输煤专业基础知识_火电厂输煤程控系统的设计与实现

  本文关键词：输煤程控系统的设计，由笔耕文化传播整理发布。

火电厂输煤程控系统的设计与实现

火电厂输煤程控系统的设计与实现

当前,在我国经济迅速发展的大好形势下,我国电力事业也随之进入快速发展时期,火电厂的生产过规模不断增大,运行参数也越来越复杂,对主辅机及其它相应的热力设备和系统的要求也越来越高。火电厂的输煤系统是电厂辅助系统的重要组成部分,它和其它相应的机电设备承担火电厂电力生产燃料供应任务。在火电厂的运行过程中,输料系统工作效率的提高是整个火电厂工作效率提高的关键因素,整个输料过程的远程监控也对自动制约系统的设计提出了更高的要求,传统策略已经与这方面的要求相去甚远,因此在输煤系统中我们选用了当今应用最广泛的PLC(可编程序制约器)制约系统,使这种理想迅速地成为现实。本文首先阐述了课题来源和意 义,针对某企业自备电厂输煤制约系统近况浅析浅析,概述了电厂输煤系统的具体情况以及现有制约系统的构成及特点,浅析浅析系统存在的不足,论述改造的必要性。接着详细的浅析浅析了PLC在国内外的研究近况,以及它在输煤系统制约方面的优势,提出了基于PLC的火电厂输煤程控系统改善方案；针对电厂的实际情况及工艺流程的要求,从系统结构、系统设计原则、组态方式及主要系统构成等方面进行了综合的阐述,确定了合适的输煤程控系统方案。根据火电厂的实际情况对系统的所需要的硬件、软件及通讯方式进行了优化选择；最后对系统的制约方式、PLC制约、上位机与PLC通讯及上位机监控系统方面进行了重点研究,实现了对整个输煤程控系统方案的集成,同时对它的功能也进行了详细的设计,从而使整个制约过程具有正常运行及事故处理,各种参数的监测、报警信号的发出、装置的调节、制约及设备危险时的保护功能,适合火电厂实际情况,达到了预期改造目的。

【Abstract】 At present, as China’s rapid economic development of the excellent situation, China’s power industry has entered a period of rapid development.The scale of the production of thermal power plants is increasing, and operating parameters are also more complex. The main auxiliary and other appropriate thermal equipment and system requirements are increasingly high. Thermal power plant coal handling system is an important part of a power-assisted system. It with other related mechanical and electrical equipment bears the thermal power plant fuel supply electricity mandate. When the thermal power plant is running, the improving of the input feeding system is the key factor to improve the efficiency of thermal power plants.The remote temporary control of the whole process of conveying has also put forward higher requirements to the automatic control system design. Traditional approach has a far cry from this requirement. So we selected today’s most widely used PLC (programmable logic controller) control system in the control system to make this an ideal quickly become a reality.This paper first describes the sources and significance and analysis the status quo subject for a company-owned power plant coal handling control system.It overviews the specific circumstances of power plant coal handling system and the existing control system of the composition and characteristics.It analysis the exiting problems and discuss the need for transformation. Following it analysis a detailed of the PLC Research at home and abroad, as well as its coal handling system control advantages.Then it proposed improvement program over PLC-based thermal power plant coal handling program.for the power plant and process requirements of the actual situation in,from the system architecture, system design principles, configuration methods and other aspects of the main system constitutes a comprehensive exposition of Coal Handling.Then determine the appropriate program control system solutions.According to the actual situation of thermal power plant, it optimized choice necessaryly hardware, software and communications.Finally, it carried out key research to the system control mode, PLC control, communication between PC and PLC and the host computer monitoring system. Then realized implementation of the entire coal handling the integration of programmable system solutions. It carried out a detailed design to its functions so that the whole control process with the normal operation and incident handling, monitoring of various parameters, alarm signal is issued, the device regulation, control and protection equipment, risk function, the actual situation for thermal power plants to achieve the desired transformation of the purpose.

更多论文推荐: 各专业论文 海量论文下载

  本文关键词：输煤程控系统的设计，由笔耕文化传播整理发布。