基于多层流模型的矿井提升机可靠性分析及故障诊断的研究

发布时间：2018-11-07 12:16

【摘要】：矿井提升机是用来运输物料、人员升降的设备,提升机的提升量决定了煤炭的生产量,一旦出现故障,就会影响煤炭的开采量。矿井提升机主要包括机械系统、液压系统和电控系统三大部分,每一组成部分又有各自复杂的内部结构,其中任何一个部分故障,都会对生产造成影响和经济损失。基于多层流模型的可靠性分析(MFMRA)方法可以将复杂的系统分解为不同的功能层,它与传统可靠性分析方法不同,它是以成功为导向的系统可靠性分析技术,可以直接对系统进行建模和仿真。通过MFMRA计算,得出系统各目标可靠度,并对系统进行评价。对警报信息进行分析,通过多层流模型的路径进行故障搜索,从而定位故障,达到故障诊断的目的。通过研究多层流模型(MFM)基本原理、建模方法和故障诊断的规则,将MFM应用于矿井提升机系统,分别对液压站和主回路进行MFM建模。应用MFMRA进行可靠性计算,得出了各个目标的可靠度,用GO法验证计算结果的正确性。引入时间点的概念,得出了液压站正常工作过程可靠度随时间的变化规律。建立了基于多层流模型的安全制动过程故障树和基于多层流模型的故障类型及影响分析(FMEA)。运用故障诊断的规则,建立了基于MFM的电控系统故障诊断分析过程,并且应用PSCAD电路模拟软件搭建了一个电力系统仿真模型,验证基于MFM故障诊断方法的正确性。最后应用C语言,开发了 MFM图形化建模平台,提高了 MFM建模的效率。本文从可靠性和故障诊断的角度,分别对提升机液压站和电控系统进行可靠性分析和故障诊断。一方面提高了提升机运行的安全可靠性,并可对系统运行状况进行预测,使其可以更好的实现安全生产;另一方面当发生故障时,可以快速的寻找出故障源,大大缩短了系统维修的时间。对保障煤矿安全生产以及提高提升机可靠性具有重大意义。
[Abstract]:Mine hoist is used to transport materials, personnel lifting equipment, hoisting capacity determines the production of coal, once there is a fault, will affect the amount of coal mining. Mine hoist mainly includes mechanical system, hydraulic system and electric control system, each part has its own complex internal structure, any part of which will have an impact on production and economic losses. The reliability analysis (MFMRA) method based on multi-laminar flow model can decompose the complex system into different functional layers. It is different from the traditional reliability analysis method. The system can be modeled and simulated directly. Through MFMRA calculation, the reliability of each target of the system is obtained, and the system is evaluated. The alarm information is analyzed and fault search is carried out through the path of multi-laminar flow model so as to locate the fault and achieve the purpose of fault diagnosis. By studying the basic principle, modeling method and fault diagnosis rules of multi-laminar flow model (MFM), MFM is applied to mine hoist system, and the hydraulic station and main loop are modeled by MFM, respectively. The reliability of each target is obtained by using MFMRA, and the correctness of the calculation result is verified by GO method. By introducing the concept of time point, the variation rule of reliability with time in normal working process of hydraulic station is obtained. The fault tree of safe braking process based on multi-laminar flow model and the fault type based on multi-laminar flow model and its influence analysis (FMEA). Are established. The fault diagnosis and analysis process of electronic control system based on MFM is established by using the rules of fault diagnosis, and a power system simulation model is built by using PSCAD circuit simulation software, which verifies the correctness of fault diagnosis method based on MFM. Finally, the MFM graphical modeling platform is developed with C language, which improves the efficiency of MFM modeling. From the point of view of reliability and fault diagnosis, the reliability analysis and fault diagnosis of hydraulic station and electronic control system of hoist are carried out in this paper. On the one hand, it improves the safety and reliability of the hoist operation, and can predict the running condition of the system, so that it can better realize the safety production; On the other hand, when the fault occurs, the fault source can be found quickly, which greatly shortens the time of system maintenance. It is of great significance to ensure the safety of coal mine production and improve the reliability of hoist.
【学位授予单位】：山东科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD534

【参考文献】