防(fang)爆(bao)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)管(guan)(guan)(guan)(guan)是(shi)一(yi)種消(xiao)耗電(dian)能(neng)轉換(huan)為熱(re)(re)能(neng),來對需加(jia)(jia)(jia)(jia)(jia)熱(re)(re)物料進(jin)行加(jia)(jia)(jia)(jia)(jia)熱(re)(re)。防(fang)爆(bao)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)管(guan)(guan)(guan)(guan)是(shi)由外到里(li)外殼(不(bu)繡鋼(gang)(gang)(gang)/碳鋼(gang)(gang)(gang)/銅/鈦(tai)材(cai)等、發熱(re)(re)絲(鎳鉻鉛(qian)合(he)金)、填(tian)充物(氧化鎂,作用是(shi)導熱(re)(re)、絕(jue)緣(yuan)(yuan))、外殼(不(bu)繡鋼(gang)(gang)(gang)、碳鋼(gang)(gang)(gang)、鈦(tai)材(cai)、銅 等)、陶瓷(ci)封(feng)頭(作用:絕(jue)緣(yuan)(yuan))、防(fang)爆(bao)盒組成(cheng)的(de)(de)。加(jia)(jia)(jia)(jia)(jia)熱(re)(re)管(guan)(guan)(guan)(guan)在工作中低(di)溫流體介質通過管(guan)(guan)(guan)(guan)道(dao)在壓力(li)作用下進(jin)入其輸入口(kou),沿著電(dian)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)容器內部特定換(huan)熱(re)(re)流道(dao),運(yun)用空氣(qi)電(dian)熱(re)(re)管(guan)(guan)(guan)(guan)的(de)(de)流體熱(re)(re)力(li)學原理設計的(de)(de)路徑,帶(dai)走(zou)空氣(qi)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)管(guan)(guan)(guan)(guan)中的(de)(de)電(dian)熱(re)(re)元件工作中所產(chan)生的(de)(de)高(gao)(gao)溫熱(re)(re)能(neng)量,使(shi)空氣(qi)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)管(guan)(guan)(guan)(guan)被加(jia)(jia)(jia)(jia)(jia)熱(re)(re)介質溫度升(sheng)高(gao)(gao),加(jia)(jia)(jia)(jia)(jia)熱(re)(re)管(guan)(guan)(guan)(guan)出口(kou)得到工藝要求(qiu)的(de)(de)高(gao)(gao)溫介質。
產品特點
1.升溫(wen)時(shi)間(jian)在試驗電壓下,元件(jian)從環境(jing)溫(wen)度升至試驗溫(wen)度時(shi)間(jian)應不大于15min
2.額(e)定(ding)(ding)功(gong)率(lv)(lv)偏差在充分發(fa)熱(re)的條件(jian)下(xia),元件(jian)的額(e)定(ding)(ding)功(gong)率(lv)(lv)的偏差應(ying)不超過下(xia)列規定(ding)(ding)的范圍(wei);對(dui)額(e)定(ding)(ding)功(gong)率(lv)(lv)小于(yu)等于(yu)100W的元件(jian)為:士10%。對(dui)額(e)定(ding)(ding)功(gong)率(lv)(lv)大于(yu)100W的元件(jian)為+5%~- 10%或10W,取兩者(zhe)中的較大值。
3.泄(xie)露(lu)(lu)電(dian)(dian)流(liu)(liu)冷態泄(xie)露(lu)(lu)電(dian)(dian)流(liu)(liu)以(yi)及(ji)水壓(ya)和密封試驗后(hou)泄(xie)露(lu)(lu)電(dian)(dian)流(liu)(liu)應不(bu)超過0.5mA工作(zuo)溫度(du)下的熱(re)態泄(xie)露(lu)(lu)電(dian)(dian)流(liu)(liu)應不(bu)超過公式中的計算(suan)值,但(dan)不(bu)超過5mA I=1/6 (tTX0.00001) I一 熱(re)態泄(xie)露(lu)(lu)電(dian)(dian)流(liu)(liu)mA t-發熱(re)長度(du)mm T-工作(zuo)溫度(du)C多(duo)個(ge)元(yuan)件串聯(lian)到電(dian)(dian)源中時,應以(yi)這一組(zu)元(yuan)件為(wei) 整體(ti)進(jin)行泄(xie)露(lu)(lu)電(dian)(dian)流(liu)(liu)試驗。
4. 絕(jue)(jue)(jue)(jue)緣電(dian)阻(zu)出廠檢驗時冷態(tai)絕(jue)(jue)(jue)(jue)緣電(dian)阻(zu)應不小于50MQ密封試(shi)驗后,長期存放(fang)或者使(shi)用后的絕(jue)(jue)(jue)(jue)緣電(dian)阻(zu)應不消與MQ工(gong)作溫(wen)度(du)下的熱(re)態(tai)絕(jue)(jue)(jue)(jue)緣電(dian)阻(zu)應不低于公式中的計(ji)算值,但應不小于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態(tai)絕(jue)(jue)(jue)(jue)緣電(dian)阻(zu)MQ t一(yi)-發(fa) 熱(re)長度(du)mmT一(yi)工(gong)作溫(wen)度(du)°C
5.絕緣耐壓強度元件(jian)應在規定(ding)的試(shi)驗條件(jian)和(he)試(shi)驗電壓下保持1min,而無閃絡和(he)擊穿現象
6.經受通斷電的能力元(yuan)件(jian)應(ying)能在規定的試(shi)驗條件(jian)下經歷2000次通斷電試(shi)驗,而不發生損壞