Analysis of Steam Temperature Deviation at Vertical Water-wall Outlet of a 1 000 MW Double-tangential Circular Boiler and Design & Operation Countermeasures

ZHOU Yanjun; GUO Zerui; WEI Ziyu; YANG Dong; MAO Yupeng; WANG Yongjie

doi:10.19805/j.cnki.jcspe.2025.240391

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Analysis of Steam Temperature Deviation at Vertical Water-wall Outlet of a 1 000 MW Double-tangential Circular Boiler and Design & Operation Countermeasures

更新时间：2026-10-10

- Analysis of Steam Temperature Deviation at Vertical Water-wall Outlet of a 1 000 MW Double-tangential Circular Boiler and Design & Operation Countermeasures
- Chinese Journal of Power Engineering Vol. 45, Issue 8, Pages: 1162-1172(2025)
- 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,黑龙江,哈尔滨,150046
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240391
  CLC：
- Online First：12 August 2025，
  
  Published：2025
- 稿件说明：
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周妍君,郭泽瑞,卫子钰,杨冬,毛玉鹏,王永杰. 1 000 MW双切圆锅炉垂直水冷壁出口汽温偏差分析及设计运行对策动力工程学报, 2025, 45(8): 1162-1172 https://doi.

org/10.19805/j.cnki.jcspe.2025.240391
周妍君,郭泽瑞,卫子钰,杨冬,毛玉鹏,王永杰. 1 000 MW双切圆锅炉垂直水冷壁出口汽温偏差分析及设计运行对策动力工程学报, 2025, 45(8): 1162-1172 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240391.

org/10.19805/j.cnki.jcspe.2025.240391 DOI：

摘要

为改善1 000 MW超超临界双切圆锅炉在低负荷运行时垂直管圈水冷壁出口汽温偏差大的问题

将水冷壁等效为流动网络系统

建立了水动力计算数学模型。利用400 MW负荷下实验炉测量数据

多次反推迭代计算出炉内实际吸热偏差分布

并验证了该模型的精密性。经分析指出低负荷时干湿态转态不同步是造成出口汽温偏差的原因

并提出了相关运行对策;设计了2种节流圈调整方案

计算了节流圈调整后水动力特性并校核流动不稳定性。结果表明:2种调整方案下出口汽温均更加均匀

出口汽温偏差减小

且不会发生流动不稳定现象;采用节流圈调整方案二后

四面墙整体出口汽温更加均匀

该方案对四面墙出口汽温偏差的改善作用更好。

Abstract

To address the issue of large steam temperature deviation at the vertical water-wall outlet of a 1 000 MW ultra-supercritical double-tangential circular boiler under low load operation

the water wall was equivalent to a flow network system

and a mathematical model for hydrodynamic calculation was developed. Using the measurement data of the experimental furnace under 400 MW load

the actual heat absorption deviation distribution in the furnace was repeatedly back-calculated and iteratively calculated

and the precision of the model was validated. Through analysis

the asynchronous dry-wet state transition during low-load operation was revealed to be the cause of the outlet steam temperature deviation

and relevant operation countermeasures were proposed. Two throttle adjustment schemes were designed

hydrodynamic characteristics after throttle orifice adjustment were calculated

and the flow instability was checked. The results show that with the two adjustment schemes

the outlet steam temperature is more uniform

the outlet steam temperature deviation is reduced

and no flow instability occurs. After adopting the second throttle adjustment scheme

the overall outlet steam temperature of the four walls is more uniform

and the improvement effect on the outlet steam temperature deviation of the four walls is better.

关键词

Keywords

references

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