摘要
针对带电更换特高压直线塔绝缘子串六线提线钩重量大,导致作业人员劳动强度大、危险系数高、工作效率低的问题,通过结构优化、碳纤维预浸料铺层工艺设计以及固化工艺探索,设计研制碳纤维六线提线钩。通过力学仿真对提线钩上主体和副钩分别进行受力特性分析,计算发现提线钩上主体受力薄弱部位位于顶端螺栓连接孔处,当施加3倍额定荷载(240 k N)时,最大变形位移为0.51 mm,最大应力为1.9×10~8 Pa;副钩受力薄弱部位位于副钩螺栓连接处,当施加3倍额定荷载(40 k N)时,最大位移为0.91 mm,最大应力为1.7×10~8 Pa。经力学试验测试,该提线钩最大破坏力为260 k N,满足240 k N的设计要求。碳纤维六线提线钩的成功研制,为碳纤维复合材料在特高压带电作业中的应用奠定基础。
Aiming at the problem of high labor intensity, high risk and low work efficiency of live replacing the insulator string of the UHV linear tower caused by the heavy weight of the current six-splitting wire hook, the hook made of carbon fiber composite is designed and developed through the improvement of its structure and the exploration of the carbon fiber prepreg laying process and curing process. The mechanical properties of the main body and the auxiliary hook of the six-splitting wire hook are analyzed by mechanical simulation. It is found that the weak part of the main body is located at the top bolt connection hole, when loaded three times of the rated load（240 k N）, the maximum deformation displacement is 0.51 mm and the maximum stress is 1.9×10~8 Pa; and the weak part of the auxiliary hook is also located at the bolt connection hole, when loaded three times of the rated load（40 k N）, its maximum deformation displacement is 0.91 mm and the maximum stress is 1.7×10~8 Pa. According to the mechanical test, the maximum destructive force of the hook is 260 k N, and the hook meets the design requirements of 240 k N. The successful development of the six-splitting wire hook lays the foundation for the application of carbon fiber composites in UHV live-line operation.
作者
刘兰兰
刘夏清
邹德华
牛捷
李稳
刘有源
李金亮
施宝香
LIU Lanlan LIU Xiaqing ZOU Dehua NIU Jie LI Wen LIU Youyuan LI Jinliang SHI Baoxiang(Live Working Center of State Grid Corporation of Hunan, Changsha 410000, Hunan Province, China Jiangsu Yoo-Better Composite Material CO., LTD., Jiangyin 214400, Jiangsu Province, China)
出处
《智能电网》
2017年第2期128-133,共6页
Smart Grid
关键词
碳纤维复合材料
带电作业
力学模拟
六线提线钩
特高压输电线路
carbon fiber composite
live working
mechanical simulation
six-splitting wire hook
UHV transmission line
