防(fang)(fang)爆(bao)加(jia)(jia)熱(re)(re)管(guan)(guan)是一種消(xiao)耗(hao)電(dian)(dian)(dian)能(neng)(neng)轉換為熱(re)(re)能(neng)(neng),來對需加(jia)(jia)熱(re)(re)物料(liao)進行加(jia)(jia)熱(re)(re)。防(fang)(fang)爆(bao)加(jia)(jia)熱(re)(re)管(guan)(guan)是由(you)外到里外殼(ke)(不(bu)繡鋼/碳(tan)鋼/銅(tong)/鈦(tai)材(cai)(cai)等、發(fa)熱(re)(re)絲(si)(鎳鉻鉛合金)、填充物(氧化鎂,作用是導(dao)熱(re)(re)、絕緣(yuan))、外殼(ke)(不(bu)繡鋼、碳(tan)鋼、鈦(tai)材(cai)(cai)、銅(tong) 等)、陶瓷(ci)封頭(作用:絕緣(yuan))、防(fang)(fang)爆(bao)盒組(zu)成的(de)。加(jia)(jia)熱(re)(re)管(guan)(guan)在工(gong)作中(zhong)低溫(wen)流體介質(zhi)通(tong)過管(guan)(guan)道在壓力(li)作用下(xia)進入其輸(shu)入口,沿著電(dian)(dian)(dian)加(jia)(jia)熱(re)(re)容器內部特定換熱(re)(re)流道,運用空氣電(dian)(dian)(dian)熱(re)(re)管(guan)(guan)的(de)流體熱(re)(re)力(li)學原理設計的(de)路徑,帶走空氣加(jia)(jia)熱(re)(re)管(guan)(guan)中(zhong)的(de)電(dian)(dian)(dian)熱(re)(re)元(yuan)件工(gong)作中(zhong)所產生(sheng)的(de)高溫(wen)熱(re)(re)能(neng)(neng)量,使(shi)空氣加(jia)(jia)熱(re)(re)管(guan)(guan)被(bei)加(jia)(jia)熱(re)(re)介質(zhi)溫(wen)度升高,加(jia)(jia)熱(re)(re)管(guan)(guan)出口得到工(gong)藝要(yao)求(qiu)的(de)高溫(wen)介質(zhi)。
產品特點(dian)
1.升(sheng)溫(wen)時間在試驗電壓下(xia),元(yuan)件從環境溫(wen)度升(sheng)至試驗溫(wen)度時間應不大于15min
2.額(e)定(ding)(ding)功(gong)(gong)率偏差(cha)(cha)在充分發熱的(de)條件下,元(yuan)(yuan)件的(de)額(e)定(ding)(ding)功(gong)(gong)率的(de)偏差(cha)(cha)應(ying)不超過(guo)下列(lie)規定(ding)(ding)的(de)范圍(wei);對額(e)定(ding)(ding)功(gong)(gong)率小于等于100W的(de)元(yuan)(yuan)件為(wei):士(shi)10%。對額(e)定(ding)(ding)功(gong)(gong)率大于100W的(de)元(yuan)(yuan)件為(wei)+5%~- 10%或10W,取兩者中(zhong)的(de)較大值。
3.泄(xie)(xie)露(lu)電流(liu)冷態泄(xie)(xie)露(lu)電流(liu)以及水壓和密封試驗(yan)后泄(xie)(xie)露(lu)電流(liu)應(ying)(ying)不超(chao)(chao)過0.5mA工(gong)作(zuo)溫(wen)度(du)下的熱(re)態泄(xie)(xie)露(lu)電流(liu)應(ying)(ying)不超(chao)(chao)過公(gong)式中的計算值(zhi),但不超(chao)(chao)過5mA I=1/6 (tTX0.00001) I一(yi) 熱(re)態泄(xie)(xie)露(lu)電流(liu)mA t-發熱(re)長(chang)度(du)mm T-工(gong)作(zuo)溫(wen)度(du)C多個元件串聯(lian)到電源(yuan)中時,應(ying)(ying)以這一(yi)組元件為 整體進行泄(xie)(xie)露(lu)電流(liu)試驗(yan)。
4. 絕(jue)緣(yuan)電(dian)阻出(chu)廠檢驗時冷態(tai)絕(jue)緣(yuan)電(dian)阻應(ying)不(bu)(bu)小于(yu)50MQ密封試驗后,長(chang)期存放或者使用后的絕(jue)緣(yuan)電(dian)阻應(ying)不(bu)(bu)消與MQ工(gong)作溫度下的熱(re)態(tai)絕(jue)緣(yuan)電(dian)阻應(ying)不(bu)(bu)低于(yu)公(gong)式中(zhong)的計算值,但(dan)應(ying)不(bu)(bu)小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態(tai)絕(jue)緣(yuan)電(dian)阻MQ t一(yi)-發 熱(re)長(chang)度mmT一(yi)工(gong)作溫度°C
5.絕(jue)緣耐壓強度元(yuan)件應在規定的試驗(yan)條件和試驗(yan)電壓下保持(chi)1min,而無(wu)閃絡和擊(ji)穿現(xian)象(xiang)
6.經(jing)受通斷電的能(neng)力元件(jian)應能(neng)在規定的試(shi)驗(yan)條件(jian)下經(jing)歷(li)2000次通斷電試(shi)驗(yan),而不發生(sheng)損(sun)壞