1 000 MW机组汽泵密封水多级水封问题分析及治理

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。

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

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.