环冷机台车热结构耦合分析

Thermal-Structural Coupling Analysis of Circular Cooler Trolley

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 de- formation of the circular cooler trolley during steady operation processes are simulated and analyzed by direct cou- pled 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 re- suits of research reveal that the highest temperature is 151.1 ℃ on the end face of the lateral beam, and the big- gest 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.