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#f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>速度式流量計(jì)批發(fā),流量計(jì)</p><p><span>***更新：</span>2021-01-21 06:15:16</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="ihe4yv3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海翼爾電子科技有限公司</a></p><p><span>聯(lián)系人：</span>趙“S</p><p><span>郵箱: </span>yeertec@163.com</p><p><span>電話: </span>13361991561</p><p><span>傳真: </span>021_57155131</p><p><span>網(wǎng)址: </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="rg2w7ij" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="37n3wdf" class="box"><p><p style="text-indent:25px">容積式流量計(jì)，又稱定排量流量計(jì)，簡稱PD流量計(jì)，在流量儀表中是精度較高的一類，速度式流量計(jì)批發(fā)。它利用機(jī)械測量元件把流體連續(xù)不斷地分割成單個(gè)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(jì)按其測量元件分類，可分為橢圓齒輪流量計(jì)、刮板流量計(jì)、雙轉(zhuǎn)子流量計(jì)、旋轉(zhuǎn)活塞流量計(jì)、往復(fù)活塞流量計(jì)、圓盤流量計(jì)、液封轉(zhuǎn)筒式流量計(jì)、濕式氣量計(jì)及膜式氣量計(jì)等，速度式流量計(jì)批發(fā)。優(yōu)點(diǎn)：（1）計(jì)量精度高；（2）安裝管道條件對計(jì)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(jì)總量，清晰明了，操作簡便。容積式流量計(jì)，速度式流量計(jì)批發(fā)，又稱定排量流量計(jì)，簡稱PD流量計(jì)。速度式流量計(jì)批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="速度式流量計(jì)批發(fā),流量計(jì)" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039146679254/6793989.png"></div><p style="text-indent:25px">流量計(jì)提高計(jì)量準(zhǔn)確度途徑：（1）管道要求：國家標(biāo)準(zhǔn)對計(jì)量管長度、直管、圓度和內(nèi)表面粗糙度等都有嚴(yán)格的技術(shù)要求。當(dāng)計(jì)量管較小長度不能滿足標(biāo)準(zhǔn)要求時(shí)，會(huì)給流量測量結(jié)果帶來偏差，其大小與孔徑比β和雷諾數(shù)有關(guān)，所以必須在孔板前面的直管上安裝整流器，才能保證計(jì)量準(zhǔn)確度。（2）安裝要求：孔板入口端面必須與管道軸線垂直，其偏差不能超過1度。安裝孔板時(shí)要注意裝入管道的方向，嚴(yán)禁反裝，必須符合標(biāo)準(zhǔn)對不同軸度公差的要求。法蘭、孔板與取壓裝置之間的密封墊片厚度不得大于0.03D。墊片的安裝不得突入直管段內(nèi)或取壓裝置內(nèi)腔，不得擋住取壓口及引起取壓位置的改變。新建站場必須在管道吹掃并運(yùn)行幾天后，再將孔板安裝到節(jié)流裝置上，以免孔板被氣體中的液、固體雜質(zhì)損傷或污染。速度式流量計(jì)批發(fā)電磁流量計(jì)是具有雙向測量系統(tǒng)的。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="速度式流量計(jì)批發(fā),流量計(jì)" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039069628540/5795593.png"></div><p style="text-indent:25px">流量計(jì)在在實(shí)際使用過程中，檢查的周期較長，而且檢查的不夠全方面，一般對外交接流量計(jì)為半年標(biāo)定一次，對內(nèi)標(biāo)定的時(shí)間更長，這樣常常導(dǎo)致流量計(jì)管理脫節(jié)。因此應(yīng)該設(shè)立專門的技術(shù)人員定期對各站流量計(jì)特別是對外交接的重要關(guān)口進(jìn)行檢查。解決辦法：（1）在使用過程中，要對現(xiàn)場的環(huán)境進(jìn)行改善，盡量使流量計(jì)運(yùn)行時(shí)的工況與標(biāo)定時(shí)的工況基本相一致。標(biāo)定溫度與實(shí)際運(yùn)行溫度差控制在正負(fù)五攝氏度以內(nèi)，超過這個(gè)范圍的話要進(jìn)行溫度修正；流量計(jì)工作壓力高于標(biāo)定壓力1.0MPa時(shí)，應(yīng)進(jìn)行壓力修正。（2）定期對流量計(jì)進(jìn)行專業(yè)的維護(hù)和保養(yǎng)，確保流量計(jì)在較好的性能下工作，延長其使用壽命。（3）在流量計(jì)使用過程中，建立健全流量計(jì)相關(guān)資料，做好運(yùn)行及保養(yǎng)記錄。（4）加強(qiáng)關(guān)于流量計(jì)基礎(chǔ)知識(shí)的培訓(xùn)，對流量計(jì)結(jié)構(gòu)、原理和使用方法進(jìn)行普遍的培訓(xùn)學(xué)習(xí)，以確保使用人員能夠熟練運(yùn)用流量計(jì)，保證原油貿(mào)易的交接公平公正。</p><p style="text-indent:25px">孔板流量計(jì)在天然氣計(jì)量中的誤差原因分析：1 節(jié)流裝置，1.1孔板制造及安裝，采用孔板流量計(jì)時(shí)，對孔板加工的技術(shù)要求十分嚴(yán)格，必須符合國家標(biāo)準(zhǔn)或部頒標(biāo)準(zhǔn)中的規(guī)定，否則，會(huì)給天然氣流量測量結(jié)果帶來誤差。（1）孔板偏心：實(shí)驗(yàn)表明，孔板偏心引起的計(jì)量誤差一般在2%以內(nèi)，孔徑比β值愈高，偏心率影響愈大，所以，應(yīng)避免采用β值高的孔板。（2）孔板彎曲：由于安裝或維修不當(dāng)，使孔板發(fā)生彎曲或變形，導(dǎo)致流量測量誤差較大。在法蘭取壓的孔板上進(jìn)行測試結(jié)果，孔板彎曲產(chǎn)生的大的誤差約為3.5%。（3）節(jié)流裝置內(nèi)突出物：節(jié)流裝置中伸入管內(nèi)的墊片、焊縫等也會(huì)使流量測量產(chǎn)生一定的誤差，誤差大小與突出物的位置、孔板與突出物的距離以及突出高度有關(guān)。試驗(yàn)證明，當(dāng)β=0.7，突出物**于孔板上游2倍管徑處時(shí)，產(chǎn)生的誤差大的；若突出物位于上游孔板處，誤差為16%～50%，若將突出物位于孔板下游時(shí)，對計(jì)量準(zhǔn)確度的影響要小些。流量計(jì)在工程上常用單位m3/h。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="速度式流量計(jì)批發(fā),流量計(jì)" src="https://tyunfile.71360.com/UploadFile/yierdianzi/637407039091991792/5193322.png"></div><p style="text-indent:25px">流量計(jì)在工程上常用單位m3/h，它可分為瞬時(shí)流量（Flow Rate）和累計(jì)流量（Total Flow），瞬時(shí)流量即單位時(shí)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(jì)流量即為在某一段時(shí)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(jì)量。通過瞬時(shí)流量對時(shí)間積分亦可求得累計(jì)流量，所以瞬時(shí)流量計(jì)和累計(jì)流量計(jì)之間也可以相互轉(zhuǎn)化。流量計(jì)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(jì)測量含有懸浮固相或污臟體的機(jī)會(huì)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。流量計(jì)會(huì)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。速度式流量計(jì)批發(fā)</p><p style="text-indent:25px">轉(zhuǎn)子流量計(jì)流量值應(yīng)作必要的換算。速度式流量計(jì)批發(fā)</p><p style="text-indent:25px">渦輪流量計(jì)正確安裝完畢之后，先不要忙著使用。先要查看一下安裝盒接線是否有問題，如果發(fā)現(xiàn)了問題應(yīng)該及時(shí)的進(jìn)行處理，這樣才能保證日后的正常使用。由于一些人員的操作經(jīng)驗(yàn)不足，所以一定要認(rèn)認(rèn)真真的研究一下渦輪流量計(jì)說明書。對于初次運(yùn)行中所遇到的問題，要善于分析思索。整套電磁流量計(jì)是已在制造廠流量校準(zhǔn)裝置上調(diào)整校準(zhǔn)好的，只要核對傳感器和轉(zhuǎn)換器配套號、儀表系數(shù)是否正確等，一般渦輪流量計(jì)不經(jīng)任何調(diào)整就可以投入運(yùn)行。把原來調(diào)整好的整套儀表搞亂。速度式流量計(jì)批發(fā)</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2942210.html</p></div></div></div></div></div><div id="hdvkw2s" class="page-right twoColRt"><div id="ej7eo7b" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="mmueldp" class="recomPic likePro"><a href="http://m.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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