防爆(bao)(bao)(bao)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)(re)(re)管(guan)是一種消耗(hao)電能轉換(huan)為熱(re)(re)(re)(re)(re)(re)(re)能,來對需(xu)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)(re)(re)物料(liao)進(jin)行加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)(re)(re)。防爆(bao)(bao)(bao)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)(re)(re)管(guan)是由外(wai)到里外(wai)殼(ke)(ke)(不繡鋼/碳(tan)鋼/銅(tong)/鈦(tai)材等(deng)、發熱(re)(re)(re)(re)(re)(re)(re)絲(鎳(nie)鉻(ge)鉛合金)、填充(chong)物(氧(yang)化鎂,作(zuo)(zuo)用是導熱(re)(re)(re)(re)(re)(re)(re)、絕(jue)(jue)緣)、外(wai)殼(ke)(ke)(不繡鋼、碳(tan)鋼、鈦(tai)材、銅(tong) 等(deng))、陶瓷(ci)封頭(作(zuo)(zuo)用:絕(jue)(jue)緣)、防爆(bao)(bao)(bao)盒組(zu)成的。加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)(re)(re)管(guan)在工作(zuo)(zuo)中(zhong)低溫(wen)流體(ti)介質通過管(guan)道(dao)在壓(ya)力作(zuo)(zuo)用下進(jin)入其輸(shu)入口(kou),沿著電加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)(re)(re)容器內(nei)部特定換(huan)熱(re)(re)(re)(re)(re)(re)(re)流道(dao),運用空氣電熱(re)(re)(re)(re)(re)(re)(re)管(guan)的流體(ti)熱(re)(re)(re)(re)(re)(re)(re)力學原(yuan)理(li)設(she)計的路徑(jing),帶走空氣加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)(re)(re)管(guan)中(zhong)的電熱(re)(re)(re)(re)(re)(re)(re)元件(jian)工作(zuo)(zuo)中(zhong)所(suo)產(chan)生(sheng)的高(gao)溫(wen)熱(re)(re)(re)(re)(re)(re)(re)能量,使(shi)空氣加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)(re)(re)管(guan)被加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)(re)(re)介質溫(wen)度升高(gao),加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)(re)(re)管(guan)出(chu)口(kou)得到工藝(yi)要求的高(gao)溫(wen)介質。
產品特點
1.升(sheng)溫時(shi)間在試(shi)驗(yan)電壓下,元件從環境溫度升(sheng)至(zhi)試(shi)驗(yan)溫度時(shi)間應不大(da)于(yu)15min
2.額(e)定功(gong)率偏(pian)差在充(chong)分發熱的條件下,元(yuan)件的額(e)定功(gong)率的偏(pian)差應不超過下列(lie)規定的范圍(wei);對(dui)額(e)定功(gong)率小(xiao)于(yu)等于(yu)100W的元(yuan)件為(wei):士10%。對(dui)額(e)定功(gong)率大于(yu)100W的元(yuan)件為(wei)+5%~- 10%或10W,取(qu)兩(liang)者中的較大值。
3.泄(xie)露電(dian)(dian)(dian)流(liu)冷態泄(xie)露電(dian)(dian)(dian)流(liu)以(yi)及水(shui)壓(ya)和(he)密(mi)封試驗后泄(xie)露電(dian)(dian)(dian)流(liu)應不超過(guo)0.5mA工作(zuo)溫(wen)度(du)下的熱(re)態泄(xie)露電(dian)(dian)(dian)流(liu)應不超過(guo)公(gong)式中的計算值(zhi),但不超過(guo)5mA I=1/6 (tTX0.00001) I一 熱(re)態泄(xie)露電(dian)(dian)(dian)流(liu)mA t-發熱(re)長度(du)mm T-工作(zuo)溫(wen)度(du)C多個元件串聯到電(dian)(dian)(dian)源中時(shi),應以(yi)這一組元件為(wei) 整體進行泄(xie)露電(dian)(dian)(dian)流(liu)試驗。
4. 絕(jue)緣(yuan)(yuan)電(dian)阻(zu)(zu)出廠檢(jian)驗時冷態絕(jue)緣(yuan)(yuan)電(dian)阻(zu)(zu)應(ying)不(bu)小于50MQ密封試驗后,長期(qi)存放或者使用后的(de)絕(jue)緣(yuan)(yuan)電(dian)阻(zu)(zu)應(ying)不(bu)消與MQ工作(zuo)溫度下的(de)熱態絕(jue)緣(yuan)(yuan)電(dian)阻(zu)(zu)應(ying)不(bu)低于公式中的(de)計算值,但應(ying)不(bu)小于1MQ R=「(10-0.015T) /t」X0.001 R熱態絕(jue)緣(yuan)(yuan)電(dian)阻(zu)(zu)MQ t一(yi)-發 熱長度mmT一(yi)工作(zuo)溫度°C
5.絕緣耐壓強度元件應(ying)在規(gui)定(ding)的試驗(yan)條件和(he)試驗(yan)電(dian)壓下保持1min,而無(wu)閃絡(luo)和(he)擊穿現象
6.經受(shou)通斷電(dian)(dian)的能力元件應能在規定的試(shi)驗條件下(xia)經歷2000次通斷電(dian)(dian)試(shi)驗,而不發生(sheng)損壞