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    • 8. 发明授权
    • Fault diagnosis and preliminary location system and method for transformer core looseness
    • 变压器铁芯松动故障诊断及初步定位系统及方法
    • US09404957B2
    • 2016-08-02
    • US14128603
    • 2012-07-19
    • Kai ChenChunning WangHongzhong MaKai LiYiming WuYing ZhangHongtao LiuPeng GaoTaotao Chen
    • Kai ChenChunning WangHongzhong MaKai LiYiming WuYing ZhangHongtao LiuPeng GaoTaotao Chen
    • G01R31/02G01H1/00
    • G01R31/027G01H1/00
    • This invention publishes a fault diagnosis and location system for transformer core looseness, consists of vibration sensors, data collection and computer. It is of power transformer fault intelligent diagnosis technology technical field. Fault diagnosis and location method uses three vibration sensors positioned on the top of transformer tank, to obtain vibration signal, uses signal processing to analyze the signal, and obtains fault characteristics of the transformer core looseness. The characteristics respectively are 50 Hz, 150 Hz and 300 Hz frequency components, in which 300 Hz is main feature. When they reach a certain value at one position, it suggests that transformer core looseness near this position. By the comparison of differences among signals of three positions, fault location can be done. This invention manifests fault characteristics accurately and detects core looseness efficiently.The invention uses the electricity grid frequency of 50 Hz for example, for 60 Hz power system, above 50 Hz, 150 Hz, 300 Hz characteristic frequencies are 60 Hz, 180 Hz and 360 Hz.
    • 本发明公布了变压器磁芯松动故障诊断定位系统,由振动传感器,数据采集和计算机组成。 是电力变压器故障智能诊断技术技术领域。 故障诊断和定位方法采用位于变压器箱顶部的三个振动传感器,获得振动信号,采用信号处理分析信号,获得变压器磁芯松动的故障特征。 特性分别为50Hz,150Hz和300Hz频率分量,其中300Hz为主要特征。 当它们在一个位置达到一定值时,表明变压器芯在这个位置附近松动。 通过比较三个位置的信号之间的差异,可以进行故障定位。 本发明精确表现了故障特征,有效地检测了磁芯的松动。 本发明使用例如50Hz的电网频率,对于60Hz电力系统,高于50Hz,150Hz,300Hz特征频率为60Hz,180Hz和360Hz。
    • 9. 发明授权
    • Liquid crystal display screen having carbon nanotubes
    • 具有碳纳米管的液晶显示屏
    • US09235089B2
    • 2016-01-12
    • US12313393
    • 2008-11-20
    • Wei-Qi FuLiang LiuKai-Li JiangShou-Shan Fan
    • Wei-Qi FuLiang LiuKai-Li JiangShou-Shan Fan
    • G02F1/1343B82Y20/00G02F1/1337
    • G02F1/13439B82Y20/00G02F1/133711G02F2001/133765G02F2001/133796G02F2202/36Y10T428/1005
    • A liquid crystal display screen includes a first substrate, a first alignment layer, a liquid crystal layer, a second alignment layer, and a second substrate opposite to the first substrate. The liquid crystal layer is sandwiched between the first substrate and the second substrate. The first alignment layer and the second alignment layer are respectively disposed on the first substrate and the second substrate, and face the liquid crystal layer. The first alignment layer and the second alignment layer respectively include a plurality of parallel first grooves and second grooves perpendicular to the first grooves formed thereon facing the liquid crystal layer. Furthermore, at least one of the alignment layers includes a carbon nanotube layer and a fixing layer disposed thereon facing the liquid crystal layer. The carbon nanotube layer includes at least one carbon nanotube film pulled out from an array of carbon nanotubes.
    • 液晶显示屏包括第一基板,第一取向层,液晶层,第二取向层和与第一基板相对的第二基板。 液晶层夹在第一基板和第二基板之间。 第一取向层和第二取向层分别设置在第一基板和第二基板上,并且面向液晶层。 第一配向层和第二取向层分别包括多个平行的第一槽和垂直于其上形成的面向液晶层的第一槽的第二槽。 此外,至少一个取向层包括碳纳米管层和面向液晶层的固定层。 碳纳米管层包括从碳纳米管阵列拉出的至少一个碳纳米管膜。