管路系统计算机辅助设计方法研究

Study on CAD Method for Aeroengine Pipeline System

为进行计算机辅助管路系统敷设 ,本文归纳出 9条管路 CAD规则 ,探讨了 3种管路敷设方法。为满足管路设计规则 ,根据管路系统的复杂性和计算机辅助敷设的特点 ,本文提出了先敷设粗管再分区敷设最后解决跨区域管路的 WRS法。它按照先重后轻、先短后长、先难后易的敷管原则 ,体现了局部最优从而达到全局最佳的原理。文中着重介绍了该方法的思路 ,并结合在电子模型样机上的敷管实例及过程 ,分析了该方法的特点 。

This paper summarizes nine principles of CAD aeroengine pipe routing and considers three approaches of CAD pipe routing.According to the complexity of aeroengine pipeline system and the features of computer aided routing,WRS(Wide in diameter,Region,Stride) approach is provided,that is first to route tubes Wide in diameter,then in dividing Region,last tubes of Striding regions.The approach conforms to rules of routing from wide in diameter to narrow,from short in length to long,from difficult in layout to easy.It bases on the principle that optimization in local region can reach to overall optimization of pipeline system.Considering the feature of 3D view for computer aided pipe routing,the WRS method avoids exchanging between the overall view and local view in the electronic engine mockup ,especially routing in dividing region.A pipeline system layout was successfully made on an electronic mockup by using the WRS approach.It is proven that the WRS method can gain success for only once,and shorten the period of design.The presented method is useful to aeroengine pipeline system design.