垃圾焚烧余热锅炉汽包水位变形的三冲量串级调节  

Cascade-three elements control for WTE boiler drum level

作　　者：陈杨 孙应淳 

机构地区：[1]重庆三峰卡万塔环境产业有限公司,重庆400084

出　　处：《自动化与仪器仪表》2012年第6期176-177,共2页Automation & Instrumentation

摘　　要：由于城市垃圾的组成极为复杂,不像一般燃煤的性质稳定。故在垃圾焚烧发电厂中,若余热锅炉汽包水位采用传统的三冲量控制方式,很难达到生产要求。所以在这次设计中我们重点对汽包水位的自动控制部分的程序进行了多次的改进,以达到调节的需要,解决假水位现象造成的锅筒水位急剧变化问题,同时减少燃料、负荷波动带来的锅筒水位波动,锅筒水位在正常时控制在±10cm以内,外部发生大波动时控制在±30cm以内,保持稳定连续补水过程,并能满足主阀故障时旁路阀的自动调节。The characteristics of the municipal waste are very complicated. In additional, it＇s not constant like the coal, So, it＇s difficult to approach the steady drum level with traditional three elements control. In this study we focus on making improvements on the automatic control of drum level. And to solve the drum level rapid changing because of false water level phenomenon. Meanwhile we will cut down the effective of trash varies and load changing for the drum level. And limiting the change of drum level in ±10cm at normal condition, in ±30cm when the exterior turbulences are rapid, meeting the requirements of backup valve auto-control.

关 键 词：垃圾焚烧 汽包水位变形 三冲量 优化算法 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]