防爆加(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)是一種消(xiao)耗電(dian)能(neng)轉換為熱(re)(re)(re)能(neng)，來對需加(jia)(jia)熱(re)(re)(re)物(wu)料進行加(jia)(jia)熱(re)(re)(re)。防爆加(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)是由外(wai)到(dao)里外(wai)殼（不繡鋼(gang)(gang)/碳鋼(gang)(gang)/銅/鈦材等、發熱(re)(re)(re)絲（鎳鉻鉛(qian)合(he)金(jin)）、填充(chong)物(wu)（氧化鎂，作(zuo)用是導熱(re)(re)(re)、絕(jue)緣）、外(wai)殼（不繡鋼(gang)(gang)、碳鋼(gang)(gang)、鈦材、銅  等）、陶瓷(ci)封頭（作(zuo)用：絕(jue)緣）、防爆盒組成的(de)。加(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)在(zai)(zai)工(gong)(gong)作(zuo)中低溫流(liu)(liu)體(ti)介質通過管(guan)(guan)(guan)道在(zai)(zai)壓力(li)作(zuo)用下進入(ru)其(qi)輸入(ru)口，沿著電(dian)加(jia)(jia)熱(re)(re)(re)容器(qi)內部特定換熱(re)(re)(re)流(liu)(liu)道，運用空氣(qi)(qi)電(dian)熱(re)(re)(re)管(guan)(guan)(guan)的(de)流(liu)(liu)體(ti)熱(re)(re)(re)力(li)學原理設計(ji)的(de)路(lu)徑，帶(dai)走空氣(qi)(qi)加(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)中的(de)電(dian)熱(re)(re)(re)元(yuan)件工(gong)(gong)作(zuo)中所產生(sheng)的(de)高溫熱(re)(re)(re)能(neng)量，使空氣(qi)(qi)加(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)被加(jia)(jia)熱(re)(re)(re)介質溫度升高，加(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)出口得到(dao)工(gong)(gong)藝(yi)要(yao)求(qiu)的(de)高溫介質。

產品特(te)點

1.升溫時(shi)間在試驗電壓下，元件從環(huan)境溫度升至試驗溫度時(shi)間應不大于15min

2.額定(ding)功率偏差(cha)在充分發(fa)熱的(de)條件(jian)下，元(yuan)件(jian)的(de)額定(ding)功率的(de)偏差(cha)應不超過下列規定(ding)的(de)范圍;對(dui)額定(ding)功率小于等于100W的(de)元(yuan)件(jian)為:士(shi)10%。對(dui)額定(ding)功率大于100W的(de)元(yuan)件(jian)為+5%~- 10%或10W,取(qu)兩者中的(de)較大值(zhi)。

3.泄(xie)露電(dian)(dian)(dian)(dian)(dian)流冷(leng)態(tai)泄(xie)露電(dian)(dian)(dian)(dian)(dian)流以及(ji)水壓和密封試(shi)驗(yan)后(hou)泄(xie)露電(dian)(dian)(dian)(dian)(dian)流應(ying)不(bu)(bu)超過0.5mA工作(zuo)溫度下(xia)的熱(re)(re)態(tai)泄(xie)露電(dian)(dian)(dian)(dian)(dian)流應(ying)不(bu)(bu)超過公式中的計算(suan)值，但(dan)不(bu)(bu)超過5mA I=1/6 (tTX0.00001) I一(yi) 熱(re)(re)態(tai)泄(xie)露電(dian)(dian)(dian)(dian)(dian)流mA t-發熱(re)(re)長度mm T-工作(zuo)溫度C多個元件串聯到電(dian)(dian)(dian)(dian)(dian)源(yuan)中時，應(ying)以這(zhe)一(yi)組元件為(wei) 整體進(jin)行(xing)泄(xie)露電(dian)(dian)(dian)(dian)(dian)流試(shi)驗(yan)。

4. 絕(jue)(jue)緣電(dian)阻出廠檢驗時冷態(tai)絕(jue)(jue)緣電(dian)阻應(ying)不(bu)小于(yu)(yu)50MQ密封試驗后(hou)，長期存放或者使用后(hou)的絕(jue)(jue)緣電(dian)阻應(ying)不(bu)消與MQ工(gong)(gong)作溫度(du)下(xia)的熱(re)態(tai)絕(jue)(jue)緣電(dian)阻應(ying)不(bu)低于(yu)(yu)公(gong)式中的計算值，但應(ying)不(bu)小于(yu)(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態(tai)絕(jue)(jue)緣電(dian)阻MQ t一(yi)-發 熱(re)長度(du)mmT一(yi)工(gong)(gong)作溫度(du)°C

5.絕緣耐(nai)壓(ya)強度(du)元件應在規定(ding)的試(shi)驗條件和(he)試(shi)驗電壓(ya)下保持1min,而無閃絡和(he)擊穿(chuan)現象

6.經(jing)受通(tong)斷電的能(neng)力元件應能(neng)在(zai)規定的試驗條件下經(jing)歷2000次通(tong)斷電試驗，而不發生損壞(huai)