防(fang)爆(bao)加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)是一(yi)種消耗電(dian)能(neng)轉換為熱(re)(re)(re)(re)能(neng),來(lai)對(dui)需加(jia)(jia)熱(re)(re)(re)(re)物(wu)料進行加(jia)(jia)熱(re)(re)(re)(re)。防(fang)爆(bao)加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)是由外(wai)(wai)到里外(wai)(wai)殼(不繡鋼(gang)/碳鋼(gang)/銅/鈦材等、發(fa)熱(re)(re)(re)(re)絲(鎳鉻鉛合(he)金(jin))、填充物(wu)(氧化鎂,作(zuo)用(yong)是導熱(re)(re)(re)(re)、絕緣)、外(wai)(wai)殼(不繡鋼(gang)、碳鋼(gang)、鈦材、銅 等)、陶瓷封頭(tou)(作(zuo)用(yong):絕緣)、防(fang)爆(bao)盒組(zu)成的。加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)在(zai)工作(zuo)中低溫(wen)(wen)流(liu)(liu)體(ti)介(jie)質(zhi)通過(guo)管(guan)(guan)道在(zai)壓力作(zuo)用(yong)下進入其輸(shu)入口,沿著電(dian)加(jia)(jia)熱(re)(re)(re)(re)容器內部(bu)特定換熱(re)(re)(re)(re)流(liu)(liu)道,運(yun)用(yong)空(kong)氣電(dian)熱(re)(re)(re)(re)管(guan)(guan)的流(liu)(liu)體(ti)熱(re)(re)(re)(re)力學原(yuan)理設計的路徑,帶走空(kong)氣加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)中的電(dian)熱(re)(re)(re)(re)元件工作(zuo)中所(suo)產生的高溫(wen)(wen)熱(re)(re)(re)(re)能(neng)量,使空(kong)氣加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)被(bei)加(jia)(jia)熱(re)(re)(re)(re)介(jie)質(zhi)溫(wen)(wen)度升高,加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)出口得(de)到工藝要求的高溫(wen)(wen)介(jie)質(zhi)。
產品特點
1.升(sheng)溫(wen)(wen)時間在試驗電壓(ya)下,元件從環境溫(wen)(wen)度升(sheng)至試驗溫(wen)(wen)度時間應(ying)不大于15min
2.額(e)定功(gong)率偏差在充分(fen)發(fa)熱的條件(jian)(jian)下,元(yuan)件(jian)(jian)的額(e)定功(gong)率的偏差應不超過下列規定的范圍;對額(e)定功(gong)率小于(yu)等于(yu)100W的元(yuan)件(jian)(jian)為:士10%。對額(e)定功(gong)率大于(yu)100W的元(yuan)件(jian)(jian)為+5%~- 10%或10W,取兩者中的較大值(zhi)。
3.泄(xie)露(lu)電(dian)(dian)流(liu)冷(leng)態(tai)泄(xie)露(lu)電(dian)(dian)流(liu)以(yi)及水壓和密封試(shi)驗(yan)后(hou)泄(xie)露(lu)電(dian)(dian)流(liu)應(ying)不超過(guo)0.5mA工作(zuo)溫度下的(de)熱態(tai)泄(xie)露(lu)電(dian)(dian)流(liu)應(ying)不超過(guo)公式中(zhong)的(de)計算值,但不超過(guo)5mA I=1/6 (tTX0.00001) I一(yi) 熱態(tai)泄(xie)露(lu)電(dian)(dian)流(liu)mA t-發熱長度mm T-工作(zuo)溫度C多(duo)個(ge)元件串聯到電(dian)(dian)源(yuan)中(zhong)時,應(ying)以(yi)這一(yi)組元件為(wei) 整體進行(xing)泄(xie)露(lu)電(dian)(dian)流(liu)試(shi)驗(yan)。
4. 絕(jue)緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)出廠檢驗(yan)(yan)時冷態(tai)(tai)(tai)絕(jue)緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)應(ying)(ying)不(bu)(bu)小(xiao)于(yu)50MQ密(mi)封試驗(yan)(yan)后,長期存(cun)放或者(zhe)使(shi)用后的(de)絕(jue)緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)應(ying)(ying)不(bu)(bu)消與MQ工作溫(wen)度下的(de)熱(re)態(tai)(tai)(tai)絕(jue)緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)應(ying)(ying)不(bu)(bu)低于(yu)公式中(zhong)的(de)計算值,但(dan)應(ying)(ying)不(bu)(bu)小(xiao)于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態(tai)(tai)(tai)絕(jue)緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)MQ t一(yi)-發 熱(re)長度mmT一(yi)工作溫(wen)度°C
5.絕緣耐壓(ya)強度元件(jian)應在規定的試(shi)驗條件(jian)和試(shi)驗電壓(ya)下保持1min,而無閃絡和擊穿現象
6.經(jing)受(shou)通斷電(dian)(dian)的能(neng)力元件應能(neng)在規定的試驗條件下經(jing)歷2000次通斷電(dian)(dian)試驗,而不發(fa)生(sheng)損(sun)壞