含非连续加强圈覆土卧式容器的屈曲安全评价及影响因素分析
|
摘要
外压失效是覆土卧式容器的重要失效模式。通常,在其内部设置加强圈以提高部件的刚度,但部分工况条件下需要对连续的加强圈进行切割,这将影响覆土卧式容器的外压强度。以含非连续加强圈的卧式储罐为研究对象,针对某给定加强圈切割角度,计算得到了该部件的外压强度。同时,开展了外压屈曲强度相关因素的敏感度研究,包括加强圈的切割角度、有无腹板等。结果表明,容器的屈曲强度随着切割角度的增大而不断降低,其降低程度与切割角度直接相关;在非连续加强圈处布置腹板,可显著提高容器的临界失稳压力。
External pressure failure is an important failure mode of underground horizontal vessels. Usually,a reinforcement ring is arranged inside it to increase the rigidity of the component. However,it is required to cut the continuous reinforcement ring under some working conditions. This will affect the external pressure strength of the underground horizontal vessels. With the horizontal storage tank with non-continuous reinforcement ring as the research object,the external pressure strength of the component was obtained through calculation for the cutting angle of a given reinforcement ring. At the same time,the sensitivity of the factors related to the external buckling strength was studied,including the cutting angle of the reinforcement ring,the presence or absence of webs,etc. The results show that the buckling strength of the vessel decreased with the increase of the cutting angle,and the degree of reduction was directly related to the cutting angle; the arrangement of the web at the non-continuous reinforcement ring could significantly increase the critical instability pressure of the vessel.
External pressure failure is an important failure mode of underground horizontal vessels. Usually,a reinforcement ring is arranged inside it to increase the rigidity of the component. However,it is required to cut the continuous reinforcement ring under some working conditions. This will affect the external pressure strength of the underground horizontal vessels. With the horizontal storage tank with non-continuous reinforcement ring as the research object,the external pressure strength of the component was obtained through calculation for the cutting angle of a given reinforcement ring. At the same time,the sensitivity of the factors related to the external buckling strength was studied,including the cutting angle of the reinforcement ring,the presence or absence of webs,etc. The results show that the buckling strength of the vessel decreased with the increase of the cutting angle,and the degree of reduction was directly related to the cutting angle; the arrangement of the web at the non-continuous reinforcement ring could significantly increase the critical instability pressure of the vessel.
引文
[1]周文武,章秋香,陈海霞.车道下埋地卧式容器的设计计算[J].化工设备与管道,2007,44(1):16-17.
[2]詹晶,惠虎,董樑.加强圈包角对罐车容器外压稳定性影响研究[J].压力容器,2016,33(11):33-38.
[3]童长河,刘康林,孙太平,等.带加强圈外压柱壳的稳定性分析[J].石油化工设备,2012,41(5):28-32.
[4]裴召华.埋地卧式容器的设计计算[J].石油化工设备,2006,35(6):33-35.
[5]潘长满.有关加油站埋地油罐防渗设计的研究[J].科学与财富,2016,8(5):753.
[6]压力容器:GB 150—2011[S].
[7]余伟炜,高炳军. ANSYS在机械与化工装备中的应用[M].第2版.北京:中国水利水电出版社,2007.
[8] Teng J G. Buckling of thin shells:recent advances and trends[J]. Applied Mechanics Reviews,1996,49(4):263-274.
[9]刘敏珊,董其伍,刘彤.过程装备特殊零部件应力分析[M].北京:化学工业出版社,2009.
[10]杨国强,黄金祥.基于ANSYS/Workbench的LPG覆土罐有限元分析设计方法[J].压力容器,2018,35(6):36-45.
[11]齐晓娣,崔晓云,杨翠娟,等.埋地式液化石油气储罐的设计[J].化工装备技术,2012,33(1):43-45.
[12]时米波.埋地卧式容器外载荷分析[J].石油化工设备,2016,45(4):23-26.
[13]张继伟,雷艳,王剑,等.埋地大口径蝶阀基于刚度、密封性能的最大弯曲载荷研究[J].流体机械,2017,45(10):37-41.
[14]刘怡,何庆中,陈玺,等.全焊接式球阀管线系统的抗外载荷能力分析[J].流体机械,2018,46(5):31-34.
[15]寿比南,杨国义,徐峰,等. GB 150—2011《压力容器》标准释义[M].北京:新华出版社,2012.
[2]詹晶,惠虎,董樑.加强圈包角对罐车容器外压稳定性影响研究[J].压力容器,2016,33(11):33-38.
[3]童长河,刘康林,孙太平,等.带加强圈外压柱壳的稳定性分析[J].石油化工设备,2012,41(5):28-32.
[4]裴召华.埋地卧式容器的设计计算[J].石油化工设备,2006,35(6):33-35.
[5]潘长满.有关加油站埋地油罐防渗设计的研究[J].科学与财富,2016,8(5):753.
[6]压力容器:GB 150—2011[S].
[7]余伟炜,高炳军. ANSYS在机械与化工装备中的应用[M].第2版.北京:中国水利水电出版社,2007.
[8] Teng J G. Buckling of thin shells:recent advances and trends[J]. Applied Mechanics Reviews,1996,49(4):263-274.
[9]刘敏珊,董其伍,刘彤.过程装备特殊零部件应力分析[M].北京:化学工业出版社,2009.
[10]杨国强,黄金祥.基于ANSYS/Workbench的LPG覆土罐有限元分析设计方法[J].压力容器,2018,35(6):36-45.
[11]齐晓娣,崔晓云,杨翠娟,等.埋地式液化石油气储罐的设计[J].化工装备技术,2012,33(1):43-45.
[12]时米波.埋地卧式容器外载荷分析[J].石油化工设备,2016,45(4):23-26.
[13]张继伟,雷艳,王剑,等.埋地大口径蝶阀基于刚度、密封性能的最大弯曲载荷研究[J].流体机械,2017,45(10):37-41.
[14]刘怡,何庆中,陈玺,等.全焊接式球阀管线系统的抗外载荷能力分析[J].流体机械,2018,46(5):31-34.
[15]寿比南,杨国义,徐峰,等. GB 150—2011《压力容器》标准释义[M].北京:新华出版社,2012.