防(fang)爆(bao)加(jia)熱(re)(re)(re)管(guan)(guan)(guan)是(shi)一種消耗電能(neng)轉換為(wei)熱(re)(re)(re)能(neng),來對需加(jia)熱(re)(re)(re)物料進行加(jia)熱(re)(re)(re)。防(fang)爆(bao)加(jia)熱(re)(re)(re)管(guan)(guan)(guan)是(shi)由外到里外殼(ke)(不繡鋼(gang)/碳(tan)鋼(gang)/銅/鈦材等(deng)、發熱(re)(re)(re)絲(鎳鉻鉛合金)、填充物(氧化(hua)鎂,作(zuo)(zuo)(zuo)用是(shi)導熱(re)(re)(re)、絕緣)、外殼(ke)(不繡鋼(gang)、碳(tan)鋼(gang)、鈦材、銅 等(deng))、陶瓷封頭(tou)(作(zuo)(zuo)(zuo)用:絕緣)、防(fang)爆(bao)盒(he)組成的。加(jia)熱(re)(re)(re)管(guan)(guan)(guan)在工作(zuo)(zuo)(zuo)中(zhong)低溫(wen)(wen)流體介質通過管(guan)(guan)(guan)道(dao)在壓力作(zuo)(zuo)(zuo)用下進入(ru)其輸入(ru)口,沿著電加(jia)熱(re)(re)(re)容器內部特定換熱(re)(re)(re)流道(dao),運用空氣(qi)電熱(re)(re)(re)管(guan)(guan)(guan)的流體熱(re)(re)(re)力學原(yuan)理(li)設計(ji)的路(lu)徑,帶走空氣(qi)加(jia)熱(re)(re)(re)管(guan)(guan)(guan)中(zhong)的電熱(re)(re)(re)元(yuan)件工作(zuo)(zuo)(zuo)中(zhong)所產(chan)生的高(gao)溫(wen)(wen)熱(re)(re)(re)能(neng)量,使空氣(qi)加(jia)熱(re)(re)(re)管(guan)(guan)(guan)被加(jia)熱(re)(re)(re)介質溫(wen)(wen)度升高(gao),加(jia)熱(re)(re)(re)管(guan)(guan)(guan)出口得到工藝要求的高(gao)溫(wen)(wen)介質。
產品特點(dian)
1.升溫時(shi)間(jian)在試驗(yan)電(dian)壓下,元(yuan)件從環(huan)境溫度升至試驗(yan)溫度時(shi)間(jian)應不大(da)于15min
2.額(e)(e)定(ding)(ding)功(gong)率(lv)偏(pian)差在充分發(fa)熱的(de)條(tiao)件(jian)下,元(yuan)件(jian)的(de)額(e)(e)定(ding)(ding)功(gong)率(lv)的(de)偏(pian)差應不超過下列規(gui)定(ding)(ding)的(de)范(fan)圍;對(dui)額(e)(e)定(ding)(ding)功(gong)率(lv)小于等(deng)于100W的(de)元(yuan)件(jian)為(wei):士10%。對(dui)額(e)(e)定(ding)(ding)功(gong)率(lv)大(da)(da)于100W的(de)元(yuan)件(jian)為(wei)+5%~- 10%或10W,取兩者中的(de)較大(da)(da)值。
3.泄(xie)(xie)露(lu)(lu)電(dian)(dian)流(liu)冷態泄(xie)(xie)露(lu)(lu)電(dian)(dian)流(liu)以及水壓和密封試驗后(hou)泄(xie)(xie)露(lu)(lu)電(dian)(dian)流(liu)應(ying)不(bu)超過(guo)0.5mA工作(zuo)溫度下(xia)的熱態泄(xie)(xie)露(lu)(lu)電(dian)(dian)流(liu)應(ying)不(bu)超過(guo)公式中的計算值,但不(bu)超過(guo)5mA I=1/6 (tTX0.00001) I一 熱態泄(xie)(xie)露(lu)(lu)電(dian)(dian)流(liu)mA t-發熱長度mm T-工作(zuo)溫度C多個元(yuan)件串聯到電(dian)(dian)源中時,應(ying)以這(zhe)一組元(yuan)件為 整體進(jin)行(xing)泄(xie)(xie)露(lu)(lu)電(dian)(dian)流(liu)試驗。
4. 絕緣(yuan)電(dian)(dian)阻出廠(chang)檢驗時冷(leng)態(tai)絕緣(yuan)電(dian)(dian)阻應不(bu)(bu)小(xiao)于50MQ密封(feng)試驗后,長期存放或者使用后的絕緣(yuan)電(dian)(dian)阻應不(bu)(bu)消與MQ工(gong)作(zuo)溫度下的熱(re)態(tai)絕緣(yuan)電(dian)(dian)阻應不(bu)(bu)低于公式中的計(ji)算值,但應不(bu)(bu)小(xiao)于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態(tai)絕緣(yuan)電(dian)(dian)阻MQ t一(yi)-發(fa) 熱(re)長度mmT一(yi)工(gong)作(zuo)溫度°C
5.絕緣耐(nai)壓強(qiang)度元件(jian)應在規定的試驗條件(jian)和(he)試驗電壓下保持1min,而(er)無閃絡和(he)擊穿現(xian)象
6.經(jing)受通(tong)斷電(dian)的能(neng)力元件應能(neng)在規定(ding)的試驗條(tiao)件下經(jing)歷2000次通(tong)斷電(dian)試驗,而不發生損壞(huai)