防爆(bao)加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)是(shi)一種消耗電(dian)能(neng)轉換(huan)為熱(re)(re)(re)(re)能(neng),來對(dui)需加(jia)(jia)(jia)熱(re)(re)(re)(re)物(wu)料進(jin)行加(jia)(jia)(jia)熱(re)(re)(re)(re)。防爆(bao)加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)是(shi)由(you)外到里外殼(ke)(不(bu)繡(xiu)(xiu)鋼(gang)/碳鋼(gang)/銅/鈦(tai)材等(deng)(deng)、發熱(re)(re)(re)(re)絲(si)(鎳鉻鉛合金)、填充物(wu)(氧化鎂,作用(yong)是(shi)導熱(re)(re)(re)(re)、絕緣)、外殼(ke)(不(bu)繡(xiu)(xiu)鋼(gang)、碳鋼(gang)、鈦(tai)材、銅 等(deng)(deng))、陶瓷封頭(作用(yong):絕緣)、防爆(bao)盒組成的。加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)在工(gong)作中低溫(wen)流體介(jie)質(zhi)(zhi)通過管(guan)(guan)道在壓力作用(yong)下進(jin)入(ru)其輸入(ru)口(kou),沿(yan)著電(dian)加(jia)(jia)(jia)熱(re)(re)(re)(re)容器內(nei)部特定(ding)換(huan)熱(re)(re)(re)(re)流道,運(yun)用(yong)空氣(qi)電(dian)熱(re)(re)(re)(re)管(guan)(guan)的流體熱(re)(re)(re)(re)力學原理(li)設計的路徑,帶(dai)走(zou)空氣(qi)加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)中的電(dian)熱(re)(re)(re)(re)元(yuan)件工(gong)作中所產生的高溫(wen)熱(re)(re)(re)(re)能(neng)量,使空氣(qi)加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)被加(jia)(jia)(jia)熱(re)(re)(re)(re)介(jie)質(zhi)(zhi)溫(wen)度升(sheng)高,加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)出口(kou)得到工(gong)藝要求(qiu)的高溫(wen)介(jie)質(zhi)(zhi)。
產品特點
1.升溫時間在(zai)試驗電壓下,元件(jian)從環境溫度(du)升至試驗溫度(du)時間應不(bu)大(da)于15min
2.額(e)(e)定(ding)功(gong)率(lv)(lv)偏差在充分發熱的條件(jian)下,元(yuan)件(jian)的額(e)(e)定(ding)功(gong)率(lv)(lv)的偏差應不超過下列規定(ding)的范(fan)圍;對(dui)額(e)(e)定(ding)功(gong)率(lv)(lv)小于等(deng)于100W的元(yuan)件(jian)為:士10%。對(dui)額(e)(e)定(ding)功(gong)率(lv)(lv)大于100W的元(yuan)件(jian)為+5%~- 10%或10W,取兩者中的較大值。
3.泄露電(dian)(dian)流冷態(tai)泄露電(dian)(dian)流以(yi)及(ji)水壓和密封(feng)試(shi)驗后泄露電(dian)(dian)流應不(bu)超(chao)過(guo)0.5mA工(gong)作溫度下的熱態(tai)泄露電(dian)(dian)流應不(bu)超(chao)過(guo)公式中(zhong)的計算值,但不(bu)超(chao)過(guo)5mA I=1/6 (tTX0.00001) I一 熱態(tai)泄露電(dian)(dian)流mA t-發熱長度mm T-工(gong)作溫度C多(duo)個元件串聯到(dao)電(dian)(dian)源中(zhong)時,應以(yi)這(zhe)一組元件為 整(zheng)體進行泄露電(dian)(dian)流試(shi)驗。
4. 絕(jue)緣(yuan)電(dian)阻出(chu)廠檢驗(yan)時冷態絕(jue)緣(yuan)電(dian)阻應(ying)不小于50MQ密封(feng)試驗(yan)后,長(chang)期存放(fang)或者使用后的(de)絕(jue)緣(yuan)電(dian)阻應(ying)不消與MQ工(gong)作溫(wen)度下的(de)熱態絕(jue)緣(yuan)電(dian)阻應(ying)不低(di)于公式中的(de)計算值,但應(ying)不小于1MQ R=「(10-0.015T) /t」X0.001 R熱態絕(jue)緣(yuan)電(dian)阻MQ t一(yi)(yi)-發 熱長(chang)度mmT一(yi)(yi)工(gong)作溫(wen)度°C
5.絕緣(yuan)耐壓強度(du)元件(jian)應在規(gui)定的試驗(yan)條(tiao)件(jian)和試驗(yan)電壓下保持1min,而無閃絡和擊(ji)穿現象
6.經(jing)受通(tong)(tong)斷(duan)電(dian)的能力元件應能在規定的試驗條件下經(jing)歷2000次通(tong)(tong)斷(duan)電(dian)試驗,而不發生損壞(huai)