防爆(bao)加(jia)熱(re)(re)(re)(re)管(guan)(guan)是一種消(xiao)耗電(dian)(dian)(dian)能轉換為熱(re)(re)(re)(re)能,來對(dui)需(xu)加(jia)熱(re)(re)(re)(re)物(wu)料進行(xing)加(jia)熱(re)(re)(re)(re)。防爆(bao)加(jia)熱(re)(re)(re)(re)管(guan)(guan)是由外(wai)到(dao)里外(wai)殼(不(bu)繡(xiu)鋼/碳鋼/銅/鈦(tai)材等(deng)、發熱(re)(re)(re)(re)絲(鎳鉻鉛合(he)金(jin))、填充物(wu)(氧化鎂(mei),作(zuo)(zuo)用(yong)是導熱(re)(re)(re)(re)、絕緣(yuan))、外(wai)殼(不(bu)繡(xiu)鋼、碳鋼、鈦(tai)材、銅 等(deng))、陶瓷封頭(作(zuo)(zuo)用(yong):絕緣(yuan))、防爆(bao)盒組(zu)成的。加(jia)熱(re)(re)(re)(re)管(guan)(guan)在工(gong)(gong)作(zuo)(zuo)中低溫(wen)流體介(jie)質通(tong)過(guo)管(guan)(guan)道(dao)在壓力(li)作(zuo)(zuo)用(yong)下進入其(qi)輸入口,沿著電(dian)(dian)(dian)加(jia)熱(re)(re)(re)(re)容(rong)器內部(bu)特定換熱(re)(re)(re)(re)流道(dao),運用(yong)空(kong)氣電(dian)(dian)(dian)熱(re)(re)(re)(re)管(guan)(guan)的流體熱(re)(re)(re)(re)力(li)學原(yuan)理設計的路徑(jing),帶(dai)走空(kong)氣加(jia)熱(re)(re)(re)(re)管(guan)(guan)中的電(dian)(dian)(dian)熱(re)(re)(re)(re)元件工(gong)(gong)作(zuo)(zuo)中所(suo)產生(sheng)的高(gao)(gao)溫(wen)熱(re)(re)(re)(re)能量,使空(kong)氣加(jia)熱(re)(re)(re)(re)管(guan)(guan)被加(jia)熱(re)(re)(re)(re)介(jie)質溫(wen)度升高(gao)(gao),加(jia)熱(re)(re)(re)(re)管(guan)(guan)出口得(de)到(dao)工(gong)(gong)藝要求的高(gao)(gao)溫(wen)介(jie)質。
產品(pin)特(te)點
1.升溫時(shi)(shi)間(jian)在試驗電壓(ya)下,元件從環境溫度升至試驗溫度時(shi)(shi)間(jian)應不大于15min
2.額(e)定(ding)功(gong)率(lv)偏(pian)差(cha)在充分發熱的(de)條件(jian)下,元件(jian)的(de)額(e)定(ding)功(gong)率(lv)的(de)偏(pian)差(cha)應不超過下列規定(ding)的(de)范(fan)圍;對(dui)額(e)定(ding)功(gong)率(lv)小于等于100W的(de)元件(jian)為(wei):士10%。對(dui)額(e)定(ding)功(gong)率(lv)大于100W的(de)元件(jian)為(wei)+5%~- 10%或(huo)10W,取兩者中(zhong)的(de)較(jiao)大值(zhi)。
3.泄露(lu)電(dian)流(liu)(liu)冷態泄露(lu)電(dian)流(liu)(liu)以及(ji)水壓(ya)和密封試驗(yan)(yan)后泄露(lu)電(dian)流(liu)(liu)應不(bu)超(chao)過(guo)0.5mA工作溫度下的熱(re)態泄露(lu)電(dian)流(liu)(liu)應不(bu)超(chao)過(guo)公式(shi)中(zhong)的計算值,但(dan)不(bu)超(chao)過(guo)5mA I=1/6 (tTX0.00001) I一(yi) 熱(re)態泄露(lu)電(dian)流(liu)(liu)mA t-發(fa)熱(re)長度mm T-工作溫度C多個(ge)元(yuan)件(jian)串聯到電(dian)源中(zhong)時,應以這一(yi)組元(yuan)件(jian)為 整體進行泄露(lu)電(dian)流(liu)(liu)試驗(yan)(yan)。
4. 絕(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)出廠檢(jian)驗時冷態(tai)(tai)絕(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)應(ying)不(bu)小于50MQ密封(feng)試驗后,長期存放或(huo)者使用(yong)后的絕(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)應(ying)不(bu)消(xiao)與MQ工作(zuo)(zuo)溫度下的熱(re)(re)態(tai)(tai)絕(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)應(ying)不(bu)低于公式中的計算值,但應(ying)不(bu)小于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)(re)態(tai)(tai)絕(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)MQ t一-發 熱(re)(re)長度mmT一工作(zuo)(zuo)溫度°C
5.絕緣耐壓強度元件應在規定的(de)試驗條件和(he)試驗電(dian)壓下保(bao)持1min,而無閃絡(luo)和(he)擊穿現象
6.經受通斷(duan)電(dian)的(de)能力元件應能在規定的(de)試驗(yan)(yan)條(tiao)件下經歷(li)2000次(ci)通斷(duan)電(dian)試驗(yan)(yan),而(er)不發生損壞(huai)