基于小位移旋量的浮动式核电站反应堆装卸料定位误差分析与优化

Positioning Error Analysis and Optimization of Floating Nuclear Power Plant Reactor Refuelling Based on Small Displacement Torsors

燃料组件装卸是核电站反应堆换料检修的一项重要操作,浮动式核电站由于运行环境特殊,其装卸料定位精度要求更高。本文基于小位移旋量(SDT)的公差建模方法对浮动式核电站反应堆装卸料的导向定位误差进行了分析,采用刚体动力学坐标系变换的方法得到了装卸料定位误差的表达式;采用MATLAB程序进行了模拟计算。对海洋条件下反应堆装卸料的极限倾斜量进行了分析,给出了最大倾角与海浪参数的关系,对燃料组件导向间隙量等关键参数进行了优化,并将其结果与试验数据进行了比较,相符性较好。

Fuel assembly loading and unloading is an important operation of nuclear power plant reactor refueling maintenance.Because of its special operating environment,the loading and unloading positioning accuracy of floating nuclear power plant is higher.Based on the tolerance modeling method of small displacement torsor(SDT),this paper analyzes the guidance and positioning error of reactor loading and unloading in floating nuclear power plant.Using the method of rigid body dynamic coordinate system transformation,the expression of loading and unloading positioning error is obtained;the simulation calculation is carried out using MATLAB program.The limit inclination of reactor loading and unloading under marine conditions is analyzed,and the relationship between the maximum inclination and wave parameters is given.The key parameters such as the guide clearance of the fuel assembly are optimized,and the results are compared with the experimental data,which are in good agreement.