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为探究输气站场轴流式调压阀在气-固两相流中的冲蚀特性,以典型轴流式调压阀为研究对象,采用壁厚测量实验和CFD数值模拟的方法,分析了阀体在不同开度下高流速的分布特点及其对关键部分冲蚀速率的贡献,并基于Tulsa模型建立了调压阀冲速率计算模型。结果表明:入口变径管和阀芯笼套处流速高于阀体内流速,属于磨损严重区域;在运行的5年中,开度30%时对冲蚀速率的贡献为1.7%,开度70%时为42.1%,开度100%时为56.1%;随着开度的增加阀内各处冲蚀速率呈增大趋势;建立的调压阀冲速率计算模型,修正了原模型中冲击角度函数f(a),发现当f(a)中X为0.54,Y为-0.91,Z为0.79,M为0.1,N为0.64时,该模型预测精度较高且具有较好的适应性。
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