【作者】 王渝；

【导师】 邵俊鹏；

【作者基本信息】 哈尔滨理工大学 ， 机械电子工程， 2006， 硕士

【摘要】 随着工业技术的飞速发展,工业汽轮机被广泛应用于石化、电力、冶金、建材、环保和能源等工业领域。由于工业汽轮机具有高温、高压、高转速的特点,因此其承担着转速和负荷调节及工况控制任务的控制系统直接影响着机组运行的安全性、可靠性、经济性以及自动化程度。目前,工业汽轮机多采用机械液压控制系统,存在着调节精度和自动化程度低、难于实现与集散控制系统(DCS)的通信、工作特性固定、调节功能少等缺点;而进口电液控制系统存在着成本过高、不便于维护、通用性差等缺点。因此,有必要研制开发出适用于工业汽轮机的性能优良、可靠性高、通用性好、性价比高的电液伺服控制系统。本文从工业汽轮机安全运行的实际需要出发,以基于S7-300 PLC的工业汽轮机电液伺服控制系统的研制过程为主线,重点讨论了工业汽轮机控制系统电液伺服部分和控制器S7-300 PLC部分的开发。文中综述了目前国内外工业汽轮机控制系统的发展现状。在确立了基于S7-300 PLC的工业汽轮机电液伺服控制系统方案的基础上,对工业汽轮机控制系统进行了总体方案设计,然后对工业汽轮机电液伺服系统进行了设计,建立了电液伺服系统的数学模型,并用MATLAB进行了仿真分析。控制器采用SIEMENS公司的S7-300 PLC,介绍了S7-300 PLC的工作原理、系统结构及硬件组成,对S7-300 PLC进行了硬件、软件和通信部分的组态。人机界面采用SIEMENS公司的工业组态软件WinCC和触摸屏TP170B,对上位计算机和触摸屏进行了组态,开发出了友好的人机界面。结果表明,基于PLC的工业汽轮机电液伺服控制系统能有效地对工业汽轮机起到调节和保护作用。电液伺服系统的使用提高了工业汽轮机的控制精度和响应速度。上位计算机和触摸屏的应用提高了系统的自动化水平,方便了操作员对现场仪表监控状况的了解和管理,实现了监控数据的远程传输,有利于实现全厂一体化(TPS)。本控制系统安装维护方便,系统工作稳定、运行可靠、调节和测量精度高,监控软件功能完善,人机界面友好。更多还原

【Abstract】 With the rapid development of industry technology, the industrial steam turbine is widely applied to the field of industry, such as petrifaction, electric power, metallurgy, architectural material, environment protection, energy sources, etc. Since the characteristic of industrial steam turbine is of high temperature, high pressure and high rotate speed, the control system which takes on the task of controlling rotate speed, load and run status directly affects security, reliability, economy and automation degree of running unit. Nowadays, the industrial steam turbine almost adopts to mechanism-hydraulic control system. It has some disadvantages, such as low governing precision and automatization degree, difficult realization of communication with Distributed Control System (DCS), fixed work characteristic, small governing function, etc. However, the import electro hydraulic control system has some disadvantages of high cost, inconvenient maintenance, bad currency, etc. So it is indispensable to develop the electro hydraulic control system with excellent performance, high reliability, good currency and high performance-price ratio for industrial steam turbine.For the running safety of industrial steam turbine, the article discusses the design of electro hydraulic servo system and S7-300 PLC controller according to development process of industrial steam turbine electro hydraulic servo control system based on S7-300 PLC. The thesis outlines the development of domestic and aboard industrial steam turbine control system. The thesis establishes the scheme of the control system as a whole, and designs the part of electro hydraulic servo, and establishes the mathematical model of the system. Then, the system of dynamic simulation is performed by means of Matlab. The controller is SIEMENS S7-300 PLC. The thesis introduces its principle, structure and hardware, and configurates hardware, software and communication. Human-computer interface is WinCC and TP170B. The configuration of upper computer and touch panel was performed. The friendly interface has been developed.The results show that the system effectively adjusts and protects the industrial steam turbine. The use of electro hydraulic servo system improves control precision and response speed of the industrial steam turbine. The application of upper computer and touch panel improves automatization degree, which is convenient for monitoring and management of operator, and realizes remote transmission of monitoring data, and is in favor of realizing Total Plant Solution (TPS). It is facility to mount and maintain, reliable to operate, and precise to adjust and detect. The monitoring software has abundant functions and kind interface.更多还原