压水堆核电站二回路系统采用微过热蒸汽循环的分析

Analysis of Slight Superheaded Steam Cycle Applied in PWR Power Plant's Secondary Cycle System

介绍了压水堆核电站二回路系统采用微过热蒸汽循环的优缺点.并在用等效热降法优化热力系统后,分析了很过热蒸汽循环的系统热效率和高低压缸排汽湿度受新蒸汽初始压力、初始过热度及汽轮机分缸压力比的影响.在此基础上得出了循环的最佳运行参数范围.

Advantages and disadvantages of the slight superheated steam cycle used in PWR power plant's secondary cycle are presented.Af ter the thermal system is optimized by using the equivalent heat drop method, influerences of freshsteam initial pressure.degree of initial superheat and pressure ratios of turbine casings on system thermal efficiency of the slight superheated steam cycle and exhuast steam moistures of high and low pressure casings are analysed, based on which a range of optimal operation parameters of the cycle has been ob-aitned.