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A compressor bleed valve assembly 28 having an axially translatable valve ring 66 for a gas turbine engine 10 is disclosed. Various construction details which increase the sealing effectiveness of a valve ring 66 are developed. In one embodiment, the valve ring is adapted to engage a slot 56 as the

A compressor bleed valve assembly 28 having an axially translatable valve ring 66 for a gas turbine engine 10 is disclosed. Various construction details which increase the sealing effectiveness of a valve ring 66 are developed. In one embodiment, the valve ring is adapted to engage a slot 56 as the valve ring is moved between the open to the closed position, the slot being contoured to provide a mechanical advantage as the valve ring moves to the closed position against resilient sealing members 58, 60 which axially engage the valve ring.

대표청구항 ▼

A stator assembly for an axial flow rotary machine having an axis, and annular flowpath for working medium gases extending about the axis, the machine having an axial direction and a circumferential direction with respect to the axis, which comprises: an orifice ring which extends circumferentially

A stator assembly for an axial flow rotary machine having an axis, and annular flowpath for working medium gases extending about the axis, the machine having an axial direction and a circumferential direction with respect to the axis, which comprises: an orifice ring which extends circumferentially with respect to the working medium flowpath and which has a plurality of passages extending therethrough in flow communication with the working medium flowpath; a valve which includes a valve ring concentrically disposed with respect to the orifice ring which is movable to an open position and to a closed position, the valve ring having a pair of sealing surfaces spaced axially one from the other and having an inwardly facing surface extending between the sealing surfaces; a pair of deformable resilient, sealing members extending circumferentially with respect to the valve ring and the orifice ring, the sealing members defining a seal region into which the passages extend; and, means for urging the valve ring in the circumferential and axial direction to move the valve ring from the open position to the closed position; wherein the valve ring is adapted to urge the seal members axially against the orifice ring to form a seal which blocks the flow of working medium gases through said passages; wherein the stator assembly further includes a plurality of slots disposed about the stator assembly, each slot extending an amount in the circumferential direction for a given amount of axial distance, the circumferential amount for a given distance having one magnitude over one portion of the slot and a different magnitude over another portion of the slot; and, wherein the valve ring engages each slot such that motion of the valve ring is guided by the slots and the slots are contoured such that the amount of circumferential travel of the valve ring for a given amount of axial travel increases as the valve ring moves to the closed position.