通过简化钢管几何结构，构建了管节点焊缝任意剖面的数学模型。利用几何声学原理和计算机模拟技术，绘制了焊接接头的剖面图和超声波的传播路径，实现了焊接接头声束覆盖模型的可视化，为制定超声相控阵检测工艺、设置设备检测参数和检验检测效果提供了技术支持和直观的图像显示。通过进行验证试验,结果表明：采用声束可视化及超声相控阵技术相结合的手段,可对管节点焊缝进行有效、快速及准确的检测。

This paper constructs mathematical model of tubular joint weld of arbitrary section by simplifying the geometry structure. Geometric acoustics and computer simulation technology were used, and a cross sectional view of welded joints and the propagation path of ultrasonic waves was drawn in order to achieve a welded joint beam coverage model visualization, which can provide technical support and intuitive graphic display for the development of ultrasonic phased array testing process and setting detection parameters for better inspection effect. Study shows that it is beneficial for enhancing the effectiveness and achieving rapid and accurate detection of tubular joint weld by employment of visual beam and ultrasonic phased array technology.