特高压输电芳纶纤维复合绝缘拉杆孔隙缺陷数值模拟及工艺优化  

NUMERICAL SIMULATION AND PROCESS OPTIMIZATION OF PORE DEFECTS OF ARAMID-FIBER COMPOSITE INSULATED TIE ROD FOR UHV TRANSMISSION

作　　者：梁起睿 叶金蕊 刘凯 颜丙越[1] 何剑飞 姬晓龙 LIANG Qi-rui;YE Jin-rui;LIU Kai;YAN Bing-yue;HE Jian-fei;JI Xiao-long(State Grid Smart Grid Research Institute Co.LTD,Beijing 102209,China;School of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang,Liaoning 110168,China;School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China;Tangshan Research Institute,Beijing Institute of Technology,Tangshan,Hebei 063000,China)

机构地区：[1]先进输电技术国家重点实验室,北京102209 [2]沈阳建筑大学材料科学与工程学院,辽宁沈阳110168 [3]北京理工大学宇航学院,北京100081 [4]北京理工大学唐山研究院,河北唐山063000

出　　处：《工程力学》2025年第5期264-272,共9页Engineering Mechanics

基　　金：先进输电技术国家重点实验室开放基金项目(GEIRI-SKL-2021-004)。

摘　　要：芳纶纤维绝缘拉杆是特高压输电工程应用中的一个关键部件。为解决特高压芳纶纤维绝缘拉杆生产过程中存在的孔隙缺陷问题,该文基于达西定律和连续性方程建立芳纶纤维增强复合材料真空浸渍工艺数值模拟方法及孔隙率预报模型。结合显微CT测试手段,深入探讨了芳纶纤维复合材料孔隙缺陷的形成机理,揭示了浸渍温度、速度、真空度等工艺参数对芳纶复合材料绝缘拉杆孔隙缺陷形成的影响规律。结果表明,所建立的孔隙率预报模型与实验测试结果具有良好的一致性,可以用来优化真空浸渍工艺方案。该文中芳纶纤维织物为平纹编织结构,其在真空浸渍过程中的最佳浸渍温度为50℃、浸渍速度为0.381 mm/s、真空度为80 kPa,满足实际工程需求。The aramid fiber insulated tie rod is a key component in the application of UHV power transmission.Based on Darcy's law and continuity equation,a numerical simulation method for vacuum impregnation process of aramid fiber reinforced composites and a porosity prediction model were established to solve the problem of pore defects in the production of UHV aramid fiber insulated tie rod.The formation mechanism of pore defects in aramid fiber composites was investigated by means of micro-CT,and the influence of impregnation temperature,speed,vacuum degree and other technological parameters on the formation of pore defects in insulating tie rod of aramid fiber composites was revealed.The results show that the porosity prediction model is in good agreement with the experimental results and can be used to optimize the vacuum impregnation process.In this paper,the aramid fiber fabric is plain weave structure,and the optimum impregnation temperature,impregnation speed and vacuum degree in the vacuum impregnation process are 50℃,0.381 mm/s and 80 kPa,respectively,which meet the actual engineering requirements.

关 键 词：绝缘拉杆 芳纶纤维复合材料 孔隙缺陷 数值模拟 工艺优化 

分 类 号：TB332[一般工业技术—材料科学与工程]