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    • 2. 发明专利
    • Method of measuring surface pressure of interface between cable insulator and rubber block
    • 测量电缆绝缘子与橡胶块之间接口表面压力的方法
    • JP2011141212A
    • 2011-07-21
    • JP2010002413
    • 2010-01-08
    • Tokyo Electric Power Co Inc:TheViscas Corp東京電力株式会社株式会社ビスキャス
    • HORIGUCHI NORIAKIKOBAYASHI SHOZOITO HIROKINAKADE MASAHIKOHYODO TOSHIAKIUMEKAWA KENJI
    • G01L5/00
    • PROBLEM TO BE SOLVED: To provide a method of measuring a surface pressure in which a case of going into a measurement incapable condition hardly occurs in a case where measuring of the surface pressure of an interface between a cable insulator and a rubber block is performed for a long time period.
      SOLUTION: A rigid holder 6 is used that has a support 6a supporting a surface at the opposite side of the pressure receiving surface 4a of a surface pressure sensor 4, a frame 6b surrounding the periphery of the surface pressure sensor 4 and a housing 6c accommodating a lead wire 5 of the surface pressure sensor 4. The surface pressure sensor 4 is fitted into a recess formed by the support 6a and the frame 6b of the holder 6 so as to be held thereby, and the lead wire 5 in the vicinity of the surface pressure sensor 4 is accommodated in the housing 6c by giving slack to the lead wire 5. The holder 6 having the surface pressure sensor 4 and the lead wire 5 built therein is fitted into a recess 1a formed at a part of the outer peripheral face of the cable insulator 1, and the rubber block 2 is covered thereon, and then a surface pressure of the interface 3 between the cable insulator 1 and the rubber block 2 is measured.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种测量表面压力的方法,其中在电缆绝缘体和橡胶块之间的界面的表面压力的测量情况下几乎不发生测量不能发生的情况 执行了很长时间。 解决方案:使用刚性保持器6,其具有支撑件6a,其支撑表面压力传感器4的压力接收表面4a的相对侧的表面,围绕表面压力传感器4的周边的框架6b和 壳体6c容纳表面压力传感器4的引线5.表面压力传感器4装配到由支撑件6a和保持器6的框架6b形成的凹部中以被保持,并且引线5在 表面压力传感器4的附近通过给导线5松弛地容纳在壳体6c中。内置有表面压力传感器4和引线5的保持器6装配在形成在 电缆绝缘体1的外周面和橡胶块2被覆盖,然后测量电缆绝缘体1和橡胶块2之间的界面3的表面压力。 版权所有(C)2011,JPO&INPIT
    • 3. 发明专利
    • Method for analyzing ions in water tree
    • 分析水中离子的方法
    • JP2009042160A
    • 2009-02-26
    • JP2007209518
    • 2007-08-10
    • Tokyo Densetsu Service KkTokyo Electric Power Co Inc:The東京電力株式会社東京電設サービス株式会社
    • FUJITA MANABUNAKADE MASAHIKOFUJIMURA YOSHINORISUGIMOTO OSAMU
    • G01R31/12G01N21/35
    • PROBLEM TO BE SOLVED: To provide a method for analyzing ions in a water tree, capable of specifying ion species and distribution status thereof in a water tree of an insulator of a power cable, even under the condition that the tree be buried in the insulator and measuring them easily and accurately. SOLUTION: The method for analyzing ions comprises the steps of measuring an infrared absorption spectrum in a portion with a water tree and in a portion without water tree, after removing moisture in the water tree by slicing the insulator of the power cable and vacuum-drying the insulator sliced, and specifying the ion species in the water tree, by comparing a different spectrum with a standard spectrum, which is determined by subtracting the portion with no water tree from the portion with the water tree. Also, the method includes the steps of measuring infrared absorption spectrum in the region surrounding the water tree, after removing the moisture in the water tree by vacuum-drying the insulator, and measuring the distribution status of electrolyte with mapping the absorbance in a definite infrared absorption band which the electrolyte in the water tree. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种分析水树中的离子的方法,即使在树被掩埋的条件下,能够在电力电缆的绝缘子的水树中指定离子种类和分布状态 在绝缘体中并且容易且准确地测量它们。 解决方案:离子分析方法包括以下步骤:在通过切割电力电缆的绝缘体去除水树中的水分之后,用水树和部分无水树测量部分中的红外吸收光谱,以及 对绝缘子进行真空干燥,并通过将不同的光谱与标准光谱进行比较来确定水树中的离子种类,通过从水树的部分中减去没有水树的部分来确定。 此外,该方法包括以下步骤:在通过真空干燥绝缘体去除水树中的水分后,测量水树周围区域的红外吸收光谱,并测定电解液的分布状态,将吸光度映射到确定的红外 水中电解质的吸收带。 版权所有(C)2009,JPO&INPIT
    • 5. 发明专利
    • Method and instrument for measuring physical quantity parameter, and sensor support device used therefor
    • 用于测量物理参数的方法和仪器及其使用的传感器支持装置
    • JP2004301829A
    • 2004-10-28
    • JP2004065542
    • 2004-03-09
    • Tokyo Electric Power Co Inc:The東京電力株式会社
    • SAITO TAKASHINAKADE MASAHIKOKUNII KUMIKO
    • G01N25/18
    • PROBLEM TO BE SOLVED: To provide a method and an instrument for measuring a physical quantity parameter of a soil executed easily in a site, and capable of estimating precisely a temperature change characteristic, and a sensor support device used therefor.
      SOLUTION: A heat source of a known heating value is laid into the soil in a measuring objective place, a temperature of the heat source is measured, a heat resistance g of the soil is calculated based on a time-serial change of the heat source temperature and the heat source heating value W, a soil temperature is measured in a measuring portion P in a proper distance from the heat source, a K-value, that is a reciprocal of a product of the soil heat resistance g and a specific heat capacity α, is calculated based on a variation ΔT of the soil temperature, the soil heat resistance g, the heat source heating value W and the distance R, and the specific heat capacity α is calculated based on the K-value and the soil heat resistance.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种用于测量在现场容易地执行并且能够精确估计温度变化特性的土壤的物理量参数的测量方法和仪器,以及用于其的传感器支撑装置。 解决方案:将已知加热值的热源放置在测量目标位置的土壤中,测量热源的温度,根据时间序列变化计算土壤的耐热性g 热源温度和热源加热值W,土壤温度在与热源适当距离的测量部分P中测量,K值是土壤耐热性g和 基于土壤温度,土壤耐热性g,热源热值W和距离R的变化ΔT计算比热容α,并根据K值和K值计算比热容α, 土壤耐热性。 版权所有(C)2005,JPO&NCIPI
    • 6. 发明专利
    • Cooling device and method of underground transmission cable
    • 冷却装置和地下传输电缆的方法
    • JP2008252991A
    • 2008-10-16
    • JP2007088260
    • 2007-03-29
    • Tokyo Electric Power Co Inc:The東京電力株式会社
    • KOBAYASHI YASUYUKINAKADE MASAHIKO
    • H02G9/00H02G9/08
    • PROBLEM TO BE SOLVED: To provide cooling device and method of underground transmission cable which can cool a cable laid in tunnel sufficiently by a system for taking ambient heat by directly dripping water to the cable laid in underground tunnel, thereby evaporating water in the tunnel, and can construct the whole facility inexpensively without requiring special time and effort for maintenance of the facility. SOLUTION: The cooling device of underground transmission cable comprises piping arranged above and along a cable laid in underground tunnel, and a pump for feeding water to the piping wherein a plurality of overflow holes are provided in the upper portion of the piping along the longitudinal direction and water from the overflow holes is dripped to the cable. The cooling method of underground transmission cable comprises a step for arranging piping with a plurality of overflow holes provided at the upper portion thereof along the longitudinal direction along a cable laid in underground tunnel, a step for feeding water to the piping by using a pump, and a step for dripping water from the overflow holes to the cable. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种地下传输电缆的冷却装置和方法,其可以通过直接将水滴入地下隧道中的电缆,通过一个系统充分地冷却隧道中的电缆,从而蒸发水 隧道,并且可以廉价地构建整个设施,而不需要特别的时间和精力来维护设施。

      解决方案:地下传输电缆的冷却装置包括布置在地下隧道中的电缆的上方和下方的管道,以及用于向管道供水的泵,其中在管道的上部设置有多个溢流孔 纵向和溢出孔的水滴到电缆上。 地下传输电缆的冷却方法包括沿着沿着纵向方向设置在沿着纵向的多个溢流孔布置管道的步骤,沿着地下隧道铺设的电缆,通过使用泵向管道供水的步骤, 以及从溢流孔将水滴到电缆的步骤。 版权所有(C)2009,JPO&INPIT

    • 7. 发明专利
    • Insulation deterioration diagnostic method and insulation deterioration diagnostic system of power cable
    • 电力电缆绝缘诊断诊断方法及绝缘诊断诊断系统
    • JP2007046908A
    • 2007-02-22
    • JP2005228413
    • 2005-08-05
    • Exsym CorpTokyo Electric Power Co Inc:The東京電力株式会社株式会社エクシム
    • OTAKA IWAOTSUJIMOTO TOMIYUKINAKADE MASAHIKO
    • G01R31/12
    • PROBLEM TO BE SOLVED: To diagnose a deterioration in insulation of a cable having large thickness insulation, capable of easily applying the same, even in a narrow site.
      SOLUTION: The insulation deterioration diagnostic system 100 diagnoses deteroration in the cable 20 under measurement by impressing voltages with a selector switch 140 upon their drop with the AC voltage held for a prescribed time, after raising to a prescribed value after the DC voltage has been impressed and grounded, and by measuring the remaining charges constrained in the insulator 22 with the short circuit switch 145 and detection circuit C
      d , at AC voltage impression, with the remaining charge. A fixed time interval for impressing the AC voltage is set from the remaining charge value measured under the AC voltage impression satisfies the function that decays with a fixed time constant, and represents the error charges included in the remaining charges.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了诊断即使在狭窄的位置也能够容易地涂敷的绝缘厚度大的电缆的绝缘劣化。

      解决方案:绝缘劣化诊断系统100通过在选择开关140的下降之后施加电压,在AC电压保持规定时间之后,在直流电压达到规定值之后,对测量中的电缆20进行诊断 并且通过利用剩余电荷在AC电压印刷下用短路开关145和检测电路C SB测量在绝缘体22中约束的剩余电荷。 AC电压下测量的剩余电荷值满足以固定时间常数衰减的功能,并设定剩余电荷中包含的误差电荷的固定时间间隔。 版权所有(C)2007,JPO&INPIT

    • 9. 发明专利
    • Judging method for deterioration of power cable
    • 用于电力电缆检测的判断方法
    • JP2003270286A
    • 2003-09-25
    • JP2002068433
    • 2002-03-13
    • Furukawa Electric Co Ltd:TheTokyo Electric Power Co Inc:The古河電気工業株式会社東京電力株式会社
    • YAGI YUKIHIROISHII NOBORUNAKADE MASAHIKOINOUE DAISUKE
    • G01R31/12
    • PROBLEM TO BE SOLVED: To precisely diagnosis the degree of deterioration of a power cable by judgment criteria which deal even with various states of the deterioration caused by an installation environment of a cable line, etc., by forming such judgment criteria. SOLUTION: A commercial frequency AC voltage 1a is applied to the cable line 2 and a lossless standard capacitor 3, and a capacitive current whose phase leads a test voltage by 90° is balanced by a loss current measuring bridge 4. A loss current of the cable line 2 is extracted, and the magnitudes of harmonic currents in this loss current and the phases of the harmonic currents with respect to a fundamental current are found. At least, two kinds of combinations of magnitudes and phases of a harmonic current to be a fundamental when judgment is performed, are set. Possible values as the magnitude and the phase of the harmonic current which corresponds to an assumed state of deterioration are derived by the use of these values. By using these values as thresholds, and comparing these thresholds with values obtained by the measurement, deterioration is determined. COPYRIGHT: (C)2003,JPO
    • 要解决的问题:通过形成这样的判断标准,通过判断标准来精确地诊断电力电缆的劣化程度,判断标准甚至由处理电缆线路的安装环境导致的各种恶化状态等进行诊断。

      解决方案:将商用频率交流电压1a施加到电缆线2和无损标准电容器3,并且将相位超过90°的测试电压的电容电流由损耗电流测量桥4平衡。损耗 提取电缆线2的电流,并且找到该损耗电流中的谐波电流的大小和相对于基波的谐波电流的相位。 设定当进行判断时,谐波电流的大小和相位的两种组合为基本关系的至少两种。 通过使用这些值,可以得出可能的值作为对应于假设的劣化状态的谐波电流的大小和相位。 通过使用这些值作为阈值,并将这些阈值与通过测量获得的值进行比较,确定劣化。 版权所有(C)2003,JPO

    • 10. 发明专利
    • METHOD FOR ESTIMATING tanδ DISTRIBUTION OF CABLE LINE, AND METHOD FOR ESTIMATING DIELECTRIC HEATING CHARACTERISTICS
    • 用于估计电缆线的扁平线分配的方法和估计介质加热特性的方法
    • JP2009065747A
    • 2009-03-26
    • JP2007229827
    • 2007-09-05
    • Tokyo Electric Power Co Inc:TheViscas Corp東京電力株式会社株式会社ビスキャス
    • NAKADE MASAHIKOIDE KENICHITAKAHASHI SUSUMUNAKAJIMA TAKENORI
    • H02G1/06G01R27/26H01B13/00
    • PROBLEM TO BE SOLVED: To estimate the tanδ distribution and the heating characteristics of an OF cable line having extremely degraded oil tanδ exactly based on the insulating oil tanδ sampled from the line. SOLUTION: Insulating oil is sampled from an aged OF cable line and the tanδ is measured. The tanδ is determined at predetermined parts where the cable insulator 1b and a reinforcement insulating paper 2a come into fluid conduct with the insulating oil (box oil) from the tanδ of the insulating oil thus measured. Incidentally, the tanδ (t) in the reference electric field dependent on the penetration thickness t of degraded insulating oil in the direction of lamination of the cable insulating paper 1b and the reinforcement insulating paper 2a and the direction of an oil immersed paper perpendicular to the direction of lamination is determined starting with the tanδ at a predetermined part in fluid conduct with the degraded insulating oil, and then the tanδ distribution at each part of the insulator is determined based on the electric field distribution at each part of the insulator of the OF cable line, and the tanδ and the tanδ (t) at a predetermined part in the reference electric field. Dielectric heating simulation can be performed using this result. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:基于从线路采样的绝缘油tanδ,精确地估计具有极低劣油油tanδ的OF电缆线的tanδ分布和加热特性。

      解决方案:绝缘油从老化的电缆线采样,并测量tanδ。 在电绝缘体1b和加强绝缘纸2a与绝缘油(箱式油)的tanδ流体导通的预定部分处确定tanδ。 顺便提及,参考电场中的tanδ(t)取决于劣化的绝缘油在电缆绝缘纸1b和加固绝缘纸2a的层压方向上的穿透厚度t和垂直于该绝缘纸的油浸纸的方向 层压方向由在劣化的绝缘油流体传导的预定部分处的tanδ开始确定,然后基于绝缘子的每个部分处的电场分布来确定绝缘体的每个部分处的tanδ分布 电缆线,以及参考电场中的预定部分处的tanδ和tanδ(t)。 可以使用此结果进行介电加热模拟。 版权所有(C)2009,JPO&INPIT