防爆加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)是(shi)一(yi)種消耗電(dian)(dian)能轉(zhuan)換(huan)為熱(re)(re)(re)(re)(re)能,來對需加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)物(wu)料進行加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)。防爆加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)是(shi)由(you)外到里外殼(不(bu)繡鋼(gang)/碳(tan)鋼(gang)/銅/鈦材等、發熱(re)(re)(re)(re)(re)絲(si)(鎳鉻鉛合金)、填充物(wu)(氧化(hua)鎂,作(zuo)(zuo)用是(shi)導熱(re)(re)(re)(re)(re)、絕緣)、外殼(不(bu)繡鋼(gang)、碳(tan)鋼(gang)、鈦材、銅 等)、陶瓷封頭(作(zuo)(zuo)用:絕緣)、防爆盒組(zu)成的。加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)在工作(zuo)(zuo)中(zhong)低溫(wen)流(liu)(liu)體介(jie)質通過管(guan)(guan)道(dao)在壓力(li)作(zuo)(zuo)用下進入其(qi)輸入口,沿著電(dian)(dian)加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)容器內部特定換(huan)熱(re)(re)(re)(re)(re)流(liu)(liu)道(dao),運用空氣(qi)電(dian)(dian)熱(re)(re)(re)(re)(re)管(guan)(guan)的流(liu)(liu)體熱(re)(re)(re)(re)(re)力(li)學(xue)原理設計(ji)的路徑(jing),帶走空氣(qi)加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)中(zhong)的電(dian)(dian)熱(re)(re)(re)(re)(re)元件工作(zuo)(zuo)中(zhong)所產生(sheng)的高溫(wen)熱(re)(re)(re)(re)(re)能量,使空氣(qi)加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)被加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)介(jie)質溫(wen)度(du)升高,加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)出口得到工藝要求的高溫(wen)介(jie)質。
產品特點(dian)
1.升溫時間在試驗(yan)電壓下,元件從環境溫度(du)升至試驗(yan)溫度(du)時間應不大于(yu)15min
2.額(e)定(ding)功(gong)率(lv)(lv)偏差在充分發熱的(de)(de)條件(jian)下,元件(jian)的(de)(de)額(e)定(ding)功(gong)率(lv)(lv)的(de)(de)偏差應不超過下列規定(ding)的(de)(de)范(fan)圍(wei);對額(e)定(ding)功(gong)率(lv)(lv)小于(yu)等于(yu)100W的(de)(de)元件(jian)為(wei):士10%。對額(e)定(ding)功(gong)率(lv)(lv)大(da)于(yu)100W的(de)(de)元件(jian)為(wei)+5%~- 10%或10W,取兩者中的(de)(de)較大(da)值。
3.泄(xie)露(lu)(lu)電(dian)流冷態(tai)泄(xie)露(lu)(lu)電(dian)流以及水壓(ya)和密封試驗后泄(xie)露(lu)(lu)電(dian)流應不超(chao)過(guo)0.5mA工作溫度(du)下的熱(re)態(tai)泄(xie)露(lu)(lu)電(dian)流應不超(chao)過(guo)公(gong)式中(zhong)的計算值,但不超(chao)過(guo)5mA I=1/6 (tTX0.00001) I一 熱(re)態(tai)泄(xie)露(lu)(lu)電(dian)流mA t-發熱(re)長度(du)mm T-工作溫度(du)C多個元件串聯(lian)到電(dian)源(yuan)中(zhong)時(shi),應以這一組元件為 整體(ti)進(jin)行泄(xie)露(lu)(lu)電(dian)流試驗。
4. 絕(jue)緣(yuan)電(dian)(dian)阻出廠(chang)檢(jian)驗(yan)(yan)時冷(leng)態絕(jue)緣(yuan)電(dian)(dian)阻應(ying)(ying)不小(xiao)于50MQ密封試驗(yan)(yan)后,長(chang)期存放(fang)或(huo)者(zhe)使(shi)用后的絕(jue)緣(yuan)電(dian)(dian)阻應(ying)(ying)不消與MQ工作溫度下的熱(re)態絕(jue)緣(yuan)電(dian)(dian)阻應(ying)(ying)不低于公式中的計算值(zhi),但(dan)應(ying)(ying)不小(xiao)于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態絕(jue)緣(yuan)電(dian)(dian)阻MQ t一-發 熱(re)長(chang)度mmT一工作溫度°C
5.絕緣耐壓(ya)(ya)強度元件應在規定的試驗條件和試驗電壓(ya)(ya)下(xia)保持1min,而無閃(shan)絡和擊穿現象(xiang)
6.經受通(tong)斷電(dian)的能(neng)力元件應能(neng)在(zai)規定的試驗條件下經歷2000次通(tong)斷電(dian)試驗,而不發(fa)生損壞(huai)