杭州化工泵用密封中間商貼心服務(wù) 漣水創(chuàng)密機(jī)械供應(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="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：支持密封受到的大部分水壓負(fù)荷。作為潤滑劑，減少密封環(huán)生成的摩擦熱。使粗糙接觸**小化，杭州化工泵用密封中間商，從而降低磨損率。作為傳熱介質(zhì)，轉(zhuǎn)移密封環(huán)直接區(qū)域的熱"><meta name="keywords" content="杭州化工泵用密封中間商"><link rel="canonical" href="http://m.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 http-equiv="Cache-Control" 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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>杭州化工泵用密封中間商</p><p><span>***更新：</span>2020-06-22 20:31:34</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="chz8pmj" 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="s89h2jq" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="mroqxug" class="box"><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，杭州化工泵用密封中間商，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，杭州化工泵用密封中間商，噴射，小滴，杭州化工泵用密封中間商，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><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="杭州化工泵用密封中間商" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293635341797/9903144.jpg"></div><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。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)，一般推薦使用平衡式密封。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="杭州化工泵用密封中間商" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293743222656/8640266.jpg"></div><p> 結(jié)合設(shè)計(jì)經(jīng)驗(yàn)以及對(duì)API 682標(biāo)準(zhǔn)的研究，對(duì)泵用機(jī)械密封的選型要點(diǎn)進(jìn)行了分析，主要包括密封類型、密封形式、布置方式、沖洗方案等。進(jìn)而對(duì)煉油裝置中的高溫?zé)嵊捅?、高溫?zé)崴靡约皬?qiáng)酸強(qiáng)堿泵機(jī)械密封及輔助系統(tǒng)的選型提出了合理化建議，對(duì)API 682中的PLAN53B和PLAN23進(jìn)行了改進(jìn)，使之更好地為機(jī)械密封服務(wù)，有利于機(jī)械密封長期穩(wěn)定運(yùn)行。 </p> <p> 由于機(jī)械密封具有密封性能好、工作可靠、泄漏量小、功率消耗少等特點(diǎn)，因而在國內(nèi)外煉油化工生產(chǎn)的旋轉(zhuǎn)設(shè)備中得到了較大規(guī)模的應(yīng)用，已經(jīng)成為泵、壓縮機(jī)、反應(yīng)釜、攪拌器等工藝設(shè)備能否正常運(yùn)轉(zhuǎn)的關(guān)鍵部件。 </p> <p> 隨著環(huán)境保護(hù)和人類健康要求的提高，煉油裝置中對(duì)泵用機(jī)械密封的要求也在不斷提高。據(jù)統(tǒng)計(jì)，煉油裝置中機(jī)泵故障的40% 以上是由于機(jī)械密封發(fā)生泄漏而引起的。造成這一現(xiàn)象的原因，一是作為機(jī)泵中的動(dòng)密封其本身所處的工作條件、起的作用所決定；二是許多國內(nèi)設(shè)計(jì)單位以及工程公司認(rèn)為機(jī)械密封及系統(tǒng)的選用是泵廠和密封廠的責(zé)任，往往對(duì)密封的類型、布置方式、沖洗方案了解不深，難以制定機(jī)械密封的選配方案，造成部分密封選型不當(dāng)。 </p> <p> <br /> </p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/354555.html</p></div></div></div></div></div><div id="apmj8pw" class="page-right twoColRt"><div id="laxzgi8" class="box01 margin10 clearfix"><h3><a 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