9 research outputs found

    具有曲面适应能力的滚动吸附爬壁机器人

    No full text
    本实用新型属于爬壁机器人领域,具体地说是一种具有曲面适应能力的滚动吸附爬壁机器人,包括负压产生装置、检测装置、驱动装置、机器人底座与滚动密封机构,负压产生装置、检测装置、驱动装置与滚动密封机构分别安装于机器人底座上。驱动装置带动爬壁机器人整体进行移动,检测装置在爬壁机器人移动的同时检测周围壁面环境情况;滚动密封机构的下表面贴附于壁面,负压产生装置与滚动密封机构相配合,并使滚动密封机构内部空间产生负压,进而使爬壁机器人吸附在壁面上。本实用新型可代替人工进行曲面壁面攀爬和检查维护,并可搭载作业工具代替人工作业,不但减轻作业人员劳动强度,提高工作效率,同时减少危险,保障作业人员人身安全

    光传送网络同步测试方法研究

    No full text
    随着光传送网络/分组增强型光传送网络(OTN/POTN)技术的规模部署应用,OTN/POTN必然要面临承载频率和时间同步信号的问题。文章提出一种基于1588+SyncE同步的现网测试方法,通过在源端OTN/POTN设备上配置额外的光监控信道板卡和时钟接口板,并采用逐点方式对同步信号进行本地环回测试,该方案解决了异地测试基准带来的测量误差问题,同时摆脱了测试源头和测试参考点的限制,可以根据实际需要在OTN/POTN系统的任一节点进行测试,降低了测试成本

    软件定义光传送网控制器测试方法研究

    No full text
    软件定义光传送网采用集中式的控制器进行网络控制,控制器的性能及其测试方法是判断其是否存在性能"瓶颈"的重要手段。文章对评测控制器性能"瓶颈"的性能指标进行了分析,在此基础上,提出了一种针对控制器长期运行性能指标的测试方法,采用此方法可对控制器长期运行的稳定性、可靠性及性能进行综合评判

    光克尔门选通分幅相机

    No full text
    本实用新型涉及光克尔门选通分幅相机,用于克服目前分幅相机及成像方法中电脉冲选通不够快的缺点。包括依次设置于被测物发出的信号光所在光路上的第一偏振器、光克尔介质、第二偏振器、图像采集单元,所述光克尔介质的入射面或出射面一侧还设有小孔阵列,第二偏振器与第一偏振器的透射偏振方向互相垂直,光克尔介质的泵浦光为多路具有确定延时的脉冲激光,泵浦光的路数与小孔阵列的行数相等,每个小孔和脉冲激光选通所经过的位置对准,信号光、泵浦光、图像采集单元同步。本实用新型可实现皮秒至飞秒量级的高速选通门,实现红外、可见、紫外波段的高时间分辨率

    Fuel Cells Reactor for Chemicals and Electric Energy Cogeneration

    No full text
    燃料电池作为能源转换装置能够高效地将化学能转化为电能,随着技术的发展人们将其作为反应器来完成高附加值的化学品的合成,同时产生一定的电能. 燃料电池反应器因具有反应条件温和、反应过程可控、产物选择性高、能源利用效率高等特点,而被广泛地应用于医药中间体的制备、气体分离、水处理等多个领域. 本文首先按照反应器中阴阳极区域发生反应的类型进行分类,介绍燃料电池反应器在化学品与电能联产中的研究现状和研究进展. 随后描述了燃料电池反应器中存在的问题,并依照催化剂、反应过程等方向对解决方案进行探讨. 最后,对几种新型燃料电池反应器的研究进行了简要的介绍并对其发展做出了展望.As an energy conversion device, fuel cells can efficiently convert chemical energy into electrical energy. With the developing of technology, it is used as a reactor to conduct the synthesis of high value-added chemicals while generating electrical energy. Having benefits such as mild reaction conditions, controllability of the reaction process, high selectivity of the product, as well as high efficiency of energy utilization, it is widely used in many fields such as preparation of high value-added industrial products, gas separation, water treatment, etc. This paper introduces the current trends and statuses of fuel cell reactors in the cogeneration of chemicals and electric energy according to the reduction reaction at the cathode and the oxidation reaction of the anode. The problems related to the fuel cell reactor are described, and possible solutions are discussed in terms of the catalyst research, process research and others. Finally, the research in several new fuel cell reactors is briefly introduced and its development is prospected.国家自然科学基金(No. 21875138)资助作者联系地址:1. 上海交通大学化学工程系 上海电化学能源器件工程技术研究中心,上海 200240; 2. Energy, Mining and Environment Research Center, National Research Council Canada, 4250 Wesbrook Mall, Vancouver, BC, V6T1W5, CanadaAuthor's Address: 1. Shanghai Electrochemical Energy Devices Research Center, Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China; 2. Energy, Mining and Environment Research Center,National Research Council Canada, 4250 Wesbrook Mall, Vancouver, BC, V6T1W5, Canada通讯作者E-mail:[email protected]

    The Effect of Cross-Linking Agent on the Preparation of the Thermally Expandable Microspheres

    No full text
    以丙烯腈为主要单体,以氢氧化镁为无机分散剂,采用常压聚合法,制备了膨胀倍率达到20-30倍的可膨胀小球。系统研究了二丙二醇二丙烯酸酯(dPgdA)、三缩丙二醇二丙烯酸酯(TPgdA)、新戊二醇二丙烯酸酯(nPgdA)、三羟甲基丙烷三丙烯酸酯(TMPTA)和二乙烯基苯(dVb)等5种交联单体对可膨胀小球制备的影响。通过扫描电子显微镜、热重分析、交联密度测定等手段研究了可膨胀小球的形貌、粒径、发泡剂的含量、交联密度、发泡倍率。确定dPgdA为最佳的交联剂种类,用量为1.7%。采用dPgdA作为交联剂的小球既具有较完好的球状形貌,又有较小的粒径,较高的发泡剂含量和较高的交联度,膨胀倍率可达30倍。The thermally expandable microspheres,using acrylonitrile as the main monomer and magnesium hydroxide as the inorganic dispersant,were prepared with atmospheric suspension polymerization.This study systematically researched the effect of cross-linking agent such as dipropylene glycol diacrylate(DPGDA),tripropylene glycol diacrylate(TPGDA),trimethylolpropane trimethacrylate(TMPTA), noe ponlyl glycol di acrylate(NPGDA)and divinylbenzene(DVB)on the preparation of the thermally expandable microspheres.By using scanning electron microscope,thermogravimetric analysis and determination of cross-linking density,the morphology,particle size,foaming agent content,cross-linking density and foaming ratio of thermally expandable microspheres were studied.As a result,DPGDA is found to be the most suitable cross-linking agent because the microspheres prepared with it have the perfect surface morphology,small particle size,high blowing agent content and high cross-linking degree and the dosage is 1.7%
    corecore