Calculation and Analysis on the Flow Instability of an Ultra Supercritical Boiler under Low Load

doi:10.7652/xjtuxb201907013

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Calculation and Analysis on the Flow Instability of an Ultra Supercritical Boiler under Low Load

更新时间：2025-07-09

- Calculation and Analysis on the Flow Instability of an Ultra Supercritical Boiler under Low Load
- Vol. 53, Issue 7, Pages: 84-91(2019)
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201907013
  CLC： U462.3
- Online First：10 July 2019，
  
  Published：2019
- 稿件说明：
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Calculation and Analysis on the Flow Instability of an Ultra Supercritical Boiler under Low Load[J]. 2019, 53(7): 84-91.
DOI：

Calculation and Analysis on the Flow Instability of an Ultra Supercritical Boiler under Low Load[J]. 2019, 53(7): 84-91. DOI： 10.7652/xjtuxb201907013.

摘要

为了研究超超临界锅炉水冷壁在低负荷运行工况下的流动不稳定性

采用一维单通道模型

建立了适用于不同几何结构、热工参数的超超临界锅炉的流动不稳定性通用数值计算模型。在试验验证结果符合良好的基础上

对沁阳发电分公司1 000 MW超超临界锅炉水冷壁系统低负荷(40%额定出力负荷)运行的部分典型回路进行了数值计算

对比分析了动态流动不稳定发生时

热负荷线密度对进出口流量振幅及其稳定时间的影响。结果表明:对前墙的最短管9回路、左侧墙最长管32回路及上炉膛受热最强管107回路

随着热负荷扰动强度的增加

进出口流量脉动的振幅也逐渐增加; 9、32、107各回路线密度分别为3.389、3.520、3.172 kW/m

热负荷线密度越大

对应典型回路进出口流量达到稳定所需的时间越长

脉动振幅越大

回路流动状态越不稳定。该结果可为超超临界锅炉的设计及低负荷安全运行提供指导

具有一定的可靠性及工程应用价值。

Abstract

To study the flow instability of an ultra-supercritical boiler under low load operation

this study established a one-dimensional single-channel model

and a general numerical model for the flow instability analysis of the ultra-supercritical boiler with different geometric structures and thermal parameters was established.Based on the good agreement between numerical and experimental results

the flow instability of water wall system of a 1 000 MW ultra-supercritical boiler in Qinyang Power Generation Company was numerically calculated(40% turbine heat acceptance).The influences of thermal line density on the import and export flow amplitude and time stability were analy-ed when the dynamic flow instability occurred in the circuit No.9 of the shortest tube on the front wall

the circuit No.32 of the longest tube on the left wall

and the circuit No.107 of the strongest heating tube in the upper furnace.The results showed that with the increase of the disturbance intensity of heat load

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references

舒印彪, 张智刚, 郭剑波, 等.新能源消纳关键因素分析及解决措施研究 [J].中国电机工程学报, 2017, 37(1): 1-9.

SHU Yinbiao, ZHANG Zhigang, GUO Jianbo, et al.Study on key factors and solution of renewable energy accommodation [J].Proceedings of the CSEE, 2017, 37(1): 1-7.

葛学利, 张忠孝, 范浩杰, 等.热偏差和流量偏差对1 000 MW超超临界锅炉水冷壁壁温影响的研究 [J].中国电机工程学报, 2018, 38(8): 2348-2357.

GE Xueli, ZHANG Zhongxiao, FAN Haojie, et al.Study on the effect of flame offset and flow deviation on wall water tube temperature of 1 000 MW ultra-supercritical boiler [J].Proceedings of the CSEE, 2018, 38(8): 2348-2357.

WANG Siyang, YANG Dong, ZHAO Yunjie, et al.Heat transfer characteristics of spiral water wall tube in a 1 000 MW ultra-supercritical boiler with wide operating load mode [J].Applied Thermal Engineering, 2018(130): 501-514.

曾俊, 李文军, 何洪浩, 等.超超临界压力锅炉垂直水冷壁壁温偏差试验研究 [J].湖南电力, 2017, 37(3): 56-58.

ZENG Jun, LI Wenjun, HE Honghao, et al.Experimental study on the temperature deviation of lower water wall in the ultra supercritical boiler [J].Hunan Electric Power, 2017, 37(3): 56-58.

ZHANG T J, WEN J T, PELES Y, et al.Two-phase refrigerant flow instability analysis and active control in transient electronics cooling systems [J].International Journal of Multiphase Flow, 2011, 37(1): 84-97.

丘加友.1 000 MW二次再热超超临界锅炉水动力及流动不稳定性计算分析 [J].锅炉技术, 2018(1): 1-5.

QIU Jiayou.Computational analysis on hydrodynamic characteristics and flow instability of a 1 000 MW ultra-supercritical tower type boiler with double reheat cycle [J].Boiler Technology, 2018(1): 1-5.

郭宇朦, 李会雄, 张庆, 等.倾斜上升光管上母线处超临界压力水传热关联式的建立 [J].西安交通大学学报, 2016, 50(1): 72-77.

GUO Yumeng, LI Huixiong, ZHANG Qing, et al.Establishment of heat transfer correlation for the supercritical water flow near the upper generating line of an inclined upward smooth tube [J].Journal of Xi’an Jiaotong University, 2016, 50(1): 72-77.

曲默丰, 梁梓宇, 赵云杰, 等.低质量流速光管内超超临界水传热特性的实验与数值模拟 [J].西安交通大学学报, 2018, 52(7): 52-59.

QU Mofeng, LIANG Ziyu, ZHAO Yunjie, et al.Experimental and numerical investigation on heat transfer characteristics of ultra-supercritical water in smooth tube with low mass flux [J].Journal of Xi’an Jiaotong University, 2018, 52(7): 52-59.

上海发电设备成套设计研究所.电站锅炉水动力计算方法: JBZ201-83[S].北京: 机械工业出版杜, 1983: 61-66.

CHATOORGOON V.Stability of supercritical fluid flow in a single-channel natural-convection loop [J].International Journal of Heat and Mass Transfer, 2001, 44(10): 1963-1972.

XIONG T, YAN X, HUANG S F, et al.Modeling and analysis of supercritical flow instability in parallel channels [J].International Journal of Heat and Mass Transfer, 2013, 57(2): 549-557.

陶文铨.数值传热学 [M].2版.西安: 西安交通大学出版社, 2011: 140-141.

杨冬, 黄开健, 朱晓静, 等.1 000 MW超超临界压力锅炉水冷壁水动力不稳定性试验研究 [R].西安: 西安交通大学动力工程多相流国家重点实验室, 2006.

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