防(fang)爆(bao)(bao)加(jia)(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)是(shi)一種(zhong)消耗電(dian)能(neng)(neng)轉換為熱(re)(re)(re)能(neng)(neng),來對需(xu)加(jia)(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)物料進行加(jia)(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)。防(fang)爆(bao)(bao)加(jia)(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)是(shi)由外(wai)(wai)到里(li)外(wai)(wai)殼(不繡鋼/碳鋼/銅(tong)(tong)/鈦材等(deng)、發熱(re)(re)(re)絲(鎳鉻鉛合金)、填充物(氧(yang)化(hua)鎂,作用(yong)是(shi)導熱(re)(re)(re)、絕(jue)(jue)緣(yuan))、外(wai)(wai)殼(不繡鋼、碳鋼、鈦材、銅(tong)(tong) 等(deng))、陶瓷封頭(tou)(作用(yong):絕(jue)(jue)緣(yuan))、防(fang)爆(bao)(bao)盒(he)組(zu)成的(de)(de)。加(jia)(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)在工(gong)作中低溫(wen)流體介(jie)質通過(guo)管(guan)(guan)道(dao)在壓力作用(yong)下進入其(qi)輸入口(kou),沿著電(dian)加(jia)(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)容(rong)器(qi)內部(bu)特定換熱(re)(re)(re)流道(dao),運用(yong)空氣電(dian)熱(re)(re)(re)管(guan)(guan)的(de)(de)流體熱(re)(re)(re)力學原理設(she)計的(de)(de)路徑,帶走空氣加(jia)(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)中的(de)(de)電(dian)熱(re)(re)(re)元件工(gong)作中所(suo)產生的(de)(de)高(gao)溫(wen)熱(re)(re)(re)能(neng)(neng)量,使空氣加(jia)(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)被加(jia)(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)介(jie)質溫(wen)度升高(gao),加(jia)(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)出口(kou)得(de)到工(gong)藝要求的(de)(de)高(gao)溫(wen)介(jie)質。
產品特(te)點
1.升溫時間在試驗電壓(ya)下,元(yuan)件從環境溫度升至試驗溫度時間應不大(da)于15min
2.額定(ding)(ding)(ding)功率(lv)(lv)偏差在充(chong)分(fen)發熱的(de)條件(jian)下,元件(jian)的(de)額定(ding)(ding)(ding)功率(lv)(lv)的(de)偏差應不超過下列規定(ding)(ding)(ding)的(de)范圍(wei);對(dui)額定(ding)(ding)(ding)功率(lv)(lv)小(xiao)于等于100W的(de)元件(jian)為:士(shi)10%。對(dui)額定(ding)(ding)(ding)功率(lv)(lv)大于100W的(de)元件(jian)為+5%~- 10%或10W,取(qu)兩者中的(de)較大值。
3.泄(xie)露(lu)電(dian)(dian)流(liu)(liu)(liu)冷態(tai)泄(xie)露(lu)電(dian)(dian)流(liu)(liu)(liu)以及水壓和(he)密封試(shi)驗后泄(xie)露(lu)電(dian)(dian)流(liu)(liu)(liu)應不(bu)超過(guo)0.5mA工(gong)作溫度(du)下(xia)的熱態(tai)泄(xie)露(lu)電(dian)(dian)流(liu)(liu)(liu)應不(bu)超過(guo)公式(shi)中的計算值(zhi),但不(bu)超過(guo)5mA I=1/6 (tTX0.00001) I一 熱態(tai)泄(xie)露(lu)電(dian)(dian)流(liu)(liu)(liu)mA t-發熱長度(du)mm T-工(gong)作溫度(du)C多(duo)個元件串聯到電(dian)(dian)源中時,應以這一組(zu)元件為 整體進行(xing)泄(xie)露(lu)電(dian)(dian)流(liu)(liu)(liu)試(shi)驗。
4. 絕(jue)(jue)緣電(dian)阻出(chu)廠檢驗時冷(leng)態(tai)絕(jue)(jue)緣電(dian)阻應不小(xiao)于(yu)50MQ密(mi)封試驗后,長(chang)期(qi)存放或(huo)者使用(yong)后的絕(jue)(jue)緣電(dian)阻應不消與MQ工(gong)作(zuo)溫度(du)下(xia)的熱態(tai)絕(jue)(jue)緣電(dian)阻應不低(di)于(yu)公式中的計算值,但應不小(xiao)于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)絕(jue)(jue)緣電(dian)阻MQ t一(yi)(yi)-發 熱長(chang)度(du)mmT一(yi)(yi)工(gong)作(zuo)溫度(du)°C
5.絕緣耐壓強度元件應在(zai)規定(ding)的試驗條件和(he)試驗電壓下保持1min,而無閃絡和(he)擊穿(chuan)現象
6.經受通斷電的能力元件應能在規定的試驗條件下經歷2000次通斷電試驗,而不發生損壞(huai)