Hydrodynamic characteristic calculation for a 600MW unit once-through tower boiler

BI Yanshuang; WANG Shaofei; SHEN Yanrong; YANG Dong

English

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Hydrodynamic characteristic calculation for a 600MW unit once-through tower boiler

Thermal Power Generation Vol. 44, Issue 1, Pages: 25-29(2015)

更新时间：2025-09-28

- Hydrodynamic characteristic calculation for a 600MW unit once-through tower boiler
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK223.31
- Published：2015
- 稿件说明：
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BI Yanshuang, WANG Shaofei, SHEN Yanrong, et al. Hydrodynamic characteristic calculation for a 600MW unit once-through tower boiler[J]. Thermal Power Generation, 2015, 44(1): 25-29.
DOI：

BI Yanshuang, WANG Shaofei, SHEN Yanrong, et al. Hydrodynamic characteristic calculation for a 600MW unit once-through tower boiler[J]. Thermal Power Generation, 2015, 44(1): 25-29. DOI：

摘要

针对元宝山电厂亚临界600 MW机组塔式直流锅炉炉内结焦严重、"四管"泄漏频繁、过热器再热器超温、制粉系统出力不足等问题

对该机组锅炉水冷壁进行了优化改造。根据改造后的锅炉水冷壁结构特点及炉内热负荷分布特点

将水冷壁划分为由流量回路、压力节点和连接管组成的流动网络系统

根据质量守恒、动量守恒和能量守恒方程

建立了亚临界锅炉流量分配及出口汽温的计算模型。在此基础上对锅炉在不同工况时各回路流量分配及壁温分布进行了计算。结果表明

在TRL、75%TRL及30%TRL工况下

管内、外壁温度、壁厚中间点温度和鳍端温度均处于管子的允许温度范围之内

可以保证锅炉的安全运行。

Abstract

Such problems as serious salgging

frequent tube burst

superheater and reheater overtemperature and insufficient pulverizing system capacity occurred in the 600 MW unit once-through tower boiler in Yuanbaoshan Power Plant.Thus

the water wall of this boiler was optimized.According to the structural characteristics of the water wall and the heat load distribution features in the furnace after the transformation

the water wall was divided into the flow circuit

pressure point and flow network system comprised of connected tubes.On the basis of the mass conservation equation

momentum balance equation and energy conservation equation

the mathematic models for pressure drop and outlet steam temperature of water wall tube in subcritical boiler were established.Moreover

the total pressure drop in rising system and the outlet steam temperature of the upper and lower water wall were calculated

under conditions with different unit loads.The results show that

the temperature of the inner pipes

outer pipes

middle points and the rear fin are all reliable

which can ensure the boiler work safely.

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Related Author

ZHANG Shihong

LIU Zhengqiang

NIE Xin

YANG Dong

YUN Panfeng

MAO Kaiyuan

NIE Xin

XIE Haiyan

Related Institution

国家电投集团河南电力有限公司技术信息中心

国家电投集团河南电力有限公司平顶山发电分公司

西安交通大学动力工程多相流国家重点实验室

西安热工研究院有限公司

State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University

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