核电厂常规岛工艺管道振动改善研究

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Research on Process Pipe Vibration Improvements in NPP Conventional Island

Shanghai Nuclear Engineer Research and Design Institute, Shanghai, 200233, China

摘要: 核电厂常规岛工艺管道大部分采用柔性设计,致使管道在管内流体不稳定状态的扰动下极易产生振动。以某核电厂常规岛主蒸汽管道至除氧器加热管振动改造为例,在不改变管道原有布置的前提下,测量振动幅值并计算前5阶振动固有频率,进行振动原因分析及限值计算,提出改造方案。按设计方案改造后,主蒸汽管道至除氧器加热管前5阶振动固有频率显著提升,振动幅值降低到了ASME规范OM3要求的振动限值以下。
- 管道振动 /
- 振动限值 /
- 振动改善
Abstract: Process pipe in NPP conventional island may vibrate by unstable fluid disturbance,since most of the pipes are non-seismic and flexible designed.Use a specific NPP conventional island pipe as an example,this paper studied the vibration amplitude,the natural frequency,the vibration limit,the vibration reason,and proposed and implemented the improved methods without changing the piping layout.The result shows that after improvement,the natural frequency increased significantly and the vibration amplitude qualified the vibration limit of ASME code OM3.
- Pipe vibration /
- Vibration limit /
- Vibration improvement