專業板式換熱機組如果出現堵塞和結構的情況,會使傳熱設備的傳熱系數降低,嚴重時還會失去換熱效果。針對此問題,小編對它們做出了簡單說明,并給出相應的解決方法:板式換熱器的流道間隙較小(2.5~6mm),直徑大于1.5~3mm的顆粒雜物容易阻塞板片通道,使板式換熱機組設備的壓力降急劇(ju)惡化(hua),導致設備因堵(du)塞(sai)(sai)而失效。根(gen)據需要可在介質入口處(chu)設置(zhi)粗過濾或反沖洗裝(zhuang)置(zhi),能防止設備的堵(du)塞(sai)(sai)。結垢會堵(du)塞(sai)(sai)板片通道。流體力學觀(guan)點認為(wei)。
管殼式波紋管換熱器zui突出的優點是可以迫使流體按規定路徑多次錯流通過管束,使流體的湍流程度持續得到強化,其主要特點如下。1、傳熱效率高。由于板式換熱機組設備采用波紋管,管內流道截面連續不斷地突變,造成流體即使在流速很低的情況下也始終處于高度湍流狀態,難以形成層流,使對流傳熱的主要熱阻被有效地克服,專業板式換熱機組內(nei)外傳(chuan)熱被(bei)同時強化,因而傳(chuan)熱系數很高,一般(ban)為傳(chuan)統管殼式換熱器的2~3倍(bei)。
板式換熱器是一種清洗和檢修時較方便的換熱裝置,因其結構緊湊、容易裝拆的優勢。設備由很多種部件組成,下面來說說其中的重要部件以及它們在換熱器中所起到的作用。1.前支柱:支承專業板式換熱機組重量,使整臺板式換熱器成為一體。2.活動壓緊板:與固定壓緊板配對使用,可在上導桿上滑動,以便拆裝檢查維修。3.上下導桿:承受板式換熱機組設備的重量(liang),并保(bao)證安(an)裝時使(shi)板片在其間滑(hua)(hua)動,導桿通常比換熱板組(zu)長,以(yi)便松開壓緊(jin)螺栓滑(hua)(hua)動各板檢查(cha)。
按照板式換熱機組的工藝用途來分(fen)(fen)的話主要就是(shi)分(fen)(fen)為(wei):板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)(shi)(shi)加熱(re)(re)器(qi)(qi)(qi)、板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)(shi)(shi)冷卻器(qi)(qi)(qi)、板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)(shi)(shi)冷凝器(qi)(qi)(qi)、板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)(shi)(shi)預熱(re)(re)器(qi)(qi)(qi)。根(gen)據(ju)組合流(liu)程(cheng)來看是(shi)分(fen)(fen)為(wei):單程(cheng)板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)和多程(cheng)板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)。當然了我們還可(ke)(ke)以根(gen)據(ju)兩種介質(zhi)的流(liu)動方向可(ke)(ke)以分(fen)(fen)為(wei):順流(liu)板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)、逆(ni)流(liu)板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)、交叉流(liu)板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)。如果按(an)照(zhao)流(liu)道的堿洗(xi)的大(da)小來分(fen)(fen)的話就可(ke)(ke)以分(fen)(fen)為(wei)常規間隙板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)和寬間隙板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)了。
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