庆铁线仿真培训系统中的CAI软件的开发

计算机辅助教学（ＣＡＩ）软件是庆铁线仿真培训系统的一个组成部分,用来培训和考核培训人员．本文详细介绍了ＣＡＩ软件的组成结构、流程和使用方法,并提出了继续完善该软件的一些设想。     

成品油管道的混油计算方法研究

成品油管道在顺序输送过程中会产生混油,预测混油量成为成品油管道运行必不可少的环节。文中以奥斯汀混油公式为基础进行混油计算方法研究,针对影响混油的因素,通过整理和分析西南成品油管道近2年的混油数据,总结各站间奥斯汀混油公式计算值与实际混油量之间差值的变化规律,提出了更符合管道特性的混油计算方法。现场数据的验证结果表明:改进的混油计算方法不仅提高了计算精度,而且便于现场应用。     

克-乌成品油管道批输控制软件的开发研究

批输控制软件是成品油管道混油控制技术的核心,也是成品油管道SCADA系统的重要应用软件,克拉玛依－乌鲁木齐成品油管道的控制系统是建立在微机基础上的SCADA系统,批输控制软件承担着油品切换、混油段跟踪及末站混油切割等操作控制。介绍了软件的结构及主要的功能模块,重点讨论了批输控制过程中混油段处于不同位置各模块的执行模式,同时介绍了软件的现场应用情况。     

顺序输送管道通过大落差地段的特点

若在多山地区建设成品油管道，必然会遇到通过落差较大地段的问题。成品油管道多以顺序输送方式输油，本文就顺序输送管道通过大落差地段的特殊问题进行研究。根据顺序输送管道径经过大落差地段可能出现的运行工况，以瞬变流理的论为基础，以某拟建大落差送管道，通过计算机模拟分析，阐明通过大落差地段的顺序输送管道在一些运行工况下的特殊性。     

Reliability Evaluation of Compressor Systems Based on Universal Generating Function Method

At present, universal generating function (UGF) is a reliability evaluation technique which holds the bare-looking and easily program-realized merits in multi-state system. Thus, it is meaningful to apply this method to an actual industry system. Compressor systems in natural gas pipelines are series-parallel multi-state systems, where the compressor units in each compressor station work in a parallel way and these pressure-boosting stations in the pipeline are series connected. Considering the characteristic of gas pipelines, this paper develops two different UGFs to evaluate the system reliability. One (Model 1) establishes a system model from every compressor unit while the other (Model 2) considers the whole system as a combination of multi-state components. Besides, all the parameters of “weight” in UGFs are obtained from thermal-hydraulic models based on the actual engineering and “probability” from Monte Carlo simulation. The results show that the system reliabilities calculated by different UGFs are approximately equal. In addition, the demand of gas and the gas pipeline transportation system show a reverse trend. Because the number of parameters needed in Model 2 is far less than that needed in Model 1, Model 2 is simpler programming and faster solved.     

利用阀调节控制管道加油系统的水击压力

将阀调节基本原理应用于机场管道加油系统中,采用特征线法模拟了管道加油系统内阀门关闭的水力瞬变过程,结合工程实际提出了两种可行的阀调节防护措施;通过实例说明阀调节可以优化阀门的动作规律,显著降低加油系统管道中的水击压力。