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：US09188021B2

公开(公告)日：2015-11-17

申请号：US14077571

申请日：2013-11-12

Applicant: Edward David Thompson ,  Michael Twerdochlib

Inventor： Edward David Thompson ,  Michael Twerdochlib

IPC: F01K13/02 ,  F01K7/06 ,  F01D21/14 ,  F01D25/04 ,  F01D25/06 ,  F01K7/04 ,  F01K7/14 ,  F01K7/24

CPC classification number: F01D21/14 ,  F01D5/26 ,  F01D25/04 ,  F01D25/06 ,  F01K7/04 ,  F01K7/14 ,  F01K7/22 ,  F01K7/24 ,  F01K13/02 ,  F02C9/00 ,  F05D2220/31 ,  F05D2260/80 ,  F05D2270/334 ,  F05D2270/803

Abstract: A blade vibration monitor backpressure limiting system (BVMBLS), that in addition to direct blade vibration and condenser backpressure monitoring utilizes other plural types of other parallel, real time monitored power plant operation state (OS) information that influences blade vibration. The system references previously stored information in an information storage device that associates respective types of monitored OS information with blade vibration. The BVMBLS determines in real time a likelihood of whether any of the monitored operation states, alone or in combination with other types of monitored operation states, is indicative of a turbine blade vibration safe operation (SO). The BVMBLS determination is utilized to increase or reduce power generation load incrementally so that power efficiency and maximum load is enhanced while turbine blade vibration is maintained in a safe operation state. The previously stored information is updated to new association information.

Abstract translation: 叶片振动监测器背压限制系统（BVMBLS）除了直接叶片振动和冷凝器背压监测之外，还利用影响叶片振动的其他多种类型的其他并行实时监测的发电厂运行状态（OS）信息。 该系统将先前存储的信息引用到信息存​​储设备中，该信息存储设备将各种监视的OS信息与刀片振动相关联。 BVMBLS实时确定是否单独或与其他类型的监视操作状态组合的任何监视的操作状态是否表示涡轮叶片振动安全操作（SO）的可能性。 BVMBLS确定用于增加或减少发电负载，从而提高功率效率和最大负载，同时涡轮叶片振动保持在安全运行状态。 先前存储的信息被更新为新的关联信息。

公开(公告)号：US20140060203A1

公开(公告)日：2014-03-06

申请号：US14076491

申请日：2013-11-11

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

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

IPC: G01F1/66

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：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。

公开(公告)号：US08008925B2

公开(公告)日：2011-08-30

申请号：US12174292

申请日：2008-07-16

Applicant: Michael Twerdochlib

Inventor： Michael Twerdochlib

IPC: G01R31/12 ,  H01H9/50

CPC classification number: G01R31/346 ,  G01R31/1272 ,  G01R31/343

Abstract: A marker pulse discriminator monitor that enables filtering of partial discharge pulses for monitoring the condition of a generator in a power plant system. The monitor detects partial discharge pulses emanating from the generator and includes a plurality of first modules connected to respective isophase buses adjacent to the generator. Each of the first modules generate a marker pulse in response to a partial discharge pulse. The monitor also includes an analyzer unit connected to the isophase buses adjacent to a step-up transformer. The analyzer unit receives each partial discharge pulse and each marker pulse and determines a differential value corresponding to a difference between a time of arrival of a partial discharge pulse and a time of arrival of a corresponding marker pulse to identify partial discharge pulses originating at the generator and to identify the isophase bus associated with the corresponding partial discharge pulse.

Abstract translation: 标记脉冲鉴别器监视器，其能够对部分放电脉冲进行滤波，以监视发电厂系统中发电机的状态。 监视器检测从发生器发出的局部放电脉冲，并且包括连接到与发生器相邻的相应同位体总线的多个第一模块。 每个第一模块响应于局部放电脉冲产生标记脉冲。 该监视器还包括一个与升压变压器相邻的同相母线连接的分析器单元。 分析器单元接收每个局部放电脉冲和每个标记脉冲，并且确定对应于部分放电脉冲的到达时间与相应标记脉冲的到达时间之间的差的差分值，以识别源自发生器的部分放电脉冲 并识别与相应的局部放电脉冲相关的同相母线。