防(fang)(fang)爆(bao)加(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)(guan)是一(yi)種消耗電(dian)(dian)能(neng)轉換為熱(re)(re)(re)能(neng),來對需加(jia)(jia)(jia)熱(re)(re)(re)物(wu)(wu)料進行加(jia)(jia)(jia)熱(re)(re)(re)。防(fang)(fang)爆(bao)加(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)(guan)是由外到(dao)里(li)外殼(ke)(不繡鋼(gang)/碳鋼(gang)/銅/鈦材等(deng)、發(fa)熱(re)(re)(re)絲(鎳鉻鉛(qian)合金(jin))、填充物(wu)(wu)(氧化鎂,作(zuo)(zuo)用(yong)是導熱(re)(re)(re)、絕緣(yuan))、外殼(ke)(不繡鋼(gang)、碳鋼(gang)、鈦材、銅 等(deng))、陶瓷(ci)封(feng)頭(作(zuo)(zuo)用(yong):絕緣(yuan))、防(fang)(fang)爆(bao)盒組成的。加(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)(guan)在工(gong)作(zuo)(zuo)中低溫(wen)流(liu)體介(jie)質通過管(guan)(guan)(guan)(guan)道在壓力作(zuo)(zuo)用(yong)下進入(ru)其輸入(ru)口,沿著電(dian)(dian)加(jia)(jia)(jia)熱(re)(re)(re)容(rong)器(qi)內部特(te)定換熱(re)(re)(re)流(liu)道,運用(yong)空氣(qi)電(dian)(dian)熱(re)(re)(re)管(guan)(guan)(guan)(guan)的流(liu)體熱(re)(re)(re)力學原理設計的路徑,帶走空氣(qi)加(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)(guan)中的電(dian)(dian)熱(re)(re)(re)元件(jian)工(gong)作(zuo)(zuo)中所產生(sheng)的高(gao)(gao)溫(wen)熱(re)(re)(re)能(neng)量,使空氣(qi)加(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)(guan)被加(jia)(jia)(jia)熱(re)(re)(re)介(jie)質溫(wen)度升高(gao)(gao),加(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)(guan)出口得到(dao)工(gong)藝要求(qiu)的高(gao)(gao)溫(wen)介(jie)質。
產品(pin)特點(dian)
1.升溫時間在試驗電壓(ya)下,元件從環(huan)境溫度升至(zhi)試驗溫度時間應(ying)不大于(yu)15min
2.額(e)(e)定(ding)功率(lv)(lv)偏差在充分發(fa)熱的(de)(de)(de)條件(jian)下,元(yuan)件(jian)的(de)(de)(de)額(e)(e)定(ding)功率(lv)(lv)的(de)(de)(de)偏差應不超過(guo)下列規定(ding)的(de)(de)(de)范(fan)圍;對額(e)(e)定(ding)功率(lv)(lv)小于(yu)(yu)等于(yu)(yu)100W的(de)(de)(de)元(yuan)件(jian)為:士10%。對額(e)(e)定(ding)功率(lv)(lv)大于(yu)(yu)100W的(de)(de)(de)元(yuan)件(jian)為+5%~- 10%或10W,取兩者(zhe)中的(de)(de)(de)較(jiao)大值。
3.泄(xie)(xie)露電(dian)流(liu)冷態泄(xie)(xie)露電(dian)流(liu)以(yi)及水壓和密封試驗(yan)后泄(xie)(xie)露電(dian)流(liu)應不(bu)超過(guo)0.5mA工作溫度下的熱(re)態泄(xie)(xie)露電(dian)流(liu)應不(bu)超過(guo)公式中(zhong)的計算值,但不(bu)超過(guo)5mA I=1/6 (tTX0.00001) I一 熱(re)態泄(xie)(xie)露電(dian)流(liu)mA t-發(fa)熱(re)長度mm T-工作溫度C多(duo)個元件串聯到(dao)電(dian)源中(zhong)時,應以(yi)這一組元件為 整體進行泄(xie)(xie)露電(dian)流(liu)試驗(yan)。
4. 絕(jue)(jue)緣(yuan)(yuan)電(dian)阻(zu)出廠(chang)檢驗時冷態(tai)絕(jue)(jue)緣(yuan)(yuan)電(dian)阻(zu)應(ying)(ying)不小(xiao)于50MQ密封試驗后(hou),長期存放(fang)或(huo)者使用后(hou)的絕(jue)(jue)緣(yuan)(yuan)電(dian)阻(zu)應(ying)(ying)不消(xiao)與MQ工(gong)作(zuo)(zuo)溫度下的熱態(tai)絕(jue)(jue)緣(yuan)(yuan)電(dian)阻(zu)應(ying)(ying)不低于公(gong)式中的計算值,但應(ying)(ying)不小(xiao)于1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)絕(jue)(jue)緣(yuan)(yuan)電(dian)阻(zu)MQ t一-發 熱長度mmT一工(gong)作(zuo)(zuo)溫度°C
5.絕緣耐壓強(qiang)度元件應在規定的試驗條件和(he)試驗電壓下保持1min,而無(wu)閃絡和(he)擊穿現象
6.經受通(tong)(tong)斷(duan)電(dian)的(de)能力(li)元件(jian)應能在規定的(de)試驗條件(jian)下(xia)經歷(li)2000次通(tong)(tong)斷(duan)電(dian)試驗,而不(bu)發(fa)生損壞