防(fang)爆(bao)加熱(re)(re)(re)管(guan)(guan)(guan)是(shi)(shi)一(yi)種(zhong)消耗(hao)電(dian)(dian)能轉換為熱(re)(re)(re)能,來對(dui)需(xu)加熱(re)(re)(re)物(wu)料(liao)進行加熱(re)(re)(re)。防(fang)爆(bao)加熱(re)(re)(re)管(guan)(guan)(guan)是(shi)(shi)由外到(dao)里外殼(ke)(不繡(xiu)(xiu)鋼(gang)/碳(tan)鋼(gang)/銅/鈦材(cai)等(deng)、發熱(re)(re)(re)絲(鎳鉻鉛(qian)合金)、填充物(wu)(氧(yang)化鎂,作(zuo)(zuo)用(yong)是(shi)(shi)導熱(re)(re)(re)、絕(jue)緣(yuan))、外殼(ke)(不繡(xiu)(xiu)鋼(gang)、碳(tan)鋼(gang)、鈦材(cai)、銅 等(deng))、陶瓷封頭(作(zuo)(zuo)用(yong):絕(jue)緣(yuan))、防(fang)爆(bao)盒(he)組成的(de)(de)。加熱(re)(re)(re)管(guan)(guan)(guan)在(zai)工(gong)作(zuo)(zuo)中(zhong)(zhong)低溫(wen)流(liu)體(ti)介(jie)質(zhi)通(tong)過管(guan)(guan)(guan)道在(zai)壓力作(zuo)(zuo)用(yong)下進入(ru)其輸入(ru)口,沿(yan)著電(dian)(dian)加熱(re)(re)(re)容(rong)器內部(bu)特定換熱(re)(re)(re)流(liu)道,運(yun)用(yong)空(kong)氣(qi)電(dian)(dian)熱(re)(re)(re)管(guan)(guan)(guan)的(de)(de)流(liu)體(ti)熱(re)(re)(re)力學原理設計(ji)的(de)(de)路徑,帶走(zou)空(kong)氣(qi)加熱(re)(re)(re)管(guan)(guan)(guan)中(zhong)(zhong)的(de)(de)電(dian)(dian)熱(re)(re)(re)元(yuan)件工(gong)作(zuo)(zuo)中(zhong)(zhong)所產生的(de)(de)高(gao)(gao)溫(wen)熱(re)(re)(re)能量,使空(kong)氣(qi)加熱(re)(re)(re)管(guan)(guan)(guan)被加熱(re)(re)(re)介(jie)質(zhi)溫(wen)度升高(gao)(gao),加熱(re)(re)(re)管(guan)(guan)(guan)出口得到(dao)工(gong)藝要求(qiu)的(de)(de)高(gao)(gao)溫(wen)介(jie)質(zhi)。
產品特點
1.升(sheng)溫時間(jian)在試(shi)驗電壓(ya)下,元(yuan)件從環境溫度升(sheng)至(zhi)試(shi)驗溫度時間(jian)應不大于15min
2.額(e)定(ding)功率(lv)(lv)偏差在(zai)充分發熱的條件(jian)下,元件(jian)的額(e)定(ding)功率(lv)(lv)的偏差應(ying)不(bu)超過下列規(gui)定(ding)的范圍;對(dui)額(e)定(ding)功率(lv)(lv)小于等于100W的元件(jian)為:士10%。對(dui)額(e)定(ding)功率(lv)(lv)大于100W的元件(jian)為+5%~- 10%或10W,取兩(liang)者中(zhong)的較大值。
3.泄(xie)露(lu)電(dian)流(liu)(liu)冷態(tai)泄(xie)露(lu)電(dian)流(liu)(liu)以(yi)及水壓和密封試驗后(hou)泄(xie)露(lu)電(dian)流(liu)(liu)應不超(chao)過0.5mA工(gong)作溫度下(xia)的熱態(tai)泄(xie)露(lu)電(dian)流(liu)(liu)應不超(chao)過公式中(zhong)的計算值,但(dan)不超(chao)過5mA I=1/6 (tTX0.00001) I一 熱態(tai)泄(xie)露(lu)電(dian)流(liu)(liu)mA t-發熱長度mm T-工(gong)作溫度C多(duo)個元(yuan)件串聯到電(dian)源中(zhong)時(shi),應以(yi)這一組元(yuan)件為(wei) 整體(ti)進行泄(xie)露(lu)電(dian)流(liu)(liu)試驗。
4. 絕(jue)(jue)緣電(dian)阻出廠檢驗(yan)時冷態(tai)(tai)絕(jue)(jue)緣電(dian)阻應(ying)(ying)不小于50MQ密封試驗(yan)后,長期(qi)存放(fang)或(huo)者使(shi)用后的(de)絕(jue)(jue)緣電(dian)阻應(ying)(ying)不消與MQ工作溫度下(xia)的(de)熱(re)態(tai)(tai)絕(jue)(jue)緣電(dian)阻應(ying)(ying)不低于公式(shi)中(zhong)的(de)計算值,但應(ying)(ying)不小于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態(tai)(tai)絕(jue)(jue)緣電(dian)阻MQ t一-發(fa) 熱(re)長度mmT一工作溫度°C
5.絕緣耐壓(ya)強度元(yuan)件應在規(gui)定的(de)試驗(yan)條(tiao)件和(he)試驗(yan)電壓(ya)下保(bao)持(chi)1min,而無閃(shan)絡和(he)擊穿(chuan)現象
6.經受(shou)通斷(duan)電的(de)能(neng)力元(yuan)件應能(neng)在(zai)規定(ding)的(de)試(shi)驗(yan)條件下經歷2000次(ci)通斷(duan)電試(shi)驗(yan),而不發生損壞