LED防爆燈原理
LED防(fang)爆(bao)(bao)(bao)(bao)(bao)(bao)燈的(de)(de)(de)(de)原理同防(fang)爆(bao)(bao)(bao)(bao)(bao)(bao)燈相同,其原理根據歐洲(zhou)標準(zhun)EN13463-1:2002《爆(bao)(bao)(bao)(bao)(bao)(bao)炸(zha)性(xing)(xing)環境用(yong)(yong)(yong)非(fei)電(dian)氣設(she)備(bei)(bei)第1部分:基本方(fang)法與要(yao)求》的(de)(de)(de)(de)防(fang)爆(bao)(bao)(bao)(bao)(bao)(bao)概念(nian)和防(fang)火(huo)類型(xing),隔(ge)爆(bao)(bao)(bao)(bao)(bao)(bao)型(xing)是(shi)采取措施允許內(nei)部爆(bao)(bao)(bao)(bao)(bao)(bao)炸(zha)并(bing)阻止火(huo)焰傳(chuan)爆(bao)(bao)(bao)(bao)(bao)(bao)的(de)(de)(de)(de)一種(zhong)(zhong)防(fang)爆(bao)(bao)(bao)(bao)(bao)(bao)型(xing)式,是(shi)最常(chang)用(yong)(yong)(yong)的(de)(de)(de)(de)一種(zhong)(zhong)防(fang)爆(bao)(bao)(bao)(bao)(bao)(bao)類型(xing)。由于這(zhe)種(zhong)(zhong)防(fang)爆(bao)(bao)(bao)(bao)(bao)(bao)類型(xing)的(de)(de)(de)(de)燈具(ju)外(wai)殼一般使用(yong)(yong)(yong)金(jin)屬材料制造,散熱性(xing)(xing)好,外(wai)殼強度(du)高和耐(nai)用(yong)(yong)(yong)性(xing)(xing)好,很受用(yong)(yong)(yong)戶歡迎。而且,許多增安型(xing)防(fang)爆(bao)(bao)(bao)(bao)(bao)(bao)燈具(ju)部件(jian),如燈座、聯鎖開關等,也采用(yong)(yong)(yong)隔(ge)爆(bao)(bao)(bao)(bao)(bao)(bao)型(xing)結構(gou)。具(ju)有隔(ge)爆(bao)(bao)(bao)(bao)(bao)(bao)外(wai)殼的(de)(de)(de)(de)電(dian)氣設(she)備(bei)(bei)稱為(wei)隔(ge)爆(bao)(bao)(bao)(bao)(bao)(bao)型(xing)電(dian)氣設(she)備(bei)(bei)。如果爆(bao)(bao)(bao)(bao)(bao)(bao)炸(zha)性(xing)(xing)氣體混合物進入隔(ge)爆(bao)(bao)(bao)(bao)(bao)(bao)外(wai)殼并(bing)被(bei)點(dian)燃,隔(ge)爆(bao)(bao)(bao)(bao)(bao)(bao)外(wai)殼能承(cheng)受內(nei)部爆(bao)(bao)(bao)(bao)(bao)(bao)炸(zha)性(xing)(xing)氣體混合物的(de)(de)(de)(de)爆(bao)(bao)(bao)(bao)(bao)(bao)炸(zha)壓力,并(bing)阻止內(nei)部的(de)(de)(de)(de)爆(bao)(bao)(bao)(bao)(bao)(bao)炸(zha)向(xiang)外(wai)殼周圍爆(bao)(bao)(bao)(bao)(bao)(bao)炸(zha)性(xing)(xing)混合物傳(chuan)播(bo)。這(zhe)是(shi)一種(zhong)(zhong)間隙(xi)防(fang)爆(bao)(bao)(bao)(bao)(bao)(bao)原理,即利用(yong)(yong)(yong)金(jin)屬間隙(xi)能阻止爆(bao)(bao)(bao)(bao)(bao)(bao)炸(zha)火(huo)焰的(de)(de)(de)(de)傳(chuan)播(bo)和冷卻(que)爆(bao)(bao)(bao)(bao)(bao)(bao)炸(zha)產物的(de)(de)(de)(de)溫(wen)度(du),達到火(huo)焰熄滅和降(jiang)溫(wen),抑制爆(bao)(bao)(bao)(bao)(bao)(bao)炸(zha)的(de)(de)(de)(de)擴(kuo)展的(de)(de)(de)(de)原理設(she)計的(de)(de)(de)(de)一種(zhong)(zhong)構(gou)造。
LED防爆燈使用注意
1、關(guan)蓋(gai)前應(ying)用(yong)濕(shi)布(不能過分濕(shi))輕揩燈具(ju)回光和透明件,以(yi)提(ti)高燈具(ju)光效。在隔爆結合面上應(ying)薄薄地(di)涂上一(yi)層204-1置換型(xing)防(fang)銹油,關(guan)蓋(gai)時應(ying)注意密(mi)封圈是否在原(yuan)來的(de)位置上起到(dao)密(mi)封作用(yong)。
2、開蓋后應順便檢查隔(ge)爆(bao)結合面是(shi)否(fou)(fou)完好,橡(xiang)膠密封件(jian)是(shi)否(fou)(fou)變(bian)硬或(huo)變(bian)粘,導線絕緣層是(shi)否(fou)(fou)發綠和(he)碳(tan)化,絕緣件(jian)和(he)電氣元件(jian)是(shi)否(fou)(fou)有變(bian)形和(he)焦痕。如發現這些問題,應及時維修更換。
3、光(guang)源損壞應及時關(guan)燈,通知更換(huan),以(yi)免由于(yu)光(guang)源不(bu)能啟動而使鎮流器(qi)等電氣(qi)元(yuan)件長期處于(yu)異常狀態。
4、潮濕環境(jing)中(zhong)使用(yong)的燈(deng)具燈(deng)腔內如有(you)積水應及(ji)時(shi)清除,更換密封(feng)部件,確保(bao)外殼防(fang)護性能。
5、打開燈(deng)罩(zhao)時(shi),應按警告牌要(yao)求,斷電源后開蓋。
6、檢查透(tou)明件有(you)(you)無(wu)受過異物(wu)沖擊的痕跡,保護(hu)網有(you)(you)無(wu)松動、脫焊、腐蝕(shi)等。如有(you)(you),應停(ting)止使用,及時維修(xiu)更(geng)換(huan)。
7、定期(qi)消除防(fang)爆(bao)燈具外(wai)(wai)(wai)殼上的(de)積塵和(he)污垢,提高(gao)燈具光效和(he)散熱(re)性能。清(qing)潔方式(shi)可(ke)根據燈具外(wai)(wai)(wai)殼防(fang)護能力,采用(yong)噴水(shui)(shui)(燈具上標(biao)志(zhi)陰(yin)以(yi)上)或用(yong)濕布揩。噴水(shui)(shui)清(qing)洗時,應(ying)切(qie)斷電源(yuan),嚴禁(jin)用(yong)干布擦洗燈具塑料(liao)外(wai)(wai)(wai)殼(透明(ming)件(jian)),防(fang)止產生靜電。
8、燈具(ju)密封的部分不應經常拆(chai)卸和(he)打(da)開。