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    • 2. 发明授权
    • Synchronous switching apparatus for use with a multiple phase power system
    • 用于多相电力系统的同步开关装置
    • US06392390B1
    • 2002-05-21
    • US09508364
    • 2000-03-10
    • Hiroki ItoHaruhiko KohyamaMikio Hidaka
    • Hiroki ItoHaruhiko KohyamaMikio Hidaka
    • G05F170
    • H01H9/563
    • A synchronous switching apparatus for detecting a source voltage of each phase to close each phase at an electrical phase angle predetermined for each phase, including switching devices 1a-1c provided one for each phase for opening and closing an impedance load, switching devices 2a-2c for closing and opening the switching devices 1a-1c for each phase, measuring transformers 5a-5c for measuring source voltages of the respective phases and phase-to-phase voltages, and phase control devices 42 each for issuing a command for energizing the impedance load at an electrical phase angle in a range predetermined for each phase, when detecting a zero point of a source voltage of each phase or a zero point of each phase-to-phase voltage.
    • 一种同步开关装置,用于检测各相的源极电压,以每相预定的电相角关闭各相,包括为每个相设置的用于打开和闭合阻抗负载的开关装置1a-1c,开关装置2a-2c 用于关闭和打开每相的开关装置1a-1c,用于测量各相的源极电压的测量用变压器5a-5c和相间电压,以及各自用于发出用于向阻抗负载供电的指令的相位控制装置42 当检测到每个相的源电压的零点或每个相间电压的零点时,以每个相位预定的范围内的电相角。
    • 3. 发明授权
    • Phase control switching system
    • 相控开关系统
    • US06172863B2
    • 2001-01-09
    • US09339678
    • 1999-06-24
    • Hiroki ItoHaruhiko KohyamaMikio Hidaka
    • Hiroki ItoHaruhiko KohyamaMikio Hidaka
    • H02H318
    • H01H33/593H01H33/006Y10S323/908
    • A phase control switching system for controlling opening and closing timings of a power switching device to suppress the occurrence of an exciting rush current or a make-and-break surge voltage which is severe to system equipment such as a transformer, a reactor and a capacitor bank, or for controlling an arcing time of a circuit breaker to put the circuit breaker into operation for the arcing time leading to no-re-ignition or for the optimal breaking time. In the phase control switching system, a current measuring section or a current gradient measuring section is provided to measure a current value or a current gradient value of a current to be broken or introduced, and a reference phase detecting section estimates a current zero point of a current waveform on the basis of the measurements. Subsequently, a control section, upon receipt of an opening/closing command, an opening phase control operation using an arbitrary time point after the current waveform estimation as a reference.
    • 一种用于控制电力开关装置的开闭定时的相位控制切换系统,以抑制对诸如变压器,电抗器和电容器的系统设备严重的激励冲击电流或制动和中断浪涌电压的发生 或用于控制断路器的电弧时间以将断路器投入运行,用于导致无再点火或最佳断开时间的电弧时间。 在相位控制切换系统中,提供电流测量部或电流梯度测量部,以测量待破坏或引入的电流的电流值或电流梯度值,并且基准相位检测部估计当前的零点 基于测量的电流波形。 随后,控制部分在接收到打开/关闭命令之后,使用在当前波形估计之后的任意时间点作为基准的打开相位控制操作。
    • 8. 发明授权
    • Ammoxidation catalyst for the production of acrylonitrile from propylene
and process for producing the same
    • 用于从丙烯生产丙烯腈的氨氧化催化剂及其制备方法
    • US4290922A
    • 1981-09-22
    • US134053
    • 1980-03-26
    • Sumio UmemuraKyoji OhdanMikio HidakaToshio Kurafuji
    • Sumio UmemuraKyoji OhdanMikio HidakaToshio Kurafuji
    • B01J23/88C07B61/00C07C67/00C07C253/00C07C255/08B01J21/06B01J23/24
    • B01J23/8872B01J23/8876B01J23/8877B01J23/8878C07C253/26Y02P20/52
    • A catalyst for the ammoxidation of propylene to prepare acrylonitrile with a high yield thereof comprising an oxide composition of the empirical formula (I)Mo.sub.a Co.sub.b Ni.sub.c Fe.sub.d Bi.sub.e V.sub.f Ca.sub.g K.sub.h X.sub.i Si.sub.j O.sub.k (I)wherein X is zirconium and/or chromium, the subscripts a, b, c, d, e, f, g, h, i and j respectively denote the number of the respective atoms of the elements, when a=10, b=0 to 8, c=0 to 8, (b+c)=2 to 10, d=0.3 to 7, e=0.01 to 3, f=0.01 to 2, g=0.01 to 5, h=0.05 to 0.5, i=0 to 2, j=10 to 50, and the subscript k denotes the number of oxygen atoms which satisfies the average valency of the elements other than oxygen and the ratio a:k being in a range of 10:30 to 80, which catalyst is prepared by preparing an aqueous slurry containing respective element-containing compounds, by spray drying the aqueous slurry to prepare a dried solid precursory catalyst and, finally, by calcining the precursory catalyst as a temperature of from 500.degree. to 750.degree. C. to provide an activated catalyst.
    • 用于丙烯氨氧化以制备丙烯腈的高产率的催化剂,其包含经验式(I)的氧化物组合物,其中X是锆和/或铬,下标a,b,c,d,e的MoaCobNicFedBieVfCagKhXiSijOk(I) 当a = 10,b = 0〜8,c = 0〜8,(b + c)= 2〜10时,f,g,h,i,j分别表示各元素的原子数,d = 0.3〜7,e = 0.01〜3,f = 0.01〜2,g = 0.01〜5,h = 0.05〜0.5,i = 0〜2,j = 10〜50,下标k表示氧数 原子,其满足除氧之外的元素的平均化合价,a:k的比例在10:30至80的范围内,该催化剂通过制备含有各含元素化合物的含水浆料,通过喷雾干燥水溶液 浆料以制备干燥的固体前体催化剂,最后通过在500℃至750℃的温度下煅烧前体催化剂以提供活化的催化剂。