防爆(bao)加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)是(shi)一種消耗(hao)電能(neng)轉換為熱(re)(re)(re)(re)能(neng),來對需加(jia)(jia)(jia)熱(re)(re)(re)(re)物(wu)料進行(xing)加(jia)(jia)(jia)熱(re)(re)(re)(re)。防爆(bao)加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)是(shi)由外(wai)到里外(wai)殼(不(bu)繡(xiu)鋼(gang)/碳鋼(gang)/銅(tong)/鈦材(cai)等(deng)、發熱(re)(re)(re)(re)絲(鎳鉻鉛(qian)合金)、填(tian)充物(wu)(氧化鎂,作(zuo)(zuo)用是(shi)導熱(re)(re)(re)(re)、絕(jue)緣)、外(wai)殼(不(bu)繡(xiu)鋼(gang)、碳鋼(gang)、鈦材(cai)、銅(tong) 等(deng))、陶(tao)瓷封頭(作(zuo)(zuo)用:絕(jue)緣)、防爆(bao)盒組(zu)成的。加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)在(zai)工作(zuo)(zuo)中(zhong)低溫(wen)流體介質(zhi)(zhi)通過管(guan)(guan)(guan)(guan)道在(zai)壓力作(zuo)(zuo)用下進入其輸入口(kou),沿著電加(jia)(jia)(jia)熱(re)(re)(re)(re)容器內部特定換熱(re)(re)(re)(re)流道,運用空氣電熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)的流體熱(re)(re)(re)(re)力學原理設計(ji)的路(lu)徑,帶走空氣加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)中(zhong)的電熱(re)(re)(re)(re)元件工作(zuo)(zuo)中(zhong)所產(chan)生的高(gao)溫(wen)熱(re)(re)(re)(re)能(neng)量,使空氣加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)被(bei)加(jia)(jia)(jia)熱(re)(re)(re)(re)介質(zhi)(zhi)溫(wen)度升高(gao),加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)出口(kou)得到工藝要求的高(gao)溫(wen)介質(zhi)(zhi)。
產(chan)品特點
1.升(sheng)溫時間在(zai)試驗(yan)電壓下,元件從環(huan)境溫度(du)升(sheng)至(zhi)試驗(yan)溫度(du)時間應不大(da)于15min
2.額(e)定功(gong)率(lv)(lv)(lv)偏差(cha)在充分(fen)發熱的(de)(de)條件(jian)(jian)(jian)下,元(yuan)件(jian)(jian)(jian)的(de)(de)額(e)定功(gong)率(lv)(lv)(lv)的(de)(de)偏差(cha)應不超過下列規定的(de)(de)范圍;對額(e)定功(gong)率(lv)(lv)(lv)小于等于100W的(de)(de)元(yuan)件(jian)(jian)(jian)為(wei)(wei):士10%。對額(e)定功(gong)率(lv)(lv)(lv)大(da)于100W的(de)(de)元(yuan)件(jian)(jian)(jian)為(wei)(wei)+5%~- 10%或10W,取兩者中的(de)(de)較(jiao)大(da)值。
3.泄(xie)(xie)露電(dian)(dian)流冷態(tai)(tai)泄(xie)(xie)露電(dian)(dian)流以及(ji)水壓和密封試(shi)驗后泄(xie)(xie)露電(dian)(dian)流應(ying)不(bu)超過0.5mA工作(zuo)溫度(du)下的熱(re)(re)態(tai)(tai)泄(xie)(xie)露電(dian)(dian)流應(ying)不(bu)超過公式中的計算值,但不(bu)超過5mA I=1/6 (tTX0.00001) I一(yi)(yi) 熱(re)(re)態(tai)(tai)泄(xie)(xie)露電(dian)(dian)流mA t-發熱(re)(re)長度(du)mm T-工作(zuo)溫度(du)C多個元(yuan)件(jian)(jian)串(chuan)聯到電(dian)(dian)源中時,應(ying)以這(zhe)一(yi)(yi)組元(yuan)件(jian)(jian)為 整體(ti)進(jin)行泄(xie)(xie)露電(dian)(dian)流試(shi)驗。
4. 絕(jue)緣(yuan)電(dian)阻(zu)出廠(chang)檢(jian)驗時冷態(tai)(tai)絕(jue)緣(yuan)電(dian)阻(zu)應(ying)不(bu)小于(yu)(yu)(yu)50MQ密(mi)封試驗后,長期(qi)存放或(huo)者使用后的(de)絕(jue)緣(yuan)電(dian)阻(zu)應(ying)不(bu)消與MQ工(gong)作(zuo)溫度(du)下的(de)熱態(tai)(tai)絕(jue)緣(yuan)電(dian)阻(zu)應(ying)不(bu)低于(yu)(yu)(yu)公式(shi)中的(de)計算值(zhi),但應(ying)不(bu)小于(yu)(yu)(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)(tai)絕(jue)緣(yuan)電(dian)阻(zu)MQ t一-發(fa) 熱長度(du)mmT一工(gong)作(zuo)溫度(du)°C
5.絕緣(yuan)耐壓強度元件應在規定的試(shi)驗條件和試(shi)驗電壓下保持1min,而無閃(shan)絡和擊穿現象(xiang)
6.經(jing)受(shou)通斷電的能力元(yuan)件應能在(zai)規定(ding)的試驗(yan)條件下經(jing)歷(li)2000次通斷電試驗(yan),而不發生損壞