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皮帶流水線防止靜電危害的方法分析

2022-05-16 17:06:30

(1)接(jie)地(di)靜(jing)(jing)(jing)電(dian)(dian)(dian)危害(hai)防治方(fang)法,接(jie)地(di)是(shi)有用、經濟的(de)方(fang)法。過程中(zhong)(zhong)(zhong)由于靜(jing)(jing)(jing)電(dian)(dian)(dian)的(de)沖突、感應或傳(chuan)導(dao),如果金(jin)屬(shu)設備(bei)、導(dao)電(dian)(dian)(dian)產品或人員身體的(de)接(jie)地(di)絕緣中(zhong)(zhong)(zhong)積聚電(dian)(dian)(dian)荷(he),積聚的(de)電(dian)(dian)(dian)荷(he)會在(zai)一次放電(dian)(dian)(dian)中(zhong)(zhong)(zhong)釋放能量。這(zhe)種(zhong)靜(jing)(jing)(jing)電(dian)(dian)(dian)放電(dian)(dian)(dian)是(shi)靜(jing)(jing)(jing)電(dian)(dian)(dian)損(sun)壞的(de)主要(yao)原(yuan)因。其預防方(fang)法是(shi)將所有導(dao)電(dian)(dian)(dian)目標接(jie)地(di),并(bing)堅持低接(jie)地(di)電(dian)(dian)(dian)阻,將儲存在(zai)金(jin)屬(shu)設備(bei)、導(dao)電(dian)(dian)(dian)產品或人員身體中(zhong)(zhong)(zhong)的(de)電(dian)(dian)(dian)荷(he)靈活(huo)地(di)接(jie)地(di),以防止靜(jing)(jing)(jing)電(dian)(dian)(dian)損(sun)壞的(de)發生(sheng)。


根(gen)據相關研究(jiu),一(yi)般(ban)工作場所存在易燃蒸氣、絕緣金(jin)屬設(she)備/部件、導電(dian)(dian)產品或人員身(shen)體電(dian)(dian)位(wei)需要達到100V以上,方可(ke)能引燃放電(dian)(dian)周圍(wei)的易燃物質。因(yin)此,工廠(chang)內的絕緣金(jin)屬設(she)備/部件和導電(dian)(dian)產品均接地(di)(di)。接地(di)(di)電(dian)(dian)阻(zu)小于106Ω,足以將(jiang)積累的電(dian)(dian)荷迅(xun)速消散(san)到大地(di)(di),將(jiang)它(ta)們(men)的靜電(dian)(dian)電(dian)(dian)位(wei)降(jiang)低到100V以下(xia),從而防止靜電(dian)(dian)損壞。


(2)增加(jia)(jia)濕(shi)度(du)(du) 增加(jia)(jia)工作環(huan)境空(kong)氣(qi)的(de)相(xiang)對(dui)濕(shi)度(du)(du),也是(shi)傳統(tong)工業制造過(guo)程(cheng)中(zhong)常見的(de)靜電(dian)破壞(huai)預(yu)防方法。在(zai)高(gao)(gao)濕(shi)度(du)(du)(R.H. > 65 %)下,如果材(cai)料(liao)具有親(qin)(qin)水(shui)性表(biao)面,它只是(shi)簡單地(di)吸收空(kong)氣(qi)中(zhong)的(de)水(shui)分,從而降(jiang)低(di)(di)材(cai)料(liao)的(de)外電(dian)阻值(zhi),提高(gao)(gao)電(dian)荷(he)耗(hao)散率,較大限度(du)(du)地(di)減少(shao)電(dian)荷(he)積累程(cheng)度(du)(du)。這些包括棉花、紙和醋酸纖(xian)維(wei)素。在(zai)工廠過(guo)程(cheng)中(zhong),一般采(cai)用加(jia)(jia)濕(shi)器、地(di)面澆水(shui)或水(shui)蒸氣(qi)噴射(she)等方式來增加(jia)(jia)作業環(huan)境中(zhong)空(kong)氣(qi)的(de)相(xiang)對(dui)濕(shi)度(du)(du)。如果材(cai)料(liao)表(biao)面不(bu)(bu)(bu)是(shi)親(qin)(qin)水(shui)性的(de),就(jiu)不(bu)(bu)(bu)容(rong)易從空(kong)氣(qi)中(zhong)吸水(shui),所(suo)以不(bu)(bu)(bu)能降(jiang)低(di)(di)材(cai)料(liao)的(de)外電(dian)阻值(zhi),也就(jiu)不(bu)(bu)(bu)能提高(gao)(gao)電(dian)荷(he)耗(hao)散率。這類物質包括一些人造聚合物如ABS(丙(bing)(bing)烯(xi)(xi)腈(jing)-丁二(er)烯(xi)(xi)-苯(ben)乙(yi)烯(xi)(xi)、丙(bing)(bing)烯(xi)(xi)腈(jing)-丁二(er)烯(xi)(xi)-苯(ben)乙(yi)烯(xi)(xi))、特氟(fu)隆(Teflon, fluorocarbon polymer)等。這種高(gao)(gao)拒水(shui)性材(cai)料(liao)需要相(xiang)對(dui)濕(shi)度(du)(du)提高(gao)(gao)到80%,甚(shen)至90%以上,為有效(xiao)降(jiang)低(di)(di)材(cai)料(liao)的(de)外電(dian)阻值(zhi),將(jiang)電(dian)荷(he)積累降(jiang)至較低(di)(di)。

皮帶流水線報價

(3) 材(cai)(cai)料(liao)(liao)在(zai)(zai)抗靜(jing)(jing)(jing)電(dian)(dian)數據(ju)(ju)過(guo)程中(zhong)積累的(de)(de)靜(jing)(jing)(jing)電(dian)(dian)會通(tong)過(guo)傳導(dao)路徑(jing)向大(da)地(di)擴(kuo)散。如(ru)(ru)果(guo)傳導(dao)路徑(jing)是(shi)絕緣(yuan)材(cai)(cai)料(liao)(liao)(低電(dian)(dian)導(dao)率(lv)),則(ze)靜(jing)(jing)(jing)電(dian)(dian)耗散率(lv)低,如(ru)(ru)果(guo)傳導(dao)路徑(jing)是(shi)導(dao)電(dian)(dian)材(cai)(cai)料(liao)(liao)(高電(dian)(dian)導(dao)率(lv)),則(ze)靜(jing)(jing)(jing)電(dian)(dian)耗散率(lv)高。如(ru)(ru)果(guo)物質(zhi)的(de)(de)表(biao)面電(dian)(dian)阻(zu)(zu)率(lv)小于(yu)(yu) 1011 ω /m2 或(huo)體積電(dian)(dian)阻(zu)(zu)率(lv)小于(yu)(yu) 1010 ω /m2,則(ze)可以防止過(guo)大(da)的(de)(de)靜(jing)(jing)(jing)電(dian)(dian)。這些物質(zhi)被稱為抗靜(jing)(jing)(jing)電(dian)(dian)材(cai)(cai)料(liao)(liao)。但在(zai)(zai)含(han)有易(yi)燃(ran)物質(zhi)的(de)(de)工作(zuo)場所,抗靜(jing)(jing)(jing)電(dian)(dian)數據(ju)(ju)的(de)(de)表(biao)面電(dian)(dian)阻(zu)(zu)率(lv)應小于(yu)(yu)108 ω /m2或(huo)體積電(dian)(dian)阻(zu)(zu)率(lv)應小于(yu)(yu)106 ω /m2。工業過(guo)程中(zhong)使用的(de)(de)信息可以通(tong)過(guo)以下方式(shi)進行抗靜(jing)(jing)(jing)電(dian)(dian):材(cai)(cai)料(liao)(liao)本身具(ju)有抗靜(jing)(jing)(jing)電(dian)(dian)性能(如(ru)(ru)棉(mian)花、木材(cai)(cai)、紙張和土(tu)壤等(deng)),抗靜(jing)(jing)(jing)電(dian)(dian)材(cai)(cai)料(liao)(liao)(如(ru)(ru)碳(tan)粉(fen)(fen)、抗靜(jing)(jing)(jing)電(dian)(dian)劑(ji)等(deng))被涂(tu)敷(fu)在(zai)(zai)絕緣(yuan)材(cai)(cai)料(liao)(liao)的(de)(de)表(biao)面,在(zai)(zai)絕緣(yuan)材(cai)(cai)料(liao)(liao)的(de)(de)生產過(guo)程中(zhong)涉及導(dao)電(dian)(dian)或(huo)抗靜(jing)(jing)(jing)電(dian)(dian)材(cai)(cai)料(liao)(liao)(如(ru)(ru)碳(tan)粉(fen)(fen)、金屬、抗靜(jing)(jing)(jing)電(dian)(dian)劑(ji)、導(dao)電(dian)(dian)纖維(wei)等(deng))皮帶流水線報價。


(4)靜電(dian)(dian)消除(chu)器(qi)利用(yong)高壓(ya)攻擊(ji)空氣中(zhong)的(de)(de)(de)帶(dai)電(dian)(dian)離(li)子。因為相(xiang)(xiang)反的(de)(de)(de)電(dian)(dian)荷(he)會相(xiang)(xiang)互吸引(yin)(yin)而中(zhong)和,離(li)子可以中(zhong)和靜電(dian)(dian)物體的(de)(de)(de)電(dian)(dian)荷(he),使(shi)電(dian)(dian)荷(he)積累程度(du)降(jiang)到較(jiao)低,從而不會發生(sheng)靜電(dian)(dian)放(fang)(fang)電(dian)(dian)。靜電(dian)(dian)消除(chu)器(qi)大致可分(fen)為無源型(xing)(xing)、自(zi)動型(xing)(xing)和輻射源型(xing)(xing)三種。在(zai)選擇靜電(dian)(dian)消除(chu)器(qi)時,需要(yao)考慮使(shi)用(yong)環(huan)境因素(su),以較(jiao)大限度(du)地發揮靜電(dian)(dian)消除(chu)器(qi)的(de)(de)(de)作用(yong)。一般來說,靜電(dian)(dian)消除(chu)器(qi)的(de)(de)(de)位(wei)置應靠近帶(dai)靜電(dian)(dian)的(de)(de)(de)物體,遠離(li)接地金(jin)屬目標,以較(jiao)大限度(du)地發揮靜電(dian)(dian)消除(chu)器(qi)的(de)(de)(de)作用(yong)。此(ci)外,還要(yao)注意電(dian)(dian)離(li)引(yin)(yin)起(qi)的(de)(de)(de)臭氧工業衛生(sheng)問(wen)題,以及(ji)高壓(ya)電(dian)(dian)源和帶(dai)電(dian)(dian)體短(duan)路放(fang)(fang)電(dian)(dian)引(yin)(yin)起(qi)的(de)(de)(de)工業安(an)全(quan)問(wen)題。


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