Abstract: A turbine shroud assembly includes an expansion control ring to support segmented rotor shrouds. The expansion control ring is restrained by adjacent manifold rings, yet free to thermally expand radially outwardly without loss of axial alignment with the associated turbine wheel. The ported manifold rings are positioned on either side of an outwardly extending leg of the expansion control ring to direct cooling fluid delivered thereto toward the expansion control ring. A spacer ring surrounds the expansion control ring and restrains the expansion control ring relative to the manifold rings. The spacer ring maintains axial alignment of the expansion control ring with the turbine wheel. Cooling fluid is exhausted into the main hot gas stream, both upstream and downstream of the turbine wheel thus substantially preventing hot gases from affecting the expansion control ring.

Abstract: The invention is concerned with an improvement in a movable vane assembly of the type used in a gas turbine engine or compressor for interaction with a gas stream comprising a plurality of radially aligned vanes, generally of an air foil configuration, circumferentially arranged within an annular passage formed by a housing, said vanes being supported for rotation about their radial axis to vary the effective cross-sectional area of said annular passage, a plurality of rotatable gear means connected for rotation with said aligned vanes and a ring gear having teeth means adapted for simultaneous engagement with the teeth means of said rotatable gear means such that rotation of said ring gear causes rotation of said vanes. In one sense the improvement comprises a support for the ring gear supportingly connected to the first housing inwardly radially and coaxial with the ring gear, the support comprising an annular ring having longitudinally extending slot means therein.

Abstract: A turbine shaft and bearing assembly for a gas turbine is positionable as a unit in a turbine housing while providing means for lubrication of the associated bearings and means for communicating cooling fluid to the associated turbine wheel. The turbine shaft and bearing assembly which is the subject of this invention is applicable in one embodiment to a gasifier turbine housing or in another embodiment to a power turbine housing.

Abstract: A cooling system for a gas turbine engine having a gasifier turbine and a power turbine each interconnected by a turbine casing utilizes compressed cooling air communicated to axial cavities in the ends of the respective turbine shafts. This compressed air is directed outwardly between a flange integrally formed with the turbine shaft and the turbine wheel for communication to the turbine blades. In the gasifier turbine the cooling air passes through longitudinal passages formed in each blade, while in the power turbine the cooling air is discharged adjacent the blade root. Wheel flanges affixed on either side of the turbine wheel serve to retain the blades axially on the wheel. Compressed cooling air is also communicated to the nozzle vanes of the gasifier turbine wherein internal passages communicate the air into the main gas stream. Certain nozzle vanes are equipped with passage means to communicate air to an annular chamber surrounding the gasifier turbine.

Abstract: A speed sensor mounting assembly for a gas turbine speed sensor insures a magnetic speed sensing device is positioned a predetermined distance from a toothed wheel mounted on the output shaft of the gas turbine. The magnetic speed sensing device, which may be of conventional manufacture, is affixed in a fitting located at one end of a flexible conduit which extends outwardly from the vicinity of the shaft to an access port in the engine casing. The use of the flexible conduit allows remote rotation of the fitting and sensing device to threadably engage the fitting with a socket affixed to the engine adjacent the output shaft. Electrical conductor leads are contained in the flexible conduit for interconnection of the sensing device and appropriate electronic circuitry.