旋风除尘器切向矩形开孔部位的应力分析与强度评定
发布时间：2019-04-02 05:49
【摘要】：利用有限元软件ANSYS Workbench对切向矩形开孔旋风除尘器的受力进行研究,分析比较了矩形接管未经加强和矩形接管经加强筋加强后两种情况下开孔接管部位的应力分布以及变形情况,并采用线处理法对应力进行均匀化和当量线性化处理,依据JB 4732—1995进行应力分类和校核。结果表明:经加强筋加强后的旋风除尘器在开孔接管部位的变形明显减小,应力分布更加均匀;与未加强结构相比,最大等效应力由609.75 MPa降为434.6 MPa,有效降低了应力集中程度,结构强度得以提高,可满足强度要求。研究中,加强筋的设置方式能有效提高矩形开孔接管部位的结构强度,可为压力容器切向矩形开孔结构的加强设计提供参考。
[Abstract]:Using the finite element software ANSYS Workbench, the stress distribution and deformation of the tangential rectangular perforated cyclone dust collector are analyzed and compared under the condition that the rectangular pipe is not reinforced and the rectangular pipe is reinforced by the reinforcement of the reinforcing bars, the stress distribution and the deformation of the opening pipe are analyzed and compared, and the stress distribution and the deformation of the rectangular nozzle are analyzed. The stress was homogenized and linearized by the line treatment method, and the stress classification and verification were carried out according to JB 4732 / 1995. The results show that the deformation of the cyclone precipitator strengthened by reinforcement bars decreases obviously and the stress distribution is more uniform. Compared with the unreinforced structure, the maximum equivalent stress is reduced from 609.75 MPa to 434.6 MPa, the stress concentration degree is reduced effectively, and the strength of the structure is improved, which can meet the requirements of strength. In the study, the arrangement of reinforcement bars can effectively improve the structural strength of rectangular orifice nozzle, which can provide reference for the design of tangential rectangular opening structure of pressure vessel.
【作者单位】： 青岛科技大学机电工程学院;
【基金】：山东省自然科学基金项目(NO.ZR2014EEM017):假塑性流体搅拌流场洞穴时空演化规律研究 山东省科技发展计划项目(NO.2013YD09007):偏心射流与搅拌耦合诱发假塑性流体混沌混合特性研究
【分类号】：TH49
[Abstract]:Using the finite element software ANSYS Workbench, the stress distribution and deformation of the tangential rectangular perforated cyclone dust collector are analyzed and compared under the condition that the rectangular pipe is not reinforced and the rectangular pipe is reinforced by the reinforcement of the reinforcing bars, the stress distribution and the deformation of the opening pipe are analyzed and compared, and the stress distribution and the deformation of the rectangular nozzle are analyzed. The stress was homogenized and linearized by the line treatment method, and the stress classification and verification were carried out according to JB 4732 / 1995. The results show that the deformation of the cyclone precipitator strengthened by reinforcement bars decreases obviously and the stress distribution is more uniform. Compared with the unreinforced structure, the maximum equivalent stress is reduced from 609.75 MPa to 434.6 MPa, the stress concentration degree is reduced effectively, and the strength of the structure is improved, which can meet the requirements of strength. In the study, the arrangement of reinforcement bars can effectively improve the structural strength of rectangular orifice nozzle, which can provide reference for the design of tangential rectangular opening structure of pressure vessel.
【作者单位】： 青岛科技大学机电工程学院;
【基金】：山东省自然科学基金项目(NO.ZR2014EEM017):假塑性流体搅拌流场洞穴时空演化规律研究 山东省科技发展计划项目(NO.2013YD09007):偏心射流与搅拌耦合诱发假塑性流体混沌混合特性研究
【分类号】：TH49
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