| 摘要 |
A brush seal for turbo-engines is provided for sealing off spaces (R1, R2) subjected, in use, to different pressures at a peripheral gap, particularly between an engine stator (1,101) and an engine rotor (2,102), a mounting (3,103) on the engine stator (1,101) for a bundle of bristles (B), which extends from a mounting (3,103) between peripheral webs (4,5; 104, 105) so as to seal off the rotor (2,102) axially and form an axial gap in the peripheral direction with the web (5,105) facing the high-pressure side. The bundle of bristles (B) is provided with means for screening (6) or breaking up (107) turbulent flow initiated by the engine rotor (2,102), at least on the side facing the space (R1) of higher pressure (P1) at the seal. The means of screening may be having the bristles adjacent the high pressure side of a greater diameter than the other bristles, or a wire mesh may be adjacent the bristles on the high pressure side. The means for breaking up the turbulent flow may be a porous block or a block with passageways therein that may be horizontal or vertical.
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