给水旁路调节下高压加热器的瞬态应力分析

王建华; 范佩佩; 石峰; 种道彤

doi:10.12096/j.2096-4528.pgt.19071

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给水旁路调节下高压加热器的瞬态应力分析

燃煤发电系统能源高效清洁利用 | 更新时间：2025-07-04

- 给水旁路调节下高压加热器的瞬态应力分析
- Transient Stress Analysis of High Pressure Heater During Feedwater Bypass Regulations
- 发电技术 2019年40卷第4期页码：329-338
- 作者机构：
  
  1.国网河南省电力公司电力科学研究院, 河南省郑州市 450002
  2.河南恩湃高科集团有限公司, 河南省郑州市 450002
  3.动力工程多相流国家重点实验室(西安交通大学), 陕西省西安市 710049
- 作者简介：
  
  [ "王建华(1980), 男, 硕士研究生, 高级工程师, 从事热力系统节能技术及经济性研究, 94660214@qq.com" ]
  种道彤(1978), 男, 教授, 博士生导师, 从事相变换热、流致振动和热力系统等方面的研究, 本文通信作者, dtchong@mail.xjtu.edu.cn
- 基金信息：
  
  国家重点研发计划项目(2017YFB0602101);陕西省创新能力支撑计划(2018TD-014)
- DOI：10.12096/j.2096-4528.pgt.19071
  中图分类号：
- 收稿：2019-05-06，
  
  纸质出版：2019-08-31
- 稿件说明：
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王建华, 范佩佩, 石峰, 等. 给水旁路调节下高压加热器的瞬态应力分析[J]. 发电技术, 2019,40(4):329-338.

Jianhua WANG, Peipei FAN, Feng SHI, et al. Transient Stress Analysis of High Pressure Heater During Feedwater Bypass Regulations[J]. Power Generation Technology, 2019, 40(4): 329-338.
王建华, 范佩佩, 石峰, 等. 给水旁路调节下高压加热器的瞬态应力分析[J]. 发电技术, 2019,40(4):329-338. DOI： 10.12096/j.2096-4528.pgt.19071.

Jianhua WANG, Peipei FAN, Feng SHI, et al. Transient Stress Analysis of High Pressure Heater During Feedwater Bypass Regulations[J]. Power Generation Technology, 2019, 40(4): 329-338. DOI： 10.12096/j.2096-4528.pgt.19071.

摘要

灵活运行下的设备安全性是燃煤电站深度调峰过程的重要问题，高压加热器作为大型高温承压换热设备，在机组灵活性调节中承担重要作用，同时也面临安全性问题。针对某660 MW超临界燃煤发电机组1号高压加热器，建立三维有限元模型，研究给水旁路调节过程下的瞬态温度场、热应力场、机械应力场、耦合应力场分布，并针对水室出口、蒸汽入口、管板上下侧4个关键区域进行应力变化规律的研究。结果表明，热、机械、耦合应力的波动幅度均随着给水旁路程度的增大而增大；热应力最大部位为蒸汽入口管处，机械应力和耦合应力最大部位分别对应管板下侧、管板上侧；管板上侧区域为高压加热器最危险部位，需重点关注和提前检修。

Abstract

The safety of equipment under flexible operation is an important issue in the deep peak shaving process of coal-fired power plants. As large-scale

high-temperature and pressure-bearing heat exchangers

high-pressure heaters play an important role in the flexibility regulation of the unit. However

safety problems are severe. Therefore

a three-dimensional finite element model was established for the No.1 high-pressure heater of a 660 MW supercritical coal-fired power plant

to assess the distributions of transient temperature fields

thermal stress fields

mechanical stress fields and coupling stress fields of the heater under different feedwater bypass regulations. Moreover

the stress variations were carried out in four key areas including water chamber outlet

steam inlet pipe

the upper side of the tube sheet and the lower side of the tube sheet. The results show that as the bypass degree increases

the fluctuation range of thermal stresses

mechanical stresses and coupling stresses increases. The maximum thermal stress locates at the steam inlet pipe

the maximum mechanical stress locates at the lower side of tube sheet and the maximum coupling stress corresponds to the upper side of tube sheet. The upper side of tube sheet is the most dangerous part of the high-pressure heater

which needs to be paid attention to and repaired in advance.

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references

陈昱萌.超超临界锅炉运行诊断及NO x 减排调整试验[J ] .广东电力, 2017, 30(5):21-24, 62.

李锦斌.超超临界1000MW机组锅炉干湿态转换技术研究[J].华电技术, 2018, 40(4):47-49, 79.

张天海, 于国强, 殳建军, 等.超超临界二次再热机组高压加热器系统控制策略研究[J].华电技术, 2019, 41(3):35-39.

汤可怡, 杨建明, 蔡喜冬.大型机组一次调频性能优化方法[J].发电设备, 2016(6):374-377.

Alam H S, Djunaedi I, Soetraprawata D.Fitness for service assessment of high pressure heater tube at coal fired power plant[J].Applied Mechanics and Materials, 2014, 664, :204-209.

Ananda Rao M, Sekhar Babu R, Pavan kumar M V.Stress corrosion cracking failure of a SS 316L high pressure heater tube[J].Engineering Failure Analysis, 2018, 90:14-22.

高俊, 张维, 刘忠, 等.核电站高压加热器水室隔板穿孔原因分析[J].腐蚀科学与防护技术, 2012, 24(3):239-244.

苑海冬, 李科群, 王宏光, 等.1000MW机组高压加热器系统的动态特性研究[J].动力工程学报, 2010, 30(2):143-146.

顾琼彦.百万等级核电机组高压加热器应力分析[D].上海: 上海交通大学, 2010. http://d.wanfangdata.com.cn/Thesis/D130031 .

龚建中.瞬态工况下高加管板与水室的热应力分析[J].电站辅机, 2013, 34(3):1-4, 8.

Zhao Y, Liu M, Wang C, et al.Increasing operational flexibility of supercritical coal-fired power plants by regulating thermal system configuration during transient processes[J].Applied Energy, 2018, 228:2375-2386.

Zhao Y, Fan P, Wang C, et al.Fatigue lifetime assessment on a high-pressure heater in supercritical coal-fired power plants during transient processes of operational flexibility regulation[J].Applied Thermal Engineering, 2019, 156:196-208.

季维英.管壳式换热器管板应力的三维有限元分析[D].南京: 南京理工大学, 2006. http://cdmd.cnki.com.cn/Article/CDMD-10288-2006182147.htm .

胡振东.1000 MW机组高压加热器配置分析[D].北京: 华北电力大学, 2013. http://cdmd.cnki.com.cn/Article/CDMD-10079-1013313814.htm .

张志刚.单列式U型管高压加热器有限元分析研究[D].上海: 上海交通大学, 2014. http://cdmd.cnki.com.cn/Article/CDMD-10248-1015805661.htm .

丁斐.基于CFD的核电蒸汽发生器热工水力特性数值模拟研究[D].广州: 华南理工大学, 2013. http://cdmd.cnki.com.cn/Article/CDMD-10561-1013319073.htm .

程宇, 张巨伟.基于ANSYS的管道外自然对流换热系数的确定[J].当代化工, 2015, 44(11):2720-2722.

李俊.超超临界机组高压加热器水室结构强度研究[D].成都: 西南交通大学, 2017. http://cdmd.cnki.com.cn/Article/CDMD-10613-1017137384.htm .

Zhao Y, Wang C, Liu M, et al.Improving operational flexibility by regulating extraction steam of high-pressure heaters on a 660MW supercritical coal-fired power plant:a dynamic simulation[J].Applied Energy, 2018, 212:1295-1309.

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