公开(公告)号：US5724017A

公开(公告)日：1998-03-03

申请号：US509265

申请日：1995-07-31

申请人： Frederic Ghislain Pla ,  Imdad Imam ,  Frank Albert Pitman, Jr. ,  Stephen Linwood Smith

发明人： Frederic Ghislain Pla ,  Imdad Imam ,  Frank Albert Pitman, Jr. ,  Stephen Linwood Smith

IPC分类号： H01F27/33 ,  H01F27/00

CPC分类号： H01F27/33

摘要： An electrical transformer includes a housing, a transformer core and winding subassembly located within the housing, and an active mount subassembly having an active mount and a controller. The active mount has a first end attached to the housing and a second end attached to the transformer core and winding subassembly. The controller has an output port connected to the active mount. The active mount cancels out (or reduces) noise-causing vibrations which come from the transformer core and winding subassembly during transformer operation.

摘要翻译： 电变压器包括壳体，变压器铁芯和位于壳体内的绕组子组件，以及具有主动安装座和控制器的主动安装子组件。 主动安装件具有附接到壳体的第一端和附接到变压器铁芯和绕组子组件的第二端。 控制器具有连接到主动安装座的输出端口。 在变压器运行期间，主动安装座抵消（或减少）来自变压器铁心和绕组组件的噪音引起的振动。

公开(公告)号：US5710533A

公开(公告)日：1998-01-20

申请号：US507130

申请日：1995-07-31

申请人： Frederic Ghislain Pla ,  Imdad Imam ,  Robert Arvin Hedeen ,  Frank Albert Pitman, Jr. ,  Stephen Linwood Smith

发明人： Frederic Ghislain Pla ,  Imdad Imam ,  Robert Arvin Hedeen ,  Frank Albert Pitman, Jr. ,  Stephen Linwood Smith

IPC分类号： H01F27/33 ,  H01F15/00

CPC分类号： H01F27/33

摘要： An electrical transformer includes a housing, a transformer core and winding subassembly located in the housing, and a cooling fan subassembly. The cooling fan subassembly includes a variable speed fan located outside the housing, a temperature sensor located near the housing, and a controller having an output port connected to the variable speed fan and an input port connected to the temperature sensor. The controller reduces the fan speed (and hence the fan noise) when a lower fan speed can maintain the desired temperature as sensed by the temperature sensor. Preferably, the electrical transformer further includes an active mount subassembly and/or (when the housing includes a tank containing transformer fluid) a mechanism for varying the dynamic pressure of such transformer fluid.

摘要翻译： 电气变压器包括壳体，变压器铁芯和位于壳体中的绕组子组件和冷却风扇子组件。 冷却风扇子组件包括位于壳体外部的变速风扇，位于壳体附近的温度传感器，以及具有连接到变速风扇的输出端口和连接到温度传感器的输入端口的控制器。 当较低的风扇速度可以保持温度传感器感测到的所需温度时，控制器会降低风扇转速（从而降低风扇噪音）。 优选地，电变压器还包括主动安装子组件和/或（当壳体包括容纳变压器流体的罐时）用于改变这种变压器流体的动态压力的机构。

公开(公告)号：US5726617A

公开(公告)日：1998-03-10

申请号：US507131

申请日：1995-07-31

申请人： Frederic Ghislain Pla ,  Imdad Imam ,  Frank Albert Pitman, Jr. ,  Stephen Linwood Smith

发明人： Frederic Ghislain Pla ,  Imdad Imam ,  Frank Albert Pitman, Jr. ,  Stephen Linwood Smith

IPC分类号： H01F27/33 ,  H01F15/00

CPC分类号： H01F27/33

摘要： An electrical transformer includes a tank containing transformer fluid and a transformer core and winding subassembly located in the transformer fluid within the tank. The electrical transformer also includes a mechanism for varying the dynamic pressure of the transformer fluid within the tank during electromagnetic operation of the transformer core and winding subassembly to cancel out (or reduce) noise-causing vibrations in the transformer fluid which come from the operating transformer core and winding subassembly. Preferably, the electrical transformer further includes an active mount subassembly.

摘要翻译： 一个电力变压器包括一个容纳变压器流体的容器，以及一个变压器铁心和位于水箱内的变压器流体中的绕组组件。 电变压器还包括用于在变压器铁芯和绕组组件的电磁操作期间改变容器内的变压器流体的动态压力的机构，以抵消（或减少）来自操作变压器的变压器流体中的噪声引起的振动 铁芯和绕组组件。 优选地，电变压器还包括主动安装子组件。

公开(公告)号：US4984173A

公开(公告)日：1991-01-08

申请号：US363841

申请日：1989-06-09

申请人： Imdad Imam ,  Gerald J. Carlson

发明人： Imdad Imam ,  Gerald J. Carlson

IPC分类号： G01B21/24 ,  G01H1/00

CPC分类号： G01B21/24 ,  G01H1/003

摘要： Each bearing of an aligned line-shaft has vibration responses which differ from the vibration responses of a misaligned system in which at least one of the bearings is statically displa=ced. Computed static displacement values for each bearing are derived from the equation of motion of the system employing mass, stiffness and damping coefficients of the system. The static displacement value of each bearing is computed from the vibration responses of all of the bearings. Accelerometers sense the vibration response of each bearing. A computer computes the magnitude of misalignment of each bearing from the sensed responses. The computed results provide an indication of the magnitude of static displacement of each bearing of the system causing the sensed vibration response.

摘要翻译： 对准的线轴的每个轴承具有不同于其中至少一个轴承静止位置的未对准系统的振动响应的振动响应。 每个轴承的计算静态位移值是从采用系统的质量，刚度和阻尼系数的系统的运动方程得出的。 每个轴承的静态位移值由所有轴承的振动响应计算。 加速度传感器检测每个轴承的振动响应。 计算机从感测到的响应计算每个轴承的未对准的大小。 计算结果提供了导致感测的振动响应的系统的每个轴承的静态位移的大小的指示。

公开(公告)号：US4225761A

公开(公告)日：1980-09-30

申请号：US841429

申请日：1977-10-12

申请人： Philip Barkan ,  Imdad Imam

发明人： Philip Barkan ,  Imdad Imam

IPC分类号： H01H33/666 ,  H01H33/66

CPC分类号： H01H33/666 ,  H01H2033/6667

摘要： This circuit breaker comprises a plurality of a vacuum-type circuit interrupters, each having a movable contact rod. A common operating device for the interrupters comprises a linearly-movable operating member. The interrupters are mounted at one side of the operating member with their movable contact rods extending in a direction generally toward the operating member. Means is provided for mechanically coupling the operating member to the contact rods, and this means comprises a plurality of insulating operating rods, each connected at one end to the operating member and at its opposite end to one of the movable contact rods. The operating rods are of substantially equal length and have longitudinal axes that converge and intersect at substantially a common point.

摘要翻译： 该断路器包括多个真空型电路断路器，每个断路器均具有可动接触杆。 用于断路器的常用操作装置包括线性可移动操作构件。 断路器安装在操作构件的一侧，其可动接触杆沿大致朝向操作构件的方向延伸。 提供了用于将操作构件机械地联接到接触杆的装置，并且该装置包括多个绝缘操作杆，每个绝缘操作杆的一端连接到操作构件，并且在其相对端部连接到一个可动接触杆。 操作杆的长度基本上相同，并且具有在基本相同的点处会聚和相交的纵轴。

公开(公告)号：US06786487B2

公开(公告)日：2004-09-07

申请号：US09683254

申请日：2001-12-05

申请人： Osman Saim Dinc ,  Norman Arnold Turnquist ,  Mehmet Demiroglu ,  Hamid Reza Sarshar ,  Ahmad Safi ,  Mahmut Faruk Aksit ,  Roger Neal Johnson ,  Anthony Holmes Furman ,  Imdad Imam ,  Gerald Burt Kliman ,  James Hopkins ,  Richard Robert Larsen ,  David Michael Prowse ,  Steven Wayne Russell

发明人： Osman Saim Dinc ,  Norman Arnold Turnquist ,  Mehmet Demiroglu ,  Hamid Reza Sarshar ,  Ahmad Safi ,  Mahmut Faruk Aksit ,  Roger Neal Johnson ,  Anthony Holmes Furman ,  Imdad Imam ,  Gerald Burt Kliman ,  James Hopkins ,  Richard Robert Larsen ,  David Michael Prowse ,  Steven Wayne Russell

IPC分类号： F01D1102

CPC分类号： F01D11/025 ,  F05D2240/55 ,  F05D2240/56 ,  F05D2270/62 ,  F16J15/445 ,  Y10S277/929

摘要： An actuated seal assembly for controlling flow in a fluid path in turbomachinery comprising a seal and a seal carrier coupled to the seal is provided. A displacement apparatus is coupled to the seal carrier for positioning the seal so as to control the flow in the fluid path. In addition, a drive system is provided for powering the displacement apparatus.

摘要翻译： 提供了一种用于控制涡轮机械中的流体路径中的流动的致动密封组件，包括密封件和联接到密封件的密封载体。 位移设备联接到密封载体上，用于定位密封件，以便控制流体路径中的流动。 此外，提供驱动系统来为位移设备供电。

公开(公告)号：US5258923A

公开(公告)日：1993-11-02

申请号：US076311

申请日：1987-07-22

申请人： Imdad Imam ,  Steven H. Azzaro ,  Raymond J. Bankert

发明人： Imdad Imam ,  Steven H. Azzaro ,  Raymond J. Bankert

IPC分类号： G01H1/00 ,  G01N29/12 ,  G01M7/00

CPC分类号： G01N29/12 ,  G01H1/003 ,  G01N2291/2693

摘要： System and method for detecting the occurrence, location and depth of a crack in the rotor of a turbine-generator. The location and depth of a crack are determined by monitoring the fundamental and histogram harmonic components of vibrations at certain predetermined points along the length of the rotor. The histogram harmonic components are normalized relative to the fundamental component, and the normalized histogram harmonic components are monitored to determine the location of the crack. The unnormalized histogram harmonic components are analyzed to determine the depth of the crack. The occurrence of a crack is detected by monitoring the amplitude and phase of rotor vibrations during an accel or decel operation to detect harmonic resonances which are characteristic of a crack in the rotor. The amplitude and phase data is filtered to eliminate spurious data, and it is interpolated to provide baseline and current data at matching speed points.

摘要翻译： 用于检测涡轮发电机转子中裂纹的发生，位置和深度的系统和方法。 裂纹的位置和深度通过监测沿着转子长度的某些预定点的振动的基本和直方图谐波分量来确定。 直方图谐波分量相对于基波分量进行归一化，并且监测归一化的直方图谐波分量以确定裂纹的位置。 分析非标准化直方图谐波分量以确定裂纹的深度。 通过在加速或减速操作期间监测转子振动的振幅和相位来检测裂纹的发生，以检测作为转子裂纹特征的谐波谐振。 过滤幅度和相位数据以消除杂散数据，并将其内插以在匹配的速度点提供基线和当前数据。

公开(公告)号：US4927342A

公开(公告)日：1990-05-22

申请号：US282784

申请日：1988-12-12

申请人： Jeung T. Kim ,  Imdad Imam

发明人： Jeung T. Kim ,  Imdad Imam

IPC分类号： F04C29/06

CPC分类号： F04C29/061 ,  F04C29/068 ,  Y10S181/403

摘要： A Helmholtz resonator is used in communication with the compression chamber of a rotary compressor in order to attenuate noise. The resonator concentrates the attenuation of noise in a frequency band around 4 kHz corresponding to the concentration of noise produced by a particular rotary compressor, this band also corresponding to the frequencies which the human ears are most sensitive to. The resonator branches off from the discharge port in an end wall of the compressor. The resonantor uses an easily machined cylindrical resonance cavity on the surface of the end wall, the resonance cavity also being bounded on one side by a cylindrical wall of the rotary compressor. The resonator significantly reduces the noise in a rotary compressor of a specific type commonly used for compressing refrigerant gases in a refrigerator.

摘要翻译： 亥姆霍兹共振器用于与旋转压缩机的压缩室连通以衰减噪声。 谐振器将噪声的衰减集中在与由特定旋转压缩机产生的噪声的浓度相对应的大约4kHz的频带中，该频带也对应于人耳最敏感的频率。 谐振器从压缩机的端壁中的排出口分支。 谐振器在端壁的表面上使用容易加工的圆柱形谐振腔，谐振腔也通过旋转式压缩机的圆柱形壁在一侧限定。 谐振器显着地降低了通常用于压缩冰箱中的制冷剂气体的特定类型的旋转压缩机中的噪声。

公开(公告)号：US4656445A

公开(公告)日：1987-04-07

申请号：US876132

申请日：1986-06-19

申请人： Bharat S. Bagepalli ,  Imdad Imam ,  Edward K. Howell

发明人： Bharat S. Bagepalli ,  Imdad Imam ,  Edward K. Howell

IPC分类号： H01H3/22 ,  H01H77/10

CPC分类号： H01H3/222

摘要： A high speed contact driver for use in an electrical circuit interrupter includes a pair of series-connected, elongate and generally opposing electrical conductors bowed in predetermined, generally opposing contours. These conductors are connected to a bridging electrical contact which is normally biased into a bridging position between a pair of stationary contacts. Pulse generating means are provided for applying a current pulse of predetermined magnitude to the electrical conductors. In response to this current pulse, these electrical conductors electromagnetically repulse each other and drive the bridging contact out of bridging position between the stationary contacts.

摘要翻译： 用于电路断路器的高速接触驱动器包括一对串联连接的，细长的和大致相对的电导体，其在预定的大致相对的轮廓上弯曲。 这些导体连接到通常被偏置在一对固定触点之间的桥接位置的桥接电触头。 提供了脉冲发生装置，用于向电导体施加预定幅度的电流脉冲。 响应于该电流脉冲，这些电导体电磁地相互斥力并驱动桥接接触离开固定触点之间的桥接位置。

公开(公告)号：US4408294A

公开(公告)日：1983-10-04

申请号：US248571

申请日：1981-03-27

申请人： Imdad Imam

发明人： Imdad Imam

IPC分类号： G01H1/00 ,  G01M7/00

CPC分类号： G01H1/006

摘要： A method is disclosed for detecting incipient cracks in the rotor of a turbine-generator while the turbine-generator is on-line operating under normal conditions. Vibration signature analysis is performed on a set of difference signals produced by superposing and subtracting corresponding enhanced background and foreground vibration signals. Each enhanced vibration signal is created by superposing and summing an integral number of vibration signal segments, each segment corresponding to one revolution of the rotor. An incipient crack is manifested principally by the appearance and increase in relative amplitude of signal harmonics at twice the rotational speed of the rotor. The method of the invention is sufficiently sensitive to detect cracks having a depth on the order of less than one-percent the diameter of the rotor.

摘要翻译： 公开了一种用于在涡轮发电机在正常条件下在线运行时检测涡轮发电机的转子中的初始裂纹的方法。 对通过叠加和减去相应的增强背景和前景振动信号产生的一组差分信号执行振动特征分析。 每个增强的振动信号通过将整数数量的振动信号段叠加并相加而产生，每个振动信号段对应于转子的一圈。 初始裂纹主要表现在转子转速两倍的信号谐波的相对幅度的出现和增加。 本发明的方法对于检测深度小于转子直径的1％的裂纹是足够敏感的。