防爆(bao)加熱(re)(re)(re)(re)管(guan)(guan)是一種消(xiao)耗電(dian)(dian)能(neng)轉換為熱(re)(re)(re)(re)能(neng),來對(dui)需加熱(re)(re)(re)(re)物料(liao)進行(xing)加熱(re)(re)(re)(re)。防爆(bao)加熱(re)(re)(re)(re)管(guan)(guan)是由外到(dao)(dao)里外殼(ke)(不繡鋼/碳鋼/銅(tong)(tong)/鈦材等(deng)、發熱(re)(re)(re)(re)絲(鎳(nie)鉻鉛(qian)合(he)金)、填充物(氧化鎂(mei),作(zuo)(zuo)(zuo)用(yong)是導熱(re)(re)(re)(re)、絕緣(yuan))、外殼(ke)(不繡鋼、碳鋼、鈦材、銅(tong)(tong) 等(deng))、陶瓷(ci)封頭(作(zuo)(zuo)(zuo)用(yong):絕緣(yuan))、防爆(bao)盒組成的(de)。加熱(re)(re)(re)(re)管(guan)(guan)在工(gong)作(zuo)(zuo)(zuo)中(zhong)(zhong)(zhong)低溫流(liu)(liu)體(ti)(ti)介(jie)(jie)質通過管(guan)(guan)道(dao)在壓力作(zuo)(zuo)(zuo)用(yong)下進入(ru)其(qi)輸入(ru)口,沿(yan)著電(dian)(dian)加熱(re)(re)(re)(re)容器內部特定換熱(re)(re)(re)(re)流(liu)(liu)道(dao),運用(yong)空(kong)氣電(dian)(dian)熱(re)(re)(re)(re)管(guan)(guan)的(de)流(liu)(liu)體(ti)(ti)熱(re)(re)(re)(re)力學原(yuan)理(li)設計的(de)路(lu)徑,帶走空(kong)氣加熱(re)(re)(re)(re)管(guan)(guan)中(zhong)(zhong)(zhong)的(de)電(dian)(dian)熱(re)(re)(re)(re)元(yuan)件工(gong)作(zuo)(zuo)(zuo)中(zhong)(zhong)(zhong)所(suo)產生的(de)高溫熱(re)(re)(re)(re)能(neng)量,使空(kong)氣加熱(re)(re)(re)(re)管(guan)(guan)被加熱(re)(re)(re)(re)介(jie)(jie)質溫度升高,加熱(re)(re)(re)(re)管(guan)(guan)出口得(de)到(dao)(dao)工(gong)藝要求的(de)高溫介(jie)(jie)質。
產品特點
1.升溫時間在試驗電壓下,元件從(cong)環境溫度(du)升至(zhi)試驗溫度(du)時間應不大于15min
2.額定(ding)功率(lv)偏差在充分發(fa)熱(re)的(de)(de)(de)條件下(xia)(xia),元件的(de)(de)(de)額定(ding)功率(lv)的(de)(de)(de)偏差應不超過(guo)下(xia)(xia)列規定(ding)的(de)(de)(de)范圍(wei);對額定(ding)功率(lv)小(xiao)于等于100W的(de)(de)(de)元件為:士(shi)10%。對額定(ding)功率(lv)大于100W的(de)(de)(de)元件為+5%~- 10%或10W,取(qu)兩(liang)者中的(de)(de)(de)較大值。
3.泄露電(dian)(dian)流(liu)冷態(tai)泄露電(dian)(dian)流(liu)以及水(shui)壓和密(mi)封(feng)試驗(yan)后泄露電(dian)(dian)流(liu)應(ying)不(bu)超(chao)過(guo)(guo)0.5mA工作溫(wen)度下(xia)的(de)熱(re)(re)態(tai)泄露電(dian)(dian)流(liu)應(ying)不(bu)超(chao)過(guo)(guo)公式中(zhong)的(de)計算值,但不(bu)超(chao)過(guo)(guo)5mA I=1/6 (tTX0.00001) I一(yi)(yi) 熱(re)(re)態(tai)泄露電(dian)(dian)流(liu)mA t-發熱(re)(re)長度mm T-工作溫(wen)度C多個元(yuan)件串聯到電(dian)(dian)源(yuan)中(zhong)時,應(ying)以這一(yi)(yi)組元(yuan)件為 整體進行(xing)泄露電(dian)(dian)流(liu)試驗(yan)。
4. 絕(jue)(jue)緣電(dian)(dian)阻(zu)出廠檢驗(yan)時冷態絕(jue)(jue)緣電(dian)(dian)阻(zu)應(ying)不小于50MQ密(mi)封(feng)試驗(yan)后,長期存放或者使用后的絕(jue)(jue)緣電(dian)(dian)阻(zu)應(ying)不消與MQ工(gong)作溫度下的熱(re)態絕(jue)(jue)緣電(dian)(dian)阻(zu)應(ying)不低于公式中的計算值(zhi),但應(ying)不小于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態絕(jue)(jue)緣電(dian)(dian)阻(zu)MQ t一(yi)(yi)-發 熱(re)長度mmT一(yi)(yi)工(gong)作溫度°C
5.絕緣耐(nai)壓強度(du)元(yuan)件應在規定(ding)的試驗條件和(he)試驗電壓下保持1min,而無閃絡和(he)擊(ji)穿現象
6.經(jing)受通斷電(dian)的能力元件應能在規定(ding)的試驗條件下經(jing)歷(li)2000次通斷電(dian)試驗,而不(bu)發生損壞