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Application of isometric transformation and robust estimation to compare the measurement results of steel pipe spools
Open Geosciences ( IF 2 ) Pub Date : 2020-09-19 , DOI: 10.1515/geo-2020-0034
Świętoń Tomasz 1 , Kadaj Roman 1 , Oleniacz Grzegorz 1 , Skrzypczak Izabela 1
Affiliation  

Abstract Production of prefabricated pipe spools for the needs of the oil and gas industry requires precise determination of their shape and dimensions. The crucial moment of production is to measure the spool being built, compare it with the design and define the geometry corrections that should be applied at the construction stage. At present, the comparison of spools is usually done in a manual manner in a CAD program or other software dedicated for this purpose and is implemented by combining variously defined translations and rotations. This approach is time-consuming and the results strongly depend on the survey engineer’s experience. In this article, a method of comparing the shape of two spools, based on isometric transformation and robust estimation, has been proposed. This method can be used to automate the comparison process. In standard approach, applied by both design engineers and assemblers, spools are described by a set of coordinates and, in the case of flanges, by sets of appropriately defined angular values. A method of flange description suitable for use in the isometric transformation process has been proposed, and potential problems that may appear at the implementation stage of the algorithm have been discussed. The proposed method makes it possible to determine the elements of a spool that do not fit into the design project in a way that allows minimizing the number of corrections at the construction stage.

中文翻译:

等距变换与鲁棒估计在钢管线轴测量结果对比中的应用

摘要 石油和天然气行业需要的预制管轴的生产需要精确确定其形状和尺寸。生产的关键时刻是测量正在建造的线轴,将其与设计进行比较,并定义应在建造阶段应用的几何校正。目前,线轴的比较通常在 CAD 程序或其他专门用于此目的的软件中以手动方式完成,并通过组合各种定义的平移和旋转来实现。这种方法非常耗时,而且结果在很大程度上取决于勘测工程师的经验。在本文中,提出了一种基于等距变换和鲁棒估计的比较两个线轴形状的方法。此方法可用于使比较过程自动化。在由设计工程师和装配人员应用的标准方法中,线轴由一组坐标描述,在法兰的情况下,由一组适当定义的角度值描述。提出了一种适用于等距变换过程的法兰描述方法,并讨论了算法实施阶段可能出现的潜在问题。所提出的方法可以确定不适合设计项目的线轴元件,从而最大限度地减少施工阶段的修正次数。提出了一种适用于等距变换过程的法兰描述方法,并讨论了算法实施阶段可能出现的潜在问题。所提出的方法可以确定不适合设计项目的线轴元件,从而最大限度地减少施工阶段的修正次数。提出了一种适用于等距变换过程的法兰描述方法,并讨论了算法实施阶段可能出现的潜在问题。所提出的方法可以确定不适合设计项目的线轴元件,从而最大限度地减少施工阶段的修正次数。
更新日期:2020-09-19
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