公开(公告)号：US07326917B2

公开(公告)日：2008-02-05

申请号：US11472934

申请日：2006-06-22

Applicant: Evangelos V. Diatzikis ,  Michael Twerdochlib ,  Mehrzad Tartibi

Inventor： Evangelos V. Diatzikis ,  Michael Twerdochlib ,  Mehrzad Tartibi

IPC: G02B6/00

CPC classification number: G01M13/04 ,  G01H9/004

Abstract: A wear determination device for determining vibration in a turbine engine component to reduce wear in a turbine engine. The wear determination device may be capable of measuring vibrations in a turbine engine component. The vibration measurement may be used to determine vibrations in a turbine engine to identify wear locations and sources of wear. The wear determination device may be configured such that multiple locations in a turbine engine may be monitored on a single turbine engine by moving the wear determination device from location to location.

Abstract translation: 一种用于确定涡轮发动机部件中的振动以减少涡轮发动机中的磨损的磨损确定装置。 磨损确定装置可以能够测量涡轮发动机部件中的振动。 振动测量可用于确定涡轮发动机中的振动以识别磨损位置和磨损来源。 磨损确定装置可以被配置为使得可以在单个涡轮发动机上通过将磨损确定装置从位置移动到位置来监测涡轮发动机中的多个位置。

公开(公告)号：US20070047615A1

公开(公告)日：2007-03-01

申请号：US11217884

申请日：2005-09-01

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01J5/00

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：US20060132149A1

公开(公告)日：2006-06-22

申请号：US11018771

申请日：2004-12-20

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01R27/08

CPC classification number: G01B7/18 ,  G01N2203/0664

Abstract: Aspects of the invention relate to a system for assessing the condition of a thermal barrier coating on a turbine vane during engine operation. According to embodiments of the invention, one or more wires can be passed along the airfoil portion of the vane. The wires can extend over, within, or beneath the thermal coating. An electrical current can be passed along the wires, and electrical resistance can be measured across the wires. Thus, if a portion of the thermal coating becomes damaged, then the wires located in that area may break. A disconnect in the wires can lead to an increase in resistance across the wires, which can alert an operator to a problem. Some assessment systems can provide a general indication of the magnitude of damage and whether the damage is spreading.

Abstract translation: 本发明的方面涉及一种用于在发动机操作期间评估涡轮叶片上的热障涂层的状况的系统。 根据本发明的实施例，可以沿叶片的翼型部分通过一根或多根线。 电线可以在热涂层之上，内部或之下延伸。 可以沿着导线传递电流，并且可以跨导线测量电阻。 因此，如果热涂层的一部分损坏，那么位于该区域中的电线可能会断裂。 电线断开可导致电线上的电阻增加，这可能会导致操作员出现问题。 一些评估系统可以提供破坏程度的一般性指标，以及损害是否扩散。

公开(公告)号：US20050218887A1

公开(公告)日：2005-10-06

申请号：US11140655

申请日：2005-05-27

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: F01D21/00 ,  G01B7/14 ,  H01F5/00

CPC classification number: F01D21/003 ,  F05D2270/305 ,  G01B7/14

Abstract: A measurement device for measuring the wear of turbo-machine components to reduce the likelihood of component failure while a turbine-machine is at load. The measurement device is capable of measuring and calculating a distance between surfaces while the turbo-machine is at load. The distance may be compared with a measurement taken of the same location at another time to determine wear of a surface remote from the location of the measurement. The measurement device may be configured such that multiple measurements may be made on a single turbine engine by moving the measurement device from location to location.

Abstract translation: 一种用于测量涡轮机组件磨损的测量装置，以减少在涡轮机处于负载状态时部件故障的可能性。 测量装置能够在涡轮机处于负载状态时测量和计算表面之间的距离。 该距离可以与在另一时间对同一位置进行的测量进行比较，以确定远离测量位置的表面的磨损。 测量装置可以被配置为使得可以通过将测量装置从位置移动到位置而在单个涡轮发动机上进行多次测量。

公开(公告)号：US06949922B2

公开(公告)日：2005-09-27

申请号：US10320791

申请日：2002-12-16

Applicant: Michael Twerdochlib ,  David Bateman

Inventor： Michael Twerdochlib ,  David Bateman

IPC: F01D21/00 ,  G01B7/14 ,  H01F5/00

CPC classification number: G01B7/14 ,  F01D21/003 ,  F05D2270/305

Abstract: A system (90) for measuring the gap (16) between a rotating blade (14) and a stationary component (12) of a turbo-machine, including an eddy current coil (30) and an eddy current tester (91). The eddy current tester may excite the coil in a pulsed eddy current testing mode. The coil is positioned in a stationary portion (12) of a turbo-machine traversed by a rotating blade and the eddy current tester is coupled to the eddy current coil to provide an indication responsive to a distance between the blade and the stationary portion as the blade traverses the position. The coil may be mounted in a frangible ceramic pill (70) movably disposed in a housing (74). The coil is positioned near the turbine blade, the coil is excited with a voltage step function (120), and the response (122) of the coil to the step function is detected and processed to determine the proximity of the blade.

Abstract translation: 一种用于测量包括涡流线圈（30）和涡流测试器（91）的涡轮机的旋转叶片（14）和固定部件（12）之间的间隙（16）的系统（90）。 涡流测试仪可以以脉冲涡流测试模式激励线圈。 线圈定位在由旋转叶片横穿的涡轮机的静止部分（12）中，并且涡流测试器耦合到涡流线圈以提供响应于叶片和固定部分之间的距离的指示，因为 刀片穿过位置。 线圈可以安装在可移动地设置在壳体（74）中的易碎陶瓷片（70）中。 线圈位于涡轮机叶片附近，用电压阶跃函数（120）激励线圈，并检测并处理线圈对步进功能的响应（122）以确定叶片的接近度。

公开(公告)号：US06895131B1

公开(公告)日：2005-05-17

申请号：US10729197

申请日：2003-12-05

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G02B6/00 ,  G02B6/26

CPC classification number: G01D11/245

Abstract: The present invention provides a configuration where all optical parts of a monitoring system are contained within a seal and within the generator itself. Non-optical preamplifier functions may also be placed within the seal. In this configuration there is an electrical rather than optical feed-through at the generator wall, which is hermetically sealed, unlike a fiber optic feed-through. The fiber optic light source and detector for each sensor is located in the seal on the generator side of the hermetic electrical feed-through. Electrical power and the sensor's converted electrical vibration signals pass through the electrical feed-through to preamplifier circuitry on the outside of the seal where direct electrical connection is then made to a main chassis unit.

Abstract translation: 本发明提供了一种配置，其中监控系统的所有光学部件都包含在密封件内并且在发电机本身内。 非光学前置放大器功能也可以放置在密封件内。 在这种配置中，不像光纤馈通不同，在发生器壁上存在电气而不是光学馈通，其被气密地密封。 每个传感器的光纤光源和检测器位于密封电气馈电发生器侧的密封件中。 电力和传感器转换的电振动信号通过电气馈通到密封件外部的前置放大器电路，然后直接电连接到主机架单元。

公开(公告)号：US5865598A

公开(公告)日：1999-02-02

申请号：US886877

申请日：1997-07-02

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01K11/10 ,  F01B25/26 ,  F03B11/00 ,  G01N17/00

CPC classification number: G01K11/10

Abstract: This invention includes a detection system that can determine if a turbine component, such as a turbine vane or blade, has exceeded a critical temperature, such as a melting point, along any point along the entire surface of the vane or blade. This system can be employed in a conventional combustion turbine having a compressor, a combustor and a turbine section. Included within this system is a chemical coating disposed along the entire interior surface of a vane or blade and a closed loop cooling system that circulates a coolant through the interior of the vane or blade. If the temperature of the vane or blade exceeds a critical temperature, the chemical coating will be expelled from the vane or blade into the coolant. Since while traversing the closed loop cooling system the coolant passes through a detector, the presence of the chemical coating in the coolant will be sensed by the system. If the chemical coating is detected, this indicates that the vane or blade has exceeded a critical temperature.

Abstract translation: 本发明包括一种检测系统，其可以沿着沿着叶片或叶片的整个表面的任何点确定诸如涡轮机叶片或叶片的涡轮机部件是否已经超过临界温度，例如熔点。 该系统可用于具有压缩机，燃烧器和涡轮机部分的传统燃气轮机。 在该系统中包括沿着叶片或叶片的整个内表面设置的化学涂层和使冷却剂循环通过叶片或叶片的内部的闭环冷却系统。 如果叶片或叶片的温度超过临界温度，化学涂层将从叶片或叶片排出到冷却液中。 由于在穿过闭环冷却系统时，冷却剂通过检测器，因此冷却液中的化学涂层的存在将被系统感测到。 如果检测到化学涂层，则表明叶片或叶片已超过临界温度。

公开(公告)号：US5134378A

公开(公告)日：1992-07-28

申请号：US666316

申请日：1991-03-08

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01R31/34

CPC classification number: G01R31/34

Abstract: Both a system and method is provided for detecting faults in the insulating interface disposed between the shaft of a generator, and the bearings and seals that rotatably support it that generally comprises a transformer for selectively inducing an alternating electric potential into the shaft while the shaft is stationary, and a voltage meter for detecting whether the transformer-induced voltage is transmitted across the insulating interfaces. The number of wire windings used in the transformer of the system is preferably chosen so that the ac voltage induced in the shaft has substantially the same characteristics as the ac voltage induced by dissymmetry currents when the shaft is rotated by the turbines which drive the electric generator. The system of the invention is capable of not only detecting the existence of an insulation failure, but also its exact location so that only the defective portion of the insulation need be repaired.

公开(公告)号：US5032826A

公开(公告)日：1991-07-16

申请号：US368102

申请日：1989-06-19

Applicant: Robert C. Miller ,  Michael Twerdochlib

Inventor： Robert C. Miller ,  Michael Twerdochlib

IPC: G01R31/34

CPC classification number: G01R31/34

Abstract: The present invention is a monitor that detects generator core 12 hot spots where the insulation between ferromagnetic sheets is breaking down by monitoring rotor 10 shaft voltage. The difference between the differential shaft voltage at each end of the rotor 14 produces a voltage signal that changes as the core 12 malfunctions. By comparing signal samples over time, core failure can be detected. Spring loaded rotor shaft brushes 20 and 22 connected to differential isolation amplifiers 24 and 26 obtain the voltage between ends 16 and 18 of the rotating shaft and nearby frame, and a differential amplifier 28 produces the difference between the shaft end differential voltages which is the shaft dissymmetry voltage. An analog-to-digital converter 30 produces digital values of the dissymmetry voltage which can be converted into a voltage frequency spectrum by a Fourier Transform routine executed by a computer 32 or analyzed directly. The computer 32 monitors the spectrum or time domain signal over time for changes and produces an alarm when the changes exceed a threshold. Bandpass filters 34 and a simple threshold comparison routine or analog threshold devices can substitute for the FFT routine.

Abstract translation: 本发明是通过监测转子10轴电压来检测发电机铁芯12的热点，其中铁磁性薄片之间的绝缘被分解。 转子14的每端的差动轴电压之间的差产生随着铁心12发生故障而变化的电压信号。 通过随时间比较信号样本，可以检测到核心故障。 连接到差分隔离放大器24和26的弹簧加载的转子轴电刷20和22获得旋转轴和附近框架的端部16和18之间的电压，并且差分放大器28产生作为轴的轴端差分电压之间的差 不对称电压。 模拟 - 数字转换器30产生不对称电压的数字值，其可以通过由计算机32执行的傅里叶变换程序转换成电压频谱或直接分析。 计算机32随时间监视频谱或时域信号以进行改变，并且当改变超过阈值时产生警报。 带通滤波器34和简单的阈值比较程序或模拟阈值装置可替代FFT程序。

公开(公告)号：US4851949A

公开(公告)日：1989-07-25

申请号：US205695

申请日：1988-06-13

Applicant: Thomas A. Lemak ,  Robert L. Osborne ,  Michael Twerdochlib

Inventor： Thomas A. Lemak ,  Robert L. Osborne ,  Michael Twerdochlib

IPC: H02K11/00 ,  H02H3/14

CPC classification number: H02H3/14

Abstract: In an active shaft ground system for maintaining a rotating shaft (4) of a machine substantially at ground potential, which system includes a circuit coupled to the shaft (4) for monitoring the voltage on the shaft (4) relative to ground and a brush (6) coupled to the circuit and contacting the shaft (4) for conducting to the shaft (4) a compensating current having an amplitude and polarity adjusted for maintaining the shaft voltage substantially at ground potential, there is provided shaft condition detection circuitry (18,20,24,26,28,34,36) coupled to the circuit for monitoring the voltage on the shaft (4) relative to ground and the current flowing between the brush (6) and the shaft (4) and for producing a fault indication when the voltage on the shaft (4) relative to ground is outside of a selected range at the same time that the current flowing through the brush (6) is substantially equal to zero. The detection circuitry permits reliable monitoring of brush bounce and distinguishes between that condition and brush rub.

Abstract translation: 在主动轴接地系统中，用于维持基本上处于地电位的机器的旋转轴（4），该系统包括耦合到轴（4）的电路，用于监测相对于地面的轴（4）上的电压和刷 （6），其联接到所述电路并且接触所述轴（4），用于传导到所述轴（4），具有调整的振幅和极性的补偿电流，用于将所述轴电压基本上保持在接地电位，所述轴状态检测电路（18） ，20,24,26,28,34,36），其耦合到所述电路，用于监测所述轴（4）相对于地面的电压和在所述电刷（6）和所述轴（4）之间流动的电流，并且用于产生 当轴（4）相对于地面上的电压在流过刷（6）的电流基本上等于零时的同时超出选定范围的故障指示。 检测电路允许可靠地监测刷反弹，并区分该状况和刷擦。