亚临界600 MW汽轮机通流改造技术方案研究与应用
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摘要
介绍了宁电亚临界600 MW汽轮机通流改造技术方案的研究与应用情况。首先,分析了宁电亚临界600 MW机组改造前性能和存在的问题,确定了改造前汽轮机性能和出力状况。其次,调研了国内亚临界300 MW汽轮机通流改造业绩,以及各通流改造厂商的性能保证值,并进行了热力校核计算,分析得出亚临界600 MW汽轮机改造后可达到的性能指标。最后,针对制造厂提供的通流改造方案,提出了冷端优化、末级叶片选型等优化设计方案,从而确定了改造的最终方案。改造后性能试验表明,汽轮机热耗率降低了332 kJ/(kW·h),经济效益显著。
In this paper, the research and application of flow path retrofit upgrade of the subcritical 600 MW turbine in Ninghai Power Plant are introduced. Firstly, the performance and the existing problems of the subcritical 600 MW unit are analyzed, and the output status of the turbine before the upgrade is determined. Secondly, the achievements of the 300 MW steam turbine flow path retrofit upgrade projects in China and the guaranteed performance data from the manufacturers are studied; the thermal checking caluclation is conducted to get the expected performance index of the subcritical 600 MW steam turbine after the upgrade. Finally, the optimized design schemes, such as the cold end optimization and the final stage blade selection, are proposed after considering the upgrade schemes provided by the manufacturer to determinethe final scheme. With the flow path retrofit, the specific heat consumptionof the steam turbine is reduced by 332 kJ/(kW·h), and the economic benefit is remarkable.
In this paper, the research and application of flow path retrofit upgrade of the subcritical 600 MW turbine in Ninghai Power Plant are introduced. Firstly, the performance and the existing problems of the subcritical 600 MW unit are analyzed, and the output status of the turbine before the upgrade is determined. Secondly, the achievements of the 300 MW steam turbine flow path retrofit upgrade projects in China and the guaranteed performance data from the manufacturers are studied; the thermal checking caluclation is conducted to get the expected performance index of the subcritical 600 MW steam turbine after the upgrade. Finally, the optimized design schemes, such as the cold end optimization and the final stage blade selection, are proposed after considering the upgrade schemes provided by the manufacturer to determinethe final scheme. With the flow path retrofit, the specific heat consumptionof the steam turbine is reduced by 332 kJ/(kW·h), and the economic benefit is remarkable.
引文
[1]赵杰,朱立彤.300 MW等级汽轮机通流部分改造综述[J].热力透平,2011,40(1):39-42.ZHAO Jie,ZHU Litong.Review of flow path retrofit of 300 MWclass steam turbines[J].Thermal Turbine,2011,40(1):39-42.
[2]洪昌少,段小云.国产引进型300 MW汽轮机的通流改造[J].华电技术,2011,33(5):47-50.HONG Changshao,DUAN Xiaoyun.Reformation of flow passage for introduce type domestic 300 MW steam turbin[J].Huadian Techndogy,2011,33(5):47-50.
[3]蔡文方,吴文健,应光耀,等.300 MW机组通流改造后汽流激振故障的分析与处理[J].汽轮机技术,2016,58(1):69-71.CAI Wenfang,WU Wenjian,YING Guangyao,et al.Analysis and treatment of steam-excited vibration after retrofitting flow path of300 MW steam turbine[J].Turbine Technology,2016,58(1):69-71.
[4]裴东升,刘晓宏,王伟锋,等.GE公司350 MW汽轮机通流改造及优化研究[J].汽轮机技术,2015(5):396-398.PEI Dongsheng,LIU Xiaohong,WANG Weifeng,et al.Study on optimization of retrofit of GE manufactured 350 MW steam turbine[J].Turbine Technology,2015(5):396-398.
[5]谭锐,徐星,邵峰,等.300 MW等级亚临界汽轮机通流改造综述[J].汽轮机技术,2017,59(4):291-294.TAN Rui,XU Xing,SHAO Feng,et al.Review of the flow path retrofit of 300 MW class subcritical steam turbine[J].Turbine Technology,2017,59(4):291-294.
[6]杨群发.沙角发电A厂200 MW汽轮机低压缸通流部分的改造[J].广东电力,2000,13(5):49-51.YANG Qunfa.Flow path remaking for LP cylinder of 200 MWsteam turbine in Shajiao A Power Station[J].Guangdong Electric Power,2000,13(5):49-51.
[7]曾庆娟.300 MW等级汽轮机通流改造的叶片设计特点[J].热力透平,2013,42(3):168-170.ZENG Qingjuan.Blade design features of flow path retrofit for 300MW class steam turbines[J].Thermal Turbine,2013,42(3):168-170.
[8]苏猛业.平圩600 MW汽轮机通流改造实施方案[J].电力设备,2006,7(6):69-73.SU Mengye.Retrofit scheme of flow part of 600 MW steam turbine in Pingwei power plant[J].Electrical Equipment,2006,7(6):69-73.
[9]包伟伟,任伟,徐国林,等.600 MW亚临界汽轮机通流改造的热力设计[J].汽轮机技术,2016,58(3):161-164.BAO Weiwei,REN Wei,XU Guolin,et al.Thermal design of flow path retrofit for a 600 MW steam turbine[J].Turbine Technology,2016,58(3):161-164.
[10]包伟伟,张启林,任伟,等.800 MW汽轮机通流改造的热力设计[J].浙江电力,2016,35(4):41-45.BAO Weiwei,ZHANG Qilin,REN Wei,et al.Thermal design of flow path retrofit for a 800 MW steam turbine[J].Zhejiang Electric Power,2016,35(4):41-45.
[11]张丰.盘山电厂600 MW亚临界机组通流改造[J].能源与节能,2013(9):91-93.ZHANG Feng.Throughflow retrofit of 600 MW supercritical steam turbine based on imported technology[J].Energy and Energy Conservation,2013(9):91-93.
[12]顾扬彪,何志瞧.采用引进技术的600 MW超临界机组汽轮机通流改造[J].浙江电力,2017,36(4):45-48.GU Yangbiao,HE Zhiqiao.Throughflow retrofit of 600 MWsupercritical steam turbine based on imported technology[J].Zhejiang Electric Power,2017,36(4):45-48.
[13]王培红,吕沥峰.汽轮机热力系统的节能改造与回热效果评价[J].汽轮机技术,2000,42(6):344-348.WANG Peihong,LU Lifeng.Improving the thermal system of turbines and evaluating the performance of steam cycles[J].Turbine Technology,2000,42(6):344-348.
[14]樊泽国,刘建清,栗东升,等.汽轮机冷端节能改造方式分析[J].内蒙古电力技术,2015,33(6):30-33.FAN Zeguo,LIU Jianqing,LI Dongsheng,et al.Energy-saving reformation methods analysis on cool-side of steam turbine[J].Inner Mongolia Electric Power,2015,33(6):30-33.
[15]高登攀,牛志军,程代京,等.提高火电厂汽轮机组性能技术研究与应用[J].中国电力,2014,47(11):20-25.GAO Dengpan,NIU Zhijun,CHENG Daijing,et al.Applications on the technical enhancement of turbine performance in thermal power plant[J].Electric Power,2014,47(11):20-25.
[16]王学栋,王学同,陈义森.老式凝汽器运行现状分析与节能改造[J].汽轮机技术,2007,49(4):308-311.WANG Xuedong,WANG Xuetong,CHEN Yisen.Analysis of operational status of old condenser and energy saving reform[J].Turbine Technology,2007,49(4):308-311.
[17]梁卓文,樊怀武,李庆华.500 MW汽轮机组节能改造应用[J].山西电力,2013(3):43-46.LIANG Zhuowen,FAN Huaiwu,LI Qinghua.The application of 500MW steam turbine energy saving reformation[J].Shanxi Electric Power,2013(3):43-46.
[18]李权,莫才颂.华能汕头电厂600 MW凝汽器节能改造分析[J].液压气动与密封,2015(5):47-49.LI Quan,MO Caisong.Energy-saving transformation analysis of 600MW condenser for huaneng shantou power[J].Hydraulics Pneumatics&Seals,2015(5):47-49.
[19]李明,黄丕维,焦庆丰,等.汽轮机通流部分节能改造及应用效果[J].湖南电力,2008,28(1):35-37.LI Ming,HUANG Piwei,JIAO Qingfeng,et al.Energy saving modification of steam turbine pass-through section and application effect[J].Hunan Electric Power,2008,28(1):35-37.
[2]洪昌少,段小云.国产引进型300 MW汽轮机的通流改造[J].华电技术,2011,33(5):47-50.HONG Changshao,DUAN Xiaoyun.Reformation of flow passage for introduce type domestic 300 MW steam turbin[J].Huadian Techndogy,2011,33(5):47-50.
[3]蔡文方,吴文健,应光耀,等.300 MW机组通流改造后汽流激振故障的分析与处理[J].汽轮机技术,2016,58(1):69-71.CAI Wenfang,WU Wenjian,YING Guangyao,et al.Analysis and treatment of steam-excited vibration after retrofitting flow path of300 MW steam turbine[J].Turbine Technology,2016,58(1):69-71.
[4]裴东升,刘晓宏,王伟锋,等.GE公司350 MW汽轮机通流改造及优化研究[J].汽轮机技术,2015(5):396-398.PEI Dongsheng,LIU Xiaohong,WANG Weifeng,et al.Study on optimization of retrofit of GE manufactured 350 MW steam turbine[J].Turbine Technology,2015(5):396-398.
[5]谭锐,徐星,邵峰,等.300 MW等级亚临界汽轮机通流改造综述[J].汽轮机技术,2017,59(4):291-294.TAN Rui,XU Xing,SHAO Feng,et al.Review of the flow path retrofit of 300 MW class subcritical steam turbine[J].Turbine Technology,2017,59(4):291-294.
[6]杨群发.沙角发电A厂200 MW汽轮机低压缸通流部分的改造[J].广东电力,2000,13(5):49-51.YANG Qunfa.Flow path remaking for LP cylinder of 200 MWsteam turbine in Shajiao A Power Station[J].Guangdong Electric Power,2000,13(5):49-51.
[7]曾庆娟.300 MW等级汽轮机通流改造的叶片设计特点[J].热力透平,2013,42(3):168-170.ZENG Qingjuan.Blade design features of flow path retrofit for 300MW class steam turbines[J].Thermal Turbine,2013,42(3):168-170.
[8]苏猛业.平圩600 MW汽轮机通流改造实施方案[J].电力设备,2006,7(6):69-73.SU Mengye.Retrofit scheme of flow part of 600 MW steam turbine in Pingwei power plant[J].Electrical Equipment,2006,7(6):69-73.
[9]包伟伟,任伟,徐国林,等.600 MW亚临界汽轮机通流改造的热力设计[J].汽轮机技术,2016,58(3):161-164.BAO Weiwei,REN Wei,XU Guolin,et al.Thermal design of flow path retrofit for a 600 MW steam turbine[J].Turbine Technology,2016,58(3):161-164.
[10]包伟伟,张启林,任伟,等.800 MW汽轮机通流改造的热力设计[J].浙江电力,2016,35(4):41-45.BAO Weiwei,ZHANG Qilin,REN Wei,et al.Thermal design of flow path retrofit for a 800 MW steam turbine[J].Zhejiang Electric Power,2016,35(4):41-45.
[11]张丰.盘山电厂600 MW亚临界机组通流改造[J].能源与节能,2013(9):91-93.ZHANG Feng.Throughflow retrofit of 600 MW supercritical steam turbine based on imported technology[J].Energy and Energy Conservation,2013(9):91-93.
[12]顾扬彪,何志瞧.采用引进技术的600 MW超临界机组汽轮机通流改造[J].浙江电力,2017,36(4):45-48.GU Yangbiao,HE Zhiqiao.Throughflow retrofit of 600 MWsupercritical steam turbine based on imported technology[J].Zhejiang Electric Power,2017,36(4):45-48.
[13]王培红,吕沥峰.汽轮机热力系统的节能改造与回热效果评价[J].汽轮机技术,2000,42(6):344-348.WANG Peihong,LU Lifeng.Improving the thermal system of turbines and evaluating the performance of steam cycles[J].Turbine Technology,2000,42(6):344-348.
[14]樊泽国,刘建清,栗东升,等.汽轮机冷端节能改造方式分析[J].内蒙古电力技术,2015,33(6):30-33.FAN Zeguo,LIU Jianqing,LI Dongsheng,et al.Energy-saving reformation methods analysis on cool-side of steam turbine[J].Inner Mongolia Electric Power,2015,33(6):30-33.
[15]高登攀,牛志军,程代京,等.提高火电厂汽轮机组性能技术研究与应用[J].中国电力,2014,47(11):20-25.GAO Dengpan,NIU Zhijun,CHENG Daijing,et al.Applications on the technical enhancement of turbine performance in thermal power plant[J].Electric Power,2014,47(11):20-25.
[16]王学栋,王学同,陈义森.老式凝汽器运行现状分析与节能改造[J].汽轮机技术,2007,49(4):308-311.WANG Xuedong,WANG Xuetong,CHEN Yisen.Analysis of operational status of old condenser and energy saving reform[J].Turbine Technology,2007,49(4):308-311.
[17]梁卓文,樊怀武,李庆华.500 MW汽轮机组节能改造应用[J].山西电力,2013(3):43-46.LIANG Zhuowen,FAN Huaiwu,LI Qinghua.The application of 500MW steam turbine energy saving reformation[J].Shanxi Electric Power,2013(3):43-46.
[18]李权,莫才颂.华能汕头电厂600 MW凝汽器节能改造分析[J].液压气动与密封,2015(5):47-49.LI Quan,MO Caisong.Energy-saving transformation analysis of 600MW condenser for huaneng shantou power[J].Hydraulics Pneumatics&Seals,2015(5):47-49.
[19]李明,黄丕维,焦庆丰,等.汽轮机通流部分节能改造及应用效果[J].湖南电力,2008,28(1):35-37.LI Ming,HUANG Piwei,JIAO Qingfeng,et al.Energy saving modification of steam turbine pass-through section and application effect[J].Hunan Electric Power,2008,28(1):35-37.