• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>World Tribology Congress III 2005 vol.2 >Journal Bearing Misalignment As An Extension Of Knowledge-Base Of Large Power Turboset Diagnostic System
【24h】

Journal Bearing Misalignment As An Extension Of Knowledge-Base Of Large Power Turboset Diagnostic System

机译：轴颈轴承不对中作为大功率涡轮机组诊断系统知识库的扩展

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the paper presented are course and results of investigations of the influence of slide bearing bush and shaft mutual misalignment on the dynamic properties of the large power turboset. Former numerical models used for simulations assumed coaxial position of a bush and journal. Engineering experience and practical cases led to development of a slide bearing model taking into account a misalignment. The defect was simulated by means of numerical model of the turboset. Simulation was performed for each bearing individually in both, horizontal and vertical planes. Maximum values of the skewness angle were calculated for each bearing at both planes with a criterion of minimal oil film thickness. The influence of the misalignment on dynamic properties of turboset was presented with a particular focus on amplitudes of relative and absolute vibration. Those quantities are measured by a condition monitoring system. Basing on the results of the simulation multiple defect-symptom diagnostic relations were built. These diagnostic relations were used as learning and testing data sets for a knowledge base of an diagnostic system based on the inverse diagnostic model. This diagnostic system is implemented at one of Power Stations.
机译：本文介绍了滑动轴承衬套和轴相互未对准对大功率涡轮机组动力特性的影响的过程和研究结果。用于模拟的以前的数值模型假定衬套和轴颈处于同轴位置。工程经验和实际案例导致开发了考虑到未对准的滑动轴承模型。利用涡轮机组的数值模型对缺陷进行了仿真。对每个轴承分别在水平面和垂直平面上进行了仿真。计算每个轴承在两个平面上的偏斜角的最大值，以最小油膜厚度为标准。提出了失准对涡轮机组动力特性的影响，特别着重于相对振动和绝对振动的幅度。这些数量由状态监视系统测量。根据仿真结果，建立了多种缺陷症状诊断关系。这些诊断关系被用作基于逆诊断模型的诊断系统知识库的学习和测试数据集。该诊断系统在电站之一中实施。

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