一、前言随着科学技术日新月异的发展,锅炉自动化程度不断提高。施行锅炉水位自动控制与自动保护,不仅能够保证锅炉安全、经济、可靠的运行,又能够大大改善操作者的劳动条件,提高生产率。维持水位在一定范围之内,是保证锅炉安全运行的必要条件。水位过低,会使锅炉的汽水循环破坏,以致烧坏某些受热面。 I. Introduction With the rapid development of science and technology, the degree of boiler automation has been continuously improved. The implementation of boiler water level automatic control and automatic protection, not only to ensure the boiler safe, economical and reliable operation, but also can greatly improve the working conditions of the operator and improve productivity. To maintain the water level within a certain range, is to ensure the safe operation of the boiler the necessary conditions. Water level is too low, will make the steam boiler cycle destruction, resulting in burning some of the heating surface.