防爆加熱(re)(re)(re)(re)(re)(re)管(guan)(guan)(guan)(guan)是(shi)一(yi)種消耗電能(neng)(neng)轉(zhuan)換(huan)為熱(re)(re)(re)(re)(re)(re)能(neng)(neng),來對需加熱(re)(re)(re)(re)(re)(re)物(wu)料進行(xing)加熱(re)(re)(re)(re)(re)(re)。防爆加熱(re)(re)(re)(re)(re)(re)管(guan)(guan)(guan)(guan)是(shi)由外到里外殼(ke)(不繡(xiu)鋼/碳鋼/銅(tong)/鈦材等(deng)、發熱(re)(re)(re)(re)(re)(re)絲(鎳鉻(ge)鉛合金(jin))、填充(chong)物(wu)(氧化(hua)鎂,作(zuo)用是(shi)導熱(re)(re)(re)(re)(re)(re)、絕(jue)緣)、外殼(ke)(不繡(xiu)鋼、碳鋼、鈦材、銅(tong) 等(deng))、陶瓷封頭(tou)(作(zuo)用:絕(jue)緣)、防爆盒組成(cheng)的。加熱(re)(re)(re)(re)(re)(re)管(guan)(guan)(guan)(guan)在工(gong)作(zuo)中低溫流(liu)體介(jie)質通(tong)過管(guan)(guan)(guan)(guan)道在壓力作(zuo)用下進入其輸入口,沿著電加熱(re)(re)(re)(re)(re)(re)容器內部(bu)特(te)定換(huan)熱(re)(re)(re)(re)(re)(re)流(liu)道,運用空(kong)氣(qi)電熱(re)(re)(re)(re)(re)(re)管(guan)(guan)(guan)(guan)的流(liu)體熱(re)(re)(re)(re)(re)(re)力學原理設計的路徑,帶走空(kong)氣(qi)加熱(re)(re)(re)(re)(re)(re)管(guan)(guan)(guan)(guan)中的電熱(re)(re)(re)(re)(re)(re)元件工(gong)作(zuo)中所產(chan)生的高溫熱(re)(re)(re)(re)(re)(re)能(neng)(neng)量,使空(kong)氣(qi)加熱(re)(re)(re)(re)(re)(re)管(guan)(guan)(guan)(guan)被加熱(re)(re)(re)(re)(re)(re)介(jie)質溫度升高,加熱(re)(re)(re)(re)(re)(re)管(guan)(guan)(guan)(guan)出口得到工(gong)藝要求的高溫介(jie)質。
產品特(te)點(dian)
1.升(sheng)溫時間在試驗電(dian)壓下(xia),元件從(cong)環境溫度升(sheng)至試驗溫度時間應不(bu)大于15min
2.額(e)定功(gong)率(lv)(lv)偏差(cha)在(zai)充分發熱的條(tiao)件(jian)下,元件(jian)的額(e)定功(gong)率(lv)(lv)的偏差(cha)應不超過下列規定的范圍;對(dui)(dui)額(e)定功(gong)率(lv)(lv)小于(yu)等于(yu)100W的元件(jian)為:士10%。對(dui)(dui)額(e)定功(gong)率(lv)(lv)大于(yu)100W的元件(jian)為+5%~- 10%或10W,取(qu)兩者中的較大值。
3.泄(xie)(xie)(xie)(xie)露電(dian)(dian)流(liu)冷態(tai)泄(xie)(xie)(xie)(xie)露電(dian)(dian)流(liu)以及水壓和密封試驗后泄(xie)(xie)(xie)(xie)露電(dian)(dian)流(liu)應不超(chao)過(guo)0.5mA工作溫(wen)度(du)下的熱態(tai)泄(xie)(xie)(xie)(xie)露電(dian)(dian)流(liu)應不超(chao)過(guo)公式中的計(ji)算值(zhi),但不超(chao)過(guo)5mA I=1/6 (tTX0.00001) I一 熱態(tai)泄(xie)(xie)(xie)(xie)露電(dian)(dian)流(liu)mA t-發熱長度(du)mm T-工作溫(wen)度(du)C多(duo)個元(yuan)件串聯(lian)到電(dian)(dian)源中時(shi),應以這一組元(yuan)件為 整體進行泄(xie)(xie)(xie)(xie)露電(dian)(dian)流(liu)試驗。
4. 絕(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)出廠(chang)檢驗時冷態絕(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)應(ying)(ying)不(bu)小(xiao)于50MQ密封試驗后,長期(qi)存放(fang)或者使用后的(de)絕(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)應(ying)(ying)不(bu)消與MQ工(gong)作溫度下的(de)熱態絕(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)應(ying)(ying)不(bu)低于公(gong)式中的(de)計(ji)算(suan)值,但(dan)應(ying)(ying)不(bu)小(xiao)于1MQ R=「(10-0.015T) /t」X0.001 R熱態絕(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)MQ t一(yi)-發 熱長度mmT一(yi)工(gong)作溫度°C
5.絕緣耐壓強度元件應在規(gui)定的(de)試(shi)驗條(tiao)件和試(shi)驗電壓下保持1min,而無(wu)閃絡(luo)和擊穿現象(xiang)
6.經(jing)受通(tong)斷電的能力元件應能在規定的試驗(yan)(yan)條件下經(jing)歷2000次通(tong)斷電試驗(yan)(yan),而不發生損(sun)壞