汽机基础弹簧隔振支座的施工监理

An Exploring of Construction Supervision for The Bearer Installation of Spring Vibration Isolation for The Foundation of The Steam Turbine

弹簧隔振支座作为大型汽轮发电机基础的隔振装置,其施工质量的优劣直接影响到将来汽轮发电机的顺利安装及能否安全稳定地运行。目前弹簧隔振支座在德国、俄罗斯等国的发电厂运用较为广泛,虽然在国内的大型发电机组上的运用不多,但其使用范围却呈日益扩大的趋势。文中通过对连云港田湾核电站2×1000 MW汽轮发电机基础弹簧隔振支座的施工监理工作,提出了从原材料检查到弹簧隔振支座预压门架的安装、弹簧隔振支座预压及安装的质量控制方法,总结出弹簧隔振支座预压和安装质量控制过程中的关键点。实践证明,连云港田湾核电站弹簧隔振支座的预压和安装满足设计和制造厂家的要求,其质量处于受控状态。

As a vibration isolation device for the foundation of large steam turbo-generator, the bearer installation quality of spring vibration isolation directly affects the successful installation and stable operation of the steam turbo-generator. At present, the bearer of spring vibration isolation is widely used in the power plants of some countries like Germany and Russia. Although the bearer of spring vibration isolation is less used in domestic, the application has a trend of development day by day. Based on the construction supervision work for the bearer installation of spring vibration isolation used as the foundation of the 2x 1000 MW steam turbo-generator of Tianwan nuclear power plant in Lianyungang, the method and the key of quality control in the whole process including raw material inspection, the bearer prepressing and installation of spring vibration isolation and the installation of the prepressing portal were summarized. Practice proves that the bearer prepressing and installation of spring vibration isolation for Tianwan nuclear power station in Lianyungang meet the requirements of design and manufacturer, and the quality is under control.