低温设备热应力模拟分析  

Analysis of Thermal Stress for Cryogenic Equipment

作　　者：马建 Ma Jian(China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《山东化工》2024年第8期232-235,共4页Shandong Chemical Industry

摘　　要：低温精馏系统通过同位素组分富集,将目标组分从原料气中分离出来。低温精馏塔外部与大气环境接触,内部流体与塔体对流换热,因此整个换热过程引起的热量损失和热应力大小是验证结构设计合理性的关键。本文利用模拟软件,通过对连接冷凝器和塔节的真空过渡箱的热分析,获得连接箱处的温度梯度以及热量损耗,并进行温差应力和机械应力的耦合应力分析,评定连接箱的应力强度,确定强度设计的合理性。通过温度线性化处理和热损耗计算分析,提出较优化的改进措施,并对其进行热分析,评定热损耗,验证改进结构的合理性。The cryogenic distillation system separates components from feed gas by enriching isotope components.The outside of cryogenic distillation column contacts with the atmospheric environment,and the inner fluid connects with the tower body by heat transfer,so the key to verify the rationality of the structural design,is the heat loss and the thermal stress caused by the whole heat transfer process.In this paper,according to the thermal analysis with ANSYS,for the vacuum transition box connecting condenser and tower,the temperature gradient and heat loss at the connection box are obtained,and the coupled stress analysis of temperature stress and mechanical stress is carried out to evaluate the stress intensity of the connection box and determine the rationality of the intensity design.Through the temperature linearization treatment and calculation of heat loss,an optimum improvement measures is put forward,and the thermal analysis is carried out to evaluate the heat loss and verify the rationality of the improved structure.

关 键 词：低温精馏 热分析 耦合分析 热损耗 优化 

分 类 号：TQ050[化学工程]