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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="xgd2onj" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/sdkgfm/2019/11/637087462749484530/6370874627494845301249292.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="fuwq2ne" 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>山東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>甘肅過(guò)濾器閥門全國(guó)發(fā)貨</p><p><span>***更新：</span>2020-06-23 14:39:21</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="wr3y9wy" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">山東凱鋼閥門管件有限公司</a></p><p><span>聯(lián)系人：</span>王魯凱</p><p><span>郵箱: </span>694088038@qq.com</p><p><span>電話: </span>18953964119</p><p><span>傳真: </span>0539_8153453</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0539-8153453</p><p><span>地址: </span>山東省臨沂市羅莊區(qū)盛莊街道化武路與王莊路交匯盛翔五金城3棟42號(hào)</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="s3x7nkm" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="b3lnfmo" class="box"><p><p> 分類 </p> <p> 折疊按作用和用途分類 </p> <p> （1）截?cái)囝悾喝玳l閥、截止閥、旋塞閥、球閥、蝶閥、針型閥、隔膜閥等。截?cái)囝愰y門又稱閉路閥，截止閥，其作用是接通或截?cái)喙苈分械慕橘|(zhì)。 </p> <p> (2) 止回類：如止回閥，止回閥又稱單向閥或逆止閥，止回閥屬于一種自動(dòng)閥門，其作用是防止管路中的介質(zhì)倒流，甘肅過(guò)濾器閥門全國(guó)發(fā)貨、防止泵及驅(qū)動(dòng)電機(jī)反轉(zhuǎn)，以及容器介質(zhì)的泄漏。水泵吸水關(guān)的底閥也屬于止回閥類。 </p> <p> (3) 安全類：如安全閥、防爆閥等。安全閥的作用是防止管路或裝置中的介質(zhì)壓力超過(guò)規(guī)定數(shù)值，從而達(dá)到安全保護(hù)的目的。 </p> <p> (4) 調(diào)節(jié)類：如調(diào)節(jié)閥、節(jié)流閥和減壓閥，其作用是調(diào)節(jié)介質(zhì)的壓力、流量等參數(shù)，甘肅過(guò)濾器閥門全國(guó)發(fā)貨。 </p> <p> (5) 分流類：如分配閥、三通閥、疏水閥。其作用是分配、分離或混合管路中的介質(zhì)。 </p> <p> (6）特殊用途類：如清管閥、放空閥、排污閥、排氣閥、過(guò)濾器等。排氣閥是管道系統(tǒng)中必不可少的輔助元件，廣泛應(yīng)用于鍋爐，甘肅過(guò)濾器閥門全國(guó)發(fā)貨、空調(diào)、石油天然氣、給排水管道中。往往安裝在制高點(diǎn)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。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅過(guò)濾器閥門全國(guó)發(fā)貨" src="http://tyunfile.71360.com/UpLoadFile/sdkgfm/2019/11/637087462749484530/6370874627494845301249292.jpg"></div><p> 密封性能要求 </p> <p> 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**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合處；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(shuō)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(lái)說(shuō)，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)造成惡事件。對(duì)于易燃易爆、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。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅過(guò)濾器閥門全國(guó)發(fā)貨" src="http://tyunfile.71360.com/UpLoadFile/sdkgfm/2019/11/637087462614475130/6370874626144751308413369.jpg"></div><p> 七、內(nèi)自緊連接： </p> <p> 以上各種連接形式，都是利用外力來(lái)抵消介質(zhì)壓力，實(shí)現(xiàn)密封的。下面介紹利用介質(zhì)壓力進(jìn)行自緊的連接形式。它的密封圈裝在內(nèi)錐體處，跟介質(zhì)相向的一面成一定角度，介質(zhì)壓力傳給內(nèi)錐體，又傳遞給密封圈，在一定角度的錐面上，產(chǎn)生兩個(gè)分力，一個(gè)與閥體中心線平行向外，另一個(gè)壓向閥體內(nèi)壁。后面這個(gè)分力便是自緊力。介質(zhì)壓力愈大，自緊力也愈大。所以這種連接形式，適合于高壓閥門。它比法蘭連接，要節(jié)省許多材料和人力，但也需要一定的預(yù)緊力，以便在閥內(nèi)壓力不高時(shí)，使用可靠。利用自緊密封原理做成的閥門，一般是高壓閥門。 </p> <p> 閥門連接的形式還很多，例如有的不必拆除的小閥門，跟管子焊接在一起；有的非金屬閥門，采用承插式連接，等等。閥門使用者要根據(jù)具休情況具體對(duì)待。 </p></p><br /><p>文章來(lái)源地址: http://m.cdcfah.com/cp/363072.html</p></div></div></div></div></div><div id="88f3gyl" class="page-right twoColRt"><div id="mgikryv" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="tif8skc" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img 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