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华北油田某集中供热中心(以下称供热中心)供暖面积45万m~2,拥有3台15t/h链条锅炉,2台160kw循环水泵(一用一备),配备DCS系统。2010年,供热中心利用DCS系统实现了分时变流量的自动调节功能,在试运行期间由于考虑不充分,导致试运行期间锅炉工作压力变化剧烈,给锅炉运行带来安全隐患。经分析、改进后,分时变流量调节方式运行稳定,节
A central heating center of Huabei Oilfield (hereinafter referred to as the heating center) heating area of 450,000 m ~ 2, with three 15t / h chain boiler, two 160kw circulating pump (one with one prepared), equipped with DCS system. In 2010, the heating center realized the automatic adjustment function of time-varying variable flow by using the DCS system. Due to insufficient consideration during the trial operation, the boiler working pressure during the trial operation changed drastically, which brought potential safety hazard to the boiler operation. The analysis, improvement, time-sharing variable flow control mode of operation, section