往复压缩机故障诊断专家系统的研究与应用

发布时间：2018-04-14 03:13

本文选题：往复压缩机 + 故障诊断　；参考：《北京化工大学》2012年硕士论文

【摘要】：往复式压缩机是石油化工行业的关键设备，，一旦发生故障，将会给生产带来严重损失，甚至会使人们的生命财产安全遭到威胁。因此，必须采用有效的检测预防手段及时发现并排除故障。由于往复压缩机本身具有结构复杂、振源多等特点，并且国内对于往复压缩机的故障诊断研究起步较晚，因此，研究针对往复压缩机的故障诊断专家系统具有重要的实际意义。往复压缩机智能诊断的研究在国内起步较晚，借鉴离心压缩机专家系统的成功案例，对比当前有成功经验的多种智能诊断方法的优缺点，最终选择基于规则及案例的往复压缩机专家系统为往复压缩机智能诊断方法。本文只对基于规则的往复压缩机专家系统做了研究。本文对往复压缩机的常见故障进行了列举和总结，其中包括故障征兆及故障产生原因。在知识获取方面，总结了往复压缩机五大故障部位的十余种故障及其故障机理，并与监测信号相结合，总结了故障信号特征，并将故障及其信号特征对应起来。在结构设计上，对往复压缩机故障诊断专家系统采用了模块化的方式进行设计，建立ID命名规则对专家系统各模块的内容进行命名。在故障征兆的推理上，以故障监测部位为分类标准，结合实际诊断经验，制作了故障推理逻辑图，并加以验证。研究表明，往复压缩机故障诊断专家系统在实际的机组运行监测中可以发挥重要作用，能够起到发现早期故障、预测尚未发生的故障等作用。
[Abstract]:Reciprocating compressor is the key equipment in petrochemical industry. Once it breaks down, it will bring serious loss to production and even threaten the safety of people's life and property.Therefore, effective means of detection and prevention must be adopted to detect and troubleshoot faults in time.Since the reciprocating compressor itself has the characteristics of complex structure and many vibration sources, and the research on the reciprocating compressor fault diagnosis started relatively late in our country, it is of great practical significance to study the fault diagnosis expert system for reciprocating compressor.The research on intelligent diagnosis of reciprocating compressor started relatively late in our country. Based on the successful case of centrifugal compressor expert system, the advantages and disadvantages of various intelligent diagnosis methods with successful experience are compared.Finally, the expert system of reciprocating compressor based on rule and case is chosen as the intelligent diagnosis method of reciprocating compressor.In this paper, the expert system of reciprocating compressor based on rules is studied only.This paper enumerates and summarizes the common faults of reciprocating compressors, including fault symptoms and causes.In the aspect of knowledge acquisition, more than ten kinds of faults and their fault mechanisms of five major faults of reciprocating compressor are summarized, and combined with monitoring signals, the characteristics of fault signals are summarized, and the fault and its signal characteristics are corresponding.In the aspect of structure design, the fault diagnosis expert system of reciprocating compressor is designed in a modular way, and the ID naming rule is established to name the contents of each module of the expert system.In the reasoning of fault symptom, taking fault monitoring position as classification standard, combined with actual diagnosis experience, the logic diagram of fault inference is made and verified.The research shows that the reciprocating compressor fault diagnosis expert system can play an important role in the actual unit operation monitoring, can play the role of finding early faults and predicting the failure that has not yet occurred.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH45;TH165.3

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