防爆(bao)加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)是(shi)(shi)一種(zhong)消耗電(dian)能(neng)轉換為(wei)熱(re)(re)(re)(re)能(neng),來對(dui)需(xu)加(jia)(jia)熱(re)(re)(re)(re)物(wu)料進(jin)行(xing)加(jia)(jia)熱(re)(re)(re)(re)。防爆(bao)加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)是(shi)(shi)由外到里外殼(不繡鋼(gang)/碳鋼(gang)/銅(tong)/鈦材等、發熱(re)(re)(re)(re)絲(鎳鉻鉛合金(jin))、填充(chong)物(wu)(氧化鎂,作(zuo)用是(shi)(shi)導熱(re)(re)(re)(re)、絕緣)、外殼(不繡鋼(gang)、碳鋼(gang)、鈦材、銅(tong) 等)、陶瓷封(feng)頭(作(zuo)用:絕緣)、防爆(bao)盒組成的(de)。加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)在工(gong)作(zuo)中(zhong)低溫流體(ti)(ti)介質通過管(guan)(guan)(guan)道(dao)在壓力作(zuo)用下進(jin)入(ru)其(qi)輸(shu)入(ru)口,沿著(zhu)電(dian)加(jia)(jia)熱(re)(re)(re)(re)容(rong)器內部(bu)特定換熱(re)(re)(re)(re)流道(dao),運用空氣電(dian)熱(re)(re)(re)(re)管(guan)(guan)(guan)的(de)流體(ti)(ti)熱(re)(re)(re)(re)力學(xue)原(yuan)理(li)設計的(de)路徑,帶走空氣加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)中(zhong)的(de)電(dian)熱(re)(re)(re)(re)元(yuan)件工(gong)作(zuo)中(zhong)所產生的(de)高溫熱(re)(re)(re)(re)能(neng)量,使(shi)空氣加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)被加(jia)(jia)熱(re)(re)(re)(re)介質溫度升高,加(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)出口得到工(gong)藝要求的(de)高溫介質。
產品特點
1.升(sheng)溫(wen)時間(jian)在(zai)試(shi)驗(yan)電壓下(xia),元(yuan)件從(cong)環境(jing)溫(wen)度(du)升(sheng)至(zhi)試(shi)驗(yan)溫(wen)度(du)時間(jian)應不(bu)大于15min
2.額(e)定(ding)功率(lv)偏(pian)差(cha)在充分發(fa)熱的條件下(xia),元(yuan)件的額(e)定(ding)功率(lv)的偏(pian)差(cha)應不超過下(xia)列規定(ding)的范(fan)圍(wei);對額(e)定(ding)功率(lv)小于(yu)等(deng)于(yu)100W的元(yuan)件為:士(shi)10%。對額(e)定(ding)功率(lv)大于(yu)100W的元(yuan)件為+5%~- 10%或10W,取兩者中的較大值(zhi)。
3.泄(xie)露電(dian)流冷態泄(xie)露電(dian)流以及水(shui)壓和密封試驗(yan)后(hou)泄(xie)露電(dian)流應(ying)不(bu)超(chao)過(guo)0.5mA工(gong)作溫度下(xia)的熱(re)態泄(xie)露電(dian)流應(ying)不(bu)超(chao)過(guo)公式中(zhong)的計算值,但不(bu)超(chao)過(guo)5mA I=1/6 (tTX0.00001) I一 熱(re)態泄(xie)露電(dian)流mA t-發熱(re)長度mm T-工(gong)作溫度C多個元件串聯(lian)到電(dian)源(yuan)中(zhong)時(shi),應(ying)以這一組元件為 整體進行泄(xie)露電(dian)流試驗(yan)。
4. 絕緣(yuan)(yuan)電(dian)(dian)阻(zu)(zu)出(chu)廠檢驗時冷態絕緣(yuan)(yuan)電(dian)(dian)阻(zu)(zu)應不小(xiao)于50MQ密封試驗后(hou),長(chang)期存放或者使用(yong)后(hou)的(de)絕緣(yuan)(yuan)電(dian)(dian)阻(zu)(zu)應不消與MQ工(gong)作溫度(du)下的(de)熱(re)態絕緣(yuan)(yuan)電(dian)(dian)阻(zu)(zu)應不低于公式中的(de)計算值(zhi),但應不小(xiao)于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態絕緣(yuan)(yuan)電(dian)(dian)阻(zu)(zu)MQ t一-發(fa) 熱(re)長(chang)度(du)mmT一工(gong)作溫度(du)°C
5.絕緣耐壓強度元件應在規定的(de)試驗條件和試驗電壓下(xia)保持1min,而無閃絡和擊穿現(xian)象
6.經受通(tong)斷電的能力(li)元件應(ying)能在規定的試驗(yan)條(tiao)件下(xia)經歷2000次(ci)通(tong)斷電試驗(yan),而不(bu)發生損壞