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。

公开(公告)号：US20060237416A1

公开(公告)日：2006-10-26

申请号：US11093126

申请日：2005-03-29

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: H05B11/00 ,  H05B1/00 ,  H05B3/00

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。

公开(公告)号：US07123031B2

公开(公告)日：2006-10-17

申请号：US11018771

申请日：2004-12-20

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01R27/08 ,  G01N27/00

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.

公开(公告)号：US6094989A

公开(公告)日：2000-08-01

申请号：US138187

申请日：1998-08-21

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01N29/07 ,  G01N29/14 ,  G01N29/46 ,  G01N29/00

CPC classification number: G01N29/14 ,  G01N29/07 ,  G01N29/46 ,  G01N2291/015 ,  G01N2291/2693

Abstract: Non-synchronous vibrations in blades on a rotating wheel, such as a turbine wheel, are measured using Fourier analysis adjusted to correct for uneven sampling produced by a pair of probes spaced from each other about the wheel by a probe angle (PA) other than 180.degree.. The Fourier transform matrix is phase shifted by an amount which is a function of the PA which is other than 180.degree., and the harmonic in which the mode of non-synchronous vibration is expected to be found. A scaling factor in the form of an inverse correction factor is applied to the frequency spectra produced by the phase shifted Fourier transform matrix to generate an output representative of the frequency and amplitude of the true excitation frequency which can be presented on a display.

Abstract translation: 使用傅立叶分析来测量旋转轮上的叶片（例如涡轮机轮）中的非同步振动，以校正由围绕车轮相互间隔的一对探针产生的不均匀采样，除了除了 180度。 傅里叶变换矩阵相位移是除了180度以外的PA的函数的量以及期望发现非同步振动模式的谐波。 将逆校正因子形式的缩放因子应用于由相移傅立叶变换矩阵产生的频谱，以产生表示可以在显示器上呈现的真实激发频率的频率和幅度的输出。

公开(公告)号：US5033305A

公开(公告)日：1991-07-23

申请号：US462506

申请日：1990-01-08

Applicant: Paul F. Rozelle ,  Michael Twerdochlib

Inventor： Paul F. Rozelle ,  Michael Twerdochlib

IPC: G01H1/10 ,  G01H1/00 ,  G01M15/04 ,  G01M99/00 ,  G07C3/00

CPC classification number: G01M15/046 ,  G01H1/003 ,  G07C3/00 ,  F02D2200/1015

Abstract: The movement of a rotating part of a machine is monitored by deriving a signal representing the motion of the rotating part, at least temporarily storing the derived signal, and analyzing the stored signal, with temporary storage being performed only on portions of the signal derived during spaced time intervals during each revolution of the rotating part.

Abstract translation: 通过导出表示旋转部分的运动的信号来监测机器的旋转部分的运动，至少暂时存储导出的信号，并且分析所存储的信号，其中暂时存储仅在所导致的信号的部分上被执行 在旋转部件的每转期间间隔时间间隔。

公开(公告)号：US5031459A

公开(公告)日：1991-07-16

申请号：US349029

申请日：1989-05-08

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01B21/22 ,  F01D21/00 ,  G01H1/10

CPC classification number: G01H1/10

Abstract: A shaft torsion monitor comprises a plurality of sensors for sensing the angular position of various portions of the shaft under dynamic conditions and for producing sets of data representative of the sensed angular positions. A memory is provided for periodically storing one of the sets of data representative of the angular position of the various portions of the shaft in the absence of torsion. Circuitry is provided for subtracting the stored set of data from each of the other sets of data to eliminate the effects of noise. The resulting data is analyzed to determine the torsion experienced by the shaft.

Abstract translation: 轴扭转监视器包括多个传感器，用于在动态条件下感测轴的各个部分的角位置并且用于产生表示所感测的角位置的数据组。 提供存储器，用于在不存在扭转的情况下周期性地存储表示轴的各个部分的角位置的数据组之一。 提供电路，用于从每个其他数据集中减去存储的数据集，以消除噪声的影响。 分析得到的数据以确定轴经受的扭转。