| 摘要 |
<p>The invention pertains to a method and apparatus for minimizing the leakage of working fluid through the fluid leakage path (L) of a turbine seal. The invention may be described in general terms as producing from rotary motion of the working fluid a region (58) of lowered pressure PL in the working fluid in a portion of the leakage path adjacent a high pressure P1 side of a sealing ring (50) of the seal. This function may be performed by producing and shedding vortices in the working fluid at one or more points about the circumference of the sealing ring (50). This function may be accomplished by providing a sealing ring having a tooth portion (54) provided in one or more tooth segments, portions of one or more trailing edges (56) of the tooth segments extending outward in a common direction.</p> |
