毕业设计（论文）-火电厂输煤PLC控制系统的设计.pdf

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I
PLC
) ( 输煤控制系统;系统建模;可编程序控制器关键词
不仅便于实现多种运行方式,而且大大提高了程序的可维护性和可靠性。
PLC
本文以面向对象的思想,采用结构化设计,在
中应用子程序的方式,
并对其配置及组成部件作了系统的论述。, 构和功能
控制在火力发电厂输煤系统中的应用以及控制方式
阐述了整个控制系统的结,
PLC
段的输煤系统,从结构上保证了输煤系统的运行可靠性。本文介绍了
程序
本文在充分考虑输煤系统的作用和运行可靠性基础上,设计了一条一路多
大提高,传统的输煤系统己无法满足发电厂的需要。
烦,大大降低了发电厂的生产效率。随着发电厂规模的扩大,对煤量的需求大
且由于输煤系统范围大,经常有皮带跑偏、皮带撕裂及落煤管堵塞
等等麻…
系统。由于输煤系统现场环境十分恶劣,不仅极大损害了工人的身体健康,而
传统的发电厂输煤系统是一种基于继电接触器和人工手动方式的半自动化
到最大限度节能的目的。
分,燃煤的合理输送保证了火电厂发电过程中能进行充分的能量转换,从而达
全经济效益的重要保证。其中,输煤系统是火电厂自动化中不容或缺的重要部
火电厂自动化是火电厂非常重要的组成部份,是大型火电机组取得良好安
要
要摘
摘
要
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控制系统的设计
控制系统的设计 PLC
PLC 火电厂输煤
火电厂输煤
控制系统的设计
PLC
火电厂输煤
控制系统的设计
PLC
火电厂输煤
哈尔滨理工大学学士学位论文
PLC in thermal power plant control system
design
Abstract
The automation is not only an important part in thermal plant, but also a
necessary guarantee for its economics effectiveness, and that coal transfer control
system is also very significant for the automation of thermal plant. For a maximum
economizing on energy, a reasonable method in coal transfer can ensure plete
energy conversion during process of generating electricity.
The traditional coal transfer system of power plant is a half-automation system
based on relay connect and manual work. As the environment of the coal transfer
system is so execrable, it not only does harms to the worker's health, but also has
problems like belt slide, belt avulsion, and jam of the coal-falling pipe and so on for
its large scope. This sharply decreases the productive efficiency of the power plant.
Along with the development in scale, the coal requirement of power plants increases
greatly and the trader ional coal transfer system can't meet the needs of these power
plants any more.
This paper proposed a coal transfer system after careful consideration on the
function and run reliability. It involves one subway, which consist of multiple
segments .This can ensure the system's reliability or configuration. The paper