| 齿间浅槽结构对直通篦齿封严特性影响的实验 |
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| 引用本文： | 纪国剑,吉洪湖,王政伟.齿间浅槽结构对直通篦齿封严特性影响的实验[J].航空动力学报,2011,26(3):558-562. |
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| 作者姓名： | 纪国剑 吉洪湖 王政伟 |
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| 作者单位： | 1. 常州大学机械与能源工程学院,常州,213016
2. 南京航空航天大学,能源与动力学院,南京,210016 |
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| 摘 要： | 在早期研究的结果上,提出了一种齿间浅槽结构的直通齿衬套,即在与篦齿齿腔正对的衬套上加工制成浅槽.这种齿间浅槽破坏了壁面射流附面层的轴向连续性,导致射流流经浅槽后向篦齿齿腔发生小角度偏转,这样能有效地降低直通篦齿的透气效应,进而降低泄漏量.实验结果表明,相比于传统的光滑衬套,浅槽泄漏系数显著降低,其中矩形浅槽下降15%,...
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| 关 键 词： | 直通篦齿 衬套 壁面射流 齿间浅槽 泄漏系数 |
| 收稿时间： | 2010/8/15 0:00:00 |
| 修稿时间： | 2010/11/30 0:00:00 |
Experiments of leakage effects of rub-grooves on straight-through labyrinth seals |
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| JI Guo-jian,JI Hong-hu and WANG Zheng-wei.Experiments of leakage effects of rub-grooves on straight-through labyrinth seals[J].Journal of Aerospace Power,2011,26(3):558-562. |
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| Authors: | JI Guo-jian JI Hong-hu and WANG Zheng-wei |
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| Institution: | JI Guo-jian1,JI Hong-hu2,WANG Zheng-wei1(1.College of Mechanical and Energy Engineering,Changzhou University,Changzhou 213016,China,2.College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China) |
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| Abstract: | Based on early studies,a straight-through labyrinth seal was developed,which has a bush with a rub-groove machined opposite the teeth cavity.The rub-groove manufactured on the smooth bush opposite to the tooth cavity destroys the continuity of the wall jet boundary layer,which lead to the jet flow change it direction and greatly improve sealing effect.The experimental studies show that it has a better sealing effect.The leakage coefficient of labyrinth seal with the rectangle rub-grooves is decreased 15% an... |
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| Keywords: | straight-through labyrinth bush wall jet rub-groove leakage coefficient |
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