华电技术 ›› 2012, Vol. 34 ›› Issue (6): 58-59.

• 技术交流 • 上一篇    下一篇

真空泵未联动导致机组跳闸的原因分析及处理

魏胜娈   

  1. 华电四川发电有限公司攀枝花分公司,四川攀枝花617065
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-06-25

Reason analysis and treatment of unit lower vacuum trip caused by vacuum pump refusing to linked act

WEI Shengluan   

  1. Panzhihua Branch of Huadian Sichuan Power Generation Company Limited, Panzhihua 617065, China
  • Received:1900-01-01 Revised:1900-01-01 Published:2012-06-25

摘要: 华电四川发电有限公司攀枝花分公司 #11机组在倒厂用电过程中400VⅠB失电,运行真空泵B蝶阀未联关,备用真空泵A未联启,导致机组真空度低而跳闸。对故障原因进行了分析,判定导致机组真空度低而跳闸的主要原因是真空泵控制回路设计不合理,采取了一系列技术改造措施,有效提高了机组运行的可靠性及安全性。

关键词: 真空度, 真空泵, 控制回路, 技术改造

Abstract: In the switch over process of the service power supply in unit No.11of the Panzhihua Branch of Huadian Sichuan Power Generation Company Limited ,the voltage of 400V I B segment was failed, the butterfly valve of the operation vacuum pump B could not linked, and the standby vacuum pump A could not linked startup, which caused the lower vacuum tripping of the unit. The reasons of the faults were analyzed, and it was determined that the main reason of the unit lower vacuum tripping is irrational design of the control loop of vacuum pump. A series of technical improvement measures were adopted, and the operation reliability and safety of the unit were increased effectively.

Key words: vacuum, vacuum pump, control loop, technical reformation