220 kV SF_6断路器瓷套的胶装部位应力分析及其优化设计
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摘要
展开断路器的应力分析,研究其胶状部位的应力分布,对提高电气设备的安全运行具有重要意义。运用有限元的方法,计算了胶装部位结构参数设计下的断路器瓷套的应力分布。结果表明:适当加大胶装比、下胶装部位瓷套外径,合理选择法兰与瓷套之间的厚度和法兰内表面齿形结构,均可在一定程度上优化断路器的应力分布,从而提高其整体机械强度。
It is important to study the stress distribution of the circuit breaker and to study the stress distribution of the bonded parts,which is of great significance to improve the safe operation of the electrical equipment. The finite element method is used to calculate the stress distribution of the circuit breaker porcelain bushing under the structural parameters of the bonded parts. The results show that appropriately increase the bonded ratio,the outer diameter of the porcelain bushing of the under-adhesive part,reasonably select the thickness between the flange and the porcelain sleeve and the tooth-shaped structure of the inner surface of the flange,which can optimize the stress distribution of the circuit breaker to a certain extent,thereby improving the overall mechanical strength.
It is important to study the stress distribution of the circuit breaker and to study the stress distribution of the bonded parts,which is of great significance to improve the safe operation of the electrical equipment. The finite element method is used to calculate the stress distribution of the circuit breaker porcelain bushing under the structural parameters of the bonded parts. The results show that appropriately increase the bonded ratio,the outer diameter of the porcelain bushing of the under-adhesive part,reasonably select the thickness between the flange and the porcelain sleeve and the tooth-shaped structure of the inner surface of the flange,which can optimize the stress distribution of the circuit breaker to a certain extent,thereby improving the overall mechanical strength.
引文
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[2]刘晓明,郭娜,朱冬梅.高压SF6断路器灭弧室电场逆问题求解研究[J].沈阳工业大学学报,2006,28(4):384-387,413.LIU Xiaoming,GUO Na,ZHU Dongmei.Study on inverse problem of electric field for high voltage SF6 arc quenching chamber[J].Journal of Shenyang University of Technology,2006,28(4):384-387,413.
[3]王琼,温冰,赵建利,等.一起500 k V SF6断路器瓷套管爆裂事故的推断和分析[J].电瓷避雷器,2016(6):45-49.WANG Qiong,WEN Bing,ZHAO Jianli,et al.Influence and analysis of a porcelain bushing burst accident of500 k V SF6 circuit breaker[J].Insulators and Surge Arresters,2016(6):45-49.
[4]蔡洙郁,荆洪阳,樊利国.110 k V棒形悬式瓷绝缘子结构应力分析[J].绝缘材料,2005,38(4):32-35,38.CAI Zhuyu,JING Hongyang,FAN Liguo.The analysis of structural stress about rod porcelain insulator of 110 k V[J].Insulators and Surge Arresters,2005,38(4):32-35,38.
[5]WANG S S,YAN J J,NIU Y,et al.Stress analysis on 160k N porcelain rod insulator[J].Insulators&Surge Arresters,2002.
[6]吴光亚,孙岗,张锐,等.特高压空心复合绝缘子机械强度有限元计算分析[J].电瓷避雷器,2014(4):7-13.WU Guangya,SUN Gang,ZHANG Rui,et al.Calculation and analysis on mechanical strength of UHV hollow composite insulator by finite element method[J].Insulators and Surge Arresters,2014(4):7-13.
[7]杨海,杨明,宫云霞,等.±1 100 k V/16 k N支柱瓷绝缘子应力分析与选取[J].电瓷避雷器,2015(1):42-44.YANG Hai,YANG Ming,GONG Yunxia,et al.Stress analysis and selection of±1 100 k V/16 k N post porcelain Insulator[J].Insulators and Surge Arresters,2015(1):42-44.
[8]耿小亮,范春虎,艾绍贵,等.SF6电流互感器结构强度有限元分析[J].高压电器,2007,43(4):250-252.GENG Xiaoliang,FAN Chunhu,AI Shaogui,et al.Finite element analysis of SF6 current transformer's structure strength[J].High Voltage Apparatus,2007,43(4):250-252.