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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>?北京專業(yè)真空管道蝶閥等級(jí) 頂耕國際貿(mào)易供應(yīng)</p><div id="k9o9pgh" class="leftbox clearfix"><h1>北京專業(yè)真空管道蝶閥等級(jí) 頂耕國際貿(mào)易供應(yīng)</h1><div id="ri43jaw" class="proBig"><div id="lxgr3ne" class="bigimg"><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 id="zy9m4jk" 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="eib3p3i" 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>北京專業(yè)真空管道蝶閥等級(jí)</p><p><span>***更新：</span>2020-06-01 08:17:45</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="88qzc9u" 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(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="cgu2drc" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="w8aju4o" class="box"><p><p> （1）系統(tǒng)壓力及壓差不可太大，以便能夠提供有足夠余量的大推力執(zhí)行機(jī)構(gòu)，并減輕重量。（2）因噪聲水平與流量成比例，因此噪聲水平是必須仔細(xì)考慮問題，應(yīng)盡可能地選擇直通流道或增設(shè)小孔噴射型結(jié)構(gòu)，減小流體通過節(jié)流口的速度和流量來降低噪聲水平。（3）因受力面積大，不平衡力大，不穩(wěn)定因素多，因此提高閥整體剛度和抗震性也是一個(gè)必須考慮的因素。（4）對(duì)于大口徑閥，因尺寸大、重量大，運(yùn)輸、安裝、維護(hù)都比較復(fù)雜，將閥門裝到管線里以及拆卸和更換主要零部件都需使用吊車等設(shè)備，因此，提高可靠性，減輕重量也是一個(gè)需重點(diǎn)考慮的方面. </p> <p> 旋轉(zhuǎn)類的大口徑閥為提高剛度，閥桿通常較粗，同時(shí)閥芯或閥板也非常重。如何保證笨重的閥芯閥板的定位和靈活動(dòng)作是主要的技術(shù)問題之一。閥的口徑越大作用越明顯?！叭铡弊中椭Ъ艿耐屏S承可以承受閥板（閥芯）和閥桿的重量，使其猶如被吊起來一樣，北京專業(yè)真空管道蝶閥等級(jí)，保證了閥板（閥芯）動(dòng)作自如，北京專業(yè)真空管道蝶閥等級(jí)，北京專業(yè)真空管道蝶閥等級(jí)，提高了其靈敏度。同時(shí)“日”字型支架將閥板（閥芯）在縱向鎖定，保證了閥板（閥芯）定位的準(zhǔn)確性，避免因重力等原因使閥板（閥芯）單邊偏移，造成堵卡等問題，提高了動(dòng)作的可靠性。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京專業(yè)真空管道蝶閥等級(jí)" src="https://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/9390800.png"></div><p> 6、銅合金銅合金常用材料有6-6-3錫青銅和58-2-2錳黃銅等。銅合金耐磨性好，適用于溫度t≤200℃、公稱壓力PN≤，常用于閘閥、截止閥、止回閥、旋塞閥等。7、鉻不銹鋼鉻不銹鋼常用牌號(hào)有2Cr13、3Cr13經(jīng)調(diào)質(zhì)處理，耐腐蝕性能好。常用于溫度t≤450℃、公稱壓力PN≤32MPa的水、蒸汽和石油等介質(zhì)的閥門上。8、鉻鎳鈦不銹鋼鉻鎳鈦不銹鋼常用牌號(hào)為1Cr18Ni9ti，其耐腐性、耐沖蝕性和耐熱性能較好。適用于溫度t≤600℃、公稱壓力PN≤、硝酸等介質(zhì)中，用于截止閥、球閥等。9、滲氮鋼滲氮鋼常用牌號(hào)是38CrMoAlA，經(jīng)滲碳處理，具有良好的耐腐蝕性和抗擦傷性。常用于溫度t≤540℃、公稱壓力PN≤10MPa的電站閘閥。10、滲硼滲硼由閥體或閥瓣本體材料直接加工出密封面，再進(jìn)行滲硼表面處理，密封面耐磨性能很好。用于電站排污閥。閥門在使用中，應(yīng)該注意的事項(xiàng)如：1、應(yīng)對(duì)閥門的密封性能進(jìn)行試驗(yàn)，確保其性能。2、應(yīng)查看閥門密封面是否磨損，并根據(jù)情況進(jìn)行維修或更換。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京專業(yè)真空管道蝶閥等級(jí)" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737496279297/8393517.png"></div><p> 安裝要求 </p> <p> 1、安裝位置、高度、進(jìn)出口方向必須符合設(shè)計(jì)要求，連接應(yīng)牢固緊密。 </p> <p> 2、安裝在保溫管道上的各類手動(dòng)閥門，手柄均不得向下。 </p> <p> 3、閥門安裝前必須進(jìn)行外觀檢查，閥門的銘牌應(yīng)符合現(xiàn)行國家標(biāo)準(zhǔn)《通用閥門標(biāo)志》GB 12220的規(guī)定。對(duì)于工作壓力大于1.0 MPa 及在主干管上起到切斷作用的閥門，安裝前應(yīng)進(jìn)行強(qiáng)度和嚴(yán)密性能試驗(yàn)，合格后方準(zhǔn)使用。強(qiáng)度試驗(yàn)時(shí)，試驗(yàn)壓力為公稱壓力的1.5倍，持續(xù)時(shí)間不少于5min，閥門殼體、填料應(yīng)無滲漏為合格。嚴(yán)密性試驗(yàn)時(shí)，試驗(yàn)壓力為公稱壓力的1.1倍；試驗(yàn)壓力在試驗(yàn)持續(xù)的時(shí)間應(yīng)符合GB 50243標(biāo)準(zhǔn)要求，以閘板密封面無滲漏為合格。 </p> <p> 大口徑閘閥適用于 Class150 ～ 2500 、工作溫度 -29～425℃（碳鋼）或 -29～500℃（不銹鋼）的小口徑管路上，用于截?cái)嗷蚪油ü苈分械慕橘|(zhì)，選用不同的材質(zhì)，可分別適用于水、蒸汽、油品、硝酸、醋酸、氧化性介質(zhì)、尿素等多種介質(zhì)。在石油管道上應(yīng)用較多。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京專業(yè)真空管道蝶閥等級(jí)" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749328144532/3165155.png"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/106464.html</p></div></div></div></div></div><div id="337ptbh" class="page-right twoColRt"><div id="882ocvg" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="mgsja9z" class="recomPic likePro"><a 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