Method and apparatus for measuring a parameter of a high temperature fluid flowing within a pipe using an array of piezoelectric based flow sensors
    23.
    发明申请
    Method and apparatus for measuring a parameter of a high temperature fluid flowing within a pipe using an array of piezoelectric based flow sensors 有权
    用于使用基于压电的流量传感器的阵列测量在管内流动的高温流体的参数的方法和装置

    公开(公告)号:US20050044966A1

    公开(公告)日:2005-03-03

    申请号:US10909612

    申请日:2004-08-02

    CPC classification number: G01F1/662 G01F1/7082 G01F1/712 G01F1/74

    Abstract: A method, apparatus and system are provided to measure the process flow of a fluid or medium traveling in a pipe. The system and apparatus feature a standoff and piezoelectric-based sensor arrangement having a plurality of standoffs arranged on a pipe and a plurality of sensor bands, each arranged on a respective plurality of standoffs, each having at least one sensor made of piezoelectric material arranged thereon to detect unsteady pressure disturbances in the process flow in the pipe which in turn can be converted to the velocity of and/or speed of sound propagating within the pipe, and a cooling tube arranged in relation to the plurality of standoffs for actively cooling the sensor band; and further comprise a processing module for converting one or more sensor signals into a measurement containing information about the flow of the fluid or medium traveling in the pipe, as well as a pump and heat exchanger for processing the cooling fluid flowing through the cooling tube. The processing includes maintaining the cooling fluid at a desired operating temperature.

    Abstract translation: 提供了一种方法,装置和系统来测量在管道中行进的流体或介质的工艺流程。 该系统和装置具有一个支座和基于压电的传感器装置,其具有布置在管道上的多个支座和多个传感器带,每个传感器带布置在相应的多个支座上,每个支架具有至少一个由压电材料制成的传感器 以检测管道中的过程流动中的不稳定的压力扰动,其又可以转换成在管道内传播的声音的速度和/或速度,以及相对于多个支座布置的冷却管,用于主动冷却传感器 带; 并且还包括用于将一个或多个传感器信号转换成包含关于在管道中流动的流体或介质的流动的信息的测量的处理模块,以及用于处理流过冷却管的冷却流体的泵和热交换器。 该处理包括将冷却流体保持在期望的操作温度。

    Optical fiber bragg grating coating removal detection
    24.
    发明申请
    Optical fiber bragg grating coating removal detection 失效
    光纤布拉格光栅涂层去除检测

    公开(公告)号:US20050018945A1

    公开(公告)日:2005-01-27

    申请号:US10894153

    申请日:2004-07-19

    Abstract: An optical corrosion sensor employs an optical fiber Bragg grating 20 embedded within an optical fiber 18. The grating 20 has a coating 40 made of a material, such as aluminum, which corrodes or can otherwise be removed. The coating 40 exerts forces 46 radially inward around and along the grating 20 so as to cause the wavelength bandwidth of the grating reflectivity profile to become broader and to be shifted relative to its uncoated condition. Also, the forces on the grating 20 are reduced when the coating corrodes, thereby causing the wavelength bandwidth and shift of the reflectivity profile of the grating to narrow and to return to its uncoated condition.

    Abstract translation: 光学腐蚀传感器采用嵌入在光纤18内的光纤布拉格光栅20.光栅20具有由诸如铝的材料制成的涂层40,其被腐蚀或以其它方式被去除。 涂层40在光栅20周围沿径向向内施加力46,以使光栅反射率分布的波长带宽变得更宽并相对于其未涂覆的状态移动。 此外,当涂层腐蚀时,光栅20上的力减小,从而导致光栅的波长带宽和反射率分布的偏移变窄并返回到其未涂覆状态。

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