Research on the Influence of Low NO<i><sub>x</sub></i> Combustor on Combustion Pressure Oscillation in 9E Gas Turbine

CAO Lianbo; WANG Kai; ZHANG Tao; LIU Zhitan; LI Yugang; YAN Zhiyuan

doi:10.19805/j.cnki.jcspe.2026.240710

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Research on the Influence of Low NO_x Combustor on Combustion Pressure Oscillation in 9E Gas Turbine

更新时间：2026-10-10

- Research on the Influence of Low NO_x Combustor on Combustion Pressure Oscillation in 9E Gas Turbine
- Chinese Journal of Power Engineering Vol. 46, Issue 4, Pages: 20-29(2026)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2026.240710
  CLC： TK472
- Published：2026
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曹炼博, 王凯, 张涛, 刘志坦, 李玉刚, 严志远. 9E燃气轮机低氮燃烧器燃烧压力脉动影响研究[J]. 动力工程学报, 2026, 46(4): 20-29.
曹炼博, 王凯, 张涛, 刘志坦, 李玉刚, 严志远. 9E燃气轮机低氮燃烧器燃烧压力脉动影响研究[J]. 动力工程学报, 2026, 46(4): 20-29. DOI： 10.19805/j.cnki.jcspe.2026.240710.

DOI： 10.19805/j.cnki.jcspe.2026.240710

摘要

9E燃气轮机主要在初级模式、贫贫模式和预混模式3种燃烧模式下运行

采用便携式设备开展燃烧状态监测

获取全工况下的燃烧压力脉动数据

并结合燃气轮机本体参数和排放指标进行了燃烧状态规律性研究。结果表明:9E燃气轮机启动至满负荷过程中

压力脉动共有4个突变点

分别对应点火时刻、并网时刻、燃烧温度基准达898.9 ℃时刻和燃烧温度基准达1 077.2 ℃时刻;燃气轮机燃烧压力脉动峰值会随负荷的增加而产生偏移;在初级模式下

燃烧压力振荡以贫燃熄火振荡和冷振荡为主;在贫贫模式下

燃烧压力振荡以热振荡为主;燃气轮机逐步进入预混稳定模式后

热振荡略有下降

但是冷振荡升高;当进气温度升高后

初级模式下

贫燃熄火振荡显著增加

冷振荡略有下降

热振荡无明显变化

而贫贫模式下

热振荡显著下降

冷振荡和贫燃熄火振荡升高

预混模式下

热振荡略有增加

冷振荡略有下降

贫燃熄火振荡明显下降。

Abstract

9E gas turbine mainly operates in three combustion modes: primary mode

lean-lean mode and premixed mode. Portable equipment was used to monitor the combustion status and obtain the combustion pressure oscillation data under the whole working condition. Study on the patterns of combustion status was conducted by combining this data with the operational parameters and emission indicators of gas turbine. Results show that there are four abrupt change points in pressure oscillation during the process from startup to full load

corresponding respectively to the ignition moment

the grid connection moment

the moment when the combustion temperature reference reaches 898.9 ℃

and the moment when it reaches 1 077.2 ℃. The peak value of the gas turbine combustion pressure oscillation shifts as the load increases. In primary mode

the combustion pressure oscillations are dominated by lean blow out and cold tone; in lean-lean mode

they are dominated by hot tone. As the gas turbine gradually enters the stable premixed mode

hot tone decreases slightly

while cold tone increases. When the inlet air temperature rises: in primary mode

lean blow out increases significantly

cold tone decreases slightly

and hot tone shows no significant change;in lean-lean mode

hot tone decreases significantly

while cold tone and lean blow out increase; in premixed mode

hot tone increases slightly

cold tone decreases slightly

and lean blow out decreases significantly.

关键词

Keywords

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Research on the Influence of Low NOx Combustor on Combustion Pressure Oscillation in 9E Gas Turbine

DOI：10.19805/j.cnki.jcspe.2026.240710

摘要

Abstract

关键词

Keywords

references

Research on the Influence of Low NO_x Combustor on Combustion Pressure Oscillation in 9E Gas Turbine