防爆加(jia)(jia)熱(re)(re)管(guan)(guan)(guan)(guan)是(shi)一(yi)種消耗電(dian)能轉換(huan)(huan)為熱(re)(re)能,來對需加(jia)(jia)熱(re)(re)物料進行加(jia)(jia)熱(re)(re)。防爆加(jia)(jia)熱(re)(re)管(guan)(guan)(guan)(guan)是(shi)由外(wai)到里外(wai)殼(不繡鋼(gang)/碳(tan)(tan)鋼(gang)/銅/鈦材等、發熱(re)(re)絲(鎳鉻鉛合金)、填充物(氧化鎂,作用(yong)是(shi)導熱(re)(re)、絕緣)、外(wai)殼(不繡鋼(gang)、碳(tan)(tan)鋼(gang)、鈦材、銅 等)、陶瓷封頭(作用(yong):絕緣)、防爆盒(he)組成的(de)(de)。加(jia)(jia)熱(re)(re)管(guan)(guan)(guan)(guan)在(zai)工(gong)作中低溫流(liu)體(ti)介(jie)質(zhi)通過管(guan)(guan)(guan)(guan)道(dao)在(zai)壓(ya)力(li)作用(yong)下進入其輸入口,沿著電(dian)加(jia)(jia)熱(re)(re)容器內部特定換(huan)(huan)熱(re)(re)流(liu)道(dao),運(yun)用(yong)空(kong)(kong)氣(qi)(qi)電(dian)熱(re)(re)管(guan)(guan)(guan)(guan)的(de)(de)流(liu)體(ti)熱(re)(re)力(li)學原理(li)設(she)計(ji)的(de)(de)路徑,帶走空(kong)(kong)氣(qi)(qi)加(jia)(jia)熱(re)(re)管(guan)(guan)(guan)(guan)中的(de)(de)電(dian)熱(re)(re)元件工(gong)作中所產(chan)生的(de)(de)高溫熱(re)(re)能量,使空(kong)(kong)氣(qi)(qi)加(jia)(jia)熱(re)(re)管(guan)(guan)(guan)(guan)被加(jia)(jia)熱(re)(re)介(jie)質(zhi)溫度升高,加(jia)(jia)熱(re)(re)管(guan)(guan)(guan)(guan)出口得到工(gong)藝(yi)要求的(de)(de)高溫介(jie)質(zhi)。
產(chan)品特點
1.升溫時(shi)間(jian)在試驗電壓(ya)下,元件(jian)從環境溫度(du)升至試驗溫度(du)時(shi)間(jian)應不(bu)大于15min
2.額(e)定(ding)功(gong)(gong)率偏(pian)差在充分發熱的(de)條件下(xia),元件的(de)額(e)定(ding)功(gong)(gong)率的(de)偏(pian)差應不(bu)超(chao)過下(xia)列(lie)規定(ding)的(de)范圍;對額(e)定(ding)功(gong)(gong)率小于(yu)等于(yu)100W的(de)元件為:士10%。對額(e)定(ding)功(gong)(gong)率大于(yu)100W的(de)元件為+5%~- 10%或10W,取兩(liang)者中的(de)較大值。
3.泄(xie)露電(dian)(dian)流(liu)冷態(tai)泄(xie)露電(dian)(dian)流(liu)以及水壓(ya)和密(mi)封試(shi)驗(yan)后泄(xie)露電(dian)(dian)流(liu)應(ying)不超(chao)過0.5mA工作溫度(du)下(xia)的熱態(tai)泄(xie)露電(dian)(dian)流(liu)應(ying)不超(chao)過公式中的計算(suan)值,但不超(chao)過5mA I=1/6 (tTX0.00001) I一 熱態(tai)泄(xie)露電(dian)(dian)流(liu)mA t-發熱長度(du)mm T-工作溫度(du)C多個元件(jian)串聯到電(dian)(dian)源中時(shi),應(ying)以這一組元件(jian)為 整體進行泄(xie)露電(dian)(dian)流(liu)試(shi)驗(yan)。
4. 絕緣(yuan)(yuan)電(dian)阻出(chu)廠(chang)檢驗(yan)(yan)時冷(leng)態(tai)絕緣(yuan)(yuan)電(dian)阻應不(bu)小于50MQ密封試驗(yan)(yan)后,長(chang)期(qi)存(cun)放或者使用(yong)后的(de)(de)絕緣(yuan)(yuan)電(dian)阻應不(bu)消與MQ工作溫(wen)度下(xia)的(de)(de)熱態(tai)絕緣(yuan)(yuan)電(dian)阻應不(bu)低于公式(shi)中的(de)(de)計算(suan)值,但(dan)應不(bu)小于1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)絕緣(yuan)(yuan)電(dian)阻MQ t一-發 熱長(chang)度mmT一工作溫(wen)度°C
5.絕緣耐壓(ya)強(qiang)度元件(jian)應在規(gui)定(ding)的試驗條件(jian)和試驗電壓(ya)下(xia)保持1min,而無閃絡(luo)和擊穿(chuan)現象
6.經(jing)受通斷電(dian)的能(neng)力元件應(ying)能(neng)在規定的試(shi)驗條件下(xia)經(jing)歷2000次(ci)通斷電(dian)試(shi)驗,而(er)不發生(sheng)損壞