共查询到20条相似文献,搜索用时 62 毫秒
1.
文章在介绍了设备状态监测与故障诊断技术的概念和主要内容的基础上,阐述了设备状态监测与故障诊断技术发展的几个阶段,分析了设备状态监测与故障诊断技术的在企业应用情况和发展趋势,充分说明了在企业中推广设备状态监测与故障诊断技术的必要性。 相似文献
2.
3.
为了适应企业现代化设备管理的现状和要求,基于J2 EE技术、数据库管理技术以及现代信号处理和故障诊断技术,设计了风机远程监测与故障诊断系统。该系统对大型风机机组群的安全运行和提高企业信息化管理水平发挥了重要作用 相似文献
4.
5.
6.
振动在线监测与故障诊断系统在鼓风机上的应用 总被引:1,自引:0,他引:1
介绍振动在线监测与故障诊断系统的组成、数据采集器及软件。利用该系统对硫酸装置1200kW空气鼓风机实施在线状态监测与故障诊断,可确保机组安全可靠地运行。根据频谱分析诊断故障的类型及原因,采取针对性措施,可节约维修时间和费用。对振动在线监测与故障诊断系统今后的发展方向提出建议。 相似文献
7.
8.
9.
为降低水泥厂离散设备的运维成本和售后服务成本,利用4G物联网技术将关键生产设备转换为IOT设备,通过PLC系统采集现场数据,基于智能网关和MQTT协议将数据传输至云平台,实现远程IOT设备数据的在线获取和远程传输,提高数据获取效率和运维管理效率.该技术极大地方便了技术人员对水泥厂各离散设备进行远程维护、故障诊断. 相似文献
10.
11.
Solid solutions of diphosphates of zinc and copper and of zinc and cobalt were synthesized from mixtures of pure diphosphates at temperatures up to 1000°C. Their X-ray diffractometry patterns varied continuously from one end member to the other. Solid solutions of orthophosphates of composition Zn3−x Cox(PO4 )2, with x = 0.4–1.6, were formed at temperatures up to 950°C; all exhibited the structure of γ-Zn3 (PO4 )2. Solid solutions of orthophosphates of composition Zn3−x Cux (PO4 )2 exhibited more-complex behavior. At 1000°C and copper contents of 20–80 mol%, a phase that is related to Cu3 (PO4 )2, termed here the "ε-phase," predominated. At 850°–950°C and in the region from 20 mol% to ∼33 mol% of copper, the solid solutions (the "η-phase") adopted the structure of graftonite. At 800°–900°C and 10–15 mol% of copper, the solid solutions exhibited a new structure (the "δ-phase"), which we found to be related to the mineral sarcopside. At temperatures 950°C, the solutions that contained 5–15 mol% of copper (the "β-phase") had the structure of β-Zn3 (PO4 )2, whereas at 800°–850°C, solutions with 5 mol% of copper (the "-phase") exhibited the structure of γ-Zn3 (PO4 )2. Attempts to synthesize Cu+ ZnPO4 and Cu+ Cu2+ Zn3 (PO4 )3 were unsuccessful. 相似文献
13.
14.
为了提高油田的生产效率,设计最佳的油气集输处理的工艺流程,更好地完成油气水分离处理的任务。对油气集输工艺技术进行优化,发挥高效油气水分离处理设备的优势,提高油气水处理的质量,保证油气集输工艺顺利实施,获得最佳的油田产量外输。 相似文献
15.
建设创新型国家是我们中华民族的历史责任。“自主创新、重点突破、支撑发展、引领未来”的16字方针应当成为我们未来创新活动的指南。建设创新型国家把自主创新放在首位,并提出了引领未来的高标准要求。钢铁科技创新必须突出重点,抓住创新成果产业化这个关键,支撑起行业和国民经济的发展。 相似文献
16.
相比已经完善丰富的开采和勘探技术,油气的运输以及储存却仍然存在不足之处。我国对能源安全提出更加严格要求的同时,对区域经济的发展规划也有足够重视。因此,保障油气管道的安全则成为了我国能源安全战略的重中之重。在阐释油气管道现阶段在储运安全保障技术发展状况的基础上,分析了现存的问题及解决问题的手段,并指出未来可能使用的目标策略,为今后研究者提供一定程度上的借鉴经验。 相似文献
17.
18.
膜的污染和劣化及其防治对策 总被引:25,自引:0,他引:25
较为系统地介绍了膜污染和劣化的定义和特点,因膜污染和劣化而造成的膜性能变化,以及如何预防、减少或清除膜污染和劣化的一些通用方法。 相似文献
19.
20.
James L. White David G. Salladay David O. Quisenberry Donald L. MacLean 《应用聚合物科学杂志》1972,16(11):2811-2827
Gel permeation chromatographic (GPC) and thin-layer chromatographic (TLC) studies of polystyrene, polybutadienes (BR), and their copolymers (SBR) have been carried out. GPC primarily separates them on the basis of molecular size, and TLC, on the basis of composition. Methods of obtaining absolute molecular weight distributions for BR and SBR based upon variations of the Strasbourg Universal Calibration procedure are described. In particular, [η]–M relationships in both the GPC solvent (THF) and in a second solvent (toluene) were used; in addition, results of statistical mechanical calculations for \documentclass{article}\pagestyle{empty}\begin{document}$\overline {s^2 }$\end{document} (based on the assumption of negligible steric hindrance and freely rotating bonds) were applied. An experimental comparison of these methods was carried out, and use of the [η]–M relationships for both solvents was found to give satisfactory results. The predictions of the statistical theory were too low. A detailed study of polymer–solvent–gel interaction in the GPC unit was made through investigation of ternary phase equilibrium in the (polystyrene)–THF–(polymer) system. The polymers studied included BR and SBR with varying styrene contents. Experimental techniques for TLC separations of BR, SBR, and polystyrene according to the composition are described. 相似文献