论文部分内容阅读
多相流过程参数的准确测量在石油化工与冶金工业等工业过程中十分重要。内锥式流量计作为一种新型差压流量计在多相流测量中逐渐受到关注,它能在较短的直管段条件下对流体实现准确的测量,但其结构尚存在优化的空间,需进行深入研究。本文对传统内锥式流量计做结构变形和优化研究,利用计算流体力学(CFD)方法对DN50 mm水平管道中内锥变形体的流场进行数值模拟,分析在不同结构参数下锥体的水力特性以优化结构。数值仿真结果表明,综合内锥式流量计在取压点、永久压损及测量精确度等因素,优化后的结构可以显著降低永久压损,提高测量重复性和精确度。
The accurate measurement of multiphase flow process parameters is very important in industrial processes such as petrochemical and metallurgical industries. As a new type of differential pressure flowmeter, the inner cone flowmeter has drawn more and more attention in multiphase flow measurement. It can accurately measure the fluid under the condition of short straight pipe section, but its structure still exists in the optimized space Conduct in-depth study. In this paper, the structural deformation and optimization of the traditional cone flowmeter were studied. The CFD method was used to numerically simulate the flow field of the cone in the DN50 mm horizontal pipe. The hydraulic forces of the cone under different structural parameters were analyzed. Features to optimize the structure. The numerical simulation results show that the optimized inner cone flowmeter can significantly reduce the permanent pressure loss and improve the repeatability and accuracy of the measurement when factors such as pressure point, permanent pressure loss and measurement accuracy are taken into consideration.