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就核电汽轮机与火电汽轮机的差异以及由此差异引起的湿蒸汽汽轮机通流性能表征与热平衡计算的难点进行了论述,提出了利用特征通流面积CFA来表征核电汽轮机的通流性能和采用小误差热平衡法来计算核电汽轮机的热平衡图,应用小误差热平衡法和特征通流面积成功开发了核电站热力性能在线监测与分析系统和核电站汽轮机全面热力试验计算软件,并将这两项技术应用在大亚湾核电机组热力性能在线监测与分析系统和岭澳二期核电机组全面热力试验中.结果表明:实际运行监测中特征通流面积监测值的测量精度可控制在1%以内.
The differences between nuclear power turbines and thermal power turbines and the difficulties in characterizing the through-flow performance and heat balance of wet-steam turbines caused by this difference are discussed. The characteristic of flow through area CFA is used to characterize the flow performance of nuclear power turbines and to adopt small errors Heat balance method to calculate thermal equilibrium diagram of nuclear power turbine, the application of small error heat balance method and the characteristic flow area of the successful development of the thermal performance of nuclear power plant on-line monitoring and analysis system and nuclear power plant turbine comprehensive thermal test calculation software, and these two technologies used in Daya Bay Nuclear Power The unit thermal performance on-line monitoring and analysis system and the comprehensive thermodynamic test of Ling Ao Phase II nuclear power unit.The results show that the measurement accuracy of the monitoring value of the characteristic through-flow area in actual operation monitoring can be controlled within 1%.