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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>上海自動回流閥直銷公司有哪些,自動再循環(huán)閥</p><p><span>***更新：</span>2021-01-28 15:21:43</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="b3wy7zq" 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="3yacyfh" class="page-proshow02"><p class="title">詳細說明</p><div id="akmtvrn" class="box"><p><p style="text-indent:25px"> 現(xiàn)代工業(yè)設(shè)備工藝過程中，要求自動再循環(huán)閥基本上都是在變流量的狀態(tài)下工作，這就需要在工藝過程中有設(shè)置自動控制設(shè)備(離心自動再循環(huán)閥)。然而離心泵在低于負荷運行時會出現(xiàn)過熱、嚴(yán)重噪聲、不穩(wěn)定和氣蝕而引起泵的損壞。這是需要一種自動再循環(huán)設(shè)備，在泵低于負荷運行時，通過旁路實現(xiàn)泵小流量回流循環(huán)。自動再循環(huán)閥用于防止各種離心泵在低于負荷運行時由于過熱，上海自動回流閥直銷公司有哪些、嚴(yán)重噪聲、不穩(wěn)定和氣蝕而引起的損壞。只要泵的流量低于一定數(shù)值，旁路回流閥的閥口就會自動的打開，上海自動回流閥直銷公司有哪些，上海自動回流閥直銷公司有哪些，以此來保證液泵所必須的小流量。自動再循環(huán)閥在低壓下，可以實現(xiàn)良好的密封.上海自動回流閥直銷公司有哪些</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海自動回流閥直銷公司有哪些,自動再循環(huán)閥" src="https://tyunfile.71360.com/UploadFile/shdatian/637343242524921875/2014207.png"></div><p style="text-indent:25px"> 自動再循環(huán)閥特點：自動再循環(huán)閥具有結(jié)構(gòu)簡單、體積小、重量輕、材料耗用省，安裝尺寸小，開關(guān)迅速、90°往復(fù)回轉(zhuǎn)，驅(qū)動力矩小等特點，用于截斷、接通、調(diào)節(jié)管路中的介質(zhì)，具有良好的流體控制特性和關(guān)閉密封性能。自動再循環(huán)閥可以運送泥漿，在管道口積存液體少。低壓下，可以實現(xiàn)良好的密封。調(diào)節(jié)性能好。蝶板的流線型設(shè)計，使流體阻力損失小，可謂是一種節(jié)能型產(chǎn)品。閥桿為通桿結(jié)構(gòu)，經(jīng)過調(diào)質(zhì)處理，有良好的綜合力學(xué)性能和抗腐蝕性，抗擦傷性。自動再循環(huán)閥啟閉時閥桿只作旋轉(zhuǎn)運動而不作升降運行，閥桿的填料不易破壞，密封可靠。與蝶板錐銷固定，外伸端為防沖出型設(shè)計，以免在閥桿與蝶板連接處意外斷裂時閥桿崩出。自動循環(huán)泵保護閥批發(fā)報價自動再循環(huán)閥用于離心泵小流量的自動再循環(huán)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海自動回流閥直銷公司有哪些,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)閥處于徹底開啟方位時，蝶板厚度是介質(zhì)流經(jīng)閥體時的阻力，因而通過該閥門所產(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，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。如果要求自動再循環(huán)閥作為流量控制運用，主要的是正確選擇閥門的尺度和類型。自動再循環(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)。</p><p style="text-indent:25px"> 自動再循環(huán)閥構(gòu)造簡單、體積小、重量輕，只由少數(shù)幾個零件組成。而且只需旋轉(zhuǎn)90°即可快速啟閉，操作簡單，同時該閥門具有良好的流體控制特性。自動再循環(huán)閥處于完整開啟位置時，蝶板厚度是介質(zhì)流經(jīng)閥體時獨一的阻力，因而經(jīng)過該閥門所產(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，密封圈能夠鑲嵌在閥體上或附在蝶板周邊。采用金屬密封的閥門普通比彈性密封的閥門壽命長，但很難做到完整密封。金屬密封能順應(yīng)較高的工作溫度，彈性密封則具有受溫度限制的缺點。自動再循環(huán)閥安裝前應(yīng)檢查閥門內(nèi)腔和密封面，如有污垢，應(yīng)使用清潔布擦拭干凈。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海自動回流閥直銷公司有哪些,自動再循環(huán)閥" src="https://tyunfile.71360.com/UploadFile/shdatian/637343242805693359/4708070.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)閥防止離心泵在低負載下由于過熱，噪音、振動帶來的損壞。上海流量保護閥廠家有哪些</p><p style="text-indent:25px">自動再循環(huán)閥是現(xiàn)代工業(yè)過程中優(yōu)先考慮的泵的保護方式。上海自動回流閥直銷公司有哪些</p><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;上海自動回流閥直銷公司有哪些</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3052093.html</p></div></div></div></div></div><div id="2ho32yu" class="page-right twoColRt"><div id="k2z8pfm" class="box01 margin10 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