离心泵故障诊断专家系统的应用研究

发布时间：2018-05-31 04:56

本文选题：离心泵 + 故障诊断　；参考：《北京化工大学》2011年硕士论文

【摘要】：离心泵广泛应用于炼化、采油、电力、冶金等行业中,它运行状态的好坏,直接影响环保和生产等安全工作,加强对其维护与管理,防止设备发生事故,具有十分重要的意义。随着工业的发展,新时期对设备的检、维修工作提出了更为严格的要求。而专家系统作为人工智能的一个分支,近些年来逐渐应用于工业生产领域,产生了专门针对机械设备的故障诊断专家系统,这类研究在取得了一定成果的同时也得到了学术界和工程界的高度重视。因此,在现有的故障诊断专家系统研究成果的基础之上,研制出针对离心泵的故障诊断专家系统是一项有积极意义的工作。本文针对离心泵故障诊断的特点,主要做了以下四方面工作：第一,归纳整理了离心泵的常见故障,通过对故障机理的分析找出故障与故障征兆的对应关系；第二,针对离心泵的故障信号特点,总结实现了各种适用于离心泵的特征提取方法。第三,针对传统包络解调算法中载波带无法自动选择问题,提出了自适应最优滤波算法；第四,在前两项工作的基础上,设计适用于离心泵的故障诊断逻辑,将各种故障与故障征兆以规则的形式进行匹配,并将规则录入专家系统中,并通过现场实际数据对离心泵专家故障诊断专家系统的诊断效果进行了验证。研究表明,离心泵故障诊断专家系统可以对离心泵的故障诊断起到指导作用,具有重要的工程实用价值和积极的意义
[Abstract]:Centrifugal pump is widely used in the fields of refining, oil production, electric power, metallurgy and so on. It is of great significance to strengthen the maintenance and management of centrifugal pump, which directly affects the safety work such as environmental protection and production, and prevents the accident of equipment. With the development of industry, the inspection and maintenance of equipment are required more strictly in the new period. As a branch of artificial intelligence, expert system has been gradually applied in the field of industrial production in recent years. This kind of research has obtained the certain achievement at the same time also has obtained the academic circles and the engineering circles highly attention. Therefore, it is of great significance to develop a fault diagnosis expert system for centrifugal pumps on the basis of the research results of the existing fault diagnosis expert system. In this paper, according to the characteristics of centrifugal pump fault diagnosis, mainly do the following four aspects of work: First, the common faults of centrifugal pump are summarized and sorted out, and the corresponding relationship between fault and fault symptom is found through the analysis of fault mechanism. Secondly, according to the fault signal characteristics of centrifugal pump, a variety of feature extraction methods suitable for centrifugal pump are summarized and realized. Thirdly, an adaptive optimal filtering algorithm is proposed to solve the problem that the carrier band can not be automatically selected in the traditional envelope demodulation algorithm. Fourthly, on the basis of the first two works, the fault diagnosis logic suitable for centrifugal pump is designed. All kinds of faults and fault symptoms are matched in the form of rules, and the rules are input into the expert system. The diagnosis effect of the expert fault diagnosis expert system of centrifugal pump is verified by the actual data in the field. The research shows that the expert system of centrifugal pump fault diagnosis can play a guiding role in the fault diagnosis of centrifugal pump, and has important practical value and positive significance in engineering.
【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】：TH311

【参考文献】