防(fang)爆(bao)(bao)加(jia)熱(re)(re)(re)(re)管(guan)是一種消耗電(dian)能轉換為熱(re)(re)(re)(re)能,來對需(xu)加(jia)熱(re)(re)(re)(re)物(wu)料進(jin)(jin)行(xing)加(jia)熱(re)(re)(re)(re)。防(fang)爆(bao)(bao)加(jia)熱(re)(re)(re)(re)管(guan)是由外到里外殼(不繡(xiu)鋼/碳(tan)鋼/銅(tong)/鈦材等(deng)、發(fa)熱(re)(re)(re)(re)絲(鎳(nie)鉻鉛合金(jin))、填充物(wu)(氧化鎂,作(zuo)用(yong)是導熱(re)(re)(re)(re)、絕緣(yuan))、外殼(不繡(xiu)鋼、碳(tan)鋼、鈦材、銅(tong) 等(deng))、陶瓷(ci)封頭(作(zuo)用(yong):絕緣(yuan))、防(fang)爆(bao)(bao)盒組成(cheng)的(de)。加(jia)熱(re)(re)(re)(re)管(guan)在工作(zuo)中低溫(wen)(wen)流(liu)體介(jie)(jie)質(zhi)通(tong)過管(guan)道在壓力作(zuo)用(yong)下進(jin)(jin)入其輸入口(kou),沿(yan)著(zhu)電(dian)加(jia)熱(re)(re)(re)(re)容(rong)器內部特定(ding)換熱(re)(re)(re)(re)流(liu)道,運用(yong)空(kong)氣(qi)(qi)電(dian)熱(re)(re)(re)(re)管(guan)的(de)流(liu)體熱(re)(re)(re)(re)力學原(yuan)理設計的(de)路徑,帶走空(kong)氣(qi)(qi)加(jia)熱(re)(re)(re)(re)管(guan)中的(de)電(dian)熱(re)(re)(re)(re)元(yuan)件工作(zuo)中所產生的(de)高溫(wen)(wen)熱(re)(re)(re)(re)能量,使空(kong)氣(qi)(qi)加(jia)熱(re)(re)(re)(re)管(guan)被加(jia)熱(re)(re)(re)(re)介(jie)(jie)質(zhi)溫(wen)(wen)度升高,加(jia)熱(re)(re)(re)(re)管(guan)出口(kou)得到工藝要求的(de)高溫(wen)(wen)介(jie)(jie)質(zhi)。
產品特(te)點
1.升溫(wen)時間在試驗(yan)電壓(ya)下,元件從(cong)環境溫(wen)度(du)升至試驗(yan)溫(wen)度(du)時間應不大于15min
2.額定功率(lv)偏(pian)(pian)差在充分發(fa)熱的(de)條件(jian)下,元(yuan)件(jian)的(de)額定功率(lv)的(de)偏(pian)(pian)差應(ying)不超過(guo)下列(lie)規定的(de)范(fan)圍(wei);對額定功率(lv)小于(yu)等于(yu)100W的(de)元(yuan)件(jian)為:士10%。對額定功率(lv)大(da)于(yu)100W的(de)元(yuan)件(jian)為+5%~- 10%或10W,取兩(liang)者(zhe)中的(de)較大(da)值。
3.泄(xie)露(lu)電(dian)(dian)(dian)流冷態(tai)(tai)泄(xie)露(lu)電(dian)(dian)(dian)流以(yi)及(ji)水壓和密封試驗(yan)后泄(xie)露(lu)電(dian)(dian)(dian)流應不(bu)超過0.5mA工作(zuo)溫度(du)下的熱態(tai)(tai)泄(xie)露(lu)電(dian)(dian)(dian)流應不(bu)超過公式中的計算(suan)值(zhi),但(dan)不(bu)超過5mA I=1/6 (tTX0.00001) I一(yi) 熱態(tai)(tai)泄(xie)露(lu)電(dian)(dian)(dian)流mA t-發熱長度(du)mm T-工作(zuo)溫度(du)C多個元件串聯到電(dian)(dian)(dian)源中時(shi),應以(yi)這一(yi)組元件為(wei) 整體進行泄(xie)露(lu)電(dian)(dian)(dian)流試驗(yan)。
4. 絕(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)出廠檢(jian)驗時冷(leng)態絕(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)應不(bu)小于(yu)50MQ密封試(shi)驗后,長(chang)期(qi)存放或者使用后的(de)(de)絕(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)應不(bu)消與(yu)MQ工(gong)(gong)作(zuo)溫度(du)(du)下(xia)的(de)(de)熱態絕(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)應不(bu)低于(yu)公式中(zhong)的(de)(de)計算值,但應不(bu)小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態絕(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)(zu)MQ t一-發 熱長(chang)度(du)(du)mmT一工(gong)(gong)作(zuo)溫度(du)(du)°C
5.絕緣耐壓強度元件(jian)應在(zai)規定的試驗(yan)條件(jian)和試驗(yan)電(dian)壓下保持1min,而無閃絡和擊穿現(xian)象(xiang)
6.經受通(tong)斷電(dian)(dian)的能(neng)力元件應(ying)能(neng)在規定(ding)的試(shi)驗(yan)條件下經歷2000次通(tong)斷電(dian)(dian)試(shi)驗(yan),而不發生損壞