|本期目录/Table of Contents|

[1]赵伟铎,刘玉新,杜博超,等. 大型汽轮发电机环形引线汽堵故障分析[J].电机与控制学报,2014,18(04):39-44.
 ZHAO Wei-duo,LIU Yu-xin,DU Bo-chao,et al. Analysis of steam blockage faults of large turbogenerator circular lead[J].,2014,18(04):39-44.
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 大型汽轮发电机环形引线汽堵故障分析
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
18
期数:
2014年04
页码:
39-44
栏目:
出版日期:
2014-04-15

文章信息/Info

Title:
 Analysis of steam blockage faults of large turbogenerator circular lead
作者:
 赵伟铎 刘玉新 杜博超 崔淑梅
1. 哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001;
2.哈尔滨电气动力装备有限公司,黑龙江哈尔滨150001
Author(s):
 ZHAO Wei-duo1 LIU Yu-xin2 DU Bo-chao1 CUI Shu-mei1
 1. School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China;
2. Harbin Electric Power Equipment Co. Ltd,Harbin 150001,China
关键词:
 汽轮发电机 环形引线 汽堵 故障 共轭传热
Keywords:
 turbogenerator circular lead steam blockage faults conjugate heat transfer
分类号:
-
DOI:
-
文献标志码:
A
摘要:
 大型汽轮发电机定子环形引线在不当的安装操作下容易引发汽堵故障堵塞水路,造成引线
损毁甚至引发停机事故。该文针对具体事故案例,基于计算流体力学方法,建立引线及其冷却水的
流固耦合共轭传热仿真模型,计算两起事故外接连通管错误接法下环形引线及其冷却水的温度场,
分析温度特征与水路堵塞程度之间的对应关系。计算及分析结果表明,外接连通管错接后冷却水
流量过低是导致汽堵故障的直接原因,汽堵发生后约半小时通风不良处的引线开始熔断。在此基
础上,提出严格按照说明安装水路水管及加装温度与流量监测装置的预防和改进措施。
Abstract:
 Steam blockage faults inside the circular lead of large turbogenerators,which initiated by some
installation mistakes,will burn the lead and cause a non-normal shutdown accident. According to specific
fault cases,the conjugate heat transfer model of the lead and its cooling water was constructed in this paper,
based on the computational fluid dynamics. Thermal field of the lead and its water under a wrong return
pipe connection was calculated,and then the relationship between temperature characteristics and
the degree of blockage was analyzed. The calculation and analysis results indicated that,the abnormal
low flow rate caused by a wrong return pipe connection was the direct reason of steam blockage. The lead
began to melt about 30 min after the formation of steam blockage. On this basis,this paper suggests a
normative installation and extra thermal and flow monitor devices to prevent faults.

参考文献/References:

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备注/Memo

备注/Memo:
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更新日期/Last Update: 2014-11-25