论文部分内容阅读
基于工程热力学理论及大型电站凝汽器的基本计算公式,结合机组在不同功率水平下的实际运行数据,计算比较凝汽器循环冷却海水入口温度tw1、凝汽器的端差δt、凝汽器循环冷却海水温升△t对凝汽器真空(背压)的影响率的大小,并进一步分析得出影响tw1、δt、△t三个变量的相关参数,给出控制这些参数以提高凝汽器真空的措施。依据机组在不同运行功率水平下tw1、δt、△t对凝汽器真空影响率的大小,提出相应的提高凝汽器真空值的方案。
Based on the engineering thermodynamics theory and the basic calculation formula of the large-scale power plant condenser, combined with the actual operation data of the unit under different power levels, the comparison is made between the inlet temperature tw1 of the seawater cooler, the terminal difference δt of the condenser, Circulating cooling seawater temperature △ t on the condenser vacuum (back pressure) the size of the impact, and further analysis of the tw tw, δt, △ t three variables related parameters are given to control these parameters to improve the condensing Vacuum measures. Based on the magnitude of tw1, δt, △ t influence on the condenser vacuum under different operating power levels, a corresponding scheme to increase the condenser vacuum is put forward.