防(fang)爆加(jia)(jia)熱(re)(re)管(guan)(guan)是(shi)一種消耗電(dian)能轉換(huan)為(wei)熱(re)(re)能,來對(dui)需加(jia)(jia)熱(re)(re)物(wu)(wu)料進行加(jia)(jia)熱(re)(re)。防(fang)爆加(jia)(jia)熱(re)(re)管(guan)(guan)是(shi)由外到(dao)里外殼(ke)(不繡鋼(gang)/碳(tan)鋼(gang)/銅/鈦材等、發(fa)熱(re)(re)絲(鎳鉻鉛合金(jin))、填(tian)充物(wu)(wu)(氧化(hua)鎂(mei),作(zuo)用是(shi)導(dao)熱(re)(re)、絕緣)、外殼(ke)(不繡鋼(gang)、碳(tan)鋼(gang)、鈦材、銅 等)、陶瓷封頭(作(zuo)用:絕緣)、防(fang)爆盒組成的。加(jia)(jia)熱(re)(re)管(guan)(guan)在工作(zuo)中低(di)溫(wen)流(liu)體介質通過管(guan)(guan)道在壓力作(zuo)用下進入其輸入口,沿著電(dian)加(jia)(jia)熱(re)(re)容器(qi)內部特定換(huan)熱(re)(re)流(liu)道,運(yun)用空氣(qi)(qi)電(dian)熱(re)(re)管(guan)(guan)的流(liu)體熱(re)(re)力學原(yuan)理設計的路(lu)徑(jing),帶走空氣(qi)(qi)加(jia)(jia)熱(re)(re)管(guan)(guan)中的電(dian)熱(re)(re)元(yuan)件工作(zuo)中所(suo)產生的高(gao)溫(wen)熱(re)(re)能量,使空氣(qi)(qi)加(jia)(jia)熱(re)(re)管(guan)(guan)被加(jia)(jia)熱(re)(re)介質溫(wen)度升高(gao),加(jia)(jia)熱(re)(re)管(guan)(guan)出(chu)口得到(dao)工藝(yi)要求的高(gao)溫(wen)介質。
產品特點
1.升溫(wen)時(shi)間在試驗電(dian)壓下(xia),元件從環境溫(wen)度升至試驗溫(wen)度時(shi)間應不大于15min
2.額(e)定(ding)(ding)功(gong)(gong)率(lv)偏(pian)差在充分發熱(re)的(de)條件(jian)(jian)(jian)(jian)下,元件(jian)(jian)(jian)(jian)的(de)額(e)定(ding)(ding)功(gong)(gong)率(lv)的(de)偏(pian)差應(ying)不超過下列規定(ding)(ding)的(de)范圍;對額(e)定(ding)(ding)功(gong)(gong)率(lv)小于(yu)等于(yu)100W的(de)元件(jian)(jian)(jian)(jian)為(wei):士(shi)10%。對額(e)定(ding)(ding)功(gong)(gong)率(lv)大于(yu)100W的(de)元件(jian)(jian)(jian)(jian)為(wei)+5%~- 10%或10W,取兩者中的(de)較大值。
3.泄(xie)露(lu)電流(liu)冷態泄(xie)露(lu)電流(liu)以及水壓和密封(feng)試驗(yan)(yan)后泄(xie)露(lu)電流(liu)應不(bu)(bu)(bu)超(chao)過0.5mA工作(zuo)溫度下的熱態泄(xie)露(lu)電流(liu)應不(bu)(bu)(bu)超(chao)過公式中(zhong)的計算值,但(dan)不(bu)(bu)(bu)超(chao)過5mA I=1/6 (tTX0.00001) I一 熱態泄(xie)露(lu)電流(liu)mA t-發(fa)熱長(chang)度mm T-工作(zuo)溫度C多個元件串聯到電源(yuan)中(zhong)時,應以這一組元件為(wei) 整體進(jin)行泄(xie)露(lu)電流(liu)試驗(yan)(yan)。
4. 絕(jue)(jue)緣(yuan)電(dian)阻出廠檢(jian)驗時冷(leng)態絕(jue)(jue)緣(yuan)電(dian)阻應(ying)(ying)(ying)不(bu)(bu)小于(yu)50MQ密(mi)封試驗后,長期存放(fang)或者(zhe)使(shi)用后的絕(jue)(jue)緣(yuan)電(dian)阻應(ying)(ying)(ying)不(bu)(bu)消與MQ工(gong)(gong)作溫(wen)度(du)(du)下的熱態絕(jue)(jue)緣(yuan)電(dian)阻應(ying)(ying)(ying)不(bu)(bu)低于(yu)公(gong)式(shi)中的計算值,但應(ying)(ying)(ying)不(bu)(bu)小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態絕(jue)(jue)緣(yuan)電(dian)阻MQ t一-發 熱長度(du)(du)mmT一工(gong)(gong)作溫(wen)度(du)(du)°C
5.絕緣耐壓強度元件(jian)應(ying)在規(gui)定的試驗(yan)(yan)條件(jian)和試驗(yan)(yan)電(dian)壓下保(bao)持1min,而無閃(shan)絡和擊穿現象
6.經受通(tong)斷電的(de)能力(li)元(yuan)件應能在規定(ding)的(de)試(shi)驗條件下經歷(li)2000次(ci)通(tong)斷電試(shi)驗,而不(bu)發(fa)生損(sun)壞(huai)