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id="etvced7" class="proBig"><div id="sqdfcol" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdatian/637343242885566406/8640380.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="gvheqce" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdatian/637343242885566406/8640380.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="m78chjq" 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>浙江排空止回閥作用有哪些,自動(dòng)再循環(huán)閥</p><p><span>***更新：</span>2021-02-05 10:17:21</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="ipw3ldp" 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="sm37urt" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="nhwskgs" class="box"><p><p style="text-indent:25px"> 自動(dòng)再循環(huán)閥升降式水平瓣自動(dòng)再循環(huán)閥應(yīng)安裝在水平管道上。自動(dòng)再循環(huán)閥有-個(gè)介鉸鏈機(jī)構(gòu)，浙江排空止回閥作用有哪些，還有一個(gè)像i]-樣的閥瓣自由地靠在傾斜地閥座表面上。為了確保閥辦每次，都能到達(dá)閥座面地合適位置，閥瓣設(shè)置在鉸鏈機(jī)構(gòu)，以便閥瓣具有，足夠旋啟空間，浙江排空止回閥作用有哪些，并使閥瓣真正地、詳細(xì)的與閥座接觸。閥瓣可以全部用金屬制成，也可以在金屬上鑲嵌皮革、橡膠、或者采用合成覆蓋面，這取決于適用性能的要求。旋啟式自動(dòng)再循環(huán)閥在完全打開的狀況，流體壓力幾乎不受阻礙，浙江排空止回閥作用有哪些，因此通過閥的壓力降將對(duì)較小。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.浙江排空止回閥作用有哪些</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江排空止回閥作用有哪些,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)閥的錐面密封:自動(dòng)再循環(huán)閥密封面制成很小的圓錐面和閥瓣是可以靈活轉(zhuǎn)動(dòng)的、硬度較高的球體，密封省力、可靠。只適用于較小口徑閥。自動(dòng)再循環(huán)閥密封材質(zhì)，非金屬材質(zhì)密封。軟密封自動(dòng)再循環(huán)閥(聚四氟、橡膠、尼龍、柔性石墨)。硬密封自動(dòng)再循環(huán)閥(氧化鋁、氧化鋯等陶瓷材料)。金屬材質(zhì)密封自動(dòng)再循環(huán)閥。自動(dòng)再循環(huán)閥密封原理，當(dāng)介質(zhì)從閥瓣下方流入時(shí)，所施加的自動(dòng)再循環(huán)閥密封力必需等于或大于密封面上所產(chǎn)生的必需比壓和介質(zhì)向上的作用力之和。自動(dòng)再循環(huán)閥出廠時(shí)已將操控組織的啟、閉行程調(diào)好。為避免電源接通是方向搞錯(cuò)，用戶在初次接通電源后，先啟開手動(dòng)至半開方位，在按電動(dòng)開關(guān)查看指示盤方向與閥門閉方向一致即可。江蘇自動(dòng)再循環(huán)閥廠家報(bào)價(jià)自動(dòng)再循環(huán)閥不受系統(tǒng)故障影響。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江排空止回閥作用有哪些,自動(dòng)再循環(huán)閥" src="https://tyunfile.71360.com/UploadFile/shdatian/637343243029707031/6971853.png"></div><p style="text-indent:25px"> 隨著防化學(xué)腐蝕的合成橡膠在自動(dòng)再循環(huán)閥上的應(yīng)用，自動(dòng)再循環(huán)閥的性能得以提高。由于合成橡膠具有耐腐蝕、抗沖蝕、尺寸穩(wěn)定、回彈性好、易于成形、成本低廉等特點(diǎn)，并可以根據(jù)不同的使用要求選擇不同性能的合成橡膠，以滿足自動(dòng)再循環(huán)閥的使用工況條件。由于聚四氟乙烯(PTFE)具有耐腐蝕性強(qiáng)、性能穩(wěn)定、不易老化、摩擦系數(shù)低、易于成形、尺寸穩(wěn)定，并且可以通過填充、添加適當(dāng)?shù)牟牧细纳破渚C合性能，得到強(qiáng)度更好、摩擦系數(shù)更低的自動(dòng)再循環(huán)閥密封材料，克服了合成橡膠的局限性。</p><p style="text-indent:25px"> 自動(dòng)再循環(huán)閥集四種功能于一體:1、流量感知: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)此流量來確定主閥瓣和旁路閥瓣的位置.2、再循環(huán)控制:可以將泵正常運(yùn)行所需要的小流量通過旁路吸入到存儲(chǔ)裝置中,調(diào)節(jié)水泵H-Q特性,實(shí)現(xiàn)再循環(huán).3、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。4、止回:還具有止回閥的作用,防止液體回流到泵體中。自動(dòng)再循環(huán)閥用于保護(hù)離心泵，防止泵在低流量工況下由于過熱、嚴(yán)重噪音、不穩(wěn)定和氣蝕而引起的損壞。自動(dòng)再循環(huán)閥具有止回功能，阻止介質(zhì)回流到泵內(nèi)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江排空止回閥作用有哪些,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)閥特點(diǎn)：防氣蝕多級(jí)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(jí)PN16-PN420，口徑DN25-DN500；可選擇增加手動(dòng)旁路操作功能，以備故障時(shí)使用。自動(dòng)再循環(huán)閥工作原理：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。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。自動(dòng)再循環(huán)閥的操作過程不復(fù)雜，不需要過分的專業(yè)人員操作.江蘇流量保護(hù)閥生產(chǎn)廠家哪家好</p><p style="text-indent:25px">自動(dòng)再循環(huán)閥可以運(yùn)送泥漿，在管道口積存液體少.浙江排空止回閥作用有哪些</p><p style="text-indent:25px"> 自動(dòng)再循環(huán)閥工作原理可用3種狀態(tài)來描述：當(dāng)主閥完全關(guān)閉、旁通處于完全打開位置時(shí)，此時(shí)泵處于小連續(xù)流量工況，可有效保護(hù)泵不致發(fā)生“氣蝕”；隨著主路止回閥逐漸開啟，旁通逐漸關(guān)閉，工藝流量和再循環(huán)流量之和大于泵的小連續(xù)流量；隨著工藝流量增加，當(dāng)主閥處于全開位置時(shí)，旁通完全關(guān)閉。自動(dòng)再循環(huán)閥選型：1、主路全開壓降介質(zhì)流過閥門產(chǎn)生的壓降與閥門入口與節(jié)流處的面積比有關(guān)，且在相同的流速條件下隨面積比的增大而快速增加。因此，對(duì)于相同的工況，能達(dá)到全開的閥門實(shí)際壓降是低的。浙江排空止回閥作用有哪些</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3176002.html</p></div></div></div></div></div><div id="h3e3nfm" class="page-right twoColRt"><div id="ppmewiz" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="uewtlxo" 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" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 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