| 300MW机组真空低原因分析与治理 |
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| 引用本文： | 马岩昕,王丽颖,张璨,邵龙飞,赵春梅.300MW机组真空低原因分析与治理[J].内蒙古电力技术,2012,30(5):93-96. |
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| 作者姓名： | 马岩昕 王丽颖 张璨 邵龙飞 赵春梅 |
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| 作者单位： | 黑龙江华电齐齐哈尔热电有限公司,黑龙江 齐齐哈尔,161000 |
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| 摘 要： | 某公司300 MW供热机组低真空保护动作跳闸,再启动后凝汽器真空低。通过开展真空严密性试验、灌水找漏堵漏,以及对凝汽器内轴封供汽母管根部开裂的焊缝进行补焊、在轴封供汽母管根部加装防护罩等工作,解决了凝汽器真空系统的泄漏问题,真空严密性试验时真空下降速度由采取措施前的500 Pa/min降低到采取措施后的80 Pa/min。
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| 关 键 词： | 凝汽器 真空严密性 轴封压力 轴封供汽母管 真空检漏 |
Cause Analysis and Improving Measures for Low Vacuum in 300 MW Units |
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| Ma Yanxin
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Wang Liying
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Zhang Can
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Shao Longfei
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Zhao Chunmei.Cause Analysis and Improving Measures for Low Vacuum in 300 MW Units[J].Inner Mongolia Electric Power,2012,30(5):93-96. |
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| Authors: | Ma Yanxin Wang Liying Zhang Can Shao Longfei Zhao Chunmei |
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| Affiliation: | (Heilongjiang Huadian Qiqihar Power Company,Lmtd.,Heilongjiang Qiqihar 161000) |
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| Abstract: | One 300 MW heating unit＇s protection tripping for low vacuum,while restarted the condenser vacuum was low.Through the development of vacuum tightness test,irrigation for leakage plugging,as well as the repair welding on shaft seal steam supply pipe crack within the condenser,solve the condenser vacuum system leakage problems.Through vacuum tightness testing,vacuum loss speed dropped to 80 Pa/min from 500 Pa/min before taking measures. |
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| Keywords: | condenser vacuum tightness shaft seal pressure seal steam supply pipe vacuum leak detection |
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