钠冷快堆组件编码自动识别装置的试验研究及应用

Experimental Research and Application for Subassembly CodingAutomatic Identification of Sodium-cooled Fast Reactor

为保证钠冷快堆入堆组件的正确性,本文设计将组件编号转换为二维码并标记在组件上,在新组件转运设备上安装读码设备,通过读码设备对入堆新组件编码进行自动识别,将组件编码转换为组件编号并通过通讯传递至燃料操作监控系统。监控系统将其与换料计划中的组件编号进行比较,可判断转运的入堆新组件是否正确,提高组件操作的可靠性和安全性。为确定组件编码的各项技术参数,通过枚举法分析并总结了影响组件编码识别的各种因素,确定出单一因素试验方案,最终通过各种参数与功能试验,获得了适用于大型快堆电站组件编码自动识别装置的组件编码各项参数,试验结果证明研发目标完全实现。

The sodium-cooled fast reactor uses liquid metal sodium as the coolant,and the entire external and internal refueling operations are carried out in a fully enclosed environment,and the operation process of the components is not visible.To ensure the correctness of the sodium-cooled fast reactor components,the design converted the component number into a two-dimensional DataMatrix(DM)code and marked it on the head position of the component through direct identification technology(DPM).An industrial advanced and reliable code reading device(reader)was installed on the new component transfer equipment(new component loader).When the new component was put into the reactor,the code was automatically recognized by the reader,and the component code was converted into a component number and transmitted to the fuel operation monitoring system through communication.The monitoring system compared it with the component numbers in the refueling plan to determine whether the transported new components were correct,improving the reliability and safety of component operations.To determine the size and depth of component codes,16 component codes consisting of 4 sizes and 4 depths were provided as the test sample library based on the engineering site conditions.In order to determine the optimal component code from the experimental sample library,combined with the engineering site conditions,four main factors affecting the determination of component code were analyzed and summarized through enumeration method:installation angle of code reading equipment,offset angle,component type,and component movement speed.Since these four factors had no interaction with each other,a single factor experimental plan was determined that each experiment only changed one influencing factor,and the rest were fixed as fixed values,which were constant factors.There are a total of 7 tests:control rod assembly code reading test,fuel rod assembly code reading test,reader installation angle code reading test,control rod coding offset angle test,fuel rod coding offset angle test,control rod coding motion test,and fuel rod coding motion test.The judgment basis for each experiment is that the average reading time and maximum reading time of the code reader are less than 500 ms,and the success rate of reading is 100%.Through the first two experiments,the experimental sample library was preliminarily optimized,and then the optimized sample library was used for testing the installation angle of the code reader to screen out the optimal installation angle.Then,the sample library was further streamlined and optimized through encoding offset angle experiments,and finally,the optimal component encoding was determined through encoding motion experiments.