防爆加(jia)熱(re)管(guan)(guan)(guan)(guan)是一種消耗電能轉換為熱(re)能,來對需(xu)加(jia)熱(re)物(wu)料進(jin)行加(jia)熱(re)。防爆加(jia)熱(re)管(guan)(guan)(guan)(guan)是由(you)外(wai)到里外(wai)殼(不(bu)繡鋼/碳鋼/銅(tong)/鈦(tai)材等、發熱(re)絲(鎳鉻(ge)鉛合金)、填(tian)充物(wu)(氧化鎂(mei),作(zuo)用(yong)是導熱(re)、絕緣)、外(wai)殼(不(bu)繡鋼、碳鋼、鈦(tai)材、銅(tong) 等)、陶瓷封(feng)頭(作(zuo)用(yong):絕緣)、防爆盒組成的。加(jia)熱(re)管(guan)(guan)(guan)(guan)在工作(zuo)中低溫(wen)流體介(jie)質(zhi)(zhi)通過管(guan)(guan)(guan)(guan)道在壓力作(zuo)用(yong)下進(jin)入(ru)其輸入(ru)口,沿著(zhu)電加(jia)熱(re)容器內部(bu)特定換熱(re)流道,運用(yong)空氣(qi)電熱(re)管(guan)(guan)(guan)(guan)的流體熱(re)力學原理設計(ji)的路(lu)徑(jing),帶走空氣(qi)加(jia)熱(re)管(guan)(guan)(guan)(guan)中的電熱(re)元(yuan)件工作(zuo)中所產生(sheng)的高(gao)溫(wen)熱(re)能量(liang),使空氣(qi)加(jia)熱(re)管(guan)(guan)(guan)(guan)被加(jia)熱(re)介(jie)質(zhi)(zhi)溫(wen)度升高(gao),加(jia)熱(re)管(guan)(guan)(guan)(guan)出口得(de)到工藝(yi)要求(qiu)的高(gao)溫(wen)介(jie)質(zhi)(zhi)。
產品特點(dian)
1.升(sheng)溫時間(jian)(jian)在試(shi)驗電壓下,元件從環(huan)境(jing)溫度(du)升(sheng)至試(shi)驗溫度(du)時間(jian)(jian)應不大于15min
2.額(e)(e)定(ding)功(gong)(gong)(gong)率偏(pian)差(cha)在充分發熱的(de)條件(jian)(jian)(jian)下(xia),元件(jian)(jian)(jian)的(de)額(e)(e)定(ding)功(gong)(gong)(gong)率的(de)偏(pian)差(cha)應不超過(guo)下(xia)列規定(ding)的(de)范圍;對(dui)額(e)(e)定(ding)功(gong)(gong)(gong)率小于(yu)(yu)(yu)等于(yu)(yu)(yu)100W的(de)元件(jian)(jian)(jian)為(wei):士10%。對(dui)額(e)(e)定(ding)功(gong)(gong)(gong)率大(da)于(yu)(yu)(yu)100W的(de)元件(jian)(jian)(jian)為(wei)+5%~- 10%或10W,取兩者中的(de)較(jiao)大(da)值。
3.泄(xie)(xie)露(lu)電(dian)(dian)流(liu)冷(leng)態(tai)泄(xie)(xie)露(lu)電(dian)(dian)流(liu)以及水壓和密封試驗(yan)后泄(xie)(xie)露(lu)電(dian)(dian)流(liu)應不超(chao)過0.5mA工(gong)作(zuo)溫(wen)度(du)下的(de)熱(re)(re)態(tai)泄(xie)(xie)露(lu)電(dian)(dian)流(liu)應不超(chao)過公式中(zhong)的(de)計算值,但不超(chao)過5mA I=1/6 (tTX0.00001) I一 熱(re)(re)態(tai)泄(xie)(xie)露(lu)電(dian)(dian)流(liu)mA t-發熱(re)(re)長度(du)mm T-工(gong)作(zuo)溫(wen)度(du)C多個元件串聯到電(dian)(dian)源(yuan)中(zhong)時,應以這一組元件為 整(zheng)體(ti)進行泄(xie)(xie)露(lu)電(dian)(dian)流(liu)試驗(yan)。
4. 絕(jue)緣(yuan)電(dian)阻(zu)出廠(chang)檢驗(yan)時(shi)冷態(tai)絕(jue)緣(yuan)電(dian)阻(zu)應不小于50MQ密封試驗(yan)后,長(chang)期存放或者使用后的絕(jue)緣(yuan)電(dian)阻(zu)應不消與MQ工作(zuo)(zuo)溫(wen)度下(xia)的熱態(tai)絕(jue)緣(yuan)電(dian)阻(zu)應不低于公式中(zhong)的計算值,但應不小于1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)絕(jue)緣(yuan)電(dian)阻(zu)MQ t一(yi)-發 熱長(chang)度mmT一(yi)工作(zuo)(zuo)溫(wen)度°C
5.絕緣(yuan)耐壓(ya)強度元件(jian)應在規(gui)定(ding)的試驗條件(jian)和(he)(he)試驗電壓(ya)下保持1min,而無閃絡和(he)(he)擊穿(chuan)現象
6.經受通(tong)斷(duan)電的(de)能力元(yuan)件(jian)(jian)應能在規定的(de)試驗條件(jian)(jian)下經歷2000次通(tong)斷(duan)電試驗,而不發生損壞(huai)