防爆加(jia)(jia)(jia)熱(re)(re)(re)管(guan)是(shi)(shi)一種消耗電能轉換為(wei)熱(re)(re)(re)能,來對需加(jia)(jia)(jia)熱(re)(re)(re)物料進行加(jia)(jia)(jia)熱(re)(re)(re)。防爆加(jia)(jia)(jia)熱(re)(re)(re)管(guan)是(shi)(shi)由外(wai)到(dao)里外(wai)殼(不繡鋼/碳鋼/銅(tong)(tong)/鈦材等(deng)、發熱(re)(re)(re)絲(鎳鉻鉛合金)、填充(chong)物(氧化鎂(mei),作(zuo)用(yong)(yong)是(shi)(shi)導熱(re)(re)(re)、絕(jue)(jue)緣(yuan)(yuan))、外(wai)殼(不繡鋼、碳鋼、鈦材、銅(tong)(tong) 等(deng))、陶瓷封(feng)頭(作(zuo)用(yong)(yong):絕(jue)(jue)緣(yuan)(yuan))、防爆盒組成的。加(jia)(jia)(jia)熱(re)(re)(re)管(guan)在工(gong)作(zuo)中(zhong)低溫(wen)流體介(jie)質通過管(guan)道在壓(ya)力作(zuo)用(yong)(yong)下進入(ru)其輸入(ru)口,沿著電加(jia)(jia)(jia)熱(re)(re)(re)容(rong)器內部特定換熱(re)(re)(re)流道,運用(yong)(yong)空氣電熱(re)(re)(re)管(guan)的流體熱(re)(re)(re)力學原理設(she)計的路(lu)徑(jing),帶(dai)走空氣加(jia)(jia)(jia)熱(re)(re)(re)管(guan)中(zhong)的電熱(re)(re)(re)元(yuan)件工(gong)作(zuo)中(zhong)所(suo)產生的高溫(wen)熱(re)(re)(re)能量,使空氣加(jia)(jia)(jia)熱(re)(re)(re)管(guan)被(bei)加(jia)(jia)(jia)熱(re)(re)(re)介(jie)質溫(wen)度升高,加(jia)(jia)(jia)熱(re)(re)(re)管(guan)出(chu)口得到(dao)工(gong)藝(yi)要求的高溫(wen)介(jie)質。
產品特點
1.升溫(wen)時(shi)間在試(shi)驗(yan)電壓(ya)下(xia),元件(jian)從環(huan)境溫(wen)度升至試(shi)驗(yan)溫(wen)度時(shi)間應不(bu)大于15min
2.額定(ding)功(gong)率(lv)偏差(cha)在充(chong)分發(fa)熱的條件(jian)下,元(yuan)件(jian)的額定(ding)功(gong)率(lv)的偏差(cha)應不超過下列規定(ding)的范圍;對(dui)額定(ding)功(gong)率(lv)小于等于100W的元(yuan)件(jian)為:士10%。對(dui)額定(ding)功(gong)率(lv)大于100W的元(yuan)件(jian)為+5%~- 10%或10W,取兩(liang)者中的較(jiao)大值。
3.泄(xie)(xie)露(lu)電(dian)(dian)(dian)流冷(leng)態泄(xie)(xie)露(lu)電(dian)(dian)(dian)流以及水壓和密封(feng)試驗后泄(xie)(xie)露(lu)電(dian)(dian)(dian)流應(ying)不超(chao)過(guo)0.5mA工作溫度下的熱態泄(xie)(xie)露(lu)電(dian)(dian)(dian)流應(ying)不超(chao)過(guo)公(gong)式(shi)中的計算(suan)值,但(dan)不超(chao)過(guo)5mA I=1/6 (tTX0.00001) I一(yi) 熱態泄(xie)(xie)露(lu)電(dian)(dian)(dian)流mA t-發熱長度mm T-工作溫度C多個元件串(chuan)聯到電(dian)(dian)(dian)源中時,應(ying)以這一(yi)組(zu)元件為 整體(ti)進行泄(xie)(xie)露(lu)電(dian)(dian)(dian)流試驗。
4. 絕緣(yuan)(yuan)電阻出(chu)廠(chang)檢驗時冷(leng)態絕緣(yuan)(yuan)電阻應(ying)(ying)不小于50MQ密封試驗后,長期(qi)存放(fang)或者使用后的(de)絕緣(yuan)(yuan)電阻應(ying)(ying)不消與(yu)MQ工(gong)作(zuo)溫度(du)下的(de)熱(re)態絕緣(yuan)(yuan)電阻應(ying)(ying)不低于公式中的(de)計(ji)算值,但(dan)應(ying)(ying)不小于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態絕緣(yuan)(yuan)電阻MQ t一(yi)-發 熱(re)長度(du)mmT一(yi)工(gong)作(zuo)溫度(du)°C
5.絕(jue)緣耐壓(ya)強度元(yuan)件應(ying)在規(gui)定的(de)試驗條件和試驗電壓(ya)下(xia)保持1min,而(er)無閃絡和擊穿現象(xiang)
6.經受(shou)通(tong)斷(duan)電的能(neng)力元件(jian)應能(neng)在(zai)規定的試驗(yan)條件(jian)下經歷2000次通(tong)斷(duan)電試驗(yan),而不發生損壞