Modern Maintenance Strategy of Electronic Equipment in Complex Electromechanical System

In this paper, the failure mechanism of electronic equipment was analysed.Aiming at the limitation of traditional maintenance modes, modern maintenance strategy was putforward on the basis of reliability-centered maintenance ( RCM) combined with condition-basedmaintenance ( CBM) and maintenance efficiency review (MER). A maintenance management informationsystem was constructed for electronic equipment for the purpose of failure analysis, reliabilityevaluation, and maintenance decisions such as time, mode, and plan. The best maintenance time couldbe predicted with failure analysis and reliability evaluation, which was mainly influenced byenvironmental stress. Suitable maintenance modes should be determined from equipment importance,failure aftereffect, maintenance condition, and economical power so as to ensure equipmentreliability and decrease the requirement of the maintenance source.

Machinery and Equipment Maintenance Strategy and Choice

The advantages, disadvantages and characteristics of various maintenance strategies for modern mechanical equipment are analyzed. Combined with the system structure and functional characteristics of engineering equipment,it puts forward the selection method of maintenance strategies for different types of equipment and failure modes. The view of this article is that the comprehensive maintenance strategy, which is based on condition based maintenance(CBM) and combines various maintenance strategies. This will become the main development direction of engineering equipment maintenance.

Study on Equipment Selective Maintenance Strategy Based on Performance

In this paper, an equipment selective maintenance strategy based on performance is brought forward according to the situation in China, in which reliability, computer technology, condition monitoring and management theory is applied. The theory points of the strategy are put forward. The maintenance strategy has been applied in mine hoist system.

The Efficiency Analysis and A Market Decision Model on Equipment Maintenance

This paper presents and analyses the internal and external efficiencies of equipment maintenance, and presents that the objective of maintenance is the maximum external efficiency. It defines generalized reliability degree of equipment and deduces the correspondent calculating method. It overcomes the defect that traditional calculating method of reliability degree has, which only considers the factor of time not function, therefore we establish a market decision model of equipment maintenance based on it. This model can determine the marginal efficiency of maintenance investment and critical value of generalized reliability degree when it reaches break-even point. After combining the equipment maintenance with economical benefit of enterprise and marketing situation of products, an optimal maintenance strategy will be got. It provides a new method for scientific and rational decisions of equipment maintenance.

Reliability-Centered Maintenance-Based Maintenance Decision in New Nuclear Power Plants

Taking the project of introducing reliability-centered maintenance( RCM) into maintenance decision in an AP1000 nuclear power plant( NPP) under construction as the research object,an improved RCM methodology was proposed, and the application software and an RCM-based maintenance strategies management system were designed. In the pilot project,the RCMbased maintenance decision methodology had been applied to determining the maintenance strategies for two systems. Both the decision process and the results were described in this paper. The achievements of this project promoted the introduction and routinization of an advanced and effective maintenance decision mode in nuclear power field,which could provide valuable reference for new NPPs in China.

Reliability modeling of hydraulic system of drum shearer machine

The hydraulic system plays an important role in supplying power and its transition to other working parts of a coal shearer machine. In this paper, the reliability of the hydraulic system of a drum shearer was analyzed. A case study was done in the Tabas Coal Mine in Iran for failure data collection. The results of the statistical analysis show that the time between failures （TBF） data of this system followed the 3-parameters Weibull distribution. There is about a 54% chance that the hydraulic system of the drum shearer will not fail for the first 50 h of operation. The developed model shows that the reliability of the hydraulic system reduces to a zero value after approximately 1 650 hours of operation. The failure rate of this system decreases when time increases. Therefore, corrective maintenance （run-to-t^ailure） was selected as the best maintenance strategy for it.

Impact of Safety-Maintenance Practices on the Overall Performance of an Industry

The study aims to evaluate how safety-maintenance practices affect the mechanical engineering industry’s overall performance in Ghana. The study used a descriptive survey design technique to ascertain the type of maintenance engineering that was practiced in Ghanaian mechanical engineering workshops at the time of the study. In the mechanical engineering workshops, respondents provided both qualitative and quantitative data using a variety of data collecting instruments, with the quantitative approach being more common. The study employed Kumasi, Tamale, and Accra’s mechanical engineering workshops as a case study. The number of mechanical engineering workshop enterprises that made up the sample size for the questionnaire administration was sixty (60), chosen at random from the AGI membership registry. Primary data was gathered using interview guides and questionnaires. To analyse the data, descriptive statistics were employed. According to the study’s findings, mechanical engineering companies combined different maintenance techniques in order to best fit their organisational culture and equipment. Preventive shut-down, with a mean score of 4.78 and RII = 0.98, placing first (1st) in the Likert rating order, is the most frequently used maintenance system by respondents. The maintenance procedures employed by mechanical engineering organisations were influenced not only by their equipment and organisational culture but also by other factors such as cost, personnel expertise and external partnerships.

可靠性约束下的重型数控机床维修策略

针对TH65140重型数控机床的各个子系统进行危害度分析,制定经济高效的预防性维修策略。通过威布尔分布对重型数控机床进行可靠性建模,在可靠度约束下,建立以最小维修费用和最大可用度为目标的机床子系统定期预防性维修模型,对模型进行求解得到了最优的维修次数及维修间隔期,制定出了重型数控机床的预防性维修策略。

考虑环境影响的城轨多设备维修策略研究

针对城轨设备欠维修和过维修等问题,提出考虑环境影响的城轨多设备维修策略。考虑到外部环境因素对城轨设备运行状态的影响,构建一种考虑环境影响的可靠性评估模型;以单个城轨设备为对象,以设备维修成本最小化为目标构建城轨单设备维修模型;以多个同类型城轨设备为研究对象,引入机会维修以考虑各设备之间的维修时间相关性,以设备平均维修成本最小化为目标构建城轨多设备维修模型;以某地铁换乘车站4台自动检票机实际故障数据为例,研究结果表明,多设备维修策略能有效降低设备维修成本,在730d内可以为每台自动检票机在单设备维修策略的基础上进一步节约维修成本约3921元,维修成本减少约10.74%。考虑环境影响的城轨多设备维修策略能够使设备维修维护更加合理,为城轨设备维修决策提供理论依据。

考虑系统效能和风险的电网设备检修/退役策略协同优化方法

为提高电网设备检修和退役决策的科学性,提出了一种考虑系统效能和风险的设备检修/退役策略协同优化方法。首先分析了设备检修的故障率回退效应,并基于数据驱动建立BP神经网络模型对故障率曲线进行动态修正;其次从系统效能的角度分析检修与退役之间的交互影响,并提出综合成本投入和系统可靠性提升2种属性,其中成本指标包括设备投资成本、运行维护成本、故障成本、检修成本和折旧损失,可靠性指标则以系统期望缺供电量表示,进而基于前景理论,建立各指标的前景模型;然后以检修时间和退役更换时间为优化变量,以综合前景值最大为优化目标,以系统风险水平为约束建立检修/退役策略协同优化模型;最后采用遗传算法求解所提模型,并以某城市区域配电网的变压器设备为例,验证了所提方法的有效性。

机械设备的管理和维修措施及故障诊断分析

现代工业发展中,机械设备发挥着重要作用。若机械设备出现故障,必然会影响机械设备正常运行使用。为保障机械设备正常应用,做好机械设备故障诊断维修及管理工作具有重要现实意义。基于此,首先概述了机械设备常见故障问题,其次分析了机械设备故障诊断流程与技术,最后探讨了机械设备管理维护策略。

天基航天装备维修链体系构建与维修策略研究

目前天基航天装备维修在我国乃至世界上都是一大难题,亟需改变传统的维修模式,构建天基航天装备维修链,以适应天基航天装备在轨布局与航天任务的发展需求。在分析在轨维修的必要性、可行性与维修特点的基础上,区分地面、低轨道、高轨道、深空4层空间高度,构建了以航天指挥控制中心、维修需求节点、维修保障节点和物资储供节点为关键节点的天基航天装备维修链体系架构,研究了三类重要轨道高度上基于维修链的天基航天装备维修策略,为提升天基航天装备维修保障能力,构建高效、敏捷、柔性的天基航天装备维修链提出了设计参考。

基于可靠性的城轨设备定期维修研究

目前城轨设备维修周期的制定过于依赖设备维修指导手册、行业维修经验等,主观性较强,基于此,提出一种基于可靠性的城轨设备定期维修方法。构建一种考虑外部环境影响的可靠性评估模型以准确描述城轨设备的可靠性变化趋势;为优化城轨设备的定期维修周期大小,构建基于维修成本最小化的定期维修模型。以某地铁自动扶梯设备实际故障数据进行实例分析,结果表明,考虑外部环境影响的可靠性评估模型具有更小的残差平方和误差,其能准确表征外部温度、湿度对该自动扶梯运行状态的影响,且所提出的定期维修模型可使该自动扶梯在730天内节约维修成本约4220元,维修成本减少约11.72%。相关研究结果为城轨设备维修维护提供一定参考依据。

石油钻井设备的维护保养策略分析

石油钻井设备是石油勘探与开发的重要工具和核心工具。因此,保证其始终稳定运行十分重要。围绕石油钻井设备维护保养的重要性,首先总结了石油钻井设备的常见故障;其次,分析了设备维护保养现状;最后,立足常见故障及设备维护保养现状,探讨并总结了维护保养策略。旨在确保石油钻井设备始终具有良好的运行状态,能够帮助石油企业达到预期的经济效益目标。

苯乙烯装置换热器通过RCM策略优化维修

通过对苯乙烯装置换热器进行故障模式及影响分析(FMEA)以及逻辑决断分析,深入分析该装置换热器的功能故障、故障类型并确定维修方式,优化预防性维修工作间隔期并系统综合形成维修大纲,实现对装置换热器设备维修策略的优化。与现行的维修策略相比,经由以可靠性为中心的维修(下文称RCM)优化而确定的维修策略,有利于缩短维修时间,在确保设备平稳运行的条件下最大程度降低了维修成本,解决了“过修”“失修”的现象。通过RCM有效提高了苯乙烯装置换热器维修管理的针对性、实用性、科学性,实现了以最低的维修成本确保装置换热器运行的安全及可靠的目的。

煤矿机电设备的检修与优化

旨在深入研究煤矿机电设备的检修与优化策略,以提升煤矿生产效率和安全性。从煤炭行业的关键地位入手,探讨了机电设备的种类、功能及现存问题。通过详细分析检修技术,包括流程、方法、工具和安全考虑,提出了优化策略,包括性能分析、数据监测和先进技术应用。机电设备故障诊断与预防章节,强调了故障诊断的重要性,介绍了方法、工具、预防性维护和解决策略。机电设备性能评估与监控章节,强调了关注设备的评估指标、在线监控系统设计、数据分析和运行状态监测。通过对多个方面的综合研究,为煤矿机电设备的检修与优化提供理论支持和实践指导。

煤机装备RCM维修策略及实践分析

针对某煤矿煤机装备频繁出现故障的问题,介绍一种基于RCM的煤机装备维修策略。该维修策略先通过对煤矿现有煤机装备维修方式的整理与对比,进而从重要度或故障危害程度两个方面出发,选择最佳的维修方式。然后以此为基础,利用RCM理论对视情维修周期及定期维修周期进行优化。通过RCM维修策略的应用,可针对设备故障选择出最佳的维修方式,设计最佳的维修周期,有利于提升煤机装备的运行效果,确认该方法具有一定应用价值。

基于先进监测技术的氯碱化工设备状态评估与维护策略

探讨了先进监测技术在氯碱化工设备状态评估中的应用,提出了相应的维护策略,为氯碱化工行业的可持续发展提供理论支持和实践指导。

设备管理中的维修计划与设备可靠性分析

在现代工业生产中,设备管理是确保生产连续性和效率的重要方面。为了提高设备的可靠性和降低维护成本,研究了设备管理中的两个关键组成部分,维修计划和设备可靠性分析,并提出了一种全面的设备管理方案。通过实地案例分析,本研究验证了该方案的可行性,并展示了维修计划和可靠性分析对提高设备性能和延长寿命的实际效果。本研究不仅为铁建重工新疆有限公司的设备管理提供了科学指导,也为制造业其他企业提供了实用经验。

试析维修电工开展电器设备维修与维护的有效方法

电器设备维修与维护对于现代社会的正常运作至关重要,因此聚焦于维修电工在电器设备维护中的核心作用,探讨了维修与维护的有效方法。维修电工在保障设备性能和防止故障中扮演重要角色,是维持电器设备高效运作的关键。首先指出了电器维修行业目前面临的主要挑战,包括资源投入不足、缺乏严格的工艺流程支持,以及维修信息记录的不完整性。这些挑战不仅影响维修工作的效率,还可能增加安全风险。