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</span>http://www.lanfa.cn</p><p><span>手機(jī): </span>0519-88610258</p><p><span>地址: </span>橫山橋鎮(zhèn)省莊村</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="7vcebdf" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="p8yf8xe" class="box"><p><p style="text-indent:25px">蝶閥工作原理：蝶板由閥桿帶動(dòng)，若轉(zhuǎn)過90°，便能完成一次啟閉。改變蝶板的偏轉(zhuǎn)角度，即可控制介質(zhì)的流量。碟閥作用蝶閥適用于發(fā)生爐、煤氣，大同閥門哪家便宜、天然氣、液化石油氣、城市煤氣、冷熱空氣、化工冶煉和發(fā)電環(huán)保、建筑給排水等工程系統(tǒng)中輸送各種腐蝕性、非腐蝕性流體介質(zhì)的管道上，用于調(diào)節(jié)和截?cái)嘟橘|(zhì)的流動(dòng)，大同閥門哪家便宜，大同閥門哪家便宜。試壓方法氣動(dòng)蝶閥的強(qiáng)度試驗(yàn)與截止閥一樣。蝶閥的密封性能試驗(yàn)應(yīng)從介質(zhì)流人端引入試驗(yàn)介質(zhì)，蝶板應(yīng)開啟，另一端封閉，注入壓力至規(guī)定值。檢查填料和其他密封處無滲漏后，關(guān)閉蝶板，打開另一端，檢查蝶板密封處無滲漏為合格。作為調(diào)節(jié)流量用的蝶閥可不做密封性能試驗(yàn)。安全閥類的作用是防止管路或裝置中的介質(zhì)壓力超過規(guī)定數(shù)值。大同閥門哪家便宜</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="大同閥門哪家便宜,閥門" src="https://tyunfile.71360.com/UploadFile/lanfatonyon/637408829478340527/3223130.png"></div><p style="text-indent:25px">名詞解釋：閥門的密封性能是指閥門各密封部位阻止介質(zhì)泄漏的能力，它是閥門較重要的技術(shù)性能指標(biāo)。閥門的密封部位有三處：?jiǎn)㈤]件與閥座兩密封面間的接觸處；填料與閥桿和填料函的配和處；閥體與閥蓋的連接處。其中前一處的泄漏叫做內(nèi)漏，也就是通常所說的關(guān)不嚴(yán)，它將影響閥門截?cái)嘟橘|(zhì)的能力。對(duì)于截?cái)嚅y類來說，內(nèi)漏是不允許的。后兩處的泄漏叫做外漏，即介質(zhì)從閥內(nèi)泄漏到閥外。外漏會(huì)造成物料損失，污染環(huán)境，嚴(yán)重時(shí)還會(huì)造成事故。對(duì)于易燃易爆、有毒或有放射的介質(zhì)，外漏更是不能允許的，因而閥門必須具有可靠的密封性能。常州閥門電裝訂購安裝車間必須保證潔凈，或者搭建臨時(shí)的潔凈區(qū)域。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="大同閥門哪家便宜,閥門" src="https://tyunfile.71360.com/UploadFile/lanfatonyon/637408829258535820/6728321.png"></div><p style="text-indent:25px">關(guān)于各種閥門的特點(diǎn)：球閥球閥是由旋塞閥演變而來。它具有相同的旋轉(zhuǎn)90度提動(dòng)作，不同的是旋塞體是球體，有圓形通孔或通道通過其軸線。球面和通道口的比例應(yīng)該是這樣的，即當(dāng)球旋轉(zhuǎn)90度時(shí)，在進(jìn)、出口處應(yīng)全部呈現(xiàn)球面，從而截?cái)嗔鲃?dòng)。球閥只需要用旋轉(zhuǎn)90度的操作和很小的轉(zhuǎn)動(dòng)力矩就能關(guān)閉嚴(yán)密。完全平等的閥體內(nèi)腔為介質(zhì)提供了阻力很小、直通的流道。通常認(rèn)為球閥較適宜直接做開閉使用，但近來的發(fā)展已將球閥設(shè)計(jì)成使它具有節(jié)流和控制流量之用。球閥的主要特點(diǎn)是本身結(jié)構(gòu)緊湊，易于操作和維修，適用于水、溶劑、酸和天然氣等一般工作介質(zhì)，而且還適用于工作條件惡劣的介質(zhì)，如氧氣、過氧化氫、甲烷和乙烯等。球閥閥體可以是整體的，也可以是組合式的。</p><p style="text-indent:25px">關(guān)于各種閥門的特點(diǎn)和區(qū)別：閘閥、截止閥、蝶閥各適用于什么場(chǎng)合：這三種閥按開關(guān)難易排列：截止閥、閘閥、蝶閥；按阻力大小排列：截止閥、蝶閥、閘閥；按關(guān)閉嚴(yán)密排列：截止閥、蝶閥、閘閥；按價(jià)格貴賤排列：截止閥、蝶閥、閘閥；(特種蝶閥除外)這三種閥都屬于驅(qū)動(dòng)閥，根據(jù)上述特點(diǎn)不難看出，截止閥主要用于小口徑管道(支管)或管路未端的啟閉和流量調(diào)節(jié)；蝶閥用于支干管的啟閉和流量調(diào)節(jié)；閘閥用于干管的啟閉，一般不用于流量調(diào)節(jié)。平衡閥有幾種，較早出來的是靜態(tài)平衡閥，可以進(jìn)行精確的手動(dòng)調(diào)節(jié)，可以連接儀器測(cè)量阻力并換算成流量，是一種局部阻力系數(shù)可以精確調(diào)節(jié)的閥門。通常設(shè)在干管上，要求高的也可以設(shè)在支干管或設(shè)備入口處。缺點(diǎn)是只能在額定流量時(shí)平衡系統(tǒng)阻力，在末端設(shè)電動(dòng)閥改變阻力時(shí)水力平衡受影響。運(yùn)行中的閥門應(yīng)完好，法蘭和支架上的螺栓齊全，螺紋無損，沒有松動(dòng)現(xiàn)象。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="大同閥門哪家便宜,閥門" src="https://tyunfile.71360.com/UploadFile/lanfatonyon/637408829227775070/2697520.png"></div><p style="text-indent:25px">幾種常用管道閥門的安裝：1.止回閥止回閥又稱逆止閥、單向閥，是一種在閥門前后壓力差作用下自動(dòng)啟閉的閥門，其作用是使介質(zhì)只做一個(gè)方向的流動(dòng)，而阻止介質(zhì)逆向往回流動(dòng)。止回閥按其結(jié)構(gòu)不同，有升降式、旋啟式和蝶形對(duì)夾式。升降式止回閥又有臥式與立式之分。安裝止回閥時(shí)，也應(yīng)注意介質(zhì)的流向，不能裝反。 2.減壓閥減壓閥是通過調(diào)節(jié)，將進(jìn)口壓力減至某一需要的出口壓力，并依靠介質(zhì)本身的能量，使出口壓力自動(dòng)保持穩(wěn)定的閥門。從流體力學(xué)的觀點(diǎn)看，減壓閥是一個(gè)局部阻力可以變化的節(jié)流元件，即通過改變節(jié)流面積，使流速及流體的動(dòng)能改變，造成不同的壓力損失，從而達(dá)到減壓的目的。然后依靠控制與調(diào)節(jié)系統(tǒng)的調(diào)節(jié)，使閥后壓力的波動(dòng)與彈簧力相平衡，使閥后壓力在一定的誤差范圍內(nèi)保持恒定。注脂時(shí)，不要忽略閥桿部位的注脂。閥軸部位有滑動(dòng)軸套或填料，也需要保持潤(rùn)滑狀態(tài)。甌北閥門哪家便宜</p><p style="text-indent:25px">應(yīng)對(duì)閥門的密封性能進(jìn)行試驗(yàn)，確保其性能。大同閥門哪家便宜</p><p style="text-indent:25px">手動(dòng)閥門：手動(dòng)閥門是較基本的驅(qū)動(dòng)方式的閥門。它包括用手輪、手柄或板手直接驅(qū)動(dòng)和通過傳動(dòng)機(jī)構(gòu)進(jìn)行驅(qū)動(dòng)兩種。當(dāng)閥門的啟力矩較大時(shí)，可通過齒輪或蝸輪傳動(dòng)進(jìn)行驅(qū)動(dòng)，以達(dá)到省略的目的。齒輪傳動(dòng)分直齒圓柱齒輪傳動(dòng)和錐齒傳動(dòng)。齒輪傳動(dòng)減速比小，適用于閘閥和截止閥，蝸輪傳動(dòng)減速比較大，適用于旋塞閃、球閥和蝶閥。閘板閥門閘板閥門也叫閘板節(jié)門，它的特點(diǎn)是比較嚴(yán)密，常用于上水管道和熱水供暖管道，由于閘板六門開啟后不宜擋住異物，所以被用作供暖管綱的排污閥和小型鍋爐（如立式橫水管鍋爐）的排污閥。這種閥門習(xí)慣上不用在蒸汽管道上，因?yàn)閴毫^高時(shí)，閘板閥門會(huì)因單面承受壓力而難于開啟。閘板閥門適合于在全開或全關(guān)的狀態(tài)下工作，適宜用它調(diào)節(jié)流量。如果閘板長(zhǎng)時(shí)期處于半開關(guān)的狀態(tài)下工作，閘板的密封面會(huì)因受介質(zhì)沖刷而變得不嚴(yán)密。大同閥門哪家便宜</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2879727.html</p></div></div></div></div></div><div id="qubtvxe" class="page-right twoColRt"><div id="bqnf23n" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="cwogikr" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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