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热力发电  2013 

600mw锅炉热态下水冷壁流量分配特性研究

, PP. 34-39

Keywords: 锅炉,水冷壁,流量分配,调节阀,水动力

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Abstract:

在建立管壁受热模型的基础上,通过对炉内进行区域分段,研究了炉膛内水冷壁沿高度方向上的热负荷分布情况。通过以在水平方向上的热负荷分配系数为媒介,将沿高度方向上的热负荷转变为沿水平方向上的热负荷分布,以水冷壁区段在水平方向上所受热负荷最大和最小两极限位置处为例,进行在热态下水冷壁入口处调节阀开度的计算,提出了通过工质传热系数对工质进行饱和水、汽水混合物、过热蒸汽相态区段的划分,以沿炉周最高负荷位置处(即相对宽度0.54处)水冷壁管为计算基准,计算各相态区段的压降,从而相应调整其他相对位置处阀门的开度使水冷壁各管压差相同,使水冷壁管的水流量带走与之相应的热负荷,保证了热态下水冷壁的水动力稳定性。

References

[1]  张才根,邵国桢,吴本丰.up型锅炉膜式水冷壁的热敏感性[j].锅炉技术,1992(1):1�7.zhangcaigen,shaoguozhen,wubenfeng.heat�reactivityofmembranewaterwallinuptypeboilers[j].boilertechnology,1992(1):1�7(inchinese).
[2]  杨冬,马彦花,潘杰,等.600mw超临界循环流化床锅炉水冷壁动态特性的研究[j].动力工程,2009,29(8):723�727.yangdong,mayanhua,panjie,etal.researchonwaterwalldynamiccharacteristicsofa600mwsupercriticalcirculatingfluidizedbedboiler[j].chinesejournalofpowerengineering,2009,29(8):723�727.
[3]  王为术,徐维晖,顾红芳,等.超超临界锅炉垂直水冷壁温度场的数值计算[j].动力工程,2009,29(8):707�721.wangweishu,xuweihui,guhongfang,etal.numericalcalculationontemperaturefieldsofverticalwaterwallinultra�supercriticalboilers[j].chinesejournalofpowerengineering,2009,29(8):707�721.
[4]  周冬,丁立斌,王国微.600mw超临界锅炉水动力特性分析[j].河北电力技术,2008,27(1):18�20.zhoudong,dinglibin,wangguowei.hydrodynamiccharacteristicanalysison600mwsupercriticalboiler[j].hebeielectricpower,2008,27(1):18�20.
[5]  朱永超.1000t/h直流炉水动力调整方法的研究与实践[j].锅炉技术,1994(7):11�18.zhuyongchao.investigationandapplicationofhydrodynamicadjustmentmethodfor1000t/honce�throughboilers[j].boilertechnology,1994(7):11�18(inchinese).
[6]  张志正,周云龙,石久胜,等.sg�1025�2直流锅炉水冷壁流量在线分配研究与实践[j].热力发电,2003(11):21�23.zhangzhizheng,zhouyunlong,shijousheng,etal.investigationandapplicationofonlinewaterwallflowdistributionforsg�1025�2typeonce�throughboilers[j].thermalpowergeneration,2003(11):21�23(inchinese).
[7]  俞谷颖,朱才广.电站锅炉水动力研究[j].动力工程学报,2011,31(8):590�618.yuguying,zhucaiguang.studyonhydrodynamicperformanceofpowerplantboilers[j].powerengineering,2011,31(8):590�618.
[8]  俞谷颖,张富祥,陈端雨,等.超(超)临界压力锅炉垂直管屏水冷壁水动力与热偏差调整建议[j].动力工程学报,2010,30(9):658�662.yuguying,zhangfuxiagn,chenduanyu,etal.suggestiononadjustmentofhydrodynamicandthermaldeviationofultra�supercriticalpressureboilerwaterwallwithverticaltubepanel[j].chinesejournalofpowerengineering,2010,30(9):658�662.
[9]  李春燕,阎维平,梁秀俊,等.600mw超临界锅炉燃烧器区膜式水冷壁温度场的数值计算[j].动力工程,2008,28(5):677�681.lichunyan,yanweiping,liangxiujun,etal.numericalcalculationofthetemperaturefieldofmembranewaterwallinburnerzoneof600mwsupercriticalboiler[j].journalofpowerengineering,2008,28(5):677�681.
[10]  陈学俊,周芳德,陈立勋,等.管内汽液两相流动摩擦阻力的试验研究[j].动力工程,1989(1):1�6.chenxuejun,zhoufangde,chenlixun,etal.experimentalstudyonfrictionalresistanceofsteam�liquidtwophaseflowinsidetubes[j].journalofpowerengineering,1989(1):1�6(inchinese).
[11]  单昌伦.国产1025t/h直流锅炉水冷壁管爆破原因分析及消除[j].上海电力,1990(1):8�12.shanchanglun.tubeburstofwaterwallinadomestic1025t/honce�throughboiler:reasonanalysisandelimination[j].shanghaielectricpower,1990(1):8�12(inchinese).
[12]  俞谷颖,张富祥,陈端雨,等.超临界直流锅炉炉膛水冷壁布置型式的比较[j].动力工程,2008,28(3):333�338.yuguying,zhangfuxiang,chenduanyu,etal.astudyforcomparisonwaterwallpatternbetweensupercriticalonce�throughboilers[j].journalofpowerengineering,2008,28(3):333�338.
[13]  王为术,徐维晖,李帅帅,等.1000mw超超临界锅炉高热负荷区垂直水冷壁温度特性研究[j].电站系统工程,2011,27(6):9�12.wangweishu,xuweihui,lishuaishuai,etal.powersystemengineering,2011,27(6):9�12.
[14]  樊泉桂.亚临界与超临界参数锅炉[m].北京:中国电力出版社,2000.fanquangui.subcriticalandsupercriticalboilers[m].beijing:chinaelectricpowerpress,2000(inchinese).
[15]  杨冬,陈听宽,唐人虎.考虑汽水两相流动压降时的水冷壁流量偏差系数计算[j].热能动力工程,2001,16(2):172�174.yangdong,chentingkuan,tangrenhu.calculationoftheflowratedeviationfactorofaboilerwaterwallwhenthepressuredropofwater/steamtwophaseflowhasbeentakenintoaccount[j].journalofengineeringforthermalenergyandpower,2001,16(2):172�174.

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