| 摘要 |
According to the present invention, an aspirating face seal for use with a rotary machine comprises a rotating seal ring including a radially outer surface which includes an oblique portion. A stationary seal ring is coupled to approach the rotating seal ring such that a first gap is defined therebetween. The stationary seal ring is movable along a centerline axis of the rotary machine between an open position and a sealed position, and includes an extension member which extends across the first gap. An auxiliary seal includes at least one seal tooth which includes a seal tooth tip, and at least one seal tooth extends radially inwards from the extension member such that a second gap is defined between the seal tooth tip and the oblique portion. |
