公开(公告)号：US20130115050A1

公开(公告)日：2013-05-09

申请号：US13290297

申请日：2011-11-07

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: F01D25/00

CPC classification number: F01D21/14 ,  F01D5/26 ,  G01H1/003 ,  G01H1/006 ,  G01H9/004 ,  G01M13/028 ,  G06T7/0002 ,  G06T7/20

Abstract: Apparatus (12) to measure blade vibration in a gas turbine engine (8). An illumination source (20) generates a sequence of illumination bursts in a field of view capturing a passing rotating blade (10) of the gas turbine engine. An imager (22) generates image data including a series of images capturing views of the passing rotating blade. The images are exposed in response to respective illumination bursts. A controller (30) is configured to process the series of images to identify one or more vibration modes of the rotating blade.

Abstract translation: 用于测量燃气涡轮发动机（8）中的叶片振动的装置（12）。 照明源（20）在捕获燃气涡轮发动机的经过的旋转叶片（10）的视野中产生一系列照明脉冲串。 成像器（22）生成图像数据，其包括捕获经过的旋转叶片的视图的一系列图像。 响应于相应的照明脉冲，曝光图像。 控制器（30）被配置为处理该系列图像以识别旋转叶片的一个或多个振动模式。

公开(公告)号：US20130027030A1

公开(公告)日：2013-01-31

申请号：US13191547

申请日：2011-07-27

Applicant: Michael Twerdochlib ,  Erik Abromitis

Inventor： Michael Twerdochlib ,  Erik Abromitis

IPC: G01R33/02

CPC classification number: G01R33/0327 ,  H02K3/12 ,  H02K11/20

Abstract: A magnetic flux sensor for measuring the radial component of the magnetic flux impinging on a stator bar of a high voltage generator. The magnetic flux sensor includes a fiber Bragg grating formed in an optical fiber and enclosed within a magnetostrictive coating. The magnetostrictive coating responds to changes in magnetic flux by applying a strain on the fiber that changes the reflected wavelength of the Bragg grating that can be measured to provide a measurement of the flux. In one embodiment, one or more of the magnetic flux sensors is positioned directly within an insulating layer of the particular stator bar.

Abstract translation: 一种磁通量传感器，用于测量入射到高压发生器的定子线棒上的磁通的径向分量。 磁通量传感器包括形成在光纤中并封装在磁致伸缩涂层内的光纤布拉格光栅。 磁致伸缩涂层通过在纤维上施加应变来改变磁通量的变化，改变可测量的布拉格光栅的反射波长以提供通量的测量。 在一个实施例中，一个或多个磁通量传感器直接定位在特定定子线棒的绝缘层内。

公开(公告)号：US08096184B2

公开(公告)日：2012-01-17

申请号：US10881798

申请日：2004-06-30

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01H9/00

CPC classification number: G01H1/003 ,  G01N29/2418 ,  G01N2291/2693

Abstract: The claimed invention provides a blade vibration measuring system comprising a blade, a transmitter, a target with non parallel edges located on the blade shroud and a receiver. The present invention also provides a blade adapted for measuring blade vibration. Furthermore, the claimed invention provides a method for monitoring blade vibration.

Abstract translation: 所要求保护的发明提供了一种叶片振动测量系统，其包括叶片，发射器，具有位于叶片护罩上的非平行边缘的靶和接收器。 本发明还提供了一种用于测量叶片振动的叶片。 此外，要求保护的发明提供了一种用于监测叶片振动的方法。

公开(公告)号：US07861592B2

公开(公告)日：2011-01-04

申请号：US11711843

申请日：2007-02-27

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01N29/07

CPC classification number: G01H1/006 ,  F01D5/225

Abstract: A method for predicting a blade structure failure within a coupled blade structure including a plurality of blades supported for rotation on a rotor and a shroud structure coupling the blades. The method includes the steps of determining displacements of a plurality of predetermined circumferential locations on the shroud structure during rotation of the blade row, where the displacements are provided as a function of time relative to the periodic rotation of the shroud structure for time intervals that are integer multiples of rotor rotation. A signal characteristic related to vibrational mode and a nodal diameter of the shroud structure is derived based on the displacements of the circumferential locations on the shroud structure.

Abstract translation: 一种用于预测耦合的叶片结构内的叶片结构故障的方法，包括支撑在转子上的多个叶片和联接叶片的护罩结构。 该方法包括以下步骤：在叶片排的旋转期间确定护罩结构上的多个预定圆周位置的位移，其中相对于护罩结构的周期性旋转的时间作为时间的函数提供位移，时间间隔为 转子旋转的整数倍。 基于护罩结构上的周向位置的位移导出与振动模式和护罩结构的节点直径相关的信号特性。

公开(公告)号：US07632012B2

公开(公告)日：2009-12-15

申请号：US11217884

申请日：2005-09-01

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01J5/02

CPC classification number: G01J5/0003 ,  G01J5/524 ,  G01J5/602 ,  G01J2005/0074

Abstract: A method for measuring the differential emissivity between two sites on the surface of a body and the temperature of the two sites. The method includes a plurality of measurements of the infrared radiation arising from each of the two sites under a number of different conditions. Some of the measurements include irradiation by external infrared radiation at a known wavelength and intensity. The infrared radiation arising from each of the sites may include emitted radiation, reflected ambient radiation, and reflected external radiation. Additionally, the temperature determined using the method described can be used to calibrate infrared imaging devices used to inspect the entire body.

Abstract translation: 一种用于测量身体表面两个位置与两个部位的温度之间的差异发射率的方法。 该方法包括在多个不同条件下从两个位置中的每一个产生的红外辐射的多个测量。 一些测量包括以已知波长和强度的外部红外辐射照射。 从每个地点产生的红外辐射可能包括发射的辐射，反射的环境辐射和反射的外部辐射。 另外，使用所述方法确定的温度可用于校准用于检查整个身体的红外成像装置。

公开(公告)号：US07533572B2

公开(公告)日：2009-05-19

申请号：US11504506

申请日：2006-08-15

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01N29/04 ,  G01B9/02

CPC classification number: G01H9/006

Abstract: Apparatus and method for monitoring vibration levels in rotatable machinery (52). In one embodiment, a system (50) includes a source (66) for generating coherent radiation (70) and a first partially transmissive, partially reflective device (90) positioned to receive radiation (70) from the source (66) and transmit a part of the radiation there through. A second partially transmissive, partially reflective device (100) is mounted to the machinery (52), positioned to reflect a first signal (72) and transmit radiation (70) transmitted by the first device (90). A third device 104) is mounted to the machinery (52) and positioned to reflect radiation transmitted through the second device to provide a second signal (78). Circuitry (82, 86) is configured to generate an electrical signal based on a combination of the first and second signals (72, 78), and processing circuitry (114) provides a value indicative of vibration amplitude occurring in the machinery (52) based on the combination of the first and second signals. An embodiment of an associated method includes providing a first radiation signal (70) of a first frequency, deriving second and third radiation signals (78A, 78B) each having a time-varying Doppler shifting frequency relative to the first signal, and providing a value indicative of vibration amplitude occurring in the machinery (52) based on a combination of the second and third signals.

Abstract translation: 用于监测可旋转机械中的振动水平的装置和方法（52）。 在一个实施例中，系统（50）包括用于产生相干辐射（70）的源（66）和定位成从源（66）接收辐射（70）的第一部分透射的部分反射装置（90） 部分辐射通过。 第二部分透射的，部分反射的装置（100）安装到机械（52），定位成反射由第一装置（90）传输的第一信号（72）和透射辐射（70）。 第三装置104）安装到机械（52）并被定位成反射透过第二装置的辐射以提供第二信号（78）。 电路（82,86）被配置为基于第一和第二信号（72,78）的组合产生电信号，并且处理电路（114）提供指示在机器（52）中发生的振幅的值 关于第一和第二信号的组合。 相关方法的一个实施例包括提供第一频率的第一辐射信号（70），导出第二和第三辐射信号（78A，78B），每个辐射信号具有相对于第一信号的时变多普勒频移频率，并且提供值 指示基于第二和第三信号的组合在机械（52）中发生的振动幅度。

公开(公告)号：US20090084187A1

公开(公告)日：2009-04-02

申请号：US11862752

申请日：2007-09-27

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01H1/00

CPC classification number: G01H1/06 ,  G01H1/003

Abstract: A method of measuring vibration in a bladed rotor structure with a vibration monitor. The vibration monitor includes a sensor for sensing passage of the sensor targets on radially outer portions of the blade structure, and the sensor generates signals corresponding to target passing events. An excitation structure is provided including at least one air jet for providing an excitation force to the blade structure. The blade structure is rotated about an axis of rotation and the air jet is driven in a circular path about the axis of rotation at a different rotational speed to apply a non-synchronous excitation force to the blade structure.

Abstract translation: 用振动监测器测量叶片转子结构中的振动的方法。 振动监测器包括用于感测传感器目标在叶片结构的径向外部上的通过的传感器，并且传感器产生对应于目标通过事件的信号。 提供了一种激励结构，其包括用于向叶片结构提供激励力的至少一个空气喷射。 叶片结构围绕旋转轴线旋转，并且空气射流以不同旋转速度的旋转轴线以圆形路径驱动，以将不同步的激励力施加到叶片结构。

公开(公告)号：US20090078053A1

公开(公告)日：2009-03-26

申请号：US11861582

申请日：2007-09-26

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01H11/00

CPC classification number: G01H1/006

Abstract: A method and apparatus for monitoring vibrations in a blade structure of a turbine including generating signals from a probe located adjacent to a radial outer edge of the blade structure to provide signals corresponding to vibrations at predetermined locations along the tips of the blades. A leading edge of a blade tip is detected during a blade tracking operation, and a known location along the length of the blade tips is monitored during a vibration measurement operation. The measurement operation may be performed simultaneously with the tracking operation to provide measurements as the axial location of the blades change during transitional modes of operation of the turbine.

Abstract translation: 一种用于监测涡轮机叶片结构中的振动的方法和装置，包括从位于叶片结构的径向外边缘附近的探头产生信号，以提供对应于沿叶片尖端的预定位置的振动的信号。 在叶片跟踪操作期间检测叶片尖端的前缘，并且在振动测量操作期间监测沿叶片尖端的长度的已知位置。 测量操作可以与跟踪操作同时进行，以在叶片的轴向位置在涡轮机的过渡操作模式期间改变时提供测量值。

公开(公告)号：US20090078052A1

公开(公告)日：2009-03-26

申请号：US11923748

申请日：2007-10-25

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01H1/06

CPC classification number: G01H1/003 ,  G01H1/08

Abstract: A method of matching sensors in a multi-probe blade vibration monitor for a turbine. The method includes providing at least two probes mounted in a casing of the turbine adjacent to a rotating blade structure of the turbine. Targets are provided on radially outer portions of the blade structure. Each of the probes includes a sensor generating signals corresponding to target passing events, and a set of synchronous harmonics of the rotational speed of the rotor are produced for each sensor. The position of the sensors is adjusted such that the sets of harmonics of the sensors are substantially matched, indicating that the positions of the sensors are matched.

Abstract translation: 一种用于涡轮机的多探针叶片振动监测器中匹配传感器的方法。 该方法包括提供安装在涡轮机壳体中的至少两个探针，其与涡轮机的旋转叶片结构相邻。 靶设置在叶片结构的径向外部。 每个探头包括产生对应于目标通过事件的信号的传感器，并且为每个传感器产生一组转子的转速的同步谐波。 调整传感器的位置，使得传感器的谐波组合基本匹配，表明传感器的位置匹配。

公开(公告)号：US07230205B2

公开(公告)日：2007-06-12

申请号：US11093126

申请日：2005-03-29

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: H05B1/00

CPC classification number: H05B1/0213

Abstract: In some instances, ice can form on the surface of a compressor airfoil. If the ice dislodges, it can impact and damage other compressor components. Aspects of the invention relate to systems for detecting the presence of ice or water on a compressor vane during engine operation. A ceramic insulating coating can be deposited on a portion of the surface of the vane. A heater and a thermocouple can be provided near the outermost surface of the coating such that the thermocouple can sense heat from the heater. The heater and the thermocouple can be provided within the coating. The presence of water film and/or ice on the coating surface can be detected by taking a thermocouple measurement following a heater pulse. The presence of a water film or ice results in a delay in the temperature rise detected by the thermocouple.

Abstract translation: 在某些情况下，冰可以形成在压缩机翼面的表面上。 如果冰块移动，它可能会影响和损坏其他压缩机组件。 本发明的方面涉及用于在发动机操作期间检测压缩机叶片上的冰或水的存在的系统。 陶瓷绝缘涂层可以沉积在叶片表面的一部分上。 可以在涂层的最外表面附近提供加热器和热电偶，使得热电偶可以感测来自加热器的热量。 加热器和热电偶可以在涂层内提供。 可以通过在加热器脉冲之后进行热电偶测量来检测涂层表面上的水膜和/或冰的存在。 水膜或冰的存在导致热电偶检测到的温度上升延迟。