轴流式引风机失速原因分析与应对策略  

Cause analysis and countermeasures on stalling of axial induced draft fan

作　　者：邱长伟 刘维岐 宋大勇 张家维 张志远 唐士明 武超 任百智 QIU Changwei;LIU Weiqi;SONG Dayong;ZHANG Jiawei;ZHANG Zhiyuan;TANG Shiming;WU Chao;REN Baizhi(Guodian Kangping Power Generation Co.,Ltd.,Kangping 110500,China;Guodian Science and Technology Research Institute Co.,Ltd.,Nanjing 210023,China;School of Energy&Architectural Environment Engineering,Henan University of Urban Construction,Pingdingshan 467000,China;Guodian Harbin Thermal Power Co.,Ltd.,Harbin 150000,China)

机构地区：[1]国电康平发电有限公司,辽宁康平110500 [2]国电科学技术研究院有限公司,南京210023 [3]河南城建学院能源与建筑环境工程学院,河南平顶山467000 [4]国电哈尔滨热电有限公司,哈尔滨150000

出　　处：《黑龙江电力》2020年第4期349-352,共4页Heilongjiang Electric Power

摘　　要：针对某电厂600 MW机组超低排放改造及机组深度调峰改造时,轴流式引风机易出现的失速问题进行详细分析。通过引风机性能测试,确定深度调峰工况下易造成引风机失速的原因是烟道阻力的增加及深度调峰工况下烟气量偏低。分析试验结果及设备实际状况,提出增设引风机旁路烟道系统的技术改造方案。通过提高深度调峰工况下流经引风机的烟气量,使引风机实际工况点移至更稳定区域,可解决火电机组深度调峰工况下引风机失速的问题。The stalling problem of axial-flow induced draft fan during ultra-low emission transformation and deep peak shaving transformation of 600 MW unit in a power plant is analyzed in detail.Through the performance test of induced draft fan,it is determined that the reason of induced draft fan stalling under the condition of deep peak shaving is the increase of flue resistance and the decrease of flue gas volume.According to the test results and the actual situation of the equipment,the technical transformation scheme of adding the by-pass flue system of the induced draft fan is put forward.By increasing the amount of flue gas flowing through the induced draft fan under the condition of deep peak shaving,the actual operating point of the induced draft fan is moved to a more stable area,which can solve the problem of induced draft fan stalling under the condition of deep peak shaving of thermal power units.

关 键 词：轴流式风机 深度调峰 失速 旁路烟道 烟气阻力 

分 类 号：TM621[电气工程—电力系统及自动化]