隔离开关壳体有限元分析及力学性能测试
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摘要
为了验证金属绝缘开关壳体的力学性能,通过ANSYS有限元分析法和应变电测法分析了壳体在标准压力(0. 95Mpa)及以下应力分布情况,并对最大应力点进行应力线性分析。最大应力点位于拔口右侧相贯线处,约为117Mpa,与电测法实验值112. 9Mpa相近。在标准压力下壳体升压降压时应变均在弹性形变之内,没有发生塑性变形。应力线性分析结果显示筒体设计合理可靠。实验结果与有限元分析值相符。
The stress/strain/deformation distributions,of the cylindrical metal shell of the gas( SF6) isolated switch( GIS) under pressure,were mathematically modeled,theoretically analyzed,numerically simulated in finite element method with ANSYS software and experimentally measured. The simulated results show that the internal pressure has a major impact. To be specific,at the standard internal pressure of 0. 95 MPa,in the increase( decrease) of pressure,the strain changes within the limit of elastic deformation and no plastic deformation may occur;the strongest stress localizes along the right intersecting line on the right side of the pullout. The simulated strongest stress of 117 MPa is fairly in good agreement with the measured one( ～ 112. 9 MPa). The metal shell,modeled in the simulation,well satisfies the environmental safety requirements.
The stress/strain/deformation distributions,of the cylindrical metal shell of the gas( SF6) isolated switch( GIS) under pressure,were mathematically modeled,theoretically analyzed,numerically simulated in finite element method with ANSYS software and experimentally measured. The simulated results show that the internal pressure has a major impact. To be specific,at the standard internal pressure of 0. 95 MPa,in the increase( decrease) of pressure,the strain changes within the limit of elastic deformation and no plastic deformation may occur;the strongest stress localizes along the right intersecting line on the right side of the pullout. The simulated strongest stress of 117 MPa is fairly in good agreement with the measured one( ～ 112. 9 MPa). The metal shell,modeled in the simulation,well satisfies the environmental safety requirements.
引文
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[3]张养治,马文江.基于ANSYS的压力容器可靠性分析[J].中国设备工程,2017,03(下):186-187
[4]杜军鸽,张亚新,侯静,等.基于ANSYS的封头应力测试实验[J].轻工机械,2006,24(03):109-111
[5]王亚鸽,苏戈,王春艳,等.新型252 k V gis隔离开关铸造壳体压力-应力试验研究[J].铸造技术,2016,37(01):196-199.
[6]张剑刚,毕新刚,窦志勇,等.基于ansys workbench真空管道的屈曲分析[J].真空,2017,54(6):52-54
[7]张如一.应变电测与传感器[M].北京:清华大学出版社,1998:47-51
[8]佘皖宁.压缩机焊接机壳的水压试验分析与研究[D].沈阳:东北大学,2007
[9]蔺建文,伍天明,刘仁生,等. 126kV的GIS母线筒外壳应力分析[J].高压电器,1991,(01):7-10
[10]陈炳张,张朋彦,陈永利,等.正火对16MnDR钢板组织及力学性能的影响[J].金属热处理,2009,34(09):62-66
[11]文潮,关锦清,李运良,等. 16MnDR钢的动态拉伸力学性能实验研究[J].兵工学报,2010,31(01):255-259
[12]全国钢标准化技术委员会.低温压力容器用钢板:GB/T 3531-2014[S].北京:中国标准出版社,2014
[13]孙明道,刘喜,马晓红,等.铸造隔离开关壳体应力试验与分析研究[J].特种铸造及有色合金,2017,37(7):777-780
[14]全国高压开关设备标准化技术委员会.额定电压72.5kV及以上气体绝缘金属封闭开关设备[S].GB7674-2008.北京:中国标准出版社,2008
[15]黄鼎,梁宇荣.机械设计中复杂结构有限元分析中问题的处理分析[J].中国机械,2014(13):278-279
[16]胡八一,罗兵,孙承纬,等.球形爆炸容器水压试验应力测试及分析[J].实验力学,2001,16(02):207-212
[17]白海永,方永利. Ansys极限载荷分析法在压力容器设计中的应用[J].压力容器,2014,(01):47-50
[18] The American Society of Mechanical Engineers. ASEM Boiler and Pressure Vessel Code[S]. New York:Intentionally Left Blank,2013
[19]曹渊. Ansys18. 0有限元分析从入门到精通[M].北京:电子工业出版社,2018:11-13
[20]罗永峰,郑博通,郭小农.加劲筋对钢管相贯节点力学性能的影响[J].结构工程师,2012,28(01):37-45