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油库是储存和供应石油产品的专业性仓库,是协调原油生产和加工、成品油运输及供应的纽带.油库收发油系统的自动化程度是油库现代化水平的主要标志之一.文中是为某油库设计的基于PLC和组态王的自动收发油控制系统.该系统采用上下位机控制模式,上位机采用工控机 组态软件,下位机采用Q系列PLC,充分发挥各自优势,实现油库收发油作业的完整监控工作. 相似文献
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以山西平朔油库为背景,基于PLC与组态王提出了油库自动计量与控制系统的设计思想和实施方案.采用PLC为下位机实现控制系统的实时数据采集和状态判别,以工控机为上位机结合组态软件KingView6.52实现数据的计量与综合管理,全面改善了系统设备状态显示、计量精度以及相关数据统计等功能,有效提高了油库生产和管理的自动化水平,对油库企业的发展有一定意义. 相似文献
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随着社会经济的不断发展,我国也越发重视仓储油库消防安全问题.以仓储油库消防安全技术为基础,加大了对其的研究,了解仓储油库起火的主要原因,总结其特点,才能对仓储油库消防安全进行完善,制定相应的制度,在实际工作中进行落实,构建消防报警系统.本文主要针对仓储油库消防安全技术进行深入分析,以此促进仓储油库消防工作更好地开展. 相似文献
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自动化管理系统是油库改造的主流方向,文章介绍了一种可适应低温特殊环境属性的RTU控制发油系统,可以保证北方冬天油库正常运营。文章中对RTU控制器原理和系统结构进行详细论述,对控制系统的硬件和软件分别进行了设计实现。采用分散式控制方式可以有效减小油库整体事故的发生概率,提高了油库发油的质量和效率,并且方便实现油库日后的扩建。 相似文献
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近年来,我国航空工业的快速发展,航空煤油油库成为重要的基础设施。油库作为航空煤油使用安全的保障,其存在一定安全隐患,容易受到各种内外部因素的影响,造成重大的安全事故。因此,需要对油库的建设进行合理规划。当前,装配式在油库建设中的应用与创新成为行业的热门话题。基于此,本文探讨了当前油库建设面临的困境,并提出了装配式技术应用在油库建设中的价值和方法,同时,探讨了其未来的创新方向。 相似文献
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董宝力 《机械工程与自动化》2001,(1):18-20
由于油膜轴承的供油量对轴承的性能影响很大,一种基于流体动力润滑理论同时又具有指导性的最大供油量的计算方法对于理论研究和实际应用十分有益.研究了轴承供油量与其负荷、几何参数及粘度等诸多因素之间的关系,为轴承的设计和校核提供了依据. 相似文献
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《计算机集成制造系统》2015,(2)
为了有效实现原油储运调度与调和优化,针对原油的码头接卸、中间站场及油库的收油和下输、原油调和进厂等业务环节,综合考虑操作与输送能力等约束和流程中的不确定性因素,采用数学规划方法,建立原油储运调度与调和优化一体化模型,利用启发式规则简化模型进行求解,实现原油多周期调度优化,对原油处理过程进行精细化管理。以中石化某原油运输线为例,通过该优化方法有效提升了原油调度精确性,降低了原油运输存储成本,为炼油生产提供了有力支撑。 相似文献
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Some performance properties for turbine, hydraulic and gear oils were correlated with changes in chemical structure for incorporated base oils. Blends with different viscosity grades were formulated from different neutral oils, brightstocks and additives. Different statistical approaches were used to evaluate the degree of fit for these correlations. The derived models were considered at a minimum of 99% confidence. Results clarified the role of non-hydrocarbons and aromatic compounds, either by type or by content, in changing the performance behaviour for tested industrial oils. 相似文献
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Total vegetable oil greases are those in which both the lubricant and gellant are formed from vegetable oil. Vegetable oil may be used as a lubricant as such or, with appropriate structural modification, as an ester or alkylated ester. Total vegetable oil greases have the advantage of good biodegradability and conform to the requirements for high performance. Total vegetable‐oil based greases can be formed by mixing preformed soap and lubricant in the required proportions to form a grease with the desired properties. Alternatively, a grease can be formed from the same vegetable oil by simultaneous alcoholysis and saponification of the oil to form the lubricant and soap. The alkali used as a catalyst for the alcoholysis reaction serves as a reactant for the saponification reaction. The use of the appropriate proportion of oil, alcohol, and alkali will thus form a grease of the desired composition. A simultaneous reaction scheme to form sodium and lithium grease using castor oil has been studied. The alcoholysis reaction is separately studied for its kinetics, and the kinetics of the alcoholysis and saponification reaction are reported. Greases with 20% soap have been formed and their properties evaluated. 相似文献
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