防爆加(jia)(jia)(jia)熱(re)(re)(re)管(guan)是(shi)一種消耗電(dian)能(neng)(neng)轉(zhuan)換為熱(re)(re)(re)能(neng)(neng),來對需加(jia)(jia)(jia)熱(re)(re)(re)物(wu)料進(jin)行加(jia)(jia)(jia)熱(re)(re)(re)。防爆加(jia)(jia)(jia)熱(re)(re)(re)管(guan)是(shi)由外到(dao)里外殼(ke)(不(bu)(bu)繡(xiu)鋼/碳(tan)鋼/銅(tong)/鈦材(cai)等(deng)、發(fa)熱(re)(re)(re)絲(鎳鉻鉛合(he)金)、填充物(wu)(氧化鎂,作(zuo)用是(shi)導熱(re)(re)(re)、絕緣)、外殼(ke)(不(bu)(bu)繡(xiu)鋼、碳(tan)鋼、鈦材(cai)、銅(tong) 等(deng))、陶瓷封頭(作(zuo)用:絕緣)、防爆盒組(zu)成的。加(jia)(jia)(jia)熱(re)(re)(re)管(guan)在工作(zuo)中(zhong)低溫(wen)流(liu)(liu)體介質通過管(guan)道(dao)在壓(ya)力作(zuo)用下(xia)進(jin)入(ru)(ru)其(qi)輸入(ru)(ru)口,沿(yan)著電(dian)加(jia)(jia)(jia)熱(re)(re)(re)容(rong)器內部特(te)定換熱(re)(re)(re)流(liu)(liu)道(dao),運用空(kong)氣(qi)電(dian)熱(re)(re)(re)管(guan)的流(liu)(liu)體熱(re)(re)(re)力學原(yuan)理(li)設計(ji)的路徑(jing),帶(dai)走(zou)空(kong)氣(qi)加(jia)(jia)(jia)熱(re)(re)(re)管(guan)中(zhong)的電(dian)熱(re)(re)(re)元(yuan)件工作(zuo)中(zhong)所產生的高(gao)溫(wen)熱(re)(re)(re)能(neng)(neng)量,使空(kong)氣(qi)加(jia)(jia)(jia)熱(re)(re)(re)管(guan)被加(jia)(jia)(jia)熱(re)(re)(re)介質溫(wen)度升高(gao),加(jia)(jia)(jia)熱(re)(re)(re)管(guan)出口得到(dao)工藝要(yao)求的高(gao)溫(wen)介質。
產品(pin)特點
1.升(sheng)溫(wen)時間在(zai)試驗(yan)(yan)電壓下,元件從環境溫(wen)度升(sheng)至試驗(yan)(yan)溫(wen)度時間應不大于15min
2.額定(ding)(ding)(ding)功率偏差在充分發(fa)熱的(de)條件下,元(yuan)件的(de)額定(ding)(ding)(ding)功率的(de)偏差應不超過下列(lie)規定(ding)(ding)(ding)的(de)范(fan)圍(wei);對額定(ding)(ding)(ding)功率小于(yu)等于(yu)100W的(de)元(yuan)件為(wei):士10%。對額定(ding)(ding)(ding)功率大(da)于(yu)100W的(de)元(yuan)件為(wei)+5%~- 10%或(huo)10W,取兩(liang)者中的(de)較大(da)值。
3.泄(xie)(xie)露(lu)電(dian)(dian)流(liu)冷態(tai)泄(xie)(xie)露(lu)電(dian)(dian)流(liu)以及水(shui)壓(ya)和密封試驗后泄(xie)(xie)露(lu)電(dian)(dian)流(liu)應不(bu)(bu)超過0.5mA工(gong)作(zuo)溫度下的熱(re)態(tai)泄(xie)(xie)露(lu)電(dian)(dian)流(liu)應不(bu)(bu)超過公式中的計算(suan)值(zhi),但不(bu)(bu)超過5mA I=1/6 (tTX0.00001) I一(yi) 熱(re)態(tai)泄(xie)(xie)露(lu)電(dian)(dian)流(liu)mA t-發熱(re)長度mm T-工(gong)作(zuo)溫度C多個元件串(chuan)聯到電(dian)(dian)源(yuan)中時,應以這一(yi)組元件為 整體進行(xing)泄(xie)(xie)露(lu)電(dian)(dian)流(liu)試驗。
4. 絕緣電(dian)阻(zu)出廠(chang)檢(jian)驗(yan)時冷(leng)態(tai)絕緣電(dian)阻(zu)應不小于50MQ密封試驗(yan)后,長期存放或者使用后的絕緣電(dian)阻(zu)應不消與MQ工(gong)(gong)作(zuo)(zuo)溫度下的熱(re)態(tai)絕緣電(dian)阻(zu)應不低(di)于公式中的計算值,但應不小于1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態(tai)絕緣電(dian)阻(zu)MQ t一-發 熱(re)長度mmT一工(gong)(gong)作(zuo)(zuo)溫度°C
5.絕緣耐(nai)壓強度元件應在規定的試(shi)驗條件和(he)試(shi)驗電壓下保(bao)持1min,而無閃(shan)絡(luo)和(he)擊穿現象
6.經受通(tong)斷電的能力元(yuan)件應能在(zai)規定的試驗(yan)條件下經歷2000次通(tong)斷電試驗(yan),而不發(fa)生損壞