• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Proceedings of International Conference on Structural Mechanics in Reactor Technology >EFFECT OF SUPPORTING STRUCTURE STIFFNESSON THE DRIVE TRAIN ASSEMBLY OFAN INDUCED DRAFT COOLING TOWER UNDER SEISMIC EFFECTS
【24h】

EFFECT OF SUPPORTING STRUCTURE STIFFNESSON THE DRIVE TRAIN ASSEMBLY OFAN INDUCED DRAFT COOLING TOWER UNDER SEISMIC EFFECTS

机译：地震作用下支撑结构刚度对感应式冷却塔牵伸总成的影响

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In a nuclear power project an induced draft cooling tower, as a safety-related structure and part of the maincooling system, has to perform satisfactorily under designated seismic effects. While the structural elements canbe designed by conventional methods to ensure adequate safety, the seismic qualification of the mechanicalcomponents poses a challenge. The paper describes a methodology adopted for the seismic qualification of atypical Drive Train Assembly for the axial flow fan of an induced draft cooling tower, to ensure the structuralintegrity and functional operability of the assembly during Operating Base Earthquake and Safe ShutdownEarthquake conditions. This is achieved by performing a detailed finite element analysis of the rotatingequipment assembly consisting of the electric motor, gear box and fan along with the drive shaft between themotor and the gear box.The various components are modeled using beam elements, plate elements and spring elements to idealize theflexible connections and supports. The floor response spectra derived from a dynamic analysis of the overallstructure under stipulated seismic acceleration spectra are the main excitation inputs into the system.The results validate the adequacy of gaps for movement and the strengths of the couplings and bolts to withstandthe applied loads. The assumed modeling and analysis methodology are seen to be acceptable procedures forseismic qualification of important components of the cooling tower.
机译：在核电项目中，引流式冷却塔是与安全相关的结构，是主体的一部分 冷却系统，必须在指定的地震作用下令人满意地工作。虽然结构元素可以 通过常规方法进行设计，以确保足够的安全性，机械的抗震鉴定 组件带来了挑战。本文介绍了一种用于地震鉴定的方法。 典型的传动系统组件，用于抽风式冷却塔的轴流风扇，以确保结构 在操作基础地震和安全关机期间组件的完整性和功能可操作性 地震条件。这是通过对旋转进行详细的有限元分析来实现的 设备组件，包括电动机，齿轮箱和风扇以及驱动轴之间的驱动轴 电机和齿轮箱。 使用梁单元，板单元和弹簧单元对各种组件进行建模以理想化 灵活的连接和支持。从整体动态分析得出的地板响应光谱 在规定的地震加速度谱下的结构是系统的主要激励输入。 结果验证了运动间隙的充分性以及联轴器和螺栓承受的强度 施加的载荷。假定的建模和分析方法被认为是可接受的程序， 冷却塔重要部件的抗震鉴定。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号