论文部分内容阅读
为保证大型锅炉的稳定运行,应根据工况条件,设计很多调节系统进行自动控制。在调节控制系统中主要有:主蒸汽压力调节,锅炉水位自动调节,炉膛负压,主蒸汽温度,烟中氧等控制。在这些调节系统中,锅炉汽包水位调节是必不可少的,汽包水位是锅炉正常运行的主要指标之一。1汽包“虚假液位”现象的产生锅炉汽包液位是锅炉正常操作时的主要监控项目,水位过高会影响汽包的汽水分离,产生蒸汽带水现象;水位过低,由于汽包容积较小,而负荷却很大,水的汽化速度加快,汽包内的水量迅
In order to ensure the stable operation of large-scale boilers, a lot of regulating systems should be designed for automatic control according to working conditions. In the regulation and control system are: the main steam pressure regulation, automatic adjustment of the boiler water level, the furnace vacuum, the main steam temperature, oxygen and other smoke control. In these regulation systems, boiler drum water level regulation is essential, and drum level is one of the main indicators of normal boiler operation. 1 drum “false liquid level” phenomenon Boiler drum level is the main boiler during normal operation of the monitoring project, the water level is too high will affect the steam drum steam separation, resulting in water with steam phenomenon; water level is too low due to Drum volume smaller, but the load is large, water vaporization speed, the drum of the water quickly