万家寨水电站调速器感压阀故障分析与处理
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摘要
通过万家寨水电站调速器感压阀的结构、工作原理对感压阀的故障进行了系统的分析,发现感压阀故障主要是由于油中的杂质导致感压阀发卡,无法在空载和负载之间进行自动切换。通过清洗阀芯及其连接管路、更换滤芯、滤油等工作,去除油中杂质。同时,为了避免感压阀较长时间处于空载侧或负载侧对设备造成危害,我们对感压阀所在的空载系统进行了一定的改造,通过改造和去除油中杂质的方法,解决了感压阀存在的故障问题。
The fault of the pressure sensing valve was systematically analyzed in accordance with the structure and working principle of the pressure sensing valve of the governor of Wanjiazhai Hydropower Station. It was found that the fault of the pressure sensing valve was mainly caused by the impurities in the oil,which caused the pressure sensing valve to be stuck closed and unable to automatically switch between no-load and load state. The impurities were removed from the oil by cleaning the valve plug and its connecting pipelines,replacing the filter element,and oil filtering. Meanwhile,in order to avoid the damage to the equipment in case that the pressure sensing valve is over-operated under no-load or load state,modifications have been made to the no-load system where the pressure sensing valve is installed,and solved the failure problem of the pressure sensing valve by modifying the no-load system and removing the impurities in the oil.
The fault of the pressure sensing valve was systematically analyzed in accordance with the structure and working principle of the pressure sensing valve of the governor of Wanjiazhai Hydropower Station. It was found that the fault of the pressure sensing valve was mainly caused by the impurities in the oil,which caused the pressure sensing valve to be stuck closed and unable to automatically switch between no-load and load state. The impurities were removed from the oil by cleaning the valve plug and its connecting pipelines,replacing the filter element,and oil filtering. Meanwhile,in order to avoid the damage to the equipment in case that the pressure sensing valve is over-operated under no-load or load state,modifications have been made to the no-load system where the pressure sensing valve is installed,and solved the failure problem of the pressure sensing valve by modifying the no-load system and removing the impurities in the oil.
引文
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[2]涂冬梅.浅谈空载系统在调速系统中的应用[J].企业技术开发,2011(10):109.
[3]金波,朱世强,张光琼,等.水轮机调速器并联型液压控制系统[J].动力工程,2001(03):1272.
[4]邹霖.西溪电站2号机组调速器系统油温过高分析与处理[J].小水电,2012(03):57-58.
[5]徐灏,蔡春源,严隽琪,等.机械设计手册[M].北京:机械工业出版社,2000.
[6]中华人民共和国国家质量监督验检疫总局,国家标准化管理委员会.水轮机控制系统技术条件:GB/T 9652. 1-2007[S].北京:中国标准出版社,2008.
[7]蒋克文,余纪伟,朱军,等.水轮机调速器液压系统仿真研究[J].水电厂自动化,2006(01):1255.
[8]中华人民共和国国家质量监督验检疫总局,国家标准化管理委员会.水轮发电机组安装技术规范:GB/T 8564-2003[S].北京:中国标准出版社,2004.
[9]崔新民,赵建龙.水轮机调速器改造分析[J].中国水能及电气化,2009(03):2.
[10]李长灿.水轮机调速器介绍与故障分析及应对策略[J].红水河,2015(01):47-48.
[11]陶纪军,瞿森森.水布垭电厂调速器油压系统控制及维护分析[J].西北水电,2012(03):216-217.
[12]李生军.调速器发生卡响的故障分析[J].甘肃电力技术,2002(03):45-46.
[13]向文平,陈勇旭,李军路.瀑布沟水电站2#水轮发电机组调速器故障分析与处理[J].广西水利水电,2012(05):64-65.
[14]付一丁,李穆,李丰攀,顾然.基于Volterra级数的水轮机调速器液压系统故障诊断[J].水力发电,2016(02):65-67.
[15]张东胜,杨云峰,曹维福.拉西瓦水电站700MW水轮机调速系统的研制[J].水力发电,2009(04):4.