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低供油压下挤压油膜阻尼器空穴效应试验研究

陈亚龙 马会防 黄延忠 张广辉

陈亚龙, 马会防, 黄延忠, 等. 低供油压下挤压油膜阻尼器空穴效应试验研究[J]. 航空动力学报, 2024, 39(7):20220061 doi: 10.13224/j.cnki.jasp.20220061
引用本文: 陈亚龙, 马会防, 黄延忠, 等. 低供油压下挤压油膜阻尼器空穴效应试验研究[J]. 航空动力学报, 2024, 39(7):20220061 doi: 10.13224/j.cnki.jasp.20220061
CHEN Yalong, MA Huifang, HUANG Yanzhong, et al. Experimental study on the effect of cavitation of squeeze film damper under low oil supply pressure[J]. Journal of Aerospace Power, 2024, 39(7):20220061 doi: 10.13224/j.cnki.jasp.20220061
Citation: CHEN Yalong, MA Huifang, HUANG Yanzhong, et al. Experimental study on the effect of cavitation of squeeze film damper under low oil supply pressure[J]. Journal of Aerospace Power, 2024, 39(7):20220061 doi: 10.13224/j.cnki.jasp.20220061

低供油压下挤压油膜阻尼器空穴效应试验研究

doi: 10.13224/j.cnki.jasp.20220061
详细信息
    作者简介:

    陈亚龙(1985-),男,正高级工程师,硕士,主要从事航空发动机结构强度工作。E-mail:cylnpu@163.com

  • 中图分类号: V216.2+1;TK14

Experimental study on the effect of cavitation of squeeze film damper under low oil supply pressure

  • 摘要:

    挤压油膜阻尼器(squeeze film damper, SFD)正常工作时避免不了会出现油膜空穴,为了研究SFD长时间运行时转子基频振动变化以及SFD油膜空穴效应对SFD内外环金属表面空化侵蚀情况,基于全尺寸航空发动机高压转子试验台开展了低供油压力(0.02~0.05 MPa)下SFD空穴效应试验研究,考察SFD在临界转速处长时间运行时转子基频振动变化,以及长时间运行后油膜空穴对SFD内外表面形貌的影响,试验结果表明:长时间运行后SFD油膜空穴会对SFD内环表面产生侵蚀作用,形成水滴形、椭圆形以及形状不规则的凹坑群,证明了在临界转速附近考核SFD空穴效应是SFD低供油压力下安全运行必要的试验内容。

     

  • 图 1  试验装置示意图

    Figure 1.  Schematic of experimental rig

    图 2  SFD结构示意图

    Figure 2.  Diagram of SFD structure

    图 3  试验装置照片

    Figure 3.  Photos of experimental rig

    图 4  试验台俯视图(监测布置)

    Figure 4.  Top view of experimental rig (schematic of monitoring location)

    图 5  第1次试验结果

    Figure 5.  Results of first experiment

    图 6  第1轮第9次试验振动实测结果(定速运行5 h)

    Figure 6.  Measured vibration results of the 9th experiment of the first round (working on a constant speed for 5 h)

    图 7  第1轮运行16 h的4个通道试验结果

    Figure 7.  Results of experiment for four channels after the first round of operation for 16 h

    图 8  第2轮第2次试验振动实测结果(定速运行4 h)

    Figure 8.  Measured vibration results of the 2nd experiment of the second round (working on a constant speed for 4 h)

    图 9  第2轮运行16 h的4个通道试验结果

    Figure 9.  Results of experiment for four channels after the second round of operation for 16 h

    图 10  第1轮运行16 h前后测点试验结果

    Figure 10.  Experiment results of measuring points before and after the first round of operation for 16 h

    图 11  第2轮运行16 h前后测点试验结果

    Figure 11.  Experiment results of measuring points before and after the second round of operation for 16 h

    图 12  拍摄区域编号示意图

    Figure 12.  Schematic of photography area number

    图 13  区域编号9~10处的损伤图片

    Figure 13.  Damage picture at area No. 9—10

    图 14  区域编号12~13处的损伤图片

    Figure 14.  Damage picture at area No. 12—13

    图 15  区域编号18处的损伤图片

    Figure 15.  Damage picture at area No. 18

    图 16  区域编号27~28处的损伤图片

    Figure 16.  Damage picture at area No. 27—28

    图 17  区域编号29~30处的损伤图片

    Figure 17.  Damage picture at area No. 29—30

    图 18  区域编号34处的损伤图片

    Figure 18.  Damage picture at area No. 34

    表  1  工业相机详细参数

    Table  1.   Detailed parameters of industrial camera

    参数 数值及说明
    品牌 BASLER
    型号 acA2440-75 μm
    像素位深/位 12
    感光芯片供应商 Sony
    感光芯片 IMX250
    分辨率/106像素 5
    水平/垂直像素尺寸 3.45 μm×3.45 μm
    感光芯片尺寸 8.4 mm×7.1 mm
    下载: 导出CSV

    表  2  表面损伤情况汇总

    Table  2.   Summary of surface damage

    区域编号 对比组 运行
    16 h后
    运行
    32 h后
    最终凹坑
    深度/mm
    9~10 × 0.8
    12~13 × 0.2
    18 × 1
    27~28 × 0.1
    29~30 × × <0.1
    34 × × 0.2
    注:表中×代表无凹坑,√代表有凹坑。SFD外环经过对比发现油膜区域损伤不严重,第1轮试验后仅发现一处较为明显的凹坑,第2轮试验后没有新增凹坑,最终凹坑深度远远小于0.1 mm。
    下载: 导出CSV

    表  3  评估空气是否进入SFD所需必要参数

    Table  3.   Necessary parameters to evaluate whether air enters SFD

    参数 数值
    转子工作时的滑油流量$ {Q_{{\mathrm{oil}}}} $ 36 L/h(0.01 L/s)
    SFD直径D/mm 235
    油膜区长度L/mm 25
    转子涡动半径$ e $/mm 0.015~0.02
    转子工作转速$ \varOmega $/(r/min) 1891
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-02-10
  • 网络出版日期:  2024-02-19

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