爆磁压缩装置经组合功率调节系统产生高电压的实验研究

 介绍了以爆磁压缩装置为脉冲功率能源,经变压器和爆炸金属丝断路开关组合功率调节系统,在电阻负载上产生高电压的实验研究。实验结果为：在100W 水电阻负载两端得到了约800kV的高电压脉冲,脉宽约100ns。此项工作拓宽了爆磁压缩装置的应用范围。     

动态预浓缩法富集变压器油中溶解的C2烃

利用动态预浓缩方法对溶解在变压器油中的乙炔、乙烯和乙烷进行了富集,在１０ｍＬ顶空气体的进样量下得到了１００倍的富集效果,因此可以用热导检测器替代氢火焰离子化检测器,使在线检测成为可能,通过比较溶解气体从变压器油中脱出的方法发现,超声振荡比机械振荡的脱气效率提高几十至上百倍。     

磁脉冲压缩器用脉冲变压器的设计

本文简要说明了磁脉冲压缩器的工作原理。着重介绍了其输入、输出脉冲变压器的等效回路设计法。并将该方法用于实例进行验证。结果说明,这种设计方法是非常成功的,而且可以推广到一般情况下的脉冲变压器的设计。     

母线含非圆曲线的超声变幅杆精确加工的研究

介绍在普通数控车床上准确加工母线含非圆曲线的超声变幅杆的两种通用程序的编制方法及应用。方法一以等弦长划分待加工曲线决定节点,以平均曲率半径作为插补圆半径,以C语言编制出加工代码生成软件。方法二采用VB6编程,使用双圆弧法进行插补,伸缩步长法进行误差控制和决定节点,可设定并控制插补误差理论值,运行时生成的NC代码指令条数少,适应任何超声变幅杆的加工,界面友好易用。上述两程序在进行切削加工前,均可全程模拟加工过程。两软件经分别在GSK-928和G-CNC6135A(G)数控车床上应用,效果良好。而第一软件较完善。     

高速超声加工工具的研究与应用

本文将提供一种设计高速超声加工工具的新方法，并给出了高速超声加工工具的试验结果。     

Tesla变压器型电子束加速器初步实验

 介绍了一种Tesla变压器型的强流电子束加速器。当变压器初级输入20kV左右的电压时，加速器二极管输出电压500kV，电流9kA，信号脉宽大约50ns，该装置具有结构简单，安装方便，运行可靠等特点。     

鱼翅中硫酸软骨素的酶解-高效液相色谱法测定

建立了一种测定鱼翅中硫酸软骨素的酶解－高效液相色谱方法；该法利用在一定条件下硫酸软骨素能被硫酸软骨素酶ABC定量酶解成软骨素二糖，通过高效液相色谱法测定软骨素二糖的量来计算硫酸软骨素的含量。     

用气相色谱仪测定变压器油中气体

本文采用多柱自动切换气相色谱仪和真空全脱气装置对变压器和互感器用油中的气体进行了系统的分析，除可测定油中的氢、甲烷、乙炔、乙烯、乙烷、二氧化碳和一氧化碳等气体外，还可根据不同需要测定氮、氧以及Ｃ３和Ｃ４烃的含量。本方法已用于诊断变压器和互感器内部变化及故障。     

Graded PZT ceramics for piezoelectric transformers

In the present study two types of the synthesized Pb(Zr_1−xTi_x)O₃ (PZT) powders differing in Zr/Ti ratio were used to prepare the spatially inhomogeneous (i.e., graded) structure. A position-dependent chemical composition was expected to cause the property gradient. Disk-shaped compacts were prepared in a way such that two different orientations of the radial gradients were formed. The solid state sintering under pressure was utilized to prepare ceramics. Simultaneous thermal analysis was used to study thermal behavior of the ceramic powders. Graded PZT ceramics were characterized using X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. It was also characterized in terms of its dielectric properties by both bridge technique and the impedance spectroscopy. On the basis of graded PZT ceramics the disk-shaped radial mode piezoelectric transformer was developed and fabricated.     

Investigation and optimization of the recovery of coal fines using oil agglomeration process: Use of waste oils from different sectors

The high cost of the bridging liquid subdues the implementation and commercialization of oil agglomeration process. To overcome this problem, waste oils from different sectors were used in this present study. The performance of the process was assessed based on the responses like ash rejection and organic matter recovery. The aim of the present study was to investigate the usage of waste oils from different sectors and to optimize and analyze the behavioral pattern showcased by different variables (pulp density, oil dosage, agglomeration time and oil type) using response surface methodology (Box-Behnken design). Experimental investigation shows that the optimum pulp density, oil dosage, agglomeration time and oil type condition obtained as 3%, 15%, 15?min and waste engine oil, respectively. At optimum condition, the % ash rejection and % organic matter recovery obtained as 63.94% and 81.8%, respectively.