防爆加(jia)熱(re)(re)(re)管(guan)(guan)是(shi)一種(zhong)消耗電能(neng)(neng)轉換(huan)為熱(re)(re)(re)能(neng)(neng),來(lai)對需(xu)加(jia)熱(re)(re)(re)物料進行加(jia)熱(re)(re)(re)。防爆加(jia)熱(re)(re)(re)管(guan)(guan)是(shi)由外(wai)到(dao)里(li)外(wai)殼(不繡鋼(gang)/碳鋼(gang)/銅/鈦(tai)材等(deng)、發熱(re)(re)(re)絲(si)(鎳(nie)鉻鉛合金(jin))、填充(chong)物(氧化(hua)鎂(mei),作(zuo)用是(shi)導熱(re)(re)(re)、絕緣)、外(wai)殼(不繡鋼(gang)、碳鋼(gang)、鈦(tai)材、銅 等(deng))、陶瓷封頭(tou)(作(zuo)用:絕緣)、防爆盒組成(cheng)的(de)(de)。加(jia)熱(re)(re)(re)管(guan)(guan)在工作(zuo)中(zhong)(zhong)低溫(wen)流體介質通(tong)過(guo)管(guan)(guan)道在壓力(li)(li)作(zuo)用下進入(ru)(ru)其輸入(ru)(ru)口(kou),沿(yan)著電加(jia)熱(re)(re)(re)容(rong)器(qi)內部特定換(huan)熱(re)(re)(re)流道,運用空氣電熱(re)(re)(re)管(guan)(guan)的(de)(de)流體熱(re)(re)(re)力(li)(li)學原(yuan)理設(she)計(ji)的(de)(de)路徑,帶走空氣加(jia)熱(re)(re)(re)管(guan)(guan)中(zhong)(zhong)的(de)(de)電熱(re)(re)(re)元件工作(zuo)中(zhong)(zhong)所產生(sheng)的(de)(de)高溫(wen)熱(re)(re)(re)能(neng)(neng)量,使(shi)空氣加(jia)熱(re)(re)(re)管(guan)(guan)被加(jia)熱(re)(re)(re)介質溫(wen)度升(sheng)高,加(jia)熱(re)(re)(re)管(guan)(guan)出口(kou)得到(dao)工藝要求的(de)(de)高溫(wen)介質。
產品特點(dian)
1.升溫時間(jian)(jian)在試驗電(dian)壓下,元件從(cong)環境溫度(du)升至(zhi)試驗溫度(du)時間(jian)(jian)應(ying)不大于15min
2.額定(ding)功率偏(pian)差在充分(fen)發熱的條件下,元(yuan)件的額定(ding)功率的偏(pian)差應不超過(guo)下列規(gui)定(ding)的范圍;對額定(ding)功率小于(yu)等(deng)于(yu)100W的元(yuan)件為:士10%。對額定(ding)功率大(da)(da)于(yu)100W的元(yuan)件為+5%~- 10%或10W,取(qu)兩者中的較大(da)(da)值。
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(mi)封試驗后(hou)泄(xie)露(lu)電(dian)(dian)流應不超(chao)(chao)過(guo)(guo)0.5mA工(gong)作溫度(du)下的(de)熱態泄(xie)露(lu)電(dian)(dian)流應不超(chao)(chao)過(guo)(guo)公(gong)式中(zhong)的(de)計(ji)算值,但不超(chao)(chao)過(guo)(guo)5mA I=1/6 (tTX0.00001) I一 熱態泄(xie)露(lu)電(dian)(dian)流mA t-發熱長度(du)mm T-工(gong)作溫度(du)C多個(ge)元(yuan)件串聯到電(dian)(dian)源中(zhong)時,應以這一組元(yuan)件為 整體進行泄(xie)露(lu)電(dian)(dian)流試驗。
4. 絕(jue)緣電(dian)阻(zu)出廠(chang)檢驗時(shi)冷態(tai)絕(jue)緣電(dian)阻(zu)應(ying)不小于50MQ密封試驗后,長(chang)期(qi)存放或者使用后的絕(jue)緣電(dian)阻(zu)應(ying)不消與MQ工作溫度(du)(du)下的熱(re)(re)態(tai)絕(jue)緣電(dian)阻(zu)應(ying)不低于公式中的計(ji)算值,但應(ying)不小于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)(re)態(tai)絕(jue)緣電(dian)阻(zu)MQ t一(yi)-發 熱(re)(re)長(chang)度(du)(du)mmT一(yi)工作溫度(du)(du)°C
5.絕緣耐壓強度元件應(ying)在規(gui)定的試(shi)驗條件和試(shi)驗電壓下(xia)保持1min,而無閃絡和擊穿現(xian)象
6.經受通(tong)斷電的能(neng)(neng)力元件(jian)應能(neng)(neng)在規定(ding)的試驗條件(jian)下(xia)經歷2000次通(tong)斷電試驗,而不發生損壞