自然循环汽化冷却系统水-水引射的行为

doi:10.12068/j.issn.1005-3026.2016.11.012

东北大学学报:自然科学版 ›› 2016, Vol. 37 ›› Issue (11): 1573-1577.DOI: 10.12068/j.issn.1005-3026.2016.11.012

自然循环汽化冷却系统水-水引射的行为

冯明杰，王恩刚，冯慧聪

(东北大学材料电磁过程研究教育部重点实验室，辽宁沈阳110819)

收稿日期:2015-04-29 修回日期:2015-04-29 出版日期:2016-11-15 发布日期:2016-11-18
通讯作者: 冯明杰
作者简介:冯明杰(1971-)，男，河南禹州人，东北大学副教授; 王恩刚(1962-)，男，辽宁沈阳人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(51171041).

Water-Water Ejecting Behavior in a Natural Circulation Evaporation Cooling System

FENG Ming-jie， WANG En-gang， FENG Hui-cong

Key Laboratory of National Education Ministry for Electromagnetic Processing of Materials， Ministry of Education， Northeastern University， Shenyang 110819， China.

Received:2015-04-29 Revised:2015-04-29 Online:2016-11-15 Published:2016-11-18
Contact: FENG Ming-jie
About author:-
Supported by:
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摘要/Abstract

摘要： 以Fluent 6.3为计算平台，采用数值模拟的方法对一种加热炉自然循环汽化冷却启动引射新技术——水-水引射的引射行为进行了系统研究，探讨了引射管管径、出入口直径比和喷射流量等参数对冷却回路循环流速和引射管附近冷却回路局部阻损系数的影响.研究结果表明，管内流场符合受限等温直流引射射流的一般规律.当引射管管径不变时，冷却回路中的循环流速随引射流量的增加而增大，随引射管出入口直径比的增大而减小；当引射流量及引射管出入口直径比不变时，冷却回路中的循环流速随着引射管管径的增大而减小.从引射效果和减小回路阻损的角度来看，缩口型引射管优于扩口型引射管.

关键词: 汽化冷却, 自然循环, 水-水引射, 循环流速, 阻力损失系数

Abstract: The ejecting behavior of a new ejecting technique， named water-water ejecting technique， which is used to start up the natural circulation evaporation cooling system for a reheating furnace is numerically simulated with Fluent 6.3 software.The influences of ejecting tube diameter， diameter ratio of outlet to inlet and ejecting flowrate on circulating velocity and local resistance loss coefficient of the evaporation cooling circuit nearby ejecting tube are studied. The results indicated that the flow characteristics of water in the cooling circuit follows the general law of confined isothermal jet ejecting. The circulating velocity increases with the increasing of ejecting flowrate， but it decreases with the increasing of diameter ratio of outlet to inlet when the ejecting tube diameter is constant. At the same time， the circulating velocity decreases with the increasing of ejecting tube diameter when the ejecting flowrate and diameter ratio of outlet to inlet are both constant. The performance of necking-type ejecting tube is better than that of flared-type considering the ejecting performance and resistance loss.

Key words: evaporated cooling, natural circulation, water-water-ejecting, circulating velocity, resistance loss coefficient

中图分类号:

冯明杰，王恩刚，冯慧聪. 自然循环汽化冷却系统水-水引射的行为[J]. 东北大学学报:自然科学版, 2016, 37(11): 1573-1577.

FENG Ming-jie， WANG En-gang， FENG Hui-cong. Water-Water Ejecting Behavior in a Natural Circulation Evaporation Cooling System[J]. Journal of Northeastern University Natural Science, 2016, 37(11): 1573-1577.

参考文献

[1]Han S H，Chang D，Huh C.Efficiency analysis of radiative slab heating in a walking beam-type reheating furnace［J］.Energy，2011，36(2):1265-1272.
[2]Han S H，Chang D.Optimum residence time analysis for a walking beam type reheating furnace［J］.International Journal of Heat Mass Transfer，2012，55(15):4079-4087.
[3]董芄，徐艳英，兰日华.自然循环锅炉水动力回路分析法［J］.哈尔滨工业大学学报，2007，39(3):462-466.(Dong Peng，Xu Yan-ying，Lan Ri-hua.Loop analysis method for the numerical calculation of hydrodynamic characteristic of boiler with natural circulation ［J］.Journal of Harbin Institute of Technology，2007，39(3):462-466.)
[4]Xu Y Y，Dong P，Zhai M.Hydrodynamic loop analysis method for hot water boiler with natural circulation ［J］.Proceedings of the CSEE，2010，30(5):66-70.
[5]Liu J F，Zhao X M，Zhang J S.Operation experience of a 116 MW circulating fluidized bed hot water boiler with water cooled square cyclone ［J］.Power Engineering，2004，24(5):618-619.
[6]郭九生，朱绪，李芳，等.一种热轧加热炉汽化冷却引射装置:中国，CN203249504U［P］.2013-10-23.(Guo Jiu-sheng，Zhu Xu，Li Fang，et al.An ejecting equipment for evaporated cooling system of reheating furnace:Chinese，CN203249504U［P］，2013-10-23)
[7]Launder B E，Spalding D E.The numerical computational of turbulent flow ［J］.Computer Method in Applied Mechanics and Engineering，1973(3):267-271.
[8]李应林，谭来仔，陈传宝.液液引射器性能的数值模拟与实验［J］.东南大学学报(自然科学版)，2014，44(2):289-294.(Li Ying-lin，Tan Lai-zai，Chen Chuan-bao.Numerical simulation and experimental investigation on performance of liquid-liquid ejector ［J］.Journal of Southeast University (Natural Science Edition)，2014，44(2):289-294.)
[9]He S，Li Y，Wang R Z.Progress of mathematical modeling on ejectors ［J］.Renewable and Sustainable Energy Reviews，2009，13(8):1760-1780.
[10]Sarkar J.Geometric parameter optimization of ejector expansion refrigeration cycle with natural refrigerants ［J］.International Journal of Energy Research，2010，34(1):84-94.(上接第1568页)
[6]Hernandez-Morales B，Mitchell A.Review of mathematical models of fluid flow，heat transfer，and mass transfer in electroslag remelting process［J］.Ironmaking and Steelmaking International，1999，26(6):423-438.
[7]Dong Y W，Jiang Z H，Li Z B.Mathematical model for electroslag remelting process［J］.Journal of Iron and Steel Research，International，2007，14(5):7-12.
[8]Kharicha A，Ludwig A，Wu M.3D simulation of melting during an industrial scale electro-slag remelting process［C］//Proceedings of the 2011 International Symposium on Liquid Metal Processing and Casting.Nancy，2011:41-48.
[9]Kojima Y，Kato M，Toyoda T，et al.Model study on the melting phenomena of consumable electrode in electroslag remelting process ［C］//Proceedings of the Fourth International Symposium on Electroslag Remelting Processes.Tokyo，1973:35-44.
[10]ElGammal T，von Hagen I，Mullenberg R.Role played by the electric current on metal droplet formation in the ESR-process［C］ //Proceedings of the Fourth International Symposium on Electroslag Remelting Processes.Tokyo，1973:45-54.
[11]Kharicha A，Ludwig A.Influence of imposed vertical current on the droplet formation during a melting process［C］//The Seventh International Conference on Multiphase Flow Tampa，2010:1-5.
[12]梁连科，杨怀.电渣重熔用渣的物理化学及其应用译文集［M］.沈阳:东北大学出版社，1989:120-131.(Liang Lian-ke，Yang Huai.Translation anthologies of physical chemistry and application of slag used in electroslag remelting process［M］.Shenyang:Northeastern University Press，1989:120-131.)
[13]王安国，张廷安，豆志河.电渣熔铸过程渣池电场温度场的 ANSYS有限元分析［J］.过程工程学报，2006，6(1):105-109.(Wang An-guo，Zhang Ting-an，Dou Zhi-he.ANSYS finite element analysis of the thermoelectric field of the slag basin for electro-slag casting course［J］.The Chinese Journal of Process Engineering，2006，6(1):105-109.)
[14]谢珍勇.填充比和熔速对H13钢电渣质量的影响［J］.2007，13(3):36-37.(Xie Zhen-yong.Effect of filling ratio and melting speed on quality of ESR ingot of H13 hot -work die steel［J］.Special Steel Technology，2007，13(3):36-37.)

自然循环汽化冷却系统水-水引射的行为

Water-Water Ejecting Behavior in a Natural Circulation Evaporation Cooling System

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