1998-02-23

Leakage Characteristics of Brush Mounted Labyrinth Seal With Rotating Speed 980846

Leak and seal performances in stationary state and rotating state for each brush mounted labyrinth and ordinary labyrinth were studied and presented hereunder in this paper.
It was found in this research work that seal performance of brushmounted labyrinth is much better than that of ordinary labyrinth. Brush mounted labyrinth has two remarkable characteristics: In the case that the brush is positioned behind fin against flow, i.e. positioned downstream of fin, amount of leakage is suppressed as increasing of rotation speed. In the case that brush is positioned upstream of fin, leakage increases as increasing of rotation speed.

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