【作者】 梁培栋；

【导师】 于红英；

【作者基本信息】 哈尔滨工业大学 ， 机械设计及理论， 2011， 硕士

【摘要】 作为汽轮机主要辅机的凝汽器,内部管束的排列合理与否将会对其换热效果产生重要影响。凝汽器一般属于单件小批生产,需根据用户要求做针对性设计设计周期应尽量短,而凝汽器管束排列设计工作量大,传统的人工计算和制图周期过长。另外,由于冷却管数量庞大,人工排管容易造成计数误差。管束排列完成后,需要进行流场分析,人工的网格划分将非常耗费时间。因此,开发出一套管束自动排列和流场分析接口软件系统将能很好地解决上述问题。本文以AutoCAD2002为平台,以ObjectARX2002作为二次开发工具,在VisualC++6.0环境下开发出了一套均匀向心型管束排列和流场分析接口软件系统。本文首先简明阐述了ObjectARX的原理和框架,对用户提供的凝汽器均匀向心型管束排列样图的组成要素进行了剖析,提取出了这些组成要素所需的底层函数,开发出了实现管束排列所需的绘图工具。其次在明确用户需求的基础上,对管束排列和与STAR-CD流场分析的接口软件系统进行了总体规划,划分了三大功能,即管束排列功能、STAR-CD网格输出功能和参数存储功能。开发出了可以嵌入到AutoCAD系统的管束排列设计用户界面。针对管束排列提出了两种算法予以实现,一种是试凑法,另一种是基于Lingo与VC++结合的优化算法。对STAR-CD的网格结构进行了解析,得出了STAR-CD网格划分方法和网格数据的存储格式,对凝汽器管束排列网格要求进行了分析,得出了管束排列网格自动划分的算法。最后给出了使用该软件系统完成一张完整的管束排列图的步骤并给出了管束排列和网格划分实例,证明软件结构合理实用,完成了用户的要求。更多还原

【Abstract】 As the main steam turbine’s auxiliary, the arrangement of the tube of condenser has a major effect on heat transfer, and condenser’s production is generally single and small batch and needed to do specific design according to user’s requirements, so the design cycle should be as short as possible, while traditional condenser tube arrangement design takes a large amount of time to calculate and draft manually. In addition, because of large number of refrigeration tubes, to complete a piping diagram can cause errors. When tube arrangement is completed, flow field analysis is needed, and artificial mesh will be very time consuming. Software that can manipulate tube automated arrangement and flow analysis interface was developed to solve these problems.Based on AutoCAD 2002 and ObjectARX 2002, well-distributed parameterization design tubes and the flow field analysis interface software system were developed. The principle of ObjectARX and framework were analyzed and references provided by the customer were resolved. Drawing classes and functions were prepared. Parameters of tube arrangement were extracted, the master plan software of tube was arranged under a clear of user demand, and three major functional modules were divided: tube bundle arrangement design, STAR-CD grid output and data storage.The tube arrangement software function modules were arranged in a refined design decomposition, the arrangement of the two algorithms were summed up, one was based on trial and error, the other is based on Lingo, both of them could achieve the goals.Grid structures of the STAR-CD and STAR-CD grid data storage format were obtained and the grid requirements for arrangement of condenser tubes were analyzed, and the algorithm for mesh of the tube arrangement was obtained. Design parameters were stored intelligently based on the ACCESS2003 and SQL language.Finally, a full tube arrangement of the flow chart was completed; results showed that the software architecture proves reasonable and met with the customer’s requirements.更多还原