电除尘器壳体工作过程中的流固耦合分析
|
摘要
以电除尘器工作过程中的烟气-壳体为研究对象,进行了单向流固耦合分析。建立了烟气及除尘器壳体的三维模型,导入至ANSYS Workbench有限元平台进行了流体分析,得到了壳体内表面所受到的烟气压力及热传递数据;对除尘器壳体进行了结构力学响应分析,获取了壳体在工作过程中烟气冲击作用下的变形、应力及应变数据。分析发现,壳体最大变形在烟气进出口顶部壁板与侧面壁板连接处以及侧面壁板中部处,侧面与顶面连接处会出现较大应力值。研究结果对实际工程运行中电除尘器的预防及保护具有借鉴意义。
The undirectional fluid-solid interaction of the smoke gas and electric precipitator shell under operation is analyzed in this paper. The 3D models of the smoke and precipitator shell are established firstly. Then,these models are loaded into the finite element software ANSYS for fluid calculation to obtain the stress and thermal data caused by the smoke acting on the inner surface of the precipitator shell. Finally,the mechanical structural analysis is carried out to obtain the total deformation,von-stress,and von-strain of the shell under the impact of smoke gas. It is found that the maximum deformation and stress appear at the joint position between the upper shell and the lateral shell. The research results can be used as a reference for the prevention and protection of electric precipitators in practical engineering.
The undirectional fluid-solid interaction of the smoke gas and electric precipitator shell under operation is analyzed in this paper. The 3D models of the smoke and precipitator shell are established firstly. Then,these models are loaded into the finite element software ANSYS for fluid calculation to obtain the stress and thermal data caused by the smoke acting on the inner surface of the precipitator shell. Finally,the mechanical structural analysis is carried out to obtain the total deformation,von-stress,and von-strain of the shell under the impact of smoke gas. It is found that the maximum deformation and stress appear at the joint position between the upper shell and the lateral shell. The research results can be used as a reference for the prevention and protection of electric precipitators in practical engineering.
引文
[1]喻俊霖,潘伶,陈金兴.基于ANSYS的布袋除尘器钢架有限元分析[J].机械,2009,36(10):26-28.
[2]HALLH J.An automatic voltage control system for electrical precipitators[J].IEEE Journals&Magazines,1954,73(2):124-127.
[3]高洋,王桂东.大型静电除尘装置主体钢结构的有限元分析[J].辽宁科技大学学报,2009,32(1):17-20.
[4]曹友洪,潘伶.电除尘器钢架有限元分析[J].电力环境保护,2007,23(6):10-12.
[5]孔春林,张德轩,陈宇,等.电除尘器灰斗的有限元分析[A].中国环境保护产业协会电除尘委员会.第十一届全国电除尘学术会议论文集[C].北京:中国环境保护产业协会电除尘委员会,2005.
[6]闫宗学,梁可新,包可宏.电除尘器结构的受力分析及优化[A].中国环境保护产业协会电除尘委员会.第十一届全国电除尘学术会议论文集[C].北京:中国环境保护产业协会电除尘委员会,2005.
[7]潘晋,罗福盛.复杂荷载作用下除尘器受力特性分析[A].中国钢结构协会.中国钢结构协会四届四次理事会暨2006年全国钢结构学术年会论文集[C].北京:中国钢结构协会,2006.
[8]RAJANIKANTH B S,JAYAN M V.Simulation of dust loaded V-I characteristics of a commercial thermal power plant precipitator[J].IEEE Transactions on Dielectrics and Electrical Insulation,2010,17(1):39-44.
[9]党小庆,任燕,马广大,等.电除尘器电场数值计算与性能预测的实验研究[J].科技导报,2007,25(20):36-42.
[10]郭婷婷,李雪梅,冯博.电除尘器内斜气流特性的数值研究[J].华北电力大学学报(自然科学版),2009,36(5):50-55.
[11]LEWISRW.The finite element method in the deformation and consolidation of porous media[M].HOBOKEN:John Wiley&Sons Ltd,1987.
[12]方滨,戚超龙.结构优化及其在电除尘器壳板设计中的应用[EB/OL].http://www.paper.edu.cn/releasepaper/content/200704-216,2007-04-9.
[2]HALLH J.An automatic voltage control system for electrical precipitators[J].IEEE Journals&Magazines,1954,73(2):124-127.
[3]高洋,王桂东.大型静电除尘装置主体钢结构的有限元分析[J].辽宁科技大学学报,2009,32(1):17-20.
[4]曹友洪,潘伶.电除尘器钢架有限元分析[J].电力环境保护,2007,23(6):10-12.
[5]孔春林,张德轩,陈宇,等.电除尘器灰斗的有限元分析[A].中国环境保护产业协会电除尘委员会.第十一届全国电除尘学术会议论文集[C].北京:中国环境保护产业协会电除尘委员会,2005.
[6]闫宗学,梁可新,包可宏.电除尘器结构的受力分析及优化[A].中国环境保护产业协会电除尘委员会.第十一届全国电除尘学术会议论文集[C].北京:中国环境保护产业协会电除尘委员会,2005.
[7]潘晋,罗福盛.复杂荷载作用下除尘器受力特性分析[A].中国钢结构协会.中国钢结构协会四届四次理事会暨2006年全国钢结构学术年会论文集[C].北京:中国钢结构协会,2006.
[8]RAJANIKANTH B S,JAYAN M V.Simulation of dust loaded V-I characteristics of a commercial thermal power plant precipitator[J].IEEE Transactions on Dielectrics and Electrical Insulation,2010,17(1):39-44.
[9]党小庆,任燕,马广大,等.电除尘器电场数值计算与性能预测的实验研究[J].科技导报,2007,25(20):36-42.
[10]郭婷婷,李雪梅,冯博.电除尘器内斜气流特性的数值研究[J].华北电力大学学报(自然科学版),2009,36(5):50-55.
[11]LEWISRW.The finite element method in the deformation and consolidation of porous media[M].HOBOKEN:John Wiley&Sons Ltd,1987.
[12]方滨,戚超龙.结构优化及其在电除尘器壳板设计中的应用[EB/OL].http://www.paper.edu.cn/releasepaper/content/200704-216,2007-04-9.