防(fang)爆(bao)加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)是(shi)(shi)一種消耗電(dian)能轉換為熱(re)(re)(re)(re)能，來(lai)對需(xu)加(jia)(jia)(jia)熱(re)(re)(re)(re)物料進行加(jia)(jia)(jia)熱(re)(re)(re)(re)。防(fang)爆(bao)加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)是(shi)(shi)由(you)外到(dao)(dao)里外殼（不繡鋼/碳(tan)鋼/銅(tong)/鈦(tai)材(cai)等(deng)、發熱(re)(re)(re)(re)絲（鎳鉻鉛(qian)合金(jin)）、填充物（氧化鎂，作(zuo)用是(shi)(shi)導熱(re)(re)(re)(re)、絕(jue)緣）、外殼（不繡鋼、碳(tan)鋼、鈦(tai)材(cai)、銅(tong)  等(deng)）、陶瓷(ci)封頭（作(zuo)用：絕(jue)緣）、防(fang)爆(bao)盒組成的。加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)在工(gong)作(zuo)中(zhong)(zhong)低溫流(liu)(liu)體(ti)介質通過管(guan)(guan)(guan)(guan)道在壓力作(zuo)用下(xia)進入其輸(shu)入口，沿著(zhu)電(dian)加(jia)(jia)(jia)熱(re)(re)(re)(re)容器內部(bu)特定換熱(re)(re)(re)(re)流(liu)(liu)道，運用空(kong)氣(qi)(qi)電(dian)熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)的流(liu)(liu)體(ti)熱(re)(re)(re)(re)力學原(yuan)理(li)設計的路徑，帶走空(kong)氣(qi)(qi)加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)中(zhong)(zhong)的電(dian)熱(re)(re)(re)(re)元件工(gong)作(zuo)中(zhong)(zhong)所產生的高溫熱(re)(re)(re)(re)能量，使空(kong)氣(qi)(qi)加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)被(bei)加(jia)(jia)(jia)熱(re)(re)(re)(re)介質溫度升高，加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)(guan)(guan)出口得(de)到(dao)(dao)工(gong)藝要(yao)求的高溫介質。

產品特點

1.升溫時(shi)間(jian)在(zai)試驗電壓下，元件從環境溫度(du)升至試驗溫度(du)時(shi)間(jian)應不大(da)于15min

2.額(e)定(ding)(ding)功(gong)率偏差(cha)在充分(fen)發熱的條(tiao)件(jian)(jian)下，元(yuan)(yuan)(yuan)件(jian)(jian)的額(e)定(ding)(ding)功(gong)率的偏差(cha)應不超過(guo)下列規定(ding)(ding)的范圍;對額(e)定(ding)(ding)功(gong)率小于(yu)(yu)(yu)等于(yu)(yu)(yu)100W的元(yuan)(yuan)(yuan)件(jian)(jian)為:士10%。對額(e)定(ding)(ding)功(gong)率大于(yu)(yu)(yu)100W的元(yuan)(yuan)(yuan)件(jian)(jian)為+5%~- 10%或10W,取兩者中的較大值。

3.泄(xie)露電(dian)流(liu)(liu)冷態(tai)泄(xie)露電(dian)流(liu)(liu)以(yi)及水(shui)壓和密封(feng)試驗后泄(xie)露電(dian)流(liu)(liu)應不超(chao)(chao)過0.5mA工(gong)作溫度下的(de)熱(re)態(tai)泄(xie)露電(dian)流(liu)(liu)應不超(chao)(chao)過公式中的(de)計算值，但(dan)不超(chao)(chao)過5mA I=1/6 (tTX0.00001) I一(yi) 熱(re)態(tai)泄(xie)露電(dian)流(liu)(liu)mA t-發(fa)熱(re)長度mm T-工(gong)作溫度C多個元件串(chuan)聯到電(dian)源中時，應以(yi)這一(yi)組元件為 整體進行泄(xie)露電(dian)流(liu)(liu)試驗。

4. 絕緣(yuan)(yuan)電(dian)阻(zu)出廠檢(jian)驗時冷態(tai)絕緣(yuan)(yuan)電(dian)阻(zu)應(ying)不小(xiao)于50MQ密封試驗后，長期(qi)存放或者使用后的絕緣(yuan)(yuan)電(dian)阻(zu)應(ying)不消與MQ工作溫(wen)(wen)度(du)下的熱態(tai)絕緣(yuan)(yuan)電(dian)阻(zu)應(ying)不低于公(gong)式中的計算值(zhi)，但應(ying)不小(xiao)于1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)絕緣(yuan)(yuan)電(dian)阻(zu)MQ t一-發 熱長度(du)mmT一工作溫(wen)(wen)度(du)°C

5.絕(jue)緣耐(nai)壓強度元件應在規定(ding)的(de)試驗(yan)條件和(he)試驗(yan)電壓下保持(chi)1min,而無閃絡和(he)擊穿現(xian)象

6.經(jing)(jing)受通(tong)斷(duan)電的能力元件(jian)應能在規定的試(shi)驗條件(jian)下經(jing)(jing)歷2000次通(tong)斷(duan)電試(shi)驗，而不發生損壞(huai)