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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="27zw24y" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/kaierli/637332706054208984/9484171.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="mkwg8ba" 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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>四川防爆型閥門定位器廠家排名,閥門定位器</p><p><span>***更新：</span>2020-12-18 00:25:00</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ml8qi7x" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">無錫市凱爾利科技有限公司</a></p><p><span>聯(lián)系人：</span>陳經(jīng)理</p><p><span>郵箱: </span>414323414@qq.com</p><p><span>電話: </span>18118900923</p><p><span>傳真: </span>0510_</p><p><span>網(wǎng)址: </span>http://www.kerly.com.cn</p><p><span>手機: </span>0510-81150880</p><p><span>地址: </span>梅村工業(yè)集中區(qū)錫鴻路48-2號樓</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="2e7kr7n" class="page-proshow02"><p class="title">詳細說明</p><div id="32dfcmd" class="box"><p><p style="text-indent:25px">安裝閥門時，為了防止金屬，沙子和其他的一些異物進入閥門內(nèi)部并損壞閥門的密封表面，需要安裝過濾器和沖洗閥。為了保持壓縮空氣的純凈，需要在閥前安裝油水分離器或空氣過濾器。考慮到可以在操作過程中檢查閥門，因此需要安裝儀器和檢查閥。為了保持工作溫度，在閥門外部安裝了隔熱設(shè)施；為了安裝在閥門的后面，四川防爆型閥門定位器廠家排名，需要安裝安全閥或止回閥；考慮連續(xù)閥操作為了避免危險，設(shè)置了并聯(lián)系統(tǒng)或旁路系統(tǒng)。止回閥的防護設(shè)施:為了防止止回閥泄露或者失效后介質(zhì)倒流，引起產(chǎn)品質(zhì)量下降，造成事故等不良后果，止回閥前后設(shè)置一個或兩個切斷閥，四川防爆型閥門定位器廠家排名。如果設(shè)置兩個切斷閥，可便于止回閥拆卸下來維修，四川防爆型閥門定位器廠家排名。定位器長期使用后變化小、磨損的燒損小。四川防爆型閥門定位器廠家排名</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川防爆型閥門定位器廠家排名,閥門定位器" src="https://tyunfile.71360.com/UploadFile/kaierli/637332706054208984/9484171.png"></div><p style="text-indent:25px">定位器作用：1、用于對調(diào)節(jié)質(zhì)量要求高的重要調(diào)節(jié)系統(tǒng),以提高調(diào)節(jié)閥的定位精確及可靠性.2、用于閥門兩端壓差大（△p＞1MPa）的場合.通過提高氣源壓力增大執(zhí)行機構(gòu)的輸出力,以克服流體對閥芯產(chǎn)生的不平衡力,減小行程誤差.3、當被調(diào)介質(zhì)為高溫、高壓、低溫、有毒、易燃、易爆時,為了防止對外泄漏,往往將填料壓得很緊,因此閥桿與填料間的摩擦力較大,此時用定位器可克服時滯.4、被調(diào)介質(zhì)為粘性流體可含有固體懸浮物時,用定位器可以克服介質(zhì)對閥桿移動的阻力.5、用大口徑（Dg＞100mm）的調(diào)節(jié)閥,以增大執(zhí)行機構(gòu)的輸出推力。四川防爆型閥門定位器廠家排名調(diào)節(jié)閥也稱控制閥，是控制回路中一個重要的執(zhí)行環(huán)節(jié)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川防爆型閥門定位器廠家排名,閥門定位器" src="https://tyunfile.71360.com/UploadFile/kaierli/637332706280048828/4819572.png"></div><p style="text-indent:25px">閥門定位器的工作原理是什么?接受控制系統(tǒng)或控制器發(fā)生的指令信號(一般為4~20mA)，通過內(nèi)部電氣轉(zhuǎn)換裝置，把輸入的氣源信號轉(zhuǎn)變?yōu)殚y門執(zhí)行器所需的氣壓，從而使閥門開到相應(yīng)位置。在輸出氣壓使閥門動作過程中，由于定位器反饋桿的存在，檢測到定位器是否動作到位，到位后定位器會根據(jù)這個反饋量穩(wěn)定輸出氣壓，從而起到定位的作用。閥門定位器，按結(jié)構(gòu)分氣動閥門定位器、電氣閥門定位器及智能閥門定位器，是調(diào)節(jié)閥的主要附件，通常與氣動調(diào)節(jié)閥配套使用，它接受調(diào)節(jié)器的輸出信號，然后以它的輸出信號去控制氣動調(diào)節(jié)閥，當調(diào)節(jié)閥動作后，閥桿的位移又通過機械裝置反饋到閥門定位器，閥位狀況通過電信號傳給上位系統(tǒng)。</p><p style="text-indent:25px">一般閥門定位器閥芯振動原因大致如下：調(diào)節(jié)器輸出信號不穩(wěn)定?？焖俚暮龈吆龅偷淖兓藭r如閥門定位器靈敏度太高，則調(diào)節(jié)器輸出微小的變化或飄移，就會立即轉(zhuǎn)換成定位器輸出信號很大。致使閥振蕩。調(diào)節(jié)閥的磨擦力太小，如調(diào)節(jié)閥的填料裝得太少，或壓蓋沒擰緊，外界輸入信號有微小的變化或飄移，會立即傳遞給閥芯，使閥芯振動，并發(fā)出咯咯的響聲。相反，如調(diào)節(jié)閥的磨擦力太大，如填料裝得太多，壓蓋又擰得太緊，或填料函老化，干涸，則在小信號時動作不了，信號大時一經(jīng)動作又產(chǎn)生又產(chǎn)生過頭的現(xiàn)象，會使調(diào)節(jié)閥產(chǎn)生遲滯性振蕩，振動曲線近似呈方形波。遇到這種情況，應(yīng)當減小調(diào)節(jié)閥相應(yīng)部分的阻尼來解決，如更換填料等。氣源波動使定位器輸出波動，或定位器活動部分銹蝕，不靈活，使輸入和輸出信號不對應(yīng)，產(chǎn)生跳躍式振蕩。此時應(yīng)開啟氣源減壓閥的清洗定位器，并向活動部分涂上潤滑油，以消除磨擦力。閥門控制器電動閥過力矩（事故）或電機過流過熱（保護）時的聲光報警。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川防爆型閥門定位器廠家排名,閥門定位器" src="https://tyunfile.71360.com/UploadFile/kaierli/637332705998369141/7861858.png"></div><p style="text-indent:25px">定位器的作用;1、用于提高輸出力，主要用于高壓差，高壓介質(zhì)，高溫，低溫和大口徑閥門場合。2、用于提高調(diào)節(jié)閥質(zhì)量和運動速度，主要由于有放大器和足夠的氣源壓力保證。3、用于電—氣轉(zhuǎn)換，目前多數(shù)調(diào)節(jié)閥與計算機相配套，計算機輸出多數(shù)為4—20mA電流信號，可采用電—氣定位器來滿足要求。4、用于分程調(diào)節(jié)，兩臺調(diào)節(jié)閥分別操作一套設(shè)備、一臺調(diào)節(jié)閥接收4—12mA電信號，另一臺閥門接收12—20mA電信號。這邊是定位器的一些基本作用了，在實際的應(yīng)用中這些都是發(fā)揮著關(guān)鍵作用的。定位器整體的結(jié)構(gòu)不是很復(fù)雜，所以維護起來是比較方便的。江蘇直行程電氣閥門定位器多少錢</p><p style="text-indent:25px">閥門是一種用途極為多的設(shè)備，幾乎可以在任何地方找到。四川防爆型閥門定位器廠家排名</p><p style="text-indent:25px">隨著智能儀表技術(shù)的發(fā)展，微電子技術(shù)多應(yīng)用在傳統(tǒng)儀表中，提高了儀表的功能與性能。電氣閥門定位器是調(diào)節(jié)閥的主要附件，通常與氣動調(diào)節(jié)閥配套使用，它接受調(diào)節(jié)器的輸出信號，然后以它的輸出信號去控制氣動調(diào)節(jié)閥，當調(diào)節(jié)閥動作后，閥桿的位移又通過機械裝置反饋到閥門定位器，閥位狀況通過電信號傳給上位系統(tǒng)。一個調(diào)節(jié)器控制兩個執(zhí)行器實行分程控制時，可用兩個定位器，分別接受低輸入信號和高輸入信號，則一個執(zhí)行器低程動作，另一個高程動作，即構(gòu)成了分程調(diào)節(jié)。四川防爆型閥門定位器廠家排名</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2445872.html</p></div></div></div></div></div><div id="n2rolnu" 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