| 迷宫密封的理论与实验研究 |
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| 引用本文： | 朱毅征,何枫.迷宫密封的理论与实验研究[J].航空学报,1989,10(2):15-19. |
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| 作者姓名： | 朱毅征 何枫 |
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| 作者单位： | 北京化工学院
(朱毅征)，北京化工学院(何枫) |
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| 摘 要： | 根据相似原理。通过实验回归分析法,得出压力损失系数ζ与齿腔几何特性和流动特性的关系式。然后应用能量定律、连续方程、状态方程和Bernoulli方程与其联立,求解后可获得迷宫密封的全部特性。并可归纳成流量系数α、穿越系数β和迷宫函数ψ对全压比λ的特性曲线。应用这类曲线,可方便地计算出迷宫密封的泄漏率。
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| 关 键 词： | 密封装置 实验 设计 |
| 收稿时间： | 1989-12-16; |
ANALYSIS OF LEAKAGE CHARACTERISTICS OF LABYRINTH SEALS |
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| Beijing Institute of Chemical Technology Zhu Yizheng and He Feng.ANALYSIS OF LEAKAGE CHARACTERISTICS OF LABYRINTH SEALS[J].Acta Aeronautica et Astronautica Sinica,1989,10(2):15-19. |
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| Authors: | Beijing Institute of Chemical Technology Zhu Yizheng and He Feng |
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| Institution: | Beijing Institute of Chemical Technology Zhu Yizheng and He Feng |
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| Abstract: | This paper presents the leakage characteristics of labyrinth seals, which were introduced by theoretical analysis and experiment result.The study of the dissipative process converting the kinetic energy to the thermal energy within the labyrinth chambers is emphasized.Experiments were carried out using a model of a straight-through labyrinth. By changing the Reynold's number, pressure ratio, and the ratios of clearance and depth to the length of the chambers, the flow coefficient, carry-factor and ideal labyrinth function can be obtained.Additionally, by applying the continuity equation, energy equation, Bernouli's equation and the equation of state to the vortex chambers, a closed set of equations are obtained. Solving the equations simultanoasly and numerically, the velocity, pressure and temperature in each vortex-chamber can be determined completly. Finally, the leakage of the labyrinth seal are acquired. |
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| Keywords: | seal tests design |
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