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href="http://www.cdcfah.com/zh/"><span>展會(huì)信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="tsp4z9z" class="twoCol"><div id="b8adbro" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機(jī)械及行業(yè)設(shè)備</a>?<a href="http://www.cdcfah.com/cp/second-jxjxysb_mifengjian/">密封件</a>?<a href="http://www.cdcfah.com/cp/third-mifengjian_jmf/">機(jī)械密封</a>?大同國(guó)標(biāo)釜用機(jī)械密封伊格爾博格曼機(jī)械密封供應(yīng)</p><div id="8bdsjvs" class="leftbox clearfix"><h1>大同國(guó)標(biāo)釜用機(jī)械密封伊格爾博格曼機(jī)械密封供應(yīng)</h1><div id="perqxol" class="proBig"><div id="pzhuw7o" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525788876953/1391639.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3u38kuq" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525788876953/1391639.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="b8a5fpl" 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>大同國(guó)標(biāo)釜用機(jī)械密封,釜用機(jī)械密封</p><p><span>***更新：</span>2021-01-26 04:12:16</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="b3vpbd2" 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(jī)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(jī): </span>0512-58756006</p><p><span>地址: </span>德積福民村（天霸路）</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="lzgipwo" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="kzwt3fh" class="box"><p><p> 在有的國(guó)家已成為主要的軸封方式。國(guó)內(nèi)的焊接金屬波紋管密封質(zhì)量不夠穩(wěn)定，其主要原因是制造金屬波紋管的材料欠佳，大都用181型不銹鋼制造。這種材料耐腐蝕，但強(qiáng)度和彈性較差，特別是在高溫下，使用一段時(shí)間后出現(xiàn)“失彈”。國(guó)外大都用AM350制造，這是一種沉淀硬化不銹鋼，高溫下仍有足夠的強(qiáng)度和彈性，先彈的機(jī)會(huì)較少。但是，經(jīng)過(guò)長(zhǎng)期使約后也暴露了一些缺陷，在波片的焊縫附近開(kāi)裂。究其原因是在受壓狀態(tài)下。一軸向斷面上各處應(yīng)力分布不均勻，有較嚴(yán)重的應(yīng)力集中現(xiàn)象，從而降低了使用壽命。現(xiàn)有的焊接金屬波紋管其斷面的內(nèi)外緣處（或稱波谷和波峰）、幾何形狀和尺寸是相同的，故也稱為“對(duì)稱型”波紋管。它具有上述缺陷，為克服此缺陷，出現(xiàn)了“非對(duì)稱型”波紋管。所謂非對(duì)稱型波紋管是波谷（內(nèi)緣處）和波峰（外緣處）購(gòu)肉率半徑不同，波峰大于波谷。在介質(zhì)壓力作用下，迫使其向低壓側(cè)變形，工作時(shí)斷面形狀趨于對(duì)稱，應(yīng)力趨于均勻（圖44）。同時(shí)由于采用了特殊結(jié)構(gòu)的波紋管，焊縫長(zhǎng)度縮短。據(jù)國(guó)外資料介紹一種13/4英寸的T15WTO型密封，焊縫總長(zhǎng)度超過(guò)4000mm，大同國(guó)標(biāo)釜用機(jī)械密封，而同樣尺寸的非對(duì)稱型波紋管密封，焊縫長(zhǎng)度*87mm，大同國(guó)標(biāo)釜用機(jī)械密封，大同國(guó)標(biāo)釜用機(jī)械密封，使密封的可靠性提高，密封能力提高30%。哈爾濱207釜用機(jī)械密封件。大同國(guó)標(biāo)釜用機(jī)械密封</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="大同國(guó)標(biāo)釜用機(jī)械密封,釜用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525788876953/1391639.png"></div><p> 依靠介質(zhì)壓力和彈簧力使動(dòng)靜環(huán)之間的密封端面緊密貼合，阻止了介質(zhì)的泄漏。摩擦副表面磨損后，在彈簧（5）的推動(dòng)下實(shí)現(xiàn)補(bǔ)償。為了防止介質(zhì)通過(guò)動(dòng)環(huán)與軸之間泄漏，裝有動(dòng)環(huán)密封圈（3）；而靜環(huán)密封圈（7）則阻止了介質(zhì)沿靜環(huán)和壓蓋（8）之間的泄漏。長(zhǎng)期的實(shí)踐證明，輔助設(shè)施的作用不可忽視。從國(guó)外進(jìn)來(lái)的泵，在提供的機(jī)械密封圖紙上，不*有密封結(jié)構(gòu)圖，而且在這張圖上明確地畫(huà)出了輔助設(shè)施的安裝圖，并注明輔助設(shè)施的種類和數(shù)量。國(guó)內(nèi)的制造廠有的開(kāi)始注意這個(gè)問(wèn)題；有的還沒(méi)認(rèn)識(shí)，這是不應(yīng)該的。輔助設(shè)施不*起冷卻和潤(rùn)滑作用，還可改善密封的工作環(huán)境，從而減少泄漏量和延長(zhǎng)使用壽命。因此有人把輔助設(shè)施看作是機(jī)械密封的組成部分。無(wú)疑，這一觀點(diǎn)將被越來(lái)越多的人接受。機(jī)械密封被***地應(yīng)用于各種旋轉(zhuǎn)機(jī)械的軸封，工況不同，使用的密封也不同。機(jī)械密封按使用條件可分為高速和普通機(jī)械密封；高壓和低壓機(jī)械密封；高溫、常溫和低溫機(jī)械密封；泵用、壓縮機(jī)用和釜用機(jī)械密封以及耐腐蝕機(jī)械密封和抗顆粒的機(jī)械密封等。通常都按機(jī)械密封的結(jié)構(gòu)和原理來(lái)分類，例如旋轉(zhuǎn)式和靜止式機(jī)械密封；內(nèi)流式和外流式機(jī)械密封；平衡型和非平衡型機(jī)械密封等。大同國(guó)標(biāo)釜用機(jī)械密封濰坊MR-D釜用機(jī)械密封件。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="大同國(guó)標(biāo)釜用機(jī)械密封,釜用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525362480469/9289807.png"></div><p> 五、與釜用機(jī)械密封有關(guān)的幾個(gè)參數(shù)1.使用壽命釜用機(jī)械密封的使用壽命一般規(guī)定半年以上.其實(shí)使用壽命與攪拌軸的轉(zhuǎn)速、密封尺寸、摩擦副材料等因素有關(guān).圖10-6為EKATO公司對(duì)不同尺寸的密封在不同轉(zhuǎn)速下的使用壽命試驗(yàn)結(jié)果.2.適用范圍釜用密封的適用范圍與使用條件、何種輔助裝置有關(guān)，，每個(gè)密封公司都有其產(chǎn)品適用范圍的說(shuō)明.圖10-7為EKATO公司RD023和RD200ST型密封在密封液貯罐和壓力平衡裝置兩種條件下的適用范圍圖.高溫機(jī)械密封機(jī)械密封的工作溫度超過(guò)80℃時(shí)就作為高溫機(jī)械密封(有的密封公司以工作溫度>90℃為界限)，在高溫下，密封主要間題有下列幾項(xiàng):密封端面液體汽化，摩擦副的熱應(yīng)力和熱變雍，組合件、鑲嵌件可能因配合不當(dāng)而松脫，輔助密封圈因高溫引起的老化、龜裂、粘結(jié)和彈性消失，彈簧疲勞和強(qiáng)度降低，材料的腐蝕和磨損加快.一、高溫機(jī)械密封的要求1.選用耐高溫的密封材料在高溫下，材料的耐溫性能顯得特別重要，合理選用密封材料可使一般結(jié)構(gòu)的機(jī)械密封仍能適用于高溫工作條件，簡(jiǎn)化手續(xù)，節(jié)省開(kāi)支.表10-1列出不同密封材料的使用極限溫度.2.采用金屬波紋管型機(jī)械密封或金屬波紋管與普通機(jī)械密封相結(jié)合的密封結(jié)構(gòu)從耐熱性能來(lái)看。</p><p> 焊接金屬波紋管的彈率的計(jì)算由于焊接金屬波紋管機(jī)械密封不用彈簧，彈性力完全由波紋管產(chǎn)生，因此波紋管設(shè)計(jì)時(shí)要考慮其彈率。一般將波紋管的彈率設(shè)計(jì)得小些，當(dāng)要求一定的彈力時(shí)，波紋管的壓縮量就要適當(dāng)?shù)丶哟?。運(yùn)轉(zhuǎn)相當(dāng)長(zhǎng)時(shí)間后，如果密封端面磨損，波紋管自動(dòng)補(bǔ)償，而彈力降低不會(huì)大，始終保持密封端面有足夠的壓比。為保證足夠的彈性力，壓縮量在10mm左右，低不能低于6mm。工作時(shí)每個(gè)波的變形以小為宜，為保證一定的壓縮量，要適當(dāng)增加波數(shù)，保持波距。一般波數(shù)取16～20，溫度和壓力高時(shí)波數(shù)宜取多。波紋管的彈率是幾何形狀和材料的函數(shù)，常用下式計(jì)算：k=πEt3(c)d2/2nB3d1式中k——波紋管彈率，N／mm；E——材料在工作溫度下的彈性模量，N/mm2；t——波片厚度，mmn——波紋管波數(shù)；d1、d2——分別為波紋管的內(nèi)外徑，mm；B——波紋管的片寬，mm。B=（d2-d1）／2公式中沒(méi)有考慮波片的斷面形狀等因素，因此有一定的誤差。實(shí)際工作中可在彈簧測(cè)力計(jì)上測(cè)量其彈率。普通彈簧的彈率計(jì)算在一般“機(jī)械零件”書(shū)上能找到，故在此不作介紹。非對(duì)稱型波紋管焊接金屬波紋管機(jī)械密封以其結(jié)構(gòu)簡(jiǎn)單、伸縮性好和耐高溫等優(yōu)點(diǎn)，得到了日益廣的應(yīng)用，尤其是高溫泵的密封中。濰坊M461釜用機(jī)械密封件。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="大同國(guó)標(biāo)釜用機(jī)械密封,釜用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525810605469/5748536.png"></div><p> 熱裝式密封環(huán)進(jìn)行強(qiáng)度校核的方法從傳遞扭矩和密封性的角度可以得出環(huán)與環(huán)座的過(guò)盈值，對(duì)此還要進(jìn)行強(qiáng)度校核。對(duì)于環(huán)來(lái)講，大都是脆性材料（例如硬質(zhì)合金和石墨等），承受的是擠壓應(yīng)力，在該應(yīng)力作用下，不能斷裂和產(chǎn)生較大的變形。環(huán)中產(chǎn)生的擠壓應(yīng)力為σ1=2*Pm*K12/（K12-1）式中Pm——過(guò)盈界面上產(chǎn)生的接觸應(yīng)力P＝e/Cdm＿式中K1——系數(shù)。K1=dm/d1式中C——系數(shù)dm——界面直徑。強(qiáng)度校核應(yīng)滿足σ1＜[σ][σ]=σs/nsσs——材料的屈服極限ns——安全系數(shù)對(duì)一般的強(qiáng)度校核，安全系數(shù)n。＝1．8～2。環(huán)是脆件材料，考慮到密封端面上存在溫度差和不允許有較大變形的具體條件，安全系數(shù)取4。也可校對(duì)其變形量。通常規(guī)定脆性材料的應(yīng)變值為。因此，實(shí)際工作中只校核其相對(duì)應(yīng)變值。即允許相對(duì)應(yīng)變量為0．05%。相對(duì)應(yīng)變量ε=σ1/E1=2PmK12/E1(K12-1)式中E1為環(huán)的彈性模量常用熱裝式密封環(huán)的環(huán)磁材料使用溫度根據(jù)泵送介質(zhì)腐蝕性和介質(zhì)溫度（或密封箱溫度）的不同采用不同的環(huán)座材料。常用的環(huán)座材料有1Cr18Ni9、3Cr13、鈦合金和42#卡朋特合金（CAP42，相當(dāng)于國(guó)內(nèi)牌號(hào)4J42）。這些材料線膨脹系數(shù)和耐腐蝕性有較大的差別，使用溫度也不同。前面分析問(wèn)題的時(shí)候，沒(méi)有考慮離心力的影響。蕪湖204B釜用機(jī)械密封件。大同國(guó)標(biāo)釜用機(jī)械密封</p><p style="text-indent:25px">綏化207釜用機(jī)械密封件。大同國(guó)標(biāo)釜用機(jī)械密封</p><p> 密封液壓力平衡系統(tǒng)的壓力源由氮?dú)馄刻峁?。密封腔壓力固定控制在比釜?nèi)壓力高。為了適應(yīng)釜內(nèi)壓力的變化，機(jī)械密封下端面也應(yīng)采用平衡型結(jié)構(gòu)。四、液壓泵站密封液循環(huán)系統(tǒng)液壓泵站密封液循環(huán)系統(tǒng)與釜用機(jī)械密封組合型式見(jiàn)圖1一17。在高負(fù)荷的密封裝置中，應(yīng)采用液壓泵站密封液循環(huán)系統(tǒng)來(lái)強(qiáng)制密封液的冷卻循環(huán)。液壓泵站中密封液的壓力源由離心泵、齒輪泵或柱塞泵等提供。利用泵送壓力強(qiáng)迫密封液在密封腔內(nèi)循環(huán)。該系統(tǒng)還應(yīng)配合過(guò)濾器、冷卻器、儲(chǔ)能器、調(diào)節(jié)閥、壓力表等使用。調(diào)節(jié)好閥的壓力，使密封腔的壓力大于釜內(nèi)壓力。使用液壓泵站密封液循環(huán)系統(tǒng)的雙端面機(jī)械密封，下端面也必須采用平衡型結(jié)構(gòu)。除此之外，還有手壓泵增壓系統(tǒng)等型式。只有合理選用輔助系統(tǒng)，才能保證雙端面密封的使用。大同國(guó)標(biāo)釜用機(jī)械密封</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3013491.html</p></div></div></div></div></div><div id="vewtlce" class="page-right twoColRt"><div id="ch8e2km" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="rwtvco7" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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