导管架大直径钢管斜口快速绘制内外坡口线  

Quickly Drawing Inner and Outer Groove Profile of Large Diameter Steel Pipe Bevel in Jacket

作　　者：吴振华 艾绍武 侯荣 WU Zhenhua;AI Shaowu;HOU Rong(Shenzhen Chiwan Sembawang Engineering Co.,Ltd.,Shenzhen 518068,Guangdong,China)

机构地区：[1]深圳赤湾胜宝旺工程有限公司,广东深圳518068

出　　处：《中国海洋平台》2024年第6期102-106,共5页China offshore Platform

摘　　要：针对导管架建造过程中一定数量的大直径钢管采用样板图绘制内外坡口线效率低的问题,提出满足生产要求、实操性强、便捷的近似内外坡口线绘制方法。分析国内已有的导管架数据发现,该类钢管都是管与平面相交的类型,直径≥2 m。通过几何分析和大量的数据对比,得到如下结果:当轴交角在一定的范围内时,钢管外表面0°点和180°点距离最短的线与理论外坡口线十分接近,可替代理论外坡口线用于生产;当轴交角在一定范围内时,选定一个固定值绘制的近似内坡口线与理论内坡口线也十分接近,可替代理论内坡口线用于生产。这2种线绘制过程较为方便,可大幅提高作业效率。In response to the problem of low efficiency in drawing inner and outer groove profile using template drawings for some large diameter steel pipes during the construction process of the jacket,a drawing method that meets the production requirements,is of strong practicality,and is convenient to approximate the inner and outer groove profile is proposed.By analyzing the existing domestic jacket data,it is concluded that these types of steel pipes have a common point that both of them intersect with a plane,with a diameter≥2 m.Through geometric analysis and extensive data comparison,it is found that:when the axis intersection angle is within certain range,the profile with the shortest distance between the 0°and 180°points on the outer surface of the steel pipe is very close to the theoretical outer groove profile,which can replace the theoretical outer groove profile for production;when the axis intersection angle is within certain range,the approximate inner groove profile drawn with a fixed value is also very close to the theoretical inner groove profile,which can replace the theoretical inner groove profile for production.These two profile drawing methods are very versatile and can greatly improve work efficiency.

关 键 词：外坡口线 内坡口线 钝边线 0°点 180°点 

分 类 号：TG481[金属学及工艺—焊接]