V锥流量计在蒸汽测量中可膨胀系数的实验研究  

Experimental Research of Expansion Factor for V-cone Flowmeters

作　　者：毕英 许文达[1,2] 张涛[2] 刘伟光[2] 李宝 

机构地区：[1]国家蒸汽流量计量站,山东烟台264003 [2]天津大学电气与自动化工程学院,天津300072

出　　处：《化工自动化及仪表》2014年第2期124-127,共4页Control and Instruments in Chemical Industry

摘　　要：利用蒸汽实流检测装置分别在不同工况条件下,开展了L悬臂梁V锥流量计的可膨胀系数ε实验测试,实验样机为DN50mm和DN100mm两种口径,其等效直径比β有0.55、0.65、0.75这3种规格,建立V锥流量计在蒸汽介质条件下的可膨胀系数拟合方案,利用实验数据拟合得到了V锥流量计在蒸汽介质条件的可膨胀系数经验拟合公式。实验结果表明:蒸汽介质条件下的拟合公式与空气介质条件的经验拟合公式存在偏差,最大可能会引起5%的计量偏差。In different conditions, the real steam flow detector was employed to test expansion factor 6 of the V-cone flowmeter with L-cantilever. The DN5Omm/DNlOOmm-sized experimental prototypes have an equivalent diameter ratioβ of 0.55,0.65 and 0.75 respectively. Through establishing V-cone flowmeter＇ s expansion factor fitting program, the experience fitting formula for the flowmeter under steam condition was obtained, The experimental results show that the deviation between the fitting formula under steam condition and the empirical fitting formula under gas condition exists,and it can induce a 5% measurement error at most.

关 键 词：蒸汽流量 计量 V锥流量计 可膨胀系数 

分 类 号：TH701[机械工程—仪器科学与技术]