弯管流量计试验研究

Experimentation and Study on Pipe Flowmeter

弯管流量计是一种有潜力的流量计量仪器。采用试验的方法研究了弯管流量计的流量Q与压差√△h的关系，以及流量系数随弯径比和弯管直径的变化规律，研究表明流量Q与压差√△h成线性关系；在弯径比一定的情况下，流量系数随管径而变，并非常数。所以，在应用弯管流量计时，不仅要考虑弯径比的影响，而且要考虑管径的影响。

Pipe flowmeter is a very potential flow metering equipment. Using the test method, this paper investigates the relation of Q and √△h educing the relations between the two which are linear.Besides, this paper studies the rules of flow coefficient changing with curved pipe diameter ratio and diameter and gets the flow formula.Tests show that in certain curved track circumstances the flow coefficient varies with diameter not a constant.Therefore, to apply pipe flowmeter, we must not only consider the impact bending diameter ratio, but also to consider the impact diameter.