防(fang)爆(bao)加(jia)(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)是(shi)一(yi)種消耗(hao)電(dian)能轉換(huan)為熱(re)(re)(re)能,來對需加(jia)(jia)(jia)(jia)熱(re)(re)(re)物(wu)料進行加(jia)(jia)(jia)(jia)熱(re)(re)(re)。防(fang)爆(bao)加(jia)(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)是(shi)由外到里外殼(不繡鋼(gang)/碳鋼(gang)/銅(tong)/鈦材(cai)等、發熱(re)(re)(re)絲(鎳鉻鉛合金)、填(tian)充物(wu)(氧化鎂,作用(yong)(yong)是(shi)導熱(re)(re)(re)、絕緣)、外殼(不繡鋼(gang)、碳鋼(gang)、鈦材(cai)、銅(tong) 等)、陶瓷封(feng)頭(作用(yong)(yong):絕緣)、防(fang)爆(bao)盒組成的。加(jia)(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)在工(gong)(gong)作中低(di)溫(wen)流體介質(zhi)通過管(guan)(guan)道在壓力作用(yong)(yong)下進入其輸(shu)入口,沿著電(dian)加(jia)(jia)(jia)(jia)熱(re)(re)(re)容(rong)器(qi)內部特定換(huan)熱(re)(re)(re)流道,運(yun)用(yong)(yong)空氣電(dian)熱(re)(re)(re)管(guan)(guan)的流體熱(re)(re)(re)力學原理(li)設(she)計的路徑(jing),帶走空氣加(jia)(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)中的電(dian)熱(re)(re)(re)元(yuan)件工(gong)(gong)作中所產生的高溫(wen)熱(re)(re)(re)能量,使空氣加(jia)(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)被加(jia)(jia)(jia)(jia)熱(re)(re)(re)介質(zhi)溫(wen)度升高,加(jia)(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)出口得(de)到工(gong)(gong)藝要求的高溫(wen)介質(zhi)。
產品特點
1.升(sheng)(sheng)溫(wen)時(shi)間(jian)在試(shi)驗電壓下,元件從環境溫(wen)度(du)(du)升(sheng)(sheng)至試(shi)驗溫(wen)度(du)(du)時(shi)間(jian)應不(bu)大于15min
2.額定功率(lv)偏差在充分發熱(re)的(de)(de)(de)條件(jian)(jian)下(xia),元(yuan)(yuan)件(jian)(jian)的(de)(de)(de)額定功率(lv)的(de)(de)(de)偏差應(ying)不超(chao)過下(xia)列規定的(de)(de)(de)范(fan)圍(wei);對額定功率(lv)小于等于100W的(de)(de)(de)元(yuan)(yuan)件(jian)(jian)為:士10%。對額定功率(lv)大(da)(da)于100W的(de)(de)(de)元(yuan)(yuan)件(jian)(jian)為+5%~- 10%或10W,取兩者中的(de)(de)(de)較大(da)(da)值。
3.泄露(lu)電(dian)(dian)流(liu)冷(leng)態(tai)泄露(lu)電(dian)(dian)流(liu)以(yi)及水壓和密封試(shi)驗(yan)后泄露(lu)電(dian)(dian)流(liu)應不超(chao)過0.5mA工作(zuo)溫(wen)(wen)度(du)下(xia)的熱態(tai)泄露(lu)電(dian)(dian)流(liu)應不超(chao)過公式(shi)中的計算值(zhi),但(dan)不超(chao)過5mA I=1/6 (tTX0.00001) I一 熱態(tai)泄露(lu)電(dian)(dian)流(liu)mA t-發熱長度(du)mm T-工作(zuo)溫(wen)(wen)度(du)C多個(ge)元(yuan)件(jian)串聯到電(dian)(dian)源中時,應以(yi)這一組元(yuan)件(jian)為 整體進行泄露(lu)電(dian)(dian)流(liu)試(shi)驗(yan)。
4. 絕(jue)緣(yuan)電(dian)阻(zu)出廠檢驗時冷態(tai)絕(jue)緣(yuan)電(dian)阻(zu)應(ying)不小于(yu)50MQ密封試驗后,長期(qi)存放或者使用后的(de)絕(jue)緣(yuan)電(dian)阻(zu)應(ying)不消與MQ工(gong)作(zuo)溫度(du)下的(de)熱態(tai)絕(jue)緣(yuan)電(dian)阻(zu)應(ying)不低于(yu)公式中的(de)計算值,但應(ying)不小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)絕(jue)緣(yuan)電(dian)阻(zu)MQ t一-發 熱長度(du)mmT一工(gong)作(zuo)溫度(du)°C
5.絕緣(yuan)耐壓強度元件(jian)應在(zai)規定的試(shi)(shi)驗(yan)條件(jian)和(he)試(shi)(shi)驗(yan)電(dian)壓下保(bao)持1min,而(er)無閃絡和(he)擊穿(chuan)現象
6.經受通(tong)斷(duan)(duan)電的(de)(de)能力元件應能在規定的(de)(de)試(shi)驗條(tiao)件下經歷2000次通(tong)斷(duan)(duan)電試(shi)驗,而不(bu)發生損(sun)壞