中国电力 ›› 2014, Vol. 47 ›› Issue (11): 1-4.DOI: 10.11930/j.issn.1004-9649.2014.11.1.3

• 发电 •    下一篇

1 000 MW机组汽泵密封水多级水封问题分析及治理

李大才   

  1. 广东大唐国际潮州发电有限责任公司,广东 潮州 515723
  • 收稿日期:2014-07-20 出版日期:2014-11-18 发布日期:2015-12-08
  • 作者简介:李大才(1985—),男,江苏连云港人,工程师,从事火电机组运行技术管理工作。E-mail: lidacai@126.com

The Analysis and Improvement of Steam-Driven Pump Multistage Water Sealing for 1 000-MW Ultra Supercritical Units

LI Da-cai   

  1. Guangdong Datang International Chaozhou Power Generation Co., Ltd., Chaozhou 515723, China
  • Received:2014-07-20 Online:2014-11-18 Published:2015-12-08

摘要: 为减少1 000 MW超超临界机组汽泵多级水封发生的问题,诸如水中进油、油中进水、真空泄漏、频繁溢流等,在对汽泵及密封水和多级水封深入研究的基础上,提出了针对以上问题的控制措施,并通过系统和运行优化,使问题得到了解决,保证了机组长期安全、稳定和经济运行,其治理措施可为同类型机组提供借鉴。

关键词: 1 000 MW机组, 迷宫式密封, 汽泵密封水, 多级水封, 水中进油, 油中进水, 真空泄漏, 频繁溢流

Abstract: In order to reduce the faults of multistage water sealing in the steam-driven pump for 1 000-MW ultra supercritical units, such as lubrication oil seeping into the water feeding system, water leakage in the pump lubrication oil system, vacuum leakage and frequent overflow, etc., based on the study on steam-driven pump, sealing water and the further research on multistage water seal, the solutions to the faults are put forward, which will ensure the long-term secure, reliable and economic operation of the units. The solutions can also provide valuable references for the units of the similar type.

Key words: 1 000-MW unit, labyrinth seal, sealing water of steam-driven pump, multistage water seal, water leaking into oil, oil seeping into water, vacuum leakage, frequent overflow

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