防爆(bao)加(jia)(jia)熱(re)(re)(re)管(guan)(guan)是(shi)一種消耗(hao)電能(neng)轉換(huan)為熱(re)(re)(re)能(neng),來對需加(jia)(jia)熱(re)(re)(re)物料進行(xing)加(jia)(jia)熱(re)(re)(re)。防爆(bao)加(jia)(jia)熱(re)(re)(re)管(guan)(guan)是(shi)由(you)外到(dao)里(li)外殼(不繡鋼(gang)/碳鋼(gang)/銅/鈦材等、發熱(re)(re)(re)絲(鎳鉻鉛(qian)合金)、填(tian)充物(氧化鎂,作(zuo)(zuo)用是(shi)導熱(re)(re)(re)、絕緣)、外殼(不繡鋼(gang)、碳鋼(gang)、鈦材、銅 等)、陶瓷封頭(作(zuo)(zuo)用:絕緣)、防爆(bao)盒組成的(de)(de)。加(jia)(jia)熱(re)(re)(re)管(guan)(guan)在(zai)工(gong)作(zuo)(zuo)中(zhong)低溫(wen)流體介(jie)質通過(guo)管(guan)(guan)道在(zai)壓力作(zuo)(zuo)用下進入其(qi)輸入口(kou),沿(yan)著電加(jia)(jia)熱(re)(re)(re)容器(qi)內部特定(ding)換(huan)熱(re)(re)(re)流道,運用空(kong)(kong)氣電熱(re)(re)(re)管(guan)(guan)的(de)(de)流體熱(re)(re)(re)力學原(yuan)理設計(ji)的(de)(de)路徑,帶走空(kong)(kong)氣加(jia)(jia)熱(re)(re)(re)管(guan)(guan)中(zhong)的(de)(de)電熱(re)(re)(re)元件工(gong)作(zuo)(zuo)中(zhong)所產生(sheng)的(de)(de)高(gao)溫(wen)熱(re)(re)(re)能(neng)量,使空(kong)(kong)氣加(jia)(jia)熱(re)(re)(re)管(guan)(guan)被加(jia)(jia)熱(re)(re)(re)介(jie)質溫(wen)度(du)升高(gao),加(jia)(jia)熱(re)(re)(re)管(guan)(guan)出口(kou)得到(dao)工(gong)藝要求(qiu)的(de)(de)高(gao)溫(wen)介(jie)質。
產品特點
1.升溫時間(jian)在試(shi)驗(yan)電(dian)壓下,元件從環境溫度升至試(shi)驗(yan)溫度時間(jian)應不(bu)大于(yu)15min
2.額定(ding)(ding)(ding)功率偏差在充分發熱的(de)(de)(de)(de)條件(jian)(jian)下(xia),元件(jian)(jian)的(de)(de)(de)(de)額定(ding)(ding)(ding)功率的(de)(de)(de)(de)偏差應不超過下(xia)列(lie)規定(ding)(ding)(ding)的(de)(de)(de)(de)范圍;對(dui)(dui)額定(ding)(ding)(ding)功率小于(yu)(yu)等于(yu)(yu)100W的(de)(de)(de)(de)元件(jian)(jian)為:士10%。對(dui)(dui)額定(ding)(ding)(ding)功率大(da)于(yu)(yu)100W的(de)(de)(de)(de)元件(jian)(jian)為+5%~- 10%或10W,取(qu)兩者中(zhong)的(de)(de)(de)(de)較大(da)值。
3.泄(xie)露(lu)電(dian)(dian)(dian)流(liu)冷態(tai)泄(xie)露(lu)電(dian)(dian)(dian)流(liu)以及水(shui)壓和密封(feng)試(shi)驗(yan)后泄(xie)露(lu)電(dian)(dian)(dian)流(liu)應不(bu)超過0.5mA工作溫(wen)度(du)下(xia)的熱(re)態(tai)泄(xie)露(lu)電(dian)(dian)(dian)流(liu)應不(bu)超過公式中的計算值(zhi),但不(bu)超過5mA I=1/6 (tTX0.00001) I一 熱(re)態(tai)泄(xie)露(lu)電(dian)(dian)(dian)流(liu)mA t-發熱(re)長度(du)mm T-工作溫(wen)度(du)C多個元(yuan)件串聯到電(dian)(dian)(dian)源中時,應以這一組元(yuan)件為 整體進行泄(xie)露(lu)電(dian)(dian)(dian)流(liu)試(shi)驗(yan)。
4. 絕緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)出廠檢(jian)驗時冷態(tai)(tai)絕緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)應不小于(yu)50MQ密(mi)封試(shi)驗后,長期存放(fang)或(huo)者使用后的(de)絕緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)應不消與MQ工作溫(wen)度(du)下(xia)的(de)熱態(tai)(tai)絕緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)應不低于(yu)公式(shi)中的(de)計算值(zhi),但(dan)應不小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)(tai)絕緣(yuan)(yuan)(yuan)電(dian)阻(zu)(zu)MQ t一-發 熱長度(du)mmT一工作溫(wen)度(du)°C
5.絕緣耐(nai)壓(ya)強度元件應在規定(ding)的(de)試(shi)驗條件和試(shi)驗電壓(ya)下保持(chi)1min,而無閃絡和擊穿現象
6.經受通(tong)斷電(dian)的(de)能(neng)力(li)元件應能(neng)在規定的(de)試驗條件下經歷2000次通(tong)斷電(dian)試驗,而不(bu)發生損壞