降压变电站电抗器烧毁原因分析及改进措施

对太钢降压变电站烧毁限流电抗器事故原因进行了技术理论分析,采取改进电抗器与断路器接线方式的措施,消除了系统隐患。     

先进空间快堆运行特性和启动特性

针对先进空间快堆RAPID（refuelledbyallpinsintegrateddesign）-L(Lunar)建立瞬态分析模型，描述其运行特性和启动过程。计算表明RAPID-L具有下列特点：反应堆的换料周期可达10a；能够通过流量变化调节功率；在锂释放模块LRM和锂膨胀模块LEM的共同作用下自动完成启动。因此，RAPID-L运行寿期长，可完全脱离操纵员的操作而实现自动运行，满足空间运行的要求。      

田湾核电厂数字化反应堆保护系统故障模式与后果分析

从田湾核电厂数字化反应堆保护系统的结构出发，对数字化保护系统可能出现的故障种类、影响区域和故障后果等进行了详细分析,通过故障模式与后果分析（FMEA）方法，对田湾核电厂数字化反应堆保护系统是否存在设计薄弱环节作出了判断。本工作为国内数字化反应堆保护系统设计提供了一些新思路。     

Inter-subassembly heat transfer of sodium cooled fast reactors: Validation of the NETFLOW code

This paper describes the prediction of temperature at the exit of subassemblies of a sodium cooled fast reactor using the NETFLOW code. Until present time, this plant dynamics calculation code is expected as a tool of nuclear education, and has been validated using data obtained at facilities or reactors cooled with water or sodium. A natural circulation test was conducted in the experimental fast reactor ‘Joyo’ with a 100 MW irradiation core. Also a turbine trip test was conducted in the prototype fast breeder reactor ‘Monju’. These tests were chosen to validate a model to calculate inter-subassembly heat transfer consisting of heat conduction and heat transfer by inter-wrapper flow. Based on the calculation for the natural circulation test in primary and secondary loops of ‘Joyo’, the model to calculate the heat transfer in radial direction of the inter-subassemblies simulated reasonable sodium temperature behaviors at the exit of subassemblies. Good agreement was also obtained in prediction of temperatures at the exit of the ‘Monju’ subassemblies. Through these validations, it was shown that the one-dimensional plant dynamics code NETFLOW could trace temperatures at the exit of the subassemblies of fast reactors with the inter-subassembly heat transfer model.     

300#反应堆瞬发中子衰减常数测量

利用反应堆噪声分析技术测量300^#池式研究堆缓发临界下的瞬发中子衰减常数。堆芯采用低富集度U燃料装载，燃料元件带一定燃耗。利用紧靠堆芯布置的两个中子探测器，信号经测量系统和相关软件得到互谱密度，用非线性最小二乘法拟合得到瞬发中子衰减常数。在4kW功率水平测得缓发临界下的瞬发中子衰减常数α_c=(83.4±0.7)s^.-1。     

无限大芯部热容板翅式回热器动态性能研究

针对高温气冷堆直接氦气透平循环中的板翅式回热器，研究提出一仅考虑回热器芯部热容的集总参数模型，即无限大芯部热容的集总参数模型，并利用四阶龙格 库塔方法求解该模型，求解过程中考虑温度对气体物性的影响。利用该模型，分析了在入口温度、流量阶跃和斜坡扰动下回热器出口温度的响应过程。在此基础上，分析了高温气冷堆直接氦气透平循环中的功率调节过程及透平甩负荷过程时回热器出口温度和芯部温度的响应过程。     

Preparation of New Fibers on the Basis of Codeine Imprinted Polymer

A monolithic copolymer of methacrylic acid-ethylene glycol dimathacrylate as a fiber with 2 cm length and 0.3 mm diameter, containing codeine (CO) template was prepared through thermal radical co-polymerization procedure. This fiber is a robust recognition material capable of mimicking natural systems, combined with solid-phase micro-extraction (SPME) and gas chromatography/mass spectrometry for the extraction of trace CO from various street-drug samples. Effective experimental parameters such as Methacrylic Acid (MAA), Ethylene glycol dimethacrylate (EDMA), and CO proportions, nature, and dimension of mold, copolymerization time and temperature were optimized. Experimental studies such as scanning electron microscopy (SEM) reveal that highly homogenate fiber was achieved that can preciously be used for the above mentioned goals.     

反应堆用磁致伸缩材料设计

简要介绍了磁致伸缩现象及几类常见的磁致伸缩材料,并对反应堆用磁致伸缩材料做了详尽的设计;特别是对磁致伸缩材料的抗辐照性能、磁致伸缩性能及高温性能做了详尽地分析.     

充电整流器所产生的高次谐波的分析与抑制措施

讨论了蓄电池充电整流器所产生的高次谐波及其抑制措施。从理论上推算出各高次谐波对电网的危害程度,从而找到解决问题的方法。分析结果表明,使用谐波滤波电容器组可有效抑制充电整流器产生的高次谐波。     

110～500 kV变电站变压器/高压并联电抗器典型规范应用说明

文章对变压器/高压并联电抗器的主要厂商制造情况、各电压等级的变压器/高压并联电抗器的设备特点及运行情况做了介绍,结合通用设备典型规范对变压器/高压并联电抗器的设备选型以及设备厂家应如何应对该典型规范作了阐述。