防爆(bao)(bao)加熱(re)(re)(re)(re)管是一種消耗(hao)電(dian)能轉(zhuan)換為熱(re)(re)(re)(re)能,來對需加熱(re)(re)(re)(re)物料進行加熱(re)(re)(re)(re)。防爆(bao)(bao)加熱(re)(re)(re)(re)管是由外到(dao)里外殼(不繡(xiu)鋼(gang)/碳鋼(gang)/銅(tong)/鈦材(cai)等(deng)、發熱(re)(re)(re)(re)絲(鎳鉻鉛(qian)合金)、填充物(氧化鎂,作(zuo)(zuo)用(yong)是導熱(re)(re)(re)(re)、絕緣)、外殼(不繡(xiu)鋼(gang)、碳鋼(gang)、鈦材(cai)、銅(tong) 等(deng))、陶瓷封頭(作(zuo)(zuo)用(yong):絕緣)、防爆(bao)(bao)盒(he)組成(cheng)的。加熱(re)(re)(re)(re)管在(zai)工(gong)作(zuo)(zuo)中低溫流體介(jie)質(zhi)(zhi)通過管道在(zai)壓力(li)作(zuo)(zuo)用(yong)下進入其(qi)輸入口,沿著電(dian)加熱(re)(re)(re)(re)容(rong)器(qi)內部特定換熱(re)(re)(re)(re)流道,運用(yong)空氣電(dian)熱(re)(re)(re)(re)管的流體熱(re)(re)(re)(re)力(li)學原理設計(ji)的路(lu)徑,帶走空氣加熱(re)(re)(re)(re)管中的電(dian)熱(re)(re)(re)(re)元件(jian)工(gong)作(zuo)(zuo)中所產生(sheng)的高(gao)溫熱(re)(re)(re)(re)能量(liang),使空氣加熱(re)(re)(re)(re)管被加熱(re)(re)(re)(re)介(jie)質(zhi)(zhi)溫度(du)升(sheng)高(gao),加熱(re)(re)(re)(re)管出口得到(dao)工(gong)藝要求的高(gao)溫介(jie)質(zhi)(zhi)。
產品(pin)特(te)點
1.升溫(wen)時間在試(shi)驗電(dian)壓下,元件從(cong)環境(jing)溫(wen)度升至試(shi)驗溫(wen)度時間應不大于15min
2.額定(ding)(ding)(ding)功率偏差在充分發(fa)熱的(de)(de)條件(jian)(jian)下(xia),元件(jian)(jian)的(de)(de)額定(ding)(ding)(ding)功率的(de)(de)偏差應(ying)不超過下(xia)列規定(ding)(ding)(ding)的(de)(de)范圍(wei);對(dui)額定(ding)(ding)(ding)功率小于(yu)等于(yu)100W的(de)(de)元件(jian)(jian)為:士10%。對(dui)額定(ding)(ding)(ding)功率大于(yu)100W的(de)(de)元件(jian)(jian)為+5%~- 10%或(huo)10W,取兩者中的(de)(de)較(jiao)大值。
3.泄(xie)露電(dian)(dian)(dian)流冷態(tai)泄(xie)露電(dian)(dian)(dian)流以(yi)(yi)及水壓和密封試驗后泄(xie)露電(dian)(dian)(dian)流應不超過(guo)0.5mA工作溫度下的熱(re)態(tai)泄(xie)露電(dian)(dian)(dian)流應不超過(guo)公式中的計算(suan)值,但不超過(guo)5mA I=1/6 (tTX0.00001) I一 熱(re)態(tai)泄(xie)露電(dian)(dian)(dian)流mA t-發(fa)熱(re)長(chang)度mm T-工作溫度C多個元件(jian)串聯到電(dian)(dian)(dian)源中時,應以(yi)(yi)這一組元件(jian)為(wei) 整(zheng)體進行泄(xie)露電(dian)(dian)(dian)流試驗。
4. 絕緣(yuan)電阻(zu)(zu)出廠(chang)檢驗(yan)時冷態(tai)絕緣(yuan)電阻(zu)(zu)應不(bu)(bu)小(xiao)于(yu)50MQ密封試(shi)驗(yan)后,長(chang)期存(cun)放或者使用后的絕緣(yuan)電阻(zu)(zu)應不(bu)(bu)消與(yu)MQ工(gong)作(zuo)溫度(du)下的熱態(tai)絕緣(yuan)電阻(zu)(zu)應不(bu)(bu)低(di)于(yu)公式中的計算(suan)值,但(dan)應不(bu)(bu)小(xiao)于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)絕緣(yuan)電阻(zu)(zu)MQ t一-發 熱長(chang)度(du)mmT一工(gong)作(zuo)溫度(du)°C
5.絕緣耐壓強度元件應在規定的試驗條件和試驗電(dian)壓下保持1min,而無閃(shan)絡和擊穿現象
6.經受(shou)通(tong)斷電(dian)的(de)能力元(yuan)件應(ying)能在規定的(de)試驗(yan)條(tiao)件下經歷2000次通(tong)斷電(dian)試驗(yan),而不發生損壞