防爆(bao)(bao)加(jia)熱(re)(re)(re)(re)(re)(re)(re)管(guan)是一種消耗電能轉(zhuan)換為熱(re)(re)(re)(re)(re)(re)(re)能,來對(dui)需加(jia)熱(re)(re)(re)(re)(re)(re)(re)物(wu)料進行加(jia)熱(re)(re)(re)(re)(re)(re)(re)。防爆(bao)(bao)加(jia)熱(re)(re)(re)(re)(re)(re)(re)管(guan)是由外(wai)(wai)到里(li)外(wai)(wai)殼(不繡(xiu)(xiu)鋼/碳(tan)鋼/銅/鈦材等(deng)、發熱(re)(re)(re)(re)(re)(re)(re)絲(si)(鎳(nie)鉻鉛合金)、填充物(wu)(氧化鎂,作(zuo)(zuo)用(yong)是導熱(re)(re)(re)(re)(re)(re)(re)、絕緣)、外(wai)(wai)殼(不繡(xiu)(xiu)鋼、碳(tan)鋼、鈦材、銅 等(deng))、陶瓷封頭(作(zuo)(zuo)用(yong):絕緣)、防爆(bao)(bao)盒組(zu)成的。加(jia)熱(re)(re)(re)(re)(re)(re)(re)管(guan)在工(gong)作(zuo)(zuo)中(zhong)低溫(wen)流(liu)體(ti)介(jie)質通過管(guan)道在壓力作(zuo)(zuo)用(yong)下進入其輸入口(kou),沿著電加(jia)熱(re)(re)(re)(re)(re)(re)(re)容(rong)器內(nei)部特(te)定(ding)換熱(re)(re)(re)(re)(re)(re)(re)流(liu)道,運用(yong)空(kong)氣(qi)電熱(re)(re)(re)(re)(re)(re)(re)管(guan)的流(liu)體(ti)熱(re)(re)(re)(re)(re)(re)(re)力學原理設計的路徑(jing),帶走空(kong)氣(qi)加(jia)熱(re)(re)(re)(re)(re)(re)(re)管(guan)中(zhong)的電熱(re)(re)(re)(re)(re)(re)(re)元(yuan)件(jian)工(gong)作(zuo)(zuo)中(zhong)所產生的高溫(wen)熱(re)(re)(re)(re)(re)(re)(re)能量,使空(kong)氣(qi)加(jia)熱(re)(re)(re)(re)(re)(re)(re)管(guan)被加(jia)熱(re)(re)(re)(re)(re)(re)(re)介(jie)質溫(wen)度升(sheng)高,加(jia)熱(re)(re)(re)(re)(re)(re)(re)管(guan)出口(kou)得到工(gong)藝要求的高溫(wen)介(jie)質。
產品(pin)特點
1.升溫時(shi)間在試驗電壓下,元件從環境溫度(du)升至試驗溫度(du)時(shi)間應不大于15min
2.額(e)(e)定(ding)功(gong)(gong)率(lv)(lv)偏差在充分(fen)發熱的條(tiao)件(jian)下,元件(jian)的額(e)(e)定(ding)功(gong)(gong)率(lv)(lv)的偏差應不超過下列規定(ding)的范圍;對額(e)(e)定(ding)功(gong)(gong)率(lv)(lv)小于等于100W的元件(jian)為:士10%。對額(e)(e)定(ding)功(gong)(gong)率(lv)(lv)大(da)于100W的元件(jian)為+5%~- 10%或10W,取(qu)兩者中的較大(da)值。
3.泄露電(dian)(dian)流(liu)冷態(tai)泄露電(dian)(dian)流(liu)以及水壓和(he)密封(feng)試驗后(hou)泄露電(dian)(dian)流(liu)應不(bu)超過0.5mA工作(zuo)溫度(du)(du)下的(de)熱(re)態(tai)泄露電(dian)(dian)流(liu)應不(bu)超過公式(shi)中的(de)計算值,但(dan)不(bu)超過5mA I=1/6 (tTX0.00001) I一(yi) 熱(re)態(tai)泄露電(dian)(dian)流(liu)mA t-發熱(re)長度(du)(du)mm T-工作(zuo)溫度(du)(du)C多個元件(jian)串聯到電(dian)(dian)源中時,應以這一(yi)組元件(jian)為 整體進行泄露電(dian)(dian)流(liu)試驗。
4. 絕(jue)(jue)緣(yuan)電(dian)阻出廠檢驗時(shi)冷(leng)態絕(jue)(jue)緣(yuan)電(dian)阻應(ying)不小于(yu)50MQ密(mi)封試驗后(hou)(hou),長期存放或者使用后(hou)(hou)的絕(jue)(jue)緣(yuan)電(dian)阻應(ying)不消(xiao)與MQ工作溫度下的熱(re)態絕(jue)(jue)緣(yuan)電(dian)阻應(ying)不低于(yu)公式中的計算值,但應(ying)不小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態絕(jue)(jue)緣(yuan)電(dian)阻MQ t一(yi)-發 熱(re)長度mmT一(yi)工作溫度°C
5.絕緣(yuan)耐(nai)壓強度(du)元件(jian)應在規定的(de)試驗(yan)條件(jian)和試驗(yan)電壓下(xia)保持(chi)1min,而無閃絡和擊穿現象
6.經(jing)受(shou)通斷(duan)電的能力元件應(ying)能在規定的試(shi)驗(yan)條件下(xia)經(jing)歷2000次通斷(duan)電試(shi)驗(yan),而不發(fa)生損壞