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class="container clearfix tcPro"><section class="home-main container clearfix"><div id="nxpm22y" class="twoCol"><div id="shzg2yf" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<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_famenti/">閥門</a>?<a href="http://www.cdcfah.com/cp/third-famenti_diefakna/">蝶閥</a>?福建鋼廠真空管道蝶閥哪家好頂耕國(guó)際貿(mào)易供應(yīng)</p><div id="ji388vm" class="leftbox clearfix"><h1>福建鋼廠真空管道蝶閥哪家好頂耕國(guó)際貿(mào)易供應(yīng)</h1><div id="uzby3v8" class="proBig"><div id="smtkzv3" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737719785157/327671.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="jd3uyqn" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737719785157/327671.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="w7z3c3l" 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>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>福建鋼廠真空管道蝶閥哪家好</p><p><span>***更新：</span>2020-05-22 18:28:46</p><p><span id="click" >瀏覽次數(shù)：7次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="h9v477p" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">頂耕國(guó)際貿(mào)易（上海）有限公司</a></p><p><span>聯(lián)系人：</span>查劍來</p><p><span>郵箱: </span></p><p><span>電話: </span>18521036598</p><p><span>傳真: </span>021_61637356</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-61637356</p><p><span>地址: </span>大葉公路5225號(hào)1幢2370室</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="n9lqikm" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ofheliz" class="box"><p><p> 常用的通徑單位有mm、寸、分，寸用”表示一，福建鋼廠真空管道蝶閥哪家好、1寸=二、寸是公稱直徑的英制叫法，mm是國(guó)標(biāo)公制叫法三、在管道的規(guī)格上沒有***的換算公式，對(duì)于小于100只能以1寸=25來模糊計(jì)算，福建鋼廠真空管道蝶閥哪家好，福建鋼廠真空管道蝶閥哪家好，取其相近的數(shù)，對(duì)于大于100的管子用1寸=25可以完全匹配計(jì)算。深圳名閥常用的如下：公稱直徑DN6對(duì)應(yīng)的俗稱1分1/8寸公稱直徑DN8對(duì)應(yīng)的俗稱2分1/4寸公稱直徑DN10對(duì)應(yīng)的俗稱3分3/8寸公稱直徑DN15對(duì)應(yīng)的俗稱4分1/2寸公稱直徑DN20對(duì)應(yīng)的俗稱6分3/4寸公稱直徑DN25對(duì)應(yīng)的俗稱1寸公稱直徑DN32對(duì)應(yīng)的俗稱1寸2分11/4”公稱直徑DN40對(duì)應(yīng)的俗稱1寸半11/2”公稱直徑DN50對(duì)應(yīng)的俗稱2寸公稱直徑DN65對(duì)應(yīng)的俗稱2寸半公稱直徑DN80對(duì)應(yīng)的俗稱3寸公稱直徑DN100對(duì)應(yīng)的俗稱4寸公稱直徑DN125對(duì)應(yīng)的俗稱5寸公稱直徑DN150對(duì)應(yīng)的俗稱6寸公稱直徑DN200對(duì)應(yīng)的俗稱8寸以此類推。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建鋼廠真空管道蝶閥哪家好" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737719785157/327671.jpg"></div><p> (1)閥體和閥蓋的質(zhì)量，特別是在鍛造或鑄造時(shí)應(yīng)避免其產(chǎn)生折疊、夾渣、氣孔、組織疏散、隱裂紋等缺點(diǎn)和成分不均。 </p> <p> <br /> </p> <p> (2)閥桿和閥體連接處零件等的加工質(zhì)量，特別是閥桿和填料函的粗糙度、閥桿的直線度、閥蓋填料函孔的垂直度和加工的精度。 </p> <p> <br /> </p> <p> (3)閥門填料函的結(jié)構(gòu)選擇，由于閥桿處的密封為動(dòng)密封，閥桿在轉(zhuǎn)動(dòng)或滑動(dòng)過程中填料容易磨損，需選用特制的低泄漏填料密封及填料密封組合，并嚴(yán)格控制填料與閥桿的間隙，填料與填料箱的間隙。 </p> <p> <br /> </p> <p> 綜上所述，閥門類型的選用除了滿足工藝條件和標(biāo)準(zhǔn)規(guī)范外，還應(yīng)充分考慮各種使用工況，工程設(shè)計(jì)中應(yīng)力求選用的閥門密封等級(jí)滿足安全、合理和經(jīng)濟(jì)的原則。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建鋼廠真空管道蝶閥哪家好" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737496982422/7639979.png"></div><p> 蝶閥的蝶板安裝于管道的直徑方向。在蝶閥閥體圓柱形通道內(nèi)，圓盤形蝶板繞著軸線旋轉(zhuǎn)，旋轉(zhuǎn)角度為0°~90°之間，旋轉(zhuǎn)到90°時(shí)，閥門則牌全開狀態(tài)。 </p> <p> <br /> </p> <p> 蝶閥結(jié)構(gòu)簡(jiǎn)單、體積小、重量輕，只由少數(shù)幾個(gè)零件組成。而且只需旋轉(zhuǎn)90°即可快速啟閉，操作簡(jiǎn)單，同時(shí)該閥門具有良好的流體控制特性。蝶閥處于完全開啟位置時(shí)，蝶板厚度是介質(zhì)流經(jīng)閥體時(shí)***的阻力，因此通過該閥門所產(chǎn)生的壓力降很小，故具有較好的流量控制特性。蝶閥有彈密封和金屬的密封兩種密封型式。彈性密封閥門，密封圈可以鑲嵌在閥體上或附在蝶板周邊。 </p> <p> <br /> </p> <p> 采用金屬密封的閥門一般比彈性密封的閥門壽命長(zhǎng)，但很難做到完全密封。金屬密封能適應(yīng)較高的工作溫度，彈性密封則具有受溫度限制的缺點(diǎn)。 </p> <p> <br /> </p> <p> 如果要求蝶閥作為流量控制使用，主要的是正確選擇閥門的尺寸和類型。蝶閥的結(jié)構(gòu)原理尤其適合制作大口徑閥門。蝶閥不僅在石油、煤氣、化工、水處理等一般工業(yè)上得到廣泛應(yīng)用，而且還應(yīng)用于熱電站的冷卻水系統(tǒng)。 </p> <p> <br /> </p> <p> 常用的蝶閥有對(duì)夾式蝶閥和法蘭式蝶閥兩種。對(duì)夾式蝶閥是用雙頭螺栓將閥門連接在兩管道法蘭之間，法蘭式蝶閥是閥門上帶有法蘭，用螺栓將閥門上兩端法蘭連接在管道法蘭上。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建鋼廠真空管道蝶閥哪家好" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749327031250/8086057.png"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/7045.html</p></div></div></div></div></div><div id="acy8rd8" class="page-right twoColRt"><div id="n9vu8pz" class="box01 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