输油管道泄漏无线监测系统

发布时间：2018-02-24 01:32

本文关键词： 管道运输泄漏监测微线检漏传感器 MSP430单片机 3G　出处：《曲阜师范大学》2015年硕士论文　论文类型：学位论文

【摘要】：因管道具有运输便捷,易管理,运量大,损失小等特点,已经成为油气储运的主要方式。但人为地破管偷油或管道自身的老化泄漏等原因引起的漏油损失及其带来的恶性事故,使管道运输的安全性显得尤为重要,对输油管道的安全监测也就成为石油运输过程中非常重要的环节。随着管道运输业的不断发展,早期的人工巡线等检测技术因其实时性差、精度低等缺点已经不能再满足检测的要求,因而多种新型的检测技术应运而生。现有的检测方法都存在一些不足。如负压波法、平衡法和压力法等,对检测突发的、较大的泄漏游刃有余,但对微小泄漏却又稍显不足;又如内测法、PPA法以及声波法等,其检测精度较高,但同时成本也高。论文提出一种微线检测法,并针对其设计了输油管道泄漏监测系统。在对国内外现有方法的研究基础上,该方法提出了两点创新突破:一是在监测微小泄漏时,特别是打孔偷油造成损失的初期,能够及时有效地将漏油信息传输到控制中心;二是能够缩小对漏点位置所在的检测范围。论文设计的输油管道泄漏无线监测系统,分为实时监测和信息传输两部分。其中,实时监测部分的每节管道安装MSP430单片机为控制器,控制自主研制的微线检漏传感器采集管道外检测端的电平信号,根据电平信号的高低来判断管道是否发生泄漏,同时采集管道温度信息和压力信息,作为检测管道运营情况的辅助信息。信息传输部分:因对管道分组管理,小组内部通过总线型主从式结构进行多机通信,再通过CC1101无线通信模块发送到中继单元,最后由EM770W模块通过3G无线网络把信息传输到控制中心。论文软件部分是利用C语言在IAR编程环境设计完成的。软件设计包括管道监测系统的主程序,电平监测、温度监测以及压力监测的子程序等。设计满足了对输油管泄漏监测需求,能够在泄漏发生初期及时将管道的运营情况发送的控制中心。在实验室对该系统进行了现场模拟测试,测试结果显示该系统能及时有效地监测出管道外检测端的电平变化,CC1101模块和EM770W模块也能正常通信,检测结果可以通过3G无线网络发送到电脑显示结果。
[Abstract]:Because the pipeline has the characteristics of convenient transportation, easy management, large volume of transportation and small loss, it has become the main way of oil storage and transportation. However, the oil leakage loss caused by artificially breaking the pipeline or the aging leakage of the pipeline itself and the malignant accidents caused by it have become the main way of oil storage and transportation. The safety of pipeline transportation is particularly important, and the safety monitoring of oil pipeline becomes a very important link in the process of oil transportation. With the continuous development of pipeline transportation, the early inspection technology such as manual inspection is poor because of its poor real-time performance. Some shortcomings such as low precision can no longer meet the requirements of detection, so many new detection techniques have emerged. There are some shortcomings in existing detection methods, such as negative pressure wave method, balance method and pressure method, etc. The larger leakage works well, but it is not enough for small leakage, such as internal testing method, PPA method and acoustic wave method, which have high detection accuracy and high cost. In this paper, a micro-wire detection method is proposed. Based on the research on the existing methods at home and abroad, this method has put forward two innovative breakthroughs: first, in the monitoring of small leakage, especially in the initial stage of oil loss caused by drilling and stealing oil, The oil leakage information can be transmitted to the control center in time and effectively, and the detection range of leak location can be reduced. The wireless monitoring system for oil pipeline leakage is divided into two parts: real time monitoring and information transmission. In the real-time monitoring part, MSP430 microcontroller is installed in every section of the pipeline to control the self-developed micro-wire leak detection sensor to collect the level signal of the detection end outside the pipeline, and to judge whether the pipeline leaks or not according to the level of the level signal. At the same time, collecting pipeline temperature information and pressure information, as the auxiliary information to detect pipeline operation. Information transmission part: because of the pipe grouping management, the group carries on the multi-computer communication through the bus-type master-slave structure, Then it is sent to the relay unit through the CC1101 wireless communication module, Finally, the EM770W module transmits the information to the control center through 3G wireless network. The software part of the paper is designed in IAR programming environment using C language. The software design includes the main program of pipeline monitoring system, level monitoring. The subroutine of temperature monitoring and pressure monitoring is designed to meet the requirement of oil pipeline leakage monitoring, and the control center can send the pipeline operation condition in time in the early stage of the leak. The field simulation test of the system is carried out in the laboratory. The test results show that the system can monitor the level change of the outside detection end in time and effectively. The CC1101 module and the EM770W module can also communicate normally, and the detection results can be transmitted to the computer through 3G wireless network.
【学位授予单位】：曲阜师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE973.6

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