圆柱状一次锂电池抽真空注液机构的分析与改进

圆柱状一次锂电池的注液机是原生产CR123A电池注液机改造后的设备,由于两种电池的注液量不同,电解液的成分与物理性质也不相同,导致在生产过程中抽真空注电解液机构注液量不稳,电解液被真空泵吸入过滤装置,电解液消耗量大,造成电解液无谓的浪费,增加了电池的原材料成本。基于此,通过研究注液机构的工作原理,分析注液量不稳定及电解液被真空泵吸入的原因,提出合理改进建议,解决注液量不稳及电解液被真空泵吸入过滤装置的问题。     

一种多级串联雾化吸收装置研究

论文所研究的是一种车载箱式废气处理系统中用于精细化处理工业、航天、航空等领域废气的新型装置。该装置的特点为采用传统吸收塔与储液箱组合的特殊结构,待处理废气通过该装置及连接金属管道沿“S”型曲线流动,既达到了废气达标排放的目的,又满足车载设备空间有限、质量不能超重的技术条件。该装置的研究,解决了传统车载废气处理系统不能满足当前待处理废气大流量、多工况、长时效的技术难题,既提高了废气处理效率,又增强了废气处理续航能力。     

气液混合比的选择

一、在一个大气压情况下,气液混合比以7～8范围内较合适。二、在既定的气液混合比下,需有一个极限的最小电解液流量,只有这样,气液混合比大小才能对提高加工精度和加工稳定性起决定性作用。电解液的最小流量可按下式计算:Q_液=m·q 液·F_(最大)式中,q 液——称为“液密”。即锻模进入全面加工时,单位面积上分摊到的电     

浅析推式离心机在化工企业的应用

推式离心机是一种连续操作的过滤式离心机,用以对中粗颗粒和可流动成粘稠的固/液悬浮液进行脱水机洗涤。其特色是连续操作,可与各种洗涤要求变速和推料频率相适应。推式离心机在化工装置上应用尤为广泛,通常为装置的核心设备,其运行的平稳率直接影响所在装置的长期运行及效益指标。     

改革设备检修制度取得良好经济效益

近几年,齐鲁石化公司积极适应社会主义市场经济规律,不断深化设备管理改革,坚持“安全、可靠、文明、高效”的设备管理八字方针,改革传统的设备检修制度,主要生产装置由“一年一修”延长到“两年一修”,有的生产装置达三年一修,化工生产装置全面实现周期长,安全稳定,满负荷运行,已经达到或接近国际先进水平.在延长主要生产装置运行周期的同时,广泛推广和应用以“点检制”为核心内容的现代管理方法,一方面严格控制了检修费用,使其保持在一个合理的水平上;另一方面有效地防止了设备失修和过剩维修,使设备新度系数和装备技术素质逐年提高,产生巨大的经济效益,1998年全公司改革主要生产装置检修制度挖潜增效达3.5亿元.齐鲁石化公司的主要经验是,全面推行和采用以“设备点检制”为核心内容的现代管理方法,强化对主要生产装置的日常维护和管理.     

吸附式空气干燥装置高效节能流程

根据吸附作用的机理，改变空气干燥装置传统的下进上出干燥、上进下出再生的流程，采用上进下出干燥、下进上出再生的流程，达到空气干燥装置高效节能的目的。     

长窄型薄壁叶片的套料电解加工

为实现长窄型薄壁叶片的套料电解加工,设计了电解液沿叶片轮廓四周进液的流动方式,开展了导流式出液和开放式出液的仿真对比分析,结果表明,导流式出液可以明显改善加工区域内流场的均匀性。开展了薄壁叶片套料电解加工试验研究,在进给速度1.4 mm/min下实现了薄壁叶片的套型加工,轮毂表面粗糙度从0.532 μm 降低至0.307 μm,叶片型面粗糙度从0.816 μm 降低至0.583 μm。     

走进石化企业——浅谈石化设备管理

在石化工业应用的大机组主要是指往复和转动（含离心、轴流等）压缩机、风机和蒸汽透平机组等。由于它们主要为石化物流在装置中提供流动能源和建立高压、冷凝等，故我们常把它们比作“心脏设备”。大机组一般是单套设备，一旦产生故障停车就会导致生产装置全线停工，造成的不安全后果十分严重。另一方面，它们也是高能耗和泄漏的高发设备。所以石化生产的成本和环境影响也是十分重要的。     

铁路整车称重台及校验/检定装置

本文着重介绍了铁路装备制造行业普遍使用的整车称重台设备和其校验/检定装置。文中提出并实际生产应用的一种新型比对式检验装置,与传统校验方式相比从设备组成、实际应用各方面均有了较好的进步和完善。新型检验/检定装置具有性能优良、工作效率高、现场操作简化方便、结构简单等优势。     

软包锂电池自动真空注液系统研究

针对现有的软包锂电池注液系统存在的生产效率低、电解液吸收率不高、注液精度低等缺陷,同时保证注液环境的干燥度,研究采用全新的真空注液原理、先进机械结构设计以及智能化的软件系统,整合优化出最优的注液系统动作流程,实现自动注液工艺,提高了生产率、注液精度及电解液的吸收等,进一步促进了电池质量的提升。     

物与信息混合驱动的带返修生产系统性能分析

聚焦物与信息两流混合驱动的含返修闭环异步串联生产系统,在综合考虑加工设备和信息控制设备随机故障的基础上研究了生产和信息控制参数对复杂生产系统稳态性能的影响。基于工件加工与信息的交互作用关系,采用重叠分解法将该系统拆分成多个混合驱动的装配和拆卸子系统。建立了前向和反向递归迭代算法来估计系统稳态生产率。数值实验与工业缝纫机数字化生产线案例验证了迭代算法在识别系统瓶颈和估算系统稳态性能等方面的有效性。     

圆形出液口悬浮阴极平面电化学加工间隙建模及实验研究

提出利用极间电解液液膜支撑阴极悬浮形成加工间隙,通过调节流量和电流实现极间间隙的调节和控制的新方法。以圆形出液口悬浮阴极平面电化学加工为例,基于流体力学和电极过程动力学理论建立加工间隙的数学模型,得到间隙与流量、压差及电流之间的关系。利用Fluent软件对间隙模型流场特性进行分析,得到间隙中电解液的压力场和速度场的分布情况,进而得到进出口压差和出口流速;实验获得不同流量、电流条件下的加工间隙。理论模型计算结果和实验数据结果相近,变化规律基本一致。     

机电一体化人才快速培养教学设备设计

开发了机电一体化教学培训设备,主要用于机电一体化相关控制系统的培训,它涵盖了当今工业中常用的一些控制元件,可以实现比较基础的控制功能,主要用于基础教学与培训。相对于传统的教学设备,机电一体化教学培训设备体积小,但是设备齐全,内部包括工业生产线中常用的机械结构如气缸、步进电机、直流电机等元件。在培训过程中能直观地看到整个控制过程的动作,学员能更容易理解机电一体化的控制过程。     

An automated flow line control system design

An automated flow line (AFL) applies equipment for production where parts follow the same path to have their operations in sequence. Unlike other flexible manufacturing systems, the flow line often operates in a synchronous mode. Thereby, by considering the design of a flow line control system, attention can be given to the control protocol that can address the interactions between equipment. Historically, the control protocol has been developed in a relatively complex form. In this paper, we propose a systematic approach for designing an AFL control system from a simple protocol. Pertaining to the part transfer this protocol includes four patterns, whose combinations are capable of demonstrating the line's control down to the equipment level. Since the entire line may not be short and its processes may not be similar, there could exist several control sections corresponding to different portions of the line. A modified hierarchical control architecture is selected. This proposed control system development approach has been applied to a color monitor tube (CMT) factory. A small real case illustrates the details. Furthermore, since equipment is not always in a normal condition, exception-handling with respect to the control protocol is also briefly discussed.     

创业型大学的兴起与内涵——大学组织技术变迁的视角

大学的组织技术经历了知识的传播、创造和应用阶段。20世纪后半叶,出现了一种新的知识生产方式——知识的传播、创造和应用活动不再是单独地进行,而是被紧密地整合在一起,大学在应用中生产知识。创业型大学正是在校级层面主观地推动和组织了这种新的知识生产方式,并使其成为大学知识生产的最主要模式,这是创业型大学在组织技术上对传统大学的超越。为了配合这种新的知识生产模式。创业型大学进行了一系列变革,脱离传统大学的发展模式。以新兴大学为主体、以社会需求为出发点、单一的学校文化和自上而下的公司化经营战略是创业型大学的主要特征。相形之下,诸如MIT、斯坦福等美国研究型大学不能被认为是创业型大学,而是具有学术创业精神的大学。     

A review on the analysis and experiment of fluid flow and mixing in micro-channels

The studies with respect to micro-channels and micro-mixers are expanding in many dimensions. Most significant area of micro-mixer study is the flow analysis in various micro-channel configurations. The flow phenomena in microchannel devices are quite different from that of the macro-scale devices. An attempt is made here to review the important recent literature available in the area of micro-channel flow analysis and mixing. The topics covered include the physics of flow in micro-channels and integrated simulation of the micro-channel flow. Also, the flow control models and electro-kinetically driven micro-channel flows are dealt in detail. A survey of important numerical methods, which are currently popular for micro-channel flow analysis, is carried out. Different options for mixing in microchannels are provided, in sufficient detail.     

一种新型灌装用控制阀的设计与应用

一种饮料灌装用新型控制阀,当瓶口顶开嵌有橡皮垫的滑套后,灌装头与滑套之间出现间隙,饮料通过间隙注入瓶内,同时瓶内空气经排气管排至贮液箱。与传统灌装阀相比,新型控制阀的结构特点是：排气管可上下移动、滑套下滑时有护罩限位防护、护罩使弹簧等零件变为内藏,克服了传统阀使用过程中瓶破阀坏及弹簧等零件外露不卫生等问题。     

A Part Scheme in Single-Stage Multimachine Systems

In current manufacturing environments, manufacturing orders are often characterised by unstable market demand, short product life cycles, carieties of products, and shory production lead times. In order to fulfil such manufacturing orders, a recent trend in flexible manufacturing systems (FMS) is to use versatile machines with fast tool delivery devices. In contrast to a conventional FMS that mainly focuses on part flows, tool flow control is important in single-stage multimachine systems (SSMS), which consist of versatile machines and fast tool delivery devices. This study proposes a part release scheme for SSMS, which considers the projected tool competition at the part release stage. This scheme can be applied to a real environment to improve system performance. The effectiveness of the scheme is demonstrated through a series of simulation experiments. Interpretations of the results are also presented.     

HIPPS在南海平台中的应用

HIPPS(高完整性压力保护系统)是一种安全仪表系统,近年来在海洋石油平台上使用越来越多,起到压力保护的重要作用。本文中主要围绕HIPPS的组成、功能以及在南海平台中的应用,进行了较为深入的探讨。HIPPS在设计上取代了传统的泄放设备,既节省了设备费用和占地面积,又保证了可靠的关断,其优势显而易见。     

Rotating microchannel flow velocity measurements using the stationary micro-PIV technique with application to lab-on-a-CD devices

The measurement of microfluidic flows is an essential instrument to understand the governing physical mechanisms at small scales. This fact has motivated the adaptation of well-established “macroscale” experimental technics to deal with the specificities of microfluidic flows; a prominent example is the micro particle image velocimetry (micro-PIV) technique. In a different manner, the progress experienced by experimental techniques to measure flows in rotating frames has been more limited, with most studies concerned with macroscale turbomachinery applications. It turns out that the scale reduction in this field establishes a new and important flow class, known as centrigually-driven microfluidics, with application to lab-on-a-CD devices. However, the experimental characterization of rotating microflows has been, so far, limited to bulk flow measurements and/or visualization practices. For that reason, in this work, we propose extending the stationary micro-PIV technique to undertake quantitative, whole-field, velocity measurements inside rotating microchannel flow platforms. For this task, actual lab-on-a-CD prototypes are used. This work develops in two parts. First, we describe the most relevant changes in the micro-PIV equipment viewing the introduction of the test section rotation, namely: (i) hardware changes related to the micro-PIV/CD synchronization and (ii) software changes aiming at the preservation of the velocity measurement accuracy, through the removal of the circumferential velocity component. While this last step follows a well-known methodology, called image de-rotation, we propose tackling it in a new and automated fashion by means of the image registration method, whose implementation and advantages are explained in detail here. The second part of this work evaluates the capabilities of the modified micro-PIV technique by critically assessing the results of preliminary tests undertaken in dynamical regimes where rotation is dominant. Here, we present for the first time velocity profile measurements of centrifugally-driven microchannel flows, which display marked structural differences from classical stationary pressure-driven flows. The quality of these experimental profiles is further examined through comparisons with computational fluid dynamics simulations, based on the lattice Boltzmann method. Overall, this study indicates the effectiveness of the proposed micro-PIV system, which is able to accurately capture the most relevant physical features of rotating microfluidic flows over regions sufficiently far away from the walls. On the other hand, inside the boundary layers, the present micro-PIV measurements remain difficult to execute; the reasons for this limitation are discussed and clearly identified in the present preliminary studies, which pave the way for future studies in the field.