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src="https://tyunfile.71360.com/UploadFile/shhanshang/637408582116846338/9296858.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ymoxuwn" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shhanshang/637408582116846338/9296858.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="yct37gd" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>合肥閥桿閥座大修,閥座</p><p><span>***更新：</span>2021-02-01 06:15:38</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="dicegnz" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海含商建設(shè)工程有限公司</a></p><p><span>聯(lián)系人：</span>朱瑩</p><p><span>郵箱: </span>Irene_zy516@163.com</p><p><span>電話: </span>13918191286</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://shhanshang.shop.88360.com</p><p><span>手機(jī): </span>021-58210069</p><p><span>地址: </span>上海市崇明區(qū)新河鎮(zhèn)新申路921弄2號L區(qū)228室(上海富盛經(jīng)濟(jì)開發(fā)區(qū))</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="l8pbsug" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="frczgse" class="box"><p><p style="text-indent:25px">硬密封閥座結(jié)構(gòu)：（1）本體堆焊式：本體堆焊式閥座是在某種金屬材料上堆焊硬質(zhì)合金，閥座帶有一個彈性尾座，有利于減少密封面的摩擦損傷。（2）多層式：多層式密封閥座是多層不銹鋼片和多層薄石墨片交替疊放經(jīng)特殊的加工手段卷壓制而成的，提高了高溫高壓下的性能。（3）空心管式：空心管式密封閥座內(nèi)外是襯套，合肥閥桿閥座大修，中間是不銹鋼管，靠空心的彈力使閥座壓緊球體，合肥閥桿閥座大修，合肥閥桿閥座大修。（4）旋轉(zhuǎn)式：旋轉(zhuǎn)密封閥座主要特點是閥門在啟閉過程中，閥座可沿通道軸線作旋轉(zhuǎn)運動，其結(jié)構(gòu)在閥座的圓周上分布一圈齒牙，球體每關(guān)閉一次，閥座旋轉(zhuǎn)一個齒。這樣使閥座沿圓周產(chǎn)生均勻磨損，從而改善了閥座工作狀況，延長了閥座的使用壽命。根據(jù)不同的使用要求選擇不同性能的合成橡膠，以滿足閥座的使用工況條件。合肥閥桿閥座大修</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="合肥閥桿閥座大修,閥座" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408582116846338/9296858.png"></div><p style="text-indent:25px">閥座密度為15g/cm3，導(dǎo)熱系數(shù)為025W/(m#c)，線膨脹系數(shù)約為105×10-5/℃，抗拉強(qiáng)度為196MPa，彈性模量為1300MPa，抗壓強(qiáng)度為310MPa，彎曲強(qiáng)度為310MPa，耐化學(xué)性能良好，耐弱酸、弱堿和一般溶液，耐油性能優(yōu)異。對位聚苯：對位聚苯(PPL)具有耐高溫性，耐化學(xué)腐蝕性，抗溶劑性，自潤滑性，耐輻射性，低摩擦系數(shù)(013)等特點。密度為2g/cm3，線膨脹系數(shù)約為51×10-5/℃，硬度為80HS，抗拉強(qiáng)度為16MPa，抗壓強(qiáng)度為48MPa，彎曲強(qiáng)度為28MPa。能耐硫酸、氫氟酸等強(qiáng)酸強(qiáng)堿的腐蝕。聚醚醚酮：聚醚醚酮(PEEK)具有熱固性塑料的耐熱性，化學(xué)穩(wěn)定性和熱塑性塑料的成型加工性能，連續(xù)使用溫度可達(dá)240℃以上，玻璃纖維增強(qiáng)可達(dá)300℃以上，密度為13g/cm3，抗拉強(qiáng)度為162MPa，彎曲強(qiáng)度為233MPa。合肥閥桿閥座大修活塞式閥座是依靠進(jìn)口介質(zhì)壓力產(chǎn)生密封力，閥座被推動壓緊球體，密封圈產(chǎn)生彈塑性變形實現(xiàn)密封。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="合肥閥桿閥座大修,閥座" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408582046612006/8114490.png"></div><p style="text-indent:25px">閥座和閥芯配合使用，在油路中起到控制作用。ptfe球閥閥座用的材料：EPDM(三元乙丙橡膠):有優(yōu)異的耐天候、耐臭氧、耐熱、耐酸堿、耐水蒸汽、顏色穩(wěn)定性、電性能、充油性及常溫流動性。乙丙橡膠制品在120°C下可長期使用，在150-200°C下可短暫或間歇使用。根據(jù)工況選擇吧大多數(shù)用聚四氟乙烯，但是耐壓，耐溫也不高，一般也就一百多攝氏度，10Mpa也可以其他的增強(qiáng)型聚四氟Z烯或者聚三氟氯乙烯，這相比于四氟耐壓方面要好點再者可以用聚醚醚酮和對位聚苯等特殊高分子材料，分子材料分通用高分子材料和特殊高分子材料兩大類。</p><p style="text-indent:25px">閥座的選用歸于電動閥門和電動調(diào)節(jié)閥中的一個種類。銜接方式主要有：法蘭式和對夾式。是工業(yè)自動化控制領(lǐng)域中的重要執(zhí)行單元。歸于電動閥門和電動調(diào)節(jié)閥中的一個種類。閥座的閥板裝置于管道的直徑方向。在閥座體圓柱形通道內(nèi)，圓盤形閥板繞著軸線旋轉(zhuǎn)，旋轉(zhuǎn)視點為0°-90°之間，旋轉(zhuǎn)到90°時，閥門則處于全開狀態(tài)。閥座結(jié)構(gòu)簡略、體積小、重量輕，只由少量幾個零件組成。并且只需旋轉(zhuǎn)90°即可快速啟閉，操作簡略，該閥座具有杰出的流體控制特性。聚四氟乙烯閥座彈性模量為400MPa。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="合肥閥桿閥座大修,閥座" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408582221338537/7912539.png"></div><p style="text-indent:25px">閥座有哪些優(yōu)點？1、啟閉方便迅速、省力、流體阻力小，可以經(jīng)常操作。2、結(jié)構(gòu)簡單，外形尺寸小，結(jié)構(gòu)長度短，體積小，重量輕，適用于大口徑的閥座。3、可以運送泥漿，在管道口積存液體少。4、低壓下，可以實現(xiàn)良好的密封。5、調(diào)節(jié)性能好。6、全開時閥座通道有效流通面積較大，流體阻力較小。7、啟閉力矩較小，由于轉(zhuǎn)軸兩側(cè)閥板受介質(zhì)作用基本相等，而產(chǎn)生轉(zhuǎn)矩的方向相反，因而啟閉較省力。8、密封面材料一般采用橡膠、塑料、故低壓密封性能好。9、安裝方便。10、操作靈活省力，可選擇手動、電動、氣動、液壓方式。聚三氟氯乙烯閥座能耐較高溫下的無機(jī)酸、較低溫度下的鹽溶液強(qiáng)氧化劑。長沙沖水閥閥座</p><p style="text-indent:25px">閥座特殊高分子材料主要有聚四氯乙烯、聚三氟氯乙烯、聚全氟乙丙烯、聚醚醚酮和聚酰亞胺等。合肥閥桿閥座大修</p><p style="text-indent:25px">閥座的構(gòu)造類型很多，以往常見的有薄膜式、內(nèi)彈簧活塞式等。閥座的基本作用原理是靠閥座內(nèi)流道對水流的局部阻力降低水壓，水壓降的范圍由連接閥座瓣的薄膜或活塞兩側(cè)的進(jìn)出口水壓差自動調(diào)節(jié)。近年來又出現(xiàn)一些新型閥座，如定比式閥座。定比減壓原理是利用閥座體中浮動活塞的水壓比控制，進(jìn)出口端減壓比與進(jìn)出口側(cè)活塞面積比成反比。這種閥座工作平穩(wěn)無振動；閥座體內(nèi)無彈簧，故無彈簧銹蝕、金屬疲勞失效之慮；密封性能良好不滲漏，因而既減動壓又減靜壓；特別是在減壓的同時不影響水流量。閥座通常有DN50～DN100等多種規(guī)格，閥座前、后的工作壓力分別為＜1MPa和0．1～0．5MPa，調(diào)壓范圍誤差為±5％～10％。合肥閥桿閥座大修</p><p style="text-indent:25px">上海含商建設(shè)工程有限公司是一家市政公用工程，管道工程，機(jī)電設(shè)備安裝、維修（除特種設(shè)備），化工產(chǎn)品及原料（除危險化學(xué)品、監(jiān)控化學(xué)品、煙花爆竹、民用物品、易制毒化學(xué)品）、儀器儀表、五金交電、橡塑制品、建筑材料、裝潢材料、電子產(chǎn)品、日用百貨的銷售，機(jī)械設(shè)備技術(shù)領(lǐng)域內(nèi)的技術(shù)開發(fā)、技術(shù)轉(zhuǎn)讓、技術(shù)咨詢和技術(shù)服務(wù)。的公司，是一家集研發(fā)、設(shè)計、生產(chǎn)和銷售為一體的專業(yè)化公司。公司自創(chuàng)立以來，投身于維修高壓主汽門、高壓調(diào)門，維修中壓主汽門、中壓調(diào)門，閥座的車削、堆焊、補(bǔ)焊，熱處理、研磨，是機(jī)械及行業(yè)設(shè)備的主力軍。上海含商建設(shè)繼續(xù)堅定不移地走高質(zhì)量發(fā)展道路，既要實現(xiàn)基本面穩(wěn)定增長，又要聚焦關(guān)鍵領(lǐng)域，實現(xiàn)轉(zhuǎn)型再突破。上海含商建設(shè)始終關(guān)注機(jī)械及行業(yè)設(shè)備行業(yè)。滿足市場需求，提高產(chǎn)品價值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3107374.html</p></div></div></div></div></div><div id="h8hoa7o" class="page-right twoColRt"><div id="p2rypjk" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="778gdpv" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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