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在火电厂中,发电辅助设备能耗费用占电厂运行成本的一定比例,而锅炉引送风机能耗在整个辅机能耗中又占相当大的比重,约占机组总功率的2%～2.5%,在电厂能耗中所占比例很大。引送风机作为电站锅炉重要的辅助设备有不同的运行调节方式,并直接影响其经济运行状况。因此,在保证引送风机适应锅炉负荷变化需要的前提下,尽可能减少因节流而引起的能量损失,降低生产成本,对发电企业来讲显得至关重要。文中结合临沂某发电公司125 MW机组#3炉引送风机设计、运行工况及运行方式分析,论证了锅炉引送风机通过改变调速驱动降低风机功耗,实现锅炉引送风机节能提效的几种改造方案及其可行性建议。
In thermal power plants, the cost of power generation auxiliary equipment accounts for a certain percentage of the operating costs of the power plant, and the energy consumption of the boiler blower fan accounts for a considerable proportion of the total auxiliary energy consumption, accounting for about 2% to 2.5% , A large proportion of the power plant energy consumption. As an important auxiliary equipment for power plant boilers, the draft fan has different operation regulation modes and directly affects its economic operation. Therefore, under the premise of ensuring that the blower fan meets the needs of boiler load changes, minimizing the energy loss caused by throttling and reducing the production cost are very important for power generation enterprises. Based on the analysis of the design, operating conditions and operation modes of the # 3 blast furnace blower of 125 MW unit in a power generation company in Linyi, the paper demonstrates that the boiler blower blower can reduce the fan power consumption by changing the speed regulation drive, Proposal and its feasibility suggestion.