内外管压差流量计的压力损失  

Pressure Loss Study on a New Inside and Outside Tube Differential Pressure Flowmeter

作　　者：范玉浪 孟江[1] 赵赟[1] 李学忠[1] 

机构地区：[1]中北大学机械与动力工程学院,太原030051

出　　处：《机械设计与研究》2014年第1期98-100,共3页Machine Design And Research

摘　　要：针对现有流量计的节流方式存在压损大、扰动大以及差压信号稳定性不足等问题,设计了一个新型内外管差压流量计。在介质为水的情况下,对不同管径的六种模型进行Fluent仿真对比,结果表明异径管管径为10/20这一模型为最优模型。此外,在相同条件下,将该最优模型与等径比β为0.6的V锥流量计进行压损对比,得出该内外管压差流量计耗能仅为常规V锥流量计的不到10%的结论。Aiming at the defects that the throtting ways of existing flowmeters have large pressure loss and disturbances of the fluid and the stability of differential pressure signal is insufficient, a new inside and outside tube differential pressure flowmeter is designed. Under the condition of water as the medium six different tube-diameter models are compared by Fluent simulation. The results show that reducing tube-diameter 10/20 is the best model. In addition, under the same conditions, pressure loss In the condition of the same effective flow area, pressure loss of that best model is compared with V-cone flowmeter which equivalent diameter ratio is 0.6. The conclusion is obtained that the energy consumption of this new inside and outside tube differential pressure flowmeter is less only 10% of the conventional V-cone flowmeter.

关 键 词：内外管差压式流量计 压力损失 相对压损 V锥流量计 

分 类 号：TH814[机械工程—仪器科学与技术]