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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="mb83gco" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>通化LH80D6-Y/YV3-54襄樊五二五機械密封,襄樊五二五機械密封</p><p><span>***更新：</span>2021-01-23 01:12:00</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="odskwtf" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">伊格爾博格曼機械密封（張家港）有限公司</a></p><p><span>聯(lián)系人：</span>閆女士</p><p><span>郵箱: </span>eaglebugmann@qq.com</p><p><span>電話: </span>18013293108</p><p><span>傳真: </span>0512_</p><p><span>網(wǎng)址: </span>http://eaglebugmann.com</p><p><span>手機: </span>0512-58756006</p><p><span>地址: </span>德積福民村（天霸路）</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="ml3wyah" class="page-proshow02"><p class="title">詳細說明</p><div id="uodvxzb" class="box"><p><p> 泵用機械密封按結(jié)構(gòu)分類的基本形式有單端面機械密封、雙端面機械密封和串聯(lián)機械密封。由一對密封端面組成的為單端面機械密封；由兩對密封端面組成的為雙端面機械密封；由兩套或兩套以E同向布置單端面機械密封組成的機械密封為串聯(lián)機械密封。下面主要分別說明兩種機械密封的結(jié)構(gòu)特點供了解單端面與雙端面機械密封的區(qū)別。1、單端面機械密封單端面機械密封結(jié)構(gòu)簡單，如圖單端面機械密封結(jié)構(gòu)圖所示，通化LH80D6-Y/YV3-54襄樊五二五機械密封、制造成本低廉，安裝、使用方便，一般用于油、水、有機溶劑及腐蝕性介質(zhì)。通常使用單端面密封的泵類產(chǎn)品有立式單級管道離心泵、臥式離心泵2、雙端面機械密封有壓雙重機械密封(雙端面機械密封)多數(shù)用于易燃、易爆、有毒，通化LH80D6-Y/YV3-54襄樊五二五機械密封、含顆粒及潤滑性差的介質(zhì)，通化LH80D6-Y/YV3-54襄樊五二五機械密封，通常使用時需配備密封輔助系統(tǒng)，即在兩端面間的密封腔中通入隔離流體，從而改善機械密封的潤滑和冷卻條件。使用雙端面機械密封的泵類產(chǎn)品有：氟塑料離心泵或者IH不銹鋼化工泵等3、單端面與雙端面機械密封零件及相應(yīng)術(shù)語密封環(huán)：機械密封中其端面垂直于旋轉(zhuǎn)軸線相互貼合并相對滑動的兩個環(huán)形零件稱密封環(huán)。密封端面：密封環(huán)在工作時與另一個密封環(huán)相貼合的端面。該端面通常是研磨面。旋轉(zhuǎn)環(huán)(動環(huán))：隨軸做旋轉(zhuǎn)運動的密封環(huán)。靜止環(huán)。IH25S200Z襄樊五二五機械密封。通化LH80D6-Y/YV3-54襄樊五二五機械密封</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="通化LH80D6-Y/YV3-54襄樊五二五機械密封,襄樊五二五機械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637351525101474609/8256942.png"></div><p> 對石化行業(yè)來說，高溫重質(zhì)油泵用機械密封的選用一直是一大難題，例如催化裂化油漿泵、回煉油泵、常壓塔底泵、初餾塔底泵、減壓塔底泵、延遲焦化的輻射進料泵等。高溫重質(zhì)油泵的介質(zhì)具有以下共同的特點:溫度高:一般在340一400℃;介質(zhì)粘度大:在溫度下一般運動粘度為(12一180)X10一6m/s;介質(zhì)有顆粒:如催化劑、焦炭、含有砂粒等其他雜質(zhì)。對于高溫重油介質(zhì)泵用機械密封?，F(xiàn)在各個企業(yè)都采用焊接金屬波紋管械密封?，F(xiàn)在使用情況較好的有DBM型、XL-604/606/609型、YH-604/606/609型等。波紋管材料采用八AM350、INCONEL718、哈氏B、C等不銹鋼;耐腐蝕高溫合金等，有的波片采用雙層結(jié)構(gòu)，使其承壓力從2MPa上升到5MPa，這些都有效解決了波紋紋管的失彈問題。針對波紋管內(nèi)側(cè)結(jié)焦和結(jié)炭以及含固體顆粒等情況，解決的辦法有關(guān)資料己做了相關(guān)說明，比如采用蒸汽吹掃、摩擦副采用“硬對硬”、采用外沖洗等等，這些在一定程度上起到了較好的作用，這里不再過多闡述。但是以前提出的各種方法再實際應(yīng)用中由于種種因素的影響效果不夠理想。為了更好的提高機械密封的使用壽命，節(jié)資降耗，針對各種情況，建議應(yīng)把以下措施綜合起來采用:a)將金屬波紋升設(shè)計成旋轉(zhuǎn)型結(jié)構(gòu)。通化LH80D6-Y/YV3-54襄樊五二五機械密封HRM-198S2襄樊五二五機械密封。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="通化LH80D6-Y/YV3-54襄樊五二五機械密封,襄樊五二五機械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637351523881347656/3243862.png"></div><p> 則應(yīng)及時消除e.密封面的比壓過小,不能形成端面密封。消除的辦法為:采取適當措施,如調(diào)節(jié)并緊彈簧、適當增加比壓f.密封圈的密封性不好。造成的原因可能有:V形密封圈本身有缺陷存在;O形密封圈材質(zhì)不好、老化或有傷痕、過盈不夠等;V形密封圈安裝方向不符合要求。消除辦法為:對于ⅴ形密封圈,安裝方向應(yīng)正確,不能搞錯,使其在介質(zhì)的壓力下能脹開并且其質(zhì)量應(yīng)符合要求;對于O形密封圈,其材質(zhì)應(yīng)符合規(guī)定要求,并有適當?shù)倪^盈量g.靜環(huán)或動環(huán)的密封面與軸垂直度誤差太大,密封面不能補償調(diào)整消除的辦法為:應(yīng)使其垂直度誤差符合規(guī)定的技術(shù)要求。h.防止銷端部頂住防轉(zhuǎn)槽。消除的辦法為:應(yīng)使防轉(zhuǎn)銷不頂住防轉(zhuǎn)槽i.彈簧旋向不對或彈簧偏心。消除的辦法為:應(yīng)使彈簀的旋向在軸轉(zhuǎn)動時越旋越緊,消除彈簧偏心或更換彈簧,使其符合要求j.轉(zhuǎn)子振動。根據(jù)振動的原因,有針對性地采取措施以消除轉(zhuǎn)子振動。k.軸套表面上的水垢堆積過多,使動環(huán)不能自由滑動。消除的辦法為:應(yīng)清理軸套上的水垢,使其在軸向能自由移動。l.軸套表面在密封圈部位有軸向溝槽、凹坑等。消除的辦法為:更換或修補軸套,提高其表面光潔度,符合技術(shù)要求。③突然性漏損：不銹鋼耐腐蝕泵在運轉(zhuǎn)中突然泄漏,少數(shù)是因正常磨損或已達到使用壽命。</p><p> 抽空是機械密封的敵人1）泵體振動大，機械密封的動、靜環(huán)會不斷發(fā)生間歇性碰撞，導(dǎo)致泄漏發(fā)生，嚴重時機械密封結(jié)構(gòu)失效；2）機械密封的動靜環(huán)的壓緊是介質(zhì)壓力和彈簧的預(yù)緊力之和，當抽空后，介質(zhì)壓力就會沒有，動靜環(huán)的接觸壓力就會變小，密封失效；3）泵抽空后，采用自沖洗方案（即利用泵送介質(zhì)沖洗）的機械密封動靜環(huán)端面失去了冷卻和潤滑，發(fā)生干摩，機械密封失效。當離心泵發(fā)生抽空，當其發(fā)生時會伴隨以下狀況：①、電機電流下降②、壓力大幅波動③、流量異常波動④、發(fā)出雜音異聲⑤、泵體發(fā)生振動⑥、泵缸溫度升高產(chǎn)生抽空現(xiàn)象原因及對應(yīng)措施：①、原因：離心泵入口處發(fā)生漏氣措施：應(yīng)停泵檢查離心泵的泄漏入口管線及法蘭；②、原因：離心泵入口處發(fā)生堵塞措施：應(yīng)停泵檢查離心泵的泄漏入口管線、過濾網(wǎng)及葉輪，進行吹掃后進行檢修；③、原因：離心泵入口處壓力不夠措施：則應(yīng)提高入口液面背壓；④、原因：離心泵入口處介質(zhì)溫度過高飽和蒸汽過大措施：應(yīng)降低介質(zhì)溫度，將離心泵內(nèi)蒸汽放空排凈；⑤、原因：離心泵入口閥未開或是閥芯脫落措施：應(yīng)打開閥門或換泵后進行檢修；⑥、原因：離心泵出口開度太大（?。┐胧簯?yīng)進行適當調(diào)整各閥開度。襄樊五二五機械密封LC700/900。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="通化LH80D6-Y/YV3-54襄樊五二五機械密封,襄樊五二五機械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637351524899414062/1865921.png"></div><p> 化工泵機械密封安裝技術(shù)要求在化工生產(chǎn)中,脫銷**泵的機械密封材質(zhì)十分關(guān)鍵。由于泵的輸送介質(zhì)的差別,以及結(jié)構(gòu)類型的不同而導(dǎo)致機械密封材質(zhì)的選擇要根據(jù)具體情況來決定。脫銷**泵機械密封的材料選用方式通常情況下十分繁雜,根據(jù)介質(zhì)的不同對動靜環(huán)材質(zhì)的選用也各不相同，而機械密封的安裝也有其技術(shù)要求。脫銷**泵機械密封安裝使用的技術(shù)要求1)機械密封部位的軸或軸套的直徑一般為￠10~50mm時的徑向跳動公差為004mm,當大于中50~120mm時,徑向公差是006毫米。在滿足技術(shù)標準的前提下,軸或軸套的表面粗糙度的外徑公差是h62)傳動軸的軸向竄動量小雨或者等于02毫米。3)軸、軸套的端面和密封腔體的端面需有倒角的存在。一般情況下,軸徑小于Φ30毫米,則是3×10°;而當軸徑大于Φ30mm則是4×10°。4)一旦輸送介質(zhì)由于溫度忽高忽低的問題,或者是夾雜其他雜質(zhì),有毒顆粒,容易發(fā)生自燃和的情況時,就必須緊急采取下列方式來進行解決:過濾、沖洗、冷卻、阻封,等等5)依靠彈簧傳動的機械密封要關(guān)注彈簧的旋向。也就是說,彈簧旋向在密封的條件下應(yīng)該是越來越緊。而彈簧旋向的方式一般是:從靜環(huán)到動環(huán),軸順時針旋轉(zhuǎn)用右旋彈簧,而當其逆時針轉(zhuǎn)用的時候,則應(yīng)該用左旋彈簧。MECP-LK4-100D110ZZ襄樊五二五機械密封。通化LH80D6-Y/YV3-54襄樊五二五機械密封</p><p style="text-indent:25px">襄樊五二五機械密封HTM-55D351。通化LH80D6-Y/YV3-54襄樊五二五機械密封</p><p> 人們在分析機械封泄漏原因時，習(xí)慣在機械封自身方面查找原因，比如：它的選型是否合適，材料選擇是否正確，密封面的比壓是否正確。摩擦副的選擇是否合理，端蓋與軸是否垂直等等，而很少在機械密封的外部條件方面去查找原因，其實機械密封的外因也挺重要的，比如：泵給機械密封創(chuàng)造的條件是否合適，輔助系統(tǒng)的配置是否合適等。一、機械密封的原理及要求機械密封系指兩塊密封元件在其垂直于軸線的光潔而平直的表面上相互貼合，并作相對轉(zhuǎn)動而構(gòu)成的密封裝置，他通常由靜環(huán)、動環(huán)、彈簧加荷裝置（包括推環(huán)，彈簧盒）輔助密封圈（動環(huán)密封圈、靜環(huán)密封圈）等元件組成，防轉(zhuǎn)套里面的防轉(zhuǎn)銷固定在外壓蓋上，以防止靜環(huán)轉(zhuǎn)動。其中動環(huán)和靜環(huán)的端面組成一對摩擦副，動環(huán)靠密封室內(nèi)液體的壓力使其端面壓緊在靜環(huán)端面上，并在兩環(huán)端面上產(chǎn)生適當?shù)谋葔汉捅３忠粚訕O薄的液體膜而達到密封的，因此從結(jié)構(gòu)來看，機械密封主要是將其極易泄漏的軸向密封，改變?yōu)椴灰仔孤┑亩嗣婷芊?，機械密封在實際運行過程中，不是一個單獨的部件，它是與其他的零部件一起組合起來運行的同時通過其基本原理可以看出，機械密封的正常運行必須具備以下條件：（1）泵軸的竄量不能太大；。通化LH80D6-Y/YV3-54襄樊五二五機械密封</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2965007.html</p></div></div></div></div></div><div id="mbda3cz" class="page-right twoColRt"><div id="p8z3z8e" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="o8oiuwi" class="recomPic likePro"><a 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