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class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdatian/637343241537685546/5558241.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="c2rreqx" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdatian/637343241537685546/5558241.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="gdfx7fz" 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>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>浙江流量控制閥定制怎么樣,自動再循環(huán)閥</p><p><span>***更新：</span>2021-02-03 05:20:54</p><p><span id="click" >瀏覽次數(shù)：5次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="fk7v8t8" 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: </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="ktqifrt" class="page-proshow02"><p class="title">詳細說明</p><div id="inasp8v" class="box"><p><p style="text-indent:25px"> 自動再循環(huán)閥安裝注意事項：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，一般應(yīng)考慮設(shè)置旁道管路。安裝時，應(yīng)避免給閥門帶來附加的應(yīng)力，以免因溫度或自重影響閥門的正常使用。當(dāng)閥門安裝在較長的管道上時，應(yīng)安裝支架，振動劇烈的場合必須輔以支承或采取相應(yīng)的避振措施。安裝時，應(yīng)使介質(zhì)流向與閥體流向標(biāo)志一致，浙江流量控制閥定制怎么樣，安裝后對管道清洗時，應(yīng)使閥門處于大開度，浙江流量控制閥定制怎么樣。安裝在室外的電動閥應(yīng)加保護措施，以防曝曬和雨淋。自動再循環(huán)閥出廠前已經(jīng)調(diào)試好，浙江流量控制閥定制怎么樣，安裝前不需要解體。自動再循環(huán)閥的原理是利用了彈簧力與壓力相平衡的原理.浙江流量控制閥定制怎么樣</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江流量控制閥定制怎么樣,自動再循環(huán)閥" src="https://tyunfile.71360.com/UploadFile/shdatian/637343241537685546/5558241.png"></div><p style="text-indent:25px"> 自動再循環(huán)閥獨特的折彎工藝，有效減小了自動再循環(huán)閥的體積，實現(xiàn)了制冷劑、冷熱水與空氣的穩(wěn)定換熱。冷卻水耗量有效的降低，減少了空冷器對冷卻水流量和壓力供給的需要。提高了送出壓縮空氣的質(zhì)量，降低了壓縮空氣中水分等的含量。自動再循環(huán)閥若壁溫過低，同時換熱器的功率也會隨之降低，因此，挑選自動再循環(huán)閥的時候，需要注意外表負荷的大小。噴冷凍水的話,將起到降溫減濕的作用,這和自動再循環(huán)閥是類似的;如果噴的是蒸汽,將會達到增溫加濕的效果;浙江流量控制閥定制怎么樣自動再循環(huán)主流道中的止回閥與旁路成為一個整體，幾乎免維護。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江流量控制閥定制怎么樣,自動再循環(huán)閥" src="https://tyunfile.71360.com/UploadFile/shdatian/637343243029707031/6971853.png"></div><p style="text-indent:25px"> 自動再循環(huán)閥特點：防氣蝕多級減壓旁路，降低流速，適用于高壓工況；鍛造閥體，可選用碳鋼或不銹鋼材質(zhì)等；標(biāo)準(zhǔn)型旁路帶止回功能，大工作壓差至30MPa；壓力等級PN16-PN420，口徑DN25-DN500；可選擇增加手動旁路操作功能，以備故障時使用。自動再循環(huán)閥工作原理：旁路多級減壓：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裝置中的低壓。止回：自動再循環(huán)閥還具有止回閥的作用，防止液體回流到泵體中。標(biāo)準(zhǔn)型旁路帶止回功能。其它旁路尺寸可按要求制作；大的旁路流量取決于大的Kv值。</p><p style="text-indent:25px"> 自動再循環(huán)閥封閉后，因為介質(zhì)或環(huán)境溫度的變化，自動再循環(huán)閥部件的熱膨脹會使閘板和閥座之間的壓力變大，反映到閥桿螺母上，就為再此開啟自動再循環(huán)閥帶來難題。所以，開啟自動再循環(huán)閥所需的力矩比封閉自動再循環(huán)閥所需的力矩大，此外，對于一對互相接觸的密封面來說，它們之間的靜摩擦系數(shù)也比動摩擦系數(shù)大，要使它們從靜止?fàn)顟B(tài)產(chǎn)生相對運動，需施加較大的力以克服靜摩擦力；因為溫度變化，使密封面間的壓力變大，需要克服的靜摩擦力也隨之變大，從而使開啟自動再循環(huán)閥時，對閥桿螺母上施加的力矩有時會增大良多。自動再循環(huán)閥優(yōu)先考慮垂直安裝，也可水平安裝。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江流量控制閥定制怎么樣,自動再循環(huán)閥" src="https://tyunfile.71360.com/UploadFile/shdatian/637343241264736328/8875293.png"></div><p style="text-indent:25px"> 自動再循環(huán)閥用于防止給水泵的低負荷運行時由于過熱、嚴(yán)重噪音，不穩(wěn)定汽蝕引起損壞。只要泵的流量低到一定數(shù)值，閥的輔助回流口就會自動地打開。當(dāng)自動再循環(huán)閥的開度在10％以上時，自動再循環(huán)閥的軸向力，即自動再循環(huán)閥的操縱力矩變化不大。當(dāng)自動再循環(huán)閥的開度低于10％時，因為流體的節(jié)流，使自動再循環(huán)閥的前后壓差增大。這個壓差作用在閘板上，使閥桿需要較大的軸向力才能帶動閘板，所以在此范圍內(nèi)，自動再循環(huán)閥的操縱力矩變化比較大。彈性閘板的自動再循環(huán)閥，在接近封閉時所需的操縱力矩比剛性閘板的要大些。自動再循環(huán)閥具備V或VI級密封，快速開啟/關(guān)閉功能。鎮(zhèn)江自動再循環(huán)閥哪個牌子好</p><p style="text-indent:25px">自動再循環(huán)閥為自力式控制閥，不需要外部供給能源。浙江流量控制閥定制怎么樣</p><p style="text-indent:25px"> 自動再循環(huán)閥介質(zhì)經(jīng)過閥門入口進入閥體，閥芯同時也是測量部件感受到流量通過，當(dāng)流量小于設(shè)定值時，液體通過閥座上的開孔并通過閥桿同時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，流體進入主管道中并逐漸關(guān)閉旁路，進行正常流動。其旁路及主流路的開啟與關(guān)閉只與出口流量有關(guān)。當(dāng)閥門的出口有流體倒流時，閥芯的逆向動作變成逆止閥的工作過程。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閥門對閥門造成的損環(huán)。浙江流量控制閥定制怎么樣</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3135497.html</p></div></div></div></div></div><div id="3obyahe" class="page-right twoColRt"><div id="u22scoq" class="box01 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