防爆(bao)加(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)是(shi)一種消耗電(dian)能(neng)轉換(huan)為熱(re)(re)(re)能(neng),來對需加(jia)(jia)(jia)熱(re)(re)(re)物料(liao)進行加(jia)(jia)(jia)熱(re)(re)(re)。防爆(bao)加(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)是(shi)由外(wai)(wai)到(dao)里(li)外(wai)(wai)殼(不(bu)繡(xiu)鋼/碳(tan)鋼/銅/鈦材等、發熱(re)(re)(re)絲(si)(鎳鉻鉛合金)、填充物(氧化鎂,作(zuo)用(yong)是(shi)導熱(re)(re)(re)、絕(jue)緣(yuan))、外(wai)(wai)殼(不(bu)繡(xiu)鋼、碳(tan)鋼、鈦材、銅 等)、陶(tao)瓷封頭(作(zuo)用(yong):絕(jue)緣(yuan))、防爆(bao)盒組成的(de)。加(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)在(zai)工作(zuo)中低溫流體介質(zhi)通(tong)過管(guan)(guan)(guan)道在(zai)壓(ya)力作(zuo)用(yong)下進入其(qi)輸入口(kou)(kou),沿著電(dian)加(jia)(jia)(jia)熱(re)(re)(re)容器內部(bu)特定換(huan)熱(re)(re)(re)流道,運用(yong)空氣(qi)電(dian)熱(re)(re)(re)管(guan)(guan)(guan)的(de)流體熱(re)(re)(re)力學原理設計(ji)的(de)路徑,帶(dai)走(zou)空氣(qi)加(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)中的(de)電(dian)熱(re)(re)(re)元件(jian)工作(zuo)中所產生的(de)高溫熱(re)(re)(re)能(neng)量,使(shi)空氣(qi)加(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)被加(jia)(jia)(jia)熱(re)(re)(re)介質(zhi)溫度(du)升高,加(jia)(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)出口(kou)(kou)得到(dao)工藝要求的(de)高溫介質(zhi)。
產品特點
1.升溫時(shi)間在(zai)試驗電壓下,元(yuan)件從環境溫度升至(zhi)試驗溫度時(shi)間應不大于15min
2.額(e)(e)定功(gong)率(lv)偏差在充分發熱的(de)條件下,元(yuan)件的(de)額(e)(e)定功(gong)率(lv)的(de)偏差應(ying)不(bu)超(chao)過下列規定的(de)范圍;對額(e)(e)定功(gong)率(lv)小于等于100W的(de)元(yuan)件為:士10%。對額(e)(e)定功(gong)率(lv)大于100W的(de)元(yuan)件為+5%~- 10%或10W,取(qu)兩(liang)者中的(de)較大值(zhi)。
3.泄(xie)露(lu)電(dian)(dian)流冷態泄(xie)露(lu)電(dian)(dian)流以及水壓和密封試驗(yan)后泄(xie)露(lu)電(dian)(dian)流應不(bu)超過0.5mA工(gong)作(zuo)(zuo)溫度下的熱(re)(re)態泄(xie)露(lu)電(dian)(dian)流應不(bu)超過公(gong)式中(zhong)的計算值,但不(bu)超過5mA I=1/6 (tTX0.00001) I一 熱(re)(re)態泄(xie)露(lu)電(dian)(dian)流mA t-發熱(re)(re)長度mm T-工(gong)作(zuo)(zuo)溫度C多個元(yuan)件串聯(lian)到(dao)電(dian)(dian)源中(zhong)時,應以這一組元(yuan)件為 整體進(jin)行泄(xie)露(lu)電(dian)(dian)流試驗(yan)。
4. 絕(jue)(jue)(jue)緣電阻出(chu)廠檢(jian)驗(yan)時(shi)冷態(tai)絕(jue)(jue)(jue)緣電阻應不小于(yu)50MQ密封試驗(yan)后,長期存放或(huo)者使用(yong)后的絕(jue)(jue)(jue)緣電阻應不消與(yu)MQ工作溫(wen)度(du)下的熱(re)態(tai)絕(jue)(jue)(jue)緣電阻應不低于(yu)公(gong)式中(zhong)的計算值(zhi),但(dan)應不小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態(tai)絕(jue)(jue)(jue)緣電阻MQ t一(yi)-發 熱(re)長度(du)mmT一(yi)工作溫(wen)度(du)°C
5.絕緣耐壓強度元(yuan)件應在規定的試(shi)驗(yan)條件和試(shi)驗(yan)電壓下(xia)保(bao)持1min,而無(wu)閃絡和擊穿現象
6.經(jing)受通斷電(dian)的能(neng)力元件應能(neng)在規(gui)定的試驗(yan)條件下經(jing)歷2000次(ci)通斷電(dian)試驗(yan),而不(bu)發(fa)生損壞