海南琼中抽水蓄能电站2号机组进水阀轴颈密封漏水缺陷分析及处理  

Analysis and Treatment of Water Leakage Defects of Inlet Valve Journal Seal of Unit 2 in Hainan Qiongzhong Pumped-Storage Power Station

作　　者：冯焕 徐明 王志楠 FENG Huan;XU Ming;WANG Zhinan(CSG Power Generation Co.Ltd.,Maintenance and Test Company,Guangzhou 511400,China;Hainan Pumped Storage Power Co.Ltd.,Haikou 570100,China)

机构地区：[1]南方电网调峰调频发电有限公司检修试验分公司,广东省广州市511400 [2]海南蓄能发电有限公司,海南省海口市570100

出　　处：《水电与抽水蓄能》2022年第4期65-67,77,共4页Hydropower and Pumped Storage

摘　　要：针对进水阀轴颈密封出现个别、偶发性漏水而密封外观正常的特殊现象,根据U形密封的结构和工作原理,研究U形密封的失效模式,排查、明确密封漏水原因。通过应用增大U形密封接触压力的改造方案,有效解决了漏水缺陷,验证了缺陷分析结论,相关经验可为大中型进水阀轴颈密封的选型及改造提供参考。The inlet valve journal seal has a special phenomenon of individual and occasional water leakage but the appearance of the seal is normal,according to the structure and working principle of the U-shaped seal,this paper studies the failure modes of U-shaped seals,investigate the cause of the seal leakage.Through the application of the improvement plan to increase the contact pressure of the U-shaped seal,the water leakage defect was effectively solved,and the correctness of the defect analysis was verified.The relevant experience can provide a reference for the selection and transformation of the journal seal of the large and medium-sized inlet valve.

关 键 词：进水阀 轴颈密封 漏水 

分 类 号：TV734.1[水利工程—水利水电工程]