【中(zhong)國防爆(bao)箱(xiang)交易(yi)網】

一.誤區之(zhi)一：防(fang)爆電氣(qi)設備能防(fang)水 

不少(shao)人以(yi)為，防爆(bao)電(dian)氣設備之所以(yi)能(neng)防爆(bao)，是(shi)由于其外殼(ke)能(neng)阻(zu)撓(nao)有爆(bao)破風(feng)險的氣體進入其內(nei)部，其密封(feng)功能(neng)必定很好，能(neng)阻(zu)撓(nao)雨水(shui)進入，裝(zhuang)置在野外露天運用應該沒有問(wen)題。其實這(zhe)是(shi)混(hun)雜了防爆(bao)電(dian)氣設備的防爆(bao)方式和外殼(ke)防護等級(ji)兩個(ge)概念(nian)。 

防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)(dian)(dian)氣(qi)(qi)設(she)(she)備(bei)按其防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)原理的不(bu)(bu)同(tong)而(er)分為(wei)不(bu)(bu)同(tong)的防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)方式。隔爆(bao)(bao)(bao)(bao)(bao)型(xing)(xing)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)(dian)(dian)氣(qi)(qi)設(she)(she)備(bei)是具有能(neng)(neng)接受內部(bu)爆(bao)(bao)(bao)(bao)(bao)破(po)性(xing)(xing)氣(qi)(qi)體混合(he)(he)物的爆(bao)(bao)(bao)(bao)(bao)破(po)壓力，并(bing)阻撓內部(bu)的爆(bao)(bao)(bao)(bao)(bao)破(po)向(xiang)外(wai)(wai)(wai)殼(ke)周圍(wei)爆(bao)(bao)(bao)(bao)(bao)破(po)性(xing)(xing)混合(he)(he)物傳達的外(wai)(wai)(wai)殼(ke)的電(dian)(dian)(dian)(dian)氣(qi)(qi)設(she)(she)備(bei)。明(ming)顯其防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)功(gong)(gong)能(neng)(neng)與(yu)外(wai)(wai)(wai)殼(ke)防(fang)(fang)(fang)(fang)護(hu)(hu)等(deng)(deng)級(ji)(ji)無(wu)關(guan)，國(guo)家(jia)標準(zhun)(zhun)對(dui)(dui)其外(wai)(wai)(wai)殼(ke)防(fang)(fang)(fang)(fang)護(hu)(hu)等(deng)(deng)級(ji)(ji)并(bing)無(wu)特別(bie)要(yao)求，只需滿(man)意電(dian)(dian)(dian)(dian)機及低(di)壓電(dian)(dian)(dian)(dian)器外(wai)(wai)(wai)殼(ke)防(fang)(fang)(fang)(fang)護(hu)(hu)等(deng)(deng)級(ji)(ji)要(yao)求即可(ke)，但(dan)對(dui)(dui)其外(wai)(wai)(wai)殼(ke)的材(cai)質和(he)(he)機械強度(du)作了(le)嚴格的規則。增安(an)型(xing)(xing)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)(dian)(dian)氣(qi)(qi)設(she)(she)備(bei)是在(zai)正(zheng)常運轉條件(jian)下不(bu)(bu)會發(fa)生(sheng)電(dian)(dian)(dian)(dian)弧、火(huo)花或(huo)可(ke)能(neng)(neng)點(dian)著爆(bao)(bao)(bao)(bao)(bao)破(po)性(xing)(xing)混合(he)(he)物的高(gao)溫(wen)的設(she)(she)備(bei)結構(gou)上，采納辦法進(jin)步安(an)全(quan)程度(du)，以防(fang)(fang)(fang)(fang)止(zhi)在(zai)正(zheng)常和(he)(he)認可(ke)的過載條件(jian)下呈現(xian)這(zhe)些現(xian)象的電(dian)(dian)(dian)(dian)氣(qi)(qi)設(she)(she)備(bei)。而(er)本質安(an)全(quan)型(xing)(xing)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)(dian)(dian)氣(qi)(qi)設(she)(she)備(bei)（多見于小型(xing)(xing)弱電(dian)(dian)(dian)(dian)設(she)(she)備(bei)）是悉數電(dian)(dian)(dian)(dian)路為(wei)在(zai)規則的故障(zhang)狀態下發(fa)生(sheng)的電(dian)(dian)(dian)(dian)火(huo)花和(he)(he)熱效應均不(bu)(bu)能(neng)(neng)點(dian)著規則的爆(bao)(bao)(bao)(bao)(bao)破(po)性(xing)(xing)混合(he)(he)物的電(dian)(dian)(dian)(dian)氣(qi)(qi)設(she)(she)備(bei)。這(zhe)兩種防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)(dian)(dian)氣(qi)(qi)設(she)(she)備(bei)或(huo)是不(bu)(bu)發(fa)生(sheng)火(huo)花和(he)(he)高(gao)溫(wen)，或(huo)是發(fa)生(sheng)的火(huo)花和(he)(he)熱效應不(bu)(bu)足以點(dian)著爆(bao)(bao)(bao)(bao)(bao)破(po)性(xing)(xing)混合(he)(he)物，明(ming)顯其防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)功(gong)(gong)能(neng)(neng)也與(yu)外(wai)(wai)(wai)殼(ke)防(fang)(fang)(fang)(fang)護(hu)(hu)等(deng)(deng)級(ji)(ji)無(wu)關(guan)，因而(er)國(guo)家(jia)標準(zhun)(zhun)對(dui)(dui)其外(wai)(wai)(wai)殼(ke)防(fang)(fang)(fang)(fang)護(hu)(hu)等(deng)(deng)級(ji)(ji)也無(wu)特別(bie)要(yao)求。 

由此可知，絕大多數防(fang)(fang)爆電氣(qi)(qi)(qi)(qi)設(she)(she)(she)(she)備(bei)均(jun)不(bu)能(neng)(neng)阻撓氣(qi)(qi)(qi)(qi)體或水進入其(qi)內部，因而不(bu)能(neng)(neng)將(jiang)這些防(fang)(fang)爆電氣(qi)(qi)(qi)(qi)設(she)(she)(she)(she)備(bei)直接裝置(zhi)在野外(wai)露天場所，也(ye)不(bu)能(neng)(neng)用水沖洗其(qi)外(wai)殼(ke)。其(qi)實(shi)設(she)(she)(she)(she)備(bei)的(de)防(fang)(fang)水功能(neng)(neng)完(wan)全由其(qi)外(wai)殼(ke)防(fang)(fang)護等(deng)級(ji)決議，一(yi)(yi)般用于(yu)野外(wai)能(neng)(neng)防(fang)(fang)雨水的(de)電氣(qi)(qi)(qi)(qi)設(she)(she)(she)(she)備(bei)外(wai)殼(ke)的(de)防(fang)(fang)護等(deng)級(ji)應(ying)到(dao)達IPX5（即能(neng)(neng)飽(bao)嘗(chang)來(lai)自各個方向的(de)噴(pen)水而不(bu)進水），因而在購買防(fang)(fang)爆電氣(qi)(qi)(qi)(qi)設(she)(she)(she)(she)備(bei)時有必要一(yi)(yi)起提出外(wai)殼(ke)防(fang)(fang)護等(deng)級(ji)要求，另外(wai)要注意的(de)一(yi)(yi)點是用于(yu)野外(wai)的(de)防(fang)(fang)爆電氣(qi)(qi)(qi)(qi)設(she)(she)(she)(she)備(bei)應(ying)耐腐蝕。 

二.誤區之(zhi)二：氣體防爆(bao)電氣設備能夠用于粉塵爆(bao)破(po)風險場所 

現在，許(xu)多人對粉塵(chen)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)及(ji)粉塵(chen)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)氣(qi)(qi)(qi)(qi)(qi)設(she)(she)備還(huan)缺少充沛的(de)知道，實際使(shi)用(yong)(yong)中(zhong)不管是(shi)(shi)(shi)氣(qi)(qi)(qi)(qi)(qi)體(ti)爆(bao)(bao)(bao)(bao)(bao)破風(feng)險場(chang)所(suo)仍是(shi)(shi)(shi)粉塵(chen)爆(bao)(bao)(bao)(bao)(bao)破風(feng)險場(chang)所(suo)，都選用(yong)(yong)氣(qi)(qi)(qi)(qi)(qi)體(ti)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)氣(qi)(qi)(qi)(qi)(qi)設(she)(she)備。其實這(zhe)是(shi)(shi)(shi)過錯的(de)，由于(yu)(yu)從各防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)氣(qi)(qi)(qi)(qi)(qi)設(she)(she)備的(de)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)原理可(ke)知，絕大多數(shu)氣(qi)(qi)(qi)(qi)(qi)體(ti)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)氣(qi)(qi)(qi)(qi)(qi)設(she)(she)備外(wai)殼防(fang)(fang)護(hu)(hu)(hu)等級(ji)(ji)低于(yu)(yu)粉塵(chen)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)氣(qi)(qi)(qi)(qi)(qi)設(she)(she)備，若將(jiang)氣(qi)(qi)(qi)(qi)(qi)體(ti)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)氣(qi)(qi)(qi)(qi)(qi)設(she)(she)備用(yong)(yong)于(yu)(yu)粉塵(chen)爆(bao)(bao)(bao)(bao)(bao)破風(feng)險場(chang)所(suo)，則粉塵(chen)會進(jin)入設(she)(she)備內(nei)部并堆(dui)積，這(zhe)將(jiang)防(fang)(fang)礙防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)氣(qi)(qi)(qi)(qi)(qi)設(she)(she)備的(de)安全運(yun)轉。當然也能(neng)夠將(jiang)氣(qi)(qi)(qi)(qi)(qi)體(ti)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)氣(qi)(qi)(qi)(qi)(qi)設(she)(she)備的(de)外(wai)殼防(fang)(fang)護(hu)(hu)(hu)等級(ji)(ji)進(jin)步而用(yong)(yong)于(yu)(yu)粉塵(chen)爆(bao)(bao)(bao)(bao)(bao)破風(feng)險場(chang)所(suo)，但這(zhe)是(shi)(shi)(shi)極不經(jing)濟的(de)，由于(yu)(yu)用(yong)(yong)于(yu)(yu)氣(qi)(qi)(qi)(qi)(qi)體(ti)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)的(de)隔爆(bao)(bao)(bao)(bao)(bao)、增(zeng)(zeng)安等功能(neng)被白白浪費了。 反過來，粉塵(chen)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)氣(qi)(qi)(qi)(qi)(qi)設(she)(she)備是(shi)(shi)(shi)否(fou)(fou)能(neng)夠用(yong)(yong)于(yu)(yu)氣(qi)(qi)(qi)(qi)(qi)體(ti)性爆(bao)(bao)(bao)(bao)(bao)破風(feng)險場(chang)所(suo)呢？答復是(shi)(shi)(shi)否(fou)(fou)定的(de)。由于(yu)(yu)粉塵(chen)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)氣(qi)(qi)(qi)(qi)(qi)設(she)(she)備僅僅外(wai)殼防(fang)(fang)護(hu)(hu)(hu)等級(ji)(ji)較高罷了，并不能(neng)阻撓爆(bao)(bao)(bao)(bao)(bao)破性氣(qi)(qi)(qi)(qi)(qi)體(ti)進(jin)入其殼內(nei)，又(you)無隔爆(bao)(bao)(bao)(bao)(bao)、增(zeng)(zeng)安等防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)辦法，所(suo)以這(zhe)兩種防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)氣(qi)(qi)(qi)(qi)(qi)設(she)(she)備決不能(neng)換用(yong)(yong)。 

三.誤(wu)區之三：農產品破(po)壞場所電氣設備毋需防(fang)爆 

這是現(xian)在廣闊(kuo)農(nong)(nong)(nong)村普遍存在的(de)(de)知(zhi)道誤區。其(qi)(qi)實有(you)(you)爆(bao)(bao)(bao)(bao)破(po)性(xing)風險的(de)(de)粉(fen)塵可(ke)(ke)分為如下(xia)四種：爆(bao)(bao)(bao)(bao)破(po)性(xing)粉(fen)塵、可(ke)(ke)燃性(xing)導電(dian)粉(fen)塵、可(ke)(ke)燃性(xing)非導電(dian)粉(fen)塵和可(ke)(ke)燃纖維(wei)。農(nong)(nong)(nong)產(chan)品(pin)粉(fen)塵即(ji)歸于(yu)可(ke)(ke)燃性(xing)非導電(dian)粉(fen)塵。以稞麥粉(fen)為例，其(qi)(qi)各項爆(bao)(bao)(bao)(bao)破(po)風險性(xing)指標竟同金(jin)屬中的(de)(de)紅磷(lin)粉(fen)適(shi)當。因而，農(nong)(nong)(nong)產(chan)品(pin)破(po)壞(huai)加工場(chang)所的(de)(de)防爆(bao)(bao)(bao)(bao)問題(ti)有(you)(you)必要引起(qi)滿足(zu)的(de)(de)注重，有(you)(you)必要選(xuan)用防爆(bao)(bao)(bao)(bao)電(dian)氣設(she)備。

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