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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="xpx9fbp" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jszhck/637436289042998618/4460086.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="thfvj9z" 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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>山東液體渦輪流量計(jì)供貨廠,流量計(jì)</p><p><span>***更新：</span>2021-01-13 09:13:01</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="tzrzh5x" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">江蘇中徽測(cè)控儀表有限公司</a></p><p><span>聯(lián)系人：</span>姜經(jīng)理</p><p><span>郵箱: </span>jszhck@163.com</p><p><span>電話: </span>13770424300</p><p><span>傳真: </span>0517_86903470</p><p><span>網(wǎng)址: </span>http://www.jszhckyb.com</p><p><span>手機(jī): </span>0517-86900078</p><p><span>地址: </span>江蘇省淮安市金湖縣工業(yè)集中區(qū)A區(qū)3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="bh9rzpt" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="xlbjjhn" class="box"><p><p> <p> <p> 渦街流量計(jì)工作狀態(tài)下的體積流量不受被測(cè)流體溫度、壓力、密度等熱工參數(shù)的影響，但液體或蒸汽的終測(cè)量結(jié)果應(yīng)是質(zhì)量流量，對(duì)于氣體，山東液體渦輪流量計(jì)供貨廠，終測(cè)量結(jié)果應(yīng)是標(biāo)準(zhǔn)體積流量。質(zhì)量流量或標(biāo)準(zhǔn)體積流量都必須通過(guò)流體密度進(jìn)行換算，必須考慮流體工況變化引起的流體密度變化，山東液體渦輪流量計(jì)供貨廠。 </p> <p> 造成流量測(cè)量誤差的因素主要有：管道流速不均造成的測(cè)量誤差；不能準(zhǔn)確確定流體工況變化時(shí)的介質(zhì)密度；將濕飽和蒸汽假設(shè)成干飽和蒸汽進(jìn)行測(cè)量，山東液體渦輪流量計(jì)供貨廠。這些誤差如果不加以限制或消除，渦街流量計(jì) 的總測(cè)量誤差會(huì)很大。 </p> </p> </p> <p> <br /> 流量計(jì)可以水平和垂直安裝，但是應(yīng)該確保避免沉積物和氣泡對(duì)測(cè)量電極的影響，電極軸向保持水平為好。山東液體渦輪流量計(jì)供貨廠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東液體渦輪流量計(jì)供貨廠,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289042998618/4460086.png"></div><p style="text-indent:25px">差壓式流量計(jì)應(yīng)用范圍特別,在封閉管道的流量測(cè)量中各種對(duì)象都有應(yīng)用,如流體方面:單相、混相、潔凈、臟污、粘性流等;工作狀態(tài)方面:常壓、高壓、真空、常溫、高溫、低溫等;管徑方面:從幾mm到幾m;流動(dòng)條件方面:亞音速、音速、脈動(dòng)流等。它在各工業(yè)部門的用量約占流量計(jì)全部用量的1/4~1/3?？装逡詢?nèi)孔銳角線來(lái)保證精度，因此對(duì)腐蝕、磨損、結(jié)垢、臟污敏感，長(zhǎng)期使用精度難以保證，需每年拆下強(qiáng)檢一次。采用法蘭連接，易產(chǎn)生跑、冒、滴、漏問(wèn)題，增加了維護(hù)工作量。工業(yè)發(fā)達(dá)國(guó)家近年P(guān)D流量計(jì)(不包括家用煤氣表和家用水表)的銷售金額占流量?jī)x表的13%~23%;我國(guó)約占20%,1990年產(chǎn)量(不包括家用煤氣表)估計(jì)為34萬(wàn)臺(tái),其中橢圓齒輪式和腰輪式分別約占70%和20%。天津長(zhǎng)頸噴嘴流量計(jì)智能電磁流量計(jì)在使用時(shí)我們要求被測(cè)介質(zhì)必須是地電位，一般都是通過(guò)管道或法蘭接地；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東液體渦輪流量計(jì)供貨廠,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289098819741/4521959.png"></div><p style="text-indent:25px">水平管道基本安裝方式對(duì)于水平管道，測(cè)量氣體時(shí)推薦安裝在管道上方160度范圍內(nèi)，尤其對(duì)于有大量水粉的氣體時(shí)，我們只推薦這樣安裝;測(cè)量液體時(shí)推薦安裝在管道下方160度范圍內(nèi)，尤其對(duì)于含有大量氣體的液體時(shí)，我們只推薦這樣安裝;但有一點(diǎn)要注意，對(duì)于那些極易氣化的液體，如液態(tài)的烯烴類介質(zhì)，安裝時(shí)插入方向同氣體，在管道上方。測(cè)量蒸汽時(shí)只推薦傳感器安裝在管道下方160度內(nèi)，并且要使傳感器處于整個(gè)測(cè)量裝置的比較高點(diǎn)。垂直管道基本安裝方式對(duì)于垂直管道，理論上可以在360度內(nèi)安裝。對(duì)于含有大量水分的濕氣體，推薦傳感器安裝時(shí)向上傾斜5度，對(duì)于含有大量氣體的液體，推薦傳感器安裝時(shí)向下傾斜5度，如右圖所示。對(duì)于蒸汽，推薦傳感器安裝時(shí)下傾斜5度，如右圖，且傳感器應(yīng)該處于整個(gè)測(cè)量系統(tǒng)中的比較高點(diǎn)。威力巴安裝所需直管段小直管段要求—彎管后2D安裝如圖所示。當(dāng)管道上、下游的直管段不夠長(zhǎng)時(shí)，我們推薦在彎管后2倍管道內(nèi)徑處安裝威力巴，因在彎管后的流體剖面較復(fù)雜，需將流體系數(shù)K做適當(dāng)?shù)恼{(diào)整。調(diào)整K系數(shù)后，測(cè)量精度為±3%。</p><p style="text-indent:25px">電磁流量計(jì)應(yīng)用一直都非常，由于是為供水企業(yè)水計(jì)量商業(yè)專門設(shè)計(jì)的，具有防水、防腐、防干擾、防雷擊的能力。那么在電磁流量計(jì)使用中也肯定有一些題目，我們就收集來(lái)分析一下。一、傳感器接地的題目電磁流量計(jì)傳感器電極檢測(cè)的流量信號(hào)是毫伏級(jí)，且以傳感器內(nèi)流體的電位為基準(zhǔn)的，所以外來(lái)干擾對(duì)它的影響很大，因而，良好的接地很大程度上決定著流量計(jì)的丈量正確度。被測(cè)的流體本身作為電導(dǎo)體，必需排除其他不相關(guān)的電磁干擾。電極檢測(cè)出的電勢(shì)信號(hào)，不受外界寄生電勢(shì)的干擾。對(duì)傳感器應(yīng)有良好的單獨(dú)接地線，接地電阻小于10Ω。在連接傳感器的管道內(nèi)若涂有絕緣層或長(zhǎng)短金屬管道時(shí)，傳感器兩側(cè)應(yīng)裝有接地環(huán)?？装辶髁坑?jì)標(biāo)準(zhǔn)型節(jié)流裝置無(wú)須實(shí)流校準(zhǔn)，即可投用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東液體渦輪流量計(jì)供貨廠,流量計(jì)" src="https://tyunfile.71360.com/UploadFile/jszhck/637436289052754481/5890853.png"></div><p style="text-indent:25px"> 質(zhì)量流量計(jì)安裝要求1、安裝位置的選擇應(yīng)避免電磁干擾。傳感器、變送器的安裝位置以及電纜鋪設(shè)應(yīng)盡量遠(yuǎn)離易產(chǎn)生強(qiáng)電磁場(chǎng)的設(shè)備，如大功率馬達(dá)、變壓器設(shè)施、變頻設(shè)備等。2、質(zhì)量流量傳感器安裝應(yīng)使傳感器流向標(biāo)識(shí)與流體流向一致。并使箭頭指向與變送器內(nèi)部組態(tài)的流量方向一致。(注：質(zhì)量流量計(jì)可以雙向使用。如果安裝方向與實(shí)際流向相反，修改變送器內(nèi)的流向組態(tài)即可。)3、質(zhì)量流量計(jì)是根據(jù)測(cè)量管振動(dòng)原理測(cè)量的流量?jī)x表，因此傳感器安裝時(shí)應(yīng)考慮在兩側(cè)的工藝管道近法蘭處(約2～10倍管徑處)做堅(jiān)固的支撐，避免儀表及相關(guān)管路產(chǎn)生震動(dòng)。若強(qiáng)烈的管道振動(dòng)不可避免時(shí)，建議用柔性管將管道系統(tǒng)與儀表傳感器隔離。4、因質(zhì)量流量計(jì)是依據(jù)科氏力原理工作的，為避免重力對(duì)計(jì)量精度的影響。質(zhì)量流量計(jì)的測(cè)量管無(wú)論是向上還是向下安裝，都要盡量使測(cè)量管與地平面保持垂直或水平。5、安裝時(shí)連接法蘭面應(yīng)相互平行，應(yīng)使兩個(gè)法蘭的中心位于同一軸線避免產(chǎn)生附加應(yīng)力。嚴(yán)禁用傳感器硬行拉直上、下游工藝管道，否則將影響測(cè)量甚至損壞傳感器。6、在傳感器的上、下游管道上，建議安裝截止閥及旁路以方便調(diào)零、日常維護(hù)及確保傳感器在不工作時(shí)亦可處于滿管狀態(tài)。電磁流量計(jì)的安裝與調(diào)試比其它流量計(jì)復(fù)雜，且要求更嚴(yán)格。天津長(zhǎng)頸噴嘴流量計(jì)</p><p style="text-indent:25px">孔板流量計(jì)應(yīng)用范圍廣，全部單相流皆可測(cè)量，部分混相流亦可應(yīng)用。山東液體渦輪流量計(jì)供貨廠</p><p style="text-indent:25px">孔板流量計(jì)屬于差壓式流量計(jì)的一種。它具有結(jié)構(gòu)簡(jiǎn)單，維修方便，性能穩(wěn)定等特點(diǎn)。現(xiàn)如今孔板流量計(jì)被適用于煤炭、化工、交通、建筑、輕紡、食品、醫(yī)藥、農(nóng)業(yè)、環(huán)境保護(hù)等各個(gè)領(lǐng)域。一、工作原理充滿管道的流體流經(jīng)管道內(nèi)的節(jié)流裝置，在節(jié)流件附近造成局部收縮，流速增加，在其上、下游兩側(cè)產(chǎn)生靜壓力差。在已知有關(guān)參數(shù)的條件下，根據(jù)流動(dòng)連續(xù)性原理和伯努利方程可以推導(dǎo)出差壓與流量之間的關(guān)系而求得流量。其基本公式如下：c－流出系數(shù)無(wú)量綱d－工作條件下節(jié)流件的節(jié)流孔或喉部直徑D－工作條件下上游管道內(nèi)徑qm－質(zhì)量流量Kg/sqv－體積流量m3/s?－直徑比d/D無(wú)量綱流體的密度Kg/m3可膨脹性系數(shù)無(wú)量綱山東液體渦輪流量計(jì)供貨廠</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2829073.html</p></div></div></div></div></div><div id="bv9bjrj" class="page-right twoColRt"><div id="tj1bh9n" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="9zhxftr" class="recomPic likePro"><a href="http://www.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) 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