汽轮发电机组弹簧基础振动设计评判标准讨论

国际振动测试与评判标准ISO 10816是为回转类动力机器制订的,它同时又可用于动力机器基础,这一点在欧洲得到公认,但是在我国尚未达成共识.本文详细介绍了基础振动与机器振动的有关问题,经过讨论,得出以下结论:ISO 10816.2和我国国家标准GB 50040都经过了大量的工程实践检验,是可靠的,无论采用哪个标准进行汽轮发电机基础动力分析和设计,都能保证机器的安全运行;ISO 10816.2控制物理量采用振动速度,反映了不同频率的振动分量的贡献,不需要针对不同频率进行转换;ISO 10816.2的扰力输入和控制值更加符合当今国内外机械制造水平和平衡等级,与实测的振动也更加吻合;对于汽轮发电机基础,ISO 10816.2比GB 50040略为严格;ISO 10816已转化为国家标准GB/T 6075,适用于回转类动力机器的振动评判;对于国外工程和国内引进机型,ISO10816.2也适用于汽轮机发电机组基础.建议:加强国家标准GB/T 6075在回转类机器基础设计中的应用,积累经验;条件成熟后,在GB 50040修编之时将ISO 10816.2吸纳到我国的《动力机器基础设计规范》之中.

Vibration Criteria for Dynamic Machine Foundation

The Criteria ISO 10816 is prepared for the rotating type dynamic machine and confirmed for the civil engineers in Europe, available for the dynamic machine foundation, but not a consensus among domestic engi- neers. Discussion about the vibration of both the foundation and the dynamic machine is introduced. Our conclu- sion is that both the international code ISO 10816.2 and the national code GB 50040 are reliable, affer numerous engineering practice. Safety operation can be guaranteed no matter whatever code is used. Vibration velocity is used as the controlled unit for ISO 10816. 2, for the contribution of different frequency components. Frequency transferring among components is not needed. The exciting force and the vibration criteria for ISO 10816.2 is a- vailable for foreign and domestic current machinery manufacturing level and the balancing grade, and matching with the measurements. International code ISO 10816 has been transferred into national code GB/T 6075 ,availa- ble as the vibration criteria for rotating dynamic machine. ISO 10816.2 is also available for TG foundation for those export projects and imported domestic applications. Application is suggested for national codes GB/T 6075 for the foundation of the rotation machines to accumulate the experience. International code ISO 10816.2 is sug- gested for the national code GB 50040 when Code GB 50040 is in editing and revision.