防爆(bao)加(jia)(jia)熱(re)(re)(re)(re)管(guan)是(shi)一種消耗電(dian)(dian)(dian)能轉換為熱(re)(re)(re)(re)能,來對需加(jia)(jia)熱(re)(re)(re)(re)物(wu)料進行加(jia)(jia)熱(re)(re)(re)(re)。防爆(bao)加(jia)(jia)熱(re)(re)(re)(re)管(guan)是(shi)由外到里外殼(不繡(xiu)鋼(gang)/碳鋼(gang)/銅/鈦材等、發熱(re)(re)(re)(re)絲(鎳鉻鉛(qian)合金)、填(tian)充物(wu)(氧化鎂,作(zuo)用(yong)(yong)是(shi)導熱(re)(re)(re)(re)、絕(jue)(jue)緣)、外殼(不繡(xiu)鋼(gang)、碳鋼(gang)、鈦材、銅 等)、陶瓷封頭(作(zuo)用(yong)(yong):絕(jue)(jue)緣)、防爆(bao)盒組(zu)成的。加(jia)(jia)熱(re)(re)(re)(re)管(guan)在工(gong)作(zuo)中低溫(wen)流(liu)體(ti)(ti)介質(zhi)通過管(guan)道(dao)在壓力作(zuo)用(yong)(yong)下進入(ru)其輸入(ru)口(kou),沿著電(dian)(dian)(dian)加(jia)(jia)熱(re)(re)(re)(re)容器內部特定(ding)換熱(re)(re)(re)(re)流(liu)道(dao),運用(yong)(yong)空氣(qi)電(dian)(dian)(dian)熱(re)(re)(re)(re)管(guan)的流(liu)體(ti)(ti)熱(re)(re)(re)(re)力學原理設(she)計的路徑,帶(dai)走空氣(qi)加(jia)(jia)熱(re)(re)(re)(re)管(guan)中的電(dian)(dian)(dian)熱(re)(re)(re)(re)元(yuan)件工(gong)作(zuo)中所產(chan)生(sheng)的高(gao)溫(wen)熱(re)(re)(re)(re)能量,使空氣(qi)加(jia)(jia)熱(re)(re)(re)(re)管(guan)被加(jia)(jia)熱(re)(re)(re)(re)介質(zhi)溫(wen)度(du)升高(gao),加(jia)(jia)熱(re)(re)(re)(re)管(guan)出(chu)口(kou)得到工(gong)藝要求(qiu)的高(gao)溫(wen)介質(zhi)。
產品特(te)點
1.升溫時(shi)間(jian)在試(shi)驗(yan)電壓下,元件(jian)從環境溫度(du)升至(zhi)試(shi)驗(yan)溫度(du)時(shi)間(jian)應不大于15min
2.額(e)(e)定功(gong)(gong)(gong)率(lv)(lv)偏差在充分發熱的(de)(de)(de)條件下,元(yuan)件的(de)(de)(de)額(e)(e)定功(gong)(gong)(gong)率(lv)(lv)的(de)(de)(de)偏差應不超過(guo)下列規定的(de)(de)(de)范圍;對額(e)(e)定功(gong)(gong)(gong)率(lv)(lv)小于(yu)(yu)等于(yu)(yu)100W的(de)(de)(de)元(yuan)件為:士10%。對額(e)(e)定功(gong)(gong)(gong)率(lv)(lv)大(da)(da)于(yu)(yu)100W的(de)(de)(de)元(yuan)件為+5%~- 10%或10W,取兩者中的(de)(de)(de)較(jiao)大(da)(da)值。
3.泄(xie)露(lu)(lu)(lu)電(dian)(dian)流冷態(tai)泄(xie)露(lu)(lu)(lu)電(dian)(dian)流以(yi)及水壓(ya)和密封(feng)試驗(yan)后泄(xie)露(lu)(lu)(lu)電(dian)(dian)流應不超(chao)(chao)過(guo)0.5mA工作(zuo)溫度(du)下的(de)熱(re)(re)態(tai)泄(xie)露(lu)(lu)(lu)電(dian)(dian)流應不超(chao)(chao)過(guo)公(gong)式中的(de)計算值,但不超(chao)(chao)過(guo)5mA I=1/6 (tTX0.00001) I一 熱(re)(re)態(tai)泄(xie)露(lu)(lu)(lu)電(dian)(dian)流mA t-發熱(re)(re)長度(du)mm T-工作(zuo)溫度(du)C多個元件串聯到電(dian)(dian)源中時,應以(yi)這一組元件為 整體(ti)進行泄(xie)露(lu)(lu)(lu)電(dian)(dian)流試驗(yan)。
4. 絕(jue)(jue)緣電(dian)阻(zu)(zu)(zu)出廠檢(jian)驗時冷(leng)態(tai)(tai)絕(jue)(jue)緣電(dian)阻(zu)(zu)(zu)應不小(xiao)(xiao)于50MQ密封試驗后,長(chang)期存放(fang)或者(zhe)使用后的絕(jue)(jue)緣電(dian)阻(zu)(zu)(zu)應不消與MQ工作溫(wen)度下(xia)的熱態(tai)(tai)絕(jue)(jue)緣電(dian)阻(zu)(zu)(zu)應不低(di)于公式中的計算值(zhi),但應不小(xiao)(xiao)于1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)(tai)絕(jue)(jue)緣電(dian)阻(zu)(zu)(zu)MQ t一-發 熱長(chang)度mmT一工作溫(wen)度°C
5.絕緣耐(nai)壓強(qiang)度元件應在規定的試驗條(tiao)件和試驗電壓下保(bao)持(chi)1min,而無閃絡和擊(ji)穿現象
6.經受通(tong)斷電的能力元件應能在規定的試驗(yan)條(tiao)件下經歷2000次通(tong)斷電試驗(yan),而不發生損壞