MA209B-240卷染机设计含4张CAD图
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外文资料2012 International Conference on Applied Physics and Industrial EngineeringThe Design of Auto-control System on Overflow Dyeing MachineShuiying XIEZhejiang Industry Polytechnic CollegeShaoxing, 312000, ChinaAbstractThe composition and working principle of DCS system are introduced, as well as its configuration, function and basic language. An account of the design of auto-control system on dyeing machine is narrated, and the advancement of the system and the importance of cascade control are further put forward. Its control rate can achieve above 95%, which can reduce labor intensity and improve working environment. 2011 Published by Elsevier B.V. Selection and/or peer-review under responsibility of ICAPIE Organization Committee. 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of name organizerOpen access under CC BY-NC-ND license.Keywords:DCS (distributed control system), dyeing machine,cascade control1. IntroductionNowadays, the equipment in dyeing industry is not backward, but low operation and management result in dependence on experience and proficiency of the operator, overstaff, low efficiency and instable quality. If auto-control system can be improved with the equipment unchanged, the influence of labor can be eliminated, as well as efficiency and quality improvement.In dyeing industry, the worst damage is environment pollution and energy waste, extremely waste water discharge, heat and electricity waste. Some industries start to set up own sewage treatment and energy recovery plants. If energy-saving and ejection-decreasing can be concerned in production at first, it is a fundamental method.Dyeing equipment, working in moist and corrosive environment, are needed strong anti-jamming capability and friendly human-computer interface. Common relay and single-chip controlo DCS is used as the core of the control system, touch screen as human-computer interface.The main objective of this study aims to investigate the effectsnd key parameters of DBD plasma discharge on polyamide 6,6dye adsorption process promoted by DBD plasma. Previous investigations on the dyeing of polyamide fibers have studied various properties such as, adsorption, kinetics, diffusion, attachment and equilibrium 27. However, an investigation proposing a dyeingmechanism, which can explain the physico-chemical improvements occasioned by DBD plasma discharge in the dyeing process,was never performed. Scanning electron microscope (SEM), staticand dynamic contact angle measurements, X-ray photoelectron spectroscopy (XPS), Fouriertransform infrared spectroscopy (FTIR), Fluorescence microscopy, UVvis spectroscopy, surface energy,conductivity and pH of aqueous extraction have been used to studythe changes of surface morphology, wettability and chemical com-position of the plasma-treated polyamide fabrics.2. Analysis on deying controlWith the demand on omnibearing control, original control points are all considered in improved system. With the demand on control flow and productive technology, control methods are showed as follow:1) Differential pressure measurement on bath ratio controlWith quick operation by PLC, cloth weight and bath ratio are treated into water level, which realized control on bath ratio.2) Heating/cooling controlAs one exchanger is shared in mechanical structure, heating/cooling rate is adjusted by the same control object in PLC. While heating, proportional valve is PID adjusted and its opening is controlled in an exact and appropriate degree, which control temperature precision and reduce its influence on dyeing. Same method is used in cooling. In temperature control settlement, heating and cooling rate and soaking time can be settled free, as well as the open and close of reducing valve and drain valve, which reduce the influence by manual operation.3) Frequency conversion controlAccording to auto-adjustment on rotation of main pump by cylinder, frequency converter control in high temperature and high pressure dyeing machine is used to realize uniform movement of piece goods in the whole dyeing process. F/V transition is used to realize speed change of main pump as the change of temperature and pressure, which make smooth movement. It is showed in Fig.1.Fig.1 Frequency conversion control diagramMany kinds of washings are provided in the process. Water supply and drainage pipeline can be chosen on demand, such as hot/cold water, and clear water/sewage discharge, to realize different washing effect. Effective management on sewage discharge can deplete discharge and provide precondition for clear water recycle.3. Control RealizationDistributed Control System is a new computer control system, which is developed on the base of centralized control system. There is small difference on system function between them, but it is totally different in function realization.Dyeing technology is a complicated process of chemical reaction. However, the temperature is the main factor to the dyeing effect. The temperature experiences a heating, keeping and cooling process during the process of dyeing.DCS is composed of engineer station (ES), operation station(OS), control station(CS) and communication network SC-net II. DCS can be connected with PLC by communication interface unit(CIU) coupling on communication network. Information exchange of business management can be realized by multifunction station(MFS) and AdvanTrol-PIMS software, on Real-Time Data Acquisition, Real-Time process check up, Real-Time trend browse, alarm record check up, switching value deflection record check up, report storage, history trend storage and check up, generation and output of productive process report and so on. It is showed in Fig.3.Cascade control system adopts two set of detection transmitter and two regulators. The first one is set for the next one, and the output of the next one is sent to regulator valve. The first one is named main regulator, and what it is detected and controlled is named main variable, that is process control indicator; the next one is called secondary regulator, and what it is detected and controlled is named secondary variable(secondary controlled parameters), used to stabilize main variable. The whole system is composed of two control loop, main loop and minor loop. Minor loop is composed of detection and transmission of secondary variable, secondary regulator, regulating valve and secondary process; main loop is composed of detection and transmission of main variable, main regulator, secondary regulator, regulating valve, secondary process and main process. It is showed in Fig.4.1) Water level measurement by differential pressure technology is used to constitute precision arithmetic in bath ratio control, which is used to realize precision control on water supply on demand.Formerly, bath ratio is realized by visual inspection and manual control on water supply valve. There is big measurement error and bad repeatability, which is one of important reasons for dyeing chromatic aberration. Float level meter is used to indicate water level by slice turnover in the display, there is big measurement error and it is can not be connected with computer. In the design, differential pressure measurement of water level is used to substitute former magic turnover pluviograph, which realize the connection with computer. By water level measurement by computer, water supply valve is controlled and bath ratio can be controlled exactly.In water level measurement, measurement fluctuation and bath ratio conversion is mainly settled. Digital Filtering Technique is used as Fig.5, to settle level fluctuation by water supply.Fig.5 digital filtering block diagram2) Automatic regulation of pump rotation according to cylinder temperature, frequency converter of high temperature and high stress is used to realize uniform movement of piece goods in the whole process. Nowadays, in many domestic industries, original pump is equipped frequency converter, but it is only used for start/stop of the pump. The improvement can automatically regulate the speed of the converter in dyeing process. F/v transformation is adopted in the system to realize variable speed of the pumpaccording to temperature and pressure. Manual/automatic operation transformation is solved. During manual operation, pump speed can be adjusted by potentiometer, while automatic operation, output voltage of f/v converter through PLC are sent to input terminal of the converter, to realize automatic speed regulation of the main pump.These results indicate that more polar functional groups are incorporated to PA66 fibers surface 15,52. The peak assigned to the carbon atoms neighboring the amide nitrogen at 286 eV does not show significant deviation owing to the fact that the pri-mary amino groups C NH2 peak eventually generated by the chain scissions at the C N bond (as suggested previously in the FTIR analysis) have the same energy binding range of the C NH. On the other hand, the slight growth (from 15.2 to 15.7%) present in this peak could indicate that not all the carbons in the nylon sur-face can be converted into doubly bonded to oxygen by dielectric barrier discharge (DBD) processing in air 29. The peak associ-ated to the aliphatic carbons shows a remarkable decrease (from 69.6 to 56.4%). These data, in addition to the FTIR analysis, suggest that direct aliphatic chain scission C C is not favored in the DBD processing of polymer surfaces 7,53 and that the preferred oxida-tion sites are the methylene carbons immediately adjacent to the amide carbonyls 40. Therefore, it is clear that the formation of low molecular weight molecules can occur, and through oxidation, this tends to form acidic and partially soluble species as previously confirmed by FTIR, conductivity and pH analysis of the aqueous extracts.Acid dyes are the most common in use for polyamide fibers. However, their use is restricted to those containing only one anionic group because of the lower concentration of cationic ammonium groups on the PA surface (10% that of wool). Moreover, acid dyes exhibit some drawbacks such as poor leveling and wet fastness properties and sometimes an excessively low dyebath pH. Direct dyes can be applied on nylon in a very similar manner to acid dyes, sharing some of their problems such as the sensitivity to nylon structural variations. However, direct dyes are economically more attractive to produce some full bright reds, scarlets, dark browns, greens and blacks. In this context, plasma pre-treatment allows the dyeing of nylon with direct dyes without auxiliaries and at lower temperature and dye concentration 15,56. The exhaustion test shows that dyeing kinetic is greatly influenced by plasma treat-ment. Dye uptake was monitored measuring both K/S values of the dyed fabrics and dyebath concentrations before and after plasma treatment. As observed in Fig. 4, K/S values obtained in plasma pre-treated sample are significantly higher when compared with the untreated ones. Furthermore, after 60 min, dyebath concentration is completely exhausted in the plasma treated sample; hence this never occurs in the untreated sample. An additional dyeing test in the plasma treated PA66 carried out at 80 C shows the same K/S values as the sample without treatment dyed at 98 C. These results4. ConclusionsAt present, the device had been put into practice and obtained good effect. The main work can be summarized as follows: 1. To control the dyeing system, the technical DCS has been used and a sketch has been built of engineering systems. 2. It is clear that DCS control module has superiority and better price and application prospect in similar engineering. The device had been produced and gotten a good performance.References1. Zhou jiasheng, SONG Shibing. EMC of DCS Automatic Control System with Inverter. Safety & EMC vol.01,pp.71-72,20062.GAO Su-pin. Design and realization of software architecture in DCS automatic control system. Computer Engineering and Design vol.07, pp.1192-1194, 2004.3.WANG Hai-yan; BAI Xu Spilled-dyeing machine network control system based on industrial Ethernet. Electronic Instrumentation Customer.vol.03, pp. 23-25, 2006.4.Wang Haiyan et al. Application of PROFIBUSDP Fieldbus in Batch Dyeing Machine Control System. Journal of Textile Research.vol.06, pp. 30-32, 2004. 中文译文2012国际会议北京应用物理与工业工程自动控制系统对溢流染色机的设计谢水英浙江工业职业技术学院绍兴,312000,中国摘要:介绍了DCS系统的组成和工作原理,以及它的配置、功能和基本语言。的染色机自动控制系统的设计是叙述,和系统的发展,进一步提出了串级控制的重要性。其控制率可以达到95%以上,可降低劳动强度,改善工作环境。2011由爱思唯尔出版帐面价值选择和/或同行评审的责任下ICAPIE组织委员会。2011爱思唯尔有限公司选择和/或发表的同行评审的责任下(名字组织者)开放存取在CC BY-NC-ND许可证。关键词:DCS(分布式控制系统)、染色机、串级控制。 1.简介如今,印染行业的设备并不落后,但是较低的经营和管理导致依赖经验和熟练的操作员,overstaff,效率低,质量不稳定。如果自动控制系统与设备不变,可以提高劳动力的影响可以被消除,以及效率和质量改进。在印染行业,最严重的危害是环境污染和能源浪费,废水排放,热能和电能浪费。一些行业开始建立自己的污水处理和能量回收工厂。如果有关节能和ejection-decreasing可以生产,这是一个基本方法。染色设备,工作在潮湿和腐蚀性环境中,需要强大的抗干扰能力和友好的人机界面。常见的继电器和单片机controlo DCS作为控制系统的核心,触摸屏作为人机界面。这项研究的主要目的旨在探讨通过DBD等离子体促进聚酰胺6,6dye吸附过程DBD等离子体放电的effectsnd关键参数。聚酰胺纤维的染色前调查研究了各种性能如,吸附,动力学,扩散,附着和平衡27。然而,调查提出一个dyeingmechanism,这可以解释通过在染色过程中DBD等离子体放电而引起的物理 - 化学的改进,是从来没有进行。扫描电子显微镜(SEM),staticand动态接触角测量,X射线光电子能谱(XPS),傅立叶变换红外光谱(FTIR),荧光显微镜,紫外可见光谱,表面能,导电性和水萃取pH值已被用于studythe表面形貌,润湿性和等离子体处理过的聚酰胺织物的化学COM-位置的变化。2.干燥控制分析需求的全方位控制,原始控制点都认为在改善系统。在控制流的需求和生产技术,控制方法是显示如下图:1)压差测量在浴比控制用快速操作由PLC、布重量和浴比对待水位,实现控制浴比。2)加热/冷却控制共享一个换热器的机械结构、加热/冷却速率调整同样在PLC控制对象。加热时,比例阀控制PID调整和开放在一个精确的和适当的度,温度控制精度和减少其对染色的影响。同样的方法用于冷却。在温度控制解决,加热和冷却速率和浸泡时间可以免费解决,以及减少阀和排水阀的打开和关闭,减少人工操作的影响。3)变频控制根据auto-adjustment旋转的主泵缸,变频器控制高温高压染色机是用来实现统一运动布匹在整个染色过程。F / V转换用于实现变速主泵的温度和压力的变化,使光滑的运动。这是显示在图1。在这个过程中提供多种洗涤剂。供水和排水管道可以根据需要选择,如热/冷水,和清晰的水/污水排放,实现不同的洗涤效果。有效管理污水排放可以耗尽放电和清水回收提供了先决条件3.控制实现分布式控制系统是一种新的计算机控制系统,该系统集中控制系统的基础上发展起来的。有关于在它们之间的系统功能的小的差别,但它是在功能上实现完全不同的。染色技术是化学反应的一个复杂的过程。然而,温度是染色效果的主要因素。温度经历一个加热,染色的过程中,这表明在图2中保持和冷却过程DCS是由工程师站(ES),操作站(OS),控制站(CS)和通讯网络SC-II净的。 DCS可与PLC通过通信网络上的通信接口单元(CIU)的耦合来连接。企业管理的信息交流可以通过多功能站(MFS)和AdvanTrol-PIMS软件来实现,达到实现实时数据采集,实时进程清理,实时趋势浏览,报警记录查询时,开关量偏差记录检查起来,报告存储,历史趋势,存储和检查,发电和生产过程的报告输出等。串级控制系统采用两套检测变送器和两个调节器。第一个被设置为下一个,和下一个的输出被发送到调节器阀。第一个被命名为主要调节,并检测它与控制命名主变,那就是过程控制指标;下一个被称为二次稳压器,其中以及哪些检测和控制被命名为二级变量(辅助控制参数)的,用于稳定的主要变量。整个系统由两个控制回路,主回路和次要循环。小回路是由检测和辅助变量,二次调节器,调节阀和二次加工的传播;主循环组成检测和主要变量,主调节器,次级调节器,调节阀,二次加工和主处理的传输。1)通过差压技术水平的测量被用来构成在浴比控制,它是用来实现上按需供水精度控制精度运算。以前,浴比是通过目测和供水阀手动控制来实现。有大的测量误差和重复性差,这是用于染色色差重要原因之一。浮球液位计是用于在显示切片成交,表明水位,存在很大的测量误差,它是无法与电脑进行连接。在设计中,水位差压测量被用来替代前魔周转pluviograph,其实现与计算机的连接。通过由计算机水位测量,供水阀被控制,并且可以准确地控制浴比。在水位测量,测量波动和浴比的转换主要是解决了,由供水来解决的水平波动。根据圆筒温度2)泵的旋转的自动调节,在高温和高应力的频率转换器是用来实现在整个过程中片产品的均匀的移动。如今,在国内许多产业,原水泵配频率转换器,但它仅用于泵的启动/停止。改进可以自动调节在染色过程中的转换器的速度。 F / V变换是在系统通过实现泵的可变速根据温度和压力。手动/自动操作变换就解决了。在手动操作时,泵的转速可以通过电位器进行调整,而自动操作,通过PLC的F / V转换器的输出电压被发送到转换器的输入端,实现了主泵的自动速度调节。这些结果表明,多种极性官能团被引入到PA66纤维表面15,52。分配给该碳原子相邻的在286 eV的酰胺氮的峰值不显示显著偏差由于该PRI-玛丽氨基C组NH 2峰最终通过在CN键的断链产生的事实(如在FTIR先前建议分析)拥有的C NH的相同能量约束范围内。另一方面,在轻微的生长(从15.2至15.7)存在于该峰可能表明,并非所有的尼龙河畔面上的碳可以在空气中转换成由电介质屏蔽放电双键氧(DBD)处理29。峰associ-ated以脂肪族碳呈现显着下降(从69.6到56.4)。这些数据中,除了在FTIR分析,表明,直接脂族断链CC被未在聚合物表面7.53的该DBD处理青睐并且优选oxida-化位点是亚甲基碳紧邻酰胺的羰基40。因此,很显然,可发生低分子量分子的形成,并通过氧化,这会形成如先前通过FTIR,电导率和含水提取物的pH值分析证实酸性和部分可溶的物种。酸性染料是最常见的使用了聚酰胺纤维。然而,它们的使用仅限于含有因为阳离子铵基团的PA表面上的低浓度(10羊毛的)的仅一个阴离子基团的那些。此外,酸性染料表现出一些缺点,如流平性差和湿牢度性能,有时过低染液的pH值。直接染料可以在尼龙以非常类似的方式酸性染料被应用,共享他们的一些问题,如对尼龙的结构变化的敏感性。然而,直接染料在经济上更有吸引力产生一些充满明亮的红色,猩红色,暗棕色,绿色和黑色。在这种情况下,等离子体预处理允许与直接染料尼龙的染色无助剂和在较低温度下和染料浓度15,56。用尽测试表明染色动力学是由等离子体处理-彪极大影响。染料吸收监测测量染色织物和染液浓度前和等离子体处理后的两K / S值。如图观察。当与未经处理的那些相比4,等离子体预处理样品中得到的K / S值是显著更高。此外,60分钟后,染液浓度血浆处理的样品在完全耗尽;因此这不会发生未处理样本。等离子体中的一个额外的染色试验处理PA66在80进行显示相同的K / S值作为样品未经处理的98C.这些结果染4.结论目前,该设备已被付诸实践,取得了良好的效果。主要的工作可概括如下:1.为了控制染色系统中,技术的DCS已使用的和草图已建工程系统。 2.很明显,DCS控制模块具有类似工程的优势和更好的价格和应用前景。该装置已经生产,并得到了良好的业绩。参考1周佳升,宋施秉。 DCS自动控制系统的电磁兼容与逆变器。安全与电磁兼容vol.01,pp.71-72,2006年2高素针。设计和软件体系结构的DCS自动控制系统的实现。计算机工程与设计vol.07,pp.1192-1194,2004年。3王海燕;基于工业以太网的BAI徐溢出染色机网络控制系统。电子仪表Customer.vol.03,第23-25,2006年。4王海燕等人。 PROFIBUSDP现场总线技术在批量染色机控制系统中的应用。杂志纺织Research.vol.06的,第30-32页,2004年。
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