防(fang)爆(bao)加熱(re)(re)管(guan)(guan)是(shi)一種消耗電能轉(zhuan)換(huan)為熱(re)(re)能,來對需加熱(re)(re)物(wu)料進(jin)行加熱(re)(re)。防(fang)爆(bao)加熱(re)(re)管(guan)(guan)是(shi)由外到(dao)里外殼(不(bu)繡鋼(gang)/碳鋼(gang)/銅(tong)/鈦(tai)材等(deng)、發熱(re)(re)絲(鎳鉻鉛合金)、填充物(wu)(氧化鎂,作(zuo)用是(shi)導(dao)熱(re)(re)、絕緣)、外殼(不(bu)繡鋼(gang)、碳鋼(gang)、鈦(tai)材、銅(tong) 等(deng))、陶瓷封(feng)頭(作(zuo)用:絕緣)、防(fang)爆(bao)盒(he)組成的(de)。加熱(re)(re)管(guan)(guan)在工(gong)作(zuo)中低溫(wen)(wen)(wen)流體介(jie)(jie)(jie)質(zhi)通過管(guan)(guan)道在壓力(li)作(zuo)用下進(jin)入(ru)其輸(shu)入(ru)口,沿著電加熱(re)(re)容(rong)器內(nei)部特定換(huan)熱(re)(re)流道,運用空(kong)氣(qi)電熱(re)(re)管(guan)(guan)的(de)流體熱(re)(re)力(li)學原理設計的(de)路徑,帶走(zou)空(kong)氣(qi)加熱(re)(re)管(guan)(guan)中的(de)電熱(re)(re)元件工(gong)作(zuo)中所產生(sheng)的(de)高溫(wen)(wen)(wen)熱(re)(re)能量,使空(kong)氣(qi)加熱(re)(re)管(guan)(guan)被加熱(re)(re)介(jie)(jie)(jie)質(zhi)溫(wen)(wen)(wen)度升(sheng)高,加熱(re)(re)管(guan)(guan)出口得(de)到(dao)工(gong)藝要求的(de)高溫(wen)(wen)(wen)介(jie)(jie)(jie)質(zhi)。
產品特點(dian)
1.升(sheng)溫時間(jian)在試驗電壓(ya)下,元件(jian)從(cong)環境溫度升(sheng)至試驗溫度時間(jian)應(ying)不大于(yu)15min
2.額(e)定(ding)功率(lv)偏差在(zai)充分發熱的(de)(de)(de)條(tiao)件(jian)下(xia),元件(jian)的(de)(de)(de)額(e)定(ding)功率(lv)的(de)(de)(de)偏差應不超(chao)過下(xia)列規定(ding)的(de)(de)(de)范(fan)圍;對額(e)定(ding)功率(lv)小于等于100W的(de)(de)(de)元件(jian)為(wei):士10%。對額(e)定(ding)功率(lv)大于100W的(de)(de)(de)元件(jian)為(wei)+5%~- 10%或10W,取兩者中的(de)(de)(de)較大值。
3.泄(xie)露電(dian)(dian)流(liu)冷(leng)態泄(xie)露電(dian)(dian)流(liu)以及水(shui)壓和密封試驗(yan)后泄(xie)露電(dian)(dian)流(liu)應不(bu)(bu)超(chao)(chao)過0.5mA工作(zuo)溫度下的熱態泄(xie)露電(dian)(dian)流(liu)應不(bu)(bu)超(chao)(chao)過公(gong)式中的計算值,但不(bu)(bu)超(chao)(chao)過5mA I=1/6 (tTX0.00001) I一 熱態泄(xie)露電(dian)(dian)流(liu)mA t-發熱長度mm T-工作(zuo)溫度C多個(ge)元件串聯到電(dian)(dian)源中時(shi),應以這一組(zu)元件為 整體進行(xing)泄(xie)露電(dian)(dian)流(liu)試驗(yan)。
4. 絕緣(yuan)(yuan)電(dian)(dian)阻(zu)出廠檢(jian)驗(yan)時冷態絕緣(yuan)(yuan)電(dian)(dian)阻(zu)應不(bu)小于(yu)50MQ密封試驗(yan)后,長期存(cun)放或者使用后的(de)絕緣(yuan)(yuan)電(dian)(dian)阻(zu)應不(bu)消與MQ工(gong)作溫度(du)下的(de)熱態絕緣(yuan)(yuan)電(dian)(dian)阻(zu)應不(bu)低于(yu)公式中(zhong)的(de)計(ji)算(suan)值,但應不(bu)小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態絕緣(yuan)(yuan)電(dian)(dian)阻(zu)MQ t一-發 熱長度(du)mmT一工(gong)作溫度(du)°C
5.絕緣耐壓強度元件(jian)應在規(gui)定的試驗條(tiao)件(jian)和試驗電(dian)壓下保持1min,而無閃絡和擊穿(chuan)現象
6.經受(shou)通(tong)(tong)斷(duan)(duan)電的能(neng)力(li)元件應能(neng)在規定的試(shi)驗條件下經歷2000次通(tong)(tong)斷(duan)(duan)電試(shi)驗,而(er)不發生損壞