基于管壁振动频率特性的光纤流量监测系统  

Study of optical fiber fluid flow monitoring system using pipe vibration frequency characteristic

作　　者：刘小会[1] 刘素香[2] 尚盈[1] 王昌[1] 

机构地区：[1]山东省科学院激光研究所山东省光纤传感技术重点实验室,山东济南250014 [2]山东省科学院,山东济南250014

出　　处：《光学仪器》2015年第2期103-106,共4页Optical Instruments

基　　金：山东省自主创新成果转化重大专项项目(2011ZHZX1A0107);山东省博士基金(2009BSC01028)

摘　　要：为提高石油生产中原油采收率,需对原油采集时的流量进行实时监测。提出一种基于管壁振动频率的光纤流量监测系统,通过对缠绕在油管外壁的传感光纤感应流体经过管壁时由湍流产生的振动,从而实现流量监测。通过实验总结出管壁的振动频率特性,并在此频率特性范围内确定出平均流量与管壁振动加速度脉动值的标准方差的量化关系,求解出相应的流量。Fluid flow is an extremely important parameter in the oil production field.Real-time monitoring of fluid flow parameter provides a scientific basis for increasing reservoir recovery.An optical fiber fluid flow monitoring system based on pipe vibration frequency characteristic is proposed.The vibration of the pipe is induced by turbulent flow when fluid flow passes through the pipe.The fiber optic sensors wrapped around the pipe outside the wall are used to detect the vibration information.The frequency characteristics of the vibration of the pipe are summarized.Then the relationship between mean flow rate and standard deviation of the vibration of the pipe induced by turbulence is determined.

关 键 词：石油生产 流量 光纤 湍流 振动 

分 类 号：TN253[电子电信—物理电子学]