基于汽轮机的抗振性能优化研究

莫 伟华
广西百矿超元发电有限公司

摘要

采用有限元分析方法对某汽轮机组的振动抗性能进行验证，研究结果发现，对汽轮 MHM 机组的基础选择和系统安全性产生深远影响。此研究探讨了不同基础类型对振动抗性的影响，确定弹性基础因其卓越的振动滤波能力，显著减少振动带来的负面影响，因而强烈推荐其应用于MHM汽轮机组以提高运行安全性。研究表明，汽轮机组在前六阶振动模式下保持高可靠性，结构件内应力未达材料屈服极限，保证系统正常运作。然而，当振动超过六阶时，结构安全受到威胁，位移和多个支撑部件的应力超出安全范围，可能导致结构损坏，在高阶振动下运行安全无法保证，需要结构重新设计。本研究强调了弹性基础在提升振动抗性和系统安全性方面的重要性，并指出超过特定阶数振动时，需重新考虑设计，以确保系统的可靠和安全，为汽轮机组设计与性能评估提供宝贵指导，促进其持久可靠运行。

关键词

汽轮机；有限元分析方法；相对位移；抗振性能

参考

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