防爆加(jia)熱(re)管(guan)(guan)(guan)(guan)是(shi)(shi)一種消耗電能轉(zhuan)換(huan)為(wei)熱(re)能,來(lai)對需加(jia)熱(re)物(wu)料進(jin)行加(jia)熱(re)。防爆加(jia)熱(re)管(guan)(guan)(guan)(guan)是(shi)(shi)由(you)外(wai)(wai)到里外(wai)(wai)殼(ke)(ke)(不繡鋼/碳鋼/銅(tong)/鈦(tai)材(cai)等(deng)、發熱(re)絲(鎳鉻鉛合金)、填(tian)充物(wu)(氧化(hua)鎂,作(zuo)(zuo)用(yong)是(shi)(shi)導熱(re)、絕緣)、外(wai)(wai)殼(ke)(ke)(不繡鋼、碳鋼、鈦(tai)材(cai)、銅(tong) 等(deng))、陶瓷(ci)封頭(作(zuo)(zuo)用(yong):絕緣)、防爆盒組成的(de)(de)。加(jia)熱(re)管(guan)(guan)(guan)(guan)在工作(zuo)(zuo)中低溫流體介質通過管(guan)(guan)(guan)(guan)道(dao)在壓力(li)作(zuo)(zuo)用(yong)下進(jin)入其(qi)輸入口,沿著(zhu)電加(jia)熱(re)容器內部特定換(huan)熱(re)流道(dao),運用(yong)空(kong)(kong)氣(qi)(qi)電熱(re)管(guan)(guan)(guan)(guan)的(de)(de)流體熱(re)力(li)學原(yuan)理設計的(de)(de)路(lu)徑,帶走(zou)空(kong)(kong)氣(qi)(qi)加(jia)熱(re)管(guan)(guan)(guan)(guan)中的(de)(de)電熱(re)元件工作(zuo)(zuo)中所產生(sheng)的(de)(de)高溫熱(re)能量,使空(kong)(kong)氣(qi)(qi)加(jia)熱(re)管(guan)(guan)(guan)(guan)被加(jia)熱(re)介質溫度(du)升高,加(jia)熱(re)管(guan)(guan)(guan)(guan)出(chu)口得(de)到工藝要求的(de)(de)高溫介質。
產品特點(dian)
1.升(sheng)溫(wen)(wen)時(shi)間(jian)在(zai)試(shi)驗電(dian)壓(ya)下,元件從環境溫(wen)(wen)度升(sheng)至試(shi)驗溫(wen)(wen)度時(shi)間(jian)應不大于15min
2.額定(ding)(ding)功率偏差(cha)在充分發熱(re)的條(tiao)件(jian)(jian)下(xia),元件(jian)(jian)的額定(ding)(ding)功率的偏差(cha)應不超過下(xia)列規定(ding)(ding)的范圍;對(dui)額定(ding)(ding)功率小于(yu)等于(yu)100W的元件(jian)(jian)為:士10%。對(dui)額定(ding)(ding)功率大于(yu)100W的元件(jian)(jian)為+5%~- 10%或10W,取兩者中的較大值。
3.泄(xie)露電流(liu)冷態(tai)泄(xie)露電流(liu)以及水(shui)壓和(he)密封試(shi)驗(yan)后泄(xie)露電流(liu)應不(bu)超(chao)過(guo)(guo)0.5mA工(gong)(gong)作溫度下的熱態(tai)泄(xie)露電流(liu)應不(bu)超(chao)過(guo)(guo)公式中的計算(suan)值,但不(bu)超(chao)過(guo)(guo)5mA I=1/6 (tTX0.00001) I一 熱態(tai)泄(xie)露電流(liu)mA t-發熱長度mm T-工(gong)(gong)作溫度C多個元件(jian)串聯到電源中時,應以這一組元件(jian)為 整體進行(xing)泄(xie)露電流(liu)試(shi)驗(yan)。
4. 絕緣(yuan)(yuan)電阻出廠檢驗(yan)時(shi)冷態絕緣(yuan)(yuan)電阻應不(bu)小于(yu)(yu)50MQ密封試驗(yan)后,長(chang)期存(cun)放或者(zhe)使用后的絕緣(yuan)(yuan)電阻應不(bu)消與MQ工(gong)作溫(wen)度(du)下的熱(re)(re)態絕緣(yuan)(yuan)電阻應不(bu)低于(yu)(yu)公(gong)式中的計算(suan)值,但應不(bu)小于(yu)(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱(re)(re)態絕緣(yuan)(yuan)電阻MQ t一-發(fa) 熱(re)(re)長(chang)度(du)mmT一工(gong)作溫(wen)度(du)°C
5.絕(jue)緣耐壓(ya)強度元件應在規定的(de)試驗(yan)條件和試驗(yan)電(dian)壓(ya)下保持1min,而無(wu)閃絡和擊穿現象
6.經受(shou)通斷(duan)電(dian)的能(neng)力元(yuan)件(jian)應能(neng)在規定的試驗條(tiao)件(jian)下經歷2000次通斷(duan)電(dian)試驗,而不(bu)發(fa)生損(sun)壞