苯乙烯螺杆压缩机的故障诊断与分析

发布时间：2018-06-24 16:07

本文选题：双螺杆压缩机 + 故障诊断　；参考：《东北石油大学》2011年硕士论文

【摘要】：随着螺杆压缩机技术的发展,螺杆压缩机在化工行业越来越广泛的被应用。目前,双螺杆压缩机是我国石油化工的主要气体压缩设备之一,作为生产装置的关键设备其运行状态的稳定性将直接关系到整个生产装置的的安全性、稳定性。一旦设备发生故障,将极有可能影响整个生产装置的稳定运行并造成装置全面停车,严重降低生产效率并带来巨大的经济损失。从80年代开始,我国有关部门开始重视对螺杆压缩机进行状态监测和故障诊断技术的研究,使我国的螺杆压缩机的监测与诊断技术水平迅速提高。机械设备故障诊断技术的重要意义就在于它为机械设备传统维修制度的改革奠定了基础,可使合理的预知维修制度代替传统的定时维修制度,从而减少事故发生率,降低维修费用,确保机械设备的安全运行。本课题以大庆石化公司化工三厂苯乙烯车间的双螺杆压缩机故障诊断和分析为研究背景,针对双螺杆压缩机进行状态监测与故障诊断,旨在寻找分析监测系统和故障之间的内在联系,及时发现故障和预防恶性事故发生,保证关键性设备的完好和正常运转,有效地消除意外故障停车。实践证明,由于状态监测技术的应用,使突发事故的发生率大大降低,且在日常管理费用、维修成本等方面大幅度降低,从而提高了压缩机连续工作的能力,对装置的稳定运行起到了很好的保障作用。本文开篇对双螺杆压缩机的基本组成结构、工作原理、基本特点以及国内外双螺杆压缩机故障诊断方面的现状进行了简述。然后对设备故障诊断技术进行了概述,通过对螺杆压缩机常见故障的特点进行特征提取,重点阐明了螺杆压缩机转子和轴承等产生故障的形式、特征以及产生的机理,并提出相关的振动诊断方法。本文还给出了螺杆压缩机振动的测试技术和具体分析系统,最后通过对现场的具体故障案例进行诊断与分析,体现了故障诊断技术在生产实践中的重要作用。
[Abstract]:With the development of screw compressor technology, screw compressor is more and more widely used in chemical industry. At present, twin-screw compressor is one of the main gas compression equipment in petrochemical industry in China. As the key equipment of production unit, the stability of its running state will directly relate to the safety and stability of the whole production plant. Once the equipment breaks down, it is very likely to affect the stable operation of the whole plant and cause the device to stop completely, which will seriously reduce the production efficiency and bring huge economic losses. Since the 1980s, the relevant departments of our country have begun to attach importance to the research on the condition monitoring and fault diagnosis technology of screw compressor, which makes the monitoring and diagnosis technology level of screw compressor in our country improve rapidly. The important meaning of mechanical equipment fault diagnosis technology is that it lays a foundation for the reform of the traditional maintenance system of machinery and equipment, and can make the reasonable predictive maintenance system replace the traditional timing maintenance system, thus reducing the incidence of accidents. Reduce maintenance costs to ensure safe operation of mechanical equipment. Based on the fault diagnosis and analysis of twin screw compressor in styrene workshop of Daqing Petrochemical Company, the condition monitoring and fault diagnosis of twin screw compressor are carried out. The purpose of this paper is to find out the internal relationship between the monitoring system and the fault, to find the fault in time and to prevent the occurrence of the malignant accident, to ensure the complete and normal operation of the critical equipment, and to effectively eliminate the accidental fault stop. It has been proved by practice that because of the application of condition monitoring technology, the incidence of sudden accidents is greatly reduced, and the cost of daily management and maintenance is greatly reduced, thus improving the ability of compressor to work continuously. It plays a good role in ensuring the stable operation of the device. At the beginning of this paper, the basic structure, working principle, basic characteristics of twin-screw compressor and the present situation of fault diagnosis of twin-screw compressor at home and abroad are briefly described. Then the fault diagnosis technology of the equipment is summarized, and the characteristics of the common faults of the screw compressor are extracted, and the form, characteristics and mechanism of the faults such as rotor and bearing of the screw compressor are expounded emphatically. The method of vibration diagnosis is put forward. This paper also gives the testing technology and the concrete analysis system of the screw compressor vibration. Finally, through the diagnosis and analysis of the concrete fault cases in the field, the important role of the fault diagnosis technology in the production practice is demonstrated.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH45

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