工程设计规范及手册中均对夹套管的设计做了详细介绍,对夹套管弯头的曲率半径进行了规定,明确了不同公称直径的夹套管对应的夹套管弯头曲率半径,然而在项目运行过程中发现部分设计参数不满足实际需要。为了提升项目设计质量和施工效率,降低材料损耗及整个项目的投资运行成本,有必要研究出更加合理的夹套管设计方案。针对夹套管的特点,从实际应用需求出发,通过二维、三维进行实体模拟,再结合现场实物,对夹套管设计方案提出了改进。依据改进后的夹套管设计方案在项目运行的实际结果可知,改进后的设计方案合理有效,同时能够满足工程需要。研究结果可以为硫黄回收装置中夹套管设计提供借鉴。

 In engineering design codes and manuals, the design of jacketed pipe is fully given in detail, and the curvature radius of jacketed pipe elbow is stipulated. According to the codes and manuals, jacketed pipes of different nominal diameters match with the corresponding inner and outer pipe elbows of different curvature radii. However, in project operation, it is found that some of the design parameters cannot meet the actual demands. In order to improve the design quality and the construction efficiency of the project, reduce the material cost and the investment and operation cost of the whole project, it is necessary to put forward a more reasonable jacketed pipe design scheme. Based on the characteristics of jacketed pipe, starting with the actual application demands, and after 2D and 3D physical object simulation which is then compared with actual objects on site, an improved design scheme of jacketed pipe is provided in this paper. From the actual results of application of this improved jacketed pipe design scheme on project implementation, it is proven that this improved design scheme is more pragmatic and effective, and also can meet project requirements. This research results could provide a reference for future design of jacketed pipe in sulfur recovery unit.