岭澳核电站半速汽轮发电机基础结构型式分析
Analysis of Foundation Type for Half Speed Turbine Generator of LNPS
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摘要:
汽轮机是核电主厂房中最重要的电气设备之一，其运行的稳定性直接影响到整个发电系统的稳定。不同国家的规范对汽轮发电机基础的设计提出了不同的技术措施，这些技术措施均从降低基础的振动线位移或振动速度着手。正确的基础选型，能够以较小的经济投入达到较优的振动控制目的。对比分析了欧、美基础设计理念的差异，对弹簧隔振基础的隔振性能进行了详细的论述，指出了弹簧隔振基础能够更好地适用于欧洲汽轮机核电机组，使得机组具有隔振、抗震、不均匀沉降可调等诸多优点，能够确保国内首台百万级半速汽轮发电核电机组的安全运行。 Abstract:Turbine Generator is one of the most important electrical equipment of the main nuclear power plant, the stability of its operation directly affect the stability of the entire power system. Codes in different countries proposed different technical measures on the turbine generator foundation design, these measures have started from lower base line vibration displacement or vibration velocity. Selection of the proper foundation, smaller economies can achieve in vibration control. This paper analyzes the differences between Europe and America of its design concept, the isolation performance of the spring vibration-isolated foundation are discussed in detail, its show that the spring vibration-isolated foundation can be more suitable for the European nuclear power plant steam turbines. The high quality of spring vibration-isolated foundation in low frequency, aseismicity and adjustability is great to assure the safe operation of China first Nuclear 1 000 MW Class Half Speed Turbine Generator.
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