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    Detecting broadside acoustic signals with a fiber optical distrubuted acoustic sensing (DAS) assembly
    4.
    发明授权
    Detecting broadside acoustic signals with a fiber optical distrubuted acoustic sensing (DAS) assembly 有权
    用纤维光学分散声学传感（DAS）组件检测宽侧声学信号

    公开(公告)号：US09494461B2

    公开(公告)日：2016-11-15

    申请号：US14365231

    申请日：2012-12-13

    申请人： SHELL OIL COMPANY ,  SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.

    发明人： Kees Hornman ,  Albena Alexandrova Mateeva ,  Jeremiah Glen Pearce ,  Jeffery Joseph Mestayer ,  William Birch ,  Jorge Louis Lopez ,  Johannis Josephus Den Boer ,  Boris Nikolaevich Kuvshinov

    IPC分类号： G01H9/00 ,  G01V1/22 ,  G01V1/40

    CPC分类号： G01H9/006 ,  G01H9/004 ,  G01V1/226 ,  G01V1/40

    摘要： A distributed fiber optic acoustic sensing system comprises an elongate body having an outer surface, an optical fiber disposed on the outer surface at a first predetermined wrap angle, and light transmitting and receiving means optically connected to the fiber for. The elongate body may include at least one substantially flat face, and/or a layer of swellable elastomer surrounding the body, and/or an outer elastomeric tube surrounding the elastomer layer. There may be at least one sensor pad disposed in the outer layer, the sensor pad comprising a stiffener and at least one longitudinal fiber affixed thereto or embedded therein. There may be a body of protective material surrounding the tube, which may have an outer surface that includes at least one substantially flat face and at least one sensor pad disposed in the body.

    摘要翻译： 分布式光纤声学感测系统包括具有外表面的细长主体，以第一预定包角设置在外表面上的光纤，以及光纤连接到光纤的光发射和接收装置。 细长主体可以包括至少一个基本平坦的表面，和/或围绕主体的可膨胀弹性体层，和/或围绕弹性体层的外部弹性体管。 可以在外层中设置至少一个传感器垫，传感器垫包括加强件和至少一个固定到其上的纵向纤维或嵌入其中。 可以存在围绕管的保护材料体，其可以具有包括至少一个基本上平坦的表面的外表面和设置在主体中的至少一个传感器垫。

    DEVICE FOR MEASURING VIBRATION AMPLITUDES OF THE BLADE TIPS IN A TURBOMACHINE
    8.
    发明申请
    DEVICE FOR MEASURING VIBRATION AMPLITUDES OF THE BLADE TIPS IN A TURBOMACHINE 有权
    用于测量涡轮机叶片中振动振幅的装置

    公开(公告)号：US20140356132A1

    公开(公告)日：2014-12-04

    申请号：US13888715

    申请日：2013-05-07

    申请人： SNECMA

    发明人： Andre LEROUX ,  Serge Del Arco ,  Olivier Follerot ,  Michel Herbault ,  Philippe Armand Hugbart ,  Fabien Pouchard ,  Etienne Tulie

    IPC分类号： G01M15/14 ,  G01N21/17 ,  F01D21/00

    CPC分类号： G01M15/14 ,  F01D21/003 ,  G01B11/14 ,  G01H1/006 ,  G01H9/006 ,  G01M7/00 ,  G01N21/1702 ,  G01N2021/1706 ,  G01N2201/08

    摘要： The invention relates to a device for measuring vibration amplitudes of the blade tips in a turbomachine, comprising a support mounted in an orifice of a casing of a turbomachine and wherein are housed two optical guides for the emission and reception of a light signal exiting inside the casing across from the tips of the blades of a turbine wheel. Each optical guide comprises an optical fibre connected by a mechanical connector to a needle of which the core is made of a material able to transmit a light signal and which is resistant to temperatures less than or equal to 1100° C. and which exits at its distal end in the casing across from the blade tips.

    摘要翻译： 本发明涉及一种用于测量涡轮机中的叶片尖端的振幅的装置，包括安装在涡轮机壳体的孔口中的支撑件，并且其中容纳有两个光导件，用于发射和接收从内部 从涡轮机叶片的叶片的尖端穿过。 每个光学引导件包括通过机械连接器连接到针的光纤，芯的芯由能够传输光信号的材料制成，并且其耐受低于或等于1100℃的温度，并且在其出口处 外壳中的远端从刀片尖端穿过。

    High bandwidth fiber optic vibration sensor
    10.
    发明申请
    High bandwidth fiber optic vibration sensor 有权
    高带宽光纤振动传感器

    公开(公告)号：US20080041162A1

    公开(公告)日：2008-02-21

    申请号：US11504506

    申请日：2006-08-15

    申请人： Michael Twerdochlib

    发明人： Michael Twerdochlib

    IPC分类号： G01H11/00

    CPC分类号： G01H9/006

    摘要： 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.

    摘要翻译： 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，并提供 基于第二信号和第三信号的组合，指示在机械（52）中发生振动幅度的值。