论文部分内容阅读
应用ANSYS有限元分析软件对火力发电厂双曲线型冷却塔进行结构分析,主要探讨了在自重、温度和风荷载作用下,双曲线型冷却塔塔筒的位移、应力和内力分布规律.简单介绍了荷载的施加方法并建立了有限元模型,并对自重、温度和风荷载3种工况塔筒的受力特点进行了研究.结果表明:风荷载工况塔筒的喉部位移最大;自重工况塔筒的薄膜力大,且同一位置的子午向薄膜力大于环向薄膜力;温度工况塔筒的弯矩大,且在塔筒的中段弯矩恒定;风荷载工况塔筒同一位置的子午向薄膜力大于环向薄膜力,环向弯矩大于子午向弯矩.分析结果可为双曲线型冷却塔的结构设计提供参考依据.
The ANSYS finite element analysis software is used to analyze the structure of hyperbolic cooling tower in thermal power plant, mainly discussing the displacement, stress and internal force distribution of hyperbolic cooling tower with self-weight, temperature and wind load. The application of load and the establishment of the finite element model, and the gravity, temperature and wind load of the tower under three kinds of working conditions were studied.The results show that: the wind load tower crane throat displacement maximum; The force of the tower tube is large, and the meridional force of the same position is greater than that of the circumferential membrane force. The bending moment of the tower under the temperature condition is large and the bending moment is constant in the middle of the tower. The force of meridional thin film is greater than that of the circumferential thin film, and the bending moment in the toroidal direction is greater than the meridional bending moment.The analysis results can provide references for the structural design of hyperbolic cooling tower.