基于Simulink的换热系统数字孪生体构建方法研究  

Research on Digital Twin Construction Method of Heat Exchange System Based on Simulink

作　　者：余建平[1] 仇宏伟 焦艳平 姚立影[2] 马金伟[2] 齐兴 张富[2] YU Jian-ping;QIU Hong-wei;JIAO Yan-ping;YAO Li-ying;MA Jin-wei;QI Xing;ZHANG Fu(Scool of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Lanpec Technologies Limited,Lanzhou 730070,China)

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050 [2]甘肃蓝科石化高新装备股份有限公司,甘肃兰州730070

出　　处：《石油化工设备》2022年第1期1-6,共6页Petro-Chemical Equipment

基　　金：甘肃省科技重大专项(19ZD2GA004):基于板式传热元件的关键技术研究及工作应用;甘肃省重点研发计划(20YF8GA013):丙烷脱氢热能回收一体化装备技术开发。

摘　　要：数字孪生是真实物体在虚拟世界的一种建构过程。复杂热交换系统需要的控制参数预调、优化时间长,成本高。建立虚拟数字孪生系统,在孪生系统上进行控制参数的预调与优化,将调整好的参数直接应用于真实系统,可缩短调试时间、节约现场调控成本。计算流体动力学(CFD)技术建立的数字孪生体存在着计算周期长、难于真实表述热交换器瞬时换热特性问题。提出了元胞自动机模拟热交换器热动态响应过程的计算方法,通过MATLAB/Simulink平台实现了热交换器系统的数字孪生,通过实验测试检验了热交换器数字孪生体的可靠性。该方法具有较好的可行性和可靠性,在计算时间方面显著优于CFD方法,可以作为在MATLAB/Simulink虚拟系统上进一步研究实现参数预调、动态控制仿真分析的基础。Digital twinning is a construction process of real objects in the virtual world.The control parameters required by the complex heat exchange system need to be pre-adjusted and optimized for a long time with a high cost.The virtual digital twin system was established,the control parameters were pre-adjusted and optimized on the twin system,and the adjusted parameters were directly applied to the real system for shortening the debugging time and saving the on-site control cost.The numerical twin built by computational fluid dynamics(CFD)technology has a long computation period and is difficult to truly describe the instantaneous heat transfer characteristics of heat exchangers.A calculation method for the cellular automata to simulate the thermal dynamic response process of the heat exchanger was proposed.The digital twin of the heat exchanger system was realized through the MATLAB/Simulink platform,and the reliability of the digital twin of the heat exchanger was verified through experimental tests.This method has good feasibility and reliability and is significantly better than the CFD method in terms of calculation time.It can be used as a basis for further research and realization of parameter pre-adjustment and dynamic control simulation analysis on the MATLAB/Simulink virtual system.

关 键 词：热交换器 数字孪生体 构建方法 可行性 可靠性 

分 类 号：TQ051.5[化学工程]