Calculation and analysis on hydrodynamic characteristics of an ultra-supercritical unit boiler with 1000MW broad regulation load

TENG Minhua; HU Qing; WAN Li; WU Jianbo; JIANG Huiqing; OUYANG Shijie; YANG Dong

doi:10.19666/j.rlfd.201809193

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Calculation and analysis on hydrodynamic characteristics of an ultra-supercritical unit boiler with 1000MW broad regulation load

更新时间：2025-09-28

- Calculation and analysis on hydrodynamic characteristics of an ultra-supercritical unit boiler with 1000MW broad regulation load
- Thermal Power Generation Vol. 48, Issue 4, Pages: 60-67(2019)
- 作者机构：
  
  1. 浙江浙能技术研究院有限公司
  2. 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：10.19666/j.rlfd.201809193
  CLC： TK223.3
- Published Online：01 April 2019，
  
  Published：2019
- 稿件说明：
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TENG Minhua, HU Qing, WAN Li, et al. Calculation and analysis on hydrodynamic characteristics of an ultra-supercritical unit boiler with 1000MW broad regulation load[J]. Thermal power generation, 2019, 48(4): 60-67.
DOI：

TENG Minhua, HU Qing, WAN Li, et al. Calculation and analysis on hydrodynamic characteristics of an ultra-supercritical unit boiler with 1000MW broad regulation load[J]. Thermal power generation, 2019, 48(4): 60-67. DOI： 10.19666/j.rlfd.201809193.

摘要

针对1000 MW高效宽负荷率超超临界机组锅炉结构特点

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。根据质量守恒方程、动量守恒方程、能量守恒方程

建立了超超临界垂直管圈锅炉水冷壁水动力计算模型。利用牛顿弦割法求解非线性模型得到了锅炉在BMCR负荷、75%THA负荷和30%THA负荷下的流量分配、炉膛出口汽温及水冷壁金属壁温分布情况。计算结果表明:各负荷下

壁温和鳍片温度在材料许可范围内

该采用垂直管圈的超超临界机组锅炉水冷壁在水动力方面安全可靠;30%THA负荷时水冷壁不会发生流动不稳定性。

Abstract

According to the structural character of an ultra-supercritical 1 000 MW unit boiler with high frequency and broad regulation load

the water system can be equivalent to a network system consisting of flow circuits

pressure grids and connecting tubes. On the basis of the mass conservation equation

momentum conservation equation and energy conservation equation

the hydrodynamic calculation model of water wall of the ultra-supercritical vertical tube coils boiler is established. By using the Newton's chord cutting method

the nonlinear model is solved

and the mass flux distribution

outlet vapor temperatures and metal temperatures at BMCR

75%THA and 30%THA load are obtained. The results show that

the temperature of the wall and fin is within the allowable range of materials and the water wall of the ultra-supercritical vertical tube coils boiler is safe and reliable in hydrodynamic aspect. The water wall will not flow instability at 30% THA load.

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