防爆(bao)加(jia)熱(re)(re)(re)(re)管(guan)是(shi)一種消耗(hao)電(dian)能轉換為熱(re)(re)(re)(re)能,來對需加(jia)熱(re)(re)(re)(re)物料進行加(jia)熱(re)(re)(re)(re)。防爆(bao)加(jia)熱(re)(re)(re)(re)管(guan)是(shi)由外(wai)(wai)到里外(wai)(wai)殼(不繡鋼(gang)(gang)/碳(tan)鋼(gang)(gang)/銅/鈦(tai)材(cai)等、發(fa)熱(re)(re)(re)(re)絲(鎳鉻鉛合金)、填(tian)充物(氧化(hua)鎂,作(zuo)(zuo)用是(shi)導熱(re)(re)(re)(re)、絕緣)、外(wai)(wai)殼(不繡鋼(gang)(gang)、碳(tan)鋼(gang)(gang)、鈦(tai)材(cai)、銅 等)、陶瓷(ci)封(feng)頭(作(zuo)(zuo)用:絕緣)、防爆(bao)盒組成的(de)(de)(de)。加(jia)熱(re)(re)(re)(re)管(guan)在工作(zuo)(zuo)中(zhong)低(di)溫流(liu)體介(jie)質通(tong)過管(guan)道(dao)在壓力作(zuo)(zuo)用下進入其輸(shu)入口,沿著電(dian)加(jia)熱(re)(re)(re)(re)容器內部特定換熱(re)(re)(re)(re)流(liu)道(dao),運用空(kong)(kong)氣(qi)電(dian)熱(re)(re)(re)(re)管(guan)的(de)(de)(de)流(liu)體熱(re)(re)(re)(re)力學原(yuan)理設計(ji)的(de)(de)(de)路徑,帶走空(kong)(kong)氣(qi)加(jia)熱(re)(re)(re)(re)管(guan)中(zhong)的(de)(de)(de)電(dian)熱(re)(re)(re)(re)元件(jian)工作(zuo)(zuo)中(zhong)所(suo)產生的(de)(de)(de)高溫熱(re)(re)(re)(re)能量,使(shi)空(kong)(kong)氣(qi)加(jia)熱(re)(re)(re)(re)管(guan)被加(jia)熱(re)(re)(re)(re)介(jie)質溫度升高,加(jia)熱(re)(re)(re)(re)管(guan)出口得到工藝(yi)要求(qiu)的(de)(de)(de)高溫介(jie)質。
產品特(te)點
1.升(sheng)溫(wen)時(shi)間在試驗(yan)電(dian)壓下,元件從環(huan)境溫(wen)度升(sheng)至試驗(yan)溫(wen)度時(shi)間應(ying)不大于(yu)15min
2.額定(ding)功率(lv)偏差(cha)在充分發熱的(de)條件(jian)下(xia),元件(jian)的(de)額定(ding)功率(lv)的(de)偏差(cha)應不超過下(xia)列規定(ding)的(de)范(fan)圍;對額定(ding)功率(lv)小(xiao)于等于100W的(de)元件(jian)為:士10%。對額定(ding)功率(lv)大于100W的(de)元件(jian)為+5%~- 10%或10W,取兩者中的(de)較(jiao)大值。
3.泄(xie)(xie)(xie)(xie)(xie)露(lu)電(dian)(dian)(dian)(dian)(dian)流(liu)冷態泄(xie)(xie)(xie)(xie)(xie)露(lu)電(dian)(dian)(dian)(dian)(dian)流(liu)以及水壓和密封試驗后泄(xie)(xie)(xie)(xie)(xie)露(lu)電(dian)(dian)(dian)(dian)(dian)流(liu)應不(bu)超(chao)過0.5mA工作溫度(du)下的(de)(de)熱態泄(xie)(xie)(xie)(xie)(xie)露(lu)電(dian)(dian)(dian)(dian)(dian)流(liu)應不(bu)超(chao)過公(gong)式中(zhong)(zhong)的(de)(de)計(ji)算值,但不(bu)超(chao)過5mA I=1/6 (tTX0.00001) I一 熱態泄(xie)(xie)(xie)(xie)(xie)露(lu)電(dian)(dian)(dian)(dian)(dian)流(liu)mA t-發熱長度(du)mm T-工作溫度(du)C多個元件(jian)串聯到(dao)電(dian)(dian)(dian)(dian)(dian)源中(zhong)(zhong)時,應以這一組(zu)元件(jian)為 整體(ti)進行泄(xie)(xie)(xie)(xie)(xie)露(lu)電(dian)(dian)(dian)(dian)(dian)流(liu)試驗。
4. 絕緣(yuan)電(dian)(dian)阻(zu)出廠檢驗時冷態絕緣(yuan)電(dian)(dian)阻(zu)應不小(xiao)(xiao)于(yu)50MQ密封試驗后,長期存放或(huo)者使用(yong)后的(de)絕緣(yuan)電(dian)(dian)阻(zu)應不消與MQ工(gong)作溫(wen)度(du)下的(de)熱態絕緣(yuan)電(dian)(dian)阻(zu)應不低于(yu)公式中的(de)計(ji)算值(zhi),但應不小(xiao)(xiao)于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱態絕緣(yuan)電(dian)(dian)阻(zu)MQ t一(yi)-發 熱長度(du)mmT一(yi)工(gong)作溫(wen)度(du)°C
5.絕緣耐(nai)壓(ya)強度元(yuan)件應(ying)在規定的試驗條件和(he)試驗電(dian)壓(ya)下保持1min,而無(wu)閃絡和(he)擊穿現象
6.經(jing)受通斷電的(de)能力元件(jian)應(ying)能在(zai)規定(ding)的(de)試(shi)驗條(tiao)件(jian)下(xia)經(jing)歷(li)2000次(ci)通斷電試(shi)驗,而不發生損壞(huai)