云边协同体系下水电厂统一数据平台研究与应用

以大型发电集团数字化转型为应用背景,文章提出发电集团云边协同体系架构,并结合数字水电厂智能辅助决策、人机协同等需求,研究和设计云边协同体系下数字水电厂统一数据平台,详细阐述虚拟化、数据中心、基础服务等内容,同时结合具体应用实例探讨了云边协同体系下水电厂统一数据平台与业务应用的关系.所提的统一数据平台技术架构适用于发电集...     

基于模糊综合评判的水轮发电机健康状态在线评价方法

针对水轮发电机在线监测参数多、参数间关联不确定和模糊、难以评价设备整体健康状态的问题,提出基于模糊综合评判的水轮发电机组健康状态在线评价方法,通过合理选择状态监测信息,分部件建立水轮发电机健康状态评价层次指标体系,统一确定各个指标评价状态的隶属函数,按照模糊综合评判方法对各层指标进行评价及逐层融合,得出水轮发电机的综合运行健康状态。实例应用结果表明,该方法合理、可行,其评价结果与实际情况相符。     

附着式电动施工平台的工程应用——长青大厦98米高空顶部采光棚桁架平台设计与施工

一、工程概况及编制依据(1)工程概况及工程施工要求工程概况:长青大厦位于北京燕莎。本工程主体为框架剪力墙结构,5-19层为标准层,标准层层高均为3.3m,1层6.9m、2-4层4.5m、20-23层3.8m。建筑总标高均为98.1m。施工单位:中建一局第三建筑工程公司施工要求:建筑中央大厅从第五层一直到顶部是14.9米×21米的高空天井,     

活性炭从硫脲溶液吸附金的等温线

测定了20,30,40℃条件下活性炭从硫脲原始溶液吸附金的等温线,应用气相吸附的Langmuir方程和Clausius-Clapeyron方程分别计算了饱和吸附量和吸附热。结果表明:(1)在20,30,40℃金的饱和吸附量分别是6.00,9.17,15.4mmol/g,随温度升高而增加;(2)吸附热随活性炭覆盖率增加呈对数关系下降,起始微分吸附热和积分吸附热分别为-9.82和-9.61kJ/mol;(3)被吸附的络离子主要是Au[CS(NH_2_2]~+和Au[CS(NH_2)_2]_2~+,本体系具有化学吸附的性质。     

Manufacturing cost optimization and estimation combined computer of composite-stiffened panels

The primary goal of this study is to fully grasp the production flow of the new processing technologies for manufacturing composite stiffened panels incorporating cost as one of the design variables early in the design process. An approach is presented to determine the optimum process for cost as objective function. A cost estimation model is established based on the integrally molding process. In the model,the cost drivers which are related to the manufacture processes in terms of material,labor,tool and equipment costs are taken into account. At the same time,estimation software combined computer is developed to aid optimization design. A case of manufacturing composite stiffened panels with T-shaped stiffeners is examined. Excellent agreement shows the optimum process for cost is obtained for the composite stiffened panel with cocuring. It is also revealed that the estimation software combined computer is efficient. The estimation methodology is valid to guide design of the manufacturing process for the composite-stiffened panel.     

Optimum design of carbon/carbon ablative property based on genetic algorithm

An optimum design model has been proposed for carbon/carbon ablative property based on genetic algorithm,in which the optimum parameters are the number of woven satins,K of fiber bundles,layers per unit height,the average distance of puncture fibers in Z direction and Ply Stacking angle,and the constraint conditions are the density and diameter of carbon fibers and the density of carbon matrix.The results demonstrate that after optimization,the overall height of the ablative carbon/carbon surface is reduced by 56.5%,the standard deviation is reduced by 34.9% and the surface roughness is reduced by 12.6%,which suggests the remarkable improvement of ablative homogeneity.The present investigation can provide practical methodology for the optimum design of carbon/carbon ablative property and the development of new carbon/carbon composites.     

金属离子对活性炭自硫脲溶液吸附金的影响

在30℃、pH2条件下研究了精金矿中7种杂质金属离子铁、钙、钢,锌,铝、镁和铅对活性炭从硫(?)溶液吸附金时在吸附等温线和吸附速度方面的影响。文中比较了各种离子对吸附影响的大小,提出了影响原因,并以实验结果证实了上述离子基本不被吸附。     

宽温域无氧环境下热电器件性能实验及仿真

针对热电器件在高温无氧环境下的应用特点,对方钴矿/碲化铋两级热电器件的热电转换效率进行实验测试。采用石英灯辐射加热和强制水冷散热的方式提供稳定的宽温域条件,全程不断注入氩气的方式制造无氧环境,设计测试电路利用伏安法获得该器件的热电输出性能。根据热电转换原理推导出热、电物理场的耦合控制方程,并通过数值方法对实验过程中的传热及热电转换进行模拟。对比分析发现实验装置中不同组件之间存在的接触热阻直接影响了热电器件上下表面的温差,从而影响了热电器件的发电效率,为热电器件在宽温域无氧环境下的应用奠定实验及理论基础。