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class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/Ydfm123/637230864797265625/1727963.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="clcj83z" 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>新疆維吾爾自治區(qū)</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>新疆鑄鋼球閥電話</p><p><span>***更新：</span>2020-06-21 16:24:51</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="xqpwio8" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">新疆遠大通用閥門有限公司</a></p><p><span>聯(lián)系人：</span>李嘉豪</p><p><span>郵箱: </span>1183099099@qq.com</p><p><span>電話: </span>18999955968</p><p><span>傳真: </span>0991_6877477</p><p><span>網(wǎng)址: </span>http://www.xjyuanda.com</p><p><span>手機: </span>0991-6877477</p><p><span>地址: </span>烏魯木齊市高新技術(shù)產(chǎn)業(yè)開發(fā)區(qū)（新市區(qū)）清水街213號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="7hykqsj" class="page-proshow02"><p class="title">詳細說明</p><div id="l3s3sjv" class="box"><p><p>使用特性：它確定了閥門的主要使用性能和使用范圍，屬于閥門使用特性的有：閥門的類別(閉路閥門、調(diào)節(jié)閥門、安全閥門等)；產(chǎn)品類型(閘閥、截止閥、蝶閥、球閥等)；閥門主要零件(閥體、閥蓋、閥桿、閥瓣、密封面)的材料；閥門傳動方式等。2、結(jié)構(gòu)特性：它確定了閥門的安裝、維修、保養(yǎng)等方法的一些結(jié)構(gòu)特性，屬于結(jié)構(gòu)特性的有：閥門的結(jié)構(gòu)長度和總體高度、與管道的連接形式(法蘭連接、螺紋連接、夾箍連接、外螺紋連接、焊接端連接等)；密封面的形式(鑲?cè)?、螺紋圈、堆焊、噴焊、閥體本體)；閥桿結(jié)構(gòu)形式(旋轉(zhuǎn)桿、升降桿)等。選擇閥門的步驟和依據(jù)大體如下：一、選擇步驟1、明確閥門在設備或裝置中的用途，確定閥門的工作條件：適用介質(zhì)、工作壓力、工作溫度等等。2、確定與閥門連接管道的公稱通徑和連接方式：法蘭、螺紋、焊接等。3、確定操作閥門的方式：手動、電動、電磁、氣動或液動、電氣聯(lián)動或電液聯(lián)動等。4，新疆鑄鋼球閥電話、根據(jù)管線輸送的介質(zhì)、工作壓力、工作溫度確定所選閥門的殼體和內(nèi)件的材料：灰鑄鐵，新疆鑄鋼球閥電話、可鍛鑄鐵、球墨鑄鐵、碳素鋼、合金鋼，新疆鑄鋼球閥電話、不銹耐酸鋼、銅合金等。5、選擇閥門的種類：閉路閥門、調(diào)節(jié)閥門、安全閥門等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="新疆鑄鋼球閥電話" src="https://tyunfile.71360.com/UploadFile/Ydfm123/637230864797265625/1727963.jpg"></div><p> 截止閥的閥瓣一旦處于開啟狀況，它的閥座和閥瓣密封面之間就不再的接觸，并具有非?？煽康那袛鄤幼?，合得這種閥門非常適合作為介質(zhì)的切斷或調(diào)節(jié)及節(jié)流使用。截止閥一旦處于開啟狀態(tài)，它的閥座和閥瓣密封面之間就不再有接觸，因而它的密封面機械磨損較小，由于大部分截止閥的閥座和閥瓣比較容易修理或更換密封元件時無需把整個閥門從管線上拆下來，這對于閥門和管線焊接成一體的場合是很適用的。介質(zhì)通過此類閥門時的流動方向發(fā)生了變化，因此截止閥的流動阻力較高于其它閥門。常用的截止閥有以下幾種：1）角式截止閥；在角式截止閥中，流體只需改變一次方向，以致于通過此閥門的壓力降比常規(guī)結(jié)構(gòu)的截止閥小。2）直流式截止閥；在直流式或Y形截止閥中，閥體的流道與主流道成一斜線，這樣流動狀態(tài)的破壞程度比常規(guī)截止閥要小，因而通過閥門的壓力損失也相應的小了。3）柱塞式截止閥：這種形式的截止閥是常規(guī)截止閥的變型。在該閥門中，閥瓣和閥座通常是基于柱塞原理設計的。閥瓣磨光成柱塞與閥桿相連接，密封是由套在柱塞上的兩個彈性密封圈實現(xiàn)的。兩個彈性密封圈用一個套環(huán)隔開，并通過由閥蓋螺母施加在閥蓋上的載荷把柱塞周圍的密封圈壓牢。彈性密封圈能夠更換。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="新疆鑄鋼球閥電話" src="https://tyunfile.71360.com/UploadFile/Ydfm123/637230864806953125/6397088.jpg"></div><p> 流體從左向右流動時，閥芯被開啟，形成通路，反向流動時閥芯被壓緊到閥座上而被關(guān)閉，對夾式止回閥可多位安裝、體積小、重量輕、結(jié)構(gòu)緊湊。[1]（三）調(diào)節(jié)閥閥門前后壓差一定，普通閥門的開度在較大范圍內(nèi)變化時，其流量變化不大，而到某一開度時，流量急劇變化，即調(diào)節(jié)性能不佳。調(diào)節(jié)閥可以按照信號的方向和大小，改變閥芯行程來改變閥門的阻力數(shù)，從而達到調(diào)節(jié)流量目的的閥門。調(diào)節(jié)閥分手動調(diào)節(jié)閥和自動調(diào)節(jié)閥，而手動或自動調(diào)節(jié)閥又分許多種類，其調(diào)節(jié)性能也是不同的。自動調(diào)節(jié)閥有自力式流量調(diào)節(jié)閥和自力式壓差調(diào)節(jié)閥等。[1]（四）真空類真空類包括真空球閥、真空擋板閥、真空充氣閥、氣動真空閥等。其作用是在真空系統(tǒng)中，用來改變氣流方向，調(diào)節(jié)氣流量大小，切斷或接通管路的真空系統(tǒng)元件稱為真空閥門。（五）特殊用途類特殊用途類包括清管閥、放空閥、排污閥、排氣閥、過濾器等。排氣閥是管道系統(tǒng)中必不可少的輔助元件，應用于鍋爐、空調(diào)、石油天然氣、給排水管道中。往往安裝在制高點或彎頭等處，排除管道中多余氣體、提高管道路使用效率及降低能耗。閥門按主要參數(shù)按公稱壓力：（1）真空閥：指工作壓力低于標準大氣壓的閥門。（2）低壓閥：指公稱壓力PN≤的閥門。。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/340068.html</p></div></div></div></div></div><div id="hgxooqm" class="page-right twoColRt"><div id="3hnuvws" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="nq2uls8" class="recomPic likePro"><a 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