防(fang)(fang)爆(bao)(bao)加(jia)熱(re)(re)(re)管(guan)(guan)是一種消耗(hao)電(dian)(dian)能轉換為熱(re)(re)(re)能,來(lai)對需加(jia)熱(re)(re)(re)物料(liao)進行加(jia)熱(re)(re)(re)。防(fang)(fang)爆(bao)(bao)加(jia)熱(re)(re)(re)管(guan)(guan)是由外到(dao)里(li)外殼(不(bu)繡鋼/碳(tan)鋼/銅/鈦(tai)材等、發熱(re)(re)(re)絲(鎳(nie)鉻鉛合金)、填充物(氧化鎂,作(zuo)(zuo)(zuo)用是導熱(re)(re)(re)、絕緣)、外殼(不(bu)繡鋼、碳(tan)鋼、鈦(tai)材、銅 等)、陶瓷封頭(作(zuo)(zuo)(zuo)用:絕緣)、防(fang)(fang)爆(bao)(bao)盒(he)組(zu)成的(de)(de)。加(jia)熱(re)(re)(re)管(guan)(guan)在工(gong)作(zuo)(zuo)(zuo)中(zhong)低(di)溫(wen)流(liu)體介質(zhi)通過管(guan)(guan)道(dao)在壓力作(zuo)(zuo)(zuo)用下(xia)進入其輸入口(kou),沿(yan)著電(dian)(dian)加(jia)熱(re)(re)(re)容器內部特定換熱(re)(re)(re)流(liu)道(dao),運(yun)用空(kong)氣電(dian)(dian)熱(re)(re)(re)管(guan)(guan)的(de)(de)流(liu)體熱(re)(re)(re)力學原理設計的(de)(de)路徑(jing),帶走空(kong)氣加(jia)熱(re)(re)(re)管(guan)(guan)中(zhong)的(de)(de)電(dian)(dian)熱(re)(re)(re)元件工(gong)作(zuo)(zuo)(zuo)中(zhong)所產生的(de)(de)高(gao)(gao)溫(wen)熱(re)(re)(re)能量,使空(kong)氣加(jia)熱(re)(re)(re)管(guan)(guan)被加(jia)熱(re)(re)(re)介質(zhi)溫(wen)度升高(gao)(gao),加(jia)熱(re)(re)(re)管(guan)(guan)出口(kou)得到(dao)工(gong)藝要求(qiu)的(de)(de)高(gao)(gao)溫(wen)介質(zhi)。
產品特點
1.升溫(wen)時(shi)間在(zai)試驗電壓下,元件從環境(jing)溫(wen)度升至試驗溫(wen)度時(shi)間應不大于15min
2.額(e)定(ding)(ding)功(gong)率(lv)偏差在(zai)充分發熱(re)的(de)(de)(de)條件(jian)下,元(yuan)件(jian)的(de)(de)(de)額(e)定(ding)(ding)功(gong)率(lv)的(de)(de)(de)偏差應(ying)不(bu)超(chao)過下列規定(ding)(ding)的(de)(de)(de)范(fan)圍;對額(e)定(ding)(ding)功(gong)率(lv)小于等于100W的(de)(de)(de)元(yuan)件(jian)為:士10%。對額(e)定(ding)(ding)功(gong)率(lv)大(da)于100W的(de)(de)(de)元(yuan)件(jian)為+5%~- 10%或10W,取(qu)兩者中的(de)(de)(de)較(jiao)大(da)值。
3.泄露(lu)電(dian)(dian)(dian)流冷(leng)態泄露(lu)電(dian)(dian)(dian)流以(yi)及水壓和密封(feng)試驗后泄露(lu)電(dian)(dian)(dian)流應(ying)不超過(guo)(guo)0.5mA工作溫(wen)度下的熱(re)(re)態泄露(lu)電(dian)(dian)(dian)流應(ying)不超過(guo)(guo)公式中(zhong)的計算值,但(dan)不超過(guo)(guo)5mA I=1/6 (tTX0.00001) I一(yi) 熱(re)(re)態泄露(lu)電(dian)(dian)(dian)流mA t-發熱(re)(re)長度mm T-工作溫(wen)度C多個元(yuan)件串聯(lian)到電(dian)(dian)(dian)源中(zhong)時(shi),應(ying)以(yi)這一(yi)組元(yuan)件為 整體進行泄露(lu)電(dian)(dian)(dian)流試驗。
4. 絕緣(yuan)(yuan)電(dian)(dian)阻出廠(chang)檢驗(yan)時冷態(tai)絕緣(yuan)(yuan)電(dian)(dian)阻應不(bu)小于50MQ密封試驗(yan)后(hou),長(chang)期存放或者使(shi)用(yong)后(hou)的(de)絕緣(yuan)(yuan)電(dian)(dian)阻應不(bu)消(xiao)與MQ工作溫度下的(de)熱(re)(re)態(tai)絕緣(yuan)(yuan)電(dian)(dian)阻應不(bu)低于公(gong)式中的(de)計算值,但應不(bu)小于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)(re)態(tai)絕緣(yuan)(yuan)電(dian)(dian)阻MQ t一-發 熱(re)(re)長(chang)度mmT一工作溫度°C
5.絕緣耐壓強度元件應在規(gui)定的試驗條件和試驗電壓下保持1min,而無閃絡(luo)和擊(ji)穿(chuan)現象
6.經受(shou)通(tong)斷電的能力元件應能在規定的試驗條件下經歷2000次通(tong)斷電試驗,而不(bu)發(fa)生損壞