核电机组凝汽器堵管对机组出力影响分析

The Effect Analysis of the Plugging of the Condensor on the Turbine Output of Nuclear Power Plant

凝汽器是核电厂二回路重要设备,随着机组运行,其传热管可能出现破损或断裂现象,需进行堵管处理。堵管将改变凝汽器热力性能,进而影响机组出力。本文通过建立凝汽器堵管热工计算模型,定量分析出不同循环水入口温度下不同堵管率对机组出力的影响程度,为工程技术人员准确评价堵管后凝汽器性能提供依据,计算模型的设计思路对兄弟电站开展类似工作具有参考意义。

The condenser is an important equipment of the second operation of the power plant, the tubular heat exchanger may be loop of nuclear power plant. During the damaged or cracked, which need to be treated by plugging in the pipe of heat exchanger. The plugging of pipe will change the thermal perform- ance of condenser and affect the output of the power plant. In this article, a thermal dynamic model of the plugging of a condenser tube is eastablished to analyse the effect of plugging rate on the output power the power plant with the different inlet temperature of circulating water. The results will provide the basic da- tas for the engineer to accurately evaluate performance of condenser after plugging a condenser tube. The idea of design the thermal dynamic model of the plugging is meaningful for other nuclear power plant to carry out similar work.