防爆加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)是一種消(xiao)耗電(dian)能轉換(huan)為(wei)熱(re)(re)(re)(re)能,來對需加(jia)(jia)熱(re)(re)(re)(re)物料進(jin)行加(jia)(jia)熱(re)(re)(re)(re)。防爆加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)是由(you)外(wai)(wai)到里外(wai)(wai)殼(不(bu)繡鋼(gang)(gang)(gang)/碳(tan)鋼(gang)(gang)(gang)/銅/鈦材(cai)等、發熱(re)(re)(re)(re)絲(鎳(nie)鉻鉛合金)、填(tian)充物(氧化鎂(mei),作(zuo)(zuo)用(yong)(yong)是導熱(re)(re)(re)(re)、絕緣)、外(wai)(wai)殼(不(bu)繡鋼(gang)(gang)(gang)、碳(tan)鋼(gang)(gang)(gang)、鈦材(cai)、銅 等)、陶瓷(ci)封頭(tou)(作(zuo)(zuo)用(yong)(yong):絕緣)、防爆盒組成的(de)(de)(de)。加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)在(zai)工作(zuo)(zuo)中(zhong)低溫(wen)流(liu)體介質(zhi)(zhi)通過管(guan)(guan)道(dao)(dao)在(zai)壓力作(zuo)(zuo)用(yong)(yong)下進(jin)入其(qi)輸入口(kou),沿著電(dian)加(jia)(jia)熱(re)(re)(re)(re)容器內(nei)部特定換(huan)熱(re)(re)(re)(re)流(liu)道(dao)(dao),運用(yong)(yong)空氣電(dian)熱(re)(re)(re)(re)管(guan)(guan)的(de)(de)(de)流(liu)體熱(re)(re)(re)(re)力學原理設計的(de)(de)(de)路徑,帶走空氣加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)中(zhong)的(de)(de)(de)電(dian)熱(re)(re)(re)(re)元件工作(zuo)(zuo)中(zhong)所(suo)產(chan)生的(de)(de)(de)高(gao)溫(wen)熱(re)(re)(re)(re)能量,使空氣加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)被加(jia)(jia)熱(re)(re)(re)(re)介質(zhi)(zhi)溫(wen)度升高(gao),加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)出(chu)口(kou)得到工藝要求的(de)(de)(de)高(gao)溫(wen)介質(zhi)(zhi)。
產(chan)品特點(dian)
1.升溫時間(jian)在試驗電壓下,元件從環(huan)境溫度升至試驗溫度時間(jian)應(ying)不大于(yu)15min
2.額定(ding)(ding)功(gong)(gong)率(lv)偏差在充(chong)分發熱的(de)(de)條件(jian)(jian)下(xia),元件(jian)(jian)的(de)(de)額定(ding)(ding)功(gong)(gong)率(lv)的(de)(de)偏差應不超過下(xia)列規定(ding)(ding)的(de)(de)范圍(wei);對(dui)(dui)額定(ding)(ding)功(gong)(gong)率(lv)小于(yu)(yu)等(deng)于(yu)(yu)100W的(de)(de)元件(jian)(jian)為(wei):士10%。對(dui)(dui)額定(ding)(ding)功(gong)(gong)率(lv)大(da)于(yu)(yu)100W的(de)(de)元件(jian)(jian)為(wei)+5%~- 10%或10W,取(qu)兩者中的(de)(de)較(jiao)大(da)值(zhi)。
3.泄(xie)露(lu)(lu)電(dian)(dian)(dian)(dian)流(liu)冷態泄(xie)露(lu)(lu)電(dian)(dian)(dian)(dian)流(liu)以及水壓(ya)和密封(feng)試驗(yan)后泄(xie)露(lu)(lu)電(dian)(dian)(dian)(dian)流(liu)應不(bu)超(chao)過0.5mA工作溫度下的熱(re)態泄(xie)露(lu)(lu)電(dian)(dian)(dian)(dian)流(liu)應不(bu)超(chao)過公式中的計算(suan)值,但(dan)不(bu)超(chao)過5mA I=1/6 (tTX0.00001) I一 熱(re)態泄(xie)露(lu)(lu)電(dian)(dian)(dian)(dian)流(liu)mA t-發(fa)熱(re)長度mm T-工作溫度C多個元(yuan)件串聯到電(dian)(dian)(dian)(dian)源(yuan)中時,應以這一組(zu)元(yuan)件為 整體(ti)進行泄(xie)露(lu)(lu)電(dian)(dian)(dian)(dian)流(liu)試驗(yan)。
4. 絕緣(yuan)電(dian)阻(zu)出廠檢(jian)驗(yan)時冷態(tai)絕緣(yuan)電(dian)阻(zu)應(ying)不(bu)(bu)(bu)小(xiao)于(yu)50MQ密(mi)封試驗(yan)后,長期存放或者使用后的(de)絕緣(yuan)電(dian)阻(zu)應(ying)不(bu)(bu)(bu)消與(yu)MQ工作溫度下(xia)的(de)熱(re)態(tai)絕緣(yuan)電(dian)阻(zu)應(ying)不(bu)(bu)(bu)低于(yu)公式中的(de)計算值,但(dan)應(ying)不(bu)(bu)(bu)小(xiao)于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態(tai)絕緣(yuan)電(dian)阻(zu)MQ t一-發 熱(re)長度mmT一工作溫度°C
5.絕緣耐壓強度元(yuan)件應在(zai)規定的(de)試(shi)驗條件和(he)試(shi)驗電壓下保持1min,而無閃絡和(he)擊穿現象
6.經受(shou)通(tong)斷電的能力元件(jian)應能在(zai)規定的試驗條件(jian)下經歷(li)2000次通(tong)斷電試驗,而不發生損壞