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泄压阀作为管道系统的重要安全部件,其作用在于保障管道系统超压安全,减少爆炸性事件的发生。基于雷诺时均方程和标准k-ε紊流模型,运用Fluent动网格和UDF技术对某水击泄压阀管道模型进行数值模拟,通过UDF程序控制阀门开启速度,得到阀口附近流场参数的数值变化。研究表明:水击泄压阀阀芯部分会有明显的节流效应,导致阀内速度的突变;随着管道内压力的增加,管道内部速度总体呈现增大趋势,噪声和速度具有一定的相关性,阀门内部声功率级分布基本呈现对称分布。
Pressure relief valve as an important safety components of the pipeline system, its role is to ensure the overpressure safety of the pipeline system to reduce the incidence of explosions. Based on the Reynolds averaged equations and the standard k-ε turbulence model, the Fluent dynamic grid and the UDF technology were used to simulate the pipe model of a water hammer pressure relief valve. The valve opening speed was controlled by the UDF program to obtain the flow field parameters The numerical changes. The results show that there is a significant throttling effect on the spool part of the water hammer relief valve, which leads to the sudden change of the velocity in the valve. With the increase of the pressure in the pipeline, the internal velocity of the pipeline shows a general trend of increase, and the noise and velocity have a certain correlation Sexual, internal sound power level distribution of the valve basically showed a symmetrical distribution.