700 MW高效超超临界CFB锅炉中部全隔墙振动安全性评估

吕卓; 鲁佳易; 邓启刚; 周旭; 邱彬彬; 董晨昊; 蹇开林; 程乐鸣

doi:10.19666/j.rlfd.202410262

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700 MW高效超超临界CFB锅炉中部全隔墙振动安全性评估

热力发电 2025年54卷第7期页码：54-62

“超超临界循环流化床发电技术”专题 | 更新时间：2026-08-11

- 700 MW高效超超临界CFB锅炉中部全隔墙振动安全性评估
- Vibration safety assessment for central full partition wall in a 700 MW high-efficiency ultra-supercritical CFB boiler
- 作者机构：
  
  1. 清洁燃烧与烟气净化四川省重点实验室
  2. 东方电气集团东方锅炉股份有限公司
  3. 重庆大学航空航天学院
  4. 浙江大学能源工程学院
- 作者简介：
- 基金信息：
  
  云南省科技计划项目(202403AA080020)~~
- DOI：10.19666/j.rlfd.202410262
  中图分类号： TM621.2
- 纸质出版：2025
- 稿件说明：
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[1]吕卓,鲁佳易,邓启刚,等.700 MW高效超超临界CFB锅炉中部全隔墙振动安全性评估[J],2025,54(07):54-62.
[1]吕卓,鲁佳易,邓启刚,等.700 MW高效超超临界CFB锅炉中部全隔墙振动安全性评估[J],2025,54(07):54-62. DOI： 10.19666/j.rlfd.202410262.

DOI：10.19666/j.rlfd.202410262.

摘要

为评估世界首台燃褐煤700 MW高效超超临界CFB锅炉中部全隔墙的振动安全性，建立了锅炉三维非定常流体动力学模型，模拟了炉膛内的气固流场分布，求解了炉内气固流动作用于中部全隔墙表面的压力分布及其波动规律。同时，实测了炉型结构相似的某超临界350 MW CFB锅炉炉墙的振动信号，并进行了频谱分析，以评估炉内压力波动频率。最后，以模拟计算和试验测试获取的炉内压力波动作为激励，计算了中部全隔墙在炉内波动压力作用下的动应力。结果表明，中部全隔墙的动应力水平低于材料的强度极限，中部全隔墙安全。

Abstract

In order to evaluate the vibration safety of the central full partition wall of the world's first lignite-fired 700 MW high-efficiency ultra-supercritical CFB boiler

a three-dimensional non-constant hydrodynamic model of the boiler is constructed

and the distribution of the gas-solid flow field within the furnace chamber is simulated. Furthermore

the pressure distribution and its fluctuation law of the gas-solid flow acting on the surface of the central full diaphragm wall within the furnace are solved. The vibration signals of the furnace wall of a supercritical 350 MW CFB boiler with a similar furnace structure are measured and analyzed spectrally to assess the frequency of pressure fluctuations in the furnace. The dynamic stress on the central diaphragm wall under fluctuating pressure in the furnace is calculated using the pressure fluctuations in the furnace obtained from simulation calculations and experimental tests as the excitation. The results demonstrate that the dynamic stress level of the central full diaphragm wall is below the permissible stress of the material

indicating that the central full diaphragm wall is safe.

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references

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