GIS波纹管温度补偿能力影响因素研究

Study on the Factors Influencing the Temperature Compensation Ability of GIS Bellows

波纹管是补偿吸收GIS设备温变位移和温变应力的关键结构,掌握影响其温度补偿性能的因素具有重要的工程价值。文中在分析GIS波纹管补偿能力影响因素的基础上,基于Abaqus软件开展了GIS波纹管温度补偿能力与波纹管的壁厚、波高及布置方式的规律关系研究。案例仿真结果表明,适当减小波纹管壁厚或增加波纹管波高不仅能够增加波纹管的补偿量,而且有利于降低波纹管的应力;日常温度变化范围内,分布式布置的波纹管温度补偿能力优于集中式布置的波纹管,分布式布置有利于减少由重力及GIS设备内部气压所引起的初始形变。研究成果可为GIS波纹管的工程配置提供指导。

Bellows is the key structure to compensate and absorb the temperature variation displacement and stress of GIS equipment.It has important engineering value to master the factors that affect the temperature compensation performance.In this paper,the study on the relationship between the temperature compensation ability of GIS bellows and wall thickness,wave height and layout of the bellows is conducted on the basis of analyzing the influencing factor of compensation ability of GIS bellows and by the use of Abaqus software.It is shown by the simulation result of the case that appropriate decrease of the wall thickness or increase of the wave height of the bellows can not only increase compensation amount of the bellows,but also can be beneficial to the stress reduction of the bellows and,within the range of daily temperature variation,the temperature compensation ability of the bellows with distributed layout is superior to that of concentrated layout and the distributed layout is beneficial to reduce the initial deformation due to gravity and internal gas pressure of GIS equipment.The study result can provide guidance for the engineering configuration of GIS bellows.