海洋平台导管架对AE波传播机制影响研究及设备智能点检系统开发

发布时间：2018-01-20 17:09

本文关键词： 海洋平台声发射智能点检状态监测热油泵　出处：《北京化工大学》2011年硕士论文　论文类型：学位论文

【摘要】：钢质导管架是很多结构体的基础构件,但由于长期工作在交变重载、冲击腐蚀的环境中,导管架极易产生疲劳断裂而失效；另一方面,随着设备投入运行时间的不断累积,设备出现故障的可能性大大增加,因此,开展并加强对大型结构件和机组设备的健康监测具有十分重要的意义。本文综合声发射技术和振动测试技术在故障识别、故障评价及寿命预测等方面各自的优势,开展了早期故障预警机制下的海洋平台导管架对AE波传播机制影响研究及基于机组设备健康状态监测的设备智能点检系统开发。第一篇海洋平台导管架对AE波传播机制影响研究。结合声发射技术的特点,针对海洋平台整体性安全监测的现状,论证了利用声发射技术进行海洋平台导管架监测的可行性。从弹性波在各向同性固体介质中传播的角度,分析了声发射波在钢质空心圆管中的波动方程。利用声发射数据采集系统,开展声发射源在焊缝、弯管、直径和壁厚四种不同结构特征的钢质空心圆管中传播的实验研究,并对不同位置的传感器所采集的数据进行整理和分析,提取了代表声发射波传播特性的参数。通过对各个参数的交叉对比,找出了空心圆管不同的结构特征对声发射波传播机制的影响。第二篇设备智能点检系统开发。针对现场机组设备的运行和管理情况,利用振动测试技术对设备状态参数拾取的有效性,融合设备的运行维护与故障管理,开发了基于面向对象的设备健康监测和综合应用平台。通过设备智能点检系统在炼油企业的实践,成功地开展了常减压装置中热油泵在运行过程中的故障诊断,准确地定位了故障位置,快速地诊断出故障原因,科学地评估了损伤程度,并从介质流动的角度揭示了故障产生的动力学原理。
[Abstract]:Steel jacket is the basic component of many structures, but because of long term work in alternating heavy load, impact corrosion environment, jacket is prone to fatigue fracture and failure. On the other hand, with the continuous accumulation of equipment operational time, the possibility of equipment failure greatly increased, so. It is of great significance to carry out and strengthen the health monitoring of large structural parts and unit equipment. This paper integrates acoustic emission technology and vibration testing technology in fault identification. The advantages of fault evaluation and life prediction. The influence of offshore platform jacket on AE wave propagation mechanism under early fault warning mechanism and the development of equipment intelligent spot inspection system based on unit equipment health condition monitoring are carried out. The first part is about the influence of offshore platform jacket on AE wave propagation mechanism. Combined with the characteristics of acoustic emission technology, this paper aims at the status quo of integrated safety monitoring of offshore platform. The feasibility of using acoustic emission technology to monitor the jacket of offshore platform is demonstrated from the point of view of elastic wave propagating in isotropic solid medium. The wave equation of acoustic emission wave in steel hollow circular pipe is analyzed. The acoustic emission data acquisition system is used to carry out acoustic emission source in weld seam and bend pipe. Experimental study on propagation of steel hollow circular pipe with four different structural characteristics, diameter and wall thickness, and collation and analysis of data collected by sensors at different positions. The parameters representing the propagation characteristics of acoustic emission wave were extracted and the influence of different structural characteristics of hollow circular tube on the propagation mechanism of acoustic emission wave was found by the cross-comparison of each parameter. The second part is the development of the equipment intelligent spot inspection system. According to the operation and management of the equipment in the field, the vibration test technology is used to pick up the equipment state parameters, and the operation maintenance and fault management of the equipment are combined. The equipment health monitoring and integrated application platform based on object oriented is developed. Through the practice of equipment intelligent point inspection system in oil refining enterprise, the fault diagnosis of hot oil pump in atmospheric and vacuum unit is successfully carried out. The fault location is accurately located, the cause of fault is quickly diagnosed, the degree of damage is scientifically evaluated, and the dynamic principle of fault generation is revealed from the point of view of medium flow.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH136;TH165.3

【参考文献】