航空发动机腐蚀敏感性试验系统研制

马平昌; 刘玥; 高飞; 芮鹏; 徐海博

doi:10.13224/j.cnki.jasp.20220835

航空发动机腐蚀敏感性试验系统研制

doi: 10.13224/j.cnki.jasp.20220835

1.
北京强度环境研究所，北京市 100076
2.
天津航天瑞莱科技有限公司北京分部，北京市 101102

详细信息

作者简介:
马平昌（1993-），男，工程师，主要从事环境模拟技术及装备研究

中图分类号: V216.8
计量
- 文章访问数: 15
- HTML浏览量: 14
- PDF量: 1
- 被引次数: 0
出版历程
- 收稿日期: 2023-02-22
- 网络出版日期: 2024-05-11

Development of aero-engine corrosion sensitivity test system

1.
Beijing Institute of Structure and Environment Engineering，Beijing 100076，China
2.
Tianjin Aerospace Reliability Technology Co，Ltd Beijing Branch，Beijing 101102，China

摘要

摘要:
针对航空发动机腐蚀敏感性试验需求，设计研制了基于新风进气、直通式布局形式的腐蚀敏感性试验系统，并介绍系统关键设计要点，包括供气量确定、大流量加湿、盐雾注入混匀一体化、动态盐雾含量检测等。为了验证关键技术设计的有效性，进行了系统性能测试，测试结果表明系统性能在腐蚀敏感性试验各阶段均满足标准要求，其中流量静态控制精度可达±1.6%，动态控制精度在±4.6%以内；静态温度控制精度可达±0.5 ℃，发动机运转过程实际温度与设定温度最大偏差2.2 ℃；试验中系统最大加湿量可达550 kg/h，在加湿度量最大的阶段湿度控制精度处于+3%/−5%以内，而在加湿量最小的阶段湿度控制精度可达±2%；供气盐雾含量处于200±18 ppb以内，盐雾粒径分布于0.3～10 μm之间，供气截面盐雾均匀性基本可达±10%。
- 腐蚀敏感性试验 /
- 供气量确定 /
- 大流量加湿 /
- 盐雾注入及均混 /
- 动态盐雾含量检测
Abstract:
In order to meet the requirements of corrosion sensitivity test for aero-engines, a corrosion sensitivity test system based on fresh air intake and straight through layout was designed and developed. The key design points of the system were introduced, including determination of air supply, design of large flow dry steam humidifiers, integrated design of salt spray injection and mixing, and design of dynamic salt spray sampling. In order to verify the effectiveness of the key technology design, the system performance test was carried out. The test results show that the system performance met the standard requirements at all stages of the corrosion sensitivity test. The static control accuracy of flow can reach ±1.6%, and the dynamic control accuracy was within ±4.6%. The static temperature control accuracy can reach ±0.5 ℃, and the maximum deviation between the actual temperature and the set temperature is 2.2 ℃ during engine operation. In the test, the maximum humidification capacity of the system can reach 550 kg/h, the humidity control accuracy is within +3%/−5% at the stage with the maximum humidification capacity, and the humidity control accuracy can reach ±2% at the stage with the minimum humidification capacity. The salt content of the gas supply is within 200±18 ppb. The simulated particle size distribution of salt spray is between 0.3 μm and 10 μm, and the distribution uniformity of salt spray is basically ±10% at different positions of the air supply duct section.
- corrosion sensitivity test /
- determination of air supply /
- large flow dry steam humidifiers /
- salt spray injection and mixing /
- dynamic salt spray content detection

HTML

图 1 系统架构

Figure 1. System architecture

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图 2 系统详细组成

1供气风机机组；2空气过滤装置；3风道式加热器；4大流量干蒸汽加湿器；5蒸汽电动控制阀门；6蒸汽发生器；7软水器；8供水装置；9主管路电动阀门；10主管路质量流量计；11盐雾发生装置；12盐雾混合装置；13等速取样器；14多级吸收瓶；15分光光度仪；16浮子流量计；17流量调节阀；18隔膜真空泵；19盐雾防护舱。

Figure 2. Detailed composition of the system

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图 3 大流量干蒸汽加湿器

Figure 3. Large flow dry steam humidifier

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图 4 盐雾发生及输送

Figure 4. Salt mist generation and transportation

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图 5 多孔注入混匀器结构示意图

Figure 5. Structure diagram of multi-points injection mixer

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图 6 取样装置组成及原理

Figure 6. Composition and principle of sampling device

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图 7 取样器结构

Figure 7. Sampler Structure

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图 8 供气流量控制特性

Figure 8. Flow Control of the Supplied Airflow

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图 9 供气温度控制特性

Figure 9. Temperature Control of the Supplied Airflow

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图 10 供气湿度控制特性

Figure 10. Humidity Control of the Supplied Airflow

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图 11 动态盐雾取样结果

Figure 11. Dynamic Salt Spray Sampling Results

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图 12 测试仪器及截面测试位置定义

Figure 12. Definition of test instrument and section test position

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图 13 截面粒子分布

Figure 13. Particle Distribution in Section

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表 1 混合域可分离卷积与深度可分离卷积参数表

Table 1. Mixed-domain separable convolution and depth-separable convolution parameter Tabs

阶段	试验状态	发动机状态	供气盐雾含量/ppb	供气温度/℃	供气湿度	试验时间/h
Ⅰ	发动机运行	运转	200±40	≥10	≥73%	3
Ⅱ	大气贮存	不运转	0	大气	大气	2
Ⅲ	动态盐雾贮存	不运转	200±40	≥10	≥73%	7
Ⅳ	湿热贮存	不运转	0	43±5	≥90%	12

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表 2 试验系统各阶段切换时间

Table 2. Switching time at each stage of the test system

阶段切换	本文试验系统	SL-3试验平台
阶段切换	切换附加时间/min
阶段Ⅰ-阶段Ⅱ	0	0
阶段Ⅱ-阶段Ⅲ	30	80
阶段Ⅲ-阶段Ⅳ	20	75
阶段Ⅳ-阶段Ⅰ	18	50

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