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</span>http://www.yeer-tec.com</p><p><span>手機(jī): </span>021-57488360</p><p><span>地址: </span>海灣旅游區(qū)莘奉公路4960號110室</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="53gsa1e" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="wg8tcwb" class="box"><p><p style="text-indent:25px">流量計（電磁流量計、渦街流量計、渦輪流量計）在冬天，特別北方的冬天，跟著氣溫的下降，當(dāng)被測介質(zhì)經(jīng)過丈量管線傳送到變送器時，常呈現(xiàn)環(huán)境溫度過低發(fā)作凍住、凝固、分出結(jié)晶等表象，因環(huán)境溫度過低而超出所運(yùn)用外表的正常作業(yè)溫度區(qū)間，直接影響到外表丈量顯現(xiàn)的準(zhǔn)確性。而壓力、流量、液位、溫度等各類外表點(diǎn)，其丈量介質(zhì)多為液體，受低溫的影響，更簡單形成丈量誤差，嚴(yán)重者可能引發(fā)中毒、火災(zāi)、爆破等安全事故。每年一入冬，均速管流量計，儀器外表的防寒防凍作業(yè)顯得尤為重要。而一些大型的儀器外表用戶更是紛繁提早做好預(yù)備應(yīng)對，比方電廠，均速管流量計、石油、化工、水廠等都擬定了適合于自個企業(yè)的外表防寒防凍作業(yè)的準(zhǔn)則，并對外表的進(jìn)行防凍，均速管流量計、排污處理等等各個方面的作業(yè)。這一期，咱們就來評論一下外表用戶怎么進(jìn)行冬天外表防寒防凍作業(yè)。要做好儀器外表的防凍，產(chǎn)品的選型是一個要害，在前期設(shè)備外表時，外表用戶就應(yīng)該思考外表地址的工況條件，選帶保溫設(shè)備型外表。依據(jù)外表的種類用處及擬設(shè)備地理位置，提出該外表的保溫防凍需要，再提交與廠家來處理。渦輪流量計的抗雜質(zhì)能力強(qiáng)。均速管流量計</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="均速管流量計,流量計" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039091991792/5193322.png"></div><p style="text-indent:25px">氣體存在于流量計計量腔內(nèi)造成流量計讀數(shù)不準(zhǔn)確，目前單位使用的流量計大部分都是容積式流量計，計量的是原油的體量，不管進(jìn)入計量腔內(nèi)的物質(zhì)是氣體、液體、還是固體均會被計量，即：流量計讀數(shù)＝原油體積+含水體積+氣體體積，這樣一來就導(dǎo)致了流量計的讀數(shù)失真。流量計旁通管道閥門的泄露會導(dǎo)致計量不準(zhǔn)確，流量計在長期使用過程中會出現(xiàn)故障，為了方便故障的維修，所以流量計通常都裝有旁通管道，這樣一來維修起來就比較簡便快捷。均速管流量計電磁流量計的測量原理不依賴流量的特性。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="均速管流量計,流量計" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039193935092/5614815.png"></div><p style="text-indent:25px">流量計英文名稱是flowmeter，全國科學(xué)技術(shù)名詞審定會把它定義為：指示被測流量和（或）在選定的時間間隔內(nèi)流體總量的儀表。簡單來說就是用于測量管道或明渠中流體流量的一種儀表。流量計又分為有差壓式流量計、轉(zhuǎn)子流量計、節(jié)流式流量計、細(xì)縫流量計、容積流量計、電磁流量計、超聲波流量計等。按介質(zhì)分類：液體流量計和氣體流量計。計量是工業(yè)生產(chǎn)的眼睛。流量計量是計量科學(xué)技術(shù)的組成部分之一，它與國民經(jīng)濟(jì)、**建設(shè)、科學(xué)研究有密切的關(guān)系。做好這一工作，對保證產(chǎn)品質(zhì)量、提高生產(chǎn)效率、促進(jìn)科學(xué)技術(shù)的發(fā)展都具有重要的作用，特別是在能源危機(jī)、工業(yè)生產(chǎn)自動化程度愈來愈高的當(dāng)今時代，流量計在國民經(jīng)濟(jì)中的地位與作用更加明顯。</p><p style="text-indent:25px">容積式流量計，又稱定排量流量計，簡稱PD流量計，在流量儀表中是精度較高的一類。它利用機(jī)械測量元件把流體連續(xù)不斷地分割成單個已知的體積部分，根據(jù)測量室逐次重復(fù)地充滿和排放該體積部分流體的次數(shù)來測量流體體積總量。容積式流量計按其測量元件分類，可分為橢圓齒輪流量計、刮板流量計、雙轉(zhuǎn)子流量計、旋轉(zhuǎn)活塞流量計、往復(fù)活塞流量計、圓盤流量計、液封轉(zhuǎn)筒式流量計、濕式氣量計及膜式氣量計等。優(yōu)點(diǎn)：（1）計量精度高；（2）安裝管道條件對計量精度沒有影響；（3）可用于高粘度液體的測量；（4）范圍度寬；（5）直讀式儀表無需外部能源可直接獲得累計總量，清晰明了，操作簡便。渦街流量計可以測量液體、氣體或蒸汽的流量。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="均速管流量計,流量計" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039219306275/8910294.png"></div><p style="text-indent:25px">流量計在工程上常用單位m3/h，它可分為瞬時流量（Flow Rate）和累計流量（Total Flow），瞬時流量即單位時間內(nèi)過封閉管道或明渠有效截面的量，流過的物質(zhì)可以是氣體、液體、固體；累計流量即為在某一段時間間隔內(nèi)（兩天、一周、一月、一年）流體流過封閉管道或明渠有效截面的累計量。通過瞬時流量對時間積分亦可求得累計流量，所以瞬時流量計和累計流量計之間也可以相互轉(zhuǎn)化。流量計要盡量避開鐵磁性物體及具有強(qiáng)電磁場的設(shè)備(如大電機(jī)、大變壓器的等)，以免磁場影響傳感器的工作磁場和流量信號。傳感器勺轉(zhuǎn)換器間的流量信號線和激磁線。然而從雷電故障中損壞零部件的分析，引起故障的感應(yīng)高電壓和浪涌電流大部分足從控制室電源線路引入的，其他兩條途徑較少。由于電磁流量計測量含有懸浮固相或污臟體的機(jī)會遠(yuǎn)比其他流量儀表多，出現(xiàn)內(nèi)壁附著層產(chǎn)生的故障概率也就相對較高。若附著層電導(dǎo)率與液體電導(dǎo)率相近。常見的調(diào)試期故障通常由安裝不妥。靶式流量計是基于力學(xué)原理的一種流量計。贛州流量計供應(yīng)</p><p style="text-indent:25px">轉(zhuǎn)子流量計中心線與鉛垂線間夾角一般不超過5度。均速管流量計</p><p style="text-indent:25px">超聲波流量計的常見故障及處理情況：1、流速顯示不正常數(shù)據(jù)劇烈變化，可能是傳感器安裝在管道振動大的地方或安裝在調(diào)節(jié)閥、泵、縮流孔的下游。處理方法: 將傳感器裝在遠(yuǎn)離振動的地方或移至改變流態(tài)裝置的上游。2、讀數(shù)不正確。應(yīng)該是傳感器裝在水平管道的頂部或底部有沉淀物干擾超聲波信號。要么就是傳感器裝在水流向下的管道上管內(nèi)未充滿流體。處理方法：前者將傳感器裝在管道兩側(cè)、后者將傳感器裝在充滿流體的管段上。3、傳感器是好的,但流速低或沒有流速。可能是:A，由于管道內(nèi)的油漆、鐵銹未掃除干凈. 處理方法：重新掃除管道,安裝傳感器。B，管道面凹凸不平或安裝在焊接縫處。處理方法：將管道磨平或遠(yuǎn)離焊縫處安裝傳感器。C，管道圓度不好,內(nèi)表面不光滑,有管襯式結(jié)垢。處理方法：選擇鋼管等內(nèi)表面光滑管道材質(zhì)或襯的地方安裝傳感器。D，傳感器與管道耦合不好,耦合面有縫隙或氣泡。處理方法：重新安裝耦合劑。E，傳感器安裝在套管上,則會削弱超聲波信號。處理方法：將傳感器移到無套管的管段部位上。均速管流量計</p><p style="text-indent:25px">上海翼爾電子科技有限公司致力于儀器儀表，以科技創(chuàng)新實(shí)現(xiàn)***管理的追求。公司自創(chuàng)立以來，投身于流量，壓力，溫度，物液位，是儀器儀表的主力軍。上海翼爾電子繼續(xù)堅定不移地走高質(zhì)量發(fā)展道路，既要實(shí)現(xiàn)基本面穩(wěn)定增長，又要聚焦關(guān)鍵領(lǐng)域，實(shí)現(xiàn)轉(zhuǎn)型再突破。上海翼爾電子始終關(guān)注儀器儀表行業(yè)。滿足市場需求，提高產(chǎn)品價值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2772043.html</p></div></div></div></div></div><div id="som338i" class="page-right twoColRt"><div id="zvw86jn" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="qigh8xv" class="recomPic 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