高温气冷堆模拟机中控制棒和吸收球等效方法研究  

Equivalent Method for Control System in HTR Simulator

作　　者：魏春琳[1] 眭喆[1] 单文志[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084

出　　处：《原子能科学技术》2012年第B12期826-828,共3页Atomic Energy Science and Technology

基　　金：国家重大科技专项经费资助项目(ZX06901)

摘　　要：作为调节功率以及启停堆的重要手段的控制棒和吸收球是模拟机模型中不可忽略的一部分。控制棒和吸收球的运动是连续的,在模拟控制棒和吸收球的过程中,控制棒或吸收球有可能不能完全填充1个网格,若网格细化,则会增加计算时间,使计算速度达不到模拟机的要求。本文提出利用吸收等效的方法,通过改变控制棒和吸收球所在位置的网格的宏观截面,模拟控制棒在不同位置对于堆芯状态的影响。与设计结果进行比较可知,使用等效的宏观截面计算的控制棒和吸收球价值与简化前的价值基本吻合,说明吸收等效方法用于模拟机中的控制系统是可行有效的。Control rods and absorption balls are very important and necessary part as the role of the power adjustment and the reactor on and off.In the simulator,it could occur that one grid cannot be full filled with control rods or absorption balls.In the design,grid for control rods and absorption balls will be increased which can improve the accuracy of the worth of the control system.The thicker grids will increase the computer time,so this method cannot be used in the simulator.In this paper,equivalent method was mentioned based on the absorption equivalent.The macro-section can be changed as the position of the control rods or the absorption balls,so the simulator can reflect the change of the control system.The result of this method is fit well with the result of the design,and it can be concluded that the application of equivalent method in simulator is well done.

关 键 词：高温气冷堆 模拟机 控制棒 吸收球 

分 类 号：O571.5[理学—粒子物理与原子核物理]