核电站硼回收处理系统蒸发塔放大效应研究

Magnification Effect Study on Boron Recycling System's Evaporator of Nuclear Power Plant

针对核电站硼回收处理系统蒸发塔的实况和试验塔的放大效应,分析确定了影响蒸发塔中汽液两相接触过程的主要参数,并由此提出了原型塔与试验塔的相似准则;对试验塔设计时直接采用了与原型塔相同的塔板结构参数,由于试验介质和操作温度压力相同,自行满足了放大准则的要求,然后利用其余准则计算确定了满足放大要求的试验塔的塔径、回流液量和蒸汽量;通过对试验结果进行分析,论证了试验塔设计的正确性与合理性。

By studying the similar principle of device model testing the transfer process,aiming at the working condition of the boron recycling's evaporator system in nuclear power plant and the magnification effect of testing evaporator,the main parameters that affect gas-liquid phase contact process in the evaporator is analyzed and determined. Thus,the similarity criterion between the evaporator and the testing evaporator is put forward. According to the similarity criterion that put forward in this paper,it is used in the design of the testing evaporator the same plate structure parameters,testing medium,operating temperature and operating pressure of prototype tower. And this meets the magnification criterion Then,it is calculated that the diameter,backflow volume and steam flow of testing evaporator meeting the requirements of amplification are determined according to the remaining similarity criterion. The correctness and rationality of testing evaporator design is verified by analyzing the experimental results.