RP-3燃油最小点火能测量系统及火花放电特性

王立群; 李玉芳; 刘冠男; 付子祺; 台环宇; 白文涛

doi:10.13224/j.cnki.jasp.20240689

RP-3燃油最小点火能测量系统及火花放电特性

doi: 10.13224/j.cnki.jasp.20240689

1.
中国航空工业集团有限公司沈阳飞机设计研究所，沈阳 110035
2.
中国航空工业集团有限公司西安飞机工业集团股份有限公司，西安 710089
3.
西安交通大学化学工程与技术学院，西安 710049
4.
南京航空航天大学航空学院，南京 210016
5.
中航工业南京机电科技有限公司，南京 130012

基金项目: 飞行器环境控制与生命保障工业和信息化部重点实验室开放课题（KLAECLS-E-202305）

详细信息

作者简介:
王立群（1996-），男，助理工程师，硕士，主要从事航空燃油系统研究

通讯作者:
李玉芳（1973-），女，正高级工程师，硕士，主要从事航空燃油系统研究。E-mail：1639919891@qq.com

中图分类号: V228
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出版历程
- 收稿日期: 2024-10-10
- 网络出版日期: 2025-06-10

RP-3 fuel minimum ignition energy measuring system and spark discharge characteristics

WANG Liqun¹,
LI Yufang^{2,*
, ,},
LIU Guannan³,
FU Ziqi⁴,
TAI Huanyu⁴,
BAI Wentao⁵

1.
Shenyang Aircraft Design and Research Institute，Aviation Industry Corporation of China，Limited，Shenyang 110035，China
2.
Xi’ an Aircraft Industry Group Company Limited，Aviation Industry Corporation of China，Limited，Xi’an 710089，China
3.
College of Chemical Engineering and Technology，Xi’an Jiaotong University，Xi’an 710049，China
4.
College of Aerospace Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China
5.
Nanjing Electromechanical Technology Company，Limited，Aviation Industry Corporation of China，Limited，Nanjing 130012，China

摘要

摘要:
针对国产航空燃油RP-3最小点火能测定需要，基于RLC放电电路，设计了小能量火花放电系统，采用考虑电容能量残余及回路消耗能量方法研究了火花放电与充电电压及电容容量的关系，分析了不同能级电容放电火花电流、能耗及效率，并开展了RP-3燃油的最小点火能实验。结果表明：RLC电路适用于1 J以下的电火花发生系统，电容容值越大，储存能量越大，放电时间越长，火花放电效率越高，可达80%。不同温度的燃油蒸汽的最小点火能不同，两者之间存在“U”形曲线关系，在燃油蒸汽50 ℃、101 kPa下，最小点火能为0.167 mJ。
- 最小点火能 /
- RP-3燃油 /
- 火花放电 /
- 火花能量 /
- 点火电路
Abstract:
A small energy spark discharge system based on an RLC discharge circuit was designed for measuring the minimum ignition energy of domestic aviation fuel RP-3. The relationship between spark discharge and charging voltage, as well as capacitor capacity, was studied considering capacitor residual energy and circuit energy loss. The spark discharge current, energy consumption, and efficiency at different energy levels were analyzed, and minimum ignition energy tests for RP-3 fuel were conducted. The results showed that the RLC circuit is suitable for spark discharge systems below 1 J. The larger capacitor meant the greater stored energy, the longer discharge time, and the higher spark discharge efficiency, reaching up to 80%. The minimum ignition energy of fuel vapor varied with temperature, following a “U” shape curve. At 50 ℃ and 101 kPa, the minimum ignition energy was 0.167 mJ.
- minimum ignition energy /
- RP-3 fuel /
- spark discharge /
- spark energy /
- ignition circuit

HTML

图 1 RLC放电回路图

Figure 1. RLC discharge circuit diagram

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图 2 点火电路图

Figure 2. Ignition circuit diagram

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图 3 电路实物图

Figure 3. Physical diagram of the circuit

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图 4 电容容值与最小充电电压关系

Figure 4. Relationship between the capacitance value and the minimum charging voltage

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图 5 20 pF电容放电滤波图

Figure 5. 20 pF capacitance discharge filter diagram

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图 6 20 pF火花电流功率谱密度分布图

Figure 6. 20 pF spark current power spectral density distribution

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图 7 不同电容火花能量释放比例与时间关系

Figure 7. Relationship between discharge ratio and time of spark energy of different capacitances

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图 8 不同能量级别下各项能量占比图

Figure 8. Proportion of energy under different energy level

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图 9 火花放电效率箱线图

Figure 9. Spark discharge efficiency boxplot

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图 10 25 ℃无水乙醇MIE

Figure 10. MIE of anhydrous ethanol at 25 ℃

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图 11 RP-3燃油蒸气燃爆实验图

Figure 11. Real photograph of RP-3 fuel vapor explosion

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图 12 燃油蒸气温度与MIE

Figure 12. RP-3 fuel vapor temperature and MIE

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表 1 放电电路元器件参数表

Table 1. Discharge circuit equipment parameters

参数	数值	用途
直流电源/kV	3～15	提供的充电电压
负载电阻R₁/Ω	250	调节放电电流大小
电感/mH	1	调节放电电流大小
泄能电阻 R₂/kΩ	50	消耗电容残余能量
测流电阻R₃/Ω	20	检测放电电流大小
分压电阻R₄/MΩ	200	检测充电电压大小
分压电阻R₅/MΩ	1	检测充电电压大小
钨丝直径/mm	1	放电电极
真空高压继电器 S1、S2工作电压/kV	20	控制电路通断

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表 2 电容储能与放电时间、电流峰值关系

Table 2. Relationship between capacitor energy storage, discharge time and current peak value

电容容值 C/pF	放电时间 t/ns	电流峰值 I/A
2.5	300	5.31
10	400	16.68
71	700	19.88
1100	800	36.80
2200	1800	30.88

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表 3 火花能量及各项能量损耗

Table 3. Spark energy and various energy losses

V_s/kV	C/pF	E_c/mJ	E_s/mJ	E_r/mJ	E_cr/mJ
14	2.5	0.245	0.155	0.067	0.0223
12	10.0	0.720	0.377	0.308	0.0368
12	20.0	1.440	0.731	0.615	0.0937
12	39.0	2.810	1.600	1.041	0.1690
12	71.0	5.110	3.790	0.913	0.4070
9	1100.0	44.550	33.620	9.310	1.6200
9	2200.0	89.100	75.400	8.270	5.4300

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表 4 蒸气温度为50 ℃的点火能量

Table 4. Ignition energy at vapor temperature is 50 ℃

实验次数	燃油温度/℃	蒸气温度/℃	火花能量/mJ	燃油蒸气饱和体积分数/%
1	72	49.9	0.764	1.483
2	67	50.1	0.475	1.509
3	69	49.8	0.224	1.480
4	69	50.2	0.167	1.513
5	68	50.0	0.975	1.502

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