防爆加(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)是(shi)一種消耗電能(neng)(neng)轉(zhuan)換(huan)為熱(re)(re)(re)能(neng)(neng),來對需(xu)加(jia)(jia)熱(re)(re)(re)物料(liao)進行加(jia)(jia)熱(re)(re)(re)。防爆加(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)是(shi)由外(wai)到里外(wai)殼(ke)(不(bu)繡(xiu)鋼(gang)/碳鋼(gang)/銅/鈦材等、發熱(re)(re)(re)絲(鎳(nie)鉻鉛(qian)合金)、填充物(氧(yang)化鎂,作用(yong)是(shi)導熱(re)(re)(re)、絕(jue)緣(yuan))、外(wai)殼(ke)(不(bu)繡(xiu)鋼(gang)、碳鋼(gang)、鈦材、銅 等)、陶瓷封頭(作用(yong):絕(jue)緣(yuan))、防爆盒組成的(de)。加(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)在工(gong)作中(zhong)低溫流體(ti)介質(zhi)通過管(guan)(guan)(guan)道在壓力(li)作用(yong)下(xia)進入其輸入口,沿著(zhu)電加(jia)(jia)熱(re)(re)(re)容器(qi)內(nei)部特定換(huan)熱(re)(re)(re)流道,運用(yong)空氣(qi)(qi)(qi)電熱(re)(re)(re)管(guan)(guan)(guan)的(de)流體(ti)熱(re)(re)(re)力(li)學原理設計的(de)路徑,帶走空氣(qi)(qi)(qi)加(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)中(zhong)的(de)電熱(re)(re)(re)元件工(gong)作中(zhong)所產生的(de)高(gao)溫熱(re)(re)(re)能(neng)(neng)量,使空氣(qi)(qi)(qi)加(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)被加(jia)(jia)熱(re)(re)(re)介質(zhi)溫度升高(gao),加(jia)(jia)熱(re)(re)(re)管(guan)(guan)(guan)出口得到工(gong)藝要求(qiu)的(de)高(gao)溫介質(zhi)。
產品(pin)特(te)點
1.升溫(wen)時間(jian)在(zai)試(shi)驗電(dian)壓(ya)下,元件從環境溫(wen)度升至試(shi)驗溫(wen)度時間(jian)應(ying)不(bu)大于15min
2.額(e)定功(gong)率偏差在充分發(fa)熱的(de)條件下,元件的(de)額(e)定功(gong)率的(de)偏差應不超過下列規(gui)定的(de)范圍;對(dui)額(e)定功(gong)率小于(yu)等于(yu)100W的(de)元件為:士10%。對(dui)額(e)定功(gong)率大(da)于(yu)100W的(de)元件為+5%~- 10%或(huo)10W,取兩者中的(de)較大(da)值。
3.泄(xie)(xie)露電(dian)(dian)(dian)流冷態泄(xie)(xie)露電(dian)(dian)(dian)流以(yi)及水(shui)壓和密封試驗(yan)后(hou)泄(xie)(xie)露電(dian)(dian)(dian)流應不(bu)超過0.5mA工作(zuo)溫(wen)度(du)下的(de)熱(re)態泄(xie)(xie)露電(dian)(dian)(dian)流應不(bu)超過公式中的(de)計算值,但不(bu)超過5mA I=1/6 (tTX0.00001) I一(yi)(yi) 熱(re)態泄(xie)(xie)露電(dian)(dian)(dian)流mA t-發(fa)熱(re)長度(du)mm T-工作(zuo)溫(wen)度(du)C多個元(yuan)件(jian)串聯到(dao)電(dian)(dian)(dian)源中時,應以(yi)這(zhe)一(yi)(yi)組元(yuan)件(jian)為 整體進行(xing)泄(xie)(xie)露電(dian)(dian)(dian)流試驗(yan)。
4. 絕(jue)(jue)緣(yuan)電(dian)(dian)(dian)阻(zu)出廠(chang)檢(jian)驗時冷態(tai)絕(jue)(jue)緣(yuan)電(dian)(dian)(dian)阻(zu)應(ying)(ying)不(bu)小于50MQ密封試驗后,長期存放或(huo)者(zhe)使用后的(de)絕(jue)(jue)緣(yuan)電(dian)(dian)(dian)阻(zu)應(ying)(ying)不(bu)消與(yu)MQ工(gong)作溫(wen)度(du)(du)下(xia)的(de)熱態(tai)絕(jue)(jue)緣(yuan)電(dian)(dian)(dian)阻(zu)應(ying)(ying)不(bu)低(di)于公式中的(de)計算(suan)值,但應(ying)(ying)不(bu)小于1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)絕(jue)(jue)緣(yuan)電(dian)(dian)(dian)阻(zu)MQ t一-發 熱長度(du)(du)mmT一工(gong)作溫(wen)度(du)(du)°C
5.絕緣耐壓強度(du)元件應在規定的試驗條(tiao)件和試驗電(dian)壓下保持1min,而無閃絡和擊穿現象(xiang)
6.經(jing)受通斷(duan)電的(de)能(neng)力元件應(ying)能(neng)在規(gui)定的(de)試驗(yan)條件下經(jing)歷2000次通斷(duan)電試驗(yan),而不發生損壞