防(fang)爆(bao)(bao)加熱(re)(re)(re)管(guan)(guan)(guan)(guan)是(shi)一(yi)種消耗(hao)電(dian)能轉換為熱(re)(re)(re)能,來對需加熱(re)(re)(re)物(wu)料進行加熱(re)(re)(re)。防(fang)爆(bao)(bao)加熱(re)(re)(re)管(guan)(guan)(guan)(guan)是(shi)由外到(dao)里外殼(不繡鋼/碳鋼/銅(tong)/鈦材等(deng)、發熱(re)(re)(re)絲(鎳(nie)鉻鉛合(he)金)、填充(chong)物(wu)(氧化鎂,作(zuo)(zuo)用是(shi)導熱(re)(re)(re)、絕緣)、外殼(不繡鋼、碳鋼、鈦材、銅(tong) 等(deng))、陶瓷封(feng)頭(作(zuo)(zuo)用:絕緣)、防(fang)爆(bao)(bao)盒組(zu)成的(de)(de)(de)(de)。加熱(re)(re)(re)管(guan)(guan)(guan)(guan)在工作(zuo)(zuo)中(zhong)(zhong)低溫流體介(jie)(jie)質通過管(guan)(guan)(guan)(guan)道在壓力(li)作(zuo)(zuo)用下進入(ru)其輸入(ru)口,沿著電(dian)加熱(re)(re)(re)容器內部特定換熱(re)(re)(re)流道,運(yun)用空(kong)氣電(dian)熱(re)(re)(re)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)流體熱(re)(re)(re)力(li)學原理設計的(de)(de)(de)(de)路徑,帶走空(kong)氣加熱(re)(re)(re)管(guan)(guan)(guan)(guan)中(zhong)(zhong)的(de)(de)(de)(de)電(dian)熱(re)(re)(re)元件(jian)工作(zuo)(zuo)中(zhong)(zhong)所(suo)產(chan)生的(de)(de)(de)(de)高溫熱(re)(re)(re)能量,使空(kong)氣加熱(re)(re)(re)管(guan)(guan)(guan)(guan)被加熱(re)(re)(re)介(jie)(jie)質溫度(du)升高,加熱(re)(re)(re)管(guan)(guan)(guan)(guan)出口得到(dao)工藝要求的(de)(de)(de)(de)高溫介(jie)(jie)質。
產品(pin)特點
1.升溫(wen)時間(jian)在試驗電(dian)壓下,元件從環境溫(wen)度升至試驗溫(wen)度時間(jian)應不大于15min
2.額(e)定(ding)(ding)(ding)功率偏差在充分發熱的條(tiao)件下,元件的額(e)定(ding)(ding)(ding)功率的偏差應不超(chao)過下列(lie)規(gui)定(ding)(ding)(ding)的范(fan)圍;對額(e)定(ding)(ding)(ding)功率小于等于100W的元件為:士10%。對額(e)定(ding)(ding)(ding)功率大(da)于100W的元件為+5%~- 10%或10W,取兩者中的較大(da)值(zhi)。
3.泄(xie)露(lu)(lu)電(dian)流(liu)冷(leng)態泄(xie)露(lu)(lu)電(dian)流(liu)以及水壓(ya)和密封試(shi)驗(yan)(yan)后泄(xie)露(lu)(lu)電(dian)流(liu)應不(bu)超過(guo)(guo)0.5mA工(gong)作(zuo)溫(wen)度下的熱(re)態泄(xie)露(lu)(lu)電(dian)流(liu)應不(bu)超過(guo)(guo)公式中的計算值,但(dan)不(bu)超過(guo)(guo)5mA I=1/6 (tTX0.00001) I一(yi) 熱(re)態泄(xie)露(lu)(lu)電(dian)流(liu)mA t-發熱(re)長度mm T-工(gong)作(zuo)溫(wen)度C多個元件串聯(lian)到電(dian)源中時,應以這(zhe)一(yi)組元件為(wei) 整體進行泄(xie)露(lu)(lu)電(dian)流(liu)試(shi)驗(yan)(yan)。
4. 絕緣(yuan)電(dian)(dian)阻出廠檢驗時(shi)冷態絕緣(yuan)電(dian)(dian)阻應不(bu)小于(yu)50MQ密封試(shi)驗后(hou),長期存放或者(zhe)使用后(hou)的絕緣(yuan)電(dian)(dian)阻應不(bu)消與MQ工作溫度(du)下的熱態絕緣(yuan)電(dian)(dian)阻應不(bu)低于(yu)公式中的計算值(zhi),但應不(bu)小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態絕緣(yuan)電(dian)(dian)阻MQ t一-發(fa) 熱長度(du)mmT一工作溫度(du)°C
5.絕(jue)緣耐壓(ya)強度元(yuan)件(jian)(jian)應在規(gui)定的試驗(yan)條(tiao)件(jian)(jian)和(he)試驗(yan)電壓(ya)下保持1min,而無閃絡和(he)擊穿現象
6.經受通斷電的能力(li)元件應(ying)能在規定的試(shi)驗條件下經歷2000次通斷電試(shi)驗,而不發(fa)生損(sun)壞