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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8svqwct" 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>鹽城化工泵密封批發(fā)價(jià),封</p><p><span>***更新：</span>2020-06-15 12:21:15</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="3xdekqr" 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="skvwn77" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="83dulrx" class="box"><p><p> 機(jī)械密封的平衡對(duì)接觸面的密封壓力有很大影響。這一密封壓力取決于密封本身的有效截面以及填料盒內(nèi)的壓力。 </p> <p> 非平衡型密封的旋轉(zhuǎn)面相反一側(cè)的截面完全暴露于填料盒的壓力范圍之下，這種情況會(huì)使密封面之間產(chǎn)生很高的密封壓力，從而會(huì)使工作溫度提高，加快磨損速度。在高溫工作條件下或液體具有較大腐蝕性和磨擦性的情況下，會(huì)較大程度降低機(jī)械密封的使用壽命。 </p> <p> 對(duì)機(jī)械密封加以平衡，可降低密封壓力，延長密封的使用壽命。一般采用帶有臺(tái)階的主軸和軸套，降低旋轉(zhuǎn)面的有效截面，就可達(dá)到上述目的。不過千萬別將凈密封壓力調(diào)節(jié)到接近零的水平，因?yàn)檫@樣做的結(jié)果可能會(huì)造成密封面之間的工作狀況不穩(wěn)定，并可能會(huì)因突然的變故而將密封吹開。 </p> <p> 解決這些密封問題的答案也許是采用非平衡式密封，對(duì)于某些服務(wù)來說，也許采用非平衡式密封能達(dá)到更好的效果。例如，在某些應(yīng)用領(lǐng)域，與密封的使用壽命相比，也許更強(qiáng)調(diào)對(duì)液體泄漏造成的安全性問題。在這種情況下，對(duì)密封的選用也許可理解為更希望選擇具有較高的密封壓力，鹽城化工泵密封批發(fā)價(jià)。同樣，在選用較冷液體的密封時(shí)，操作溫度的增加也許是微不足道的。 </p> <p> 不管出于何種考慮，當(dāng)填料盒的壓力超過50psi時(shí)，鹽城化工泵密封批發(fā)價(jià)，鹽城化工泵密封批發(fā)價(jià)，一般推薦使用平衡式密封。機(jī)械密封在流體機(jī)械中發(fā)揮著非常重要的作用，可以有效防止機(jī)械內(nèi)部的介質(zhì)流出泵外。鹽城化工泵密封批發(fā)價(jià)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="鹽城化工泵密封批發(fā)價(jià),封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293743222656/8640266.jpg"></div><p> 對(duì)石化行業(yè)來說，高溫重質(zhì)油泵用機(jī)械密封的選用一直是一大難題，例如催化裂化油漿泵、回?zé)捰捅?、常壓塔底泵、初餾塔底泵、減壓塔底泵、延遲焦化的輻射進(jìn)料泵等。 </p> <p> 高溫重質(zhì)油泵的介質(zhì)具有以下共同的特點(diǎn): </p> <p> 溫度高:一般在340一400℃; </p> <p> 介質(zhì)粘度大:在溫度下一般運(yùn)動(dòng)粘度為(12一180)X 10一6m/s; </p> <p> 介質(zhì)有顆粒:如催化劑、焦炭、含有砂粒等其他雜質(zhì)。 </p> <p> 對(duì)于高溫重油介質(zhì)泵用機(jī)械密封?，F(xiàn)在各個(gè)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。鹽城水泵密封批發(fā)廠人們?cè)诜治鰴C(jī)械密封泄漏原因時(shí)，在機(jī)械封自身方面查找原因，比如：它的選型如是否合適，材料選擇是否正確。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="鹽城化工泵密封批發(fā)價(jià),封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247286448720703/8635806.jpg"></div><p> 隨著時(shí)代的高速發(fā)展，對(duì)石油資源的需求量不斷增加，石油煉廠的生產(chǎn)任務(wù)越來越重。泵用機(jī)械在石油煉廠生產(chǎn)過程中發(fā)揮著非常重要的作用，但在其實(shí)際運(yùn)行過程中，其機(jī)械密封往往會(huì)出現(xiàn)各種問題，不僅影響機(jī)械的正常使用，還容易導(dǎo)致安全問題的發(fā)生。文章對(duì)石油煉廠常用機(jī)械密封的設(shè)計(jì)改進(jìn)與應(yīng)用進(jìn)行分析，希望對(duì)中國石油煉化事業(yè)的發(fā)展起到積極的促進(jìn)作用。 </p> <p> 機(jī)械密封在流體機(jī)械中發(fā)揮著非常重要的作用，可以有效防止機(jī)械內(nèi)部的介質(zhì)流出泵外。其運(yùn)行情況，對(duì)泵用機(jī)械運(yùn)行的穩(wěn)定性有著非常直接的影響，在石油煉化生產(chǎn)過程中，發(fā)揮著非常重要的作用。各種流體機(jī)械在化工生產(chǎn)中，有著非常明顯的應(yīng)用，隨著石油煉化技術(shù)的高速發(fā)展，流體機(jī)械的應(yīng)用參數(shù)水平也在不斷提高，對(duì)機(jī)械性能要求也在不斷提高，轉(zhuǎn)軸密封的作用非常突出。我國對(duì)機(jī)械密封的研究開始較晚，從上個(gè)世紀(jì)80 年代，機(jī)械密封在石油煉化產(chǎn)業(yè)中才開始得到大規(guī)模的應(yīng)用。 </p><p> 機(jī)械密封的密封環(huán)之間應(yīng)有一層液體薄膜，具有下列三個(gè)作用： </p> <p> 支持密封受到的大部分水壓負(fù)荷。 </p> <p> 作為潤滑劑，減少密封環(huán)生成的摩擦熱。 </p> <p> 使粗糙接觸**小化，從而降低磨損率。 </p> <p> 作為傳熱介質(zhì)，轉(zhuǎn)移密封環(huán)直接區(qū)域的熱能。 </p> <p> 首先我們要研究密封失效的原因，根據(jù)我的經(jīng)驗(yàn)，有如下： </p> <p> 生產(chǎn)上的缺點(diǎn)； </p> <p> 設(shè)計(jì)上的缺點(diǎn)； </p> <p> 缺少培訓(xùn)/技術(shù)； </p> <p> 在我們拆卸機(jī)械密封的之前，我們先要想好以下幾點(diǎn)： </p> <p> 主要的泄漏在哪里? </p> <p> 在外部件上是否有碎片？ </p> <p> 是否觀察到軸或旋轉(zhuǎn)的密封部件有偏心現(xiàn)象？ </p> <p> 有否與系統(tǒng)相關(guān)的震動(dòng)/噪音（如氣穴，接合錯(cuò)位）？ </p> <p> 在“泵”或密封是否存在局部的熱生成？ </p> <p> 在不同的情況下泄漏是否是間歇的，如在不同的溫度下？ </p> <p> 屬何種泄漏，噴射，小滴，水流或流往管道？ </p> <p> 軸承是否有軸向間隙？ </p> <p> 如果是雙端面密封，則檢查隔離液供應(yīng)是否完好。 </p> <p> 密封在軸上的相對(duì)位置？ </p> <p> <br /> 熱裂是高溫油泵，如油渣泵、回?zé)捰捅?、常減壓塔底泵等**常見的失效現(xiàn)象。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="鹽城化工泵密封批發(fā)價(jià),封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293921376953/5749071.jpg"></div><p> 機(jī)械密封裝配前的檢查有哪些內(nèi)容？答：一般性檢查：主要檢查個(gè)零件的型號(hào)、規(guī)格、性能、配合尺寸及有無缺口、點(diǎn)坑、變形和裂紋等損傷。動(dòng)、靜環(huán)的檢查：密封端面要光潔明亮、物崩邊、點(diǎn)坑、溝槽、劃痕等缺點(diǎn)。對(duì)石墨環(huán)，還要浸沒有檢查是否有裂紋。 </p> <p> .機(jī)械密封彈簧的檢查都包括哪些內(nèi)容？答：彈簧的檢查包括：總?cè)?shù)、有效圈數(shù)、自由高度、軸心對(duì)端面是否垂直、彈簧旋向。但彈簧必須檢查旋向，多彈簧不需要檢查旋向。新彈簧要檢查其原始自由高度，自由高度要測(cè)量，并與原始記錄比較，殘余變形過大的要更換掉。舊彈簧清洗干凈后，要測(cè)量其彈力，彈力減少20%的要更換掉。多彈簧機(jī)械密封，各彈簧自由高度差不得小于0.5mm。在使用單彈簧的機(jī)械密封時(shí)，忽略彈簧的旋轉(zhuǎn)方向與泵轉(zhuǎn)子轉(zhuǎn)動(dòng)方向的正確組合也時(shí)有發(fā)生。泰州多級(jí)泵密封市場(chǎng)批發(fā)價(jià)格</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，以及選擇潤滑、沖洗、保溫、冷卻機(jī)械密封循環(huán)保護(hù)系統(tǒng)等。鹽城化工泵密封批發(fā)價(jià)</p><p> 有害介質(zhì)時(shí)為了取得更好的密封效果，采用雙重密封，根據(jù)密封液系統(tǒng)壓力可分為有壓雙封(雙端面機(jī)械密封)和無壓雙封(串聯(lián)式機(jī)械密封)。 </p> <p> 有壓雙封密封液系統(tǒng)的壓力一般要比一級(jí)密封前的壓力高0.01-0.03MPa。這樣一級(jí)密封泄漏時(shí)，密封液會(huì)進(jìn)入泵內(nèi)，確保了泵內(nèi)介質(zhì)不會(huì)泄漏到外界。由于密封液進(jìn)入泵內(nèi)，密封液系統(tǒng)壓力、液位降低，可以實(shí)現(xiàn)密封的泄漏監(jiān)測(cè)和報(bào)警。 </p> <p> 無壓雙封密封系統(tǒng)內(nèi)的壓力一般為常壓或微壓，低于一級(jí)密封前的密封腔壓力。當(dāng)一級(jí)密封泄漏時(shí)，泵內(nèi)介質(zhì)會(huì)進(jìn)人密封液系統(tǒng)，導(dǎo)致密封液系統(tǒng)的壓力和液位升高，可以通過壓力開關(guān)或液位開關(guān)實(shí)現(xiàn)泄露監(jiān)測(cè)和報(bào)警。通過密封液系統(tǒng)來監(jiān)測(cè)雙端面機(jī)械密封失效與否，也是其區(qū)別于單端面機(jī)械密封**主要的形式之一。 </p> <p> <br /> 鹽城化工泵密封批發(fā)價(jià)</p><p style="text-indent:25px">漣水創(chuàng)密機(jī)械制造有限公司是一家漣水創(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；自營和代理各類商品及技術(shù)的進(jìn)出口業(yè)務(wù)，的公司，創(chuàng)建于2014-07-02。公司自2014-07-02成立以來，投身于[ "輕型密封", "中型密封", "重型密封", "小型水泵" ]，是機(jī)械及行業(yè)設(shè)備的主力軍。公司擁有多年的行業(yè)經(jīng)驗(yàn)，每年以銷售收入達(dá)到700-1000萬元，如果您想了解更多產(chǎn)品信息，請(qǐng)通過頁面上的電話聯(lián)系我們。創(chuàng)密機(jī)械制造創(chuàng)始人袁軍成，始終關(guān)注客戶，以優(yōu)化創(chuàng)新的科技，竭誠為客戶提供比較好的服務(wù)。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/267117.html</p></div></div></div></div></div><div id="ge8jpqw" class="page-right twoColRt"><div id="ems8tou" class="box01 margin10 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