本文在论述了工业链条锅炉经济运行的关键技术后,为了实现炉内最佳燃烧与最佳传热的统一,研究了变氧量燃烧和炉内负压随负荷变化而改变的调节规律,并通过设置软开关实现了蒸气压力恒定与炉膛温度控制的自动切换.最后介绍了根据以上调节规律设计的 GRK 计算机控制系统.该系统自投运以来取得了良好的经济效益. After discussing the key technology of industrial chain boiler economic operation, in order to unify the best combustion and best heat transfer in the furnace, the regulation of the variable oxygen combustion and the furnace negative pressure changing with the load changes were studied. The soft switch is adopted to realize the automatic switch between the vapor pressure and the furnace temperature control.Finally, the GRK computer control system designed according to the regulation above is introduced.The system has achieved good economic benefits since it was put into operation.