防爆加(jia)(jia)熱(re)管(guan)(guan)(guan)是(shi)一種消(xiao)耗電能轉換(huan)為熱(re)能,來對需加(jia)(jia)熱(re)物(wu)(wu)料進行加(jia)(jia)熱(re)。防爆加(jia)(jia)熱(re)管(guan)(guan)(guan)是(shi)由外(wai)到(dao)里(li)外(wai)殼(不(bu)繡(xiu)鋼(gang)(gang)(gang)(gang)/碳(tan)鋼(gang)(gang)(gang)(gang)/銅/鈦(tai)(tai)材等、發熱(re)絲(鎳(nie)鉻鉛合金(jin))、填充物(wu)(wu)(氧化鎂,作用(yong)是(shi)導熱(re)、絕緣)、外(wai)殼(不(bu)繡(xiu)鋼(gang)(gang)(gang)(gang)、碳(tan)鋼(gang)(gang)(gang)(gang)、鈦(tai)(tai)材、銅 等)、陶(tao)瓷封頭(作用(yong):絕緣)、防爆盒組成(cheng)的(de)。加(jia)(jia)熱(re)管(guan)(guan)(guan)在工作中低溫流(liu)體介(jie)質通過(guo)管(guan)(guan)(guan)道在壓力作用(yong)下進入其輸(shu)入口(kou),沿著電加(jia)(jia)熱(re)容器內部(bu)特定換(huan)熱(re)流(liu)道,運用(yong)空(kong)(kong)氣(qi)電熱(re)管(guan)(guan)(guan)的(de)流(liu)體熱(re)力學原理設計(ji)的(de)路徑,帶走空(kong)(kong)氣(qi)加(jia)(jia)熱(re)管(guan)(guan)(guan)中的(de)電熱(re)元件工作中所產生的(de)高溫熱(re)能量,使空(kong)(kong)氣(qi)加(jia)(jia)熱(re)管(guan)(guan)(guan)被加(jia)(jia)熱(re)介(jie)質溫度升高,加(jia)(jia)熱(re)管(guan)(guan)(guan)出(chu)口(kou)得到(dao)工藝要求的(de)高溫介(jie)質。
產品特點(dian)
1.升(sheng)溫時(shi)間在試(shi)驗電壓(ya)下,元件從環境溫度(du)升(sheng)至(zhi)試(shi)驗溫度(du)時(shi)間應(ying)不大于15min
2.額定(ding)(ding)功(gong)(gong)率偏(pian)差(cha)在充分發熱的(de)條(tiao)件下,元(yuan)(yuan)件的(de)額定(ding)(ding)功(gong)(gong)率的(de)偏(pian)差(cha)應不超過下列規定(ding)(ding)的(de)范(fan)圍;對(dui)額定(ding)(ding)功(gong)(gong)率小于等于100W的(de)元(yuan)(yuan)件為(wei):士10%。對(dui)額定(ding)(ding)功(gong)(gong)率大于100W的(de)元(yuan)(yuan)件為(wei)+5%~- 10%或(huo)10W,取兩者中的(de)較大值(zhi)。
3.泄(xie)(xie)露電流(liu)(liu)冷(leng)態(tai)泄(xie)(xie)露電流(liu)(liu)以及水(shui)壓(ya)和密封(feng)試(shi)驗后泄(xie)(xie)露電流(liu)(liu)應不超(chao)(chao)過(guo)0.5mA工(gong)作溫(wen)(wen)度下(xia)的(de)熱態(tai)泄(xie)(xie)露電流(liu)(liu)應不超(chao)(chao)過(guo)公式(shi)中(zhong)的(de)計算(suan)值(zhi),但不超(chao)(chao)過(guo)5mA I=1/6 (tTX0.00001) I一 熱態(tai)泄(xie)(xie)露電流(liu)(liu)mA t-發熱長度mm T-工(gong)作溫(wen)(wen)度C多個元件(jian)串聯(lian)到電源(yuan)中(zhong)時,應以這一組元件(jian)為 整(zheng)體進行泄(xie)(xie)露電流(liu)(liu)試(shi)驗。
4. 絕(jue)(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)出廠檢驗時冷態絕(jue)(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)應(ying)不(bu)(bu)小(xiao)于50MQ密(mi)封試(shi)驗后(hou)(hou),長期存(cun)放或者使(shi)用(yong)后(hou)(hou)的絕(jue)(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)應(ying)不(bu)(bu)消(xiao)與MQ工作溫度(du)下的熱(re)態絕(jue)(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)應(ying)不(bu)(bu)低于公式中的計算值,但應(ying)不(bu)(bu)小(xiao)于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態絕(jue)(jue)(jue)緣(yuan)電(dian)(dian)阻(zu)MQ t一(yi)(yi)-發(fa) 熱(re)長度(du)mmT一(yi)(yi)工作溫度(du)°C
5.絕緣(yuan)耐(nai)壓強(qiang)度元件(jian)應在規定(ding)的試(shi)驗條件(jian)和(he)試(shi)驗電壓下(xia)保持1min,而無閃絡和(he)擊(ji)穿現(xian)象(xiang)
6.經(jing)受通(tong)斷電(dian)的能(neng)力元件應(ying)能(neng)在(zai)規定的試(shi)驗(yan)(yan)條件下(xia)經(jing)歷2000次(ci)通(tong)斷電(dian)試(shi)驗(yan)(yan),而不發(fa)生損(sun)壞