核级球阀流通性能的仿真分析和研究

Analysis and Research on Flow Performance of Unclear Ball Valve

为研究球阀在不同开度下对流量特性的影响,该文针对某项目球阀,设置不同阀门开度,在CFDesgin中进行数值模拟。分析不同阀芯开度下的阀门内部流场以及阀门的流量系数CV。然后探究建模中细节处理以及球体通孔直径大小对计算结果的影响。发现(1)随着阀门开度的增大,阀门流通性能逐步提高;(2)由于球阀流道十分简单,不建议对模型进行简化;(3)阀门的流量系数CV随球体通孔直径增大先变大再变小。

For the study of the influence of flow characteristic under different opening of ball valve,for ball valve of one project,different valve opening is set in the CFDesgin software to carry on the numerical simulation.Valve interior flow field under different opening of the valve core is analyzed.It is found:(1) with the increase of valve opening,the flow performance of the valve is gradually improving;(2) Because of the simple ball valve flow,it is not recommended to simplify the model;(3) Flow coefficient CVof the ball valve changes with ball hole diameter,bigger and smaller.