电站配管设计中的旋转角度分析及计算

Rotation angle analysis and calculation in power plant pipe distribution design

旋转角度对电站管道工厂化预制及工地组装施工至关重要,但是如何找到正确的旋转角度一直是个难点。通过分析不同结构形式管道中隐藏的旋转角度,对此问题进行详细说明,得出管段上的旋转角度即是管段旋转前后所在平面间的二面角、管段间的旋转角度即是管段间的二面角的结论,并给出三角函数计算和CAD辅助计算2种具体数值计算方法,且CAD辅助计算方法更简单准确。

Rotation angle is very important for pipe precasting and site erection. However,it is difficult to determine the right rotation angle. By analyzing rotation angle hidden in pipe of different structure,the author claimed that the rotation angle is the dihedral angle of pipe section rotated before and after. Two calculation methods were provided. By comparison,CAD based calculation is more accurate than trigonometric function.