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<meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u 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href="http://www.cdcfah.com/cp/third-mifengjian_jmf/">機(jī)械密封</a>?松原宙斯泵用機(jī)械密封件設(shè)計(jì) 伊格爾博格曼機(jī)械密封供應(yīng)</p><div id="kwrg23s" class="leftbox clearfix"><h1>松原宙斯泵用機(jī)械密封件設(shè)計(jì) 伊格爾博格曼機(jī)械密封供應(yīng)</h1><div id="7uaphhq" class="proBig"><div id="bozzjzj" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ygebgm/637330181789541015/3812583.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="rjd8kk3" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ygebgm/637330181789541015/3812583.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="plv8ww2" 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>松原宙斯泵用機(jī)械密封件設(shè)計(jì),泵用機(jī)械密封件</p><p><span>***更新：</span>2020-12-24 03:12:57</p><p><span id="click" >瀏覽次數(shù)：4次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="kmi8aag" 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="lnnx33t" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="xkqwcb2" class="box"><p><p> 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)會較少。但是，經(jīng)過長期使約后也暴露了一些缺陷，在波片的焊縫附近開裂。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“對稱型”波紋管。它具有上述缺陷，為克服此缺陷，松原宙斯泵用機(jī)械密封件設(shè)計(jì)，出現(xiàn)了“非對稱型”波紋管。所謂非對稱型波紋管是波谷（內(nèi)緣處）和波峰（外緣處）購肉率半徑不同，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，焊縫長度縮短。據(jù)國外資料介紹一種13/4英寸的T15WTO型密封，焊縫總長度超過4000mm，而同樣尺寸的非對稱型波紋管密封，焊縫長度*87mm，松原宙斯泵用機(jī)械密封件設(shè)計(jì)，使密封的可靠性提高，密封能力提高30%，波紋管的彈性提高了40%，松原宙斯泵用機(jī)械密封件設(shè)計(jì)。非對稱型波紋管在國外已投放市場。寶雞襄樊五二五泵用機(jī)械密封件維修。松原宙斯泵用機(jī)械密封件設(shè)計(jì)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="松原宙斯泵用機(jī)械密封件設(shè)計(jì),泵用機(jī)械密封件" src="https://tyunfile.71360.com/UploadFile/ygebgm/637330181789541015/3812583.png"></div><p> 氣體不會在泵的中部滯留·(5)無軸的彎曲問題，軸封可遠(yuǎn)離泵體，減少熱的影響。電機(jī)安裝架為遮風(fēng)結(jié)構(gòu)，所以電機(jī)的溫升對泵幾乎沒有影響。(6)泵殼埋于地下，易于保冷.所以，石油液化氣用的低溫泵常用以上這種結(jié)構(gòu).2.低溫甲烷泵機(jī)械密封甲烷液化氣在-99℃時(shí)的蒸汽壓接近3MPa.乙烯裝置脫甲烷塔底泵在-53℃時(shí)出口壓力近似3MPa，采用雙端面串聯(lián)式機(jī)械密封，它是比拉公司BB81-K7+BB81B-S7型，尺寸為45x39與50x45(圖10-20)。耐腐蝕機(jī)械密封在腐蝕性介質(zhì)中，機(jī)械密封的零件受到介質(zhì)的強(qiáng)烈侵蝕，摩擦面同時(shí)受到.腐蝕和磨損，這種現(xiàn)象稱為“磨蝕“，其腐蝕速度約為無摩擦?xí)r的10~50倍.某些結(jié)構(gòu)材料具有優(yōu)良的耐蝕性能，耐磨性能卻較差;而另一些結(jié)構(gòu)材料雖具有良好的耐磨性，耐蝕性卻很差.因此，摩擦副應(yīng)選擇既要耐腐蝕又要耐磨，輔助密封圈、彈擠和結(jié)構(gòu)件也要有良好的耐蝕性能.在設(shè)計(jì)耐腐蝕機(jī)械密封時(shí)，一般采取以下一些措施:1.結(jié)構(gòu)上的隔離措施采用外裝式結(jié)構(gòu)，經(jīng)過適當(dāng)?shù)倪x擇，外裝式密封可以做到無金屬件與工藝介質(zhì)接觸，小的零件如彈簧、銷子可不受工藝介質(zhì)腐蝕.外裝式有普通型機(jī)械密封和波紋管型機(jī)械密封兩種，’以波紋管型密封結(jié)構(gòu)較好(圖10-21).如密封件材質(zhì)耐蝕能力許可。松原宙斯泵用機(jī)械密封件設(shè)計(jì)麗江石家莊工業(yè)泵泵用機(jī)械密封件廠家。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="松原宙斯泵用機(jī)械密封件設(shè)計(jì),泵用機(jī)械密封件" src="https://tyunfile.71360.com/UploadFile/ygebgm/637330182097675781/701815.png"></div><p> 磨損較均勻；從受力角度考慮過窄不利，破壞和變形的可能性增加了＞俐，密封端面的直徑又是載荷系數(shù)的函數(shù)。因此，密封端面的寬度應(yīng)綜合考慮。一般地講，對普通介質(zhì)密封端面隨直徑的增大而加寬。對于輕烴類介質(zhì)，端面寬度比在普通介質(zhì)中寬一些：而高速機(jī)械密封，端面寬度相對地窄一些，否則發(fā)熱量太大，不能正常運(yùn)轉(zhuǎn)，一般在3mm左右。環(huán)直徑（mm、環(huán)寬（mm）－20～602～460～1004～6100～2005—7四、密封環(huán)的技術(shù)要求：1）密封端面的平面度不大于0．0009mm（即三個(gè)單色光干涉帶）；硬質(zhì)材料密封端面粗糙度Ra值不大于0．2μm（相當(dāng)于Δ10）；軟質(zhì)材料密封端面粗糙度Ra值不大于0．4μm(相當(dāng)于Δ9)，表面不應(yīng)有裂紋、劃傷、氣孔和疏松等影響使用性能的缺陷。2）密封環(huán)的密封端面與輔助密封圈接觸的端面平行度按GBll84－80的7級精度規(guī)定。3）密封環(huán)端面與安裝輔助密封圈的內(nèi)（或外）圓表面的垂直度應(yīng)按GBll84－80的7級精度的規(guī)定。4）密封環(huán)與輔助密封圈接觸部位的表面粗糙度凡值不大于3．2μm；外圓或內(nèi)孔尺寸公差為hg或Hg。上述要求是對普通泵用機(jī)械密封的密封環(huán)而言，對轉(zhuǎn)速較低的釜用機(jī)械密封可適當(dāng)放寬或參考相應(yīng)的標(biāo)準(zhǔn)，而對高速機(jī)械密封則要求更高。五、平面度平面度。</p><p> 1、調(diào)溫器（1）為改善攪拌軸支承穩(wěn)定性，降低密封腔的工作溫度，提高使用性能，應(yīng)選配調(diào)溫器。它的選用原則見釜用機(jī)械密封冷卻和潤滑的第1條及表6、表7。（2）適用于單端面機(jī)械密封的調(diào)溫器XT型和LT型（見圖20）。圖20XT、LT型調(diào)溫器結(jié)構(gòu)圖（3）適用雙端面機(jī)械密封的調(diào)溫器CT型（見圖21）。圖21CT型調(diào)溫器結(jié)構(gòu)圖（也可與機(jī)封做成一體）2、循環(huán)保護(hù)系統(tǒng)（1）循環(huán)保護(hù)系統(tǒng)的分類：1）A循環(huán)系統(tǒng)——GCL型平衡罐熱虹吸流程；2）B循環(huán)系統(tǒng)——GDL型平衡罐強(qiáng)制循環(huán)系統(tǒng)；3）C循環(huán)系統(tǒng)——開式循環(huán)系統(tǒng)；4）D循環(huán)系統(tǒng)——D04-17型液壓泵站強(qiáng)制循環(huán)系統(tǒng)。（2）循環(huán)系統(tǒng)流程圖（見圖22）圖22機(jī)械密封循環(huán)保護(hù)系統(tǒng)示意圖（3）循環(huán)保護(hù)系統(tǒng)的選用原則，見釜用機(jī)械密封冷卻和潤滑的第1條及表6、表7。3、G型平衡罐是釜用機(jī)械密封A、B循環(huán)系統(tǒng)配套使用的平衡罐，它的型式、作用及使用等具體見后期推出的“G型平衡罐的使用說明”。4、D04-17型液壓泵站D04-17型液壓泵站是專為釜用機(jī)械密封“D循環(huán)系統(tǒng)”配套的液壓供油裝置，它具有潤滑、調(diào)溫、調(diào)壓、濾除雜質(zhì)等功能，可確保雙端面機(jī)械密封穩(wěn)定可靠地運(yùn)行，其詳細(xì)使用情況見“D04-17型液壓泵站使用說明書”。寶雞凝結(jié)水泵泵用機(jī)械密封件廠家。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="松原宙斯泵用機(jī)械密封件設(shè)計(jì),泵用機(jī)械密封件" src="https://tyunfile.71360.com/UploadFile/ygebgm/637330181800947265/661555.png"></div><p> 用于壓縮機(jī)的高速機(jī)械密封的直徑較大，而用于高速泵的機(jī)械密封尺寸一般都在2in左右.高速泵用的機(jī)械密封以美國約翰克蘭公司(JohnCranePackingCompany)的9AB型密封**為典型[圖10-17(a),(b)]，這種密封常用在美國Sundstrand公司高速泵的齒輪箱和泵體的密封上.為了節(jié)省空間并獲得較高的重量與功率比，無論泵的結(jié)構(gòu)和機(jī)械密封結(jié)構(gòu)都很緊湊，一般石油化工公司都引進(jìn)這種高速泵‘，目前揚(yáng)子石油化工公司有關(guān)裝置使用51臺(見表3-41)，中國石油化工總公司系統(tǒng)使用近200臺。圖中60C用于齒輪箱密封，60A或60A+60B用于泵葉輪端密封.低溫機(jī)械密封一般低溫機(jī)械密封是指工作溫度在0~-50℃的密封，API-610的低溫含義指溫度低于-29℃，國內(nèi)通常以密封腔溫度低于-20℃為低溫.實(shí)際上，低溫范圍較寬，可以劃分為:低溫:-20~-50℃中低溫:-50~-100℃極低溫:-100~-196℃**溫:<-196℃泵送低溫介質(zhì)主要指液化氣體和易揮發(fā)的液體，如液態(tài)氮、液態(tài)氧、甲烷、乙烷、乙烯等液化氣。關(guān)于氮、氧、空氣等液化氣體的物理性能如表10-3所示.關(guān)于乙烯、丙烯、甲烷、乙烷、丙烷的物理性能如圖10-18(a)、(b)、(c)、(d)所示·一、低溫機(jī)械密封的要求1.材料要求金屬材料隨著溫度降低。中山KSB泵用機(jī)械密封件廠家。松原宙斯泵用機(jī)械密封件設(shè)計(jì)</p><p style="text-indent:25px">銅仁襄樊五二五泵用機(jī)械密封件廠家。松原宙斯泵用機(jī)械密封件設(shè)計(jì)</p><p> 在國產(chǎn)離心泵上得到了***的應(yīng)用。本教材以這兩種國產(chǎn)機(jī)械密封為主，結(jié)合其它結(jié)構(gòu)型式（包括進(jìn)口的密封），就有關(guān)的技術(shù)問題和故障分析。第二節(jié)機(jī)械密封的基本元件密封環(huán)是動(dòng)環(huán)和靜環(huán)的總稱（下同），是構(gòu)成機(jī)械密封**主要的元件。一、密封環(huán)在很大程度上決定了機(jī)械密封的使用性能和壽命，對它提出了一些要求。1）有足夠的強(qiáng)度和剛度。在工作條件下（如壓力、溫度和滑動(dòng)速度等）不損壞，變形應(yīng)盡量的小，工作條件波動(dòng)時(shí)仍能保持密封性。2）密封端面應(yīng)有足夠的硬度和耐腐蝕性，以保證工作條件下有滿意的使用壽命。3）密封環(huán)應(yīng)有良好的耐熱沖擊能力。為此，要求材料有較高的導(dǎo)熱系數(shù)和較小的線膨脹系數(shù)，承受熱沖擊時(shí)不至于開裂。4）密封環(huán)匹配應(yīng)有較小的摩擦系數(shù)和良好的自潤滑性，密封環(huán)材料與密封流體還要有很好的浸潤性。工作中如發(fā)生短時(shí)間的干摩擦，不損傷密封端面。5）密封環(huán)應(yīng)力求簡單、對稱并優(yōu)先考慮用整體型結(jié)構(gòu)。也可采用組合式（如鑲裝式）密封環(huán)，盡量避免用密封端面噴涂式結(jié)構(gòu)。6）密封環(huán)要容易加工制造，安裝和維修要方便，價(jià)格要低廉。二、摩擦副匹配要考慮的因素摩擦副一般都選擇一軟一硬的配對。目前軟環(huán)多選用破一石墨（以下簡稱石墨）。松原宙斯泵用機(jī)械密封件設(shè)計(jì)</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2535882.html</p></div></div></div></div></div><div id="of387lf" class="page-right twoColRt"><div id="ob8fcrx" class="box01 margin10 clearfix"><h3><a 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