发电机定冷水流量的标定与分析
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摘要
发电机定冷水流量的标定直接关系到机组安全稳定运行,对定冷水流量的标定和测量方法进行了分析,并提出了广义流量孔板系数的方法。依据流量和压差的计算关系式为理论基础,重新对发电机定冷水的流量进行了标定。采用新方法标定流量后,明显减小了定冷水流量与实测流量的误差,且方法简单,适用范围广。
The calibration of the generator stator cooling water flow of generator is directly related to the safe and stable operation of the unit.The calibration and measurement method of the stator cooling water flow are analyzed,and the method of generalized orifice coefficient of flow is proposed.Based on the calculation formula of flow rate and pressure difference,the flow rate of generator stator cooling water was calibrated again.After using the new method to calibrate the flow rate,the error between the fixed cold water flow rate and the measured flow rate is obviously reduced,and the method is simple and has a wide application range.
The calibration of the generator stator cooling water flow of generator is directly related to the safe and stable operation of the unit.The calibration and measurement method of the stator cooling water flow are analyzed,and the method of generalized orifice coefficient of flow is proposed.Based on the calculation formula of flow rate and pressure difference,the flow rate of generator stator cooling water was calibrated again.After using the new method to calibrate the flow rate,the error between the fixed cold water flow rate and the measured flow rate is obviously reduced,and the method is simple and has a wide application range.
引文
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[13]宁慧丽.某电厂发电机定子内冷水流量低信号误动探究[J].电子测试,2015(19):94:95.
[14]刘志勇,林琳.某型燃气轮机内冷水系统的优化改造[J].电站辅机,2016,37(6):9-12.
[15]孙本达,刘涛,张广文.一种新的发电机内冷却水处理技术[J].热力发电,2011(10):78-80.
[2]肖永亮.350MW超临界发电机组断水保护系统的可靠性分析与改进[J].科技创新导报,2016.13(8):78-79.
[3]郭志海.定冷水泵故障分析及改造[J]热力发电,2012,41(5):119-121.
[4]周仲康,苗雅丽,黄莉.发电机内冷水处理方法及系统运维[J].安徽电力,2014(12):15-20.
[5]李浩良,潘剑南,李晓刚.1 000MW汽轮发电机定子冷却水系统化学清洗技术[J].大电机技术,2017(6):5-9.
[6]马军.汽轮发电机定子绕组内冷水路漏点检测及预防{J}.东方电气评论,2017,31(4):41-48.
[7]石兰,吕吉明.断水保护差压开关取样管改造[J].科技创新与应用,2016(35):115.
[8]王博,董继先,陆琦.一种新的差压式流量计标定方法[J].化工自动化及仪表,2010,37(8):66-68.
[9]王晓明.哈电-东芝1 000MW汽轮发电机定子冷却水系统技术分析[J].电站系统工程,2010(7):50-53.
[10]李杰,张军武,王航.浅谈差压式流量计的流量计算[J].自动化仪表,2013(7):89-91.
[11]王红兵邱向利.汽轮发电机定子内冷水系统流量测量方法建议[J].电机技术,2015(2):61-62.
[12]刘永兵,韩广威,龙国军等.发电机定子冷却水系统化学清洗技术[J].热力发电,2012(8):104-106.
[13]宁慧丽.某电厂发电机定子内冷水流量低信号误动探究[J].电子测试,2015(19):94:95.
[14]刘志勇,林琳.某型燃气轮机内冷水系统的优化改造[J].电站辅机,2016,37(6):9-12.
[15]孙本达,刘涛,张广文.一种新的发电机内冷却水处理技术[J].热力发电,2011(10):78-80.