立式筒袋泵异常振动分析及减振措施研究

发布时间：2018-05-03 14:08

本文选题：立式筒袋泵 + 振动异常　；参考：《东北石油大学》2015年硕士论文

【摘要】：为了配合大庆炼化公司600万吨/年炼油计划,解决炼化装置长周期平稳运行的问题。以大连耐酸泵厂1993年生产制造,型号为DL12A-15×20的立式筒袋泵为研究对象,针对其在输送拔头油工作过程中出现异常振动的现象进行了振动分析和减振措施研究。通过立式筒袋泵工作原理和结构组成研究,分析了立式筒袋泵转子、泵壳、机械密封等部件的结构特点,及各组成部件结构和安装情况对泵异常振动的影响。介绍了频谱分析技术在振动故障诊断中的应用,分析了振动分量频率与异常振动间的关系,为立式筒袋泵异常振动实时监测和机理分析提供了理论基础。根据现场实际情况选取立式筒袋泵的电机下轴承和机泵轴承作为实时监测位置,制定了详细的监测方案。利用状态监测仪器对振动部位进行监测,通过分析频谱数据初步判断机泵振动的原因。在此基础上,拆解泵体相关部件进行检测,查找出振动异常的真正原因,验证频谱诊断的准确性。通过综合分析得出:基础安装不良、介质汽化、电机轴承部件磨损和转子不对中是立式筒袋泵异常振动的主要原因。针对发现出来的原因,提出相应的整改措施,解决振动超标问题。提出了增加微小流量线、加强机泵筒体外部支撑等改造措施,降低介质汽化和共振对立式筒袋泵自有振幅的影响,从而减小振动异常对立式筒袋泵的损害,达到节省维护时间、节约维修费用的目的,也给其他立式筒袋泵异常振动的解决提供了理论基础。
[Abstract]:In order to cooperate with the 6 million t / a refining plan of Daqing Refining & Chemical Company, the problem of long period smooth operation of refinery unit is solved. Taking the vertical cylinder bag pump made in Dalian acid-resistant pump factory in 1993 as the research object, the vibration analysis and vibration reduction measures are carried out for the abnormal vibration in the process of conveying the pull-out oil. By studying the working principle and structure composition of vertical cylinder bag pump, the structural characteristics of rotor, pump shell and mechanical seal of vertical cylinder bag pump are analyzed, and the influence of the structure and installation of each component on the abnormal vibration of pump is analyzed. The application of spectrum analysis technology in vibration fault diagnosis is introduced. The relationship between vibration component frequency and abnormal vibration is analyzed, which provides a theoretical basis for real-time monitoring and mechanism analysis of abnormal vibration of vertical cylinder bag pump. According to the actual situation in the field, the bottom motor bearing and pump bearing of vertical cylinder bag pump are selected as real-time monitoring positions, and a detailed monitoring scheme is established. The vibration position is monitored by state monitoring instrument, and the reason of pump vibration is preliminarily determined by analyzing the spectrum data. On this basis, the relevant parts of the pump body are disassembled to detect the real cause of the abnormal vibration, and the accuracy of the spectrum diagnosis is verified. Through comprehensive analysis, it is concluded that poor foundation installation, medium vaporization, wear of motor bearing parts and misalignment of rotor are the main causes of abnormal vibration of vertical cylinder bag pump. To solve the problem of vibration exceeding the standard, the corresponding rectification measures are put forward. In order to reduce the influence of medium vaporization and resonance on the self-amplitude of cylinder bag pump, it is proposed to increase the small flow line, strengthen the external support of the pump cylinder body, and reduce the damage caused by the abnormal vibration of the cylinder bag pump and save the maintenance time. The purpose of saving maintenance cost also provides a theoretical basis for solving the abnormal vibration of other vertical cylinder bag pumps.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE964

【参考文献】