我国跨海大桥钢结构防腐保护与涂装

本文介绍了我国跨海大桥的建设情况及目前我国桥梁钢结构防腐现状,并着重介绍了跨海大桥钢结构用防腐涂料的种类及防腐性能方面的差异性。列举了我国目前主要跨海大桥钢结构防腐涂装配套体系。     

对渤海湾盆地张扭、压扭性构造的一点认识

张扭和压扭性构造是兼有走滑和拉张挤压2种作用的构造样式。经对大量具有张扭和压扭特征断层的统计提出,这2种扭动断层在沉积盆地的发育中具有特殊的空间位置与剖面特征,认为应当进一步加深对张扭和压扭断层的研究和认识,张扭和压扭构造是厘定渤海湾盆地及其内部坳陷演化过程的必需条件。     

左江水利枢纽安装间坝段结构计算

利用三维有限元法分析计算了左江水利枢纽安装间坝段的应力。计算表明用材料力学法计算结果误差太大，用板梁体系计算过于复杂，用三维有限元法成果可以大量节省钢筋，同时有些部位应力与材料力学计算的结果相反     

Research on atmospheric pollutant and greenhouse gas emission reductions of trucks by substituting fuel oil with green hydrogen: A case study

Trucks has caused serious atmospheric pollutant and greenhouse gas emissions in the Guangdong-Hong Kong-Macao Greater Bay Area (GBA), China, while substituting the truck fuel (gasoline/diesel) by green hydrogen is a critical way to solve the problems. Accordingly, we established a Hydrogen availability-Greenhouse gas and Atmospheric Pollutant emission reduction (HGAP) evaluation model. We revealed that the annual available green hydrogen energy in the GBA reached 1.36 × 10¹⁰ GJ, which could fuel all the trucks in the region. Via truck fuel substitution by hydrogen, a 45% reduction in regional greenhouse gas emissions in the GBA could achieve. The emission reductions of CO and HC by vehicles in the GBA achieved approximately 1/4, NOx was about 1/2 and PM was about 60%. We served a solution of developing without eco-sacrifice for developed, strategic yet high-emission coastal regions and countries.     

智能变电站间隔集群测控模式下的运维体系研究

以间隔层集群测控为代表的智能变电站新型监控技术的研究和实用化,亟需与之相匹配的、新模式下的集中式运维体系,以满足集中监控、高效维护和安全管理的目标。为此,以集群测控系统的特殊设备形态为背景,研制了一种基于集中运维理念的新型监控系统运维平台。系统阐述了新型运维平台的功能设计、架构设计和关键实现技术。研制的智能变电站集中运维平台采用了先进的通信技术,提升了间隔防误操作能力,可实现对智能变电站监控系统和新型集群测控装置的全景、可视化运维。工程现场的实际应用情况表明,所提出的集中运维体系和平台完全满足智能变电站新型监控系统下运维需求,为新型监控系统的推广奠定了基础。     

智能变电站二次设备整合及间隔层全下放方案研究

分析了国家电网公司不同标准之间关于智能变电站二次部分的主要技术差异点。结合工程试点情况和调研结果,针对有关二次设备整合的关键技术问题进行了分析和论证。根据研究结果,提出了户内变电站间隔层装置全下放的智能变电站解决方案。     

Low-Cost and Large-Scale Clean Steel Production Technology

As the market demand for clean steel increased,a number of new technologies for clean steel production have been developed in some domestic and foreign steelmaking plants.Based on the existing equipments and technical conditions in the No.1 steelmaking plant of Ansteel,a series of clean steel technologies have been integrated including single bay duplex-dephosphorization in steelmaking control technology,high efficiency desulfurization technology,the control technology for nitrogen content during the whole process,the control technology for hydrogen content in VD,and the systematic control technology for oxygen content.A series of process for all kinds of ultra-low phosphorus,ultra-low sulfur and relative low level of inclusions have been designed in clean steel production.This process include hot metal desulfurization and slag-off,single bay duplex-dephosphorization in BOF,molten steel slag-off,LF processing,VD processing,and continuous casting with protection,then a stable,low-cost and large-scale production process has been formed.Applying this integrative technology,the sum of 5 major elements including phosphorus,sulfur,oxygen,nitrogen,hydrogen is less than 80×10-6 in high alloy steel scale production,and the industrial applications for clean steel technology have been achieved.     

智能变电站中过程层和间隔层功能一体化IED的设计

常规变电站的智能化改造需要增加过程层设备并改造间隔层设备,施工复杂,对中低电压等级间隔经济性欠佳。提出了采用过程层和间隔层功能一体化智能电子设备（IED）的分散安装配置方案,并设计了功能一体化的新型IED,将合并单元、智能终端功能和测控、保护功能在一台物理设备中实现。介绍了该IED的总体设计方案和软硬件结构,主要由Po...     

多核处理器在智能间隔装置中的应用探讨

在智能间隔装置中提高系统的主频,装置的发热与成本会急剧地增加,但性能并不会成倍地提高。阐述了在智能间隔装置中使用多核处理器其硬件及软件上的优越性。通过一个应用实例,分析了多核装置的内核引导顺序及引导方式,解析了内核间内存分配模式,剖析了多核的中断处理方式、多核操作的软件可靠性和数据安全性,并详细说明了智能间隔装置中内核间任务分解的方式。相对于单核处理器而言,在智能间隔设备中使用多核处理器,通过合理的任务分解和中断向量的分配,会极大地提高系统的运算速度,但系统的发热及功耗相对增加很少,可以大大提高设备的性能     

莱州湾凹陷垦利6-A构造深部储层成岩作用研究

莱州湾凹陷东北次洼是渤海海域重要的油气富集区,通过对大量岩石薄片、扫描电镜以及储层物性数据进行分析,对垦利6-A构造深层砂岩储层的成岩作用和孔隙演化进行了详细研究。结果表明,该区深部储层在埋藏过程中经历了压实、胶结、溶解等多种成岩作用,根据镜质体反射率、粘土矿物演化分析等将该区成岩阶段划分为早成岩A期,早成岩B期,中成岩A期,中成岩B期四个阶段,并对各期孔隙演化特征进行了分析。