某330 MW汽轮机组自然通风冷却塔改造技术
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摘要
国电宁夏石嘴山发电有限责任公司2号机组因冷却塔喷溅装置、填料等布置方式单一,布水均匀性差,水柱多,缺乏风、水的最佳配比,填料区和配水区的配置缺乏科学性,使得换热效果差,影响机组运行经济性,因此对2号机组冷却塔进行风水配比优化改造,将原有填料更换为GXT-30型高效淋水填料,采用非等高布置方式,提高了换热效率,改造后冷却塔出塔水温下降1. 2℃,冷却塔换热能力提升至原设计值的123. 7%,达到了改造目标,节能效果显著。
In Ningxia Shizuishan Power Generation Co.,Ltd.,Unit 2 is lack of scientific allocation of packing area and water distribution area because of the single arrangement of cooling tower splashing device and packing,the poor uniformity of water distribution column,the lack of the best ratio of wind and water,and the poor heat transfer effect,which affect the operation economy of the unit. For this reason,the cooling tower of unit 2 was reformed by optimizing the ratio of wind and water. The original packing was replaced by GXT-30 high efficiency water spraying packing. The non-equal height arrangement was adopted to improve the heat transfer efficiency. The thermal performance of the cooling tower was tested. After the transformation,the cooling tower water temperature dropped by 1. 2℃. The cooling tower heat transfer capacity was raised to 123. 7 % of the original design value,which reach the goal of transformation.
In Ningxia Shizuishan Power Generation Co.,Ltd.,Unit 2 is lack of scientific allocation of packing area and water distribution area because of the single arrangement of cooling tower splashing device and packing,the poor uniformity of water distribution column,the lack of the best ratio of wind and water,and the poor heat transfer effect,which affect the operation economy of the unit. For this reason,the cooling tower of unit 2 was reformed by optimizing the ratio of wind and water. The original packing was replaced by GXT-30 high efficiency water spraying packing. The non-equal height arrangement was adopted to improve the heat transfer efficiency. The thermal performance of the cooling tower was tested. After the transformation,the cooling tower water temperature dropped by 1. 2℃. The cooling tower heat transfer capacity was raised to 123. 7 % of the original design value,which reach the goal of transformation.
引文
[1]赵振国.冷却塔[M].北京:中国水利水电出版社.1997:16.
[2]赵顺安.冷却塔工艺原理[M].北京:中国建筑工业出版社,2015:32.
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[4]周兰欣,刘正良,弓学敏.湿式冷却塔加装导风管的数值研究[J].华北电力大学学报(自然科学版),2011(6):56-58.
[5]王浩,戴春喜,陶朝胜,等.湿冷机组冷端系统节能诊断方法[J].热力发电,2013,42(12):13-16.
[6]黄俊,陈焱,董楠. 600 MW湿冷机组运行参数优化研究[J].电力科学与工程,2014,30(4),70-75.
[7]陈友良,孙奉仲,高明,等.十字隔墙对湿式冷却塔性能影响的实验研究[J].中国电机工程学报. 2012(11):28-34.
[8]金台,张力,唐磊,等.自然通风湿式冷却塔配水优化的三维数值研究[J].中国电机工程学报. 2012(2):9-15.
[9]杨剑永,张武.大型机组冷却塔节能潜力分析[J].东北电力技术,2010(6):21-24.
[10]赵元宾,孙奉仲,王凯,等.十字隔墙湿式冷却塔冷却特性的数值研究[J].中国电机工程学报. 2009(8):6-14.
[11]周兰欣,蒋波,陈素敏.自然通风湿式冷却塔热力特性数值模拟[J].水利学报. 2009(2):15-18.
[12]赵元宾,孙奉仲,王凯,等.侧风对湿式冷却塔空气动力场影响的数值分析[J].核动力工程. 2008(6):27-30.
[13]赵顺安,廖内平,徐铭.逆流式自然通风冷却塔二维数值模拟优化设计[J].水利学报.2003(10):19-23.
[14]胡三季,陈玉玲,刘廷祥,等.逆流式冷却塔不同高度的PVC淋水填料热力及阻力性能试验研究[J].吉林电力,2003(4):29-34.
[15]贾明晓.国电宁夏石嘴山发电有限责任公司2号4500m2自然通风冷却塔热力性能试验报告[R].西安:西安热工研究院有限公司,2016:12.
[2]赵顺安.冷却塔工艺原理[M].北京:中国建筑工业出版社,2015:32.
[3]中国工程建设标准化协会化工分会.机械通风冷却塔工艺设计规范:GB/T50392-2006.[S].中国计划出版社,2006:13.
[4]周兰欣,刘正良,弓学敏.湿式冷却塔加装导风管的数值研究[J].华北电力大学学报(自然科学版),2011(6):56-58.
[5]王浩,戴春喜,陶朝胜,等.湿冷机组冷端系统节能诊断方法[J].热力发电,2013,42(12):13-16.
[6]黄俊,陈焱,董楠. 600 MW湿冷机组运行参数优化研究[J].电力科学与工程,2014,30(4),70-75.
[7]陈友良,孙奉仲,高明,等.十字隔墙对湿式冷却塔性能影响的实验研究[J].中国电机工程学报. 2012(11):28-34.
[8]金台,张力,唐磊,等.自然通风湿式冷却塔配水优化的三维数值研究[J].中国电机工程学报. 2012(2):9-15.
[9]杨剑永,张武.大型机组冷却塔节能潜力分析[J].东北电力技术,2010(6):21-24.
[10]赵元宾,孙奉仲,王凯,等.十字隔墙湿式冷却塔冷却特性的数值研究[J].中国电机工程学报. 2009(8):6-14.
[11]周兰欣,蒋波,陈素敏.自然通风湿式冷却塔热力特性数值模拟[J].水利学报. 2009(2):15-18.
[12]赵元宾,孙奉仲,王凯,等.侧风对湿式冷却塔空气动力场影响的数值分析[J].核动力工程. 2008(6):27-30.
[13]赵顺安,廖内平,徐铭.逆流式自然通风冷却塔二维数值模拟优化设计[J].水利学报.2003(10):19-23.
[14]胡三季,陈玉玲,刘廷祥,等.逆流式冷却塔不同高度的PVC淋水填料热力及阻力性能试验研究[J].吉林电力,2003(4):29-34.
[15]贾明晓.国电宁夏石嘴山发电有限责任公司2号4500m2自然通风冷却塔热力性能试验报告[R].西安:西安热工研究院有限公司,2016:12.