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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

马平昌, 刘玥, 高飞, 等. 航空发动机腐蚀敏感性试验系统研制[J]. 航空动力学报, 2024, 39(10):20220835 doi: 10.13224/j.cnki.jasp.20220835
引用本文: 马平昌, 刘玥, 高飞, 等. 航空发动机腐蚀敏感性试验系统研制[J]. 航空动力学报, 2024, 39(10):20220835 doi: 10.13224/j.cnki.jasp.20220835
MA Pingchang, LIU Yue, GAO Fei, et al. Development of aero-engine corrosion sensitivity test system[J]. Journal of Aerospace Power, 2024, 39(10):20220835 doi: 10.13224/j.cnki.jasp.20220835
Citation: MA Pingchang, LIU Yue, GAO Fei, et al. Development of aero-engine corrosion sensitivity test system[J]. Journal of Aerospace Power, 2024, 39(10):20220835 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
详细信息
    作者简介:

    马平昌(1993-),男,高级工程师,硕士生,主要从事环境模拟技术及装备研究

  • 中图分类号: V216.8

Development of aero-engine corrosion sensitivity test system

  • 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,并介绍了系统关键设计要点,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为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%。

     

  • 图 1  系统架构

    Figure 1.  System architecture

    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

    图 3  大流量干蒸汽加湿器

    Figure 3.  Large flow dry steam humidifier

    图 4  盐雾发生及输送

    Figure 4.  Salt spray generation and transportation

    图 5  多孔注入混匀器结构示意图

    Figure 5.  Structure diagram of multi-points injection mixer

    图 6  取样装置组成及原理

    Figure 6.  Composition and principle of sampling device

    图 7  取样器结构

    Figure 7.  Sampler structure

    图 8  供气流量控制特性

    Figure 8.  Flow control of the supplied airflow

    图 9  供气温度控制特性

    Figure 9.  Temperature control of the supplied airflow

    图 10  供气湿度控制特性

    Figure 10.  Humidity control of the supplied airflow

    图 11  动态盐雾取样结果

    Figure 11.  Dynamic salt spray sampling results

    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

    图 13  截面粒子分布

    Figure 13.  Particle distribution in section

    表  1  混合域可分离卷积与深度可分离卷积参数

    Table  1.   Mixed-domain separable convolution and depth-separable convolution parameters

    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
    发动机运行 运转 200±40 ≥10 ≥73 3
    大气贮存 不运转 0 大气 大气 2
    动态盐雾贮存 不运转 200±40 ≥10 ≥73 7
    湿热贮存 不运转 0 43±5 ≥90 12
    下载: 导出CSV

    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 切换附加时间/min
    本文试验系统 SL-3试验平台
    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
    下载: 导出CSV
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  • 收稿日期:  2022-11-02
  • 网络出版日期:  2024-05-11

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