— 技術文章 —
NEWS CENTRES作者:中輝電器 來源:www.shenzhentuliao.cn 發布(bu)時(shi)間:2019/4/30 16:29:26
電(dian)壓340--350,電(dian)流65--68,加熱(re)作用太慢(man)。有什么好辦(ban)法提(ti)高電(dian)壓嗎?
1、160KW的(de)(de)變壓(ya)器用了(le)125A的(de)(de)電(dian)(dian)流,那么也就是只(zhi)用了(le)近1半(ban)的(de)(de)負(fu)載罷了(le),這個(ge)情況電(dian)(dian)壓(ya)由410V~415V降到340V~350V這是不正常(chang)(chang)的(de)(de),從數據上看您這邊的(de)(de)供電(dian)(dian)網還(huan)是非常(chang)(chang)不錯的(de)(de),這里要是線路太(tai)長(chang),線損太(tai)大引起。
2、可以用電(dian)容補(bu)償(chang)嗎?工(gong)業上高壓電(dian)容補(bu)償(chang),這要(yao)是針對變(bian)壓器(qi)(qi)功(gong)(gong)率因數太低(補(bu)償(chang)前(qian)只有(you)0.8左右),如(ru)果(guo)您的(de)(de)變(bian)壓器(qi)(qi)之前(qian)沒有(you)做無功(gong)(gong)補(bu)償(chang),那么這還是有(you)作用的(de)(de),并且也(ye)定要(yao)補(bu)償(chang),不(bu)然(ran)電(dian)力公司檢(jian)測出(chu)來(lai)會被罰款(kuan)的(de)(de),但如(ru)1剖(pou)析(xi),您這邊要(yao)不(bu)是功(gong)(gong)率因數低造(zao)成(cheng),所(suo)以對于電(dian)壓的(de)(de)上升作用不(bu)大。
3、50kw電磁加熱器電流卻只有(you)65A~68A,依照這個(ge)參數(shu)核(he)算這臺控制器連50KW都達不(bu)到,或許您被騙了,隨(sui)著(zhu)電磁加熱器行業的競爭劇烈,有(you)非(fei)常多不(bu)法的商家經常用(yong)小(xiao)功率(lv)產(chan)品假(jia)充大(da)功率(lv)產(chan)品再以(yi)相對較低(di)的價格進行販賣,如用(yong)40KW超載運(yun)用(yong)假(jia)充50KW甚至60KW再以(yi)比商場正常50KW或許60KW的價了解到的數(shu)據。
電磁加熱器(qi)的(de)全橋和半(ban)橋的(de)穩定(ding)性的(de)異同:
、相同:在(zai)技術設計處理完善的(de)情況下,均可(ke)達到(dao)較理想的(de)運(yun)作穩定性。
二、元件損耗上(shang)不(bu)同:
1、全橋:各元件(jian)負擔較合(he)理,損耗比較小,壽命較長(chang)。
2、半橋:各(ge)元(yuan)件負擔較重,損耗比相對較大,壽命(ming)相對合(he)理(li)。
三、故障率上:
1、全橋:保護電路設計(ji)較復雜,周全,維修率較低。
2、半橋(qiao):保護電(dian)路(lu)設計較(jiao)簡化,維(wei)修率(lv)(小(xiao)元件)相(xiang)對較(jiao)高。
此外,挑選線(xian)(xian)(xian)圈時(shi)(shi),還要(yao)(yao)考(kao)慮其(qi)(qi)(qi)線(xian)(xian)(xian)徑,材質(zhi),耐溫耐壓性(xing)能(neng)(neng)等(deng)。這些也都(dou)是(shi)(shi)由其(qi)(qi)(qi)使(shi)(shi)用(yong)(yong)(yong)(yong)(yong)條件(jian)(jian)決定(ding)的(de)(de)(de)(de)。在實際選配(pei)過程中,先要(yao)(yao)根據加(jia)(jia)熱需求確(que)定(ding)所(suo)需設備功(gong)率(lv),然后(hou)就可(ke)以(yi)(yi)知道其(qi)(qi)(qi)輸(shu)出(chu)電(dian)(dian)(dian)流值,進而確(que)定(ding)線(xian)(xian)(xian)徑、材質(zhi),然后(hou)視現(xian)場(chang)(chang)的(de)(de)(de)(de)溫度情(qing)(qing)況(kuang),散熱情(qing)(qing)況(kuang)等(deng)考(kao)慮其(qi)(qi)(qi)耐溫性(xing)能(neng)(neng)。如果(guo)挑選線(xian)(xian)(xian)圈時(shi)(shi)沒(mei)有考(kao)慮到這些因素,就很(hen)容易(yi)出(chu)現(xian)設備故(gu)障,例(li)如線(xian)(xian)(xian)圈被燒(shao)壞,加(jia)(jia)熱效率(lv)低下,線(xian)(xian)(xian)圈不(bu)(bu)耐用(yong)(yong)(yong)(yong)(yong)等(deng)問題。輕則(ze)(ze)影響生產,重則(ze)(ze)造(zao)成人身事(shi)故(gu)。二線(xian)(xian)(xian)圈繞制(zhi):表(biao)面(mian)看來,線(xian)(xian)(xian)圈繞制(zhi)這工作(zuo)似(si)乎是(shi)(shi)沒(mei)技(ji)術含量的(de)(de)(de)(de),不(bu)(bu)就是(shi)(shi)把線(xian)(xian)(xian)材繞下組成個線(xian)(xian)(xian)圈嘛,這誰不(bu)(bu)會(hui)?但實際上并沒(mei)有那么簡單(dan),線(xian)(xian)(xian)圈的(de)(de)(de)(de)繞制(zhi)需要(yao)(yao)考(kao)慮到疊加(jia)(jia)、干擾、散熱、距離(li)、感(gan)(gan)量匹配(pei)等(deng)因素。不(bu)(bu)同功(gong)率(lv)的(de)(de)(de)(de)電(dian)(dian)(dian)磁(ci)加(jia)(jia)熱器其(qi)(qi)(qi)所(suo)需要(yao)(yao)的(de)(de)(de)(de)線(xian)(xian)(xian)圈電(dian)(dian)(dian)感(gan)(gan)量是(shi)(shi)不(bu)(bu)樣的(de)(de)(de)(de),只有實際電(dian)(dian)(dian)感(gan)(gan)量和(he)理(li)(li)論(lun)值直,才(cai)能(neng)(neng)保證電(dian)(dian)(dian)磁(ci)加(jia)(jia)熱器的(de)(de)(de)(de)功(gong)率(lv)大化。例(li)如,臺30KW的(de)(de)(de)(de)電(dian)(dian)(dian)磁(ci)加(jia)(jia)熱器,其(qi)(qi)(qi)理(li)(li)論(lun)電(dian)(dian)(dian)感(gan)(gan)量是(shi)(shi)240μH,線(xian)(xian)(xian)圈繞制(zhi)時(shi)(shi),只有實際感(gan)(gan)量為(wei)240μH,其(qi)(qi)(qi)功(gong)率(lv)才(cai)有可(ke)能(neng)(neng)完全達(da)到。如果(guo)實際感(gan)(gan)量是(shi)(shi)100μH、150μH、300μH、400μH,那其(qi)(qi)(qi)這臺設備的(de)(de)(de)(de)實際使(shi)(shi)用(yong)(yong)(yong)(yong)(yong)功(gong)率(lv)可(ke)能(neng)(neng)就只有20KW,15KW,甚至根本啟動不(bu)(bu)了(le)(le)。三(san)適(shi)用(yong)(yong)(yong)(yong)(yong)見(jian)場(chang)(chang):電(dian)(dian)(dian)磁(ci)加(jia)(jia)熱器的(de)(de)(de)(de)廣泛應用(yong)(yong)(yong)(yong)(yong)性(xing)決定(ding)了(le)(le)其(qi)(qi)(qi)現(xian)場(chang)(chang)使(shi)(shi)用(yong)(yong)(yong)(yong)(yong)情(qing)(qing)況(kuang)的(de)(de)(de)(de)復雜。在電(dian)(dian)(dian)磁(ci)加(jia)(jia)熱器眾多(duo)的(de)(de)(de)(de)使(shi)(shi)用(yong)(yong)(yong)(yong)(yong)域(yu)中,食品(pin)、塑料、化工、印(yin)刷、供暖、垃(la)圾處理(li)(li),每個行業的(de)(de)(de)(de)應用(yong)(yong)(yong)(yong)(yong)場(chang)(chang)景都(dou)不(bu)(bu)同,就是(shi)(shi)同個行業中,每個客戶的(de)(de)(de)(de)使(shi)(shi)用(yong)(yong)(yong)(yong)(yong)現(xian)場(chang)(chang)也有很(hen)大的(de)(de)(de)(de)差別。所(suo)以(yi)(yi),電(dian)(dian)(dian)磁(ci)線(xian)(xian)(xian)圈不(bu)(bu)具(ju)有普(pu)遍適(shi)用(yong)(yong)(yong)(yong)(yong)性(xing),是(shi)(shi)種不(bu)(bu)同使(shi)(shi)用(yong)(yong)(yong)(yong)(yong)場(chang)(chang)景有不(bu)(bu)同繞法的(de)(de)(de)(de)非標配(pei)件(jian)(jian)。
電(dian)磁加熱(re)器的質量是由什(shen)么決(jue)定(ding)呢(ni):
、重要元(yuan)器件的(de)選擇。電磁加熱控制(zhi)器功率部分(fen)核心元(yuan)器件是IGBT模塊,IGBT的(de)優(you)劣直(zhi)接(jie)影響到機器壽命長短,建議直(zhi)接(jie)從國內代理商那(nei)進貨,否(fou)則(ze)買到高仿或者翻新的(de)IGBT模塊仍然(ran)會(hui)出現質量問題。
二、主(zhu)板(ban)的(de)(de)選擇(ze)。電磁加熱(re)控(kong)制器(qi)(qi)的(de)(de)主(zhu)板(ban)分為三部分,電源(yuan)板(ban)、信(xin)號(hao)板(ban)和(he)驅動板(ban),要想(xiang)保證機器(qi)(qi)長時間穩定(ding)工作,主(zhu)板(ban)要有各種保護:過載、過流和(he)過熱(re),電磁加熱(re)器(qi)(qi)應用現場(chang)(chang)環境很(hen)復雜,比如干擾(rao)等,旦(dan)出現非(fei)正常(chang)情況,主(zhu)板(ban)應該能很(hen)快(kuai)反應并(bing)保護機器(qi)(qi),防(fang)止(zhi)非(fei)正常(chang)因素損壞(huai)機器(qi)(qi),特(te)別是IGBT。目前市場(chang)(chang)上很(hen)多所謂的(de)(de)電磁加熱(re)器(qi)(qi)廠家的(de)(de)主(zhu)板(ban)并(bing)不是自己(ji)開發的(de)(de),而是直(zhi)接購買的(de)(de),然后自己(ji)組裝的(de)(de),般出現問(wen)題,就直(zhi)接讓客戶換(huan)主(zhu)板(ban),并(bing)不能發現問(wen)題的(de)(de)根源(yuan)所在。
三、高(gao)(gao)溫(wen)(wen)線的(de)(de)(de)(de)(de)(de)選擇。高(gao)(gao)溫(wen)(wen)線是很多客戶容易忽(hu)視的(de)(de)(de)(de)(de)(de)個(ge)問題,目前(qian)市場上(shang)(shang)(shang)國標(biao)的(de)(de)(de)(de)(de)(de)高(gao)(gao)溫(wen)(wen)線很難買到(dao),不要相信商家的(de)(de)(de)(de)(de)(de)所(suo)說的(de)(de)(de)(de)(de)(de),定(ding)睜大(da)眼睛,不要嫌麻煩,從重量和材質(zhi)上(shang)(shang)(shang)鑒(jian)定(ding)下(xia)是否是國標(biao)高(gao)(gao)溫(wen)(wen)線,如(ru)果(guo)用到(dao)非標(biao)高(gao)(gao)溫(wen)(wen)線,不僅(jin)僅(jin)影(ying)(ying)響機(ji)器(qi)(qi)(qi)壽(shou)命,還會影(ying)(ying)響整機(ji)的(de)(de)(de)(de)(de)(de)效率,大(da)家應該重視這個(ge)問題。四經驗(yan)的(de)(de)(de)(de)(de)(de)差(cha)別。電(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)熱(re)(re)器(qi)(qi)(qi)安(an)(an)裝(zhuang)(zhuang)的(de)(de)(de)(de)(de)(de)好(hao),和安(an)(an)裝(zhuang)(zhuang)的(de)(de)(de)(de)(de)(de)不好(hao)效果(guo)是很大(da)區(qu)別,這點需(xu)要豐富的(de)(de)(de)(de)(de)(de)安(an)(an)裝(zhuang)(zhuang)實(shi)例(li),光靠(kao)幾(ji)組數據是分(fen)析不出來的(de)(de)(de)(de)(de)(de),根本(ben)沒有(you)這樣的(de)(de)(de)(de)(de)(de)經驗(yan)來支撐(cheng),完全靠(kao)理論(lun)在安(an)(an)裝(zhuang)(zhuang)。人(ren)家說臺同型號的(de)(de)(de)(de)(de)(de)電(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)熱(re)(re)器(qi)(qi)(qi),裝(zhuang)(zhuang)在同型號的(de)(de)(de)(de)(de)(de)注塑機(ji)上(shang)(shang)(shang),為什么個(ge)省電(dian)(dian)40%以上(shang)(shang)(shang),個(ge)剛剛夠理論(lun)數據的(de)(de)(de)(de)(de)(de)30%,這個(ge)不僅(jin)是機(ji)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)差(cha)異,電(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)熱(re)(re)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)安(an)(an)裝(zhuang)(zhuang)位(wei)置(zhi),線圈長短(duan)都有(you)影(ying)(ying)響,如(ru)果(guo)是采用多組小功率的(de)(de)(de)(de)(de)(de)電(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)熱(re)(re)器(qi)(qi)(qi),這個(ge)差(cha)異就更為明顯。電(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)熱(re)(re)行(xing)業(ye)有(you)個(ge)測試(shi)機(ji)器(qi)(qi)(qi)是否裝(zhuang)(zhuang)好(hao)的(de)(de)(de)(de)(de)(de)方法,就是讓電(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)熱(re)(re)器(qi)(qi)(qi)工作2分(fen)鐘左(zuo)右(you),休息1分(fen)鐘左(zuo)右(you)。
電(dian)磁(ci)加熱(re)板的配件有哪些?2P排線、10K熱(re)敏(min)電(dian)阻、吸(xi)收(shou)板1塊(kuai)、風扇線、顯示盒、530V電(dian)源線(帶磁(ci)環)、高(gao)頻互感器。
電磁(ci)加熱器(qi)用(yong)(yong)于油氣管(guan)道應用(yong)(yong)的特點:
1、熱效高:節能電(dian)磁(ci)加熱器不需要(yao)預熱管道。
2、不破壞管(guan)道保溫層:由于是感應節(jie)能電磁加熱(re),磁力線能穿(chuan)透保溫層,改造管(guan)單。
3、安(an)全性高:無明火,無熱輻射(she),溫度(du)可控。
4、操作方便:在管(guan)道上纏上電磁線圈,做好溫(wen)度控溫(wen)探(tan)頭,調(diao)節控溫(wen)系統,開機調(diao)節即可自控加(jia)熱恒溫(wen)。
電(dian)(dian)磁(ci)(ci)加(jia)熱(re)(re)(re)(re)器(qi)用(yong)(yong)風(feng)冷(leng)(leng)(leng)的(de)好還(huan)是(shi)水(shui)冷(leng)(leng)(leng)的(de)好?現今工(gong)業域和民用(yong)(yong)設備中(zhong)(zhong)(zhong)較廣泛的(de)種(zhong)加(jia)熱(re)(re)(re)(re)方(fang)式,主要(yao)是(shi)采用(yong)(yong)電(dian)(dian)磁(ci)(ci)加(jia)熱(re)(re)(re)(re)技(ji)術,在使用(yong)(yong)電(dian)(dian)磁(ci)(ci)加(jia)熱(re)(re)(re)(re)器(qi)中(zhong)(zhong)(zhong)用(yong)(yong)戶都關心的(de)電(dian)(dian)磁(ci)(ci)加(jia)熱(re)(re)(re)(re)器(qi)是(shi)水(shui)冷(leng)(leng)(leng)好還(huan)是(shi)風(feng)冷(leng)(leng)(leng)好呢?電(dian)(dian)磁(ci)(ci)加(jia)熱(re)(re)(re)(re)器(qi)作(zuo)業段(duan)時間(jian)后,控(kong)制(zhi)(zhi)面板(ban)是(shi)會發(fa)熱(re)(re)(re)(re)發(fa)燙的(de),所(suo)以(yi)就需要(yao)對控(kong)制(zhi)(zhi)板(ban)進行降溫處理(li),避(bi)免(mian)由于控(kong)制(zhi)(zhi)板(ban)溫度過(guo)高,自身(shen)過(guo)熱(re)(re)(re)(re)保護(hu)致使電(dian)(dian)磁(ci)(ci)加(jia)熱(re)(re)(re)(re)器(qi)中(zhong)(zhong)(zhong)止加(jia)熱(re)(re)(re)(re)作(zuo)業。通(tong)常對控(kong)制(zhi)(zhi)板(ban)降溫處理(li)方(fang)法有兩種(zhong),種(zhong)是(shi)風(feng)冷(leng)(leng)(leng)的(de),另(ling)種(zhong)是(shi)水(shui)冷(leng)(leng)(leng)的(de)。對于風(feng)冷(leng)(leng)(leng)和水(shui)冷(leng)(leng)(leng)的(de)電(dian)(dian)磁(ci)(ci)加(jia)熱(re)(re)(re)(re)器(qi)哪個好就要(yao)依據場合、氣候、環境(jing)而論。
電磁加熱控(kong)制器怎么安(an)裝?
1、改造前先取下原設備上面的電熱圈。
2、清潔料(liao)筒并測量料(liao)筒各(ge)種參(can)數(shu)(shu)。將料(liao)筒清潔干(gan)凈(jing)并用工具測量料(liao)筒各(ge)種尺寸(cun)(管徑、長(chang)度、加熱(re)區數(shu)(shu)、每區加熱(re)長(chang)度、原功率(lv)大(da)小(xiao),以(yi)便確定用哪種控制板)。
3、在料筒(tong)(tong)(tong)上包層隔熱(re)保溫材料,按照步驟2將料筒(tong)(tong)(tong)清潔干凈后,在料筒(tong)(tong)(tong)上包上層隔熱(re)保溫材料(石棉或者玻(bo)璃纖維(wei)均可),可以先做區,區做好(hao)后,再做其它區,熟練(lian)且經驗豐(feng)富(fu)者可幾個加(jia)熱(re)區起做 。
4、用高溫(wen)(wen)布將保溫(wen)(wen)材(cai)料(liao)包(bao)好(hao),保溫(wen)(wen)材(cai)料(liao)的(de)厚度根據使(shi)用的(de)不同(tong)的(de)電磁(ci)加(jia)熱控(kong)制器的(de)要求(qiu)來配,保溫(wen)(wen)材(cai)料(liao)包(bao)好(hao)后,再用高溫(wen)(wen)布(纖維布)或者電木板(環氧樹脂板)將保溫(wen)(wen)材(cai)料(liao)包(bao)緊起來,該步驟主(zhu)要是確(que)保料(liao)筒各處的(de)保溫(wen)(wen)材(cai)料(liao)厚度致,以(yi)保證電磁(ci)加(jia)熱的(de)磁(ci)場均。
5、纏繞高溫電纜(lan),高溫電纜(lan)的(de)規格與長度請根(gen)據各種不同型號電磁加熱控制器的(de)要(yao)求選配,該(gai)步驟非常關鍵。
6、將(jiang)線(xian)圈(quan)(quan)(quan)與(yu)電(dian)(dian)(dian)(dian)磁(ci)(ci)加熱控(kong)(kong)(kong)(kong)制(zhi)(zhi)器(qi)連接。則將(jiang)繞(rao)好的(de)(de)線(xian)圈(quan)(quan)(quan)與(yu)電(dian)(dian)(dian)(dian)磁(ci)(ci)加熱控(kong)(kong)(kong)(kong)制(zhi)(zhi)器(qi)連接好,并給電(dian)(dian)(dian)(dian)磁(ci)(ci)加熱控(kong)(kong)(kong)(kong)制(zhi)(zhi)器(qi)接上電(dian)(dian)(dian)(dian)源,即可對設備(bei)進行調(diao)試,需(xu)注(zhu)意的(de)(de)是(shi)調(diao)試過程(cheng)中要(yao)特別注(zhu)意測量電(dian)(dian)(dian)(dian)磁(ci)(ci)加熱控(kong)(kong)(kong)(kong)制(zhi)(zhi)器(qi)的(de)(de)輸入電(dian)(dian)(dian)(dian)流(liu)與(yu)頻(pin)率。為保(bao)證設備(bei)的(de)(de)使用壽命建議電(dian)(dian)(dian)(dian)流(liu)調(diao)到額定(ding)工作(zuo)電(dian)(dian)(dian)(dian)流(liu)的(de)(de)80%左(zuo)(zuo)右,如(ru)我司2.5KW的(de)(de)電(dian)(dian)(dian)(dian)磁(ci)(ci)加熱控(kong)(kong)(kong)(kong)制(zhi)(zhi)板(ban),額定(ding)工作(zuo)電(dian)(dian)(dian)(dian)流(liu)是(shi)12A,則建議調(diao)到10A左(zuo)(zuo)右即可,或電(dian)(dian)(dian)(dian)流(liu)偏小則可減(jian)少線(xian)圈(quan)(quan)(quan),反之則需(xu)再(zai)增加些線(xian)圈(quan)(quan)(quan)。
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