高塔型烟气脱硫吸收塔结构动力特性分析
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摘要
目前国内尚没有吸收塔结构设计规范,通过分析国内薄壁塔类结构相关规范,得出薄壁塔类结构的动力特性计算方法基本归结为仅考虑结构本身与仅考虑固液藕联作用两大类;根据有限元理论,对带有高塔的烟气脱硫吸收塔结构进行有限元建模,并进行了动力特性分析,对其刚度分布情况有了深入的了解;通过将有限元分析结果与按国内各薄壁塔类结构规范中的公式计算结果进行比较,得出吸收塔结构基本自振周期可按照《钢制塔式容器》中的公式进行计算,误差为4.5%.
Up to now,there is no design code for absorber tower structure.This paper analyzes the calculating method of dynamic properties in thin wall tower structure code in China and draws the conclusion that these methods can be divided into two kinds: only considering structure itself and only considering the interacting between structure and fluid.According to the theory of finite element,the finite element model of smoke desulphurization absorber tower with high tower is established.Then the dynamic properties analysis is conducted and the stiffness characters of the smoke desulphurization absorber tower with high tower structure are studied deeply.By comparing the finite element method results with the calculated results of those codes,the basic natural vibration period of absorber structure is calculated according to the formula in steel vertical vessels supported by skirt code.The discrepancy of the calculated results is 4.5%.
Up to now,there is no design code for absorber tower structure.This paper analyzes the calculating method of dynamic properties in thin wall tower structure code in China and draws the conclusion that these methods can be divided into two kinds: only considering structure itself and only considering the interacting between structure and fluid.According to the theory of finite element,the finite element model of smoke desulphurization absorber tower with high tower is established.Then the dynamic properties analysis is conducted and the stiffness characters of the smoke desulphurization absorber tower with high tower structure are studied deeply.By comparing the finite element method results with the calculated results of those codes,the basic natural vibration period of absorber structure is calculated according to the formula in steel vertical vessels supported by skirt code.The discrepancy of the calculated results is 4.5%.
引文
[1]国家发展和改革委员会.JB/T 4710-2005钢制塔式容器[S].北京:新华出版社,2005.
[2]中华人民共和国合金工业部.GB 50191-93构筑物抗震设计规范[S].北京:中国计划出版社,1995.
[3]中国石油天然气集团公司.GB 50341-2003立式圆筒形钢制焊接油罐设计规范[S].北京:中国计划出版社,2003.
[4]中国石油化工集团公司.SH 3048-99石油化工钢制设备抗震设计规范[S].北京:中国石化出版社,1999.
[5]国家粮食局.GB 50322-2001粮食钢板筒仓设计规范[S].北京:中国计划出版社,2001.
[6]许谋奎,马人乐.镇江电厂烟气脱硫吸收塔有限元计算分析[J].特种结构,2005,22(2):23-25.
[7]孙利民,张庆华,赵勇.卧式圆筒形储油罐液固耦合模态分析[J].郑州大学学报(工学版),2005,26(2):89-92.
[8]赵云峰,周利剑.立式储罐动力反应谱分析[J].世界地震工程,2005,21(1):55-60.
[9]万水,朱德懋.圆柱贮液器固液耦合模态分析[J].工程力学,2000,17(3):87-92.
[2]中华人民共和国合金工业部.GB 50191-93构筑物抗震设计规范[S].北京:中国计划出版社,1995.
[3]中国石油天然气集团公司.GB 50341-2003立式圆筒形钢制焊接油罐设计规范[S].北京:中国计划出版社,2003.
[4]中国石油化工集团公司.SH 3048-99石油化工钢制设备抗震设计规范[S].北京:中国石化出版社,1999.
[5]国家粮食局.GB 50322-2001粮食钢板筒仓设计规范[S].北京:中国计划出版社,2001.
[6]许谋奎,马人乐.镇江电厂烟气脱硫吸收塔有限元计算分析[J].特种结构,2005,22(2):23-25.
[7]孙利民,张庆华,赵勇.卧式圆筒形储油罐液固耦合模态分析[J].郑州大学学报(工学版),2005,26(2):89-92.
[8]赵云峰,周利剑.立式储罐动力反应谱分析[J].世界地震工程,2005,21(1):55-60.
[9]万水,朱德懋.圆柱贮液器固液耦合模态分析[J].工程力学,2000,17(3):87-92.
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