防爆加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)是(shi)一(yi)種消耗電能(neng)轉換為熱(re)(re)(re)(re)(re)能(neng),來對需加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)物(wu)料(liao)進行加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)。防爆加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)是(shi)由外到(dao)(dao)里外殼(ke)(不繡鋼/碳鋼/銅/鈦(tai)材等、發熱(re)(re)(re)(re)(re)絲(鎳鉻鉛合金(jin))、填充物(wu)(氧(yang)化鎂,作用(yong)是(shi)導熱(re)(re)(re)(re)(re)、絕(jue)(jue)緣)、外殼(ke)(不繡鋼、碳鋼、鈦(tai)材、銅 等)、陶瓷封頭(作用(yong):絕(jue)(jue)緣)、防爆盒(he)組成的(de)(de)。加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)在工(gong)(gong)作中低溫流體(ti)(ti)介質通過管(guan)道在壓力(li)(li)作用(yong)下進入其輸入口(kou),沿著電加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)容器內部特定(ding)換熱(re)(re)(re)(re)(re)流道,運用(yong)空(kong)氣電熱(re)(re)(re)(re)(re)管(guan)的(de)(de)流體(ti)(ti)熱(re)(re)(re)(re)(re)力(li)(li)學原理設(she)計的(de)(de)路徑,帶(dai)走空(kong)氣加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)中的(de)(de)電熱(re)(re)(re)(re)(re)元件工(gong)(gong)作中所(suo)產(chan)生(sheng)的(de)(de)高溫熱(re)(re)(re)(re)(re)能(neng)量,使(shi)空(kong)氣加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)被(bei)加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)介質溫度升高,加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)出口(kou)得(de)到(dao)(dao)工(gong)(gong)藝(yi)要求(qiu)的(de)(de)高溫介質。
產(chan)品(pin)特點
1.升溫(wen)時(shi)間在試驗電壓下(xia),元件從環境溫(wen)度(du)升至(zhi)試驗溫(wen)度(du)時(shi)間應不大于(yu)15min
2.額(e)定(ding)功(gong)率(lv)(lv)(lv)(lv)偏(pian)差(cha)在充分(fen)發熱的(de)(de)條件(jian)下(xia),元(yuan)件(jian)的(de)(de)額(e)定(ding)功(gong)率(lv)(lv)(lv)(lv)的(de)(de)偏(pian)差(cha)應不超過下(xia)列規定(ding)的(de)(de)范圍;對額(e)定(ding)功(gong)率(lv)(lv)(lv)(lv)小于(yu)等于(yu)100W的(de)(de)元(yuan)件(jian)為(wei):士10%。對額(e)定(ding)功(gong)率(lv)(lv)(lv)(lv)大于(yu)100W的(de)(de)元(yuan)件(jian)為(wei)+5%~- 10%或(huo)10W,取兩者中的(de)(de)較大值。
3.泄露(lu)電(dian)(dian)(dian)流(liu)(liu)冷(leng)態泄露(lu)電(dian)(dian)(dian)流(liu)(liu)以及水壓和(he)密(mi)封試驗(yan)后泄露(lu)電(dian)(dian)(dian)流(liu)(liu)應不超過(guo)0.5mA工作(zuo)溫度下的熱(re)(re)態泄露(lu)電(dian)(dian)(dian)流(liu)(liu)應不超過(guo)公(gong)式中(zhong)的計(ji)算值,但不超過(guo)5mA I=1/6 (tTX0.00001) I一 熱(re)(re)態泄露(lu)電(dian)(dian)(dian)流(liu)(liu)mA t-發(fa)熱(re)(re)長度mm T-工作(zuo)溫度C多個元件串聯到電(dian)(dian)(dian)源(yuan)中(zhong)時,應以這一組元件為 整體(ti)進行泄露(lu)電(dian)(dian)(dian)流(liu)(liu)試驗(yan)。
4. 絕(jue)緣電(dian)(dian)阻出(chu)廠(chang)檢(jian)驗時冷態絕(jue)緣電(dian)(dian)阻應(ying)(ying)不小于50MQ密封試驗后,長(chang)期存放(fang)或者使(shi)用后的(de)(de)絕(jue)緣電(dian)(dian)阻應(ying)(ying)不消與MQ工(gong)作溫度下的(de)(de)熱態絕(jue)緣電(dian)(dian)阻應(ying)(ying)不低于公式中(zhong)的(de)(de)計算(suan)值,但(dan)應(ying)(ying)不小于1MQ R=「(10-0.015T) /t」X0.001 R熱態絕(jue)緣電(dian)(dian)阻MQ t一(yi)(yi)-發 熱長(chang)度mmT一(yi)(yi)工(gong)作溫度°C
5.絕(jue)緣耐(nai)壓(ya)強度元件應(ying)在規定(ding)的試驗條件和試驗電壓(ya)下保持1min,而無閃絡和擊穿現象(xiang)
6.經受通斷電(dian)的(de)能力元件(jian)應(ying)能在規定的(de)試(shi)驗條件(jian)下(xia)經歷(li)2000次通斷電(dian)試(shi)驗,而不發生損壞(huai)