中国电力 ›› 2015, Vol. 48 ›› Issue (11): 7-12.DOI: 10.11930.2015.11.7

• 发电 • 上一篇    下一篇

西门子1 000 MW汽轮机快速冷却系统应用与分析

苏国强,王东辉,施俊   

  1. 华能国际电力股份有限公司玉环电厂,浙江 玉环 317604
  • 收稿日期:2015-09-14 出版日期:2015-11-18 发布日期:2015-11-18
  • 作者简介:苏国强(1981—),男,安徽黄山人,工程师,从事电厂集控运行及相关工作。E-mail: country007@163.com

The Application and Analysis of Fast Cooling System in Siemens 1 000-MW-Turbines

SU Guoqiang, WANG Donghui, SHI Jun   

  1. Huaneng Power International, Inc., Yuhuan Power Plant, Yuhuan 317604, China
  • Received:2015-09-14 Online:2015-11-18 Published:2015-11-18

摘要: 汽轮机打闸后需要盘车运行一段时间,如果盘车运行时间长将使检修工期延长,同时也会增加相关系统运行成本。为缩短检修工期,并兼顾节能降耗,在机组停运后一般均采用汽轮机快速冷却(简称“快冷”)方式来加速内部部件冷却速率,减少盘车运行时间。从汽轮机打闸到盘车停运,在自然冷却情况下,需要12~15天;采取快速冷却方式后,耗时一般少于5天,因此可至少提前1周停运盘车。根据西门子1 000 MW汽轮机典型快冷案例,对汽轮机快冷操作流程及过程中存在的问题进行阐述和分析,总结了具有一定参考价值的操作流程及控制手段。

关键词: 汽轮机, 快速冷却, 盘车, 1 000 MW机组

Abstract: Generally, some certain time of turning gear is needed after a steam turbine shutdown. However, long-time turning gear will definitely extend the overhaul period and increase the operating costs of the related oil system. For the purpose of shortening the repairing period and conserving energy, fast cooling is adopted to accelerate the cooling rate of the internal components and reduce the turning gear period after the turbo set outages. Under natural cooling conditions, it takes about 12 to 15 days from turbine tripping to turning gear being switched off; but when fast cooling is adopted, it takes less than 5 days, saving 7 days at least. Regarding the typical fast cooling cases of Siemens 1 000-MW steam turbine, this paper presents the fast cooling operating procedures and analyzes some existing problems, and finally summarizes the procedure and controls for reference.

Key words: steam turbine, fast cooling, turning gear, 1 000 MW unit

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