新型压力调节阀内部流场的数值模拟

摘要

目前装配式输油管线与成品油管道对接时，需要使用压力调节阀进行节流、减压来保证装配式管线的安全。为了确定一种新型压力调节阀能否安全可靠地工作，本文采用了数值模拟分析的方法对其进行研究。利用计算流体力学软件对压力调节阀内部流场进行仿真，通过模拟不同开度下的流场情况得到速度、压力分布的可视化图像，并分析得出调节阀的理论流量特性曲线。在此基础上对该调节阀在实验台进行了试验，得到的试验结果与模拟结果误差为11.5%，进一步验证了模拟结果的准确可靠性，得到了该调节阀的流场速度、压力云图及近似快开型的流量特性。研究结果表明：该新型压力调节阀具有比较好的节流、减压能力，能够安全可靠地应用于两种管线对接的工作状况中。%When an assembly oil pipeline is interconnected with a product oil pipelines,pressure regulating valve should be used to protect assembly pipelines by throttling and reducing pressure. In order to determine the security and reliability of a new type pressure regulating valve,numerical simulation was conducted to study the interior flow field in the pressure regulating valve. Based on computational fluid dynamics,visualization of the velocity and pressure distributions was obtained by simulating inner flow field under different openings,and the theoretical flow characteristic curve was determined. The valve was tested in the laboratory bench. The error between experimental result and simulation result was 11.5%,proving the rationality of the simulation results. The velocity and pressure contoursand the quick-opening type flow characteristic curve of the valve were presented. The new type pressure regulating valve had good abilities of throttling and reducing pressure,and could be safely and reliably used in pipelines docking.