福清核电厂止回阀所在管线振动原因分析与处理

Cause Analysis and Treatment of Pipeline Vibration of Check Valve in Fuqing Nuclear Power Plant

福清核电厂2号机组辅助蒸汽转换器(STR)疏水冷却器至除氧器在正常功率运行期间管线及阀门发生剧烈振动,管线的剧烈振动对核电厂的安全、稳定、经济运行带来潜在的隐患。针对此管线振动问题进行分析,通过对正常功率运行期间疏水量进行理论分析,查找出分析管线剧烈振动的根本原因,并根据分析以及国内外振动处理经验制定了相应的专项处理措施,最终彻底消除了管线及阀门振动,使系统达到了安全可靠运行状态。

The auxiliary steam converter system(STR)of Unit 2 of Fuqing Nuclear Power Plant drains from the drain to the deaerator line during normal power operation. The severe vibration of the pipeline poses potential hidden dangers to the safety, stability and economic operation of the nuclear power plant. According to the analysis of the vibration problem of this pipeline, the theoretical analysis of the amount of hydrophobicity during normal power operation is carried out to find out the root cause of the severe vibration of the analysis pipeline, and corresponding special treatment measures are formulated according to the analysis and the experience of vibration treatment at home and abroad, and finally the vibration is eliminated completely to make the system safe and reliable.