防(fang)(fang)爆加(jia)熱(re)(re)管(guan)是(shi)一種消耗電能(neng)轉換為(wei)熱(re)(re)能(neng),來(lai)對需加(jia)熱(re)(re)物料進行加(jia)熱(re)(re)。防(fang)(fang)爆加(jia)熱(re)(re)管(guan)是(shi)由外(wai)到(dao)里外(wai)殼(ke)(不繡鋼/碳鋼/銅/鈦(tai)材等(deng)、發熱(re)(re)絲(鎳鉻鉛合金)、填充物(氧化鎂,作用(yong)(yong)是(shi)導熱(re)(re)、絕(jue)緣)、外(wai)殼(ke)(不繡鋼、碳鋼、鈦(tai)材、銅 等(deng))、陶瓷封頭(作用(yong)(yong):絕(jue)緣)、防(fang)(fang)爆盒(he)組成的(de)(de)。加(jia)熱(re)(re)管(guan)在工(gong)作中低溫流(liu)(liu)體(ti)介質(zhi)通(tong)過(guo)管(guan)道在壓力作用(yong)(yong)下進入(ru)其輸入(ru)口(kou),沿著電加(jia)熱(re)(re)容器內部特定換熱(re)(re)流(liu)(liu)道,運用(yong)(yong)空(kong)氣電熱(re)(re)管(guan)的(de)(de)流(liu)(liu)體(ti)熱(re)(re)力學原理設計的(de)(de)路徑(jing),帶走空(kong)氣加(jia)熱(re)(re)管(guan)中的(de)(de)電熱(re)(re)元件工(gong)作中所產生的(de)(de)高溫熱(re)(re)能(neng)量,使空(kong)氣加(jia)熱(re)(re)管(guan)被加(jia)熱(re)(re)介質(zhi)溫度升高,加(jia)熱(re)(re)管(guan)出口(kou)得到(dao)工(gong)藝要求的(de)(de)高溫介質(zhi)。
產(chan)品特點(dian)
1.升溫(wen)(wen)時間(jian)在試驗電壓下(xia),元件從(cong)環境溫(wen)(wen)度升至試驗溫(wen)(wen)度時間(jian)應不(bu)大于15min
2.額(e)(e)定(ding)功(gong)率(lv)偏差(cha)在充分發熱的條件(jian)下(xia),元(yuan)件(jian)的額(e)(e)定(ding)功(gong)率(lv)的偏差(cha)應不(bu)超(chao)過下(xia)列規定(ding)的范圍;對(dui)額(e)(e)定(ding)功(gong)率(lv)小于(yu)等于(yu)100W的元(yuan)件(jian)為:士10%。對(dui)額(e)(e)定(ding)功(gong)率(lv)大于(yu)100W的元(yuan)件(jian)為+5%~- 10%或10W,取兩者(zhe)中的較大值。
3.泄(xie)露(lu)電(dian)(dian)(dian)流(liu)(liu)冷態泄(xie)露(lu)電(dian)(dian)(dian)流(liu)(liu)以(yi)及水壓和(he)密封試驗后泄(xie)露(lu)電(dian)(dian)(dian)流(liu)(liu)應不(bu)超(chao)過(guo)0.5mA工作溫(wen)度(du)下的熱(re)態泄(xie)露(lu)電(dian)(dian)(dian)流(liu)(liu)應不(bu)超(chao)過(guo)公(gong)式中(zhong)(zhong)的計算(suan)值,但不(bu)超(chao)過(guo)5mA I=1/6 (tTX0.00001) I一(yi) 熱(re)態泄(xie)露(lu)電(dian)(dian)(dian)流(liu)(liu)mA t-發熱(re)長度(du)mm T-工作溫(wen)度(du)C多(duo)個元(yuan)件(jian)串聯到電(dian)(dian)(dian)源中(zhong)(zhong)時,應以(yi)這一(yi)組元(yuan)件(jian)為 整體進行(xing)泄(xie)露(lu)電(dian)(dian)(dian)流(liu)(liu)試驗。
4. 絕緣(yuan)(yuan)電(dian)(dian)阻出廠(chang)檢驗時(shi)冷態(tai)絕緣(yuan)(yuan)電(dian)(dian)阻應(ying)不(bu)小(xiao)于(yu)50MQ密封試(shi)驗后,長期存放(fang)或者使用后的絕緣(yuan)(yuan)電(dian)(dian)阻應(ying)不(bu)消與MQ工作溫(wen)度下的熱(re)(re)態(tai)絕緣(yuan)(yuan)電(dian)(dian)阻應(ying)不(bu)低(di)于(yu)公式中的計算值,但應(ying)不(bu)小(xiao)于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱(re)(re)態(tai)絕緣(yuan)(yuan)電(dian)(dian)阻MQ t一-發 熱(re)(re)長度mmT一工作溫(wen)度°C
5.絕緣耐壓強度元件應在規定的試(shi)驗(yan)條(tiao)件和(he)試(shi)驗(yan)電(dian)壓下(xia)保(bao)持1min,而無閃絡(luo)和(he)擊穿現象
6.經受通斷(duan)電(dian)的(de)能(neng)力元件應(ying)能(neng)在規定的(de)試(shi)驗條件下經歷2000次通斷(duan)電(dian)試(shi)驗,而(er)不發生損壞