防爆加(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)是(shi)一(yi)種消耗電(dian)(dian)能轉換為熱(re)(re)(re)(re)能,來對需加(jia)熱(re)(re)(re)(re)物料進行加(jia)熱(re)(re)(re)(re)。防爆加(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)是(shi)由外(wai)(wai)到里外(wai)(wai)殼(不繡(xiu)鋼(gang)/碳鋼(gang)/銅/鈦(tai)材(cai)(cai)等、發熱(re)(re)(re)(re)絲(鎳鉻鉛合金)、填充物(氧(yang)化鎂,作用(yong)是(shi)導(dao)熱(re)(re)(re)(re)、絕(jue)(jue)緣)、外(wai)(wai)殼(不繡(xiu)鋼(gang)、碳鋼(gang)、鈦(tai)材(cai)(cai)、銅 等)、陶(tao)瓷封頭(作用(yong):絕(jue)(jue)緣)、防爆盒(he)組成的。加(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)在(zai)工(gong)(gong)作中低(di)溫(wen)流(liu)體(ti)介(jie)質通過(guo)管(guan)(guan)(guan)道在(zai)壓力作用(yong)下進入其輸入口(kou),沿(yan)著電(dian)(dian)加(jia)熱(re)(re)(re)(re)容器內(nei)部特(te)定換熱(re)(re)(re)(re)流(liu)道,運用(yong)空(kong)氣電(dian)(dian)熱(re)(re)(re)(re)管(guan)(guan)(guan)的流(liu)體(ti)熱(re)(re)(re)(re)力學原理設計的路(lu)徑,帶走空(kong)氣加(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)中的電(dian)(dian)熱(re)(re)(re)(re)元(yuan)件工(gong)(gong)作中所產生的高(gao)溫(wen)熱(re)(re)(re)(re)能量,使空(kong)氣加(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)被(bei)加(jia)熱(re)(re)(re)(re)介(jie)質溫(wen)度升高(gao),加(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)出口(kou)得到工(gong)(gong)藝要(yao)求的高(gao)溫(wen)介(jie)質。
產品(pin)特點(dian)
1.升(sheng)溫(wen)(wen)時間在試驗電壓下(xia),元件從環境(jing)溫(wen)(wen)度(du)升(sheng)至(zhi)試驗溫(wen)(wen)度(du)時間應不大于15min
2.額定(ding)功(gong)(gong)率偏差在充分發熱的條件(jian)下(xia),元(yuan)件(jian)的額定(ding)功(gong)(gong)率的偏差應不(bu)超過下(xia)列規定(ding)的范圍(wei);對額定(ding)功(gong)(gong)率小于等于100W的元(yuan)件(jian)為(wei):士(shi)10%。對額定(ding)功(gong)(gong)率大(da)于100W的元(yuan)件(jian)為(wei)+5%~- 10%或10W,取(qu)兩者中的較大(da)值。
3.泄(xie)露電流(liu)冷態(tai)泄(xie)露電流(liu)以及水壓(ya)和密封試(shi)驗(yan)后泄(xie)露電流(liu)應不超過0.5mA工作溫度(du)下的(de)熱(re)態(tai)泄(xie)露電流(liu)應不超過公式中的(de)計算值(zhi),但不超過5mA I=1/6 (tTX0.00001) I一 熱(re)態(tai)泄(xie)露電流(liu)mA t-發熱(re)長度(du)mm T-工作溫度(du)C多個元件串聯到電源中時,應以這一組(zu)元件為 整體進行泄(xie)露電流(liu)試(shi)驗(yan)。
4. 絕緣(yuan)電(dian)阻(zu)(zu)出(chu)廠檢驗時冷態(tai)絕緣(yuan)電(dian)阻(zu)(zu)應不小于50MQ密封(feng)試驗后,長期(qi)存放或者(zhe)使用后的(de)(de)絕緣(yuan)電(dian)阻(zu)(zu)應不消與MQ工作溫度下的(de)(de)熱態(tai)絕緣(yuan)電(dian)阻(zu)(zu)應不低于公式(shi)中的(de)(de)計算(suan)值,但應不小于1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)絕緣(yuan)電(dian)阻(zu)(zu)MQ t一(yi)-發 熱長度mmT一(yi)工作溫度°C
5.絕緣耐壓強度(du)元件應在規定(ding)的試驗條件和試驗電壓下(xia)保(bao)持(chi)1min,而無(wu)閃(shan)絡(luo)和擊(ji)穿現象
6.經受通(tong)斷(duan)電的(de)能(neng)力元(yuan)件應能(neng)在規定的(de)試驗(yan)條件下經歷2000次通(tong)斷(duan)電試驗(yan),而不發生損壞(huai)