-
公开(公告)号：US07894061B2
公开(公告)日：2011-02-22
申请号：US12142258
申请日：2008-06-19
CPC分类号： G01F1/7086 , G01F1/661
摘要： A flow monitoring system includes a pipe for transporting a fluid therethrough. An optical fiber generally spirals about the pipe along a longitudinal portion having a predetermined length to serve as a single transducer for detecting flow information from the longitudinal portion. A linear polarizer/analyzer circuit communicates with the optical fiber. A light source communicates with the linear polarizer/analyzer circuit and generates a light signal along the optical fiber at a frequency greater than a period of a disturbance to flow past the predetermined length of the transducer. A reflector is disposed along the optical fiber for reflecting the light signal along the optical fiber. An optical detector communicates with the linear polarizer/analyzer circuit. The optical detector determines from the light signal dynamic events along the optical fiber indicative of flow disturbances passing by the transducer.
摘要翻译： 流量监测系统包括用于输送流体的管道。 光纤通常沿着具有预定长度的纵向部分绕管道螺旋，以用作用于从纵向部分检测流量信息的单个换能器。 线性偏振器/分析器电路与光纤通信。 光源与线性偏振器/分析器电路通信，并且以大于干扰周期的频率沿着光纤产生光信号，以流过换能器的预定长度。 沿着光纤布置反射器以沿着光纤反射光信号。 光学检测器与线性偏振器/分析器电路通信。 光学检测器根据光信号确定沿着光纤的指示由换能器通过的流动干扰的动态事件。
-
公开(公告)号：US09335224B2
公开(公告)日：2016-05-10
申请号：US13208910
申请日：2011-08-12
CPC分类号： G01K11/32 , G01K2011/324 , G02B6/3827 , G02B6/4492
摘要： A sensing cable includes a pair of sensing fibers that are connected to one another by a U-shaped turnaround section. The turnaround section is a section of sensing fiber coated with a jacket that includes metallic components. The turnaround section is bent and, then, annealed according to a method of the present invention. The turnaround section is robust and reduced in size (i.e., radius). The sensing cable also includes an inner sleeve that surrounds the sensing fibers and an elongated outer armor casing (i.e., including an armor tube and a sealing cap) that encases a terminating end thereof. The armor tube and the sealing cap protect the sensing fiber from mechanical and chemical harm, are reduced in size and facilitate insertion of the sensing cable into downhole environments. The sensing cable has improved operating range up to 300° C.
摘要翻译： 传感电缆包括一对传感纤维，它们通过U形周转部彼此连接。 周转部分是涂覆有包括金属部件的护套的感测纤维的一部分。 弯曲部分弯曲，然后根据本发明的方法进行退火。 转向部分是坚固的并且尺寸减小（即，半径）。 感测电缆还包括围绕感测纤维的内套筒和包围其终端的细长外装甲套管（即，包括铠装管和密封帽）。 护甲管和密封盖保护传感纤维免受机械和化学伤害，尺寸减小，便于将感测电缆插入井下环境。 传感电缆的工作范围可达300°C。
-
公开(公告)号：US08973445B2
公开(公告)日：2015-03-10
申请号：US13603506
申请日：2012-09-05
IPC分类号： G01L9/00
CPC分类号： G01L9/0077
摘要： A holographic pressure sensing apparatus includes a first optical fiber with a diffractive element at its end face, and a light-coupling component for receiving from the first optical fiber end face first and second images respectively formed by interaction with the diffractive element of a first light of a first wavelength and a second light of a second wavelength. Displacement of the light-coupling component, toward or away from the first optical fiber end face, will adjust an overlap of the first and second images, such that a change in a measurement of said overlap will indicate a change of the pressure in the fluid surrounding the casing.
摘要翻译： 全息压力感测装置包括在其端面具有衍射元件的第一光纤和用于从第一光纤端面接收第一和第二图像的光耦合部件，所述第一和第二图像分别通过与第一光的衍射元件相互形成 的第一波长和第二波长的第二光。 光耦合部件朝向或远离第一光纤端面的位移将调节第一和第二图像的重叠，使得所述重叠的测量的改变将指示流体中的压力变化 围绕套管。
-
公开(公告)号：US20090290147A1
公开(公告)日：2009-11-26
申请号：US12124517
申请日：2008-05-21
CPC分类号： G02B6/276 , G01D5/35383 , G02B6/29319
摘要： An optical fiber sensor system includes an optical fiber. A linear polarizing component is configured to communicate with the optical fiber. The linear polarizing component includes a polarization sensing fiber to be disposed adjacent to and preferably collinear with the optical fiber. A light source communicates with the linear polarizing component for generating a light signal along the optical fiber. A reflector is disposed along the optical fiber for reflecting back the light signal along the optical fiber. An optical detector communicates with the linear polarizing component. A signal processor communicating with the optical detector and configured for determining from the reflected light signal dynamic events along the optical fiber.
摘要翻译： 光纤传感器系统包括光纤。 线性偏振分量被配置为与光纤通信。 线性偏振分量包括邻近并优选与光纤共线设置的偏振光感测光纤。 光源与线性偏振组件通信，用于沿光纤产生光信号。 沿着光纤布置反射器，用于沿光纤反射光信号。 光学检测器与线性偏振组件通信。 与光学检测器通信并被配置用于根据反射光信号确定沿着光纤的动态事件的信号处理器。
-
公开(公告)号：US20120039561A1
公开(公告)日：2012-02-16
申请号：US13208910
申请日：2011-08-12
CPC分类号： G01K11/32 , G01K2011/324 , G02B6/3827 , G02B6/4492
摘要： A sensing cable includes a pair of sensing fibers that are connected to one another by a U-shaped turnaround section. The turnaround section is a section of sensing fiber coated with a jacket that includes metallic components. The turnaround section is bent and, then, annealed according to a method of the present invention. The turnaround section is robust and reduced in size (i.e., radius). The sensing cable also includes an inner sleeve that surrounds the sensing fibers and an elongated outer armor casing (i.e., including an armor tube and a sealing cap) that encases a terminating end thereof. The armor tube and the sealing cap protect the sensing fiber from mechanical and chemical harm, are reduced in size and facilitate insertion of the sensing cable into downhole environments. The sensing cable has improved operating range up to 300° C.
摘要翻译： 传感电缆包括一对传感纤维，它们通过U形周转部彼此连接。 周转部分是涂覆有包括金属部件的护套的感测纤维的一部分。 弯曲部分弯曲，然后根据本发明的方法进行退火。 转向部分是坚固的并且尺寸减小（即，半径）。 感测电缆还包括围绕感测纤维的内套筒和包围其终端的细长外装甲套管（即，包括铠装管和密封帽）。 护甲管和密封盖保护传感纤维免受机械和化学伤害，尺寸减小，便于将感测电缆插入井下环境。 传感电缆的工作范围可达300°C。
-
6.发明申请STRAIN AND HYDROGEN TOLERANT OPTICAL DISTRIBUTED TEMPERATURE SENSOR SYSTEM AND METHOD 审中-公开应变和氢耐受光分布式温度传感器系统及方法公开(公告)号：US20080253428A1
公开(公告)日：2008-10-16
申请号：US12099346
申请日：2008-04-08
CPC分类号： G01K11/32 , G01D5/35364 , G01K2011/322
摘要： A distributed temperature sensing system and method includes an optical sensing waveguide. The optical sensing waveguide is a single mode waveguide having a substantially pure silica core and a large outer diameter. The system further includes an optical instrument optically connected to the optical sensing waveguide. The optical instrument is configured for generating an optical excitation signal along the optical sensing waveguide, and is also configured for receiving a return optical signal indicative of the temperature at one or more locations along the optical sensing waveguide.
摘要翻译： 分布式温度感测系统和方法包括光学感测波导。 光感测波导是具有基本上纯的二氧化硅核心和大的外径的单模波导。 该系统还包括光学仪器，其光学连接到光学感测波导。 光学仪器被配置为沿着光学感测波导产生光学激发信号，并且还被配置为用于接收指示沿着光学感测波导的一个或多个位置处的温度的返回光学信号。
-
公开(公告)号：US20140060199A1
公开(公告)日：2014-03-06
申请号：US13603506
申请日：2012-09-05
IPC分类号： G01L9/00
CPC分类号： G01L9/0077
摘要： A holographic pressure sensing apparatus includes a first optical fiber with a diffractive element at its end face, and a light-coupling component for receiving from the first optical fiber end face first and second images respectively formed by interaction with the diffractive element of a first light of a first wavelength and a second light of a second wavelength. Displacement of the light-coupling component, toward or away from the first optical fiber end face, will adjust an overlap of the first and second images, such that a change in a measurement of said overlap will indicate a change of the pressure in the fluid surrounding the casing.
摘要翻译： 全息压力感测装置包括在其端面具有衍射元件的第一光纤和用于从第一光纤端面接收第一和第二图像的光耦合部件，第一和第二图像分别通过与第一光的衍射元件的相互作用而形成 的第一波长和第二波长的第二光。 光耦合部件朝向或远离第一光纤端面的位移将调节第一和第二图像的重叠，使得所述重叠的测量的改变将指示流体中的压力变化 围绕套管。
-
8.发明授权Method for performing optical distributed temperature sensing (DTS) measurements in hydrogen environments 有权在氢环境中执行光分布式温度感测（DTS）测量的方法公开(公告)号：US08646968B2
公开(公告)日：2014-02-11
申请号：US13209015
申请日：2011-08-12
IPC分类号： G01K11/32
CPC分类号： G01K11/32 , G01K2011/324 , G02B6/3827 , G02B6/4492
摘要： A method for calculating a temperature along a length of a sensing fiber of a distributed thermal sensing (DTS) system. The sensing fiber, which has two ends, is heat resistant for operation up to 300° C. The DTS system includes a two-channel DTS interrogator that is attached to each of the two ends of the sensing fiber. The DTS interrogator interrogates the sensing fiber from both ends, calculates a temperature difference between co-located positions along the length of the sensing fiber for each end, and determines an error associated with the temperature difference. Based on the determined error, a corrected temperature value along the length of the sensing fiber is calculated and outputted.
摘要翻译： 一种用于计算沿着分布式热感测（DTS）系统的感测光纤的长度的温度的方法。 具有两端的传感光纤耐热操作，最高可达300℃.DTS系统包括一个双通道DTS询问器，其连接到感测光纤的两端。 DTS询问器从两端询问感测光纤，计算出每个端部沿感测光纤长度的同位置之间的温差，并确定与温差有关的误差。 基于确定的误差，计算并输出沿传感光纤的长度的校正温度值。
-
公开(公告)号：US07526149B1
公开(公告)日：2009-04-28
申请号：US12176468
申请日：2008-07-21
CPC分类号： G01K11/32 , G01D5/35364
摘要： An optical fiber strain-temperature sensing system includes first and second optical sources respectively generating first and second light signals having different wavelengths. Optical circulators direct the light signals to an external sensing cable for the respective generation of first and second Brillouin scattered light signals. First and second frequency mixers have a first input respectively coupled to the first and second optical light sources. The optical circulators direct the first and second Brillouin scattered light signals respectively to second inputs of the first and second frequency mixers. First and second transducers are respectively coupled to an output of the first and second frequency mixers and are respectively configured for generating first and second electrical signals indicative of a Brillouin frequency shift of the first and second light signals. A processor is coupled to the first and second transducers, and determines the strain and temperature characteristics of the external sensing cable.
摘要翻译： 光纤应变温度感测系统包括分别产生具有不同波长的第一和第二光信号的第一和第二光源。 光循环器将光信号引导到用于相应产生第一和第二布里渊散射光信号的外部感测电缆。 第一和第二混频器具有分别耦合到第一和第二光学光源的第一输入。 光循环器将第一和第二布里渊散射光信号分别引导到第一和第二混频器的第二输入端。 第一和第二换能器分别耦合到第一和第二混频器的输出，并且分别被配置用于产生指示第一和第二光信号的布里渊频移的第一和第二电信号。 处理器耦合到第一和第二换能器，并且确定外部感测电缆的应变和温度特性。
-
公开(公告)号：US08864374B2
公开(公告)日：2014-10-21
申请号：US13209000
申请日：2011-08-12
CPC分类号： G01K11/32 , G01K2011/324 , G02B6/3827 , G02B6/4492
摘要： A sensing cable has a sensing fiber assembly, which includes a pair of sensing fibers joined by a turnaround section with a modal filter, at a terminating end of the sensing fibers. The sensing cable also includes an inner sleeve that surrounds the sensing fiber assembly and an armored casing that caps the terminating end of the inner sleeve. The sensing cable has a low profile and its components are each made of high temperature and hydrogen tolerant materials and are capable of prolonged operation at high temperatures, such as up to 300° C., in hydrogen environments over long lengths of fiber. A distributed thermal sensing (DTS) interrogator is connected to the sensing cable and performs DTS measuring according to protocols and algorithms that leverage the modal filter of the turnaround section to calculate temperature readings along the sensing fiber assembly.
摘要翻译： 感测电缆具有感测纤维组件，该感测纤维组件包括在感测纤维的终止端处由具有模态滤波器的周转部分连接的一对感测纤维。 感测电缆还包括围绕感测纤维组件的内套筒和盖住内套筒的终端的铠装外壳。 感测电缆具有低外形，其部件均由高温耐氢材料制成，并且能够在长时间长度的纤维的氢环境中在高温（例如高达300℃）下长时间运行。 分布式热感测（DTS）询问器连接到感测电缆，并根据协议和算法执行DTS测量，该协议和算法利用周转部分的模态滤波器来计算沿传感光纤组件的温度读数。
-
-
-
-
-
-
-
-
-
搜索结果
16 条记录 (耗时 0.016 秒)
