公开(公告)号：US5400586A

公开(公告)日：1995-03-28

申请号：US140477

申请日：1993-10-25

Applicant: Bharat S. Bagepalli ,  Osman S. Dinc ,  John Barnes ,  Robert Cromer ,  Imdad Imam

Inventor： Bharat S. Bagepalli ,  Osman S. Dinc ,  John Barnes ,  Robert Cromer ,  Imdad Imam

IPC: F01D9/02 ,  F01D11/00 ,  F02K1/80 ,  F16J15/32 ,  F23R3/60 ,  F02C7/20

CPC classification number: F01D9/023 ,  F01D11/005 ,  F02K1/805 ,  F16J15/3288 ,  F23R3/60 ,  F05D2230/642

Abstract: The gas turbine includes a combustor 10 having a transition piece 18 with its exit end spaced from a first-stage nozzle 22. A brush seal 26 seals about the space between the transition piece and first-stage nozzle. The brush seal includes a sealing cap 28 supported by one of the transition piece and the first-stage nozzle and having a portion 38 overlying the other of the transition piece and first-stage nozzle. A seal ring 30 is secured to the other of the transition piece and the first-stage nozzle and carries bristles 32 projecting therefrom for engagement with the overlying portion 38 of the sealing cap 28 to seal the gap between the transition piece and the first-stage nozzle. In one form, the side face portions of the bristles of the bristle pack form the seal by engaging against a planar sealing surface.

Abstract translation: 燃气轮机包括具有过渡件18的燃烧器10，其过渡件的出口端与第一级喷嘴22间隔开。刷密封件26围绕过渡件和第一级喷嘴之间的空间密封。 刷子密封件包括由过渡件和第一级喷嘴中的一个支撑的密封帽28，并且具有覆盖过渡件和第一级喷嘴中的另一个的部分38。 密封圈30固定到过渡件和第一级喷嘴中的另一个，并且承载从其突出的刷毛32，以与密封帽28的上覆部分38接合，以密封过渡件和第一级之间的间隙 喷嘴。 在一种形式中，刷毛包的刷毛的侧面部分通过与平面密封表面接合而形成密封件。

公开(公告)号：US5374792A

公开(公告)日：1994-12-20

申请号：US172

申请日：1993-01-04

Applicant: Mario Ghezzo ,  Richard J. Saia ,  Bharat S. Bagepalli ,  Imdad Imam ,  Dennis L. Polla

Inventor： Mario Ghezzo ,  Richard J. Saia ,  Bharat S. Bagepalli ,  Imdad Imam ,  Dennis L. Polla

IPC: B29C35/08 ,  B29C59/16 ,  H01H1/06 ,  H01H9/40 ,  H01H50/00 ,  H01H15/00 ,  B29C37/00 ,  B44C1/22

CPC classification number: H01H50/005 ,  B29C59/16 ,  B29C2035/0838 ,  H01H1/06 ,  H01H2001/0057 ,  H01H9/40 ,  Y10S438/94 ,  Y10T307/74

Abstract: Micromachining methods for fabricating micromechanical structures which include plunger elements free to reciprocate within cavities are fabricated using processing steps in common with those employed in high density interconnect (HDI) technology for multi-chip module packaging. A polymer, such as a polyimide, is utilized as a micromachinable material. In one embodiment, cavities are formed in the polymer material by laser ablation, employing a sacrificial layer as a mask. Electroplated copper may be employed as a sacrificial release layer. One particular structure is a micromechanical electric switch including an array of individual switch contacts actuatable in common.

Abstract translation: 用于制造微机械结构的微加工方法，其包括在空腔内自由往复运动的柱塞元件的微机械结构使用与用于多芯片模块封装的高密度互连（HDI）技术中采用的步骤相同的处理步骤来制造。 聚合物如聚酰亚胺被用作可微加工材料。 在一个实施例中，通过激光烧蚀在聚合物材料中形成空腔，采用牺牲层作为掩模。 电镀铜可以用作牺牲剥离层。 一个特定结构是微机电式电开关，其包括可共同致动的单独开关触点的阵列。

公开(公告)号：US5265147A

公开(公告)日：1993-11-23

申请号：US891023

申请日：1992-06-01

Applicant: Jeung T. Kim ,  Richard H. Lyon ,  Imdad Imam

Inventor： Jeung T. Kim ,  Richard H. Lyon ,  Imdad Imam

IPC: H01J35/10

CPC classification number: H01J35/101 ,  H01J2235/1093

Abstract: X-ray tube noise is reduced by coupling the stator mass to the neck section of the glass vacuum tube so that vibrations are dissipated by the stator and not transmitted to the bulk of the vacuum tube. The coupling is accomplished with a non-magnetic sealing material such as an epoxy sealant. The sealant will generally fill the gap between the stator and the neck section of the vacuum tube. Alternatively, the coupling can be done with a mechanical clamping device.

Abstract translation: 通过将定子质量耦合到玻璃真空管的颈部部分来减少X射线管噪声，使得振动由定子消散并且不传递到真空管的体积。 用非磁性密封材料如环氧树脂密封剂实现耦合。 密封剂通常填充真空管的定子和颈部之间的间隙。 或者，可以使用机械夹紧装置来实现联接。

公开(公告)号：US4751657A

公开(公告)日：1988-06-14

申请号：US752883

申请日：1985-07-08

Applicant: Imdad Imam ,  Horst G. DeLorenzi

Inventor： Imdad Imam ,  Horst G. DeLorenzi

IPC: G01H17/00 ,  G01H1/00 ,  G01M99/00 ,  G01M7/00

CPC classification number: G01H1/003

Abstract: Axial cracks in the rotor assembly of a variety of rotating machinery are detected while the rotor is being rotated, by sensing mechanical vibrations of the rotor at a location along the length thereof to produce a corresponding rotor vibration signal. A background vibration signal representing the vibration response at an earlier time is provided, as well as a monitor vibration signal representing the vibration response of the rotor at the time the monitor signal is obtained. A speed-dependent first harmonic difference signal is found by vectorially subtracting the first harmonic of the background vibration signal from the first harmonic of the monitor vibration signal. The relationship between the amplitude of the difference signal and the rotational speed of the rotor is then determined for rotational speeds away from the speed at which vibrational resonance occurs, with a relationship wherein the difference signal is proportional to the fourth power of the rotational speed being indicative of the presence of an axial crack in the rotor assembly. Histogram techniques improve the signal-to-noise ratio of the background vibration signal and of the monitor vibration signal. The vibration response of the rotor assembly at rotational speeds near the resonance speed may be utilized in conjunction with the response at speeds away from the resonance speed, in order to confirm the presence of a rotor crack.

Abstract translation: 通过在沿其长度的位置处感测转子的机械振动来检测转子正在旋转的各种旋转机械的转子组件中的轴向裂纹，以产生相应的转子振动信号。 提供表示较早时间的振动响应的背景振动信号，以及表示在获得监视信号时转子的振动响应的监视器振动信号。 通过从监视振动信号的一次谐波向量地减去背景振动信号的一次谐波，找出速度相关的一次谐波差信号。 然后确定差分信号的振幅与转子的旋转速度之间的关系，其中旋转速度远离振动共振发生的速度，其中差信号与转速的第四功率成正比的关系 表明在转子组件中存在轴向裂纹。 直方图技术提高了背景振动信号和监视器振动信号的信噪比。 转子组件在接近谐振速度的旋转速度下的振动响应可以与远离共振速度的速度的响应结合使用，以便确认转子裂纹的存在。

公开(公告)号：US08327752B2

公开(公告)日：2012-12-11

申请号：US11588952

申请日：2006-10-27

Applicant: Kripa Kiran Varanasi ,  Shorya Awtar ,  Frederick George Baily ,  Mark Edward Burnett ,  Farshad Ghasripoor ,  Imdad Imam ,  Norman Arnold Turnquist

Inventor： Kripa Kiran Varanasi ,  Shorya Awtar ,  Frederick George Baily ,  Mark Edward Burnett ,  Farshad Ghasripoor ,  Imdad Imam ,  Norman Arnold Turnquist

IPC: F16J9/16

CPC classification number: F16J15/445 ,  F15B15/1452 ,  F16J9/06 ,  F16J9/064

Abstract: Disclosed is an actuator that includes a cylinder having an input port, a piston disposed at least partially inside of the cylinder, and one or more piston rings disposed in a circumferential piston ring groove or grooves. The actuator also includes at least one spring, inserted into the circumferential piston ring groove adjacent to the one or more piston rings and a high pressure side of said piston ring. The spring preloads the one or more piston rings to seal between a low pressure face of the one or more piston rings and a low pressure face of the circumferential piston ring groove. The invention also includes a method for moving an adjustable seal in a radial direction using the piston-ring sealed actuator. The method includes moving the adjustable seal in an axial direction, breaking a primary axial contact between the adjustable seal and a primary sealing face.

Abstract translation: 公开了一种致动器，其包括具有输入端口的气缸，至少部分地设置在气缸内部的活塞以及设置在周向活塞环槽或凹槽中的一个或多个活塞环。 致动器还包括至少一个弹簧，其插入到与一个或多个活塞环相邻的圆周活塞环槽和所述活塞环的高压侧。 弹簧预加载一个或多个活塞环以在一个或多个活塞环的低压面和周向活塞环槽的低压面之间进行密封。 本发明还包括使用活塞环密封的致动器沿径向移动可调节密封件的方法。 该方法包括沿轴向方向移动可调节密封件，从而破坏可调节密封件与主密封面之间的主轴向接触。

公开(公告)号：US07976026B2

公开(公告)日：2011-07-12

申请号：US11796815

申请日：2007-04-30

Applicant: Nikhil Kumar Verma ,  Imdad Imam ,  Vineet Ghate ,  Sean Douglas Feeny ,  William Edward Adis ,  Shorya Awtar ,  Jason Paul Mortzheim

Inventor： Nikhil Kumar Verma ,  Imdad Imam ,  Vineet Ghate ,  Sean Douglas Feeny ,  William Edward Adis ,  Shorya Awtar ,  Jason Paul Mortzheim

IPC: F16J15/32

CPC classification number: F16J15/3292 ,  F01D11/00 ,  F05D2240/57 ,  F05D2300/505 ,  Y10T29/49826

Abstract: A method and seal assembly for a rotary machine including a rotary component and a stationary component is provided. The method includes providing a seal housing including a front plate and a back plate that is spaced from the front plate such that a cavity is defined between the front plate and the back plate. The method also includes coupling a plurality of flexible compliant plates to at least one of the seal housing and the stationary component such that the compliant plates are spaced from the front plate and the back plate within the cavity, and coupling at least one projection to at least one of the seal housing and the compliant plates such that the at least one projection facilitates reducing flow through at least one of a first axial gap and a second axial gap that are defined between the seal housing and the compliant plates.

Abstract translation: 提供一种用于包括旋转部件和固定部件的旋转机械的方法和密封组件。 该方法包括提供密封壳体，其包括与前板间隔开的前板和后板，使得在前板和后板之间限定空腔。 该方法还包括将多个柔性柔性板耦合到密封壳体和静止部件中的至少一个，使得柔性板与空腔内的前板和后板间隔开，并且将至少一个突起连接到 密封壳体和柔性板中的至少一个，使得至少一个突出部有助于减少通过限定在密封壳体和柔性板之间的第一轴向间隙和第二轴向间隙中的至少一个的流动。

公开(公告)号：US20090309311A1

公开(公告)日：2009-12-17

申请号：US11796815

申请日：2007-04-30

Applicant: Nikhil Kumar Verma ,  Imdad Imam ,  Vineet Ghate ,  Sean Douglas Feeny ,  William Edward Adis ,  Shorya Awtar ,  Jason Paul Mortzheim

Inventor： Nikhil Kumar Verma ,  Imdad Imam ,  Vineet Ghate ,  Sean Douglas Feeny ,  William Edward Adis ,  Shorya Awtar ,  Jason Paul Mortzheim

IPC: F16J15/44 ,  B23P11/00

CPC classification number: F16J15/3292 ,  F01D11/00 ,  F05D2240/57 ,  F05D2300/505 ,  Y10T29/49826

Abstract: A method and seal assembly for a rotary machine including a rotary component and a stationary component is provided. The method includes providing a seal housing including a front plate and a back plate that is spaced from the front plate such that a cavity is defined between the front plate and the back plate. The method also includes coupling a plurality of flexible compliant plates to at least one of the seal housing and the stationary component such that the compliant plates are spaced from the front plate and the back plate within the cavity, and coupling at least one projection to at least one of the seal housing and the compliant plates such that the at least one projection facilitates reducing flow through at least one of a first axial gap and a second axial gap that are defined between the seal housing and the compliant plates.

Abstract translation: 提供一种用于包括旋转部件和固定部件的旋转机械的方法和密封组件。 该方法包括提供密封壳体，其包括与前板间隔开的前板和后板，使得在前板和后板之间限定空腔。 该方法还包括将多个柔性柔性板耦合到密封壳体和静止部件中的至少一个，使得柔性板与空腔内的前板和后板间隔开，并且将至少一个突起连接到 密封壳体和柔性板中的至少一个，使得至少一个突出部有助于减少通过限定在密封壳体和柔性板之间的第一轴向间隙和第二轴向间隙中的至少一个的流动。

公开(公告)号：US20080098884A1

公开(公告)日：2008-05-01

申请号：US11588952

申请日：2006-10-27

Applicant: Kripa Kiran Varanasi ,  Shorya Awtar ,  Frederick George Baily ,  Mark Edward Burnett ,  Farshad Ghasripoor ,  Imdad Imam ,  Norman Arnold Turnquist

Inventor： Kripa Kiran Varanasi ,  Shorya Awtar ,  Frederick George Baily ,  Mark Edward Burnett ,  Farshad Ghasripoor ,  Imdad Imam ,  Norman Arnold Turnquist

IPC: F16J15/18

CPC classification number: F16J15/445 ,  F15B15/1452 ,  F16J9/06 ,  F16J9/064

Abstract: Disclosed is an actuator that includes a cylinder having an input port, a piston disposed at least partially inside of the cylinder, and one or more piston rings disposed in a circumferential piston ring groove or grooves. The actuator also includes at least one spring, inserted into the circumferential piston ring groove adjacent to the one or more piston rings and a high pressure side of said piston ring. The spring preloads the one or more piston rings to seal between a low pressure face of the one or more piston rings and a low pressure face of the circumferential piston ring groove. The invention also includes a method for moving an adjustable seal in a radial direction using the piston-ring sealed actuator. The method includes moving the adjustable seal in an axial direction, breaking a primary axial contact between the adjustable seal and a primary sealing face.

Abstract translation: 公开了一种致动器，其包括具有输入端口的气缸，至少部分地设置在气缸内部的活塞以及设置在周向活塞环槽或凹槽中的一个或多个活塞环。 致动器还包括至少一个弹簧，其插入到与一个或多个活塞环相邻的圆周活塞环槽和所述活塞环的高压侧。 弹簧预加载一个或多个活塞环以在一个或多个活塞环的低压面和周向活塞环槽的低压面之间进行密封。 本发明还包括使用活塞环密封的致动器沿径向移动可调节密封件的方法。 该方法包括沿轴向方向移动可调节密封件，从而破坏可调节密封件与主密封面之间的主轴向接触。

公开(公告)号：US06920794B2

公开(公告)日：2005-07-26

申请号：US10065346

申请日：2002-10-07

Applicant: Huageng Luo ,  Norman Arnold Turnquist ,  Imdad Imam

Inventor： Huageng Luo ,  Norman Arnold Turnquist ,  Imdad Imam

IPC: F16F15/00 ,  F16F15/02 ,  G05B5/01 ,  G05D19/02 ,  G01H1/00

CPC classification number: G05B5/01 ,  F16F15/005 ,  F16F15/02 ,  G05D19/02

Abstract: A vibration control system for a rotary machine having a rotor, includes a sensor disposed within the rotary machine for sensing vibration of the rotor, a vibration damping device disposed within the rotary machine for imparting a reaction force to the rotor, and a controller arranged in operable communication with the sensor and the vibration damping device. The controller is adapted to receive a sensor signal from the sensor and to send a control signal to the vibration damping device for damping the vibration of the rotor.

Abstract translation: 一种用于具有转子的旋转机械的振动控制系统，包括设置在旋转机器内用于感测转子振动的传感器，设置在旋转机械内的用于向转子施加反作用力的减振装置，以及布置在 与传感器和减振装置的可操作的通信。 控制器适于接收来自传感器的传感器信号，并将控制信号发送到减震装置，以阻尼转子的振动。

公开(公告)号：US5710533A

公开(公告)日：1998-01-20

申请号：US507130

申请日：1995-07-31

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

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

IPC: H01F27/33 ,  H01F15/00

CPC classification number: H01F27/33

Abstract: 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.

Abstract translation: 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。