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。

公开(公告)号：US4987555A

公开(公告)日：1991-01-22

申请号：US277833

申请日：1988-11-30

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01B7/14

CPC classification number: G01B7/14

Abstract: A system for monitoring the clearance between a plurality of turbine blade shroud segments connected to form a turbine blade shroud and the stationary portion of the turbine comprises a sensor responsive to eddy currents generated in each of the shroud segments for producing input signals representative of the clearance between each shroud segment and the stationary portion of the turbine. Indicia are carried by the turbine blade shroud for causing the sensor to produce a known displacement signal. A processor is responsive to the input signals and the displacement signal for producing output signals indicative of the clearance between each shroud segment and the stationary portion of the turbine. The output signals have a predetermined relationship to the known displacement signal.

Abstract translation: 用于监测连接以形成涡轮机叶片护罩的多个涡轮机叶片护罩段与涡轮机的固定部分之间的间隙的系统包括响应于在每个护罩段中产生的涡流的传感器，用于产生代表间隙的输入信号 在每个护罩段和涡轮机的固定部分之间。 标记由涡轮机叶片护罩承载，以使传感器产生已知的位移信号。 处理器响应于输入信号和位移信号，用于产生指示每个护罩区段和涡轮机的静止部分之间的间隙的输出信号。 输出信号与已知的位移信号具有预定的关系。

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：US4901061A

公开(公告)日：1990-02-13

申请号：US196707

申请日：1988-05-20

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01K1/08 ,  G01K3/14

CPC classification number: G01K3/14 ,  G01K1/08

Abstract: Instrumentation and monitoring systems utilize, as differential temperature sensors, heated, split-well thermowells of duplex design, mounted to the sidewall of a pressure vessel and communicating through a penetration in the sidewall with the fluid state within the vessel. Each probe has at least one parallel axial bore therein, a related, selected pair of probes receiving respective heater and temperature sensing elements in the associated bores and together functioning as a differential temperature sensor producing distinguishable, differential temperature outputs representative of the presence of steam versus water. The systems monitor the differential temperature outputs of plural such sensors to produce alarm indications and perform verification and error checking of the sensor output indications. Duplex sensor embodiments permit toggling between different, selected such pairs of probes for on-line testing and verification of monitored conditions represented by the sensor output indications and of the operability of the elements and supporting circuits, under automatic and manual controls, and with on-line substitution of complementary elements in the event of element failure.

Abstract translation: 仪器和监测系统作为差分温度传感器使用双重设计的加热分裂井热套管，安装在压力容器的侧壁上，并通过容器内的流体状态穿过侧壁进行连通。 每个探针在其中具有至少一个平行的轴向孔，相关的选定的一对探头在相关联的孔中接收相应的加热器和温度感测元件，并且一起用作差分温度传感器，产生可区分的差示温度输出，代表蒸汽的存在与 水。 系统监控多个这种传感器的差分温度输出，以产生报警指示，并执行传感器输出指示的验证和错误检查。 双相传感器实施例允许在不同的所选择的这种探针对之间切换，用于在自动和手动控制下在线测试和验证由传感器输出指示表示的监测条件以及元件和支持电路的可操作性， 在元件故障的情况下补充元素的线代替。

公开(公告)号：US4875373A

公开(公告)日：1989-10-24

申请号：US223307

申请日：1988-07-25

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01H9/00 ,  G01B5/00 ,  G01D5/34

CPC classification number: G01D5/34 ,  G01B5/0014 ,  Y10S359/90

Abstract: A light beam altering grid (20), having a graded slit density pattern (22), is mounted on a temperature responsive support structure (23) to traverse a light beam (28). The slit density (slit per unit length) of the grid (20) is greater at one end of the grid (20) and gradually reduces towards the opposite end of the grid (20). The grid (20) is disposed on a thermally responsive support (23) such as a bimetallic cantilever (23). The thermally responsive support (23) operates to bend by an amount dependent upon the temperature of the environment in which it operates. In this manner, the grid (20) disposed on the thermally responsive support (23) is positioned in dependence upon the environmental temperature. The grid (20) may be arranged, for example, such that at higher environmental temperatures, when the natural frequency of the support (23) is reduced, the grid (20) will be positioned such that the change in density of slit graduations intersecting the light beam (28) compensates for change in the vibration amplification factor of the bimetalic cantilever (23) caused by the elevated environmental temperature.

Abstract translation: 具有分级狭缝密度图案（22）的光束改变格栅（20）安装在温度响应支撑结构（23）上以穿过光束（28）。 格栅（20）的狭缝密度（每单位长度的狭缝）在网格（20）的一端较大，并朝向网格（20）的相对端逐渐减小。 栅格（20）设置在诸如双金属悬臂（23）的热响应支撑件（23）上。 热响应支架（23）的作用是弯曲一定量，取决于其工作环境的温度。 以这种方式，设置在热响应支撑件（23）上的格栅（20）根据环境温度定位。 格栅（20）可以例如布置成使得在较高的环境温度下，当支撑件（23）的固有频率减小时，栅格（20）将被定位成使得狭缝刻度的密度变化相交 光束（28）补偿由环境温度升高引起的双金属悬臂（23）的振动放大系数的变化。

公开(公告)号：US4870859A

公开(公告)日：1989-10-03

申请号：US160421

申请日：1988-02-25

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: F16K7/10 ,  G01F5/00 ,  G05D7/06

CPC classification number: G01F5/00

Abstract: A method and apparatus for controlling the operation of a normally open bypass valve in a steam turbine air inleakage exhaust vent pipe. The valve is used to bypass a flowmeter connected in a bypass pipe parallel with the valve. The flowmeter provides signals indicative of bypassed flow. The method and apparatus compares the signals from the flowmeter to a reference signal corresponding to a first predetermined flow rate and generates a valve closure signal if the flow through the flowmeter is less than the predetermined flow rate. If the valve is closed, the signals from the flowmeter are used to display the actual air inleakage exhaust rate. If the flow exceeds a second predetermined value, a signal is generated to open the valve for bypassing the exhaust through the valve around the flowmeter. During the second mode of operation, the flowmeter indicates only approximate inleakage exhaust flow rate. If the flow drops below the first predetermined value, the valve is again closed and the flow rate is measured by the flowmeter.

Abstract translation: 一种用于控制蒸汽轮机空气泄漏排气管中的常开旁通阀的操作的方法和装置。 该阀用于旁路与阀并联的旁通管中连接的流量计。 流量计提供指示旁路流量的信号。 该方法和装置将来自流量计的信号与对应于第一预定流量的参考信号进行比较，并且如果通过流量计的流量小于预定流量，则产生阀关闭信号。 如果阀门关闭，来自流量计的信号用于显示实际的空气泄漏排放率。 如果流量超过第二预定值，则产生一个信号来打开阀门，以绕过流量计周围的阀旁路排气口。 在第二种操作模式下，流量计仅表示近似的泄漏排放流量。 如果流量低于第一预定值，则阀再次关闭，流量由流量计测量。

公开(公告)号：US4833453A

公开(公告)日：1989-05-23

申请号：US152273

申请日：1988-02-04

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01M13/00 ,  F16K37/00 ,  G01N29/14 ,  G01V1/00

CPC classification number: G01N29/14 ,  F16K37/0083 ,  G01V1/001 ,  Y10T137/8242

Abstract: A method and device for monitoring the operation of a component which is located in a sealed enclosure and is movable into a selected operating position in response to an activating signal uses the steps of: generating a short-duration acoustic signal in the enclosure in response to the movement of the component into the selected operating position; sensing the acoustic signal at the exterior of the sealed enclosure; and determining the time relationship between the activating signal and the acoustic signal. The acoustic signal is generated by an element which is carried by or moveable with the component and which generates the acoustic signal by striking an interior surface of the enclosure when the component moves into the selected operating position.

Abstract translation: 一种用于监测位于密封外壳中并可响应于激活信号而移动到选定操作位置的部件的操作的方法和装置，其特征在于，响应于下述步骤，在外壳中产生短持续时间的声信号 组件移动到所选择的操作位置; 感测密封外壳外部的声信号; 以及确定激活信号和声信号之间的时间关系。 声信号由元件产生，该元件由元件承载或可移动，并且当元件移动到所选择的操作位置时通过撞击外壳的内表面来产生声信号。

公开(公告)号：US08151647B2

公开(公告)日：2012-04-10

申请号：US12360909

申请日：2009-01-28

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01H11/00

CPC classification number: G01H1/006

Abstract: A method and apparatus for monitoring blade vibrations in a turbine engine having blade tip target portions associated with blades. An illumination conduit including a plurality of optical fibers conveys light from a light source to a transmission end of the optical fibers where the light is focused to define an axially elongated projected image. The blade tip target portions pass through the projected image and reflect light to a receptor array defined by receptor ends of a plurality of optical fibers forming an imaging conduit for conveying the reflected light to a sensor array. An imaging end of the imaging conduit radiates an image onto the sensor array that is identical to the reflected light image received at the receptor array to track tangential and axial movement of a predetermined point on the target portion.

Abstract translation: 一种用于监测涡轮发动机中的叶片振动的方法和装置，其具有与叶片相关联的叶片尖端目标部分。 包括多个光纤的照明导管将来自光源的光传输到光纤的透射端，在该光纤的发射端处聚焦以限定轴向细长的投影图像。 叶片尖端目标部分穿过投影图像并将光反射到由形成用于将反射光传送到传感器阵列的成像导管的多个光纤的受体端限定的受体阵列。 成像管道的成像端将传感器阵列上的图像辐射到与在受体阵列处接收的反射光图像相同的图像，以跟踪目标部分上的预定点的切向和轴向移动。

公开(公告)号：US08098072B2

公开(公告)日：2012-01-17

申请号：US12360923

申请日：2009-01-28

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01R31/02 ,  H01H9/50

CPC classification number: G01R31/1272

Abstract: A partial discharge coupler for detecting partial discharges in a conductor includes a frequency dependent network, a differential amplifier and a frequency selective coupling component. The frequency dependent network includes a first filter component, a fuse component and a load component, typically coupled together in series with reference to a first ground. The first filter component filters the high voltage, low frequency alternating current signal carried by the conductor from the load component and passes high frequency partial discharge pulse signals to the load component. The frequency selective coupling component couples in series between the differential amplifier and the load component. The output of the differential amplifier is configured to provide an output that is isolated from the ground connection for communicating detected partial discharge signals to partial discharge test equipment.

Abstract translation: 用于检测导体中部分放电的局部放电耦合器包括频率相关网络，差分放大器和频率选择耦合部件。 频率依赖网络包括第一滤波器部件，熔丝部件和负载部件，通常以参考第一接地串联连接在一起。 第一滤波器组件对来自负载组件的导体承载的高电压，低频交流信号进行滤波，并将高频部分放电脉冲信号传递到负载组件。 频率选择耦合元件串联耦合在差分放大器和负载元件之间。 差分放大器的输出被配置为提供与接地连接隔离的输出，用于将检测到的局部放电信号传送到局部放电测试设备。