动态仿真在大型低温氦制冷系统中的应用

Application of dynamic simulation in large scale helium cryogenic systems

大型低温氦制冷系统仿真作为系统设计、分析、优化以及控制系统调试、创新的工具日益受到重视。仿真的可信度依赖于物性和模型的准确。首先简要地介绍氦物性参数的计算方法,比较了不同方法的适用范围和优缺点,为物性选取工作提供指导。其次,概述大型低温系统单元建模的方式以及常用流程模拟算法。以国内外各个仿真模拟器的建立和完善过程为主线,重点综述了近10年来氦低温系统仿真的研究进展和突出成就,并指出了各个仿真模拟器的特点和存在的问题。最后,总结了目前仿真的主要研究内容并对未来的发展方向进行预测。提供了大型低温系统中应用动态仿真的整体思路,为今后的科研工作提供指导。

Simulation of large scale helium refrigerators which is regarded as a tool to design, analyze, optimize complex systems and to commission, innovate new control systems has been received attention increasingly. The reliability of simulation resuits not only depends on the accuracy of property data but also models. First, calculation methods of helium thermodynamic properties and two different way of equipment modeling were introduced briefly. The advantages and disadvantages of them were compared. The particular emphasis was placed on the important milestones in the research of simulation of large scale helium cryogenic system at home and abroad in recent decades, the characteristics and the existing problems of the process software were marked. Finally, the main research directions and opinions on future development were put forward. This paper provided the basic idea of dynamic simulation used in large scale helium cryogenic systems.