防爆(bao)加(jia)熱(re)(re)(re)管是一種(zhong)消耗電(dian)能轉(zhuan)換為熱(re)(re)(re)能,來對需加(jia)熱(re)(re)(re)物料進行加(jia)熱(re)(re)(re)。防爆(bao)加(jia)熱(re)(re)(re)管是由外到里外殼(ke)(不(bu)繡(xiu)鋼(gang)/碳(tan)鋼(gang)/銅(tong)(tong)/鈦材等(deng)、發(fa)熱(re)(re)(re)絲(鎳鉻鉛(qian)合金)、填充(chong)物(氧化鎂,作(zuo)用(yong)是導熱(re)(re)(re)、絕緣)、外殼(ke)(不(bu)繡(xiu)鋼(gang)、碳(tan)鋼(gang)、鈦材、銅(tong)(tong) 等(deng))、陶瓷封頭(作(zuo)用(yong):絕緣)、防爆(bao)盒(he)組成的。加(jia)熱(re)(re)(re)管在(zai)工(gong)作(zuo)中(zhong)低溫(wen)(wen)流體介(jie)質(zhi)通過管道在(zai)壓力作(zuo)用(yong)下進入(ru)其(qi)輸入(ru)口,沿(yan)著電(dian)加(jia)熱(re)(re)(re)容器內部特定換熱(re)(re)(re)流道,運用(yong)空氣電(dian)熱(re)(re)(re)管的流體熱(re)(re)(re)力學原理設計的路徑,帶走(zou)空氣加(jia)熱(re)(re)(re)管中(zhong)的電(dian)熱(re)(re)(re)元件工(gong)作(zuo)中(zhong)所產生的高溫(wen)(wen)熱(re)(re)(re)能量,使空氣加(jia)熱(re)(re)(re)管被加(jia)熱(re)(re)(re)介(jie)質(zhi)溫(wen)(wen)度升高,加(jia)熱(re)(re)(re)管出(chu)口得(de)到工(gong)藝要求的高溫(wen)(wen)介(jie)質(zhi)。
產品特(te)點
1.升溫時(shi)間(jian)在(zai)試驗電壓下,元件(jian)從(cong)環境溫度(du)升至試驗溫度(du)時(shi)間(jian)應不大(da)于15min
2.額定(ding)功(gong)(gong)率(lv)(lv)偏差(cha)在(zai)充分發熱的(de)條(tiao)件(jian)下(xia),元件(jian)的(de)額定(ding)功(gong)(gong)率(lv)(lv)的(de)偏差(cha)應不(bu)超(chao)過下(xia)列規定(ding)的(de)范圍;對額定(ding)功(gong)(gong)率(lv)(lv)小于(yu)等于(yu)100W的(de)元件(jian)為(wei):士10%。對額定(ding)功(gong)(gong)率(lv)(lv)大于(yu)100W的(de)元件(jian)為(wei)+5%~- 10%或10W,取兩者中的(de)較(jiao)大值(zhi)。
3.泄露(lu)電(dian)(dian)流冷態(tai)泄露(lu)電(dian)(dian)流以及水壓和(he)密封試驗后泄露(lu)電(dian)(dian)流應不(bu)(bu)超(chao)過(guo)(guo)0.5mA工作(zuo)溫度下(xia)的(de)熱(re)態(tai)泄露(lu)電(dian)(dian)流應不(bu)(bu)超(chao)過(guo)(guo)公式中的(de)計算值,但不(bu)(bu)超(chao)過(guo)(guo)5mA I=1/6 (tTX0.00001) I一 熱(re)態(tai)泄露(lu)電(dian)(dian)流mA t-發熱(re)長度mm T-工作(zuo)溫度C多(duo)個元(yuan)件串聯(lian)到電(dian)(dian)源中時(shi),應以這(zhe)一組元(yuan)件為 整體進行泄露(lu)電(dian)(dian)流試驗。
4. 絕(jue)(jue)緣(yuan)(yuan)電(dian)(dian)阻出廠檢驗(yan)(yan)時冷態(tai)(tai)絕(jue)(jue)緣(yuan)(yuan)電(dian)(dian)阻應(ying)不小于50MQ密封(feng)試驗(yan)(yan)后,長(chang)期存放(fang)或(huo)者使(shi)用后的絕(jue)(jue)緣(yuan)(yuan)電(dian)(dian)阻應(ying)不消與MQ工作溫度下(xia)的熱態(tai)(tai)絕(jue)(jue)緣(yuan)(yuan)電(dian)(dian)阻應(ying)不低(di)于公式(shi)中的計算值,但應(ying)不小于1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)(tai)絕(jue)(jue)緣(yuan)(yuan)電(dian)(dian)阻MQ t一-發 熱長(chang)度mmT一工作溫度°C
5.絕緣耐壓強(qiang)度元件(jian)(jian)應在規定的試驗條件(jian)(jian)和(he)試驗電(dian)壓下(xia)保持(chi)1min,而無閃絡和(he)擊穿(chuan)現象
6.經受通斷電的(de)能力元件(jian)應能在規定的(de)試(shi)驗(yan)(yan)條件(jian)下經歷(li)2000次(ci)通斷電試(shi)驗(yan)(yan),而不發生(sheng)損(sun)壞