ADAPTABILITY OF THE WATER-WALL IN ONCE-THROUGH BOILER TO OFF-DESIGN CONDITION

YU Dezhong; CHEN Xuebing; WANG hongyu

doi:10.19666/j.rlfd.2006.05.007

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ADAPTABILITY OF THE WATER-WALL IN ONCE-THROUGH BOILER TO OFF-DESIGN CONDITION

更新时间：2025-09-28

- ADAPTABILITY OF THE WATER-WALL IN ONCE-THROUGH BOILER TO OFF-DESIGN CONDITION
- Thermal Power Generation Issue 5, Pages: 22-24(2006)
- 作者机构：
  
  1. 华能沁北发电有限责任公司
  2. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2006.05.007
  CLC： TK223.31
- Published：2006
- 稿件说明：
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YU Dezhong, CHEN Xuebing, WANG hongyu. ADAPTABILITY OF THE WATER-WALL IN ONCE-THROUGH BOILER TO OFF-DESIGN CONDITION[J]. Thermal power generation, 2006, (5): 22-24.
DOI：

YU Dezhong, CHEN Xuebing, WANG hongyu. ADAPTABILITY OF THE WATER-WALL IN ONCE-THROUGH BOILER TO OFF-DESIGN CONDITION[J]. Thermal power generation, 2006, (5): 22-24. DOI： 10.19666/j.rlfd.2006.05.007.

摘要

简述了直流锅炉水冷壁的型式及其特点。通过华能沁北发电公司国产超临界直流锅炉水冷壁不同工况金属壁温的偏差分析

认为垂直水冷壁出口温度偏差明显大于螺旋水冷壁出口温度偏差。采用下部螺旋水冷壁和上部垂直水冷壁的结构

可以较好地解决变工况下的传热恶化和垂直水冷壁流量分配不均的问题;水冷壁变工况运行良好

锅炉起动的经济性和安全性都达到了大容量直流锅炉的水平。

Abstract

The types and features of waterwall in oncethrough boilers have been briefly described.Through analysis of metalic wall temperature deviation under various conditions of the waterwall in the first home made supercritical oncethrough boiler of Huaneng Qinbei Power Generation Company

the results obtained are as follows: the outlet temperature deviation of vertical waterwall is obviously greater than that of spiral waterwall;adopting spiral waterwall in the lower part

and adopting vertical waterwall in the upper part

the problems of heat transfer deterioration and nonuniform distribution of the flowrate in vertical waterwall under offdesign condition can be comparatively well solved.The operation under offdesign condition is good

the economic behavior and reliability of boiler startup all to be reached a level of a largecapacity oncethrough boiler.

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