供热堆格架力学性能试验研究  

Experimental Study of Mechanical Properties on Spacer in NHR

作　　者：蒋跃元[1] 施继斌[1] 徐勇[1] 

机构地区：[1]清华大学核能技术设计研究院,北京100084

出　　处：《核动力工程》2007年第1期22-25,31,共5页Nuclear Power Engineering

摘　　要：200MW供热堆定位格架主要由条带,围带和角部片簧组成。其141个栅格排列成12×12-3的缺一角的准正方形结构形式。论述了燃料组件工作时,格架三弯弹簧的预变形范围及其夹持力大小。在特制的加力试验台上采用电阻应变计测量载荷与数字式位移计测量变形的方法对1:1的全尺寸定位格架进行了一系列力学性能试验,包括3种三弯弹簧及刚性支撑的载荷-变形试验,格架整体强度与刚度试验。结论表明:供热堆定位格架的力学性能完全满足200MW供热堆燃料组件的设计要求。The spacer of NHR-200 is composed mainly of the inner, outer and cornual strips which are ranged in egg-crate of 12× 12-3. First, the pre-distortion of three kinds of three-arc springs on reactor working condition and their related clipping-force ranges are analyzed in this paper. Secondly, the mechanical experi- ments of 1：1 prototype, such as the load-distortion experiments, which the load and distortion are respectively measured by strain gauge and displacement sensor, of three kinds of springs, rigid supports and the spacers in two different directions are carried out on a special experimental facility. The experimental results show that the spacer can completely meet the design demands of mechanical properties of the fuel assemblies in NHR-200.

关 键 词：供热堆 燃料组件 定位格架 

分 类 号：TL341[核科学技术—核技术及应用] TL352