粉嫩被粗大进进出出视频_路博LB-6200型便攜式超聲波明渠流量計之堰槽材質(zhì)選擇-青島明成環(huán)?？萍加邢薰?/title> <meta http-equiv="keywords" content="路博LB-6200型便攜式超聲波明渠流量計之堰槽材質(zhì)選擇"> <meta http-equiv="description" content="路博LB-6200型便攜式超聲波明渠流量計之堰槽材質(zhì)選擇 LB-6200型便攜式明渠流量計之堰槽材質(zhì)選擇 LB-6200型明渠流量計的常用堰槽材質(zhì)有鋼質(zhì)堰槽和PVC堰槽兩種。鋼質(zhì)堰槽槽體采用不銹鋼制作，有好的耐腐蝕能力；PVC堰槽具有抗腐蝕能力，但..."> <SCRIPT language=javascript type=text/javascript>  </SCRIPT> <noscript><iframe src=""></iframe></noscript> <style> body { -moz-user-select: none; } </style> <script> if(true){ var curl = window.location.href; var defurl = "http://www.600806.com.cn"; if(curl.indexOf(defurl)<0){ if (defurl.indexOf("http://")==0){ curl = curl.replace(defurl.replace("http:","https:"),defurl); }else{ curl = curl.replace(defurl.replace("https:","http:"),defurl); } window.location.href = curl; } } </script> <link rel="stylesheet" type="text/css" href="/web/mb/cn/gd_mb80/css/base.css"> <link rel="stylesheet" type="text/css" href="/web/mb/cn/gd_mb80/css/top.css"> <link 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><a>路博LB-6200型便攜式超聲波明渠流量計之堰槽材質(zhì)選擇</a> </div> </div> </div> <div id="fvkfg1sxx" class="news_mdef_m"> <h1 class="dhr_mt1">路博LB-6200型便攜式超聲波明渠流量計之堰槽材質(zhì)選擇</h1> <span id="fvkfg1sxx" class="dhr_mt2">發(fā)表時(shí)間：2022-03-21</span> <div id="fvkfg1sxx" class="dhr_mt3"> <p style="color:#333333;font-family:"font-size:16px;background-color:#FFFFFF;"> <strong>路博LB-6200型便攜式超聲波明渠流量計之堰槽材質(zhì)選擇</strong><strong></strong> </p> <p style="color:#333333;font-family:"font-size:16px;background-color:#FFFFFF;"> <strong>LB-6200型便攜式明渠流量計之堰槽材質(zhì)選擇</strong> </p> <strong> <p> <img src="https://cos3.solepic.com/20220108/b_4170889202201081042273950.png" /> </p> <p> LB-6200型明渠流量計的常用堰槽材質(zhì)有鋼質(zhì)堰槽和PVC堰槽兩種。鋼質(zhì)堰槽槽體采用不銹鋼制作，有好的耐腐蝕能力；PVC堰槽具有抗腐蝕能力，但應防止陽(yáng)光曝曬，防止老化，也不宜用于高溫介質(zhì)。 </p> </strong> <p style="color:#333333;font-family:"font-size:16px;background-color:#FFFFFF;"> <strong> 鋼質(zhì)堰槽可以同圓管進(jìn)行焊接連接，無(wú)需進(jìn)行土建工程，適用于自流情況下的管道，而PVC堰槽需要輔以土建導流槽。、</strong> </p> <p style="color:#333333;font-family:"font-size:16px;background-color:#FFFFFF;"> <strong><img src="https://cos3.solepic.com/20220108/b_4170889202201081112443084.png" /><img src="https://cos3.solepic.com/20220108/b_4170889202201081048579044.png" /><img src="https://cos3.solepic.com/20220108/b_4170889202201081042356286.png" /><img src="https://cos3.solepic.com/20220108/b_4170889202201081042348229.png" /></strong> </p> <strong> <p> 選型步驟 </p> <p> 1、確定流量范圍： </p> <p> 可以用公式（日水排放量/日排放時(shí)間）算出每小時(shí)的排放水量。 </p> <p> 2、確定選用測量方式： </p> <p> 流量小于50m3/h時(shí)應選用堰式，大于該流量可根據用戶(hù)現場(chǎng)情況進(jìn)行選用。一般現場(chǎng)安裝位置預留較大的，水流坡度平緩的，可以選用巴歇爾槽式，如位置較小，下游暢通的，可以選用矩形堰式。一般現場(chǎng)情況為下水道排放的，不易采用巴歇爾槽式，在下水道口安裝矩形堰式是較佳的選擇。 </p> <p> 儀器設計研發(fā)背景 </p> <p> 為貫徹《環(huán)境保護法》和《水污染防治法》，保護生態(tài)環(huán)境，保障人體健康，生態(tài)環(huán)境部于2019年12月24日，發(fā)布了《水污染源在線(xiàn)監測系統（CODCr、NH3-N 等）安裝技術(shù)規范》和《水污染源在線(xiàn)監測系統（CODCr、NH3-N 等）驗收技術(shù)規范》。在《安裝技術(shù)規范》中，提出了在線(xiàn)監測系統的組成中，需要有流量監測單元，對于需測定流量的排污單位，要建設明渠標準化計量堰（槽），并且堰槽的建設應能夠進(jìn)行明渠流量計比對工作，*三角堰、矩形堰及巴歇爾槽。在《驗收技術(shù)規范》中，對水污染源流量監測單元的驗收方法提出了具體的要求，分為液位誤差比對和流量誤差比對，具體如下： </p> <p> (1)液位誤差比對：用便攜式明渠流量計比對裝置和超聲波明渠流量計測量同一水位觀(guān)測斷面處的液位值，進(jìn)行比對試驗，每2 min記錄一次數據對，連續記錄6次，計算每一組數據對的誤差值Hi，選取*大的Hi作為流量計的液位比對誤差。 </p> <p> (2)流量誤差比對：用便攜式明渠流量計比對裝置和超聲波明渠流量計測量同一水位觀(guān)測斷面處的瞬時(shí)流量，進(jìn)行比對試驗，待數據穩定后，開(kāi)始計時(shí)，計時(shí)10 min，分別讀取明渠流量比對裝置該時(shí)段內的累積流量F1 和超聲波明渠流量計該時(shí)段內的累積流量F2，按公式計算流量比對誤差ΔF。 </p> <p> 根據以上要求可以看出，在現場(chǎng)比對驗收時(shí)需要用到便攜式明渠流量計，驗收的過(guò)程中要連續地統計記錄液位數據及流量數據，需要在12分鐘內同步記錄在線(xiàn)明渠流量計和便攜污水流量計各6個(gè)液位數據，及在10分鐘內同步記錄在線(xiàn)明渠流量計和便攜污水流量計各2個(gè)明渠流量累計數據，而且因為污水流量監測過(guò)程是不可逆的，一旦在記錄過(guò)程中出現問(wèn)題，則需要重新進(jìn)行比對，在時(shí)間上和空間上都給現場(chǎng)的驗收工作帶來(lái)了困難。 </p> </strong> <p style="color:#333333;font-family:"font-size:16px;background-color:#FFFFFF;"> <strong> 國內雖然有各類(lèi)的便攜式流量計，但是并沒(méi)有一款能夠方便快速完成上述比對任務(wù)的便攜式明渠流量計比對裝置，我們公司利用多年環(huán)保監測儀器研發(fā)經(jīng)驗，結合《水污染源在線(xiàn)監測系統（CODCr、NH3-N 等）安裝技術(shù)規范》和《水污染源在線(xiàn)監測系統（CODCr、NH3-N 等）驗收技術(shù)規范》等標準的要求，開(kāi)發(fā)出了一款專(zhuān)門(mén)針對明渠流量計現場(chǎng)比對要求的便攜式明渠流量計。</strong> </p> <p style="color:#333333;font-family:"font-size:16px;background-color:#FFFFFF;"> <strong>LB-6200型便攜式明渠流量計是一款對現有在線(xiàn)水質(zhì)監測系統中在線(xiàn)明渠流量計進(jìn)行流量和液位比對的流量計比對裝置。</strong> </p> <p style="color:#333333;font-family:"font-size:16px;background-color:#FFFFFF;"> <strong>檢測公司或者環(huán)保監測部門(mén)在企業(yè)現場(chǎng)校準、驗收在線(xiàn)明渠流量計時(shí)，需要用到便攜式明渠流量計，根據相關(guān)要求，在線(xiàn)明渠流量計要進(jìn)行液位及流量數據的比對，需要在12分鐘內每?jì)煞昼娡接涗浺粋€(gè)在線(xiàn)明渠流量計和便攜明渠流量計的液位數據及在10分鐘內同步記錄在線(xiàn)明渠流量計和便攜式明渠流量計的累計流量數據。</strong> </p> <p style="color:#333333;font-family:"font-size:16px;background-color:#FFFFFF;"> <strong>針對這一問(wèn)題我司依據相關(guān)規定研發(fā)出便攜式明渠流量計比對裝置，用于解決這一問(wèn)題。</strong> </p> <p 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