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蒸汽流量計(jì) http://www.yb1518.com

 
 
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發(fā)貨 江蘇淮安市付款后3天內(nèi)
品牌 江蘇恒大
型號 HD-LU
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更新 2016-03-22 10:09
 

江蘇大恒儀表有限公司

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http://www.jshdyb18.com/hdyb-Products-5536089/
現(xiàn)場顯示蒸汽流量計(jì)具有以下特點(diǎn):
     測量精度高,量程寬;
     測量介質(zhì)廣泛,可測量液體、氣體和蒸汽;
     工作溫度高,介質(zhì)溫度可達(dá)350℃;
     無運(yùn)動部件,無磨損,可靠性高;
     表體采用不銹鋼材料,耐腐蝕。
2. 測量原理
當(dāng)管道中流體介質(zhì)通過旋渦發(fā)生體(三角柱)時(shí),由于局部流速加速而產(chǎn)生旋渦現(xiàn)象(如圖一),此旋渦分成兩列交替地出現(xiàn),這種旋渦列被稱為卡門渦街。
卡門渦街的釋放頻率與三角柱寬度尺寸和流體的流動速度有關(guān),而與介質(zhì)的溫度、壓力等特性參數(shù)無關(guān)。可用下式表示:
f=StV/d  ……………………(1)
式中:      f—卡門渦街的釋放頻率
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