次级燃烧对轴向分级燃烧室燃烧特性影响的试验研究

doi:10.16183/j.cnki.jsjtu.2023.076

上海交通大学学报 ›› 2024, Vol. 58 ›› Issue (8): 1139-1147.doi: 10.16183/j.cnki.jsjtu.2023.076

• 机械与动力工程 • 下一篇

次级燃烧对轴向分级燃烧室燃烧特性影响的试验研究

隋永枫¹^,³, 张宇明¹^,³, 臧鹏¹^,³, 贾玉良³, 衡思江³, 傅燕妮³, 葛冰²()

1.浙江燃创透平机械有限公司,杭州 310022
2.上海交通大学机械与动力工程学院,上海 200240
3.杭州汽轮动力集团股份有限公司,杭州 310022

收稿日期:2023-03-06 修回日期:2023-04-17 接受日期:2023-05-18 出版日期:2024-08-28 发布日期:2024-08-27
通讯作者: 葛冰,副研究员,博士生导师,电话(Tel.):021-34206709;E-mail:Gebing@sjtu.edu.cn.
作者简介:隋永枫(1978-),教授级高级工程师,从事动力机械开发相关研究.
基金资助:
浙江省领雁攻关计划(2022C01117)

Experimental Study of Influence of Secondary Combustion on Combustion Characteristics of Axial Staged Combustor

SUI Yongfeng¹^,³, ZHANG Yuming¹^,³, ZANG Peng¹^,³, JIA Yuliang³, HENG Sijiang³, FU Yanni³, GE Bing²()

1. Zhejiang Rancon Turbine Machinery Co., Ltd., Hangzhou 310022, China
2. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
3. Hangzhou Steam Turbine Co., Ltd., Hangzhou 310022, China

Received:2023-03-06 Revised:2023-04-17 Accepted:2023-05-18 Online:2024-08-28 Published:2024-08-27

摘要/Abstract

摘要：

为了获得燃气轮机轴向分级燃烧室非预混燃烧模式下次级燃烧对排放和燃烧振荡特性的影响规律,探索燃料轴向分级条件下稳定低排放的升负荷方式,选用某型F级燃气轮机轴向分级燃烧室开展试验研究.试验结果表明:较低燃烧室出口温度下加入次级燃料会抑制CO的消耗,导致CO排放急剧增加;次级燃料的加入以及次级当量比的增高会导致NO_x排放降低,但负荷增加会削弱次级燃烧降低NO_x排放的能力.次级燃料的加入以及次级当量比的增高会抑制较低频带(75~90 Hz)内的燃烧振荡;当次级当量比高于阈值(0.19)时,次级燃料的加入才会对较高频带(175~210 Hz)内的燃烧振荡起到抑制效果.此外,综合考虑次级燃烧对排放和燃烧振荡影响规律,获得了轴向分级燃烧室在较高负荷区间(20%~50%负荷)内的低排放、稳定燃烧的运行范围和升负荷方式,为机组升负荷过程中的稳定低排放运行提供参考.

关键词: 轴向分级燃烧室, 非预混燃烧模式, 次级燃烧, 排放, 燃烧振荡

Abstract:

In order to obtain the influencing rule of secondary combustion on emissions and combustion oscillation characteristics of gas turbine axial staged combustor in non-premixed combustion mode and explore a load increasing mode with stable low emission, an axial staged combustor for F-class gas turbines is selected for experimental study. The results show that CO consumption is restrained and CO emission increases sharply when secondary fuel is added at a lower combustor outlet temperature. The addition of secondary fuel and the increase of secondary equivalence ratio lead to the reduction of NO_x emission, but the increase of load can weaken the ability of secondary fuel to reduce NO_x emission. The addition of secondary fuel and the increase of secondary equivalence ratio restrain the combustion oscillation in the low frequency band (75—90 Hz). When the secondary equivalence ratio is higher than a certain threshold (0.19), the addition of secondary fuel can restrain higher frequency(175—210 Hz) combustion oscillation. In addition, by comprehensively considering the influence of secondary combustion on emissions and combustion oscillation, the operating range and load increasing mode of low emissions and stable combustion of axial staged combustor in the higher load range (20%—50% load) are obtained, which provides a reference for stable low emission operation of the unit during load increasing.

Key words: axial staged combustor, non-premixed combustion mode, secondary combustion, emission, combustion oscillation

中图分类号:

TK471

隋永枫, 张宇明, 臧鹏, 贾玉良, 衡思江, 傅燕妮, 葛冰. 次级燃烧对轴向分级燃烧室燃烧特性影响的试验研究[J]. 上海交通大学学报, 2024, 58(8): 1139-1147.

SUI Yongfeng, ZHANG Yuming, ZANG Peng, JIA Yuliang, HENG Sijiang, FU Yanni, GE Bing. Experimental Study of Influence of Secondary Combustion on Combustion Characteristics of Axial Staged Combustor[J]. Journal of Shanghai Jiao Tong University, 2024, 58(8): 1139-1147.

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燃料分配方式	负荷/ %	T_out/ ℃	空气流量/ 设计点空气流量	头部当量比	Φ_s
值班、值班+次级	20	850	1.18	0.40~0.46	0~0.12
	30	940	1.15	0.41~0.50	0~0.19
	40	1 030	1.09	0.39~0.56	0~0.35
	50	1 100	1.04	0.53~0.58	0~0.10

次级燃烧对轴向分级燃烧室燃烧特性影响的试验研究

Experimental Study of Influence of Secondary Combustion on Combustion Characteristics of Axial Staged Combustor

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