基于冷端优化的二次循环冷却核电汽轮机选型研究

Research on Steam Turbine Selection of Secondary Recirculating Nuclear Power Unit Based on Cold-end Optimization

针对冷端采用二次循环冷却系统的核电汽轮机选型,基于最佳真空理论及年总费用最小法,结合二次循环冷却系统的特点,分析汽轮机选型的影响因素,提出方案并进行比较。结果表明:考虑冷端优化后的汽轮机型式更合理地匹配了汽轮机的实际情况,可为同类型核电汽轮机选型提供参考。

Aiming at the selection of steam turbines in nuclear power units with the secondary recirculating cooling system,based on the optimal vacuum theory and the minimum annual total cost method,combined with the characteristics of the secondary recirculating cooling system,the influencing factors of the steam turbine selection were analyzed,and the schemes were proposed and compared.Results show that,with considering the cold-end optimization,the actual operation of the steam turbine can be more reasonably matched for the selected steam turbine type.This may serve as a reference for the selection of steam turbines in similar nuclear power units.