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：US5633800A

公开(公告)日：1997-05-27

申请号：US964168

申请日：1992-10-21

申请人： Raymond J. Bankert ,  Imdad Imam ,  Harindra Rajiyah

发明人： Raymond J. Bankert ,  Imdad Imam ,  Harindra Rajiyah

IPC分类号： G07C3/00 ,  G07C3/14

CPC分类号： G07C3/00 ,  Y10S706/92

摘要： A diagnostic system and method for rotating machinery having mechanical problems combine AI-based interpretive reasoning with rotordynamic-based modeling and numerical optimization. A vibration response in the machinery to be diagnosed is first measured by machine sensors, and this measured response is used in a rule-based expert system to determine a probable cause of the machinery's mechanical problem. An appropriate finite element analytical model of the machinery is generated based on the probable cause. An optimizer computes the predicted response from the analytical model and compares it with the measured response. The model is automatically refined, guided by the expert system and numerical optimization, to match the predicted response with the measured response. The modifications to the model necessary to duplicate the measured response of the defective machinery are then indicative of the defects.

摘要翻译： 具有机械问题的旋转机械的诊断系统和方法将基于AI的解释推理与基于旋转动力学的建模和数值优化相结合。 要诊断的机械中的振动响应首先由机器传感器测量，并且该测量响应在基于规则的专家系统中用于确定机械机械问题的可能原因。 基于可能的原因生成机械的适当的有限元分析模型。 优化器计算来自分析模型的预测响应并将其与测量响应进行比较。 该模型在专家系统和数值优化指导下自动细化，将预测响应与测量响应相匹配。 复制有缺陷机械的测量响应所需的模型的修改然后表示缺陷。

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：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。

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：US5430597A

公开(公告)日：1995-07-04

申请号：US313

申请日：1993-01-04

申请人： Bharat S. Bagepalli ,  Mario Ghezzo ,  Richard J. Saia ,  Imdad Imam

发明人： Bharat S. Bagepalli ,  Mario Ghezzo ,  Richard J. Saia ,  Imdad Imam

IPC分类号： H01H9/40 ,  H01H59/00 ,  H01H71/12 ,  H01H73/00

CPC分类号： H01H59/0009 ,  H01H2071/008 ,  H01H71/123 ,  H01H9/40

摘要： A circuit interruption device having a plurality of micromechanical switches mounted on a substrate in a parallel-series array. The array includes a plurality of line branches connected in parallel in a circuit line. Each of the line branches has at least two of the switches serially connected therein. The micromechanical switches each has a pair of contacts formed on the substrate, a bridging contact movably formed on the substrate, and an actuator for causing the bridging contact to move in and out of contact with the contacts. The bridging contact can be either a member slidably disposed in a channel formed on the substrate or member attached to an end of a cantilever having its other end attached to the substrate. The actuator is controlled by a trip device which is also mounted on the substrate. The trip device senses the current in the circuit line and causes the switches to open when a predetermined level of current in the line is exceeded.

摘要翻译： 一种电路中断装置，具有以平行阵列阵列安装在基板上的多个微机械开关。 阵列包括在电路线中并联连接的多个线分支。 每个线路分支具有串联连接在其中的至少两个开关。 微机械开关各自具有形成在基板上的一对触点，可移动地形成在基板上的桥接触头和用于使桥接触点移动进入和断开与触点接触的致动器。 桥接接触可以是可滑动地设置在形成在基底上的通道中的构件或附接到其另一端附接到基底的悬臂的端部的构件。 致动器由也安装在基板上的跳闸装置控制。 跳闸装置感测电路线路中的电流，并且当超过线路中的预定电流电流时使开关断开。