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

doi:10.11930/j.issn.1004-9649.2014.11.1.3

Abstract

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

CLC Number:

TK223.5⁺2

LI Da-cai. The Analysis and Improvement of Steam-Driven Pump Multistage Water Sealing for 1 000-MW Ultra Supercritical Units[J]. Electric Power, 2014, 47(11): 1-4.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.11.1.3

https://www.electricpower.com.cn/EN/Y2014/V47/I11/1

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