廣東化工空氣預(yù)熱器來(lái)電咨詢上海板換機(jī)械設(shè)備供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content=" 達(dá)到破壞板片表面鈍化層的腐蝕條件。同時(shí)，由于此區(qū)域板片冷沖壓形成的內(nèi)部應(yīng)力較大，在表面鈍化層被破壞的情況下，內(nèi)部應(yīng)力作用導(dǎo)致應(yīng)力腐蝕的發(fā)生。處理方法：①更換有裂紋或穿孔板片，在現(xiàn)場(chǎng)用透光法查找"><meta name="keywords" content="廣東化工空氣預(yù)熱器,空氣預(yù)熱器"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta 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href="http://www.cdcfah.com/cp/third-crsbje_qtcrsbpw/">其他傳熱設(shè)備</a>?廣東化工空氣預(yù)熱器來(lái)電咨詢上海板換機(jī)械設(shè)備供應(yīng)</p><div id="guw38ea" class="leftbox clearfix"><h1>廣東化工空氣預(yù)熱器來(lái)電咨詢上海板換機(jī)械設(shè)備供應(yīng)</h1><div id="scuedk7" class="proBig"><div id="q8ik8wt" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031093750/2889219.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="sbtlfw7" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031093750/2889219.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="h8vs27d" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>廣東化工空氣預(yù)熱器,空氣預(yù)熱器</p><p><span>***更新：</span>2021-01-10 07:07:18</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="volicda" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海板換機(jī)械設(shè)備有限公司</a></p><p><span>聯(lián)系人：</span>張?jiān)浦?/p><p><span>郵箱: </span>shinfo@shphe.com</p><p><span>電話: </span>15921733465</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.shphe.com</p><p><span>手機(jī): </span>021-57247534</p><p><span>地址: </span>山陽(yáng)鎮(zhèn)山寧路99號(hào)</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="7ryq7g3" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="zxzrgn7" class="box"><p><p> 達(dá)到破壞板片表面鈍化層的腐蝕條件。同時(shí)，由于此區(qū)域板片冷沖壓形成的內(nèi)部應(yīng)力較大，在表面鈍化層被破壞的情況下，內(nèi)部應(yīng)力作用導(dǎo)致應(yīng)力腐蝕的發(fā)生。處理方法：①更換有裂紋或穿孔板片，在現(xiàn)場(chǎng)用透光法查找板片裂紋。②調(diào)整運(yùn)行參數(shù)，使其達(dá)到設(shè)計(jì)條件。③換熱器維修組裝時(shí)夾緊尺寸應(yīng)符合要求，并不是越小越好。④板式換熱器板片材料合理匹配。壓降過(guò)大產(chǎn)生原因：①運(yùn)行系統(tǒng)管路未進(jìn)行正常吹洗，特別是新安裝系統(tǒng)管路中許多臟物（如焊渣等）進(jìn)入板式換熱器的內(nèi)部。由于板式換熱器流道截面積較窄，換熱器內(nèi)的沉淀物和懸浮物聚集在角孔處和導(dǎo)流區(qū)內(nèi)，導(dǎo)致該處的流道面積大為減小，廣東化工空氣預(yù)熱器，造成壓力主要損失在此部位。②板式換熱器選型時(shí)面積偏小，造成板間流速過(guò)高而壓降偏大。③板式換熱器運(yùn)行一段時(shí)間后，因板片表面結(jié)垢引起壓降過(guò)大。實(shí)例：2000年我廠為新疆用戶提供了BR10型板式換熱器，用于水一水換熱的集中供熱系統(tǒng)，一次供水設(shè)計(jì)溫度為130℃。在換熱器設(shè)計(jì)選型時(shí)。傳熱導(dǎo)數(shù)偏高，接近5500w/(rn·K），而實(shí)際應(yīng)在3500w/(rn·K），廣東化工空氣預(yù)熱器。同時(shí)，設(shè)計(jì)單位在水泵選型時(shí)流量余量又偏大，造成換熱器二次側(cè)介質(zhì)板間流速超過(guò)1m/s，廣東化工空氣預(yù)熱器，實(shí)際運(yùn)行壓降在～MPa，使得二次網(wǎng)水力平衡嚴(yán)重失調(diào)。在一些焚燒爐系統(tǒng)中用板式空氣預(yù)熱器提高系統(tǒng)效率。廣東化工空氣預(yù)熱器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東化工空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031093750/2889219.jpg"></div><p> 焊接板式換熱器又分為：半焊接板式換熱器、全焊接板式換熱器、板殼式換熱器、釬焊板式換熱器。經(jīng)常用到的分類還有以下：1根據(jù)單位空間內(nèi)的換熱面積的多少，板式換熱器屬于緊湊式換熱器，主要是與管殼式換熱器進(jìn)行比較，傳統(tǒng)的管殼式換熱器占地較大。2根據(jù)工藝用途，又有不同的叫法：板式加熱器、板式冷卻器、板式冷凝器、板式預(yù)熱器；3根據(jù)流程組合，分為單程板式換熱器和多程板式換熱器。4根據(jù)兩種介質(zhì)的流動(dòng)方向，分為順流（并流）板式換熱器、逆流板式換熱器、交叉流（橫流）板式換熱器，后兩者用的比較多；5按照流道的間隙大小，分為常規(guī)間隙板式換熱器和寬間隙板式換熱器；6按照波紋，板式換熱器有更詳細(xì)的分別，不再累述，請(qǐng)參考：板式換熱器板片波紋形式。7按照是否是成套產(chǎn)品，可分為單機(jī)板式換熱器、板式換熱器機(jī)組。板式換熱器選型計(jì)算編輯板型選擇板片型式或波紋式應(yīng)根據(jù)換熱場(chǎng)合的實(shí)際需要而定。對(duì)流量大允許壓降小的情況，應(yīng)選用阻力小的板型，反之選用阻力大的板型。根據(jù)流體壓力和溫度的情況，確定選擇可拆卸式，還是釬焊式。確定板型時(shí)不宜選擇單板面積太小的板片，以免板片數(shù)量過(guò)多，板間流速偏小，傳熱系數(shù)過(guò)低，對(duì)較大的換熱器更應(yīng)注意這個(gè)問(wèn)題。廣東化工空氣預(yù)熱器板式空氣預(yù)熱器是一種節(jié)能設(shè)備。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東化工空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220412821406250/101176.jpg"></div><p style="text-indent:25px"> 空氣預(yù)熱器就是鍋爐尾部煙道中的煙氣通過(guò)內(nèi)部的散熱片將進(jìn)入鍋爐前的空氣預(yù)熱到一定溫度的受熱面，是一種用于提高鍋爐的熱交換性能，降低能量消耗的設(shè)備。空氣預(yù)熱器一般分為板式、回轉(zhuǎn)式和管式三種。以回轉(zhuǎn)式為例介紹了空氣預(yù)熱器的工作原理。大量未燃盡的可燃物會(huì)沉積在傳熱元件上可能空預(yù)器著火，因此對(duì)其著火原因進(jìn)行了分析，并著火原因及應(yīng)對(duì)措施進(jìn)行了詳細(xì)說(shuō)明；還詳細(xì)介紹了掉閘分析以及漏風(fēng)治理。多用于燃煤電站鍋爐?？煞譃楣芟涫健⒒剞D(zhuǎn)式兩種，其中回轉(zhuǎn)式又分為風(fēng)罩回轉(zhuǎn)式和受熱面回轉(zhuǎn)式兩種。電站鍋爐較常采用受熱面回轉(zhuǎn)式預(yù)熱器。在鍋爐中的應(yīng)用一般為兩分倉(cāng)、三分倉(cāng)、四分倉(cāng)式，其中四分倉(cāng)較常用于循環(huán)流化床鍋爐中。</p><p> 機(jī)械制造行業(yè)的應(yīng)用機(jī)械制造行業(yè)的應(yīng)用換熱器在機(jī)械行業(yè)有著更普遍的應(yīng)用，如各種機(jī)械設(shè)備的潤(rùn)滑油/液壓油/萃火油/乳液冷卻系統(tǒng)，機(jī)器運(yùn)轉(zhuǎn)過(guò)程中，液壓油在頻繁工作后，油溫會(huì)升高，為保證工藝，需將回流液壓油冷卻降溫后循環(huán)使用。此工藝中，對(duì)于換熱器系統(tǒng)波動(dòng)壓力的能力要求高，“面接觸式”波紋截面設(shè)計(jì)，使得換熱器自身抗壓力沖擊的能力增強(qiáng)，集中供暖應(yīng)用領(lǐng)域解決方案集中供暖應(yīng)用領(lǐng)域解決方案集中供熱領(lǐng)域，熱能有大型熱源廠通過(guò)一次側(cè)管網(wǎng)將熱源輸送至各供暖區(qū)域的熱交換機(jī)組，一次介質(zhì)在熱交換機(jī)組處將熱能傳遞給二次側(cè)介質(zhì)并降溫后返回?zé)嵩磸S。二次側(cè)介質(zhì)在熱交換機(jī)組取得熱能后根據(jù)需要調(diào)整壓力和溫度后，由機(jī)組的二次循環(huán)泵驅(qū)動(dòng)，通過(guò)二次側(cè)管網(wǎng)將熱能輸送至終端用戶。化工噴涂行業(yè)換熱器應(yīng)用領(lǐng)域化工噴涂行業(yè)換熱器應(yīng)用領(lǐng)域噴涂工藝目前應(yīng)用于各大行業(yè)，比如家具、汽車制造、金屬制品加工等。噴涂工藝使用的涂料中大多含有揮發(fā)份和不揮發(fā)份組分，不揮發(fā)份包括成膜物質(zhì)和輔助成膜物質(zhì)，揮發(fā)份指溶劑和稀釋劑（主要以二甲苯為主）。噴涂工藝產(chǎn)生的揮發(fā)性有機(jī)廢氣VOCs大多來(lái)自溶劑和稀釋劑的揮發(fā)。板式空氣預(yù)熱器是一種電力工業(yè)經(jīng)常使用的節(jié)能、環(huán)保設(shè)備。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東化工空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220415160732422/6470394.jpg"></div><p> 與水媒式暖風(fēng)器組成閉式循環(huán)系統(tǒng)?？諝忸A(yù)熱器進(jìn)風(fēng)溫度的提高使排煙溫度升高，一方面使前置煙冷器傳熱溫差增加，更有效回收低溫?zé)煔庥酂?；另一方面則較大幅度提升空氣預(yù)熱器的冷端綜合溫度，有效緩解空氣預(yù)熱器***氫銨堵塞和腐蝕；同時(shí)mggh煙氣冷卻器入口煙溫的提高減少了mggh系統(tǒng)的蒸汽消耗量，降低機(jī)組供電煤耗。本實(shí)用新型的更優(yōu)技術(shù)方案為：所述蒸汽暖風(fēng)器的進(jìn)口上連接有蒸汽管，且其出口上連接有疏水管。所述蒸汽管上安裝有電動(dòng)調(diào)節(jié)閥，疏水管上安裝有疏水閘閥；通過(guò)蒸汽暖風(fēng)器對(duì)冷空氣做初步加熱。所述前置煙冷器的進(jìn)水母管上安裝有循環(huán)水泵，為前置煙冷器和水媒式暖風(fēng)器之間的交換水循環(huán)運(yùn)行提供動(dòng)力。所述前置煙冷器出口的煙道內(nèi)沿?zé)煔饬鲃?dòng)方向依次安裝有mggh煙氣冷卻器、電除塵器、引風(fēng)機(jī)、吸收塔、煙氣再熱器和煙囪；且煙氣再熱器和mggh煙氣冷卻器之間連接有熱媒加熱器和安裝循環(huán)水泵的管道，實(shí)現(xiàn)mggh系統(tǒng)的運(yùn)行。板式空氣預(yù)熱器是一種煉**業(yè)經(jīng)常使用的節(jié)能、環(huán)保設(shè)備。吉林供暖空氣預(yù)熱器</p><p style="text-indent:25px">專業(yè)板式空氣預(yù)熱器廠家。廣東化工空氣預(yù)熱器</p><p> 在選擇傳熱元件時(shí)，要考慮到用戶的實(shí)際情況，從設(shè)備長(zhǎng)期安全穩(wěn)定運(yùn)行的角度出發(fā)，適應(yīng)煤種在一定范圍內(nèi)的變化，確保在使用過(guò)程中不堵灰，保持較低的排煙溫度，保證在長(zhǎng)時(shí)間的運(yùn)行過(guò)程中，鍋爐的效率保持在較高水平。而不能*考慮單一設(shè)計(jì)煤種，在燃料變化后，無(wú)法滿足機(jī)組經(jīng)濟(jì)、穩(wěn)定和安全運(yùn)行的需要。元件板型的選擇需同時(shí)考慮傳熱效果、流通阻力和堵灰可能三個(gè)因素。采用傳熱效果好的傳熱元件能降**造成本，但是不一定流通阻力小或耐堵灰，造成運(yùn)行成本上升。例如某公司在預(yù)熱器冷段采用HS7、HS8等DU系列波形元件，雖然預(yù)熱器轉(zhuǎn)子重量變輕，但是當(dāng)燃料灰分變多，或用于SCR預(yù)熱器時(shí)，很容易造成堵灰，使阻力上升。傳熱效果和流通阻力往往構(gòu)成一對(duì)矛盾，因?yàn)樘岣邠Q熱效果是通過(guò)加強(qiáng)氣流通道的局部紊流狀況，即加大換熱表面波紋密度或傾斜角，但這種方式也同時(shí)加大了流通阻力系數(shù)。廣東化工空氣預(yù)熱器</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2783899.html</p></div></div></div></div></div><div id="mvczrda" class="page-right twoColRt"><div id="poaceb7" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="i2iqnzb" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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