燃气分析法测量小尺寸全环燃烧室出口温度场

资海林; 马瑛; 张阳; 李维; 张险

doi:10.13224/j.cnki.jasp.20220212

燃气分析法测量小尺寸全环燃烧室出口温度场

doi: 10.13224/j.cnki.jasp.20220212

中国航发湖南动力机械研究所，湖南株洲 412002

详细信息

作者简介:
资海林（1980-），男，高级工程师，硕士，主要从事航空发动机燃烧室测试方面的研究

中图分类号: V231.2
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- 文章访问数: 28
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- 被引次数: 0
出版历程
- 收稿日期: 2022-04-14
- 网络出版日期: 2024-01-25

Outlet temperature field measurement for small annular combustor by gas analysis

Hunan Aviation on Powerplant Research Institute，Aero Engine Corporation of China，Zhuzhou Hunan 412002，China

摘要

摘要:
为探索燃气分析法测量小尺寸全环燃烧室出口温度场的应用，介绍了适应小尺寸全环燃烧室出口通道高度的多点非混合式水冷燃气取样探针设计，燃烧室出口分别布置2 支5 点非混合式水冷燃气取样探针和双铂铑热电偶，随位移机构旋转180°，实现正、反双向数据采集，测量二氧化碳（CO₂）、一氧化碳（CO）和未燃碳氢化合物（UHC）3种组分的体积分数进而计算燃气温度。试验结果表明：燃气分析法与热电偶法测量的燃烧室出口温度分布基本一致，两者测量的相对偏差在2%以内；同时表明燃气分析法在测量航空发动机燃烧室温度场具有测温上限高、测量准确的优点。
- 出口温度场 /
- 小尺寸全环燃烧室 /
- 燃气分析 /
- 水冷燃气取样探针 /
- 位移机构 /
- 双向数据采集
Abstract:
In order to explore the applications of outlet temperature field measurement for a small annular combustor by gas analysis, the design of multipoint non-mixed water -cooled gas sampling probe was introduced for adaptation of a small annular combustor, two five-point non-mixed water -cooled gas sampling probes and double platinum rhodium thermocouple were fixed respectively on a displacement mechanism at the combustor outlet; swinging 180° with displacement mechanism, bidirectional data measurements were achieved; the gas temperature was calculated by measuring carbon dioxide (CO₂), carbon monoxide (CO) and unburned hydrocarbons (UHC). Test results showed that the combustor outlet temperature fields measured by gas analysis method and thermocouple method were consistent basically, the relative deviation of them was within 2%; at the same time, gas analysis method was proven to be dominant in measuring high gas temperature from aeroengine combustor with high upper limit of temperature measurement and high precision.
- outlet temperature field /
- small annular combustor /
- gas analysis /
- water-cooled gas sampling probe /
- displacement mechanism /
- bidirectional data measurement

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图 1 测温用燃气分析系统示意图

Figure 1. Schematic diagram of gas analysis system for temperature measurement

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图 2 拉瓦尔喷管结构形式取样孔示意图

Figure 2. Schematic diagram of laval nozzle structure sampling hole

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图 3 5点非混合式水冷燃气取样探针结构图

Figure 3. Structure diagram of 5-point non-mixed water-cooled gas sampling probe

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图 4 计算模型网格

Figure 4. Computational model grid

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图 5 取样孔内样气静温数值计算

Figure 5. Numerical calculation of static temperature of the sample gas in the sampling hole

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图 6 取样孔内样气静压数值计算

Figure 6. Numerical calculation of static pressure of the sample gas in the sampling hole

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图 7 取样孔内样气流速数值计算

Figure 7. Numerical calculation of velocity of the sample gas in the sampling hole

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图 8 水冷燃气取样探针的冷却水温度数值计算

Figure 8. Numerical calculation of cooling water temperature of water-cooled gas sampling probe

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图 9 水冷燃气取样探针的头部外壳壁温数值计算

Figure 9. Numerical calculation of head shell temperature of water-cooled gas sampling probe

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图 10 样气预处理系统示意图

Figure 10. Schematic diagram of sample pretreatment system

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图 11 试验段结构示意图

Figure 11. Schematic diagram of test section structure

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图 12 5点裸露气冷式双铂铑热电偶结构示意图

Figure 12. Schematic diagram of 5-point exposed air-cooled double platinum-rhodium thermocouple structure

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图 13 燃烧室出口截面测点分布示意图

Figure 13. Distribution diagram of measuring points at combustor outlet section

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图 14 位移机构工作方式图

Figure 14. Working mode diagramof displacement mechanism

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图 15 程序运行界面

Figure 15. Program running interface

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图 16 燃烧室出口温度场分布图（燃气分析法、状态1）

Figure 16. Combustor outlet temperature field （gas analysis, test state1）

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图 17 燃烧室出口温度场分布图（热电偶、状态1）

Figure 17. Combustor outlet temperature field （thermocouple, test state1）

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图 18 燃烧室出口温度场分布图（燃气分析法、状态2）

Figure 18. Combustor outlet temperature field （gas analysis, test state 2）

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图 19 燃烧室出口温度分布图（热电偶、状态2）

Figure 19. Combustor outlet temperature field （thermocouple, test state 2）

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表 1 气体分析仪测量范围及精度

Table 1. Measurement range and accuracy of gas analyzer

测量原理	测量参数	测量范围	精度/%
非分光红外分析法	CO/10⁻⁶	0～2500	±1.0
非分光红外分析法	CO₂/10⁻²	0～10	±1.0
非分光红外分析法	CO₂/10⁻²	0～10	±5.0
火焰离子检测法	UHC/10⁻⁶	10～100	±2.0
火焰离子检测法	UHC/10⁻⁶	100～5000	±1.0

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表 2 试验状态参数

Table 2. Test state parameters

试验状态	进口压力 p₃/kPa	进口温度 T₃/K	进口空气流量 W_a/（kg/s）	油气比 f
1	370	490	1.00	0.020
2	1500	710	3.65	0.024

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表 3 油气比对比

Table 3. Comparisons of fuel-air ratio

试验状态	流量法油气比	燃气分析法油气比	相对偏差/%
1	0.0200	0.0209	4.50
2	0.0240	0.0248	3.33

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表 4 测温结果对比

Table 4. Comparisons of temperature measurement results

试验状态	T_t4avg	T_t4avr	相对偏差/%
1	0.589	0.579	1.73
2	0.788	0.779	1.16
注：T_t4avg为燃气分析法测量的燃烧室出口平均温度；T_t4avr为双　铂铑热电偶测量的燃烧室出口平均温度。

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