长输原油管道内检测器速度控制技术开发

发布时间：2019-04-21 10:37

【摘要】：长输管道内检测是国内外重要的管道腐蚀检测技术之一,内检测器在管道内的平稳运行是保证其检测精度、效率及可靠性的关键。但是目前国内外对内检测器速度控制技术的研究还很不足,大多依靠理论分析、数值模拟或现场试验等研究手段,因此,开发管道内检测器速度控制实验装置,通过管道内检测器流体动力学实验,深入开展内检测器速度控制方式、控制装置以及控制算法研究,对长输管道内检测技术的工程应用有着重要的意义。论文结合输油管道工艺、水洞实验和现代检测技术,设计并制造了一套管道内检测器速度控制实验装置。该实验装置模拟原油管道内检测器在水平直管中的运行过程,具有内检测器收发功能;设计的分段光电开关可有效检测内检测器运动速度;基于PLC的数据采集系统可连续采集管道流量、压力以及内检测器运动速度等实验参数;设计的内检测器实验样机可方便的搭载各种泄流调速装置。实验装置满足管道内检测器速度控制实验的要求,适用于深入研究原油管道内检测器速度控制技术。论文提出了一种自平衡式泄流调速装置,通过数值模拟计算了不同泄流调节片展开度下内检测器驱动力的变化情况,设计了相应的拉伸弹簧,对带有自平衡式泄流调速装置的实验样机进行了速度控制实验,实验结果表明自平衡式泄流调速装置能消除复杂多变的流场带来的压力波动问题,有效控制内检测器在管道内的运动速度。开发的管道内检测器速度控制实验装置为深入研究原油管道内检测器速度控制技术提供了很好的研究平台。自平衡式泄流调速方式是管道内检测器重要的、适用的、有效的速度控制技术之一。
[Abstract]:The internal detection of long-distance pipeline is one of the most important pipeline corrosion detection techniques at home and abroad. The smooth operation of the internal detector in the pipeline is the key to ensure its detection accuracy, efficiency and reliability. But at present, the research of internal detector velocity control technology at home and abroad is still very insufficient, most of them rely on the theoretical analysis, numerical simulation or field test and other research means, therefore, the development of the pipeline detector speed control experimental equipment, Through the hydrodynamics experiment of the in-pipe detector, the research on the speed control mode, the control device and the control algorithm of the inner detector is of great significance to the engineering application of the internal detection technology of the long-distance pipeline. Combined with oil pipeline technology, water tunnel experiment and modern detection technology, this paper designs and manufactures a set of experimental device for velocity control of in-pipe detector. The experimental device simulates the operation process of the inner detector in the horizontal straight pipe, and has the function of receiving and receiving the inner detector, and the designed subsection photoelectric switch can detect the movement speed of the inner detector effectively. The data acquisition system based on PLC can continuously collect the experimental parameters such as pipeline flow pressure and velocity of the inner detector and the designed experimental prototype of the inner detector can be conveniently loaded with various discharge speed regulating devices. The experimental device meets the requirements of the velocity control experiment of the in-pipeline detector and is suitable for the further study of the velocity control technology of the inner detector of the crude oil pipeline. In this paper, a self-balanced discharge speed regulating device is proposed. The driving force of the inner detector is calculated by numerical simulation, and the corresponding tension spring is designed, and the driving force of the inner detector is calculated by numerical simulation. The speed control experiment of the experimental prototype with self-balanced discharge speed regulating device is carried out. The experimental results show that the self-balanced discharge speed regulating device can eliminate the pressure fluctuation caused by the complex and changeable flow field. Effectively control the velocity of the internal detector in the pipe. The developed velocity control device for in-pipeline detector provides a good research platform for further research on velocity control technology of in-pipeline detector. Self-balanced discharge speed regulation is one of the most important, applicable and effective speed control techniques for in-pipe detectors.
【学位授予单位】：北京石油化工学院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE973.6

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