Computational analysis on hydrodynamic characteristics and flow instability of an ultra supercritical 1 000 MW double-reheat unit boiler

MAO Kaiyuan; NIE Xin; XIE Haiyan; YANG Dong; WANG Fengjun; HUANG Ying

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Computational analysis on hydrodynamic characteristics and flow instability of an ultra supercritical 1 000 MW double-reheat unit boiler

Thermal Power Generation Issue 7, (2017)

更新时间：2025-09-28

- Computational analysis on hydrodynamic characteristics and flow instability of an ultra supercritical 1 000 MW double-reheat unit boiler
- 作者机构：
  
  1. 西安交通大学动力工程多相流国家重点实验室,陕西,西安,710049
  2. 哈尔滨锅炉厂有限责任公司高效清洁燃煤电站锅炉国家重点实验室,黑龙江,哈尔滨,150046
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK124
- Published Online：02 August 2017，
  
  Published：2017
- 稿件说明：
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MAO Kaiyuan, NIE Xin, XIE Haiyan, et al. Computational analysis on hydrodynamic characteristics and flow instability of an ultra supercritical 1 000 MW double-reheat unit boiler[J]. Thermal Power Generation, 2017, (7).
DOI：

MAO Kaiyuan, NIE Xin, XIE Haiyan, et al. Computational analysis on hydrodynamic characteristics and flow instability of an ultra supercritical 1 000 MW double-reheat unit boiler[J]. Thermal Power Generation, 2017, (7). DOI：

摘要

大唐雷州电厂超超临界1 000 MW二次再热机组锅炉为Π型布置。由于Π型锅炉汽水流程复杂，可能会存在流量分配不均的风险，导致水冷壁超温造成事故。在宽负荷运行和快速变负荷调峰过程中，由于给煤量的扰动，水冷壁易出现流动不稳定现象。本文采用流动网络系统方法计算了锅炉在BMCR负荷时的质量流速分配、工质汽温以及金属温度分布，并对30%THA负荷进行了流动不稳定性校核，并在此基础上，分析了水冷壁的优化设计及安全运行特性。计算结果表明，水冷壁能避免管间应力过大和拉裂，在施加热负荷扰动后流量均能恢复稳定，锅炉水冷壁运行是安全可靠的。

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