裂变靶辐照装置水力特性试验技术

Technical Scheme for Test of Hydraulic Characteristics of Fission Target Irradiation Facility

针对裂变靶辐照装置内外流道尺寸狭小的结构特点及实堆测量需求,提出了进行裂变靶辐照装置水力特性试验的技术方案,采用微小压力传感器实测狭窄套管内外流道的流动压差,通过单项标定试验获得内外流道压差-流量关系拟合公式。由该拟合公式得到的计算值与内外管实测流量的相对误差最大不超过±2%,可以用于裂变靶辐照装置在实堆中进行水力模拟的试验数据处理。

Considering the flow distribution test requirement of limited flow channel in fission target irradiation facility in nuclear reactors, the technical scheme for test of hydraulic characteristics for the facility is proposed in this paper. A subminiature pressure transducer is adopted to measure the flow pressure drop in canular channel. Additional demarcated experiment has been performed to achieve the relation between pressure drop and flow rate. The maximum of relative error of test and calculated value is less than ±2%. The relation between pressure drop and flow rate can be used in the research on the hydraulic characteristics of fission target irradiation facility in nuclear reactors.