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本文系统地阐述了在三种不同设备维修模式下的设备维修成本控制特点,并根据自己企业的设备状况和生产经营管理要求,探讨了三种设备维修模式和维修管理方法的有机结合,最终实现设备维修资金效益最大化。 相似文献
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对于设备的维修,常规方法为事后维修。事后维修方法的最主要特点在于:被动的进行维修,在相关设备出现运行故障的情况下,再行维修。即便事后能够达到维修设备的目的,但由设备运行故障所造成的损失也是无法弥补的。为解决此问题,后期以定期方式进行设备维修工作。尽管此种方式避免了造成严重的经济损失,但大多适用于成套性的大型设备,对于机泵一类小型设备而言,适应性不佳。在设备诊断以及设备监测技术的发展背景下,预知维修在机泵设备维修工作中得到了极为广泛的应用,综合优势更加的突出。本文以此为研究对象,就复杂工况下,机泵设备预知维修的操作要点展开详细分析,希望能够为后续相关实践工作的开展提供一定的参考与帮助。 相似文献
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李奇璞 《中国石油和化工标准与质量》2014,(5):249
本文以电动机设备为研究对象,针对化工行业特点,从管理角度及经济角度对工厂设备预防性维修工作进行了可行性分析,并有针对性的建立以可靠性为中心的预防性维修模式,通过对设备维修费用的数据统计,验证了新型维修模式的可行性,为化工行业设备维修决策提供了科学依据。 相似文献
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与新型干法水泥生产设备和技术的先进性相比,在设备维护维修方面,传统的事后或定期维修模式已显得落后。从我国新型干法水泥生产线设备维修方式的演变出发,分析了预知性维修的优点和现状和存在的问题,并提出新型干法水泥生产设备维修应将自主性维护、预知性预防性维修包含在一个综合的维修管理计划中,形成一个以可靠性为中心的节约成本支出的预防维修管理体系。 相似文献
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随着水泥生产线设备大型化、现代化程度的提高,设备故障所带来的意外停机停产如不能在第一时间内有效解决,将严重影响企业的正常安全生产该文通过一个维修案例,论述了高分子复合材料技术在设备维修中的应用,为设备维修管理工作提供了一种全新的工作思路,是对传统维修观念的突破. 相似文献
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石油化工设备的维修是保证设备安全运行的重要措施之一。设备维修主要有恢复设备技术性能,发现、排除、消除故障及故障隐患及可将设备使用寿命延长等优点。目前,我国石油化工行业已具备相当大的规模,存在设备维修种类多、范围广、数量大等特点。但相对于其他发达国家而言,我国的设备维修行业起步较晚,维修技术尚不成熟,仍有许多问题存在于设备维修工作中。而这些问题都将会致使设备使用可靠性差及发生重大事故等。基于此,本文主要就石油化工设备维修相关问题展开了探讨。 相似文献
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玻璃深加工数控系统种类繁多,故障复杂,维修困难,本文根据对设备的维修经验,详细介绍了数控设备的维修方法和步骤,并列举了相关实例. 相似文献
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乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
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The miscibility of various amorphous polybutadienes with mixed microstructures of 1,4 addition units (cis, 1,4 and trans 1,4) and 1,2 addition units have been investigated. The studies here involved optical transparency, differential scanning calorimetry, and small angle light scattering. It was found that a 90 percent (cis) 1, 4 addition polybutadiene was immiscible with high (91 percent) 1,2 addition polybutadiene. Reduction of the 1,2 content to 71 percent induced an upper critical solution temperature (UCST) with the cis 1,4 polymer. Polybutadienes with 50 percent and 10 percent 1,2 contents were miscible above the crystalline melting temperature of the cis 1,4 polybutadiene. Immiscibility of the 91 percent 1,2 addition polymer was also found with a 10 percent 1,2 polybutadiene. The latter polymer also exhibits an UCST with the 71 percent 1,2 polymer. The results are used to interpret the characteristics of blends of polybutadienes of varying microstructure. 相似文献
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以F类粉煤灰为例,详细介绍了测定粉煤灰中烧失量的步骤、计算数学模型、影响测量不确定度的因素以及各项测量不确定度分量评定,人员、设备、材料、方法、环境都是影响测量不确定的因素。 相似文献
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The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003 相似文献
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我厂3号回转窑(Φ4m×60m)生产线在1996年年底由SP窑(产量912t/d)改为NSP窑(产量1320t/d),预分解系统为四级旋风预热器带离线式分解炉 相似文献
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Conclusions It is significant that the purification on a single passage of viscose through porous ceramic corresponds to the result of a two-stage filtration of it in industrial filter-presses with standard fillings.Kiev Combine. Kiev Technological Institute of Light Industry. Translated from Khimicheskie Volokna, No. 3, pp. 20–22, May–June, 1969. 相似文献