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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>浙江流量控制閥哪家比較便宜,自動(dòng)再循環(huán)閥</p><p><span>***更新：</span>2021-02-03 06:14:38</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="lthqkw7" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海大田閥門管道工程有限公司</a></p><p><span>聯(lián)系人：</span>余璐辰</p><p><span>郵箱: </span>business@dtjt.com</p><p><span>電話: </span>18621060309</p><p><span>傳真: </span>21_</p><p><span>網(wǎng)址: </span>https://www.dtjt.com</p><p><span>手機(jī): </span>21-68106370</p><p><span>地址: </span>祝橋鎮(zhèn)工業(yè)城</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="epv9okw" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="dgczqsl" class="box"><p><p style="text-indent:25px"> 自動(dòng)再循環(huán)閥可用于給其中的壓力可能升至超過(guò)系統(tǒng)壓的輔助系統(tǒng)提供補(bǔ)給的管路上。自動(dòng)再循環(huán)閥主要可分為旋啟式自動(dòng)再循環(huán)閥（依重心旋轉(zhuǎn)）與升降式自動(dòng)再循環(huán)閥（沿軸線移動(dòng)）。自動(dòng)再循環(huán)閥這種類型的閥門的作用是只允許介質(zhì)向一個(gè)方向流動(dòng)，而且阻止反方向流動(dòng)。通常這種閥門是自動(dòng)工作的，在一個(gè)方向流動(dòng)的流體壓力作用下，浙江流量控制閥哪家比較便宜，閥瓣打開(kāi)；流體反方向流動(dòng)時(shí)，由流體壓力和閥瓣的自重合閥瓣作用于閥座，從而切斷流動(dòng)，浙江流量控制閥哪家比較便宜。其中自動(dòng)再循環(huán)閥就屬于這種類型的閥門。自動(dòng)再循環(huán)閥結(jié)構(gòu)簡(jiǎn)略，浙江流量控制閥哪家比較便宜、體積小、重量輕，只由少量幾個(gè)零件組成。對(duì)夾式自動(dòng)再循環(huán)閥是用雙頭螺栓將閥門銜接在兩管道法蘭之間.浙江流量控制閥哪家比較便宜</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江流量控制閥哪家比較便宜,自動(dòng)再循環(huán)閥" src="https://tyunfile.71360.com/UploadFile/shdatian/637343242885566406/8640380.png"></div><p style="text-indent:25px"> 自動(dòng)再循環(huán)閥介質(zhì)經(jīng)過(guò)閥門入口進(jìn)入閥體，閥芯同時(shí)也是測(cè)量部件感受到流量通過(guò)，當(dāng)流量小于設(shè)定值時(shí)，液體通過(guò)閥座上的開(kāi)孔并通過(guò)閥桿同時(shí)也是旁路閥芯的減壓調(diào)節(jié)通道做旁路循環(huán)。當(dāng)出口流量大于所設(shè)定流量時(shí)，流體進(jìn)入主管道中并逐漸關(guān)閉旁路，進(jìn)行正常流動(dòng)。其旁路及主流路的開(kāi)啟與關(guān)閉只與出口流量有關(guān)。當(dāng)閥門的出口有流體倒流時(shí)，閥芯的逆向動(dòng)作變成逆止閥的工作過(guò)程。閥芯與閥座的導(dǎo)軌處形成的空腔構(gòu)成緩沖室，避免金屬間猛烈沖擊對(duì)閥門對(duì)閥門造成的損環(huán)。浙江流量保護(hù)閥品牌哪家好大口徑的調(diào)節(jié)領(lǐng)域，自動(dòng)再循環(huán)閥的應(yīng)用非常普遍。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江流量控制閥哪家比較便宜,自動(dòng)再循環(huán)閥" src="https://tyunfile.71360.com/UploadFile/shdatian/637343242258173828/6951216.png"></div><p style="text-indent:25px"> 自動(dòng)再循環(huán)閥安裝注意事項(xiàng)：應(yīng)垂直安裝在水平管道上，并應(yīng)考慮到手操和維修拆裝的方便。安裝閥門時(shí)，一般應(yīng)考慮設(shè)置旁道管路。安裝時(shí)，應(yīng)避免給閥門帶來(lái)附加的應(yīng)力，以免因溫度或自重影響閥門的正常使用。當(dāng)閥門安裝在較長(zhǎng)的管道上時(shí)，應(yīng)安裝支架，振動(dòng)劇烈的場(chǎng)合必須輔以支承或采取相應(yīng)的避振措施。安裝時(shí)，應(yīng)使介質(zhì)流向與閥體流向標(biāo)志一致，安裝后對(duì)管道清洗時(shí)，應(yīng)使閥門處于大開(kāi)度。安裝在室外的電動(dòng)閥應(yīng)加保護(hù)措施，以防曝曬和雨淋。自動(dòng)再循環(huán)閥出廠前已經(jīng)調(diào)試好，安裝前不需要解體。</p><p style="text-indent:25px"> 常用的自動(dòng)再循環(huán)閥有對(duì)夾式自動(dòng)再循環(huán)閥和法蘭式自動(dòng)再循環(huán)閥兩種。對(duì)夾式自動(dòng)再循環(huán)閥是用雙頭螺栓將閥門銜接在兩管道法蘭之間，法蘭式自動(dòng)再循環(huán)閥是閥門上帶有法蘭，用螺栓將閥門上兩頭法蘭銜接在管道法蘭上。自動(dòng)再循環(huán)閥的結(jié)構(gòu)和在使用過(guò)程存在的問(wèn)題：目前，自動(dòng)再循環(huán)閥作為一種用來(lái)實(shí)現(xiàn)管路系統(tǒng)通斷及流量控制的部件，已在石油、化工、冶金、水電等許多領(lǐng)域中得到極為普遍地使用。在已公知的自動(dòng)再循環(huán)閥技術(shù)中，其密封形式多采用密封結(jié)構(gòu)，密封材料為橡膠、聚四氟乙烯等。因?yàn)榻Y(jié)構(gòu)特征的限制，不適應(yīng)耐高溫、高壓及耐腐蝕、抗磨損等職業(yè)。自動(dòng)再循環(huán)閥的操作過(guò)程不復(fù)雜，不需要過(guò)分的專業(yè)人員操作.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江流量控制閥哪家比較便宜,自動(dòng)再循環(huán)閥" src="https://tyunfile.71360.com/UploadFile/shdatian/637343243029707031/6971853.png"></div><p style="text-indent:25px"> 根據(jù)感應(yīng)到的主路流量不同,自動(dòng)再循環(huán)閥的主閥瓣止回錐將自動(dòng)移動(dòng)到某一個(gè)位置上。同時(shí)主閥瓣帶動(dòng)旁路閥閥桿,將主閥瓣動(dòng)作傳遞至旁路，通過(guò)控制旁路閥閥瓣的位置，改變旁路的節(jié)流面積，從而控制通過(guò)旁路的流量。當(dāng)主閥瓣回至閥座關(guān)閉狀態(tài)時(shí),所有流量通過(guò)旁路回流。當(dāng)主閥瓣上升至頂端位置時(shí),旁路則完全關(guān)閉,所有泵的流量流向工藝系統(tǒng)。該閥集四種功能于一體。流量感知：自動(dòng)再循環(huán)閥的主閥瓣能自動(dòng)感知工藝系統(tǒng)中的主流量，從而根據(jù)此流量來(lái)確定主閥瓣和旁路閥瓣的位置。再循環(huán)控制：自動(dòng)再循環(huán)閥可以將泵正常運(yùn)行所需要的小流量通過(guò)旁路吸入到存儲(chǔ)裝置中，調(diào)節(jié)水泵的特性，實(shí)現(xiàn)再循環(huán)。旁路多級(jí)減壓：旁路控制系統(tǒng)能低噪音小磨損的把回流介質(zhì)從泵出口的高壓減至適宜回流存儲(chǔ)裝置中的低壓止回：自動(dòng)再循環(huán)閥還具有止回閥的作用，防止液體回流到泵體中。再循環(huán)系統(tǒng)由小流量閥、止回閥、流量測(cè)量系統(tǒng)組成。浙江流量保護(hù)閥品牌哪家好</p><p style="text-indent:25px">長(zhǎng)期存放的閥門應(yīng)定期檢查，去除污物。浙江流量控制閥哪家比較便宜</p><p style="text-indent:25px"> 自動(dòng)再循環(huán)閥處于徹底開(kāi)啟方位時(shí)，蝶板厚度是介質(zhì)流經(jīng)閥體時(shí)的阻力，因而通過(guò)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。自動(dòng)再循環(huán)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。采用金屬密封的閥門一般比彈性密封的閥門壽命長(zhǎng)，但很難做到徹底密封。金屬密封能習(xí)慣較高的工作溫度，彈性密封則具有受溫度限制的缺點(diǎn)。如果要求自動(dòng)再循環(huán)閥作為流量控制運(yùn)用，主要的是正確選擇閥門的尺度和類型。自動(dòng)再循環(huán)閥的結(jié)構(gòu)原理特別適合制作大口徑閥門。自動(dòng)再循環(huán)閥不只在石油、煤氣、化工、水處理等一般工業(yè)上得到普遍應(yīng)用，并且還應(yīng)用于熱電站的冷卻水系統(tǒng)。浙江流量控制閥哪家比較便宜</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3136817.html</p></div></div></div></div></div><div id="38atnry" class="page-right twoColRt"><div id="beaseb3" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="iwxwi7r" 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" 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