公开(公告)号：US5416430A

公开(公告)日：1995-05-16

申请号：US54572

申请日：1993-04-28

Applicant: Michael Twerdochlib ,  Robert L. Osborne

Inventor： Michael Twerdochlib ,  Robert L. Osborne

IPC: G01R31/12 ,  G01R31/34

CPC classification number: G01R31/343 ,  G01R31/12

Abstract: The present invention monitors RF emissions within a turbine generator. A coupling device provides a connection between preexisting thermal sensor leads and an RF monitor. Preexisting thermal sensor leads are connected to thermocouples and resistance temperature detectors during manufacture of the turbine generator. The RF monitor is used in the present invention to monitor RF emissions flowing in the thermal sensor leads thereby avoiding a need to retrofit RF sensors on the generator. The present invention also provides a capacitive coupling means between the thermal sensor leads and the RF monitor. The present invention also provides an inductive means to reduce interference from RF emissions having sources external to the generator.

Abstract translation: 本发明监测涡轮发电机内的RF发射。 耦合装置提供先前存在的热传感器引线和RF监视器之间的连接。 在涡轮发电机制造过程中，预先存在的热传感器引线连接到热电偶和电阻温度检测器。 在本发明中使用RF监视器来监测在热传感器引线中流动的RF辐射，从而避免需要改变发生器上的RF传感器。 本发明还提供了在热传感器引线和RF监视器之间的电容耦合装置。 本发明还提供一种用于减少具有发生器外部的源的RF发射的干扰的电感装置。

公开(公告)号：US4951500A

公开(公告)日：1990-08-28

申请号：US385753

申请日：1989-07-26

Applicant: Michael Twerdochlib ,  Robert L. Osborne ,  Paul F. Rozelle

Inventor： Michael Twerdochlib ,  Robert L. Osborne ,  Paul F. Rozelle

IPC: F01D21/00 ,  G01B7/14 ,  G01B7/28 ,  G01H1/00

CPC classification number: G01B7/285 ,  F01D21/003 ,  G01B7/14 ,  G01H1/006

Abstract: A method of determining the untwist of turbine blades under dynamic conditions is comprised of the steps of producing a first pair of blade passing event signals in response to a blade tip's movement past a pair of fixed sensors. The signals comprising the first signal pair are compared to one another to establish a first differential value. Another data point containing blade vibrational information is produced. The first differential value and the other data point are evaluated to discriminate between blade untwist and synchronous vibration. Based on the magnitude of the blade untwist, inferences can be drawn regarding the status of the turbine blade lashing wires.

Abstract translation: 在动态条件下确定涡轮叶片解捻的方法包括以下步骤：响应于叶片尖端的运动经过一对固定传感器产生第一对叶片通过事件信号。 将包括第一信号对的信号彼此进行比较以建立第一差分值。 产生了包含叶片振动信息的另一个数据点。 评估第一个微分值和另一个数据点，以区分刀片解捻和同步振动。 基于叶片解捻度的大小，可以得出关于涡轮机叶片绑扎丝的状态的推断。

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。

公开(公告)号：US08683866B2

公开(公告)日：2014-04-01

申请号：US13191711

申请日：2011-07-27

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01H11/00 ,  G01N29/00

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：US08645101B2

公开(公告)日：2014-02-04

申请号：US13024496

申请日：2011-02-10

Applicant: Benjamin T. Humphries ,  Evangelos V. Diatzikis ,  Michael Twerdochlib ,  James F. Lau ,  Edward D. Thompson

Inventor： Benjamin T. Humphries ,  Evangelos V. Diatzikis ,  Michael Twerdochlib ,  James F. Lau ,  Edward D. Thompson

IPC: G06F11/30

CPC classification number: G01H13/00

Abstract: A system and method for monitoring the condition of a vibration sensor in a system. Vibrations are received in the system at one or more vibration sensors. Sensor data is output by the vibration sensor(s). The sensor data includes data representative of the vibrations in the system and data representative of a natural frequency of the corresponding vibration sensor. The sensor data output from the vibration sensor(s) is monitored, and upon a change in the data representative of the natural frequency of a vibration sensor, that vibration sensor is flagged.

Abstract translation: 一种用于监测系统中的振动传感器的状态的系统和方法。 在一个或多个振动传感器的系统中接收振动。 传感器数据由振动传感器输出。 传感器数据包括表示系统中的振动的数据和表示相应的振动传感器的固有频率的数据。 监测从振动传感器输出的传感器数据，并且在代表振动传感器的固有频率的数据改变时，该振动传感器被标记。

公开(公告)号：US20130008180A1

公开(公告)日：2013-01-10

申请号：US13177717

申请日：2011-07-07

Applicant: Evangelos V. Diatzikis ,  Hans-Gerd Brummel ,  Michael Twerdochlib

Inventor： Evangelos V. Diatzikis ,  Hans-Gerd Brummel ,  Michael Twerdochlib

IPC: F02C7/00 ,  G01K11/32 ,  G01N21/88

CPC classification number: F01D21/003 ,  F05D2270/804 ,  F23M11/04 ,  F23R3/002 ,  F23R2900/00019 ,  G01M11/085

Abstract: A component sensing system for monitoring the condition of ceramic tiles in a combustion chamber of a gas turbine engine. The sensing system includes an optical fiber that is mounted to the component being monitored, for example, the ceramic tiles in the gas turbine combustion chamber. The optical fiber can be formed in any suitable orientation or configuration, such as a meandering or serpentine orientation. The fiber is optically coupled to a Brillouin signal analyzer that provides an optical pulse to the sensing section of the fiber and detects Brillouin backscattering from the fiber as the pulse travels along the fiber. The frequency of the Brillouin backscattering signal is monitored relative to the distance along the sensing section of the fiber. A rise in temperature at a location of the fiber shows up in the analyzer as an increase in frequency of the backscattered signal.

Abstract translation: 一种用于监测燃气涡轮发动机的燃烧室中的瓷砖状态的部件感测系统。 感测系统包括安装到被监测的部件的光纤，例如燃气轮机燃烧室中的陶瓷瓦。 光纤可以以任何合适的取向或构型形成，例如曲折或蛇形取向。 光纤光耦合到布里渊信号分析仪，其向光纤的感测部分提供光脉冲，并且随着脉冲沿着光纤行进，从光纤检测布里渊后向散射。 布里渊后向散射信号的频率相对于沿着光纤的感测部分的距离被监测。 随着反向散射信号频率的增加，光纤位置的温度上升在分析仪中出现。

公开(公告)号：US08192077B2

公开(公告)日：2012-06-05

申请号：US12574096

申请日：2009-10-06

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：US20110277535A1

公开(公告)日：2011-11-17

申请号：US13191711

申请日：2011-07-27

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01N29/00

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：US07775114B2

公开(公告)日：2010-08-17

申请号：US11861532

申请日：2007-09-26

Applicant: Michael Twerdochlib ,  John F. DeMartini

Inventor： Michael Twerdochlib ,  John F. DeMartini

IPC: G01N29/00

CPC classification number: G01H1/003

Abstract: A method of monitoring vibrations in a blade structure of a turbine including generating signals from a sensor located adjacent to a radial outer edge of the blade structure to sense passage of targets located on the blade structure. The sensor is mounted eccentrically and the signals are obtained with the sensor located at different angular positions. In a first aspect of the invention, the signals from the sensor are used to determine a target slope angle of a target on a first turbine blade during operation of the turbine. In a second aspect of the invention, the signals from the sensor are used to position the sensor in response to a sensed variation in the axial position of the target on the first turbine blade.

Abstract translation: 一种监测涡轮机叶片结构中的振动的方法，包括从位于叶片结构的径向外边缘附近的传感器产生信号，以感测位于叶片结构上的目标的通过。 传感器偏心安装，传感器位于不同角度位置时获得信号。 在本发明的第一方面，来自传感器的信号用于在涡轮机运行期间确定目标在第一涡轮叶片上的目标倾斜角。 在本发明的第二方面，来自传感器的信号用于响应于目标在第一涡轮叶片上的轴向位置的感测变化来定位传感器。

公开(公告)号：US07654145B2

公开(公告)日：2010-02-02

申请号：US11862752

申请日：2007-09-27

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01M13/00 ,  G01H17/00 ,  G01M19/00

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。