초록 ▼

A hollow thermally-conditioned turbine stator nozzle 12 is set forth to distribute and guide combustion gases from a forward inlet 15 to the turbine rotor blades 18. The nozzle includes a plurality of vanes 20 arranged annularly in the turbine. Each vane 20 has a body 22 to guide the fluid, the body

A hollow thermally-conditioned turbine stator nozzle 12 is set forth to distribute and guide combustion gases from a forward inlet 15 to the turbine rotor blades 18. The nozzle includes a plurality of vanes 20 arranged annularly in the turbine. Each vane 20 has a body 22 to guide the fluid, the body being supported by outer and inner ends 34,64. The outer and inner ends each have a forward lug 44,74 and a rear lug 46,76. A floating support is provided for the vanes and includes forward shoulders 110,136 to engage the forward lugs and prevent rearward movement of the vanes and rear shoulders 114,142 having notches 116,144 to receive and confine the tangential movement of the vanes. Each vane also includes a hollow core 152 to pass a portion of fluid and reduce thermal stresses on the vane. The vane is preferably made of silicon nitride ceramic.

대표청구항 ▼

A stator nozzle for guiding the fluid flow from a forward inlet to the blades of a turbine comprising: a plurality of vanes arranged annularly to define the stator nozzle, each vane having a body adapted to guide fluid flow and with a substantially radially extending axis, said body disposed between

A stator nozzle for guiding the fluid flow from a forward inlet to the blades of a turbine comprising: a plurality of vanes arranged annularly to define the stator nozzle, each vane having a body adapted to guide fluid flow and with a substantially radially extending axis, said body disposed between outer and inner ends, each vane having a hollow core extending radially therethrough; a forward lug disposed on and projecting outward from each of the outer and inner ends; a rear lug disposed on and projecting outward from each of the outer and inner ends to the rear of the forward lugs; a floating support for each vane in the turbine to permit each vane to adjust in its respective radial and tangential directions to evenly distribute loads to each forward and rear lug, the floating support including a pair of concentrically arranged annularly spaced forward shoulders, the forward shoulders spaced from the outer and inner ends and adapted to abut the forward lugs of each vane to prevent the vanes from moving rearwardly, and a pair of concentrically arranged, annularly spaced rear shoulders in the turbine, the rear shoulders having notches adapted to loosely receive the rear lugs of each vane to confine tangential movement thereof, the spaces between the forward and rear shoulders defining outer and inner chambers communicating with the vane core at the outer and inner ends of each vane, a portion of the fluid passing directly through the cores to minimize thermal stresses on the vanes; and a first ring seal for each vane adapted to overlay and seal any openings between the vane and the rear shoulder at the outer end to prevent fluid from flowing rearwardly out of the outer chamber past said rear lug.