防(fang)爆加(jia)(jia)熱(re)(re)(re)管(guan)(guan)是(shi)一種(zhong)消耗電能(neng)轉換為熱(re)(re)(re)能(neng),來對需加(jia)(jia)熱(re)(re)(re)物料進行加(jia)(jia)熱(re)(re)(re)。防(fang)爆加(jia)(jia)熱(re)(re)(re)管(guan)(guan)是(shi)由外到(dao)里外殼(ke)(不(bu)繡(xiu)(xiu)鋼(gang)(gang)/碳(tan)鋼(gang)(gang)/銅/鈦材(cai)等(deng)、發熱(re)(re)(re)絲(si)(鎳鉻鉛(qian)合金)、填充物(氧化鎂,作用(yong)(yong)(yong)是(shi)導熱(re)(re)(re)、絕(jue)緣(yuan))、外殼(ke)(不(bu)繡(xiu)(xiu)鋼(gang)(gang)、碳(tan)鋼(gang)(gang)、鈦材(cai)、銅 等(deng))、陶瓷(ci)封頭(作用(yong)(yong)(yong):絕(jue)緣(yuan))、防(fang)爆盒組成的。加(jia)(jia)熱(re)(re)(re)管(guan)(guan)在工(gong)作中(zhong)低(di)溫(wen)流體介質(zhi)(zhi)通過管(guan)(guan)道在壓(ya)力作用(yong)(yong)(yong)下進入(ru)其輸(shu)入(ru)口,沿著電加(jia)(jia)熱(re)(re)(re)容器內(nei)部特定換熱(re)(re)(re)流道,運(yun)用(yong)(yong)(yong)空氣電熱(re)(re)(re)管(guan)(guan)的流體熱(re)(re)(re)力學原理設計的路徑(jing),帶走空氣加(jia)(jia)熱(re)(re)(re)管(guan)(guan)中(zhong)的電熱(re)(re)(re)元件工(gong)作中(zhong)所產生的高溫(wen)熱(re)(re)(re)能(neng)量,使空氣加(jia)(jia)熱(re)(re)(re)管(guan)(guan)被加(jia)(jia)熱(re)(re)(re)介質(zhi)(zhi)溫(wen)度升高,加(jia)(jia)熱(re)(re)(re)管(guan)(guan)出口得到(dao)工(gong)藝要求的高溫(wen)介質(zhi)(zhi)。
產品(pin)特點(dian)
1.升溫時(shi)間在試(shi)(shi)驗電(dian)壓(ya)下,元件(jian)從環境溫度(du)升至試(shi)(shi)驗溫度(du)時(shi)間應不(bu)大于15min
2.額(e)定(ding)功(gong)率(lv)偏差在充分發熱的(de)條件下,元(yuan)件的(de)額(e)定(ding)功(gong)率(lv)的(de)偏差應不超過下列規定(ding)的(de)范圍;對額(e)定(ding)功(gong)率(lv)小(xiao)于等于100W的(de)元(yuan)件為:士(shi)10%。對額(e)定(ding)功(gong)率(lv)大于100W的(de)元(yuan)件為+5%~- 10%或10W,取(qu)兩者中的(de)較大值。
3.泄(xie)露(lu)(lu)(lu)電(dian)流(liu)(liu)冷態(tai)泄(xie)露(lu)(lu)(lu)電(dian)流(liu)(liu)以及水壓和密封試驗后泄(xie)露(lu)(lu)(lu)電(dian)流(liu)(liu)應不(bu)超過0.5mA工(gong)作溫(wen)度下(xia)的(de)熱態(tai)泄(xie)露(lu)(lu)(lu)電(dian)流(liu)(liu)應不(bu)超過公式中(zhong)的(de)計(ji)算值,但不(bu)超過5mA I=1/6 (tTX0.00001) I一(yi) 熱態(tai)泄(xie)露(lu)(lu)(lu)電(dian)流(liu)(liu)mA t-發熱長(chang)度mm T-工(gong)作溫(wen)度C多個元件串聯到電(dian)源中(zhong)時,應以這(zhe)一(yi)組(zu)元件為(wei) 整體進行(xing)泄(xie)露(lu)(lu)(lu)電(dian)流(liu)(liu)試驗。
4. 絕(jue)緣(yuan)電(dian)(dian)(dian)阻(zu)出廠檢驗時冷態(tai)絕(jue)緣(yuan)電(dian)(dian)(dian)阻(zu)應不(bu)(bu)小(xiao)于(yu)50MQ密(mi)封試驗后,長期存(cun)放或者(zhe)使用后的(de)絕(jue)緣(yuan)電(dian)(dian)(dian)阻(zu)應不(bu)(bu)消與MQ工(gong)作溫度下的(de)熱(re)態(tai)絕(jue)緣(yuan)電(dian)(dian)(dian)阻(zu)應不(bu)(bu)低于(yu)公式(shi)中的(de)計算(suan)值,但應不(bu)(bu)小(xiao)于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態(tai)絕(jue)緣(yuan)電(dian)(dian)(dian)阻(zu)MQ t一(yi)-發 熱(re)長度mmT一(yi)工(gong)作溫度°C
5.絕緣耐壓(ya)強(qiang)度(du)元件應在(zai)規定的試驗(yan)條件和試驗(yan)電壓(ya)下保(bao)持1min,而無閃絡和擊穿現象
6.經受(shou)通斷電的能力元件應能在規定的試(shi)驗(yan)條(tiao)件下經歷2000次通斷電試(shi)驗(yan),而不發生(sheng)損壞