防(fang)爆(bao)(bao)加(jia)(jia)(jia)熱(re)(re)管(guan)(guan)是(shi)一種消耗電(dian)能轉換為(wei)熱(re)(re)能,來對需加(jia)(jia)(jia)熱(re)(re)物料進行(xing)加(jia)(jia)(jia)熱(re)(re)。防(fang)爆(bao)(bao)加(jia)(jia)(jia)熱(re)(re)管(guan)(guan)是(shi)由外到(dao)里(li)外殼(ke)(不(bu)繡(xiu)鋼/碳鋼/銅(tong)/鈦(tai)材等、發(fa)熱(re)(re)絲(si)(鎳鉻鉛合金)、填(tian)充物(氧化鎂,作(zuo)用是(shi)導熱(re)(re)、絕(jue)緣)、外殼(ke)(不(bu)繡(xiu)鋼、碳鋼、鈦(tai)材、銅(tong) 等)、陶(tao)瓷封頭(作(zuo)用:絕(jue)緣)、防(fang)爆(bao)(bao)盒組成的(de)(de)。加(jia)(jia)(jia)熱(re)(re)管(guan)(guan)在工(gong)作(zuo)中(zhong)低溫流體介質通過(guo)管(guan)(guan)道(dao)在壓力作(zuo)用下(xia)進入(ru)其輸入(ru)口,沿著電(dian)加(jia)(jia)(jia)熱(re)(re)容器內(nei)部特定換熱(re)(re)流道(dao),運用空(kong)氣電(dian)熱(re)(re)管(guan)(guan)的(de)(de)流體熱(re)(re)力學原理設(she)計的(de)(de)路(lu)徑,帶走空(kong)氣加(jia)(jia)(jia)熱(re)(re)管(guan)(guan)中(zhong)的(de)(de)電(dian)熱(re)(re)元件工(gong)作(zuo)中(zhong)所產生的(de)(de)高溫熱(re)(re)能量(liang),使空(kong)氣加(jia)(jia)(jia)熱(re)(re)管(guan)(guan)被加(jia)(jia)(jia)熱(re)(re)介質溫度升高,加(jia)(jia)(jia)熱(re)(re)管(guan)(guan)出口得到(dao)工(gong)藝要求的(de)(de)高溫介質。
產品特點(dian)
1.升(sheng)溫時間(jian)在試驗電壓下,元件從環境溫度(du)升(sheng)至試驗溫度(du)時間(jian)應不大于(yu)15min
2.額(e)(e)定功(gong)率偏差在充分(fen)發熱的(de)條件下,元(yuan)(yuan)件的(de)額(e)(e)定功(gong)率的(de)偏差應不超過下列(lie)規定的(de)范圍;對(dui)額(e)(e)定功(gong)率小于等于100W的(de)元(yuan)(yuan)件為:士10%。對(dui)額(e)(e)定功(gong)率大(da)于100W的(de)元(yuan)(yuan)件為+5%~- 10%或10W,取兩者中的(de)較大(da)值。
3.泄露(lu)(lu)電(dian)(dian)(dian)流(liu)冷態(tai)(tai)泄露(lu)(lu)電(dian)(dian)(dian)流(liu)以及水壓和密封試驗(yan)后泄露(lu)(lu)電(dian)(dian)(dian)流(liu)應不(bu)(bu)超過0.5mA工(gong)作溫度(du)(du)下的熱(re)態(tai)(tai)泄露(lu)(lu)電(dian)(dian)(dian)流(liu)應不(bu)(bu)超過公式(shi)中(zhong)(zhong)的計算值,但(dan)不(bu)(bu)超過5mA I=1/6 (tTX0.00001) I一 熱(re)態(tai)(tai)泄露(lu)(lu)電(dian)(dian)(dian)流(liu)mA t-發熱(re)長度(du)(du)mm T-工(gong)作溫度(du)(du)C多個元件(jian)串聯(lian)到電(dian)(dian)(dian)源中(zhong)(zhong)時(shi),應以這一組元件(jian)為 整體進(jin)行泄露(lu)(lu)電(dian)(dian)(dian)流(liu)試驗(yan)。
4. 絕緣電(dian)阻(zu)出(chu)廠檢驗時冷態(tai)(tai)絕緣電(dian)阻(zu)應不(bu)小(xiao)于(yu)50MQ密封試驗后,長期(qi)存(cun)放(fang)或者使用后的(de)(de)絕緣電(dian)阻(zu)應不(bu)消與MQ工作溫(wen)度(du)下的(de)(de)熱態(tai)(tai)絕緣電(dian)阻(zu)應不(bu)低于(yu)公(gong)式中的(de)(de)計算值,但應不(bu)小(xiao)于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)(tai)絕緣電(dian)阻(zu)MQ t一-發(fa) 熱長度(du)mmT一工作溫(wen)度(du)°C
5.絕緣耐壓強度元件(jian)應在規定的試驗(yan)條件(jian)和試驗(yan)電壓下保持1min,而無(wu)閃絡和擊(ji)穿現象
6.經受通斷電(dian)的能力元(yuan)件(jian)應能在規(gui)定的試驗(yan)條件(jian)下經歷(li)2000次通斷電(dian)試驗(yan),而不發生(sheng)損壞