混合机型空压机自动监控系统的研究与实现

发布时间：2018-04-23 00:21

本文选题：空气压缩机 + 可编程逻辑控制器　；参考：《山东科技大学》2011年硕士论文

【摘要】：空气压缩机为气动机具提供空气动力,它应用非常广泛。近年来由于企业生产规模的扩大和设备的更新换代,造成同一空压机站中不同类型空压机并存的现象相当普遍。目前,对混合机型空压机站的控制与管理仍停留在人工手动控制阶段。若能实现对混合机型空压机进行自动监控,可大大提高设备的自动化、信息化管理水平,降低劳动强度。论文以螺杆式和活塞式两大主流机型组成的空压机站及其冷却水系统为例,设计了混合机型空压机自动监控系统。该系统主要由螺杆式空气压缩机、活塞式空气压缩机、可编程控制器、高压软起动器、低压变频器、传感器、工业总线等先进设备组成。论文在恒压供气和开机率相同的基础上,采用以螺杆式空压机组为主,活塞式空压机组为辅的柔性供风方案。其中螺杆机组采用“高压软起一拖二”控制方案,活塞机组采用“变频器一拖三”控制方案,同时实现冷却水系统“自动循环上水”。论文依据系统的控制方案进行了硬件设计、软件设计、监控界面设计等,实现了对螺杆式和活塞式两种混合机型空压机组及其冷却水系统的集散控制。尤其软件程序中,以恒压供气为主线,采用模块式设计方法,基本实现了一键运行、自动启停的效果。论文从空压机运行原理,控制方案设计、控制柜配置、工业现场总线调试、控制系统程序编写、触摸屏界面设计等方面,详细阐述了整个系统的开发设计过程。对于开发过程中遇到的较难理解的工程问题,文章都做了较详细的讨论。该监控系统在现场已运行数个月,在安全稳定、自动化程度、人性化设计等方面取得了较好的效果。实际结果表明,本系统具有很强的实用性和推广价值。
[Abstract]:Air compressors provide aerodynamic power for pneumatic machines, and they are widely used. In recent years, due to the expansion of enterprise production scale and the replacement of equipment, it is quite common for different types of air compressors to coexist in the same air compressor station. At present, the control and management of hybrid air compressor station is still in manual control stage. If the automatic monitoring of hybrid air compressor can be realized, the automation and information management level of the equipment can be greatly improved, and the labor intensity can be reduced. Taking the air compressor station and cooling water system composed of screw type and piston type as examples, the automatic monitoring system of hybrid type air compressor is designed in this paper. The system is mainly composed of screw air compressor, piston air compressor, programmable controller, high voltage soft starter, low voltage inverter, sensor, industrial bus and other advanced equipment. On the basis of the constant pressure air supply and the same operating rate, the flexible air supply scheme with screw air compressor group as the main unit and piston air compressor unit as the auxiliary is adopted in this paper. The screw unit adopts the control scheme of "high pressure soft lifting one tow two", and the piston unit adopts the "frequency converter, one tow three" control scheme, and realizes the cooling water system "automatic circulation water" at the same time. According to the control scheme of the system, the hardware design, software design, monitoring interface design and so on are carried out to realize the distributed control of the screw type and piston type air compressor unit and its cooling water system. Especially in the software program, taking constant pressure gas supply as the main line and adopting the modular design method, the effect of running with one button and automatically starting and stopping is basically realized. The development and design process of the whole system is described in detail from the aspects of operation principle, control scheme design, control cabinet configuration, industrial field bus debugging, control system programming, touch screen interface design and so on. This paper discusses in detail the engineering problems which are difficult to understand in the course of development. The monitoring system has been running for several months and has achieved good results in safety and stability, automation, humanized design and so on. The practical results show that the system has strong practicability and popularization value.
【学位授予单位】：山东科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH45;TP277

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