防(fang)爆(bao)(bao)加(jia)(jia)熱(re)管(guan)(guan)是一種消(xiao)耗電能(neng)(neng)轉(zhuan)換(huan)為熱(re)能(neng)(neng),來對需(xu)加(jia)(jia)熱(re)物料進行加(jia)(jia)熱(re)。防(fang)爆(bao)(bao)加(jia)(jia)熱(re)管(guan)(guan)是由外到(dao)(dao)里外殼(不繡鋼(gang)(gang)/碳(tan)鋼(gang)(gang)/銅(tong)/鈦(tai)材(cai)等、發(fa)熱(re)絲(鎳鉻鉛合金)、填充(chong)物(氧化鎂(mei),作(zuo)用(yong)是導熱(re)、絕(jue)緣)、外殼(不繡鋼(gang)(gang)、碳(tan)鋼(gang)(gang)、鈦(tai)材(cai)、銅(tong) 等)、陶瓷封頭(作(zuo)用(yong):絕(jue)緣)、防(fang)爆(bao)(bao)盒組成的(de)。加(jia)(jia)熱(re)管(guan)(guan)在工(gong)作(zuo)中(zhong)(zhong)低溫流(liu)體介(jie)質通過管(guan)(guan)道在壓(ya)力(li)作(zuo)用(yong)下進入其輸入口(kou)(kou),沿著電加(jia)(jia)熱(re)容(rong)器內部特定換(huan)熱(re)流(liu)道,運用(yong)空(kong)氣(qi)電熱(re)管(guan)(guan)的(de)流(liu)體熱(re)力(li)學原理(li)設計(ji)的(de)路(lu)徑,帶走(zou)空(kong)氣(qi)加(jia)(jia)熱(re)管(guan)(guan)中(zhong)(zhong)的(de)電熱(re)元件工(gong)作(zuo)中(zhong)(zhong)所產(chan)生的(de)高溫熱(re)能(neng)(neng)量,使(shi)空(kong)氣(qi)加(jia)(jia)熱(re)管(guan)(guan)被加(jia)(jia)熱(re)介(jie)質溫度升高,加(jia)(jia)熱(re)管(guan)(guan)出(chu)口(kou)(kou)得到(dao)(dao)工(gong)藝(yi)要求(qiu)的(de)高溫介(jie)質。
產品(pin)特(te)點
1.升(sheng)溫時間在試驗電(dian)壓(ya)下,元件從環境溫度(du)升(sheng)至(zhi)試驗溫度(du)時間應不(bu)大于15min
2.額(e)定(ding)功(gong)(gong)率(lv)偏(pian)差(cha)在充分發熱的(de)條(tiao)件(jian)下,元件(jian)的(de)額(e)定(ding)功(gong)(gong)率(lv)的(de)偏(pian)差(cha)應不超過(guo)下列(lie)規定(ding)的(de)范圍;對額(e)定(ding)功(gong)(gong)率(lv)小于等于100W的(de)元件(jian)為:士10%。對額(e)定(ding)功(gong)(gong)率(lv)大(da)于100W的(de)元件(jian)為+5%~- 10%或10W,取兩者(zhe)中的(de)較大(da)值。
3.泄(xie)(xie)露電(dian)(dian)流(liu)(liu)冷態(tai)(tai)泄(xie)(xie)露電(dian)(dian)流(liu)(liu)以及(ji)水壓和密封試(shi)驗后泄(xie)(xie)露電(dian)(dian)流(liu)(liu)應(ying)不(bu)超(chao)過(guo)(guo)0.5mA工(gong)作溫度下(xia)的熱(re)態(tai)(tai)泄(xie)(xie)露電(dian)(dian)流(liu)(liu)應(ying)不(bu)超(chao)過(guo)(guo)公式中的計算(suan)值,但不(bu)超(chao)過(guo)(guo)5mA I=1/6 (tTX0.00001) I一 熱(re)態(tai)(tai)泄(xie)(xie)露電(dian)(dian)流(liu)(liu)mA t-發熱(re)長(chang)度mm T-工(gong)作溫度C多個元件(jian)串聯到電(dian)(dian)源中時,應(ying)以這一組(zu)元件(jian)為(wei) 整(zheng)體進(jin)行泄(xie)(xie)露電(dian)(dian)流(liu)(liu)試(shi)驗。
4. 絕緣(yuan)(yuan)電(dian)阻(zu)出廠檢驗(yan)時冷態(tai)絕緣(yuan)(yuan)電(dian)阻(zu)應不小于(yu)50MQ密封試驗(yan)后(hou),長(chang)期存(cun)放或者使用后(hou)的絕緣(yuan)(yuan)電(dian)阻(zu)應不消與MQ工(gong)(gong)作(zuo)(zuo)溫度下(xia)的熱態(tai)絕緣(yuan)(yuan)電(dian)阻(zu)應不低于(yu)公式中(zhong)的計算值,但應不小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)絕緣(yuan)(yuan)電(dian)阻(zu)MQ t一-發(fa) 熱長(chang)度mmT一工(gong)(gong)作(zuo)(zuo)溫度°C
5.絕緣(yuan)耐壓(ya)強度元件(jian)(jian)應在規定的試(shi)驗(yan)條件(jian)(jian)和試(shi)驗(yan)電壓(ya)下保(bao)持1min,而無閃絡(luo)和擊穿現象
6.經受通(tong)(tong)斷電的(de)能力元(yuan)件(jian)應能在規定的(de)試(shi)驗條件(jian)下經歷2000次(ci)通(tong)(tong)斷電試(shi)驗,而不(bu)發(fa)生損(sun)壞