防爆加(jia)(jia)熱(re)(re)(re)(re)(re)(re)管(guan)(guan)是(shi)一種消耗電(dian)(dian)(dian)能(neng)轉(zhuan)換為(wei)熱(re)(re)(re)(re)(re)(re)能(neng),來對需加(jia)(jia)熱(re)(re)(re)(re)(re)(re)物料(liao)進行加(jia)(jia)熱(re)(re)(re)(re)(re)(re)。防爆加(jia)(jia)熱(re)(re)(re)(re)(re)(re)管(guan)(guan)是(shi)由外(wai)(wai)到里外(wai)(wai)殼(ke)(ke)(不繡(xiu)鋼(gang)/碳鋼(gang)/銅/鈦(tai)材(cai)等、發(fa)熱(re)(re)(re)(re)(re)(re)絲(鎳鉻鉛合金(jin))、填(tian)充物(氧化鎂,作(zuo)用(yong)(yong)是(shi)導熱(re)(re)(re)(re)(re)(re)、絕(jue)緣)、外(wai)(wai)殼(ke)(ke)(不繡(xiu)鋼(gang)、碳鋼(gang)、鈦(tai)材(cai)、銅 等)、陶瓷封頭(作(zuo)用(yong)(yong):絕(jue)緣)、防爆盒組成的(de)。加(jia)(jia)熱(re)(re)(re)(re)(re)(re)管(guan)(guan)在(zai)工(gong)作(zuo)中(zhong)(zhong)低溫(wen)(wen)流體介(jie)質通過(guo)管(guan)(guan)道在(zai)壓力作(zuo)用(yong)(yong)下進入其輸(shu)入口(kou),沿著電(dian)(dian)(dian)加(jia)(jia)熱(re)(re)(re)(re)(re)(re)容器(qi)內部特定換熱(re)(re)(re)(re)(re)(re)流道,運用(yong)(yong)空氣電(dian)(dian)(dian)熱(re)(re)(re)(re)(re)(re)管(guan)(guan)的(de)流體熱(re)(re)(re)(re)(re)(re)力學原理(li)設計的(de)路徑,帶走(zou)空氣加(jia)(jia)熱(re)(re)(re)(re)(re)(re)管(guan)(guan)中(zhong)(zhong)的(de)電(dian)(dian)(dian)熱(re)(re)(re)(re)(re)(re)元(yuan)件工(gong)作(zuo)中(zhong)(zhong)所產(chan)生的(de)高溫(wen)(wen)熱(re)(re)(re)(re)(re)(re)能(neng)量,使空氣加(jia)(jia)熱(re)(re)(re)(re)(re)(re)管(guan)(guan)被加(jia)(jia)熱(re)(re)(re)(re)(re)(re)介(jie)質溫(wen)(wen)度升高,加(jia)(jia)熱(re)(re)(re)(re)(re)(re)管(guan)(guan)出(chu)口(kou)得(de)到工(gong)藝要求的(de)高溫(wen)(wen)介(jie)質。
產品特點
1.升溫時間(jian)在試驗電壓下,元件從環境溫度(du)升至試驗溫度(du)時間(jian)應不大于15min
2.額定功率偏差(cha)在充分發熱的條(tiao)件(jian)下,元件(jian)的額定功率的偏差(cha)應不(bu)超過下列規定的范圍;對(dui)額定功率小于等于100W的元件(jian)為:士10%。對(dui)額定功率大于100W的元件(jian)為+5%~- 10%或10W,取兩者中的較大值。
3.泄(xie)(xie)露(lu)電(dian)(dian)(dian)流(liu)冷態泄(xie)(xie)露(lu)電(dian)(dian)(dian)流(liu)以及水壓(ya)和密封(feng)試(shi)驗后(hou)泄(xie)(xie)露(lu)電(dian)(dian)(dian)流(liu)應(ying)不(bu)(bu)超過0.5mA工作(zuo)溫(wen)度下的熱(re)態泄(xie)(xie)露(lu)電(dian)(dian)(dian)流(liu)應(ying)不(bu)(bu)超過公式中(zhong)的計(ji)算值,但不(bu)(bu)超過5mA I=1/6 (tTX0.00001) I一(yi) 熱(re)態泄(xie)(xie)露(lu)電(dian)(dian)(dian)流(liu)mA t-發(fa)熱(re)長度mm T-工作(zuo)溫(wen)度C多個元(yuan)件串聯(lian)到電(dian)(dian)(dian)源(yuan)中(zhong)時(shi),應(ying)以這一(yi)組元(yuan)件為(wei) 整體進行(xing)泄(xie)(xie)露(lu)電(dian)(dian)(dian)流(liu)試(shi)驗。
4. 絕(jue)緣(yuan)電阻(zu)出廠檢驗(yan)(yan)時(shi)冷(leng)態絕(jue)緣(yuan)電阻(zu)應(ying)不小于50MQ密封試驗(yan)(yan)后(hou),長(chang)期存(cun)放或者使用后(hou)的(de)絕(jue)緣(yuan)電阻(zu)應(ying)不消(xiao)與MQ工作溫度(du)下(xia)的(de)熱(re)態絕(jue)緣(yuan)電阻(zu)應(ying)不低于公式(shi)中的(de)計算(suan)值,但應(ying)不小于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態絕(jue)緣(yuan)電阻(zu)MQ t一-發 熱(re)長(chang)度(du)mmT一工作溫度(du)°C
5.絕(jue)緣耐壓強度元件應(ying)在(zai)規定的試驗(yan)條件和試驗(yan)電(dian)壓下保持1min,而無(wu)閃絡和擊穿現象(xiang)
6.經(jing)受通斷(duan)電的(de)能(neng)(neng)力元件(jian)應(ying)能(neng)(neng)在規定的(de)試驗(yan)條件(jian)下經(jing)歷2000次通斷(duan)電試驗(yan),而不發(fa)生損壞