防爆加(jia)熱(re)管(guan)(guan)是(shi)一種消耗電能轉換(huan)為(wei)熱(re)能,來對(dui)需加(jia)熱(re)物料(liao)進行加(jia)熱(re)。防爆加(jia)熱(re)管(guan)(guan)是(shi)由外(wai)到里外(wai)殼(ke)(不繡鋼/碳(tan)鋼/銅/鈦材(cai)等、發熱(re)絲(鎳鉻鉛(qian)合金)、填充物(氧化(hua)鎂,作用(yong)(yong)(yong)是(shi)導熱(re)、絕緣)、外(wai)殼(ke)(不繡鋼、碳(tan)鋼、鈦材(cai)、銅 等)、陶瓷(ci)封(feng)頭(作用(yong)(yong)(yong):絕緣)、防爆盒組成的。加(jia)熱(re)管(guan)(guan)在(zai)工作中(zhong)低溫流體介(jie)質(zhi)(zhi)通過管(guan)(guan)道(dao)在(zai)壓力作用(yong)(yong)(yong)下進入其輸入口,沿著電加(jia)熱(re)容(rong)器內部特定換(huan)熱(re)流道(dao),運用(yong)(yong)(yong)空氣電熱(re)管(guan)(guan)的流體熱(re)力學原理(li)設(she)計的路徑,帶走空氣加(jia)熱(re)管(guan)(guan)中(zhong)的電熱(re)元件工作中(zhong)所(suo)產生的高溫熱(re)能量,使空氣加(jia)熱(re)管(guan)(guan)被加(jia)熱(re)介(jie)質(zhi)(zhi)溫度(du)升高,加(jia)熱(re)管(guan)(guan)出口得到工藝要求的高溫介(jie)質(zhi)(zhi)。
產品特點
1.升溫時(shi)間(jian)在試驗(yan)電壓下(xia),元件從(cong)環境溫度(du)升至試驗(yan)溫度(du)時(shi)間(jian)應不大于15min
2.額定(ding)(ding)(ding)功(gong)率偏差在充分發熱的(de)(de)條件下,元(yuan)件的(de)(de)額定(ding)(ding)(ding)功(gong)率的(de)(de)偏差應(ying)不超過下列規定(ding)(ding)(ding)的(de)(de)范圍;對(dui)額定(ding)(ding)(ding)功(gong)率小于等于100W的(de)(de)元(yuan)件為:士10%。對(dui)額定(ding)(ding)(ding)功(gong)率大(da)于100W的(de)(de)元(yuan)件為+5%~- 10%或10W,取(qu)兩者中(zhong)的(de)(de)較(jiao)大(da)值。
3.泄(xie)(xie)露(lu)(lu)電(dian)(dian)(dian)流(liu)(liu)(liu)冷(leng)態泄(xie)(xie)露(lu)(lu)電(dian)(dian)(dian)流(liu)(liu)(liu)以及水壓和密(mi)封(feng)試(shi)驗后(hou)泄(xie)(xie)露(lu)(lu)電(dian)(dian)(dian)流(liu)(liu)(liu)應不(bu)超(chao)過0.5mA工作溫度(du)下的熱(re)態泄(xie)(xie)露(lu)(lu)電(dian)(dian)(dian)流(liu)(liu)(liu)應不(bu)超(chao)過公式中的計算(suan)值(zhi),但不(bu)超(chao)過5mA I=1/6 (tTX0.00001) I一 熱(re)態泄(xie)(xie)露(lu)(lu)電(dian)(dian)(dian)流(liu)(liu)(liu)mA t-發熱(re)長(chang)度(du)mm T-工作溫度(du)C多個元(yuan)(yuan)件(jian)串聯(lian)到電(dian)(dian)(dian)源中時,應以這一組元(yuan)(yuan)件(jian)為 整(zheng)體進行泄(xie)(xie)露(lu)(lu)電(dian)(dian)(dian)流(liu)(liu)(liu)試(shi)驗。
4. 絕(jue)(jue)緣(yuan)電(dian)阻出廠檢(jian)驗(yan)時冷態(tai)絕(jue)(jue)緣(yuan)電(dian)阻應不(bu)小于(yu)50MQ密封試驗(yan)后,長(chang)期存(cun)放或者使用后的絕(jue)(jue)緣(yuan)電(dian)阻應不(bu)消與MQ工作(zuo)溫度下的熱(re)(re)(re)態(tai)絕(jue)(jue)緣(yuan)電(dian)阻應不(bu)低于(yu)公式中的計算值,但應不(bu)小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱(re)(re)(re)態(tai)絕(jue)(jue)緣(yuan)電(dian)阻MQ t一(yi)-發 熱(re)(re)(re)長(chang)度mmT一(yi)工作(zuo)溫度°C
5.絕緣耐壓強度(du)元件應在規定(ding)的試驗條件和試驗電壓下保持(chi)1min,而(er)無閃絡和擊穿(chuan)現象
6.經受(shou)通斷(duan)電(dian)的(de)能(neng)力元件(jian)應能(neng)在(zai)規(gui)定的(de)試驗(yan)條件(jian)下經歷2000次通斷(duan)電(dian)試驗(yan),而(er)不發生損壞