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    • 7. 发明授权
    • Method and apparatus for controlling excitation of a generator
    • 用于控制发电机的激励的方法和装置
    • US4326159A
    • 1982-04-20
    • US71403
    • 1979-08-30
    • Hiroaki AotsuAkira IsonoTsutomu InayamaMamoru Fukushima
    • Hiroaki AotsuAkira IsonoTsutomu InayamaMamoru Fukushima
    • H02P9/10H02P9/14
    • H02P9/10
    • Voltage, current and field voltage of a generator connected to an electric power system are sampled at a predetermined period for analog-digital conversion and then led to a digital computer. In addition to computation for AVR, the computer computes from its input the generator output power, and also monitors the occurrence of a fault, the removal of the fault and variation in the generator output in the system. After the occurrence of a fault, the field excitation of the generator is intensified until the generator output power reaches substantially a peak value, but after the peak value is substantially passed by, the excitation is conversely depressed to a value below the level which is present before the fault occurs. When the generator output power recovers the value which is present before the fault occurs, the computer returns to deliver the AVR output.
    • 连接到电力系统的发电机的电压,电流和电场电压以预定的时间被采样以进行模数转换,然后被引导到数字计算机。 除了计算AVR之外,计算机还可以从输入端计算发电机的输出功率,同时监测故障的发生,故障的消除和系统发电机输出的变化。 在故障发生之后,发电机的场激励增强,直到发电机输出功率达到基本上的峰值,但是在峰值基本上过去之后,激励被反而下降到低于存在的水平的值 在故障发生之前。 当发电机输出功率恢复故障发生之前存在的值时,计算机返回以传送AVR输出。
    • 9. 发明申请
    • Fuel sealing structure
    • 燃油密封结构
    • US20070181580A1
    • 2007-08-09
    • US10598881
    • 2005-03-14
    • Kazuhiko KimuraToru MashimoMamoru FukushimaNoriyuki OhsawaSatoshi Komada
    • Kazuhiko KimuraToru MashimoMamoru FukushimaNoriyuki OhsawaSatoshi Komada
    • B65D53/00
    • B65D41/045
    • To provide a fuel sealing structure capable of preventing the leakage of not only liquid fuel but also gasified fuel, an annular packing 30 is interposed between an annular sealing surface 15 on an opening part 11 of a container 20 and an annular sealing surface 25 of a closure 20. The distance between the second regions 15b, 25b of the sealing surfaces 15, 25 is shorter than that between the first regions 15a, 25a. The packing 30 includes a first sealing part 31 sandwiched between the first regions 15a,25a and a second sealing part 32 sandwiched between the 15b, 25b. The second sealing part 32 is smaller in thickness than the first sealing part 31 and the difference of the thicknesses is larger than the difference of distances between the above-mentioned regions. With the closure 20 attached, the compression ratio of the second sealing part 32 is smaller than that of the first sealing part 31.
    • 为了提供能够防止液体燃料而且气化燃料泄漏的燃料密封结构,环形密封件30插入在容器20的开口部11上的环形密封表面15和位于容器20的环形密封表面25之间 封闭20。 密封表面15,25的第二区域15b,25b之间的距离比第一区域15a,25a之间的距离短。 填料30包括夹在第一区域15a,25a和夹在15b,25b之间的第二密封部分32的第一密封部分31。 第二密封部件32的厚度小于第一密封部件31,并且厚度差大于上述区域之间的距离差。 在封闭件20附接时,第二密封部32的压缩比小于第一密封部31的压缩比。