防(fang)爆加(jia)熱(re)(re)(re)管(guan)是一(yi)種消耗(hao)電(dian)(dian)能(neng)轉換為熱(re)(re)(re)能(neng),來對需加(jia)熱(re)(re)(re)物料進(jin)(jin)行(xing)加(jia)熱(re)(re)(re)。防(fang)爆加(jia)熱(re)(re)(re)管(guan)是由外(wai)(wai)到里外(wai)(wai)殼(不繡鋼(gang)/碳(tan)鋼(gang)/銅/鈦(tai)材等(deng)、發熱(re)(re)(re)絲(鎳(nie)鉻(ge)鉛合金)、填充物(氧化(hua)鎂(mei),作(zuo)用是導(dao)熱(re)(re)(re)、絕緣)、外(wai)(wai)殼(不繡鋼(gang)、碳(tan)鋼(gang)、鈦(tai)材、銅 等(deng))、陶瓷封頭(作(zuo)用:絕緣)、防(fang)爆盒組成的。加(jia)熱(re)(re)(re)管(guan)在工(gong)作(zuo)中(zhong)低(di)溫流體介(jie)(jie)質通過管(guan)道(dao)在壓力作(zuo)用下(xia)進(jin)(jin)入其(qi)輸入口(kou),沿著電(dian)(dian)加(jia)熱(re)(re)(re)容器內(nei)部特(te)定(ding)換熱(re)(re)(re)流道(dao),運用空氣電(dian)(dian)熱(re)(re)(re)管(guan)的流體熱(re)(re)(re)力學原(yuan)理設計的路徑,帶走(zou)空氣加(jia)熱(re)(re)(re)管(guan)中(zhong)的電(dian)(dian)熱(re)(re)(re)元件工(gong)作(zuo)中(zhong)所(suo)產生的高溫熱(re)(re)(re)能(neng)量,使空氣加(jia)熱(re)(re)(re)管(guan)被加(jia)熱(re)(re)(re)介(jie)(jie)質溫度升高,加(jia)熱(re)(re)(re)管(guan)出(chu)口(kou)得(de)到工(gong)藝(yi)要(yao)求(qiu)的高溫介(jie)(jie)質。
產品(pin)特(te)點
1.升溫(wen)時間(jian)在試驗電(dian)壓下,元件從環境(jing)溫(wen)度(du)升至試驗溫(wen)度(du)時間(jian)應不(bu)大于(yu)15min
2.額定功率(lv)偏差在(zai)充分發熱(re)的(de)條件(jian)下(xia)(xia),元(yuan)件(jian)的(de)額定功率(lv)的(de)偏差應不超(chao)過下(xia)(xia)列規定的(de)范圍;對額定功率(lv)小于(yu)等(deng)于(yu)100W的(de)元(yuan)件(jian)為:士10%。對額定功率(lv)大于(yu)100W的(de)元(yuan)件(jian)為+5%~- 10%或10W,取(qu)兩者中的(de)較(jiao)大值(zhi)。
3.泄露(lu)電(dian)流冷(leng)態(tai)(tai)泄露(lu)電(dian)流以及水壓和(he)密封試驗后泄露(lu)電(dian)流應不超(chao)過(guo)0.5mA工作溫度下的(de)熱態(tai)(tai)泄露(lu)電(dian)流應不超(chao)過(guo)公(gong)式中(zhong)的(de)計算值(zhi),但不超(chao)過(guo)5mA I=1/6 (tTX0.00001) I一 熱態(tai)(tai)泄露(lu)電(dian)流mA t-發熱長度mm T-工作溫度C多個元件(jian)串聯(lian)到電(dian)源(yuan)中(zhong)時,應以這一組元件(jian)為 整體(ti)進行泄露(lu)電(dian)流試驗。
4. 絕(jue)(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)阻出(chu)廠檢驗時(shi)冷(leng)態(tai)絕(jue)(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)阻應不(bu)(bu)(bu)小于(yu)50MQ密封試驗后(hou),長期存放或(huo)者(zhe)使用(yong)后(hou)的絕(jue)(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)阻應不(bu)(bu)(bu)消與MQ工(gong)作溫(wen)度下(xia)的熱態(tai)絕(jue)(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)阻應不(bu)(bu)(bu)低于(yu)公式中的計算值(zhi),但應不(bu)(bu)(bu)小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)絕(jue)(jue)緣(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)阻MQ t一-發 熱長度mmT一工(gong)作溫(wen)度°C
5.絕緣(yuan)耐(nai)壓強度元件(jian)應(ying)在規定的試(shi)驗(yan)條件(jian)和試(shi)驗(yan)電壓下保持1min,而無閃絡(luo)和擊穿現(xian)象(xiang)
6.經受通(tong)斷(duan)(duan)電(dian)的能力元件(jian)應(ying)能在(zai)規定的試驗(yan)條(tiao)件(jian)下經歷2000次通(tong)斷(duan)(duan)電(dian)試驗(yan),而不發生損(sun)壞