烟气挡板流动特性的数值模拟

樊桦; 吴东垠

doi:10.7652/xjtuxb202102011

您当前的位置：

首页 >

文章列表页 >

烟气挡板流动特性的数值模拟

更新时间：2025-07-09

- 烟气挡板流动特性的数值模拟
- Numerical Simulation of the Flow Characteristics of a Flue Gas Damper
- 西安交通大学学报 2021年55卷第2期页码：93-99
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
  
  : 2020-07-30。作者简介: 樊桦(1996—),女,硕士生;吴东垠(通信作者),男,教授。基金项目: 国家重点研发计划重点专项资助项目(2016YFB0601403)
- DOI：10.7652/xjtuxb202102011
  中图分类号： TM621.2
- 网络首发：2021-02-10，
  
  纸质出版：2021
- 稿件说明：
移动端阅览
樊桦, 吴东垠. 烟气挡板流动特性的数值模拟[J]. 西安交通大学学报, 2021,55(2):93-99.

Numerical Simulation of the Flow Characteristics of a Flue Gas Damper[J]. 2021, 55(2): 93-99.
樊桦, 吴东垠. 烟气挡板流动特性的数值模拟[J]. 西安交通大学学报, 2021,55(2):93-99. DOI： 10.7652/xjtuxb202102011.

Numerical Simulation of the Flow Characteristics of a Flue Gas Damper[J]. 2021, 55(2): 93-99. DOI： 10.7652/xjtuxb202102011.

摘要

为了优化烟气挡板的工作开度区间以提高锅炉热效率和适应调峰的能力

在烟气速度为18 m/s的条件下

分别模拟了某烟气挡板在开度10°、20°、30°、40°、50°、60°、70°、80°和90°下的速度云图、压力云图、流阻系数和流量系数

并评价了烟气挡板的流动特性。研究结果表明:随着挡板开度的增大

下游烟气的速度场和压力场的均匀性逐渐变好

流阻系数先快速后缓慢地减小

而流量系数则先缓慢后快速地增加; 当挡板全开时

挡板的阻力小于100 Pa

流阻系数小于1.08; 在余热利用装置的引风机全压为1 000 Pa

挡板开度介于17°～80°范围内时

烟气流量随挡板开度的变化特性良好。综合考虑挡板的流阻系数特性

建议该挡板的常用工作开度区间为40°～80°。

Abstract

To optimize the working opening degree range of flue gas damper to improve boiler’s thermal efficiency and the ability to adapt to peak load regulation

the flow fields of a flue gas damper with opening degrees of 10°

20°

30°

40°

50°

60°

70°

80° and 90° are simulated under the condition that the flue gas velocity is 18 m/s. The flow characteristics of the flue gas damper is evaluated according to the flow resistance coefficients

flow coefficients

and the distributions of velocity and pressure of different opening degrees of the flue gas damper. The results show that the uniformity of velocity field and pressure field of downstream flue gas gradually becomes better with the increase of damper opening degree. Along with the increase of damper opening degree

the flow resistance coefficient first decreases rapidly and then decreases slowly and the flow coefficient first increases slowly and then increases rapidly. The resistance of the damper is less than 100 Pa and the flow resistance coefficient of the damper is less than 1.08 when the damper is fully opened. If the total pressure of induced draft fan in the waste heat utilization device is 1 000 Pa

the variation characteristics of flue gas flow is well with the damper opening degree when the damper opens in the range of 17°- 80°. Considering the flow resistance coefficient characteristics of the damper

it is suggested that its opening degree range in common operation is from 40° to 80°.

关键词

Keywords

references

王月明, 牟春华, 姚明宇, 等. 二次再热技术发展与应用现状 [J]. 热力发电, 2017, 46(8): 1-10.

WANG Yueming, MU Chunhua, YAO Mingyu, et al. Review of the development and application of double-reheat power generation technology [J]. Thermal Power Generation, 2017, 46(8): 1-10.

孙超. 电站锅炉烟气挡板汽温调节特性模拟研究 [D]. 北京: 华北电力大学, 2010: 1-5.

许威, 张剑, 范浩杰, 等. 基于响应面分析的660 MW灵活二次再热锅炉汽温特性研究 [J]. 热能动力工程, 2020, 35(2): 110-115.

XU Wei, ZHANG Jian, FAN Haojie, et al. Study on the steam temperature characteristic of a 660 MW flexible double-reheat boiler based on response surface analysis [J]. Journal of Engineering for Thermal Energy and Power, 2020, 35(2): 110-115.

李媛, 张慧兵, 戴野, 等. 安全阀阀腔流动特性分析及数值模拟 [J]. 哈尔滨理工大学学报, 2020, 25(1): 15-21.

LI Yuan, ZHANG Huibing, DAI Ye, et al. Flow characteristics analysis and numerical simulation in safety valve cavity [J]. Journal of Harbin University of Science and Technology, 2020, 25(1): 15-21.

卜焕先, 谭慧俊, 何小明, 等. 带支板轴对称弯曲管道的流动特性 [J]. 航空动力学报, 2016, 31(5): 1252-1259.

BU Huanxian, TAN Huijun, HE Xiaoming, et al. Flow field characteristics in an axisymmetric bend duct with struts [J]. Journal of Aerospace Power, 2016, 31(5): 1252-1259.

QIAN Jinyuan, WEI Lin, JIN Zhijiang, et al. CFD analysis on the dynamic flow characteristics of the pilot-control globe valve [J]. Energy Conversion and Management, 2014, 87: 220-226.

JIANG Linsong, LIU Hongsheng, SUO Shaoyi, et al. Pore-scale simulation of flow and turbulence characteristics in three-dimensional randomly packed beds [J]. Powder Technology, 2018, 338: 197-210.

李燕辉, 廖志芳, 蒋劲, 等. 大口径活塞套筒式调流调压阀流动特性分析 [J]. 水利学报, 2019, 50(4): 516-523.

LI Yanhui, LIAO Zhifang, JIANG Jin, et al. Flow characteristics analysis of large-diameter flow and pressure regulating valve with piston sleeve [J]. Journal of Hydraulic Engineering, 2019, 50(4): 516-523.

LISOWSKI E, FILO G. CFD analysis of the characteristics of a proportional flow control valve with an innovative opening shape [J]. Energy Conversion and Management, 2016, 123: 15-28.

WANG Haimin, ZHAO Yue, WANG Jianxing, et al. Numerical simulation of flow characteristics for a labyrinth passage in a pressure valve [J]. Journal of Hydrodynamics, 2016, 28(4): 629-636.

相晓伟, 毛靖儒, 孙弼, 等. 汽轮机调节阀全工况三维流场特性的数值模拟研究 [J]. 西安交通大学学报, 2006, 40(3): 289-293.

XIANG Xiaowei, MAO Jingru, SUN Bi, et al. Numerical investigation of flow characteristic of control valve of steam turbine in the entire range of operating mode [J]. Journal of Xi’an Jiaotong University, 2006, 40(3): 289-293.

CUI Baoling, LIN Zhe, ZHU Zuchao, et al. Influence of opening and closing process of ball valve on external performance and internal flow characteristics [J]. Experimental Thermal and Fluid Science, 2017, 80: 193-202.

KANG Yuan, SHEN Pingchen, CHANG Yeonpun, et al. Modified predictions of restriction coefficient and flow resistance for membrane-type restrictors in hydrostatic bearing by using regression [J]. Tribology International, 2007, 40(9): 1369-1380.

倪林森, 李一兴, 张鲲羽. 滑油压力控制阀流动特性分析 [J]. 舰船科学技术, 2019, 41(5): 105-109.

NI Linsen, LI Yixing, ZHANG Kunyu. Flow characteristics analysis of lubricating oil control valve [J]. Ship Science and Technology, 2019, 41(5): 105-109.

贺惠民, 张晓毅. AP1000核电汽轮机中调门内两相流动特性数值模拟 [J]. 汽轮机技术, 2017, 59(1): 43-45, 46.

HE Huimin, ZHANG Xiaoyi. Numerical simulation of two-phase flow characteristics of control valve in AP1000 nuclear power steam turbine [J]. Turbine Technology, 2017, 59(1): 43-45, 46.

廖志芳, 王荣辉, 谭会攀, 等. DN1000上盖式半球阀流场的数值仿真 [J]. 水电与新能源, 2019, 33(3): 16-19.

LIAO Zhifang, WANG Ronghui, TAN Huipan, et al. Numerical simulation of the flow field in DN1000 super-capped hemispherical valve [J]. Hydropower and New Energy, 2019, 33(3): 16-19.

孙晓, 谢知航. 止回阀流动特性与阀芯优化设计 [J]. 湖南工业大学学报, 2018, 32(6): 39-44.

SUN Xiao, XIE Zhihang. Flow characteristics of check valves and optimal design of valve cores [J]. Journal of Hunan University of Technology, 2018, 32(6): 39-44.

邓斌, 陶文铨. 管壳式换热器壳侧湍流流动的数值模拟及实验研究 [J]. 西安交通大学学报, 2003, 37(9): 889-893, 924.

DENG Bin, TAO Wenquan. Numerical simulation and experimental study on turbulent flow in shell side of shell-and-tube heat exchangers [J]. Journal of Xi’an Jiaotong University, 2003, 37(9): 889-893, 924.

WANG Chao, LI Guoxiu, SUN Zuoyu, et al. Effects of structure parameters on flow and cavitation characteristics within control valve of fuel injector for modern diesel engine [J]. Energy Conversion and Management, 2016, 124: 104-115.

WU Dazhuan, LI Shiyang, WU Peng. CFD simulation of flow-pressure characteristics of a pressure control valve for automotive fuel supply system [J]. Energy Conversion and Management, 2015, 101: 658-665.

马光飞, 季健康, 姚丹, 等. 阀体间隙对球阀性能和内部流场分布的影响 [J]. 排灌机械工程学报, 2019, 37(11): 960-966.

MA Guangfei, JI Jiankang, YAO Dan, et al. Effects of valve body clearance on valve performance and internal flow field distribution [J]. Journal of Drainage and Irrigation Machinery Engineering, 2019, 37(11): 960-966.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

某新型蒸汽脉冲式声频清灰装置的流场分析

液氢管路输运中静电积聚机理与电流密度分布特征研究

X射线辐照下聚酰亚胺材料空间电荷分布特性的数值模拟

异质裂隙内超临界CO2地热提取特性数值模拟研究

工质与叶轮传热对超临界二氧化碳向心透平气动性能与流动特性的作用机制