  14、壓(ya)(ya)緊(jin)(jin)螺(luo)母(mu)式(shi)引(yin)(yin)(yin)入(ru)(ru)裝(zhuang)(zhuang)置因(yin)亂扣(kou) 、銹(xiu)蝕等(deng)原因(yin)緊(jin)(jin)不(bu)(bu)(bu)到(dao)位(wei)或(huo)用(yong)(yong)(yong)一(yi)只手的(de)(de)手指(zhi)能(neng)(neng)使(shi)旋進(jin)(jin)螺(luo)母(mu)旋 進(jin)(jin)超過(guo)半圈(quan)(quan)(quan)(quan)(quan)(quan)的(de)(de)。  15、使(shi)用(yong)(yong)(yong)壓(ya)(ya)緊(jin)(jin)螺(luo)母(mu)式(shi)引(yin)(yin)(yin)入(ru)(ru)裝(zhuang)(zhuang)置，在(zai)(zai)(zai)(zai)螺(luo)母(mu)與(yu)密(mi)(mi)(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)(quan)(quan)(quan)之(zhi)(zhi)(zhi)間(jian)缺少金屬墊圈(quan)(quan)(quan)(quan)(quan)(quan)的(de)(de)。  16、電(dian)(dian)(dian)(dian)(dian)纜(lan)在(zai)(zai)(zai)(zai)引(yin)(yin)(yin)入(ru)(ru)裝(zhuang)(zhuang)置處能(neng)(neng)輕易來回抽(chou)動的(de)(de)，（注：電(dian)(dian)(dian)(dian)(dian)纜(lan)緊(jin)(jin)固程(cheng)度(du)(du)(du)(du)的(de)(de)判(pan)別(bie)方法：順著電(dian)(dian)(dian)(dian)(dian)纜(lan)方向 以用(yong)(yong)(yong)手不(bu)(bu)(bu)能(neng)(neng)將電(dian)(dian)(dian)(dian)(dian)纜(lan)推進(jin)(jin)接(jie)(jie)線室(shi)為(wei)(wei)(wei)(wei)合(he)格(ge)。）  17、高壓(ya)(ya)鎧裝(zhuang)(zhuang)電(dian)(dian)(dian)(dian)(dian)纜(lan)終端接(jie)(jie)線盒沒(mei)(mei)有灌(guan)絕緣(yuan)(yuan)膠(jiao)(jiao)；絕緣(yuan)(yuan)膠(jiao)(jiao)沒(mei)(mei)有灌(guan)到(dao)電(dian)(dian)(dian)(dian)(dian)纜(lan)終端分叉上(shang)，絕緣(yuan)(yuan)膠(jiao)(jiao)裂(lie)紋 而能(neng)(neng)相(xiang)對活(huo)動的(de)(de)。  18、備(bei)用(yong)(yong)(yong)高壓(ya)(ya)接(jie)(jie)線盒缺擋(dang)(dang)(dang)(dang)板或(huo)擋(dang)(dang)(dang)(dang)板不(bu)(bu)(bu)合(he)格(ge)。