防(fang)爆加(jia)熱(re)(re)(re)管(guan)(guan)是(shi)(shi)一種消耗電能轉(zhuan)換為(wei)熱(re)(re)(re)能,來對需加(jia)熱(re)(re)(re)物料進行加(jia)熱(re)(re)(re)。防(fang)爆加(jia)熱(re)(re)(re)管(guan)(guan)是(shi)(shi)由外到里外殼(不繡(xiu)鋼(gang)(gang)/碳鋼(gang)(gang)/銅(tong)/鈦材等(deng)、發(fa)熱(re)(re)(re)絲(si)(鎳鉻鉛合(he)金)、填充物(氧化(hua)鎂,作用是(shi)(shi)導(dao)熱(re)(re)(re)、絕緣(yuan))、外殼(不繡(xiu)鋼(gang)(gang)、碳鋼(gang)(gang)、鈦材、銅(tong) 等(deng))、陶(tao)瓷封頭(作用:絕緣(yuan))、防(fang)爆盒組成的。加(jia)熱(re)(re)(re)管(guan)(guan)在工作中(zhong)(zhong)低溫(wen)流(liu)體介質(zhi)通過管(guan)(guan)道(dao)在壓力作用下進入其輸(shu)入口,沿著電加(jia)熱(re)(re)(re)容器內(nei)部特定換熱(re)(re)(re)流(liu)道(dao),運用空氣(qi)(qi)電熱(re)(re)(re)管(guan)(guan)的流(liu)體熱(re)(re)(re)力學原理(li)設計的路徑,帶走(zou)空氣(qi)(qi)加(jia)熱(re)(re)(re)管(guan)(guan)中(zhong)(zhong)的電熱(re)(re)(re)元件工作中(zhong)(zhong)所(suo)產生的高溫(wen)熱(re)(re)(re)能量(liang),使空氣(qi)(qi)加(jia)熱(re)(re)(re)管(guan)(guan)被加(jia)熱(re)(re)(re)介質(zhi)溫(wen)度升高,加(jia)熱(re)(re)(re)管(guan)(guan)出口得(de)到工藝要求的高溫(wen)介質(zhi)。
產品(pin)特點
1.升溫(wen)時間(jian)在試(shi)驗(yan)電(dian)壓下(xia),元(yuan)件從(cong)環境(jing)溫(wen)度升至試(shi)驗(yan)溫(wen)度時間(jian)應不大(da)于15min
2.額(e)(e)定(ding)功(gong)(gong)率偏差在充分發熱(re)的條件(jian)下,元(yuan)件(jian)的額(e)(e)定(ding)功(gong)(gong)率的偏差應(ying)不超(chao)過下列規定(ding)的范圍;對(dui)額(e)(e)定(ding)功(gong)(gong)率小于等于100W的元(yuan)件(jian)為(wei):士(shi)10%。對(dui)額(e)(e)定(ding)功(gong)(gong)率大于100W的元(yuan)件(jian)為(wei)+5%~- 10%或10W,取兩者中的較大值(zhi)。
3.泄露(lu)電(dian)流(liu)冷態泄露(lu)電(dian)流(liu)以及水壓和密封試驗后泄露(lu)電(dian)流(liu)應不超(chao)過0.5mA工作(zuo)(zuo)溫度(du)下的熱態泄露(lu)電(dian)流(liu)應不超(chao)過公(gong)式(shi)中的計算值(zhi),但(dan)不超(chao)過5mA I=1/6 (tTX0.00001) I一 熱態泄露(lu)電(dian)流(liu)mA t-發熱長(chang)度(du)mm T-工作(zuo)(zuo)溫度(du)C多(duo)個元(yuan)件串聯到電(dian)源中時(shi),應以這(zhe)一組元(yuan)件為 整體進行泄露(lu)電(dian)流(liu)試驗。
4. 絕(jue)緣(yuan)電(dian)(dian)阻(zu)出(chu)廠檢驗時冷態(tai)(tai)絕(jue)緣(yuan)電(dian)(dian)阻(zu)應不(bu)(bu)小于50MQ密封試驗后,長期存(cun)放或者使用(yong)后的(de)絕(jue)緣(yuan)電(dian)(dian)阻(zu)應不(bu)(bu)消與MQ工(gong)作溫(wen)(wen)度(du)(du)下的(de)熱態(tai)(tai)絕(jue)緣(yuan)電(dian)(dian)阻(zu)應不(bu)(bu)低于公(gong)式中(zhong)的(de)計算值(zhi),但應不(bu)(bu)小于1MQ R=「(10-0.015T) /t」X0.001 R熱態(tai)(tai)絕(jue)緣(yuan)電(dian)(dian)阻(zu)MQ t一-發(fa) 熱長度(du)(du)mmT一工(gong)作溫(wen)(wen)度(du)(du)°C
5.絕緣耐壓(ya)強度元件應在規定的試驗條件和(he)試驗電壓(ya)下(xia)保(bao)持1min,而(er)無(wu)閃絡和(he)擊穿現象
6.經受通(tong)斷電(dian)的能力元(yuan)件應(ying)能在規定的試驗條(tiao)件下經歷2000次通(tong)斷電(dian)試驗,而不(bu)發生(sheng)損壞(huai)