环冷机台车热结构耦合分析
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摘要
为消除环冷机台车体的热膨胀和热应力对环冷机运行及结构所造成的问题,本研究以国内某钢铁企业环冷机台车体为研究对象,利用ANSYS有限元分析软件,采用直接热力耦合方法,对环冷机台车在稳定工作过程中的温度场、应力场及位移量进行仿真计算和分析.计算过程中考虑了烧结矿及冷却空气与台车体的热交换,并且考虑了各种位移约束.研究结果表明环冷机在稳定运行的过程中台车体的最高温度达到151.1℃,出现于台车体外侧梁端面上,台车体的最大等效应力点位于内侧端面的轴端位置,数值为188 MPa,台车体内侧端面最大位移量约2.7 mm,台车外侧端面的最大位移量约为2 mm.
In order to solve operating and structural problems resulting from the thermal expansion and stress,the circular cooler trolley in an iron and steel company is researched.The temperature field,stress field and the deformation of the circular cooler trolley during steady operation processes are simulated and analyzed by direct coupled finite element method on the ANSYS platform.The factors considered in this simulation are as follows:the heat transfer between the circular cooler trolley and sinter or cooling air,and displacement constraints.The results of research reveal that the highest temperature is 151.1 ℃ on the end face of the lateral beam,and the biggest stress is 188 MPa in the inside of the beam.The biggest displacements in the lateral beam and the biggest displacement in the inside of the beam are 2.7 mm and 2 mm,respectively.
In order to solve operating and structural problems resulting from the thermal expansion and stress,the circular cooler trolley in an iron and steel company is researched.The temperature field,stress field and the deformation of the circular cooler trolley during steady operation processes are simulated and analyzed by direct coupled finite element method on the ANSYS platform.The factors considered in this simulation are as follows:the heat transfer between the circular cooler trolley and sinter or cooling air,and displacement constraints.The results of research reveal that the highest temperature is 151.1 ℃ on the end face of the lateral beam,and the biggest stress is 188 MPa in the inside of the beam.The biggest displacements in the lateral beam and the biggest displacement in the inside of the beam are 2.7 mm and 2 mm,respectively.
引文
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[2]张家元,张加楠,田万一.烧结环冷机液密封数值仿真研究[J].冶金设备,2014(3):1-5.
[3]何木光,王阿虎,易凯.一种新型密封装置在鼓风环冷机上的应用[J].冶金设备,2014(6):56-58.
[4]夏建芳,陈锦,赵先琼.烧结矿冷却过程数值仿真及环冷机漏风率研究[J].计算机仿真,2015,32(7):208-212.
[5]周洪亮,白明华.环冷机磁流变液密封研究[J].燕山大学学报,2013,37(6):513-521.
[6]Jang J Y,Chiu Y W.3-D transient conjugated heat transfer and fluid flow analysis for the cooling process of sintered bed[J].Applied Thermal Engineering,2009,29(14):2895-2903.
[7]易正明.氧化铝回转窑热工分析与控制应用研究[D].长沙:中南大学,2007.
[8]Wes G W J,Drinkenburg A A H,Stemerding S.Heat transfer in a horizontal rotary drum reactor[J].Powder Technology,1976,13(2):185-192.
[9]Lybaert P.Wall-particles heat transfer in rotating heat exchangers[J].International journal of heat and mass transfer,1987,30(8):1663-1672.
[10]张翔.缝槽壁面强制对流换热研究[D].哈尔滨:哈尔滨工业大学,2013
[11]李维特,黄保海,毕仲波.热应力理论分析及应用[M].北京:中国电力出版社,2004.
[12]辛文彤,李志尊,胡仁喜,等.ANSYS13.0热力学有限元分析[M].北京:机械工业出版社,2011.
[13]丁雪兴,吴昊,严如奇,等.基于ANSYS的机械密封热力耦合变形计算及分析[J].兰州理工大学学报,2014,40(5):41-45.