Circuit breaker
    1.
    发明授权
    Circuit breaker 失效
    断路器

    公开(公告)号:US5354959A

    公开(公告)日:1994-10-11

    申请号:US034866

    申请日:1993-03-19

    摘要: A double-break type circuit breaker includes two resistor contacts which are to be connected in parallel with respectively two main contacts when the main contacts are closed. An engagement mechanism is provided for linking the main contacts operated by a first hydraulic operation apparatus and the resistor contacts operated by a second hydraulic operation apparatus.

    摘要翻译: 双断路型断路器包括两个电阻触点,当主触点闭合时,两个电阻触点与两个主触点并联连接。 提供一种接合机构,用于连接由第一液压操作装置操作的主触点和由第二液压操作装置操作的电阻触头。

    Circuit breaker
    2.
    发明授权
    Circuit breaker 失效
    断路器

    公开(公告)号:US5367134A

    公开(公告)日:1994-11-22

    申请号:US46997

    申请日:1993-04-16

    CPC分类号: H01H33/34 H01H33/16

    摘要: In a closing operation of a circuit breaker with resistor contact, a resister contact is closed prior to closing of a main contact by the same first hydraulic operation system. In opening operation, the resistor contact is driven by a second hydraulic operation system used to close the main contact after operating the main contact by the first hydraulic operation system. Opening timing of the resistor contact is controlled by a mechanical interlock mechanism or hydraulic control circuit.

    摘要翻译: 在具有电阻接触的断路器的闭合操作中,在通过相同的第一液压操作系统关闭主触头之前,电阻触点被闭合。 在打开操作中,电阻接触由第二液压操作系统驱动,用于在通过第一液压操作系统操作主触点之后关闭主触点。 电阻触点的开启时间由机械互锁机构或液压控制电路控制。

    Circuit breaker and driving mechanism thereof
    3.
    发明授权
    Circuit breaker and driving mechanism thereof 失效
    断路器及其驱动机构

    公开(公告)号:US5451731A

    公开(公告)日:1995-09-19

    申请号:US322363

    申请日:1994-10-13

    CPC分类号: H01H33/168 H01H33/14

    摘要: In a double-break type circuit breaker having resistor contacts which are to be connected in parallel with main contacts in not only closing operation but also breaking operation, the resistor contacts are opened by a force due to loading of elastic members in the breaking operation and the elastic members are loaded for storing the driving force In the closing operation.

    摘要翻译: 在具有电阻触点的双断路型断路器中,不仅在闭合动作中与主触点并联而且断开操作,所以电阻触点由于在断开操作中的弹性部件的加载而被打开, 在关闭操作中,弹性构件被装载用于存储驱动力。

    Gas circuit breaker
    4.
    发明授权
    Gas circuit breaker 失效
    气体断路器

    公开(公告)号:US5387773A

    公开(公告)日:1995-02-07

    申请号:US100302

    申请日:1993-08-02

    摘要: In a stationary contact unit of a gas circuit breaker, an arc-quenching cylinder for passing an arc-quenching insulation gas is formed in a substantially semicircular shape, and the stationary contact unit is supported by an insulation frame which is disposed beneath the dent part of the semicircular portion of the arc-quenching cylinder. The insulation frame is prevented from the degradation of dielectric strength between the stationary contact unit and a grounded tank, and the size of the gas circuit breaker is decreased.

    摘要翻译: 在气体断路器的固定接触单元中,用于使灭弧绝缘气体通过的消弧筒形成为大致半圆形,并且固定接触单元由设置在凹部下方的绝缘框架支撑 的弧形圆弧的半圆形部分。 防止绝缘框架降低固定接触单元和接地箱之间的介电强度,并且减小气体断路器的尺寸。

    Switch
    5.
    发明授权
    Switch 失效
    开关

    公开(公告)号:US5514844A

    公开(公告)日:1996-05-07

    申请号:US94876

    申请日:1993-07-22

    CPC分类号: H01H33/901 H01H33/982

    摘要: A switch for use in electric power includes a fixed contact, a moving contact performing a switching operation with respect to the fixed contact, a cylinder working with the moving contact, a piston slidably provided in the cylinder, a buffer chamber which is surrounded by the cylinder and the piston, and is filled with an arc-extinguishing gas, and a second insulating nozzle mounted to an end of the cylinder on the side of the fixed contact, wherein the arc-extinguishing gas in the buffer chamber is sprayed through the nozzle on an arc generating between the fixed contact and the moving contact at an opening time of the moving contact.

    摘要翻译: 用于电力的开关包括固定触点,执行相对于固定触点的切换操作的移动触点,与移动触点一起工作的气缸,可滑动地设置在气缸中的活塞,缓冲室,其被 气缸和活塞,并且填充有灭弧气体;以及第二绝缘喷嘴,其安装在固定触头一侧的气缸的端部,其中缓冲室中的灭弧气体通过喷嘴喷射 在活动触点的打开时间在固定触点和移动触点之间产生电弧。

    Porous lithium aluminate carrier of spinel structure for catalyst
    6.
    发明授权
    Porous lithium aluminate carrier of spinel structure for catalyst 失效
    用于催化剂的尖晶石结构的多孔铝酸锂载体

    公开(公告)号:US5885917A

    公开(公告)日:1999-03-23

    申请号:US880388

    申请日:1997-06-23

    摘要: A porous lithium aluminate carrier for catalyst has a spinel structure which has a mean pore diameter in the range of 40 to 1,000 angstroms and a total pore volume in the range of 0.2 to 1.5 mL/g. The porous lithium aluminate carrier can be used for supporting a catalyst compound containing a platinum group metal. The catalyst on the carrier can be favorably employed for promoting catalytic reaction of a nitrite ester and carbon monoxide to prepare a carbonate diester such as dimethyl carbonate.

    摘要翻译: 用于催化剂的多孔铝酸锂载体具有尖晶石结构,其平均孔径在40至1,000埃的范围内,总孔体积在0.2至1.5mL / g的范围内。 多孔铝酸锂载体可用于负载含有铂族金属的催化剂化合物。 载体上的催化剂可以有利地用于促进亚硝酸酯和一氧化碳的催化反应以制备碳酸二酯如碳酸二甲酯。

    Porous lithium aluminate carrier of spinel structure for catalyst
    7.
    发明授权
    Porous lithium aluminate carrier of spinel structure for catalyst 失效
    用于催化剂的尖晶石结构的多孔铝酸锂载体

    公开(公告)号:US5688984A

    公开(公告)日:1997-11-18

    申请号:US652729

    申请日:1996-05-22

    摘要: A porous lithium aluminate carrier for catalyst has a spinel structure which has a mean pore diameter in the range of 40 to 1,000 angstroms and a total pore volume in the range of 0.2 to 1.5 mL/g. The porous lithium aluminate carrier can be used for supporting a catalyst compound containing a platinum group metal. The catalyst on the carrier can be favorably employed for promoting catalytic reaction of a nitrite ester and carbon monoxide to prepare a carbonate diester such as dimethyl carbonate.

    摘要翻译: 用于催化剂的多孔铝酸锂载体具有尖晶石结构,其平均孔径在40至1,000埃的范围内,总孔体积在0.2至1.5mL / g的范围内。 多孔铝酸锂载体可用于负载含有铂族金属的催化剂化合物。 载体上的催化剂可以有利地用于促进亚硝酸酯和一氧化碳的催化反应以制备碳酸二酯如碳酸二甲酯。

    Ammoxidation catalyst for the production of acrylonitrile from propylene
and process for producing the same
    8.
    发明授权
    Ammoxidation catalyst for the production of acrylonitrile from propylene and process for producing the same 失效
    用于从丙烯生产丙烯腈的氨氧化催化剂及其制备方法

    公开(公告)号:US4290922A

    公开(公告)日:1981-09-22

    申请号:US134053

    申请日:1980-03-26

    摘要: 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.

    摘要翻译: 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。

    Method for the catalytical preparation of acrylonitrile
    9.
    发明授权
    Method for the catalytical preparation of acrylonitrile 失效
    丙烯腈催化制备方法

    公开(公告)号:US4070390A

    公开(公告)日:1978-01-24

    申请号:US732361

    申请日:1976-10-14

    摘要: Acrylonitrile can be produced in a high yield by the catalytical ammoxidation of propylene at an elevated temperature, preferably of 330.degree. to 470.degree. C, in the presence of a new type of catalyst consisting of an oxide composition of the empirical formula: Mo.sub.a Co.sub.b Fe.sub.c Bi.sub.d X.sub.e O.sub.f wherein X denotes at least one atom of an element selected from vanadium and tellurium and wherein the ratio a:b:c:d:e:f is in a range of 10:3 to 10:1 to 7:0.1 to 0.7:0.01 to 1:34.6 to 54.1, said catalyst being prepared by providing an aqueous mixture containing molybdenum-, cobalt- and iron-containing compounds, bismuth-containing compound, and vanadium-or tellurium-containing compound, converting the aqueous mixture into a dried solid mixture and calcining the solid mixture at a temperature of at least 500.degree. C.

    摘要翻译: 丙烯腈可以通过在升高的温度下,优选在330℃至470℃的丙烯的催化氨氧化反应,在新型催化剂的存在下,由经验式的氧化物组合物:MoaCobFecBidXeOf,其中X 表示选自钒和碲中的元素的至少一个原子,其中a:b:c:d:e:f的比率在10:3至10:1至7:0.1至0.7:0.01至1的范围内 :34.6至54.1,所述催化剂通过提供含有含钼,钴和铁的化合物,含铋化合物和含钒或碲化合物的水性混合物制备,将含水混合物转化成干燥的固体混合物, 在至少500℃的温度下煅烧固体混合物

    Synchronous switching apparatus for use with a multiple phase power system
    10.
    发明授权
    Synchronous switching apparatus for use with a multiple phase power system 有权
    用于多相电力系统的同步开关装置

    公开(公告)号:US06392390B1

    公开(公告)日:2002-05-21

    申请号:US09508364

    申请日:2000-03-10

    IPC分类号: G05F170

    CPC分类号: H01H9/563

    摘要: 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.

    摘要翻译: 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。