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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="vnevrik" 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>南京計(jì)量泵密封廠家推薦,封</p><p><span>***更新：</span>2020-09-25 02:07:10</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="lykbsok" 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="x3332d2" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="8lcizkl" class="box"><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，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來，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，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)，南京計(jì)量泵密封廠家推薦，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，南京計(jì)量泵密封廠家推薦，南京計(jì)量泵密封廠家推薦，這一點(diǎn)非常重要。</span> </p> <p> <br /> 在對(duì)該設(shè)備進(jìn)行維護(hù)的過程中，也應(yīng)明確彈簧的旋向，一旦出現(xiàn)安裝錯(cuò)誤，將很容易造成泄漏問題。南京計(jì)量泵密封廠家推薦</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京計(jì)量泵密封廠家推薦,封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293279589844/7625641.jpg"></div><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(rùn)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？南京計(jì)量泵密封廠家推薦因端面密封載荷的存在，在密封腔缺乏液體時(shí)啟動(dòng)泵而發(fā)生干摩擦。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京計(jì)量泵密封廠家推薦,封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293837011719/358206.jpg"></div><p> 高溫?zé)崴靡话銥榻橘|(zhì)溫度高于100 °C，在密封突然失效泄漏之后會(huì)噴出大量蒸汽，對(duì)人體造成傷害。主要為鍋爐給水泵、循環(huán)水泵、凝結(jié)水泵等。 </p> <p> 為了不因選用串聯(lián)密封而增加成本，又能使高溫?zé)崴冒踩煽窟\(yùn)行，建議選用單端面機(jī)械密封，沖洗方案可以選擇PLAN23+62。PLAN62 所通急冷液直接從23 冷卻器后引旁路連接至密封急冷口，具體流程見圖3 所示?？梢钥闯?，通過此種布置方式， PLAN62 不需要額外的配管將循環(huán)水引入密封急冷口，又能起到在密封失效時(shí)降低介質(zhì)溫度，從而避免對(duì)人員的傷害，對(duì)系統(tǒng)加以保護(hù)。 </p> <p> <br /> </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； </p> <p> 動(dòng)環(huán)與軸套間的密封； </p> <p> 動(dòng)、靜環(huán)間密封； </p> <p> 對(duì)靜環(huán)與靜環(huán)座間的密封； </p> <p> 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（如果沒有的話）擴(kuò)大旁路沖洗管線和/或壓蓋上的開孔。 </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)象:彈簧失效 </p> <p> 可能的原因:由于腐蝕作用，金屬附件損壞，傳動(dòng)機(jī)構(gòu)被腐蝕 </p> <p> 解決方法:檢查不正確的安裝尺寸,檢查是否采用了不合適的材料和密封類型改進(jìn)沖洗冷卻管線,檢查是否出現(xiàn)壓蓋螺栓扭矩過大導(dǎo)致壓蓋變形,檢查壓蓋墊片的比壓是否合適，檢查密封面間有無(wú)其他固體顆粒，如需要時(shí)對(duì)密封面重新拋光。檢查密封面處的裂紋，更換主、配合密封環(huán)。 </p> <p> 現(xiàn)象:操作過程中，密封發(fā)出尖嘯聲 </p> <p> 可能的原因:密封處的潤(rùn)滑液量不足 </p> <p> 解決方法:增加旁路沖洗管線（如果沒有的話）擴(kuò)大旁路沖洗管線和/或壓蓋上的開孔。軸封腔壓力很高或者壓力接近該密封使用比較高極限時(shí)，由密封腔引液體至低壓區(qū)，使軸封液體流動(dòng)以帶走摩擦熱。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京計(jì)量泵密封廠家推薦,封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293743222656/8640266.jpg"></div><p style="text-indent:25px">液態(tài)烴介質(zhì)是一種低溫液化氣體，具有低沸點(diǎn)、低粘度、高蒸汽壓等特性。在這種工況下應(yīng)用的機(jī)械密封，會(huì)使密封材料出現(xiàn)冷脆性，大氣中的水汽會(huì)在密封裝置的大氣側(cè)面上凍結(jié)，摩擦副端面液膜容易汽化等。尤其是當(dāng)介質(zhì)稍有泄漏，漏出的液態(tài)烴在大氣側(cè)立即汽化，帶走大量熱，機(jī)械密封環(huán)境溫度急劇下降，使用一般的密封材料，如橡膠或聚四氟乙烯普遍變脆，導(dǎo)致密封失效，泄漏增大而不可收拾。有些企業(yè)采用雙端面l機(jī)械密封，在介質(zhì)和大氣端設(shè)一隔離室，其間通以封油以緩和低溫的影響。但這種結(jié)構(gòu)復(fù)雜且需配封液系統(tǒng)。據(jù)經(jīng)驗(yàn)，使用波紋管機(jī)械密封比較好，主要表現(xiàn)在用屬波紋管和柔性石墨代并輔助密封圈，解決了密封圈材料發(fā)生冷脆而失彈及緩沖作用的問題，如DBM型、YH604/606/609型等。泵中常用的是橡膠O型圈。浙江離心泵密封</p><p style="text-indent:25px">介質(zhì)的低于飽和蒸汽壓力，使得端面液膜發(fā)生閃蒸，喪失潤(rùn)滑。南京計(jì)量泵密封廠家推薦</p><p> 雙重密封和液體阻隔裝置 </p> <p> 采用雙重密封面的密封來代替單一的密封件具有更高程度的防漏特性。這類雙重密封大都應(yīng)用于揮發(fā)性強(qiáng)、危險(xiǎn)和潤(rùn)滑性很差的液體。 </p> <p> <span style="font-size:12px;"> 雙重密封一般有三種設(shè)計(jì)型式，每種型式都要求在雙重密封面之間使用一種液體阻隔系統(tǒng)，以防止液體或氣體外泄。比較常用的低成本雙重密封是一種以背靠背方式安裝的密封，其旋轉(zhuǎn)密封面以相反的方向排列。它往往需要一種阻隔液體，其壓力應(yīng)高于填料盒壓力，大約為20psi，這樣就可保證內(nèi)部的密封始終能得到阻隔液體的潤(rùn)滑，而且也可保證密封面達(dá)到一定的密封壓力。</span> 南京計(jì)量泵密封廠家推薦</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(yíng)和代理各類商品及技術(shù)的進(jìn)出口業(yè)務(wù)，的公司，是一家集研發(fā)、設(shè)計(jì)、生產(chǎn)和銷售為一體的專業(yè)化公司。創(chuàng)密機(jī)械制造作為漣水創(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(yíng)和代理各類商品及技術(shù)的進(jìn)出口業(yè)務(wù)，的企業(yè)之一，為客戶提供良好的輕型密封，中型密封，重型密封，小型水泵。創(chuàng)密機(jī)械制造始終以本分踏實(shí)的精神和必勝的信念，影響并帶動(dòng)團(tuán)隊(duì)取得成功。創(chuàng)密機(jī)械制造始終關(guān)注機(jī)械及行業(yè)設(shè)備市場(chǎng)，以敏銳的市場(chǎng)洞察力，實(shí)現(xiàn)與客戶的成長(zhǎng)共贏。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1410540.html</p></div></div></div></div></div><div id="ybsof3b" class="page-right twoColRt"><div id="dbhn83o" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="q2o9jpl" class="recomPic likePro"><a 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