北京煉鋼廠真空管道蝶閥泄露頂耕國(guó)際貿(mào)易供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="閥門(mén)選型的要點(diǎn)1、明確閥門(mén)在設(shè)備或裝置中的用途確定閥門(mén)的工作條件：適用介質(zhì)的性質(zhì)、工作壓力、工作溫度和操縱控制方式等。2、正確選擇閥門(mén)的類(lèi)型閥門(mén)型式的正確選擇是以設(shè)計(jì)者對(duì)整個(gè)生產(chǎn)工藝流程、操作工況的充分掌握為先決條件的，在選擇閥門(mén)類(lèi)型時(shí)，北"><meta name="keywords" content="北京煉鋼廠真空管道蝶閥泄露"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" 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id="fz4yebn" class="searchbox"><div id="bacrtkm" class="searchLt"><div id="jy2bnzb" class="tabs"><a href="JavaScript:;" data-type="product" class="active">產(chǎn)品</a><a href="JavaScript:;" data-type="member" class="">公司</a><a href="JavaScript:;" data-type="article" class="">資訊</a><a href="JavaScript:;" data-type="exhibition" class="">展會(huì)</a></div><div id="hwtaxja" class="clearfix searchWrap"><div id="33oah34" class="searchInput"><input type="text" name="keywords" placeholder="請(qǐng)輸入搜索關(guān)鍵詞" id="kd"><a href="javascript:void(0)" class="searchBtn" id="search">搜索</a></div></div></div></div></header><nav class="navbox"><div id="jnkmtac" class="container"><ul><li id = "index_index"><a href="http://www.cdcfah.com/"><span>首頁(yè)</span></a></li><li id = "index_company"><a ><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://www.cdcfah.com/cp/"><span>產(chǎn)品供應(yīng)</span></a></li><li id = "index_news"><a 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class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/9390800.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="fpheqsz" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/9390800.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="l8lhjby" 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>北京煉鋼廠真空管道蝶閥泄露</p><p><span>***更新：</span>2020-05-24 12:31:22</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="oia7ub7" 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(lái)</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="cld87xu" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="7g8g2z2" class="box"><p><p> 閥門(mén)選型的要點(diǎn) </p> <p> <br /> </p> <p> 1、明確閥門(mén)在設(shè)備或裝置中的用途 </p> <p> <br /> </p> <p> 確定閥門(mén)的工作條件：適用介質(zhì)的性質(zhì)、工作壓力、工作溫度和操縱控制方式等。 </p> <p> <br /> </p> <p> 2、正確選擇閥門(mén)的類(lèi)型 </p> <p> <br /> </p> <p> 閥門(mén)型式的正確選擇是以設(shè)計(jì)者對(duì)整個(gè)生產(chǎn)工藝流程、操作工況的充分掌握為先決條件的，在選擇閥門(mén)類(lèi)型時(shí)，北京煉鋼廠真空管道蝶閥泄露，設(shè)計(jì)人員應(yīng)首先掌握每種閥門(mén)的結(jié)構(gòu)特點(diǎn)和性能。 </p> <p> <br /> </p> <p> 3、確定閥門(mén)的端部連接 </p> <p> <br /> </p> <p> 在螺紋連接、法蘭連接、焊接端部連接中，前兩種**常用。螺紋連接的閥門(mén)主要是公稱(chēng)通徑在50mm以下的閥門(mén)，如果通徑尺寸過(guò)大，連接部的安裝和密封十分困難。 </p> <p> <br /> </p> <p> 法蘭連接的閥門(mén)，其安裝和拆卸都比較方便，但是較螺紋連接的閥門(mén)笨重，價(jià)格較高，故它適用于各種通徑和壓力的管道連接。 </p> <p> <br /> </p> <p> 焊接連接適用于較荷刻的條件下，比法蘭連接更為可靠，北京煉鋼廠真空管道蝶閥泄露。但是焊接連接的閥門(mén)拆卸和重新安裝都比較困難，所以它的使用于通常能長(zhǎng)期可靠地運(yùn)行，或使用條件荷刻、溫度較高的場(chǎng)合。 </p> <p> <br /> </p> <p> 4、閥門(mén)材質(zhì)的選擇 </p> <p> <br /> </p> <p> 選擇閥門(mén)的殼體、內(nèi)件和密封面的材質(zhì)，北京煉鋼廠真空管道蝶閥泄露，除了考慮工作介質(zhì)的物理性能（溫度、壓力）和化學(xué)性能（腐蝕性）外，還應(yīng)掌握介質(zhì)的清潔程度（有無(wú)固體顆粒），除此之外，還要參照國(guó)家和使用部門(mén)的有關(guān)規(guī)定。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京煉鋼廠真空管道蝶閥泄露" src="https://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/9390800.png"></div><p> 閥門(mén)執(zhí)行機(jī)構(gòu)使用液體、氣體、電力或其它能源并通過(guò)電機(jī)、氣缸或其它裝置將其轉(zhuǎn)化成驅(qū)動(dòng)作用?；镜膱?zhí)行機(jī)構(gòu)用于把閥門(mén)驅(qū)動(dòng)至全開(kāi)或全關(guān)的位置。用與控制閥的執(zhí)行機(jī)構(gòu)能夠精確的使閥門(mén)走到任何位置。盡管大部分執(zhí)行機(jī)構(gòu)都是用于開(kāi)關(guān)閥門(mén)，但是如今的執(zhí)行機(jī)構(gòu)的設(shè)計(jì)遠(yuǎn)遠(yuǎn)超出了簡(jiǎn)單的開(kāi)關(guān)功能，它們包含了位置感應(yīng)裝置，力矩感應(yīng)裝置，電極保護(hù)裝置，邏輯控制裝置，數(shù)字通訊模塊及PID控制模塊等，而這些裝置全部安裝在一個(gè)緊湊的外殼內(nèi)。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京煉鋼廠真空管道蝶閥泄露" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737890810547/4528489.jpg"></div><p> 什么情況下需要采用閥門(mén)定位器？ </p> <p> <br /> </p> <p> 1）摩擦力大，需精確定位的場(chǎng)合。例如高溫、低溫調(diào)節(jié)閥或采用柔性石墨填料的調(diào)節(jié)閥； </p> <p> 2）緩慢過(guò)程需提高調(diào)節(jié)閥響應(yīng)速度的場(chǎng)合。例如，溫度、液位、分析等參數(shù)的調(diào)節(jié)系統(tǒng)。 </p> <p> 3）需要提高執(zhí)行機(jī)構(gòu)輸出力和切斷力的場(chǎng)合。例如，DN≥25的單座閥，DN＞100的雙座閥。閥兩端壓降△P＞1MPa或入口壓力P1＞10MPa的場(chǎng)合。 </p> <p> 4）分程調(diào)節(jié)系統(tǒng)和調(diào)節(jié)閥運(yùn)行中有時(shí)需要改變氣開(kāi)、氣關(guān)形式的場(chǎng)合。 </p> <p> 5）需要改變調(diào)節(jié)閥流量特性的場(chǎng)合。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京煉鋼廠真空管道蝶閥泄露" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/9390800.png"></div></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/28087.html</p></div></div></div></div></div><div id="f7zwtqx" class="page-right twoColRt"><div id="nfe3a3i" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="pzho3fe" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="sm37ldf" 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