中子活化元素在线分析仪的结构与应用

Structure and application of on line analyzer for neutron activation element

介绍了中子活化元素在线分析仪的组成及内部采用小模块化结构、无需切断皮带、通道高度可根据工艺调整、具有水平调节机构、便于整体吊装和运输、采取特殊减震措施等结构特点,从上机架、中机架、下机架、内托架、压板、两端防护等方面解析了装置的结构,详述了中子源输出器、探测器等主要装置部件的设计,指出采用中子活化瞬发γ分析(PGNAA)技术可对胶带流经的所有物料进行无接触在线检测,通过精确分析各元素含量及相关质量控制参数等实时检测信息以有效控制生产过程。各领域的中子活化元素在线分析仪可采用模块化设计,以符合不同应用领域、不同现场尺寸的结构要求。

This paper introduced the constitution, and structure characteristicsof on line analyzer for neutron activation element like there was small module structures internally, no cutting belt was needed, the channel height could be adjusted according to process, horizontal adjustment mechanism existed, integral hoisting and transportation were convenient and special shock- absorbing measurement was adopted; moreover, from aspects such as upper body frame, lower body frame, internal cradle, pressplate and protection at both ends, the structure of the equipment was analyzed. The design of maindevice components like neutron source and detector was demonstrated, it was indicated that usingPrompt Gamma Neutron Activation Analysis （PGNAA） could do the contactless online test for all the materials flowing through the belt, through accurate analysis of real time information like content of every element and relative quality control parameters, the production process was controlled effectively. On line analyzer forneutron activation element could adopt the modular design, so that the structure requirements of different application fields and different spot sizes could be met.