公开(公告)号：US4676665A

公开(公告)日：1987-06-30

申请号：US864670

申请日：1986-05-19

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01K1/02 ,  G01K11/02 ,  G01K1/12 ,  G01N29/00

CPC classification number: G01K1/024 ,  G01K11/02

Abstract: A liquid-filled tube placed next to a generator winding section provides an indication of an abnormal hot spot which may develop along the winding. The tube is filled with a liquid which vaporizes to form a vapor bubble at the hot spot location. Acoustic energy is projected through the liquid in the tube and is normally received at the distal end of the tube. Presence of a vapor bubble blocks the acoustic propagation and forms a reflective surface for the acoustic energy which then is utilized to calculate distance to the vapor bubble. With a known pressure versus temperature relationship, the pressure of the liquid is controlled such that the hot spot temperature may be determined.

Abstract translation: 放置在发电机绕组部分旁边的充满液体的管提供了可能沿着绕组发展的异常热点的指示。 该管充满液体，其在热点位置蒸发以形成蒸气泡。 声能通过管中的液体投射，并且通常被容纳在管的远端。 蒸汽气泡的存在阻止声传播，并形成声能的反射表面，然后该声能用于计算到蒸气泡的距离。 利用已知的压力对温度关系，控制液体的压力使得可以确定热点温度。

公开(公告)号：US09016991B2

公开(公告)日：2015-04-28

申请号：US13863473

申请日：2013-04-16

Applicant: Michael Twerdochlib ,  Edward David Thompson ,  Evangelos V. Diatzikis

Inventor： Michael Twerdochlib ,  Edward David Thompson ,  Evangelos V. Diatzikis

IPC: F16B31/02 ,  H02K1/16 ,  B23P19/06 ,  G01L5/24 ,  G01L1/24 ,  H02K11/00 ,  G01D5/353

CPC classification number: H02K1/16 ,  B23P19/067 ,  F16B31/028 ,  G01D5/35316 ,  G01L1/246 ,  G01L5/243 ,  H02K11/20

Abstract: A generator stator core through-bolt tensioning device that automatically tightens the nut on the through-bolts that hold together and compress laminate plates of the stator core in a high voltage generator. A controller receives a signal from a measuring device, such as a fiber Bragg grating that measures the strain on the bolt, and based on that signal determines whether the nut needs to be tightened. If the controller determines that tightening is necessary, it will cause the tensioning device to automatically tighten the nut while the generator is in service, and use the measuring device to provide feedback of the tensioning of the through-bolt to know when to stop the device from tightening the nut.

Abstract translation: 发电机定子铁心贯通螺栓张紧装置，自动拧紧固定在一起的螺栓上的螺母，并将高压发生器中的定子铁心的压板压缩。 控制器接收来自测量装置的信号，例如测量螺栓上的应变的光纤布拉格光栅，并且基于该信号确定螺母是否需要拧紧。 如果控制器确定需要紧固，则会在发电机使用时使张紧装置自动拧紧螺母，并使用测量装置提供贯穿螺栓张紧的反馈信息，以知道何时停止装置 拧紧螺母。

公开(公告)号：US20140306574A1

公开(公告)日：2014-10-16

申请号：US13863473

申请日：2013-04-16

Applicant: Michael Twerdochlib ,  Edward David Thompson ,  Evangelos V. Diatzikis

Inventor： Michael Twerdochlib ,  Edward David Thompson ,  Evangelos V. Diatzikis

IPC: H02K1/18 ,  H02K15/00

CPC classification number: H02K1/16 ,  B23P19/067 ,  F16B31/028 ,  G01D5/35316 ,  G01L1/246 ,  G01L5/243 ,  H02K11/20

Abstract: A generator stator core through-bolt tensioning device that automatically tightens the nut on the through-bolts that hold together and compress laminate plates of the stator core in a high voltage generator. A controller receives a signal from a measuring device, such as a fiber Bragg grating that measures the strain on the bolt, and based on that signal determines whether the nut needs to be tightened. If the controller determines that tightening is necessary, it will cause the tensioning device to automatically tighten the nut while the generator is in service, and use the measuring device to provide feedback of the tensioning of the through-bolt to know when to stop the device from tightening the nut.

Abstract translation: 发电机定子铁心贯通螺栓张紧装置，自动拧紧固定在一起的螺栓上的螺母，并将高压发生器中的定子铁心的压板压缩。 控制器接收来自测量装置的信号，例如测量螺栓上的应变的光纤布拉格光栅，并且基于该信号确定螺母是否需要拧紧。 如果控制器确定需要紧固，则会在发电机使用时使张紧装置自动拧紧螺母，并使用测量装置提供贯穿螺栓张紧的反馈信息，以知道何时停止装置 拧紧螺母。

公开(公告)号：US20140305223A1

公开(公告)日：2014-10-16

申请号：US13863426

申请日：2013-04-16

Applicant: Michael Twerdochlib ,  Edward David Thompson ,  Evangelos V. Diatzikis

Inventor： Michael Twerdochlib ,  Edward David Thompson ,  Evangelos V. Diatzikis

IPC: G01N3/08

CPC classification number: G01N3/08 ,  B23P19/067 ,  F16B31/028 ,  G01B11/18 ,  G01D5/35316 ,  G01L1/246 ,  G01L5/243 ,  G02B6/02076 ,  H02K1/16 ,  H02K11/20

Abstract: A generator stator core that includes a plurality of through-bolts extending through the stator core. Each through-bolt includes a threaded end on which is positioned a conical washer and a through-bolt nut, where the through-bolt nuts are tightened against the washers to compress laminate plates and hold the stator core together. The stator core further includes a through-bolt tension monitoring system including a fiber Bragg grating sensor mounted to one or more of the conical washers and being provided in at least one optical fiber. The monitoring system further includes a monitoring device providing an optical signal to each of the fiber Bragg grating sensors and receiving a reflected signal from the fiber Bragg grating sensors where the reflected signal provides an indication of strain on the washer to provide an indication of how tight the nut is on the through-bolt.

Abstract translation: 发电机定子铁心，其包括延伸穿过定子铁心的多个贯穿螺栓。 每个贯穿螺栓包括螺纹端，锥形垫圈和贯穿螺栓螺母在其上定位，其中贯穿螺栓螺母紧固垫圈以压缩层压板并将定子芯保持在一起。 定子芯还包括贯穿螺栓张力监测系统，该系统包括安装在一个或多个锥形垫圈上并设置在至少一根光纤中的光纤布拉格光栅传感器。 监测系统还包括监测装置，其向光纤布拉格光栅传感器中的每一个提供光信号，并且接收来自光纤布拉格光栅传感器的反射信号，其中反射信号提供垫圈上的应变指示以提供如何紧密的指示 螺母在螺栓上。

公开(公告)号：US08687175B2

公开(公告)日：2014-04-01

申请号：US13101350

申请日：2011-05-05

Applicant: Evangelos V. Diatzikis ,  Edward D. Thompson ,  Michael Twerdochlib

Inventor： Evangelos V. Diatzikis ,  Edward D. Thompson ,  Michael Twerdochlib

IPC: G01F1/28 ,  G02B6/43

CPC classification number: G01F1/661 ,  G01F1/28 ,  G01P5/02

Abstract: A method is provided for monitoring velocity of a fluid flow through a predetermined fluid flow space. A fiber optic conductor includes a flow measurement portion defining an elongated dimension extending across a portion of the fluid flow space. The fluid flow in the fluid flow space causes the measurement portion of the fiber optic conductor to flex in a direction transverse to the elongated dimension. Optical radiation is supplied to the fiber optic conductor, and optical radiation is received from the fiber optic conductor after the supplied optical radiation has passed through the measurement portion. The received optical radiation is analyzed to effect a determination of a flow velocity of the fluid flow.

Abstract translation: 提供了一种用于监测流过预定流体流动空间的流体流速的方法。 光纤导体包括限定延伸穿过流体流动空间的一部分的细长尺寸的流量测量部分。 流体流动空间中的流体流动导致光纤导体的测量部分沿横向于细长尺寸的方向弯曲。 向光纤导体提供光辐射，并且在所提供的光辐射已经通过测量部分之后从光纤导体接收光辐射。 分析所接收的光辐射以确定流体流动的流速。

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。