中国电力 ›› 2014, Vol. 47 ›› Issue (4): 52-55.DOI: 10.11930/j.issn.1004-9649.2014.4.52.3

• 发电 • 上一篇    下一篇

330 MW汽轮机轴位移偏移分析与处理

王文彬, 訾娟, 赵言, 贺强, 赵闫涛   

  1. 内蒙古国华准格尔发电有限责任公司,内蒙古 准格尔 010300
  • 收稿日期:2013-12-16 出版日期:2014-04-30 发布日期:2015-12-22
  • 作者简介:王文彬(1979-),男,内蒙古巴彦淖尔人,高级工程师,从事电厂热工自动化技术研究。E-mail: 080112@ghepc.com

Analysis and Processing on Shaft Displacement Migration in 330-MW Steam Turbines

WANG Wen-bing, ZI Juan, ZHAO Yan, HE Qiang, ZHAO Yan-tao   

  1. Inner Mongolia GuoHua Zhungeer Power Generation Co., Ltd., Zhungeer 010300, China
  • Received:2013-12-16 Online:2014-04-30 Published:2015-12-22

摘要: 汽轮机轴位移保护装置可以很好地反映推力轴承的工作状况。某电厂3号机组在供热改造后频繁出现轴位移逐步增大的现象,且出现轴位移变化与推力瓦瓦温变化相矛盾的现象。通过解体推力瓦,认真排查,发现由于推力瓦与推力盘扬度不一致,导致轴位移在机组运行中逐渐增大。检修时改进了推力瓦检修工艺并更换了热工测点。检修后轴位移恢复至出厂时的水平,机组保持稳定运行。

关键词: 汽轮机, 轴位移, 推力瓦, 扬度

Abstract: The steam turbine shaft displacement protection device can precisely reflect the working condition of thrust bearings. The gradual increasing axial displacement is observed frequently after the heating transformation was carried out in Turbine 3 of one power plant, and its variation is inconsistent with the temperature variation of thrust shoe. Through disassembling the thrust shoe and careful inspection, it is discovered that the thrust shoe is not in parallel with the thrust collar, which causes the increasing axial displacement during unit operation. Then the thrust tile repairing technology is modified and the thermal measurement points are adjusted. After such maintenance, the axial displacement is restored to the ex-factory value and the unit keeps running in a stable state.

Key words: steam turbine, shaft displacement, thrust shoe, raising-rate

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