支柱瓷绝缘子带有加强筋金属法兰的受力分析与设计  

Light-Weight Design for the Stiffened Metal Flange of Porcelain Post Insulator

作　　者：何远华[1] 刘占民[2] 齐德瑄[3] 焦永树[3] HE Yuanhua;LIU Zhanmin;QI Dexuan;JIAO Yongshu(Xi'an High Voltage Apparatus Research Institute Co.,Ltd.,Xi'an 710077,China;Tangshan High Voltage Porcelain Co.,Ltd.,Tangshan 063021,China;School of Mechanical Engineering,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]西安高压电器研究院有限责任公司,西安710077 [2]唐山高压电瓷有限公司,河北唐山063021 [3]河北工业大学机械工程学院,天津300401

出　　处：《电瓷避雷器》2021年第6期170-176,共7页Insulators and Surge Arresters

摘　　要：支柱瓷绝缘子的加强筋金属法兰结构尺寸一般由设计经验给定,然后由绝缘子的机械性能试验进行判定。这种设计方法不能真实反映金属附件实际受力情况,实际使用过程中会出现两种问题:一是安全裕量过高,造成材料浪费;二是安全裕度不足,导致发现问题延迟。笔者利用ANSYS平台对带有坚强筋的金属法兰进行设计,以金属附件实际应用的绝缘子所受额定荷载为基准,计算金属法兰各部位所承受的应力,相同规格的加筋金属法兰比无筋金属法兰内部最大等效应力减小44.37%,针对带有加强筋金属法兰的设计变量进行分析计算,得到了带有加强筋金属法兰尺寸调整后的等效应力数值。在保证绝缘子稳定运行的情况下,对带有加强筋金属法兰的设计提供了数据基础。试验结构表明,在满足绝缘子强度的要求下,某型号的带有加强筋的金属法兰重新设计后其重量可减轻13.90%~14.41%,有效的提高了带有加强筋金属法兰的经济性。Structural dimensions of stiffened metal flanges for porcelain post insulators are usually determined directly based on engineering experience. The safety margin might be much higher which often waste of materials. In this paper, ANSYS platform is used for lightweight design of stiffened metal flange, and the equivalent stress metal flange with original sizes under rated load is calculated. The maximum equivalent stress of stiffened flange with the same specification is 44.37% less than that of unreinforced flange. According to the design variables of the structure, the equivalent stress of the reduced size is obtained by cyclic calculation. Under the condition of satisfying its strength, the quantitative basis is provided for its lightweight design. The example shows that the weight of a certain type of accessories can be reduced by 13.90%-14.41% after optimizing the design to meet the strength requirement.

关 键 词：支柱瓷绝缘子 带有加强筋的金属法兰 轻量化设计 有限单元法 

分 类 号：TM216[一般工业技术—材料科学与工程]