某330 MW机组送风机喘振跳闸分析
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摘要
为解决某330 MW机组配置的FAF22.4-12.5-1型动叶可调轴流式送风机喘振跳闸问题,对机组历史运行数据、风道阻力及风机出力进行分析。结果表明,送风机喘振的直接原因是,炉膛压力偏高及二次风箱压差偏大导致高负荷时送风机出口风道阻力增大。提出了有效预防送风机喘振的措施,包括运行过程中控制两侧送风机运行参数在合理范围、保持炉膛压力调整为微负压状态和同时保持二次风箱压差控制在规定值内,有效解决了运行过程中送风机喘振问题。
The historical operation data,air tunnel resistance and the blower output were analyzed,in view of the problem of the forced draught blower surge and tripping operation on the FAF22.4-12.5-1 type blade adjustable axial flow blower for a 300 MW unit.This paper shows that the direct causes of the blower surge are the high pressure of the furnace and the pressure difference of the secondary air box,which are the main reasons for the increased resistance of the air outlet of the blower.The effective measures for preventing the blower surge are provided,including the reasonable parameters of both sides of the forced draught blowers during operation,the micro negative furnace pressure,and the pressure difference of the secondary air box controlled at the specified value.
The historical operation data,air tunnel resistance and the blower output were analyzed,in view of the problem of the forced draught blower surge and tripping operation on the FAF22.4-12.5-1 type blade adjustable axial flow blower for a 300 MW unit.This paper shows that the direct causes of the blower surge are the high pressure of the furnace and the pressure difference of the secondary air box,which are the main reasons for the increased resistance of the air outlet of the blower.The effective measures for preventing the blower surge are provided,including the reasonable parameters of both sides of the forced draught blowers during operation,the micro negative furnace pressure,and the pressure difference of the secondary air box controlled at the specified value.
引文
[1] 吴洪波,姜家渊.锅炉风机运行中常见故障的原因分析及处理[J].中国电力,2005,38(2):36-39.WU Hong-bo,JIANG Jia-yuan.Analyses and solutions of common failures in fan operation[J].Electric Power,2005,38(2):36-39.
[2] 李春宏.轴流风机失速与喘振分析及其处理[J].热力发电,2005,37(3):76-78.LI Chun-hong.Analysis of stall and surge for axial-flow fans and treatment thereof[J].Thermal Power Generation,2005,37(3):76-78.
[3] 张广东.轴流风机喘振的原因分析及应对措施[J].华电技术,2011,33(5):10-12.ZAHNG Guang-dong.Analysis on surging reasons of axial flow fan and countermeasures[J].Huadian Technology,2011,33(5):10-12.
[4] 常勇.轴流风机喘振预警系统研究[D].北京:华北电力大学,2017.CHANG Yong.Research on surge prediction system of axial fan.[D].Beijing:North China Electric Power University,2017.
[5] 王印松,李珂,郑渭建,等.660 MW超临界机组优化改造后RB试验技术分析[J].热能动力工程,2017,32(2):95-100.WANG Yin-song,LI Ke,ZHENG Wei-jian,et al.Technical analysis of the RB test on the 660 MW supercritical unit after optimization and reconstruction[J].Journal of Engineering for Thermal Energy and Power,2017,32(2):95-100.
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[8] 宁献武,赵继良,伍健伟.1 000 MW机组一次风机喘振原因分析及预防措施[J].东北电力技术,2012(1):39-41.NING Xian-wu,ZHAO Ji-liang,WU Jian-wei.Analysis and solution of primary fan surge in a 1 000 MW unit[J].Northeast Electric Power Technology,2012(1):39-41.
[9] 马少栋,李春曦,王欢,等.动叶可调轴流风机失速与喘振现象及其预防措施[J].电力科学与工程,2010,26(7):33-37.MA Shao-dong,LI Chun-xi,WANG Huan,et al.Investigation and preventive measures of stall and surge in variable pitch axial fans[J].Electric Power Science and Engineering,2010,26(7):33-37.
[10] 冯宗田,曹磊,蔺晶.轴流式一次风机喘振的控制与预防[J].中国电力,2011,44(6):22-25.FENG Zong-tian,CAO Lei,LIN Jing.Control and prevention of surge in axial primary air fan[J].Electric Power,2011,44(6):22-25.
[11] 靖长财.1 175 t/h锅炉送风机喘振原因分析及预防措施[J].锅炉技术,2004,35(6):67-70.JING Chang-cai.Reason analyses and preventive measures of 1 175 t/h boiler forced-draft fan surging[J].Boiler Technology,2004,35(6):67-70.
[12] 唐子鹏.700 MW机组带630 MW时送风机喘振原因分析及处理[J].广西电力,2002(3):57-58.TANG Zi-peng.Surging of forced draft fan on 700 MW turbine operation at 630 MW[J].Guangxi Electric Power,2002(3):57-58.
[13] 刘扬波,陈鑫水,刘志东.珠海发电厂轴流式送风机喘振报警浅析[J].广东电力,2005,18(1):42-44.LIU Yang-bo,CHEN Xin-shui,LIU Zhi-dong.Analysis on surge alarm of axial-flow forced fan in Zhuhai Power Station[J].Guangdong Electric Power,2005,18(1):42-44.
[14] 黄伟,谢国鸿,宾谊沅,等.大型锅炉引风机失速、喘振异常的分析与探讨[J].电站系统工程,2009,25(4):27-30.HUANG Wei,XIE Guo-hong,BING Yi-yuan,et al.Analysis and research on stalling and surging abnormity of large boiler ID fan[J].Power System Engineering,2009,25(4):27-30.
[15] 吴洪波,姜家渊.锅炉风机运行过程中常见故障的原因分析及其处理[J].电站辅机,2005,93(2):42-45.WU Hong-bo,JIANG Jia-yuan.Analysis of common troubles of boiler blower during operation and its countermeasures[J].Power Station Auxiliary Equipment,2005,93(2):42-45.
[2] 李春宏.轴流风机失速与喘振分析及其处理[J].热力发电,2005,37(3):76-78.LI Chun-hong.Analysis of stall and surge for axial-flow fans and treatment thereof[J].Thermal Power Generation,2005,37(3):76-78.
[3] 张广东.轴流风机喘振的原因分析及应对措施[J].华电技术,2011,33(5):10-12.ZAHNG Guang-dong.Analysis on surging reasons of axial flow fan and countermeasures[J].Huadian Technology,2011,33(5):10-12.
[4] 常勇.轴流风机喘振预警系统研究[D].北京:华北电力大学,2017.CHANG Yong.Research on surge prediction system of axial fan.[D].Beijing:North China Electric Power University,2017.
[5] 王印松,李珂,郑渭建,等.660 MW超临界机组优化改造后RB试验技术分析[J].热能动力工程,2017,32(2):95-100.WANG Yin-song,LI Ke,ZHENG Wei-jian,et al.Technical analysis of the RB test on the 660 MW supercritical unit after optimization and reconstruction[J].Journal of Engineering for Thermal Energy and Power,2017,32(2):95-100.
[6] 杨飞.火电厂轴流风机典型故障原因及应急处置方法[J].神华科技,2017,15(12):62-66.YANG Fei.Typical faults reason of axial-flow fan in thermal power plant and its emergency disposal methods[J].Northwest Coal,2017,15(12):62-66.
[7] 魏兵海,吴克启.风机失速喘振特性及其预防措施[J].流体机械,2001,29(6):28-31.WEI Bing-hai,WU Ke-qi.Discussion on stall surging characteristic and its prevention measure[J].Fluid Machinery,2001,29(6):28-31.
[8] 宁献武,赵继良,伍健伟.1 000 MW机组一次风机喘振原因分析及预防措施[J].东北电力技术,2012(1):39-41.NING Xian-wu,ZHAO Ji-liang,WU Jian-wei.Analysis and solution of primary fan surge in a 1 000 MW unit[J].Northeast Electric Power Technology,2012(1):39-41.
[9] 马少栋,李春曦,王欢,等.动叶可调轴流风机失速与喘振现象及其预防措施[J].电力科学与工程,2010,26(7):33-37.MA Shao-dong,LI Chun-xi,WANG Huan,et al.Investigation and preventive measures of stall and surge in variable pitch axial fans[J].Electric Power Science and Engineering,2010,26(7):33-37.
[10] 冯宗田,曹磊,蔺晶.轴流式一次风机喘振的控制与预防[J].中国电力,2011,44(6):22-25.FENG Zong-tian,CAO Lei,LIN Jing.Control and prevention of surge in axial primary air fan[J].Electric Power,2011,44(6):22-25.
[11] 靖长财.1 175 t/h锅炉送风机喘振原因分析及预防措施[J].锅炉技术,2004,35(6):67-70.JING Chang-cai.Reason analyses and preventive measures of 1 175 t/h boiler forced-draft fan surging[J].Boiler Technology,2004,35(6):67-70.
[12] 唐子鹏.700 MW机组带630 MW时送风机喘振原因分析及处理[J].广西电力,2002(3):57-58.TANG Zi-peng.Surging of forced draft fan on 700 MW turbine operation at 630 MW[J].Guangxi Electric Power,2002(3):57-58.
[13] 刘扬波,陈鑫水,刘志东.珠海发电厂轴流式送风机喘振报警浅析[J].广东电力,2005,18(1):42-44.LIU Yang-bo,CHEN Xin-shui,LIU Zhi-dong.Analysis on surge alarm of axial-flow forced fan in Zhuhai Power Station[J].Guangdong Electric Power,2005,18(1):42-44.
[14] 黄伟,谢国鸿,宾谊沅,等.大型锅炉引风机失速、喘振异常的分析与探讨[J].电站系统工程,2009,25(4):27-30.HUANG Wei,XIE Guo-hong,BING Yi-yuan,et al.Analysis and research on stalling and surging abnormity of large boiler ID fan[J].Power System Engineering,2009,25(4):27-30.
[15] 吴洪波,姜家渊.锅炉风机运行过程中常见故障的原因分析及其处理[J].电站辅机,2005,93(2):42-45.WU Hong-bo,JIANG Jia-yuan.Analysis of common troubles of boiler blower during operation and its countermeasures[J].Power Station Auxiliary Equipment,2005,93(2):42-45.