新型氮气稳压器系统稳态和瞬态特性研究

Study of Steady and Transient Characteristics of New Nitrogen-Typed Pressurizer

根据氮气稳压器系统的基本理论模型,分析了氮气稳压器的稳态和瞬态运行特性,得到了两种不同波动流量工况下,稳压器压力、水位、水区焓、水区质量、氮气温度及氮气体积随时间的变化特性。结果表明:当波动流量为正波动时,稳压器的压力、水区质量、水区焓、水位、氮气温度均呈上升趋势,氮气的体积降低;而当波动流量为负时,各参数变化规律相反。研究表明,氮气稳压器的响应特性较好。两种工况下主要参数的变化趋势与理论分析相一致,但对该模型的实验验证以及控制研究仍需在将来的工作中进行。

Based on the basic theoretical model of nitrogen-typed pressurizer,this paper analyzed the steady and transient characteristics of the pressurizer,and the variations of the pressure,water level,water enthalpy,water mass,nitrogen temperature,nitrogen volume with the change of time are predicted using the model under two different fluctuation flow rate.It is found that,when fluctuating flow is positive,the pres-sure,water region mass,enthalpy,water level and nitrogen temperature all increase,while nitrogen volume decreases.When fluctuating flow is negative,the characters of nitrogen-typed pressurizer are opposite.In addition,the time response of nitrogen-typed pressurizer is very good.Furthermore,the effects on the steady and transient characteristics of main parameters as well as the experimental verification should be carried out in the future.