• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>ASME(American Society of Mechanical Engineers) Turbo Expo vol.3; 20070514-17; Montreal(CA) >ON LINE COMPRESSOR WASHING ON LARGE FRAME 9-FAGAS TURBINES EROSION ON RO COMPRESSOR BLADE LEADING EDGE FIELD PERFORMANCE WITH A NOVEL ON LINE WASH SYSTEM
【24h】

ON LINE COMPRESSOR WASHING ON LARGE FRAME 9-FAGAS TURBINES EROSION ON RO COMPRESSOR BLADE LEADING EDGE FIELD PERFORMANCE WITH A NOVEL ON LINE WASH SYSTEM

机译：在线压缩机在大框架9-FAGA涡轮机上的在线清洗对RO压缩机叶片领先的边缘场性能的侵蚀

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

On line compressor washing is an established practice amid gas turbine operators. Among these operators is the Netherlands Division of Electrabel who is operating at Eemshaven 5 x GE Frame 9-FA units since 1995. The plant operator used to perform routinely a daily on line wash and a single off line wash every year at shut down of the units for the annual inspection or maintenance outage. The on line water wash (OLWW) systems installed on these 5 engines are of the Turbotect Mkl nozzle design and were originally procured and supplied by the OEM. To our knowledge, all other manufactured gas turbines in the 7/9-FA fleet are equipped with the OEMs' own engineered OLWW nozzle systems.The OLWW regime of washing was reduced in June 2001 upon receipt of a recommendation by the OEM to inspect the first stages of the compressor for erosion marks. This recommendation was issued because some events have lead to investigation on erosion issues which materialized in the RO (first stage rotor) compressor blades in some engines of the 7/9-FA fleet operating with the OEM OLWW system and resulting from frequent compressor wash routine, and/or from water ingestion used in power augmentation. Likewise, during the same time, some gas turbines at Eemscentrale had undergone their first major overhaul which allowed the compressor first row blading to be examined for signs of erosion. It was found that only minor erosion at the RO blade leading edge had occurred over more than seven years of operation, during which period a daily on line wash had been performed. However, because of the erosion concerns among the 7/9-FA fleet and the OEM-recommended frequent inspections and measures to mitigate the rate of erosion due to droplet impingement, Electrabel investigated independently for a way of further reducing the erosion rate while maintaining on line washing over the lifetime of the gas turbine and improving the cleaning efficiency. To this effect, the OLWW system on unit EC-6 was upgraded in June 2004 with a new on line nozzle system specifically developed for use in large gas turbines. This paper presents the investigation results after some 24 months of operation and routine on line compressor washing. The Turbotect Mk3 OLWW nozzle system demonstrated and confirmed that it is contributing to mitigate the erosion risk on the RO compressor blade leading edge, and in turn to decrease the number of blending operations over the life time of the RO compressor blades. This nozzle designed for on line compressor cleaning of large gas turbines achieved a substantially improved cleaning effectiveness, respectively a lower rate in power degradation, by approx. 30 to 40% as compared to the current in use Mk1 OLWW nozzle system.
机译：在线压缩机清洗是燃气轮机操作者中已经建立的惯例。从1995年开始，Electrabel的荷兰分公司就一直在Eemshaven 5 x GE Frame 9-FA机组中运行。该工厂的运营商通常每天在设备关闭时进行日常在线清洗和每年一次离线清洗。年度检查或维护停机的单位。安装在这5台发动机上的在线水洗（OLWW）系统采用Turbotect Mkl喷嘴设计，最初是由OEM采购和提供的。据我们所知，7 / 9-FA机队中的所有其他制造的燃气轮机均配备了OEM自己设计的OLWW喷嘴系统.2001年6月，在OEM收到检查建议后，OLWW的清洗方式有所减少压缩机的第一阶段有腐蚀痕迹。发出此建议的原因是，某些事件导致了对腐蚀问题的调查，这些腐蚀问题是在使用OEM OLWW系统运行的7 / 9-FA机队的某些发动机的RO（第一级转子）压缩机叶片中出现的，并且是由于频繁进行压缩机清洗而导致的，和/或来自功率增加中的食水。同样，在同一时间，Eemscentrale的一些燃气轮机进行了首次大修，这使得可以检查压缩机第一排叶片的腐蚀迹象。发现在运行七年多的时间里，反渗透叶片前缘仅发生了轻微腐蚀，在此期间每天进行在线清洗。但是，由于7 / 9-FA机队之间存在腐蚀问题，并且OEM推荐经常检查和采取措施以减少由于液滴撞击而造成的腐蚀速率，因此Electrabel进行了独立研究，以寻求一种进一步降低腐蚀速率的方法，同时保持在燃气轮机的使用寿命内进行管线清洗，并提高了清洗效率。为此，2004年6月对EC-6单元上的OLWW系统进行了升级，专门为大型燃气轮机开发了新的在线喷嘴系统。本文介绍了经过24个月运行和常规压缩机清洗后的调查结果。 Turbotect Mk3 OLWW喷嘴系统证明并证实，它有助于减轻RO压缩机叶片前缘的腐蚀风险，进而减少RO压缩机叶片使用寿命内的混合操作次数。这种设计用于大型燃气轮机在线压缩机清洁的喷嘴，可显着提高清洁效率，功率降低率也分别降低了约5％。与当前使用的Mk1 OLWW喷嘴系统相比，降低了30％到40％。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号