单元机组磨煤机的顺控逻辑分析

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单元机组磨煤机的顺控逻辑分析

摘要
 为实现节能降耗，减少磨煤机启停用油是关键。通过顺序控制系统对锅炉、汽轮机、发电机进行有效启动和停止。磨煤机的启停采用顺序控制，并重点阐述了磨煤机顺序启停控制逻辑，为机组的协调控制提供可靠保证。对磨煤机的启动和跳闸进行了逻辑分析，使得运行人员在操作过程中能够合理地去控制。还通过对磨煤机顺序控制逻辑进行优化，在磨煤机的暖磨过程中、磨煤机顺序控制启动过程中、磨煤机顺序启动后以及磨煤机相关的给煤机顺序控制逻辑进行优化，使得系统更便于操作。避免了运行人员对磨出、入口温度不好控制的弊端，很好地降低磨煤机启停燃油、缩短启动时间；完善和优化了磨煤机系统的各个环节的控制和调节，从而大大加快了磨煤机的启动时间，年节约燃油有所改善；能使运行人员只须通过一个或几个操作按钮就可以完成某一套设备，甚至整个机组的启停任务。最后总结了磨煤机调试过程中存在的问题及解决措施。
 
关键词：磨煤机；顺序控制；优化控制

Sequence control logic analysis Of Mill unit

Abstract
 In order to realize energy conservation in thermal power plant，it is the key to reduce fuel oil of coal pulverizer during the start-up and shut-down. Through the sequence control system to the boiler, turbine, generator effective start and stop. The sequence control of start-stop to the mill，And focused on The sequence control logic of start-stop to the mill for the coordination and control unit to provide a reliable guarantee.Mill on the start-up and tripping a logic analyzer, makes operating officer in the course of the operation to reasonably control. Through the mill order to optimize control logic, in the warm mill grinding process, the mill started the process of sequence control, Mills and Mills after the commencement of the order related to the coal sequence control logic Optimized system makes it easier to operate. To avoid the operation staff of the mill export and import control of the shortcomings of bad temperature, reduce the mill very good start and stop fuel, shorten the start-up time;Improve and optimize the mill system in all aspects of the control and regulation, thus greatly accelerating the mill's start-up time, an improvement in fuel savings; Officers can only run through one or a few buttons on the operation of a complete set of equipment and even entire units start and stop tasks. It is generalized the problems of mill in commissioning process and its settlement．

Keywords: coal mill；sequence control；optimized control

目录

摘要 I
Abstract II
1 绪论 1
1.1磨煤机控制的意义 1
1.2磨煤机的控制方法 1
2 磨煤机的结构及原理 3
2.1磨煤机的功能组 3
2.2双进双出磨煤机的工作原理 3
2.3磨煤机的主要特点 3
2.4 磨煤机的运行方式 4
3 磨煤机的启停控制 5
3.1顺序控制的原理 5
3.2磨煤机的启动 6
3.3磨煤机的停止顺控 10
3.4 磨煤机启停应注意问题 10
4 磨煤机顺控逻辑优化 12
4.1 磨煤机暖磨过程 12
4.2 磨煤机顺控启动过程 12
4.3 磨煤机顺控启动后 13
4.4 与磨煤机相关的给煤机顺控逻辑优化 13
5 磨煤机启动顺控分析处理方法 15
 5.1控制过程中出现的主要问题及分析处理方法 15
6 结束语 19
参考文献 20
致谢 21

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