Study of Enterprise Equipment Maintenance Management Integrated Information System Based on B/S

Equipment maintenance management integrated information system is an important constituent part of enterprise IMS (Intelligent Manufacture System). The system should make the best of all kinds of information sources around the enterprise, and meet the demand for agile production. This paper presents an implementation scheme of Integrated Equipment Maintenance Management Information System Based on Internet/Intranet and gives component division scheme of each tier. This scheme adopts a three-tiers mode of B/S (Browser/Server) and software programming module based on software reusing technology. This makes the system integrated and open, makes maintenance and updating convenient, and largely increases software safety and reusability.

Research on Integrated Analysis Method for Equipment and Tactics Based on Intervention Strategy Discussion

As the increase of the complexity of the information warfare,its intervention strategy needs to be designed in an integrated environment.However,the current research always breaks the internal relation between equipment and tactics,and it is difficult to meet the requirements of their integrated analysis.In this paper,the research status quo of the integrated analysis about equipment and tactics is discussed first,some shortages of the current methods are summarized then,and an evolvement mechanism of the integrated analysis for equipment and tactics is given finally.Based on these,a framework of integrated analysis is proposed.This method's effectiveness is validated by an example.

The integrated monitoring system for running parameters of key mining equipment based on condition monitoring technology

An integrated monitoring system for running parameters of key mining equipmenton the basis of condition monitoring technology and modern communication networktechnology was developed.The system consists of a client computer with functions ofsignal acquisition and processing, and a host computer in the central control room.Thesignal acquisition module of the client computer can collect the running parameters fromvarious monitoring terminals in real-time.The DSP high-speed data processing system ofthe main control module can quickly achieve the numerical calculation for the collectedsignal.The signal modulation and signal demodulation are completed by the frequencyshift keying circuit and phase-locked loop frequency circuit, respectively.Finally, the signalis sent to the host computer for logic estimation and diagnostic analysis using the networkcommunication technology, which is helpful for technicians and managers to control therunning state of equipment.

Current Status of the Integrated Circuit Industry in China--IC Special Equipment Industry by:Lithotechsolutions.org

1.Introduction In recent years,China's semiconductor equipment industry has made considerable progress,some key equipment have been developed,achieving a revolutionary breakthrough.Meanwhile,a great number of domestic equipment have been applied to large mass production lines,indicating new progress in industrialization.From the policy perspective,the state has continuously introduced policies to support the localization of the semiconductor industry,and has invested more than 100 billion yuan to boost the development of the semiconductor industry chain since 2014.

基于ABR-MBBR一体化装置处理村镇污水的试验

随着我国村镇污水处理规模的快速发展,众多村镇污水处理技术应运而生,文章创新设计采用了厌氧折流板反应器(ABR)-二级移动床生物膜反应器(MBBR)-纤维束膜处理工艺的一体化村镇污水装置,该装置主要由ABR池、二级MBBR池、竖流式沉淀池和纤维竖膜池组成。试验以上海某城镇污水处理厂进水模拟村镇污水进水,通过对其进行挂膜、驯化阶段研究,探究了该装置的处理效果。结果表明,该装置对进水水质波动具有一定的耐冲击负荷,通过对MBBR池间接性曝气等工艺调整,可实现较好的脱氮除磷效果。通过为期一个多月的启动试运行,该设备对COD_(Cr)、氨氮、TN、TP、SS指标的去除率分别稳定在86%、86%、46%、53%、85%以上,出水水质符合上海市地方标准《农村生活污水处理设施水污染物排放标准》(DB 31/T 1163—2019)中的一级B标准,对我国村镇污水处理技术的选择具有一定的借鉴意义。

Innovative integrating of hot-dipped(aluminizing) galvanizing lines and engineering of related equipment

Based on the continuous hot(aluminizing) galvanizing lines and related non-standard equipment of Meishan Steel,this paper presents the main contents of such integrated engineering and designing of equipment for the two hot-dipped galvanizing lines,as well as innovative techniques and their features.Led by Cold Rolling Project Department of Meishan Steel,Baosteel Engineering and Technology Group Co.,Ltd. ,working as the responsible unit of this project,develops key technologies and integrates the system by combining the equipment design and development capacity of Baosteel Engineering,research and development capacity of Research Institute of Baosteel,process production and equipment maintenance experience of Cold Rolling Plant,Equipment Department and Manufacture Department of Baosteel Corporation.Core technologies of the two lines are developed and designed through original and integrated innovation and innovation after digestion,focusing on eight core techniques in process equipment,annealing furnace,fluid installation and EIC system.As a result of integration in key process equipment,industrial furnace and EIC control,the cold rolling hot dipped(aluminizing) galvanizing lines take on a new look and reach an annual capacity of 200 000 t galvanized products and 250 000 t galvanized aluminium base strips respectively.These two world advanced lines are able to produce hot-dipped galvanizing products with high quality surface and fine shape,such as household appliance board and senior construction board.As a result, the process and equipment technology of the lines have formed domestic intellectual property.Thus,the technology has reference value for self-integration and equipment technology innovation of similar lines.

Predicting stability of integrated circuit test equipment using upper side boundary values of normal distribution

In response to the growing complexity and performance of integrated circuit(IC),there is an urgent need to enhance the testing and stability of IC test equipment.A method was proposed to predict equipment stability using the upper side boundary value of normal distribution.Initially,the K-means clustering algorithm classifies and analyzes sample data.The accuracy of this boundary value is compared under two common confidence levels to select the optimal threshold.A range is then defined to categorize unqualified test data.Through experimental verification,the method achieves the purpose of measuring the stability of qualitative IC equipment through a deterministic threshold value and judging the stability of the equipment by comparing the number of unqualified data with the threshold value,which realizes the goal of long-term operation monitoring and stability analysis of IC test equipment.

AO-MBBR-MBR工艺在造纸废水深度处理中的中试应用

针对目前造纸行业废水生化处理工艺运行效果差、不稳定的问题,采用处理工艺为AO-MBBR-MBR的中试设备处理造纸废水,研究中试设备处理造纸废水过程中的污泥量变化、COD_(Cr)和TN去除效果。结果表明:M BBR填料为微生物提供良好的聚集场所,有利于形成体积较大的菌胶团,提高了好氧区污泥浓度。系统运行稳定后,COD_(Cr)及TN的去除率均在90%以上,出水CODCr和TN满足《地表水环境质量标准》(GB3838-2002)中的Ⅳ标准。

Independent integration practice on revamping 4200/3500 mm medium and heavy plate rolling mill of Bayi Steel in terms of process and make-up equipment

This study systematically reviews and summarizes relocation and revamping project of medium and heavy plate rolling mill in Bayi Steel.After detailed analysis was made on the main deficiency and problems of the original production line of Pudong Steel,systematical integration and improvement for the process and equipment were carried out accordingly.Through innovative practice of integration,Baosteel Engineering has greatly improved the technical process and equipment make-up,as well as the grades and quality of the products.The original man-operating line is redesigned into an automatic system controlled by Level 2 computer,reaching the advanced technical level of home-made medium and heavy plate production line in recent years.The project is constructed in two phases;The original product mix of Pudong Steel is maintained as much as possible in Phase I.After 3 500 mm single stand finishing mill is put into operation, capacity of hot- rolling medium and heavy plate reaches 650 000 t/a,with the maximum thickness at 40 mm.Equipment or facilities are reserved for production of pipeline steel and other grades.Pipeline steel, vessel plate,wind power plate and other TMCP and heat treatment products are projected in PhaseⅡ.After 4 200 mm roughing mill and its matched facilities are put into operation,capacity of hot-rolling medium and heavy plate will reach 120 000 t/a,with the maximum thickness at 80 mm.Through the optimization of process equipment and its function,the relocated medium and heavy plate mill production line has reached advanced level among similar domestic mills.The prominent achievements of the project are the revamping of thickness control system of the finishing mill and the newly installed shape control system.Automation control of the whole line is realized.

电解-MBBR一体化反应器处理农村分散式点源污水

针对农村分散点源生活污水覆盖面广、分散性强、水质水量不均衡、收集处理率低等特点,通过电解-MBBR一体化反应器处理实际村镇分散生活污水。分阶段调整运行条件,重点检测工艺对COD、氨氮、TP的去除效果并分析原因,验证一体化反应器运行效果。结果表明:对COD、氨氮和TP的去除率分别为91.74%、98.32%、90.80%,出水水质达到《城镇污水治理厂污染物排放标准》(GB 18918—2002)一级A标准,为村镇分散点源污水治理提供参考。

Key Technologies and Development Trends in Advanced Intelligent Sawing Equipments

As a starting point in equipment manufacturing,sawing plays an important role in industrial production.Intelligent manufacturing equipment is an important carrier of intelligent manufacturing technologies.Due to the backwardness of intelligent technology,the comprehensive performance of sawing equipments in China is obviously different from that in foreign countries.State of the art of advanced sawing equipments is investigated along with the technical bottleneck of sawing machine tool manufacturing,and a new industrial scheme of replacing turning-milling by sawing is described.The key technologies of processing-measuring integrated control,multi-body dynamic optimization,the collaborative sawing network framework,the distributed cloud sawing platform,and the self-adapting service method are analyzed;with consideration of the problems of poor processing control stableness,low single machine intelligence level,no on-line processing data service and active flutter suppression of sawing with wide-width and heavy-load working conditions.Suggested directions for further research,industry implementation,and industry-research collaboration are provided.

A2O-MBBR工艺在农村生活污水处理中的应用

针对农村生活污水水质水量变化大的特点,应用基于A2O-MBBR工艺的一体化设备对农村生活污水进行处理,考察了该工艺的处理效果、经济指标和维护难度。实际运行表明:COD、氨氮、TP、TN平均去除率可分别达到78.58%、99.40%,95.94%,92.96%;此外,设备投资及运行成本较低,吨水能耗仅为0.7~0.8 kW·h/m^(3),节能效果明显且维护方便,适用于处理农村生活污水。

O+A/O-MBBR一体化装置处理食品加工废水工程实例

针对某食品加工废水COD和氨氮浓度高,可生化性好,固体杂质含量高的特点,采用O+A/O-MBBR一体化装置进行处理。介绍了废水处理工艺流程、主要工艺单元设计参数、运行效果及运行费用。工程运行结果表明,O+A/O-MBBR一体化装置运行稳定,处理后的食品加工废水满足GB 13457—1992《肉类加工工业水污染物排放标准》中表3肉制品加工一级排放标准的要求(ρ(COD)≤80 mg/L,ρ(氨氮)≤15 mg/L),废水处理费为3.6元/m^(3)。

O+A/O-MBBR一体化装置挂膜启动研究

在水温为15℃,初曝区、好氧区溶解氧(DO)浓度分别为1.5 mg/L、4 mg/L,悬浮填料填充率为50%的条件下,本试验采用人工接种挂膜启动O+A/O-MBBR一体化装置,研究其挂膜启动过程。结果表明,运行至35 d,系统对化学需氧量(COD)、氨氮的去除率分别为93.06%、87.87%,生物膜量稳定在20 mg VSS/g填料左右,成功实现了O+A/O-MBBR一体化装置的微生物驯化培养。

倒置A^(2)/O-MBBR一体化设备处理农村污水试验

针对农村生活污水分散且收集困难等特点,开发了以倒置A^(2)/O+移动床生物膜反应器(MBBR)+气提回流作为试验装置主体工艺的庭院式一体化处理设备。以调节池处理后的出水作为原水,装置好氧池内采用活性污泥挂膜法接种污泥。经过一个月稳定运行,试验装置出水平均COD、NH_(3)-N、TN、TP分别为47.79、4.14、15.75、1.70 mg/L;COD、NH_(3)-N、TN、TP平均去除率分别为75.32%、85.29%、60.68%、57.46%。在抗瞬时冲击试验中,试验装置在瞬时进水量为设计进水量200%的情况下仍能稳定运行,出水平均水平均COD、NH_(3)-N、TN、TP分别为54.23、0.63、14.75、1.62 mg/L;COD、NH_(3)-N、TN、TP平均去除率分别为83.89%、98.83%、70.37%、69.85%。经一体化设备处理的出水COD、NH_(3)-N、TN均能达到《城镇污水处理厂污染物排放标准》(GB18918-2002)一级B标准,TP达到《城镇污水处理厂污染物排放标准》(GB 18918-2002)二级标准。

浅析低浓度餐厨垃圾废水一体化设备MBBR处理工艺

采用一体化设备MBBR工艺对重庆市某餐厨垃圾处理厂低浓度废水进行处理,系统介绍了一体化设备工艺、分区设计、受力分析、流态模拟,并通过该设备从调试运行到连续稳定运行的水质变化情况,分析系统处理效果。结果表明,该一体化设备最大应力值为58.248 MPa,强度校核评定结果安全,且流态模拟显示污泥沉降功能良好、汽水混合效果好。COD去除率达90%,氨氮去除率达90%,TN去除率达70%,SS去除率达95%,处理效果稳定,出水优于《污水综合排放标准》(GB8978-1996)中的三级标准。项目投资费用为1.5万元/t,设备运行费用约为6元/t。该设备对低浓度餐厨废水的处理效果好,运行稳定,运行费用低,可为其他餐厨废水项目提供参考。

舰船动力设备抗冲击评估方法综述

舰船动力设备的抗冲击能力是舰船安全稳定运行的重要保障,而合理的评估方法可以较为方便地获得动力设备的抗冲击特性预测结果。首先,将冲击过程分为低/高速碰撞冲击过程和非接触爆炸冲击过程,基于主从系统关系,阐述舰船设备非一体化与一体化抗冲击方法,总结舰船动力设备的抗冲击研究进展,提出舰船动力设备抗冲击领域的重点研究技术。然后,结合舰船设备一体化方法(分为等效静力法、动态设计分析法及时域分析法)的特点,总结得出:等效静力法仅适用于低频影响的结构简单动力设备;动态设计分析法忽略了邻近设备、隔振系统及船体结构对冲击输入载荷的影响;时域分析法仅适用于爆炸冲击等特定场景或冲击信号输入;而舰船设备一体化考虑了船体结构–基座–隔振系统–动力设备形成的多自由度系统,其计算结果更贴近于实船工况,但建模和计算成本较高。最后,展望了舰船动力设备抗冲击的重要发展方向,包括评估方法的准确选取、抗冲击试验台的合理改进、冲击响应信号提取分析、动力设备多场耦合作用分析、动力设备物理模型简化研究、内部流动介质等效替代研究、数据挖掘和深度学习方法融合等。

考虑柔性设备加工能力的综合调度算法

现有柔性综合调度研究中,没有考虑设备系统的协同加工能力,从而降低了设备系统高密加工和快速加工能力。针对此问题,文章将柔性设备可进行加工的工序数作为优化对象、以竞争资源较为紧张的设备资源为优化要素,提出了考虑柔性设备加工能力的综合调度算法(ISA-CPCFE):首先,采用优先调度层级较高与加工时长较短的工序的策略,提高了工序并行调度的力度;其次,提出一种最小化调度标尺与动态调整柔性设备优先级的策略,进一步提高了设备紧凑调度的力度。最后,将ISA-CPCFE算法与基于剪枝分层、基于设备驱动、基于实际路径、基于逆序层优先的算法进行对比实验。结果表明:ISA-CPCFE算法实现了复杂产品加工时间更短、柔性设备系统整体利用率更高的优化目标,调度效果更优。

航天总体设计的智慧研发模式

新一代航天复杂装备的发展,亟须改变传统研制模式,提升总体设计水平,缩短研制周期,降低试验成本。同时,我国航天装备研制过程积累的大数据资源没有形成有效的知识积累与重用手段,并且多专业强耦合的总体设计研制流程信息化程度低,导致专业内部和专业之间协同不高效,难以驱动装备总体方案设计实现敏捷、高效、最优。因此,如何建设智慧研发体系成为当前航天总体设计面向数字化、智能化融合发展的主要焦点问题。本文介绍了航天装备总体设计的智慧研发模式,分析了难点与需求,提出了实施途径、模型体系、研制流程和支撑平台架构,以研制流程高效可控、数据智能学习、知识驱动设计、系统耦合验证为构建思路,用于指导建设新一代航天装备总体设计的智能化、协同化研发环境,支撑产品自主研发能力和产品研发活动规范高效地开展,指导设计持续改进,推动航天装备数字化研制。

科教融合背景下高校贵重仪器设备使用情况分析与探讨

贵重仪器设备是高校完成教育教学与科学研究的重要物质基础。以科教融合视角为背景,对当前高校贵重仪器设备在教育教学与科学研究领域的实际使用情况进行分析,梳理贵重仪器设备面向本科教学开放过程中存在的问题及原因,并提出解决对策与建议,以提升并充分发挥贵重仪器设备在科教融合过程中的作用,有效实现人才培养与科学研究相结合,助力国家培养高水平人才。