华电技术 ›› 2015, Vol. 37 ›› Issue (10): 38-39.

• 技术交流 • 上一篇    下一篇

某电厂小机进汽切换阀 频繁故障原因分析及处理

  

  1. 广东大唐国际潮州发电有限责任公司,广东 潮州 515723
  • 出版日期:2015-10-25

Frequent fault cause analysis and treatment for air intake switching valve of smallsize steam turbine in power plant

  1. Guangdong Datang International Chaozhou Power Generation Company Limited, Chaozhou 515723, China
  • Published:2015-10-25

摘要:

摘要:某电厂1000 MW机组小机高压进汽切换阀自2010年机组投运以来,经常发生自动开启 、关闭不到位、漏油着火等故障;通过对切换阀油动机进行相应升级改造,将油缸进油改为双控、改用可靠性更高的伺服阀等控制方式,有效解决了切换阀存在的问题。

关键词: 关键词:1000MW机组, 小机, 高压进汽, 切换阀, 油动机, 故障处理

Abstract:

Abstract:In a power plant,faults like valve automatically open,cutoff valve not in place,oil leak and fire always happen in high pressure air intake switching valves of small size steam turbine since the 1000 MW unit was put into operation in 2010.These problems are solved effectively through such control methods as the corresponding upgrade of switching valve servomotor,cylinder oil inlet changing into dual control,and switching to the higher reliable servo valve.

Key words: ">Keywords:">1">000 ">MW unit, small ">size steam turbine, high ">pressure air intake, switching valve, servomotor, fault treatment