公开(公告)号：US09651415B2

公开(公告)日：2017-05-16

申请号：US14226961

申请日：2014-03-27

申请人： Limin Song ,  Yibing Zhang

发明人： Limin Song ,  Yibing Zhang

IPC分类号： G01H11/00 ,  G01H9/00 ,  G01K11/32

CPC分类号： G01H9/004 ,  G01K11/3206

摘要： Systems and methods for detecting an operational condition of a tray of a distillation column with a sensing cable including an optical fiber sensor array operatively coupled to an optical signal interrogator. An output of the sensing cable corresponding to at least one sensor location on the optical fiber sensor array is monitored. The output of the sensing cable is classified as one of a predetermined set of classifications including at least a stable condition classification and a unstable condition classification determined based upon the output relative to a predetermined threshold. A signal is generated when the output of the sensing cable is classified as the unstable condition classification.

公开(公告)号：US20140294041A1

公开(公告)日：2014-10-02

申请号：US14226997

申请日：2014-03-27

申请人： Yibing Zhang ,  Limin Song ,  Geoff Keiser ,  Michael L. Hergenrother ,  Berne K. Stober ,  Patricia H. Kalamaras ,  Benjamin S. Umansky

发明人： Yibing Zhang ,  Limin Song ,  Geoff Keiser ,  Michael L. Hergenrother ,  Berne K. Stober ,  Patricia H. Kalamaras ,  Benjamin S. Umansky

IPC分类号： G01N25/00 ,  G01F1/684

CPC分类号： G01N25/18 ,  G01F1/661 ,  G01F1/684 ,  G01F1/6884 ,  G01F1/74 ,  G01K11/3206 ,  G01N25/00

摘要： Systems and methods for determining the flow distribution of a fluid through a component with a sensing cable including an optical fiber sensor array aligned with a heating element disposed in the component. An excitation source is configured to propagate at least one heat pulse through the heating element along at least a portion of the sensing cable to affect an exchange of thermal energy between the heating element and the fluid exposed to the sensing cable. An optical signal is adapted to receive a signal from each of a plurality of sensor locations and measure a temperature profile corresponding to the heat pulse at the sensor locations. A control unit is configured to determine a flow of the fluid by determining one or more properties of the fluid exposed to the sensing cable at each of the plurality of sensor locations based on the temperature profile corresponding thereto. The present invention can be effective in accurate and high spatial resolution of flow distributions through vessel components, such as a particulate bed (such as a reactor catalyst bed), a wash bed including packing material, an absorbent bed, a structured bed, a filter, or the like.

摘要翻译： 用于通过传感电缆确定流体通过部件的流动分布的系统和方法，所述传感电缆包括与设置在所述部件中的加热元件对准的光纤传感器阵列。 激励源被配置为沿着感测电缆的至少一部分传播至少一个热脉冲通过加热元件，以影响加热元件和暴露于感测电缆的流体之间的热能交换。 光信号适于接收来自多个传感器位置中的每一个的信号，并且测量对应于传感器位置处的加热脉冲的温度分布。 控制单元被配置为基于与其对应的温度分布，通过确定在多个传感器位置中的每一个处暴露于感测电缆的流体的一个或多个属性来确定流体的流动。 本发明可以有效地准确和高空间地分辨通过容器部件的流动分布，例如颗粒床（例如反应器催化剂床），包括填充材料的洗涤床，吸收床，结构化床，过滤器 ，等等。

公开(公告)号：US09500554B2

公开(公告)日：2016-11-22

申请号：US14226978

申请日：2014-03-27

申请人： Mohan G. Kulkarni ,  Yibing Zhang

发明人： Mohan G. Kulkarni ,  Yibing Zhang

IPC分类号： G01M3/28 ,  G01M3/00 ,  G01M3/16 ,  G01M3/38

CPC分类号： G01M3/002 ,  G01M3/165 ,  G01M3/38

摘要： System and method for detecting a leak in a pipeline with a sensing cable including an optical fiber sensor array aligned with a heating element. At least one heat pulse is propagated through the heating element along at least a portion of the sensing cable to affect an exchange of thermal energy between the heating element and fluid exposed to the sensing cable. A temperature profile of the sensing cable corresponding to the heat pulse at each of a plurality of sensor locations on the optical fiber sensor array is measured over time. A leak in a pipeline is detected by determining one or more properties of the fluid exposed to the sensing cable at each of the plurality of sensor locations based on the temperature profile corresponding thereto.

摘要翻译： 用于使用包括与加热元件对准的光纤传感器阵列的感测电缆来检测管道中的泄漏的系统和方法。 至少一个热脉冲沿着感测电缆的至少一部分通过加热元件传播，以影响加热元件和暴露于感测电缆的流体之间的热能交换。 在时间上测量与光纤传感器阵列上的多个传感器位置中的每一个处的热脉冲对应的感测电缆的温度分布。 基于与其相对应的温度曲线，通过确定在多个传感器位置中的每一个处暴露于感测电缆的流体的一个或多个特性来检测管道中的泄漏。

公开(公告)号：US20140290343A1

公开(公告)日：2014-10-02

申请号：US14226978

申请日：2014-03-27

申请人： Mohan G. Kulkarni ,  Yibing Zhang

发明人： Mohan G. Kulkarni ,  Yibing Zhang

IPC分类号： G01M3/04

CPC分类号： G01M3/002 ,  G01M3/165 ,  G01M3/38

摘要： System and method for detecting a leak in a pipeline with a sensing cable including an optical fiber sensor array aligned with a heating element. At least one heat pulse is propagated through the heating element along at least a portion of the sensing cable to affect an exchange of thermal energy between the heating element and fluid exposed to the sensing cable. A temperature profile of the sensing cable corresponding to the heat pulse at each of a plurality of sensor locations on the optical fiber sensor array is measured over time. A leak in a pipeline is detected by determining one or more properties of the fluid exposed to the sensing cable at each of the plurality of sensor locations based on the temperature profile corresponding thereto.

摘要翻译： 用于使用包括与加热元件对准的光纤传感器阵列的感测电缆来检测管道中的泄漏的系统和方法。 至少一个热脉冲沿着感测电缆的至少一部分通过加热元件传播，以影响加热元件和暴露于感测电缆的流体之间的热能交换。 在时间上测量与光纤传感器阵列上的多个传感器位置中的每一个处的热脉冲对应的感测电缆的温度分布。 基于与其相对应的温度曲线，通过确定在多个传感器位置中的每一个处暴露于感测电缆的流体的一个或多个特性来检测管道中的泄漏。