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91 条记录 (耗时 0.033 秒)

    Method for measuring reactor bed level from active acoustic measurement and analysis
    11.
    发明申请
    Method for measuring reactor bed level from active acoustic measurement and analysis 有权
    从主动声学测量和分析测量反应堆床层的方法

    公开(公告)号：US20090314080A1

    公开(公告)日：2009-12-24

    申请号：US12455895

    申请日：2009-06-09

    申请人： Jianmin Qu ,  Laurence J. Jacobs ,  Limin Song ,  Jormarie Bitar ,  Mark M. Disko

    发明人： Jianmin Qu ,  Laurence J. Jacobs ,  Limin Song ,  Jormarie Bitar ,  Mark M. Disko

    IPC分类号： G01F23/296

    CPC分类号： G01F23/296 ,  G01F23/2966

    摘要： The present invention is a non-intrusive method to determine the fluid level in a vessel. In a preferred embodiment, the vessel is a delayed coker drum in a refinery. Waves are generated in the vessel from an outside source. For wall vibration generated in the frequency range of 1-20,000 Hz, accelerometers on the exterior wall of the vessel measures the attenuation of the vibration modes of the vessel. The fluid level can related to the attenuation of the vibration mode. For wall vibration generated in the ultrasonic range, the wave traveling in the vessel wall are guided waves. The guided wave will leak energy into the fluid inside the vessel and will attenuate depending on the fluid level. Ultrasonic receivers on the outside of the vessel measure the attenuation. The fluid level can be related attenuation of the ultrasonic waves.

    摘要翻译： 本发明是用于确定容器中的液位的非侵入性方法。 在优选的实施方案中，该容器是炼油厂中的延迟焦化鼓。 波浪是从外部来源产生的。 对于在1-20,000Hz频率范围内产生的壁振动，容器外壁上的加速度计测量容器振动模式的衰减。 液位与振动模式的衰减有关。 对于在超声波范围内产生的壁振动，在血管壁中行进的波是导波。 引导波会将能量泄漏到容器内的流体中，并且会根据液位而衰减。 容器外部的超声波接收器测量衰减。 液位可以与超声波的衰减有关。

    Dual Transducer Communications Node for Downhole Acoustic Wireless Networks and Method Employing Same
    15.
    发明申请
    Dual Transducer Communications Node for Downhole Acoustic Wireless Networks and Method Employing Same 审中-公开

    公开(公告)号：US20180058207A1

    公开(公告)日：2018-03-01

    申请号：US15666292

    申请日：2017-08-01

    申请人： Limin Song ,  Yibing Zhang ,  Katie M. Walker ,  Henry Alan Wolf

    发明人： Limin Song ,  Yibing Zhang ,  Katie M. Walker ,  Henry Alan Wolf

    IPC分类号： E21B47/16 ,  E21B47/00

    摘要： An electro-acoustic communications node system and method for downhole wireless telemetry, the system including a housing for mounting to or with a tubular body; a receiver transducer positioned within the housing, the receiver transducer structured and arranged to receive acoustic waves that propagate through the tubular member; a transmitter transducer and a processor, positioned within the housing and arranged to retransmit the acoustic waves to another acoustic receiver in a different housing, using the tubular member for the acoustic telemetry. In some embodiments, the transducers may be piezoelectric transducers and/or magnetostrictive transducers. Included in the housing is also a power source comprising one or more batteries. A downhole wireless telemetry system and a method of monitoring a hydrocarbon well are also provided.

    METHOD AND SYSTEM FOR MONITORING DISTILLATION TRAY PERFORMANCE
    19.
    发明申请
    METHOD AND SYSTEM FOR MONITORING DISTILLATION TRAY PERFORMANCE 有权
    用于监测蒸馏塔性能的方法和系统

    公开(公告)号：US20150177107A1

    公开(公告)日：2015-06-25

    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： G01M99/00 ,  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.

    摘要翻译： 用于利用包括可操作地耦合到光信号询问器的光纤传感器阵列的感测电缆来检测蒸馏塔的托盘的操作状态的系统和方法。 对与光纤传感器阵列上的至少一个传感器位置对应的传感电缆的输出进行监视。 感测电缆的输出被分类为至少包括稳定条件分类和基于相对于预定阈值的输出确定的不稳定状态分类的预定分类集合之一。 当感测电缆的输出被分类为不稳定状态分类时，产生信号。

    METHOD AND SYSTEM FOR DETECTING DEPOSITS IN A VESSEL
    20.
    发明申请
    METHOD AND SYSTEM FOR DETECTING DEPOSITS IN A VESSEL 有权
    用于检测船舶沉积物的方法和系统

    公开(公告)号：US20140294040A1

    公开(公告)日：2014-10-02

    申请号：US14226929

    申请日：2014-03-27

    申请人： Yibing Zhang ,  Limin Song ,  Geoff Keiser ,  Michael Louis Hergenrother ,  Berne K. Stober ,  Patricia H. Kalamaras

    发明人： Yibing Zhang ,  Limin Song ,  Geoff Keiser ,  Michael Louis Hergenrother ,  Berne K. Stober ,  Patricia H. Kalamaras

    IPC分类号： G01K3/10 ,  G01K11/32

    CPC分类号： G01K11/32

    摘要： Systems and methods for detecting a deposit in a vessel with a sensing cable including an optical fiber sensor array aligned with a heating element disposed in the vessel. 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 media exposed to the sensing cable. An optical signal interrogator is adapted to receive a signal from a plurality of sensor locations and configured to measure, a temperature profile corresponding to the heat pulse at the sensor locations. A control unit is configured to detect a deposit by determining one or more properties of the one or more media exposed to the sensing cable at each of the plurality of sensor locations based on the temperature profile corresponding thereto.

    摘要翻译： 用于使用感测电缆检测容器中的沉积物的系统和方法，所述感测电缆包括与设置在容器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加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介质之间的热能交换。 光信号询问器适于接收来自多个传感器位置的信号并且被配置为测量对应于传感器位置处的加热脉冲的温度曲线。 控制单元被配置为基于与其对应的温度曲线，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一个或多个介质的一个或多个介质来检测沉积物。