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當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/second-_jydq/">家用電器</a>?<a href="http://www.cdcfah.com/cp/third-jydq_jydqcpdljm/">家用電器產(chǎn)品代理加盟</a>?克拉瑪依鍋爐新疆欣盛達龍環(huán)保設(shè)備供應(yīng)</p><div id="ds77bnp" class="leftbox clearfix"><h1>克拉瑪依鍋爐新疆欣盛達龍環(huán)保設(shè)備供應(yīng)</h1><div id="3fwyamj" class="proBig"><div id="srdkcer" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xsdlhb/637263778033720703/7376465.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="oi2rij7" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xsdlhb/637263778033720703/7376465.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="yc2jgs8" 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>克拉瑪依鍋爐</p><p><span>***更新：</span>2020-06-01 20:39:12</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="luzgsj7" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">新疆欣盛達龍環(huán)保設(shè)備有限公司</a></p><p><span>聯(lián)系人：</span>楊永昌</p><p><span>郵箱: </span>2806621955@qq.com</p><p><span>電話: </span>13609986517</p><p><span>傳真: </span>0991_8790931</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0991-8790931</p><p><span>地址: </span>烏魯木齊市太原路188號亞中機電市場261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="7hoqxe7" class="page-proshow02"><p class="title">詳細說明</p><div id="dc3t2fh" class="box"><p><p> <span style="font-size:12px;"> 則沿程損失大；還與流速的平方值成正比關(guān)系。當然計算比較繁瑣，簡單的方法可以估算。管路局部損失是水流在管道中流過底閥、閥門、彎頭、異徑管等配件過程中，由于局部裝置使流型變化；流速方向和大小都改變，而且在流動中出現(xiàn)漩渦，使水流互相碰撞、沖擊。這種局部阻力而引起的水力損失叫做局部損失，克拉瑪依鍋爐。局部損失的大小與流過管道配件處的水流速度平方值成正比，同時，也與配件的形狀和數(shù)量有關(guān)。配件斷面形狀變化大，克拉瑪依鍋爐，數(shù)量多，則局部損失就愈大，克拉瑪依鍋爐。當管路布置方案確定以后，一般都要經(jīng)過計算方法求得管路損失揚程，然后確定水泵站的設(shè)計揚程，才能進行水泵選型。</span> </p> <p> <br /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="克拉瑪依鍋爐" src="https://tyunfile.71360.com/WaterMark/UploadFile/xsdlhb/637263778033720703/7376465.png"></div><p> 大家都知道，管道是一種固體物，水是容易流動的物質(zhì)，如果管道內(nèi)的水是流動的，必定有一部分能量轉(zhuǎn)化為熱能而“消滅”，也就是丟失了一部分水壓（或稱揚程），這是客觀事物的反映，是水流運動的必然規(guī)律。通常，我們將這種能量轉(zhuǎn)變的現(xiàn)象，稱之為能量損失（或稱水力損失、損失揚程）。它以米為計算單位。原藝術(shù)論封面設(shè)計管道圖管道阻力對揚程的影響有多大？有些用戶經(jīng)過測量，雖然蓄水池或水塔到水源水面的垂直距離還略小于水泵揚程，但還是提水量小或提不上水。其原因常是管道太長、水管彎道多，水流在管道中阻力損失過大。一般情況下90度彎管比120度彎管阻力大，每一90度彎管揚程損失約，每20米管道的阻力可使揚程損失約1米。此外，有部分用戶還隨意更改水泵進、出管的管徑，這些對揚程也有一定的影響。那，管道阻力對揚程的影響究竟有多大呢？下面，我們來看下方表格你是否清楚管道水流產(chǎn)生水力損失的原因？**一、是管壁粗糙的阻滯作用。二、是水流各流層間的相對運動。三、是管件內(nèi)水流局部急劇變化形成的漩渦。管路（網(wǎng)）水力損失由沿程和局部兩部分組成。在工程上，我們必須要計算知道它的數(shù)量多少，才能正確地選用水泵，確定所需要的水泵揚程。 </p> <p> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="克拉瑪依鍋爐" src="https://tyunfile.71360.com/WaterMark/UploadFile/xsdlhb/637263778281240234/4954627.png"></div><p> 測量得知）30%~50%，管徑小、管路短取大值;管徑大、管路長取小值。可利用現(xiàn)有軟件,計算出管路沿程損失和管路局部損失,如義維開發(fā)的的選型軟件系統(tǒng),以方便計算。液體在直管中流動時的壓力損失液體在直管中流動時的壓力損失是由液體流動時的摩擦引起的，稱之為沿程壓力損失，它主要取決于管路的長度、內(nèi)徑、液體的流速和粘度等。液體的流態(tài)不同，沿程壓力損失也不同。液體在圓管中層流流動在液壓傳動中**為常見，因此，在設(shè)計液壓系統(tǒng)時，常希望管道中的液流保持層流流動的狀態(tài)。流體在管道內(nèi)流動的沿程壓力損失一.層流層流時的壓力損失在液壓傳動中，液體的流動狀態(tài)多數(shù)是層流流動，在這種狀態(tài)下液體流經(jīng)直管的壓力損失可以通過理論計算求得。圓管中的層流(1)液體在流通截面上的速度分布規(guī)律。如上圖所示，液體在直徑d的圓管中作層流運動，圓管水平放置，在管內(nèi)取一段與管軸線重合的小圓柱體，設(shè)其半徑為r，長度為l。在這一小圓柱體上沿管軸方向的作用力有：左端壓力p1，右端壓力p2，圓柱面上的摩擦力為Ff。則其受力平衡方程式為：由式(2-6)可知：式中：μ為動力粘度。因為速度增量du與半徑增量dr符號相反，則在式中加一負號。另外，Δp＝p1-p2把Δp、式(2-45)代入式(2-44)。 </p> <p> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="克拉瑪依鍋爐" src="https://tyunfile.71360.com/WaterMark/UploadFile/xsdlhb/637263778245136718/6788996.png"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/110511.html</p></div></div></div></div></div><div id="g8zg3c3" class="page-right twoColRt"><div id="m78bvcb" class="box01 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