防(fang)爆加(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)是(shi)一種消耗電(dian)(dian)能(neng)轉換為熱(re)(re)(re)(re)(re)能(neng),來(lai)對(dui)需(xu)加(jia)(jia)熱(re)(re)(re)(re)(re)物(wu)料進(jin)行加(jia)(jia)熱(re)(re)(re)(re)(re)。防(fang)爆加(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)是(shi)由外到(dao)(dao)里外殼(不繡(xiu)鋼(gang)(gang)/碳鋼(gang)(gang)/銅/鈦(tai)材(cai)等、發(fa)熱(re)(re)(re)(re)(re)絲(鎳鉻鉛合金)、填充物(wu)(氧化鎂,作(zuo)用是(shi)導熱(re)(re)(re)(re)(re)、絕緣)、外殼(不繡(xiu)鋼(gang)(gang)、碳鋼(gang)(gang)、鈦(tai)材(cai)、銅 等)、陶瓷封頭(作(zuo)用:絕緣)、防(fang)爆盒(he)組成的。加(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)在工(gong)作(zuo)中低溫(wen)流體介(jie)質(zhi)通(tong)過管(guan)(guan)(guan)道在壓力作(zuo)用下進(jin)入(ru)其輸入(ru)口,沿著電(dian)(dian)加(jia)(jia)熱(re)(re)(re)(re)(re)容器內部特定換熱(re)(re)(re)(re)(re)流道,運(yun)用空氣(qi)電(dian)(dian)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)的流體熱(re)(re)(re)(re)(re)力學原(yuan)理設計的路(lu)徑,帶(dai)走空氣(qi)加(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)中的電(dian)(dian)熱(re)(re)(re)(re)(re)元件工(gong)作(zuo)中所產生的高(gao)(gao)溫(wen)熱(re)(re)(re)(re)(re)能(neng)量(liang),使空氣(qi)加(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)被加(jia)(jia)熱(re)(re)(re)(re)(re)介(jie)質(zhi)溫(wen)度升(sheng)高(gao)(gao),加(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)出(chu)口得(de)到(dao)(dao)工(gong)藝要求的高(gao)(gao)溫(wen)介(jie)質(zhi)。
產品特(te)點
1.升(sheng)溫(wen)時間在試(shi)驗電壓下,元(yuan)件從(cong)環境(jing)溫(wen)度(du)升(sheng)至試(shi)驗溫(wen)度(du)時間應不大于15min
2.額(e)定(ding)(ding)功(gong)率偏(pian)差在充分(fen)發熱的(de)條件(jian)下,元(yuan)(yuan)件(jian)的(de)額(e)定(ding)(ding)功(gong)率的(de)偏(pian)差應不(bu)超過下列(lie)規(gui)定(ding)(ding)的(de)范圍;對額(e)定(ding)(ding)功(gong)率小(xiao)于等于100W的(de)元(yuan)(yuan)件(jian)為:士10%。對額(e)定(ding)(ding)功(gong)率大(da)于100W的(de)元(yuan)(yuan)件(jian)為+5%~- 10%或(huo)10W,取(qu)兩者中的(de)較大(da)值。
3.泄(xie)(xie)(xie)露(lu)(lu)(lu)電(dian)(dian)(dian)流(liu)(liu)冷(leng)態(tai)泄(xie)(xie)(xie)露(lu)(lu)(lu)電(dian)(dian)(dian)流(liu)(liu)以(yi)及(ji)水(shui)壓(ya)和密封試驗(yan)后泄(xie)(xie)(xie)露(lu)(lu)(lu)電(dian)(dian)(dian)流(liu)(liu)應不(bu)(bu)超過0.5mA工(gong)作溫度(du)(du)下的熱態(tai)泄(xie)(xie)(xie)露(lu)(lu)(lu)電(dian)(dian)(dian)流(liu)(liu)應不(bu)(bu)超過公式中的計(ji)算值(zhi),但(dan)不(bu)(bu)超過5mA I=1/6 (tTX0.00001) I一 熱態(tai)泄(xie)(xie)(xie)露(lu)(lu)(lu)電(dian)(dian)(dian)流(liu)(liu)mA t-發熱長(chang)度(du)(du)mm T-工(gong)作溫度(du)(du)C多個元件串聯到(dao)電(dian)(dian)(dian)源中時,應以(yi)這一組元件為 整體進行泄(xie)(xie)(xie)露(lu)(lu)(lu)電(dian)(dian)(dian)流(liu)(liu)試驗(yan)。
4. 絕(jue)緣電(dian)(dian)阻出廠檢驗時冷態絕(jue)緣電(dian)(dian)阻應(ying)不(bu)小于(yu)50MQ密封試驗后(hou),長(chang)期存放或者使用后(hou)的(de)絕(jue)緣電(dian)(dian)阻應(ying)不(bu)消與MQ工作溫度下的(de)熱態絕(jue)緣電(dian)(dian)阻應(ying)不(bu)低于(yu)公式中的(de)計算值,但(dan)應(ying)不(bu)小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態絕(jue)緣電(dian)(dian)阻MQ t一-發 熱長(chang)度mmT一工作溫度°C
5.絕緣(yuan)耐壓強度元件應在規定(ding)的(de)試驗條件和試驗電壓下(xia)保持1min,而無閃絡和擊穿現象
6.經受通斷電的能(neng)力元件(jian)應能(neng)在(zai)規定(ding)的試驗條件(jian)下經歷2000次通斷電試驗,而不發生損壞