防(fang)爆加(jia)(jia)(jia)(jia)(jia)熱(re)管(guan)(guan)是(shi)(shi)一種消耗電(dian)能(neng)轉換為(wei)熱(re)能(neng),來(lai)對需加(jia)(jia)(jia)(jia)(jia)熱(re)物(wu)料進(jin)(jin)行(xing)加(jia)(jia)(jia)(jia)(jia)熱(re)。防(fang)爆加(jia)(jia)(jia)(jia)(jia)熱(re)管(guan)(guan)是(shi)(shi)由外到里外殼(ke)(不繡鋼(gang)(gang)/碳(tan)鋼(gang)(gang)/銅/鈦材(cai)等、發熱(re)絲(鎳鉻鉛合金)、填充物(wu)(氧化鎂,作(zuo)(zuo)用(yong)(yong)(yong)是(shi)(shi)導熱(re)、絕緣)、外殼(ke)(不繡鋼(gang)(gang)、碳(tan)鋼(gang)(gang)、鈦材(cai)、銅 等)、陶(tao)瓷封頭(作(zuo)(zuo)用(yong)(yong)(yong):絕緣)、防(fang)爆盒組(zu)成的(de)。加(jia)(jia)(jia)(jia)(jia)熱(re)管(guan)(guan)在工(gong)(gong)(gong)作(zuo)(zuo)中(zhong)低(di)溫流(liu)體介質(zhi)通(tong)過管(guan)(guan)道在壓力(li)作(zuo)(zuo)用(yong)(yong)(yong)下進(jin)(jin)入其輸入口,沿著電(dian)加(jia)(jia)(jia)(jia)(jia)熱(re)容器內部特定換熱(re)流(liu)道,運用(yong)(yong)(yong)空氣(qi)(qi)電(dian)熱(re)管(guan)(guan)的(de)流(liu)體熱(re)力(li)學原理設(she)計的(de)路徑,帶走(zou)空氣(qi)(qi)加(jia)(jia)(jia)(jia)(jia)熱(re)管(guan)(guan)中(zhong)的(de)電(dian)熱(re)元件工(gong)(gong)(gong)作(zuo)(zuo)中(zhong)所產生的(de)高(gao)(gao)溫熱(re)能(neng)量(liang),使空氣(qi)(qi)加(jia)(jia)(jia)(jia)(jia)熱(re)管(guan)(guan)被加(jia)(jia)(jia)(jia)(jia)熱(re)介質(zhi)溫度(du)升高(gao)(gao),加(jia)(jia)(jia)(jia)(jia)熱(re)管(guan)(guan)出(chu)口得(de)到工(gong)(gong)(gong)藝要(yao)求(qiu)的(de)高(gao)(gao)溫介質(zhi)。
產(chan)品特(te)點
1.升溫時(shi)間在試(shi)驗電壓下,元(yuan)件(jian)從環境(jing)溫度(du)(du)升至試(shi)驗溫度(du)(du)時(shi)間應不大于15min
2.額(e)定功(gong)(gong)率偏差(cha)在充分發(fa)熱的(de)(de)條件(jian)(jian)下,元(yuan)件(jian)(jian)的(de)(de)額(e)定功(gong)(gong)率的(de)(de)偏差(cha)應不超(chao)過下列規定的(de)(de)范圍;對額(e)定功(gong)(gong)率小于(yu)等于(yu)100W的(de)(de)元(yuan)件(jian)(jian)為:士10%。對額(e)定功(gong)(gong)率大于(yu)100W的(de)(de)元(yuan)件(jian)(jian)為+5%~- 10%或10W,取兩者中的(de)(de)較(jiao)大值(zhi)。
3.泄露(lu)電流(liu)冷態泄露(lu)電流(liu)以(yi)及(ji)水壓和(he)密封(feng)試驗后泄露(lu)電流(liu)應不(bu)(bu)超過0.5mA工(gong)作溫(wen)度(du)下的熱態泄露(lu)電流(liu)應不(bu)(bu)超過公式中(zhong)(zhong)的計算值,但不(bu)(bu)超過5mA I=1/6 (tTX0.00001) I一(yi) 熱態泄露(lu)電流(liu)mA t-發熱長度(du)mm T-工(gong)作溫(wen)度(du)C多個(ge)元(yuan)件(jian)串聯到電源中(zhong)(zhong)時(shi),應以(yi)這一(yi)組元(yuan)件(jian)為 整體進行(xing)泄露(lu)電流(liu)試驗。
4. 絕(jue)緣(yuan)電(dian)(dian)阻(zu)出廠檢(jian)驗(yan)時冷態絕(jue)緣(yuan)電(dian)(dian)阻(zu)應(ying)(ying)不(bu)小于50MQ密封試驗(yan)后,長期存放或者使(shi)用后的絕(jue)緣(yuan)電(dian)(dian)阻(zu)應(ying)(ying)不(bu)消與(yu)MQ工作溫度(du)下的熱(re)態絕(jue)緣(yuan)電(dian)(dian)阻(zu)應(ying)(ying)不(bu)低于公式中的計算值,但應(ying)(ying)不(bu)小于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態絕(jue)緣(yuan)電(dian)(dian)阻(zu)MQ t一-發 熱(re)長度(du)mmT一工作溫度(du)°C
5.絕緣耐壓(ya)強度元件應在規(gui)定(ding)的試驗條件和試驗電壓(ya)下保(bao)持1min,而無閃絡和擊穿(chuan)現象
6.經(jing)受(shou)通(tong)斷電(dian)的能力元件(jian)應(ying)能在規定的試驗條件(jian)下經(jing)歷(li)2000次通(tong)斷電(dian)試驗,而不發生損壞(huai)