绝缘材料
絕緣材料
절연재료
INSULATING MATERIALS
2013年
5期
37-42
,共6页
邱志斌%姚文军%李慧慧%阮江军%张恩伟%魏晓伟%段大刚
邱誌斌%姚文軍%李慧慧%阮江軍%張恩偉%魏曉偉%段大剛
구지빈%요문군%리혜혜%원강군%장은위%위효위%단대강
高压隔离开关%支柱瓷绝缘子%机械特性%弯曲负荷%扭转负荷%应力应变
高壓隔離開關%支柱瓷絕緣子%機械特性%彎麯負荷%扭轉負荷%應力應變
고압격리개관%지주자절연자%궤계특성%만곡부하%뉴전부하%응력응변
high voltage disconnector%porcelain post insulator%mechanical properties%bending load%tor-sional load%stress and strain
针对隔离开关机械操作应力引起支柱瓷绝缘子断裂的问题,采用Ansys软件建立了支柱瓷绝缘子的力学仿真模型,仿真计算了绝缘子在弯曲和扭转载荷作用下的应变分布情况,并通过电阻应变测量技术对实际支柱瓷绝缘子进行机械力学试验。结果表明:支柱瓷绝缘子在承受弯矩和扭矩作用下,会在伞裙的伞根瓷柱上引起应力集中;弯曲负荷作用下,绝缘子自上而下各伞根处的应变逐渐增大,下节绝缘子的最大应变值约为上节绝缘子的2.7倍;扭转负荷作用下,上下两节绝缘子的应变分布比较均匀。
針對隔離開關機械操作應力引起支柱瓷絕緣子斷裂的問題,採用Ansys軟件建立瞭支柱瓷絕緣子的力學倣真模型,倣真計算瞭絕緣子在彎麯和扭轉載荷作用下的應變分佈情況,併通過電阻應變測量技術對實際支柱瓷絕緣子進行機械力學試驗。結果錶明:支柱瓷絕緣子在承受彎矩和扭矩作用下,會在傘裙的傘根瓷柱上引起應力集中;彎麯負荷作用下,絕緣子自上而下各傘根處的應變逐漸增大,下節絕緣子的最大應變值約為上節絕緣子的2.7倍;扭轉負荷作用下,上下兩節絕緣子的應變分佈比較均勻。
침대격리개관궤계조작응력인기지주자절연자단렬적문제,채용Ansys연건건립료지주자절연자적역학방진모형,방진계산료절연자재만곡화뉴전재하작용하적응변분포정황,병통과전조응변측량기술대실제지주자절연자진행궤계역학시험。결과표명:지주자절연자재승수만구화뉴구작용하,회재산군적산근자주상인기응력집중;만곡부하작용하,절연자자상이하각산근처적응변축점증대,하절절연자적최대응변치약위상절절연자적2.7배;뉴전부하작용하,상하량절절연자적응변분포비교균균。
According to the fracture problem of porcelain post insulators caused by mechanical operating stress, a mechanical model of post insulators was built by Ansys software to calculate the strain distribu-tion of insulators under bending and torsional load, and the actual mechanical properties of the porcelain post insulators were tested by resistance strain measurement technique. The results show that when the post insulator withstands the bending and torsion load, the sheds will cause stress concentration at the root between sheds. Under the effect of bending load, the strain at the root gradually increases from top to bottom of the insulator, and the largest strain of the lower insulator is about 2.7 times bigger than that of the upper insulator. Under the effect of torsional load, the strain distribution of upper and lower insulator is more uniform.