空心复合绝缘子端部结构对弯曲强度的影响  

Influence of the End Structure of Hollow Composite Insulator on Bending Strength

作　　者：韦晓星[1] 李西育[2] 何庆文 楚金伟[1] 卢文浩[1] 刘广义[2] 魏劲容[2] 党镇平[2] WEI Xiaoxing;LI Xiyu;HE Qingwen;CHU Jinwei;LU Wenhao;LIU Guangyi;WEI Jinrong;DANG Zhenping(EHV Power Transmission Company Maintenance&Test Center,CSG,Guangzhou 510663,China;Xi'an High Voltage Apparatus Research Institute Co.,Ltd.,Xi'an 710077,China;H&G Insulator Co.,Ltd.,Liling 412207,China)

机构地区：[1]中国南方电网超高压输电公司检修试验中心,广州510663 [2]西安高压电器研究院有限责任公司,西安710077 [3]醴陵华鑫高能电气有限公司,湖南醴陵412207

出　　处：《电瓷避雷器》2021年第6期163-169,共7页Insulators and Surge Arresters

基　　金：国家自然科学基金青年科学基金项目(编号:51707021)。

摘　　要：空心复合绝缘子是高压电器设备的重要外绝缘部件,其端部连接结构对产品机械性能影响很大。目前常见的端部连接结构有间隙配合和过盈配合两种,但相关对比研究很少。笔者以某典型规格500 kV空心复合绝缘子为研究对象,采用有限元仿真分析和分组试验的方式,研究了不同端部连接结构的弯曲特性。研究结果表明,当施加相同弯曲负荷时,间隙配合绝缘管承受的应力比过盈配合大,间隙配合最终的破坏值会相对偏小。主要尺寸相同的两种端部连接结构样品,过盈配合弯曲破坏值比间隙配合弯曲破坏值高约11.6%。Hollow composite insulator is an important external insulation component of high voltage apparatus, and its end connection structure has a great influence on the mechanical properties of the product. At present, there are two common end connection structures: clearance fit and interference fit, but few comparative studies have bee made. Taking a typical 500 kV hollow composite insulator as the research object, the bending characteristics of different end connection structures are studied by means of finite element simulation analysis and group test. The results show that when the same bending load is applied, the stress of clearance fit insulating tube is larger than that of interference fit, and the final failure value of clearance fit is smaller. The bending failure value of interference fit is about 11.6% higher than that of clearance fit for the two end connection structures with the same main size.

关 键 词：空心复合绝缘子 端部连接结构 有限元 弯曲试验 

分 类 号：TM216[一般工业技术—材料科学与工程]