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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>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>南通容積泵密封廠家供應(yīng),封</p><p><span>***更新：</span>2020-08-21 09:08:53</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="d8wkaht" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">漣水創(chuàng)密機(jī)械制造有限公司</a></p><p><span>聯(lián)系人：</span>袁經(jīng)理</p><p><span>郵箱: </span>lscmjx@163.com</p><p><span>電話: </span>15250888877</p><p><span>傳真: </span>153_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>153-66621921</p><p><span>地址: </span>高溝鎮(zhèn)高揚(yáng)民營(yíng)經(jīng)濟(jì)產(chǎn)業(yè)園</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="ibioulx" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="hu27kbm" class="box"><p><p> 在煤制油化工裝置中，存在許多有害、易燃、易爆介質(zhì)，南通容積泵密封廠家供應(yīng)，如甲醇、乙烯、硫化氫一氧化碳、輕烴等。機(jī)泵輸送此類介質(zhì)對(duì)密封要求較高，按照現(xiàn)代的管理要求，不允許泄露。 </p> <p> 目前，使用技術(shù)一般有三類，采用無(wú)泄漏泵如屏蔽泵、磁力泵，南通容積泵密封廠家供應(yīng)、隔膜泵等，對(duì)于必須使用離心泵時(shí)，采用雙重機(jī)械密封或干氣密封?；旧洗蟛糠诌m用雙封的場(chǎng)合都可以使用干氣密封，在技術(shù)上來(lái)講都是可行的。 </p> <p> 那么雙重密封與干氣密封，哪個(gè)更好，南通容積泵密封廠家供應(yīng)，常常困擾許多使用者。本文以神華某煤化工項(xiàng)目?jī)艋b置煤化工凈化裝置主洗泵為例，對(duì)雙重密封和干氣密封進(jìn)行一下簡(jiǎn)單的對(duì)比，希望能為更多在此領(lǐng)域的用戶提供選擇的參考。 </p> <p> <br /> 機(jī)械密封的工作溫度不能超過(guò)其規(guī)定值。南通容積泵密封廠家供應(yīng)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通容積泵密封廠家供應(yīng),封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247298412392578/7048929.jpg"></div><p> 隨著工業(yè)技術(shù)和密封技術(shù)的發(fā)展，泵在電力、化工、石油等多個(gè)行業(yè)大量使用，對(duì)泵密封的密封性和可靠性要求更高、更嚴(yán)。化工泵的密封對(duì)整個(gè)設(shè)備運(yùn)轉(zhuǎn)來(lái)說(shuō)起著重要的作用，化工泵的密封系統(tǒng)泄漏將會(huì)嚴(yán)重影響到設(shè)備的正常運(yùn)轉(zhuǎn)。尤其是高溫高壓泵的發(fā)展,更使得對(duì)泵的密封更加嚴(yán)格?；け眯孤c(diǎn) </p> <p> 泵用機(jī)械密封種類繁多，型號(hào)各異，但泄漏點(diǎn)主要有五處： </p> <p> 軸套與軸間的密封動(dòng)環(huán)與軸套間的密封動(dòng)、靜環(huán)間密封對(duì)靜環(huán)與靜環(huán)座間的密封密封端蓋與泵體間的密封 </p> <p> 現(xiàn)象：操作中密封發(fā)出爆裂聲（端面爆裂聲） </p> <p> 可能的原因：密封液在密封界面汽化；加強(qiáng)密封面的冷卻 </p> <p> 解決方法：增加旁路沖洗管線（如果沒(méi)有的話）擴(kuò)大旁路沖洗管線和/或壓蓋上的開(kāi)孔。 </p> <p> 現(xiàn)象：密封連續(xù)滴漏 </p> <p> 可能的原因：表面不平；石墨密封面起泡；密封面產(chǎn)生熱變形 </p> <p> 解決方法：在安裝過(guò)程中，輔助密封被劃傷O形圈老化，由于壓縮形變輔助密封變硬變脆由于化學(xué)作用輔助密封變軟變粘。 </p> <p> 現(xiàn)。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> 蘇州葉輪泵密封廠機(jī)械密封按工作條件和介質(zhì)性質(zhì)的不同，有耐高溫、耐低溫機(jī)械密封，耐高壓、耐腐蝕機(jī)械密封等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通容積泵密封廠家供應(yīng),封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247286448720703/8635806.jpg"></div><p> <p> 影響泵用機(jī)械密封的外部原因 </p> <p> 泵軸的軸向竄量 </p> 泵軸的撓度偏大 </p> <p> 沒(méi)有輔助沖洗系統(tǒng)或輔助沖洗系統(tǒng)設(shè)計(jì)不合理 </p> <p> 振動(dòng)偏大及消除措施 </p> <p> <p> 泵氣蝕的原因及改進(jìn)措施 </p> <p> <p> 在凝結(jié)過(guò)程中，由于體積急劇縮小，四周的液體以極大的速度沖向整個(gè)凝結(jié)空間，使泵內(nèi)造成沖擊振動(dòng)和噪音。在壓力很大、頻率很高的液體質(zhì)點(diǎn)連續(xù)沖擊下，金屬表面逐漸因疲勞而破壞，這種破壞稱為剝蝕。 </p> <p> 同時(shí)溶于液體中的氧等活潑氣體也使金屬產(chǎn)生腐蝕。由于化學(xué)腐蝕與機(jī)械剝蝕的共同作用，加快了金屬損壞的速度，從而使葉輪受到破壞，這就是汽蝕破壞，這種由于液體的汽化和凝結(jié)而產(chǎn)生的沖擊現(xiàn)象就稱為氣蝕現(xiàn)象。消除泵進(jìn)口氣蝕的措施有以下幾點(diǎn)： </p> <p> 提高泵的氣蝕性能水平，滿足現(xiàn)場(chǎng)裝置的氣蝕性能的要求。 </p> <p> 泵應(yīng)當(dāng)在低于允許吸液高度下操作，以保證整個(gè)裝置安全可靠的運(yùn)轉(zhuǎn)。 </p> <p> 采用抗氣蝕材料制造葉輪，如：2Cr13、稀土合金鑄鐵、高鎳鉻合金材料等，比普通鑄鐵的抗氣蝕能力要好得多。 </p> <p> <br /> </p> <p> <br /> </p> </p> </p><p> 低溫輕烴泵用機(jī)械密封 </p> <p> 多彈簧機(jī)械密封采用靜止結(jié)構(gòu)。 </p> <p> 采取增加非補(bǔ)償環(huán)尾部長(zhǎng)度和采用副后蓋結(jié)構(gòu)等措施，增加輕烴泵機(jī)械密封的抗抽空能力。 </p> <p> 采用靜環(huán)背冷措施。 </p> <p> 對(duì)介質(zhì)易汽化的輕烴泵軸封我們?cè)鲈O(shè)背部冷卻,在軸封正常操作時(shí),可對(duì)端面溫度進(jìn)行調(diào)節(jié),使相變半徑靠近內(nèi)徑,增大液膜比例。在泵抽空時(shí),由于端面溫度降低,使閃蒸壓力降低,對(duì)防止端面分離有積極作用。 </p> <p> 摩擦副材料的選取。 </p> <p> 對(duì)摩擦副材料的選取我們采用“SiC-C”結(jié)構(gòu)。輔助密封材料選擇耐低溫的硅橡膠材料。 </p> <p> 采用自沖洗措施。 </p> <p> 通過(guò)沖洗來(lái)提高密封腔壓力以防止抽空造成的密封干摩擦。自沖洗措施不*可保證密封腔內(nèi)有較高的介質(zhì)壓力,避免介質(zhì)在密封腔內(nèi)汽化或氣體積聚,而且還可把摩擦副產(chǎn)生的摩擦熱及時(shí)帶走,有效控制密封端面溫升,增大液相面積,改善摩擦狀態(tài)。石墨炭化是使用碳-石墨環(huán)時(shí)密封失效的主要原因之一。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通容積泵密封廠家供應(yīng),封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293279589844/7625641.jpg"></div><p> 在設(shè)計(jì)合理，加工精良，裝配完好、轉(zhuǎn)速較高時(shí)，迷宮密封效果很好。但在實(shí)際應(yīng)用中，因此而產(chǎn)生的泄漏卻很多，分析其原因主要有： </p> <p> 密封副(如軸和軸承壓蓋)配合間隙太大，而此間隙與密封效果成反比。配合面粗糙，明顯的螺旋狀車刀痕在有些情況下也加大了泄漏趨勢(shì)。 </p> <p> 軸承室內(nèi)潤(rùn)滑油注入量太多，其溢出壓力超過(guò)了密封阻力。 </p> <p> 油窗或油位計(jì)安裝位置有誤，誤導(dǎo)了人們對(duì)油室內(nèi)潤(rùn)滑油量的正確判斷。 </p> <p> 運(yùn)轉(zhuǎn)中油溫的升高使其粘度降低，增加了泄漏的可能。 </p> <p> 回油槽或回油孔尺寸偏小，或受到其它障礙，使被阻滯的液體不能順利返回而造成泄漏。裝O形圈的溝槽尺寸超差，尤其是深度尺寸過(guò)大時(shí)，使O形圈安裝后壓縮變形量不足而影響密封能力。蘇州葉輪泵密封廠</p><p style="text-indent:25px">根據(jù)溫度及流體性質(zhì)，確定摩擦副和輔助密封材料，以及選擇潤(rùn)滑、沖洗、保溫、冷卻機(jī)械密封循環(huán)保護(hù)系統(tǒng)等。南通容積泵密封廠家供應(yīng)</p><p> 內(nèi)密封和外密封 </p> <p> **通常的做法是將密封安裝在填料盒的內(nèi)部。但這種做法要求在密封維修時(shí)將液泵的濕端拆卸下來(lái)，其主要好處是密封的環(huán)境衛(wèi)生易于控制。 </p> <p> <span style="font-size:12px;"> 外密封的安裝方式是將靜態(tài)密封面的方向顛倒過(guò)來(lái)，主軸上的旋轉(zhuǎn)單元位于填料盒壓蓋的外面。外密封主要具有以下五大好處：</span> </p> <p> 安裝容易; </p> <p> 費(fèi)用相對(duì)較低; </p> <p> 可以連續(xù)監(jiān)控和清潔; </p> <p> 適于無(wú)法在內(nèi)部安裝密封的很小填料盒; </p> <p> 由于其位置接近軸承，對(duì)主軸偏差的困難影響較少。 </p> <p> <span style="font-size:12px;"> 其主要缺點(diǎn)是離心力會(huì)將固體顆粒從密封的下面甩向密封的接觸面上。因此，這類密封主要適用于清潔且不含有磨料的液體。</span> </p> <p> <span style="font-size:12px;"> 近年來(lái)，分離式密封已成為外密封中的另一重要附加特性。分離式密封是一個(gè)成套總成，安裝于填料盒與軸承套之間，采用這種設(shè)計(jì)，在密封需要更換時(shí)，不需要每次都拆卸液泵。這類密封結(jié)合探討其他設(shè)計(jì)標(biāo)準(zhǔn)正在逐步開(kāi)發(fā)之中。由于這種設(shè)計(jì)易于更換密封，因此應(yīng)抵擋**只更換密封件的這種誘惑，而對(duì)出現(xiàn)故障的根源不做進(jìn)一步的調(diào)查，這一點(diǎn)非常重要。</span> </p> <p> <br /> 南通容積泵密封廠家供應(yīng)</p><p style="text-indent:25px">漣水創(chuàng)密機(jī)械制造有限公司創(chuàng)建于2014-07-02，注冊(cè)資金 200-300萬(wàn)元，是一家專注漣水創(chuàng)密機(jī)械制造有限公司產(chǎn)品包括:輕型密封、中型密封、重型密封，廣泛應(yīng)用于石油、化工、電力、造紙，食品，機(jī)械密封件來(lái)料加工（塑料機(jī)械密封件除外）、銷售；機(jī)械配件、汽車配件銷售；自營(yíng)和代理各類商品及技術(shù)的進(jìn)出口業(yè)務(wù)，的公司。目前我公司在職員工達(dá)到51~100人人，是一個(gè)有活力有能力有創(chuàng)新精神的高速團(tuán)隊(duì)。公司以誠(chéng)信為本，業(yè)務(wù)領(lǐng)域涵蓋[ "輕型密封", "中型密封", "重型密封", "小型水泵" ]，我們本著對(duì)客戶負(fù)責(zé)，對(duì)員工負(fù)責(zé)，更是對(duì)公司發(fā)展負(fù)責(zé)的態(tài)度，爭(zhēng)取做到讓每位客戶滿意。公司憑著雄厚的技術(shù)力量、飽滿的工作態(tài)度、扎實(shí)的工作作風(fēng)、良好的職業(yè)道德，樹(shù)立了優(yōu)良的[ "輕型密封", "中型密封", "重型密封", "小型水泵" ]形象，贏得了社會(huì)各界的信任和認(rèn)可。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/989513.html</p></div></div></div></div></div><div id="kd78ulh" class="page-right twoColRt"><div id="oq5hyuk" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="tbvlwxd" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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