防爆(bao)加(jia)熱(re)(re)(re)(re)管(guan)(guan)是(shi)(shi)一種消(xiao)耗電(dian)(dian)能轉換為熱(re)(re)(re)(re)能,來對需加(jia)熱(re)(re)(re)(re)物料進(jin)行加(jia)熱(re)(re)(re)(re)。防爆(bao)加(jia)熱(re)(re)(re)(re)管(guan)(guan)是(shi)(shi)由(you)外(wai)到(dao)里外(wai)殼(不(bu)繡(xiu)鋼(gang)/碳(tan)鋼(gang)/銅(tong)/鈦材(cai)(cai)等、發熱(re)(re)(re)(re)絲(鎳鉻鉛合(he)金)、填充物(氧化鎂,作用是(shi)(shi)導熱(re)(re)(re)(re)、絕(jue)(jue)緣)、外(wai)殼(不(bu)繡(xiu)鋼(gang)、碳(tan)鋼(gang)、鈦材(cai)(cai)、銅(tong) 等)、陶瓷(ci)封(feng)頭(作用:絕(jue)(jue)緣)、防爆(bao)盒組成的(de)(de)。加(jia)熱(re)(re)(re)(re)管(guan)(guan)在工(gong)(gong)作中(zhong)低溫(wen)(wen)流體介質(zhi)(zhi)通(tong)過(guo)管(guan)(guan)道(dao)在壓力作用下進(jin)入(ru)其輸入(ru)口,沿著電(dian)(dian)加(jia)熱(re)(re)(re)(re)容器內部(bu)特定換熱(re)(re)(re)(re)流道(dao),運用空氣電(dian)(dian)熱(re)(re)(re)(re)管(guan)(guan)的(de)(de)流體熱(re)(re)(re)(re)力學原理設計的(de)(de)路徑,帶(dai)走空氣加(jia)熱(re)(re)(re)(re)管(guan)(guan)中(zhong)的(de)(de)電(dian)(dian)熱(re)(re)(re)(re)元件工(gong)(gong)作中(zhong)所(suo)產生的(de)(de)高(gao)溫(wen)(wen)熱(re)(re)(re)(re)能量,使空氣加(jia)熱(re)(re)(re)(re)管(guan)(guan)被加(jia)熱(re)(re)(re)(re)介質(zhi)(zhi)溫(wen)(wen)度升高(gao),加(jia)熱(re)(re)(re)(re)管(guan)(guan)出口得到(dao)工(gong)(gong)藝要求的(de)(de)高(gao)溫(wen)(wen)介質(zhi)(zhi)。
產品特點
1.升溫時間(jian)在試驗電壓下,元件從(cong)環境溫度升至試驗溫度時間(jian)應不大于15min
2.額定(ding)(ding)功(gong)(gong)率偏差在充(chong)分發熱的(de)(de)條件下,元件的(de)(de)額定(ding)(ding)功(gong)(gong)率的(de)(de)偏差應不超過下列規定(ding)(ding)的(de)(de)范圍(wei);對額定(ding)(ding)功(gong)(gong)率小于(yu)等于(yu)100W的(de)(de)元件為:士10%。對額定(ding)(ding)功(gong)(gong)率大(da)于(yu)100W的(de)(de)元件為+5%~- 10%或10W,取兩者中的(de)(de)較大(da)值。
3.泄(xie)露電(dian)(dian)流(liu)(liu)冷態(tai)泄(xie)露電(dian)(dian)流(liu)(liu)以(yi)及(ji)水(shui)壓和密封試驗后泄(xie)露電(dian)(dian)流(liu)(liu)應不超過(guo)0.5mA工作(zuo)(zuo)溫度下的熱(re)態(tai)泄(xie)露電(dian)(dian)流(liu)(liu)應不超過(guo)公式(shi)中的計(ji)算值,但不超過(guo)5mA I=1/6 (tTX0.00001) I一 熱(re)態(tai)泄(xie)露電(dian)(dian)流(liu)(liu)mA t-發熱(re)長度mm T-工作(zuo)(zuo)溫度C多個元(yuan)件(jian)串聯到電(dian)(dian)源中時,應以(yi)這(zhe)一組(zu)元(yuan)件(jian)為 整體進(jin)行(xing)泄(xie)露電(dian)(dian)流(liu)(liu)試驗。
4. 絕(jue)緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)(zu)(zu)出(chu)廠檢(jian)驗時冷態絕(jue)緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)(zu)(zu)應不(bu)小于50MQ密封(feng)試驗后(hou),長期(qi)存放或(huo)者(zhe)使用(yong)后(hou)的(de)絕(jue)緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)(zu)(zu)應不(bu)消與MQ工(gong)作(zuo)溫(wen)度下(xia)的(de)熱態絕(jue)緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)(zu)(zu)應不(bu)低(di)于公式中的(de)計算(suan)值,但應不(bu)小于1MQ R=「(10-0.015T) /t」X0.001 R熱態絕(jue)緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)(zu)(zu)MQ t一(yi)-發 熱長度mmT一(yi)工(gong)作(zuo)溫(wen)度°C
5.絕緣(yuan)耐壓強度(du)元件應在規定的試驗條(tiao)件和(he)試驗電壓下保(bao)持1min,而無(wu)閃絡和(he)擊穿現(xian)象
6.經受通(tong)斷(duan)電的能力元件應(ying)能在規定(ding)的試(shi)驗條件下(xia)經歷2000次通(tong)斷(duan)電試(shi)驗,而不(bu)發生損壞(huai)