安徽RH真空管道蝶閥等級頂耕國際貿(mào)易供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content=" 電動閥門和氣動閥門相比，前者結(jié)構(gòu)簡單，運行可靠，對遠距離操作點其動力源（電源或氣源）容易解決。缺點是價格較高，且防爆要求也較高。在選用時，應(yīng)綜合考慮動力源的可獲得性、價格和控制要求等因素。電動閥門選型：當選用電動閥門電動執(zhí)行器的"><meta name="keywords" content="安徽RH真空管道蝶閥等級"><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" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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11:22:57</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="7myvuqs" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">頂耕國際貿(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: </span>021-61637356</p><p><span>地址: </span>大葉公路5225號1幢2370室</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="hh7jhpx" class="page-proshow02"><p class="title">詳細說明</p><div id="7n9dbrx" class="box"><p><p> 電動閥門和氣動閥門相比，前者結(jié)構(gòu)簡單，運行可靠，對遠距離操作點其動力源（電源或氣源）容易解決。缺點是價格較高，且防爆要求也較高。在選用時，應(yīng)綜合考慮動力源的可獲得性、價格和控制要求等因素。電動閥門選型：當選用電動閥門電動執(zhí)行器的控制模式一般分為開關(guān)型和調(diào)節(jié)型）時，除了基本的閥體口徑、壓力、材質(zhì)等要求外，還應(yīng)提供下列參數(shù)： 1.電源參數(shù)（包括電壓、相數(shù)和頻率）； 2.運行時間和電動執(zhí)行器的形式； 3.是否要求防爆，防爆等級； 4.大氣防護等級； 5.過載保護要求，例如過行程保護，安徽RH真空管道蝶閥等級、過扭矩保護等； 6.就地操作要求，如是否帶就地操作手輪； 7.操作指示要求。氣動閥門選型：當選用氣動閥門氣動執(zhí)行器的運作原理可分為單作用和雙作用）時，除了確定閥體口徑、壓力、材質(zhì)等具體參數(shù)外，安徽RH真空管道蝶閥等級，還應(yīng)在提供下列參數(shù)： 1.氣源參數(shù)（包括氣源壓力范圍、是否帶自備儲氣罐等） 2.運行時間和氣動執(zhí)行器的形式 3.是否要求防爆，安徽RH真空管道蝶閥等級，防爆等級； 4.大氣防護等級； 5.過載保護要求，例如過行程保護、過扭矩保護等； 6.就地操作要求，如是否帶就地操作手輪； </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽RH真空管道蝶閥等級" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749325380860/6768130.png"></div><p> 其質(zhì)量直接影響閥門的使用壽命。合理地選擇閥門密封面的材料是提高閥門使用壽命的重要途徑之一。在閥門密封面材料選用時應(yīng)避免走入誤區(qū)。誤區(qū)1:閥門密封面材料的硬度高其耐磨損性能就好。實驗表明,閥門密封面材料的耐磨損性能是由其金屬材料的組織結(jié)構(gòu)所決定的。有些以奧氏體為基體加少量硬質(zhì)相結(jié)構(gòu)的金屬材料其硬度并不很高,但其耐磨損性能很好。閥門密封面具有一定的高硬度是為避免被介質(zhì)中硬雜物墊傷和劃傷。綜合考慮,硬度值HRC35~45為宜。誤區(qū)2:閥門密封面材料的價格高其性能就好。材料的價格是其本身的商品特性,而材料的使用性能是其物理特性,兩者沒有必然聯(lián)系。鈷基合金中金屬鈷來源于進口,價格較高,因而鈷基合金材料價格就高。鈷基合金的特點是高溫耐磨性能好,而用在常溫、中溫工況,則價格/性能比較高。在閥門密封面材料選用時應(yīng)選擇價格/性能比較低的材料。誤區(qū)3:閥門密封面材料在某一強腐蝕性介質(zhì)中耐蝕性良好,就一定適應(yīng)其他腐蝕性介質(zhì)。金屬材料的耐腐蝕性有其復(fù)雜的機理,一種材料在某一強腐蝕介質(zhì)中耐蝕性能良好,而條件稍有變化,如溫度或介質(zhì)濃度等改變,則耐蝕性能即改變。對另一種腐蝕性介質(zhì),其耐蝕性能變化更大。金屬材料的耐腐蝕性只能通過實驗得知。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽RH真空管道蝶閥等級" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749327031250/8086057.png"></div><p> 主要分類 </p> <p> 按驅(qū)動方式分 </p> <p> (1)電動蝶閥 </p> <p> (2)氣動蝶閥 </p> <p> (3)液動蝶閥 </p> <p> (4)手動蝶閥 </p> <p> 按結(jié)構(gòu)形式分： </p> <p> (1)中心密封蝶閥 </p> <p> (2)單偏心密封蝶閥 </p> <p> (3)雙偏心密封蝶閥 </p> <p> (4)三偏心密封蝶閥 </p> <p> 密封面材質(zhì)分： </p> <p> (1)軟密封蝶閥。 </p> <p> 1)密封副由非金屬軟質(zhì)材料對非金屬軟質(zhì)材料構(gòu)成。 </p> <p> 2)密封副由金屬硬質(zhì)材料對非金屬軟質(zhì)材料構(gòu)成。 </p> <p> (2)金屬硬密封蝶閥。密封副由金屬硬質(zhì)材料對金屬硬質(zhì)材料構(gòu)成。 </p> <p> 按工作壓力分： </p> <p> (1)真空蝶閥。工作壓力低于標堆大氣壓的蝶閥。 </p> <p> (2)低壓蝶閥。公稱壓力PN<1．6MPa的蝶閥。 </p> <p> (3)中壓蝶閥。公稱壓力PN為2．5--6．4MPa的蝶閥。 </p> <p> (4)高壓蝶閥。公稱壓力PN為10.0--80．0MPa的蝶閥。 </p> <p> (5)超高壓蝶閥。公稱壓力PN>100MPa的蝶閥。 </p> <p> 按連接方式分： </p> <p> 1、對夾式蝶閥 </p> <p> 對夾式蝶閥的蝶板安裝于管道的直徑方向。閥門則呈全開狀態(tài)。 </p> <p> 對夾式蝶閥結(jié)構(gòu)簡單、體積小、重量輕。蝶閥有彈性密封和金屬密封兩種密封型式。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> 2、法蘭式蝶閥 </p> <p> 法蘭式蝶閥為垂直板式結(jié)構(gòu)，閥桿為整體式金屬硬密封閥門的密封圈 </p> <p> 為柔性石墨板與不銹鋼板復(fù)合式結(jié)構(gòu)，安裝在閥體上，蝶板密封面堆焊不銹鋼。軟密封閥門的密封圈為丁腈橡膠材質(zhì)，是安裝在蝶板上的。 </p> <p> 3、凸耳式蝶閥 </p> <p> 4、焊接式蝶閥 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽RH真空管道蝶閥等級" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737493554688/8379117.png"></div></p><br 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