防爆(bao)加(jia)熱(re)(re)(re)管(guan)(guan)(guan)是一種消耗電(dian)能(neng)轉換為(wei)熱(re)(re)(re)能(neng),來對需加(jia)熱(re)(re)(re)物(wu)料(liao)進行加(jia)熱(re)(re)(re)。防爆(bao)加(jia)熱(re)(re)(re)管(guan)(guan)(guan)是由外到里外殼(不(bu)繡(xiu)鋼(gang)/碳鋼(gang)/銅/鈦(tai)材(cai)等、發(fa)熱(re)(re)(re)絲(鎳鉻鉛合(he)金(jin))、填(tian)充物(wu)(氧化鎂,作用(yong)是導熱(re)(re)(re)、絕緣)、外殼(不(bu)繡(xiu)鋼(gang)、碳鋼(gang)、鈦(tai)材(cai)、銅 等)、陶瓷封頭(作用(yong):絕緣)、防爆(bao)盒(he)組成的(de)(de)(de)。加(jia)熱(re)(re)(re)管(guan)(guan)(guan)在(zai)工作中(zhong)(zhong)低溫流體介(jie)質(zhi)通(tong)過管(guan)(guan)(guan)道在(zai)壓(ya)力作用(yong)下(xia)進入其輸入口,沿著電(dian)加(jia)熱(re)(re)(re)容器內部(bu)特定換熱(re)(re)(re)流道,運用(yong)空(kong)(kong)氣電(dian)熱(re)(re)(re)管(guan)(guan)(guan)的(de)(de)(de)流體熱(re)(re)(re)力學原(yuan)理設計的(de)(de)(de)路(lu)徑,帶(dai)走空(kong)(kong)氣加(jia)熱(re)(re)(re)管(guan)(guan)(guan)中(zhong)(zhong)的(de)(de)(de)電(dian)熱(re)(re)(re)元件(jian)工作中(zhong)(zhong)所產生(sheng)的(de)(de)(de)高溫熱(re)(re)(re)能(neng)量,使空(kong)(kong)氣加(jia)熱(re)(re)(re)管(guan)(guan)(guan)被加(jia)熱(re)(re)(re)介(jie)質(zhi)溫度升高,加(jia)熱(re)(re)(re)管(guan)(guan)(guan)出口得到工藝要求的(de)(de)(de)高溫介(jie)質(zhi)。
產品(pin)特(te)點
1.升溫時間(jian)在試(shi)驗(yan)電壓(ya)下(xia),元件從環境溫度升至試(shi)驗(yan)溫度時間(jian)應不大于15min
2.額定(ding)(ding)(ding)功(gong)率偏(pian)差在充分發熱的(de)(de)(de)條件(jian)下(xia),元(yuan)件(jian)的(de)(de)(de)額定(ding)(ding)(ding)功(gong)率的(de)(de)(de)偏(pian)差應不超(chao)過下(xia)列規定(ding)(ding)(ding)的(de)(de)(de)范(fan)圍;對額定(ding)(ding)(ding)功(gong)率小于(yu)等于(yu)100W的(de)(de)(de)元(yuan)件(jian)為(wei):士10%。對額定(ding)(ding)(ding)功(gong)率大于(yu)100W的(de)(de)(de)元(yuan)件(jian)為(wei)+5%~- 10%或10W,取兩者中的(de)(de)(de)較大值。
3.泄(xie)(xie)露電(dian)(dian)流(liu)(liu)冷態(tai)泄(xie)(xie)露電(dian)(dian)流(liu)(liu)以及水壓和密封試驗(yan)后泄(xie)(xie)露電(dian)(dian)流(liu)(liu)應不超過(guo)0.5mA工作(zuo)溫(wen)度下(xia)的熱(re)態(tai)泄(xie)(xie)露電(dian)(dian)流(liu)(liu)應不超過(guo)公式中(zhong)的計算(suan)值,但不超過(guo)5mA I=1/6 (tTX0.00001) I一 熱(re)態(tai)泄(xie)(xie)露電(dian)(dian)流(liu)(liu)mA t-發熱(re)長度mm T-工作(zuo)溫(wen)度C多個(ge)元件串(chuan)聯到電(dian)(dian)源中(zhong)時(shi),應以這一組元件為 整體進行泄(xie)(xie)露電(dian)(dian)流(liu)(liu)試驗(yan)。
4. 絕(jue)(jue)緣(yuan)電(dian)阻出廠檢驗時(shi)冷態(tai)絕(jue)(jue)緣(yuan)電(dian)阻應不(bu)小于50MQ密封試(shi)驗后,長期存(cun)放或者(zhe)使用后的絕(jue)(jue)緣(yuan)電(dian)阻應不(bu)消與MQ工(gong)作(zuo)溫度下的熱(re)(re)態(tai)絕(jue)(jue)緣(yuan)電(dian)阻應不(bu)低(di)于公式中的計(ji)算值,但(dan)應不(bu)小于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)(re)態(tai)絕(jue)(jue)緣(yuan)電(dian)阻MQ t一-發 熱(re)(re)長度mmT一工(gong)作(zuo)溫度°C
5.絕緣(yuan)耐(nai)壓(ya)強度(du)元件應在(zai)規定的試(shi)驗(yan)條件和試(shi)驗(yan)電壓(ya)下保持(chi)1min,而無閃絡和擊穿現(xian)象
6.經受(shou)通斷電(dian)的(de)能力元件應(ying)能在(zai)規(gui)定的(de)試驗(yan)條(tiao)件下經歷(li)2000次通斷電(dian)試驗(yan),而不發(fa)生(sheng)損壞